diff --git a/README.md b/README.md index 4245c86..1a2a598 100644 --- a/README.md +++ b/README.md @@ -197,17 +197,6 @@ if (!ret) { * `TINYGLTF_USE_RAPIDJSON` : Use RapidJSON as a JSON parser/serializer. RapidJSON files are not included in TinyGLTF repo. Please set an include path to RapidJSON if you enable this feature. * `TINYGLTF_USE_CPP14` : Use C++14 feature(requires C++14 compiler). This may give better performance than C++11. -### Wuffs image loader option(faster and secure JPEG/PNG deocoding) - -You can use `wuffs` image loader to load JPEG and PNG in fast and securely. -(`stb_image` has some security issues, whereas `wuffs` is well fuzz tested) - -Not that some uncommon JPEG format is unsupported in `wuffs` `std/jpeg` decoder. - -* `TINYGLTF_USE_WUFFS_IMAGE_LOADER` : Use `wuffs` to load images. `stb_image` related stuff will be disabled. - * `TINYGLTF_NO_STB_IMAGE` supercedes `wuffs` macros. i.e. when `TINYGLTF_NO_STB_IMAGE` is defined, both `stb_image` and `wuffs` are disabled. -* `TINYGLTF_NO_WUFFS_IMPLEMENTATION` : Do not define `WUFFS_IMPLEMENTATION` inside `tiny_gltf.h`. Define this macro if you use `wuffs` in another C/C++ file. - ## CMake options diff --git a/tiny_gltf.h b/tiny_gltf.h index 67ebe97..f497ad9 100644 --- a/tiny_gltf.h +++ b/tiny_gltf.h @@ -25,32 +25,8 @@ // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN // THE SOFTWARE. -// Version: -// - v2.8.1 Missed serialization texture sampler name fixed. PR#399. -// - v2.8.0 Add URICallbacks for custom URI handling in Buffer and Image. PR#397. -// - v2.7.0 Change WriteImageDataFunction user callback function signature. PR#393. -// - v2.6.3 Fix GLB file with empty BIN chunk was not handled. PR#382 and PR#383. -// - v2.6.2 Fix out-of-bounds access of accessors. PR#379. -// - v2.6.1 Better GLB validation check when loading. -// - v2.6.0 Support serializing sparse accessor(Thanks to @fynv). -// Disable expanding file path for security(no use of awkward `wordexp` anymore). -// - v2.5.0 Add SetPreserveImageChannels() option to load image data as is. -// - v2.4.3 Fix null object output when material has all default -// parameters. -// - v2.4.2 Decode percent-encoded URI. -// - v2.4.1 Fix some glTF object class does not have `extensions` and/or -// `extras` property. -// - v2.4.0 Experimental RapidJSON and C++14 support(Thanks to @jrkoone). -// - v2.3.1 Set default value of minFilter and magFilter in Sampler to -1. -// - v2.3.0 Modified Material representation according to glTF 2.0 schema -// (and introduced TextureInfo class) -// Change the behavior of `Value::IsNumber`. It return true either the -// value is int or real. -// - v2.2.0 Add loading 16bit PNG support. Add Sparse accessor support(Thanks -// to @Ybalrid) -// - v2.1.0 Add draco compression. -// - v2.0.1 Add comparison feature(Thanks to @Selmar). -// - v2.0.0 glTF 2.0!. +// Version: - v2.8.10 +// See https://github.com/syoyo/tinygltf/releases for release history. // // Tiny glTF loader is using following third party libraries: // diff --git a/wuffs-unsupported-snapshot.c b/wuffs-unsupported-snapshot.c deleted file mode 100644 index 288e948..0000000 --- a/wuffs-unsupported-snapshot.c +++ /dev/null @@ -1,55830 +0,0 @@ -#ifndef WUFFS_INCLUDE_GUARD -#define WUFFS_INCLUDE_GUARD - -// Wuffs ships as a "single file C library" or "header file library" as per -// https://github.com/nothings/stb/blob/master/docs/stb_howto.txt -// -// To use that single file as a "foo.c"-like implementation, instead of a -// "foo.h"-like header, #define WUFFS_IMPLEMENTATION before #include'ing or -// compiling it. - -// Wuffs' C code is generated automatically, not hand-written. These warnings' -// costs outweigh the benefits. -// -// The "elif defined(__clang__)" isn't redundant. While vanilla clang defines -// __GNUC__, clang-cl (which mimics MSVC's cl.exe) does not. -#if defined(__GNUC__) -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wimplicit-fallthrough" -#pragma GCC diagnostic ignored "-Wmissing-field-initializers" -#pragma GCC diagnostic ignored "-Wunreachable-code" -#pragma GCC diagnostic ignored "-Wunused-function" -#pragma GCC diagnostic ignored "-Wunused-parameter" -#if defined(__cplusplus) -#pragma GCC diagnostic ignored "-Wold-style-cast" -#endif -#elif defined(__clang__) -#pragma clang diagnostic push -#pragma clang diagnostic ignored "-Wimplicit-fallthrough" -#pragma clang diagnostic ignored "-Wmissing-field-initializers" -#pragma clang diagnostic ignored "-Wunreachable-code" -#pragma clang diagnostic ignored "-Wunused-function" -#pragma clang diagnostic ignored "-Wunused-parameter" -#if defined(__cplusplus) -#pragma clang diagnostic ignored "-Wold-style-cast" -#endif -#endif - -// Copyright 2017 The Wuffs Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// https://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include -#include -#include -#include - -#ifdef __cplusplus -#if (__cplusplus >= 201103L) || defined(_MSC_VER) -#include -#define WUFFS_BASE__HAVE_EQ_DELETE -#define WUFFS_BASE__HAVE_UNIQUE_PTR -// The "defined(__clang__)" isn't redundant. While vanilla clang defines -// __GNUC__, clang-cl (which mimics MSVC's cl.exe) does not. -#elif defined(__GNUC__) || defined(__clang__) -#warning "Wuffs' C++ code expects -std=c++11 or later" -#endif - -extern "C" { -#endif - -// ---------------- Version - -// WUFFS_VERSION is the major.minor.patch version, as per https://semver.org/, -// as a uint64_t. The major number is the high 32 bits. The minor number is the -// middle 16 bits. The patch number is the low 16 bits. The pre-release label -// and build metadata are part of the string representation (such as -// "1.2.3-beta+456.20181231") but not the uint64_t representation. -// -// WUFFS_VERSION_PRE_RELEASE_LABEL (such as "", "beta" or "rc.1") being -// non-empty denotes a developer preview, not a release version, and has no -// backwards or forwards compatibility guarantees. -// -// WUFFS_VERSION_BUILD_METADATA_XXX, if non-zero, are the number of commits and -// the last commit date in the repository used to build this library. Within -// each major.minor branch, the commit count should increase monotonically. -// -// ¡ Some code generation programs can override WUFFS_VERSION. -#define WUFFS_VERSION 0 -#define WUFFS_VERSION_MAJOR 0 -#define WUFFS_VERSION_MINOR 0 -#define WUFFS_VERSION_PATCH 0 -#define WUFFS_VERSION_PRE_RELEASE_LABEL "unsupported.snapshot" -#define WUFFS_VERSION_BUILD_METADATA_COMMIT_COUNT 0 -#define WUFFS_VERSION_BUILD_METADATA_COMMIT_DATE 0 -#define WUFFS_VERSION_STRING "0.0.0+0.00000000" - -// ---------------- Configuration - -// Define WUFFS_CONFIG__AVOID_CPU_ARCH to avoid any code tied to a specific CPU -// architecture, such as SSE SIMD for the x86 CPU family. -#if defined(WUFFS_CONFIG__AVOID_CPU_ARCH) // (#if-chain ref AVOID_CPU_ARCH_0) -// No-op. -#else // (#if-chain ref AVOID_CPU_ARCH_0) - -// The "defined(__clang__)" isn't redundant. While vanilla clang defines -// __GNUC__, clang-cl (which mimics MSVC's cl.exe) does not. -#if defined(__GNUC__) || defined(__clang__) -#define WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET(arg) __attribute__((target(arg))) -#else -#define WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET(arg) -#endif // defined(__GNUC__) || defined(__clang__) - -#if defined(__GNUC__) // (#if-chain ref AVOID_CPU_ARCH_1) - -// To simplify Wuffs code, "cpu_arch >= arm_xxx" requires xxx but also -// unaligned little-endian load/stores. -#if defined(__ARM_FEATURE_UNALIGNED) && !defined(__native_client__) && \ - defined(__BYTE_ORDER__) && (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) -// Not all gcc versions define __ARM_ACLE, even if they support crc32 -// intrinsics. Look for __ARM_FEATURE_CRC32 instead. -#if defined(__ARM_FEATURE_CRC32) -#include -#define WUFFS_BASE__CPU_ARCH__ARM_CRC32 -#endif // defined(__ARM_FEATURE_CRC32) -#if defined(__ARM_NEON) -#include -#define WUFFS_BASE__CPU_ARCH__ARM_NEON -#endif // defined(__ARM_NEON) -#endif // defined(__ARM_FEATURE_UNALIGNED) etc - -// Similarly, "cpu_arch >= x86_sse42" requires SSE4.2 but also PCLMUL and -// POPCNT. This is checked at runtime via cpuid, not at compile time. -// -// Likewise, "cpu_arch >= x86_avx2" also requires PCLMUL, POPCNT and SSE4.2. -#if defined(__i386__) || defined(__x86_64__) -#if !defined(__native_client__) -#include -#include -// X86_FAMILY means X86 (32-bit) or X86_64 (64-bit, obviously). -#define WUFFS_BASE__CPU_ARCH__X86_FAMILY -#endif // !defined(__native_client__) -#endif // defined(__i386__) || defined(__x86_64__) - -#elif defined(_MSC_VER) // (#if-chain ref AVOID_CPU_ARCH_1) - -#if defined(_M_IX86) || defined(_M_X64) -#if defined(__AVX__) || defined(__clang__) - -// We need for the __cpuid function. -#include -// That's not enough for X64 SIMD, with clang-cl, if we want to use -// "__attribute__((target(arg)))" without e.g. "/arch:AVX". -// -// Some web pages suggest that is all you need, as it pulls in -// the earlier SIMD families like SSE4.2, but that doesn't seem to work in -// practice, possibly for the same reason that just doesn't work. -#include // AVX, AVX2, FMA, POPCNT -#include // SSE4.2 -#include // AES, PCLMUL -// X86_FAMILY means X86 (32-bit) or X86_64 (64-bit, obviously). -#define WUFFS_BASE__CPU_ARCH__X86_FAMILY - -#else // defined(__AVX__) || defined(__clang__) - -// clang-cl (which defines both __clang__ and _MSC_VER) supports -// "__attribute__((target(arg)))". -// -// For MSVC's cl.exe (unlike clang or gcc), SIMD capability is a compile-time -// property of the source file (e.g. a /arch:AVX or -mavx compiler flag), not -// of individual functions (that can be conditionally selected at runtime). -#pragma message("Wuffs with MSVC+IX86/X64 needs /arch:AVX for best performance") - -#endif // defined(__AVX__) || defined(__clang__) -#endif // defined(_M_IX86) || defined(_M_X64) - -#endif // (#if-chain ref AVOID_CPU_ARCH_1) -#endif // (#if-chain ref AVOID_CPU_ARCH_0) - -// -------- - -// Define WUFFS_CONFIG__STATIC_FUNCTIONS (combined with WUFFS_IMPLEMENTATION) -// to make all of Wuffs' functions have static storage. -// -// This can help the compiler ignore or discard unused code, which can produce -// faster compiles and smaller binaries. Other motivations are discussed in the -// "ALLOW STATIC IMPLEMENTATION" section of -// https://raw.githubusercontent.com/nothings/stb/master/docs/stb_howto.txt -#if defined(WUFFS_CONFIG__STATIC_FUNCTIONS) -#define WUFFS_BASE__MAYBE_STATIC static -#else -#define WUFFS_BASE__MAYBE_STATIC -#endif // defined(WUFFS_CONFIG__STATIC_FUNCTIONS) - -// ---------------- CPU Architecture - -static inline bool // -wuffs_base__cpu_arch__have_arm_crc32() { -#if defined(WUFFS_BASE__CPU_ARCH__ARM_CRC32) - return true; -#else - return false; -#endif // defined(WUFFS_BASE__CPU_ARCH__ARM_CRC32) -} - -static inline bool // -wuffs_base__cpu_arch__have_arm_neon() { -#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) - return true; -#else - return false; -#endif // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) -} - -static inline bool // -wuffs_base__cpu_arch__have_x86_avx2() { -#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) - // GCC defines these macros but MSVC does not. - // - bit_AVX2 = (1 << 5) - const unsigned int avx2_ebx7 = 0x00000020; - // GCC defines these macros but MSVC does not. - // - bit_PCLMUL = (1 << 1) - // - bit_POPCNT = (1 << 23) - // - bit_SSE4_2 = (1 << 20) - const unsigned int avx2_ecx1 = 0x00900002; - - // clang defines __GNUC__ and clang-cl defines _MSC_VER (but not __GNUC__). -#if defined(__GNUC__) - unsigned int eax7 = 0; - unsigned int ebx7 = 0; - unsigned int ecx7 = 0; - unsigned int edx7 = 0; - if (__get_cpuid_count(7, 0, &eax7, &ebx7, &ecx7, &edx7) && - ((ebx7 & avx2_ebx7) == avx2_ebx7)) { - unsigned int eax1 = 0; - unsigned int ebx1 = 0; - unsigned int ecx1 = 0; - unsigned int edx1 = 0; - if (__get_cpuid(1, &eax1, &ebx1, &ecx1, &edx1) && - ((ecx1 & avx2_ecx1) == avx2_ecx1)) { - return true; - } - } -#elif defined(_MSC_VER) // defined(__GNUC__) - int x7[4]; - __cpuidex(x7, 7, 0); - if ((((unsigned int)(x7[1])) & avx2_ebx7) == avx2_ebx7) { - int x1[4]; - __cpuid(x1, 1); - if ((((unsigned int)(x1[2])) & avx2_ecx1) == avx2_ecx1) { - return true; - } - } -#else -#error "WUFFS_BASE__CPU_ARCH__ETC combined with an unsupported compiler" -#endif // defined(__GNUC__); defined(_MSC_VER) -#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) - return false; -} - -static inline bool // -wuffs_base__cpu_arch__have_x86_bmi2() { -#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) - // GCC defines these macros but MSVC does not. - // - bit_BMI2 = (1 << 8) - const unsigned int bmi2_ebx7 = 0x00000100; - - // clang defines __GNUC__ and clang-cl defines _MSC_VER (but not __GNUC__). -#if defined(__GNUC__) - unsigned int eax7 = 0; - unsigned int ebx7 = 0; - unsigned int ecx7 = 0; - unsigned int edx7 = 0; - if (__get_cpuid_count(7, 0, &eax7, &ebx7, &ecx7, &edx7) && - ((ebx7 & bmi2_ebx7) == bmi2_ebx7)) { - return true; - } -#elif defined(_MSC_VER) // defined(__GNUC__) - int x7[4]; - __cpuidex(x7, 7, 0); - if ((((unsigned int)(x7[1])) & bmi2_ebx7) == bmi2_ebx7) { - return true; - } -#else -#error "WUFFS_BASE__CPU_ARCH__ETC combined with an unsupported compiler" -#endif // defined(__GNUC__); defined(_MSC_VER) -#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) - return false; -} - -static inline bool // -wuffs_base__cpu_arch__have_x86_sse42() { -#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) - // GCC defines these macros but MSVC does not. - // - bit_PCLMUL = (1 << 1) - // - bit_POPCNT = (1 << 23) - // - bit_SSE4_2 = (1 << 20) - const unsigned int sse42_ecx1 = 0x00900002; - - // clang defines __GNUC__ and clang-cl defines _MSC_VER (but not __GNUC__). -#if defined(__GNUC__) - unsigned int eax1 = 0; - unsigned int ebx1 = 0; - unsigned int ecx1 = 0; - unsigned int edx1 = 0; - if (__get_cpuid(1, &eax1, &ebx1, &ecx1, &edx1) && - ((ecx1 & sse42_ecx1) == sse42_ecx1)) { - return true; - } -#elif defined(_MSC_VER) // defined(__GNUC__) - int x1[4]; - __cpuid(x1, 1); - if ((((unsigned int)(x1[2])) & sse42_ecx1) == sse42_ecx1) { - return true; - } -#else -#error "WUFFS_BASE__CPU_ARCH__ETC combined with an unsupported compiler" -#endif // defined(__GNUC__); defined(_MSC_VER) -#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) - return false; -} - -// ---------------- Fundamentals - -// Wuffs assumes that: -// - converting a uint32_t to a size_t will never overflow. -// - converting a size_t to a uint64_t will never overflow. -#if defined(__WORDSIZE) -#if (__WORDSIZE != 32) && (__WORDSIZE != 64) -#error "Wuffs requires a word size of either 32 or 64 bits" -#endif -#endif - -// The "defined(__clang__)" isn't redundant. While vanilla clang defines -// __GNUC__, clang-cl (which mimics MSVC's cl.exe) does not. -#if defined(__GNUC__) || defined(__clang__) -#define WUFFS_BASE__POTENTIALLY_UNUSED __attribute__((unused)) -#define WUFFS_BASE__WARN_UNUSED_RESULT __attribute__((warn_unused_result)) -#else -#define WUFFS_BASE__POTENTIALLY_UNUSED -#define WUFFS_BASE__WARN_UNUSED_RESULT -#endif - -// -------- - -// Options (bitwise or'ed together) for wuffs_foo__bar__initialize functions. - -#define WUFFS_INITIALIZE__DEFAULT_OPTIONS ((uint32_t)0x00000000) - -// WUFFS_INITIALIZE__ALREADY_ZEROED means that the "self" receiver struct value -// has already been set to all zeroes. -#define WUFFS_INITIALIZE__ALREADY_ZEROED ((uint32_t)0x00000001) - -// WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED means that, absent -// WUFFS_INITIALIZE__ALREADY_ZEROED, only some of the "self" receiver struct -// value will be set to all zeroes. Internal buffers, which tend to be a large -// proportion of the struct's size, will be left uninitialized. Internal means -// that the buffer is contained by the receiver struct, as opposed to being -// passed as a separately allocated "work buffer". -// -// For more detail, see: -// https://github.com/google/wuffs/blob/main/doc/note/initialization.md -#define WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED \ - ((uint32_t)0x00000002) - -// -------- - -// wuffs_base__empty_struct is used when a Wuffs function returns an empty -// struct. In C, if a function f returns void, you can't say "x = f()", but in -// Wuffs, if a function g returns empty, you can say "y = g()". -typedef struct wuffs_base__empty_struct__struct { - // private_impl is a placeholder field. It isn't explicitly used, except that - // without it, the sizeof a struct with no fields can differ across C/C++ - // compilers, and it is undefined behavior in C99. For example, gcc says that - // the sizeof an empty struct is 0, and g++ says that it is 1. This leads to - // ABI incompatibility if a Wuffs .c file is processed by one compiler and - // its .h file with another compiler. - // - // Instead, we explicitly insert an otherwise unused field, so that the - // sizeof this struct is always 1. - uint8_t private_impl; -} wuffs_base__empty_struct; - -static inline wuffs_base__empty_struct // -wuffs_base__make_empty_struct() { - wuffs_base__empty_struct ret; - ret.private_impl = 0; - return ret; -} - -// wuffs_base__utility is a placeholder receiver type. It enables what Java -// calls static methods, as opposed to regular methods. -typedef struct wuffs_base__utility__struct { - // private_impl is a placeholder field. It isn't explicitly used, except that - // without it, the sizeof a struct with no fields can differ across C/C++ - // compilers, and it is undefined behavior in C99. For example, gcc says that - // the sizeof an empty struct is 0, and g++ says that it is 1. This leads to - // ABI incompatibility if a Wuffs .c file is processed by one compiler and - // its .h file with another compiler. - // - // Instead, we explicitly insert an otherwise unused field, so that the - // sizeof this struct is always 1. - uint8_t private_impl; -} wuffs_base__utility; - -typedef struct wuffs_base__vtable__struct { - const char* vtable_name; - const void* function_pointers; -} wuffs_base__vtable; - -// -------- - -// See https://github.com/google/wuffs/blob/main/doc/note/statuses.md -typedef struct wuffs_base__status__struct { - const char* repr; - -#ifdef __cplusplus - inline bool is_complete() const; - inline bool is_error() const; - inline bool is_note() const; - inline bool is_ok() const; - inline bool is_suspension() const; - inline const char* message() const; -#endif // __cplusplus - -} wuffs_base__status; - -extern const char wuffs_base__note__i_o_redirect[]; -extern const char wuffs_base__note__end_of_data[]; -extern const char wuffs_base__note__metadata_reported[]; -extern const char wuffs_base__suspension__even_more_information[]; -extern const char wuffs_base__suspension__mispositioned_read[]; -extern const char wuffs_base__suspension__mispositioned_write[]; -extern const char wuffs_base__suspension__short_read[]; -extern const char wuffs_base__suspension__short_write[]; -extern const char wuffs_base__error__bad_i_o_position[]; -extern const char wuffs_base__error__bad_argument_length_too_short[]; -extern const char wuffs_base__error__bad_argument[]; -extern const char wuffs_base__error__bad_call_sequence[]; -extern const char wuffs_base__error__bad_data[]; -extern const char wuffs_base__error__bad_receiver[]; -extern const char wuffs_base__error__bad_restart[]; -extern const char wuffs_base__error__bad_sizeof_receiver[]; -extern const char wuffs_base__error__bad_vtable[]; -extern const char wuffs_base__error__bad_workbuf_length[]; -extern const char wuffs_base__error__bad_wuffs_version[]; -extern const char wuffs_base__error__cannot_return_a_suspension[]; -extern const char wuffs_base__error__disabled_by_previous_error[]; -extern const char wuffs_base__error__initialize_falsely_claimed_already_zeroed[]; -extern const char wuffs_base__error__initialize_not_called[]; -extern const char wuffs_base__error__interleaved_coroutine_calls[]; -extern const char wuffs_base__error__no_more_information[]; -extern const char wuffs_base__error__not_enough_data[]; -extern const char wuffs_base__error__out_of_bounds[]; -extern const char wuffs_base__error__unsupported_image_dimension[]; -extern const char wuffs_base__error__unsupported_method[]; -extern const char wuffs_base__error__unsupported_option[]; -extern const char wuffs_base__error__unsupported_pixel_swizzler_option[]; -extern const char wuffs_base__error__too_much_data[]; - -static inline wuffs_base__status // -wuffs_base__make_status(const char* repr) { - wuffs_base__status z; - z.repr = repr; - return z; -} - -static inline bool // -wuffs_base__status__is_complete(const wuffs_base__status* z) { - return (z->repr == NULL) || ((*z->repr != '$') && (*z->repr != '#')); -} - -static inline bool // -wuffs_base__status__is_error(const wuffs_base__status* z) { - return z->repr && (*z->repr == '#'); -} - -static inline bool // -wuffs_base__status__is_note(const wuffs_base__status* z) { - return z->repr && (*z->repr != '$') && (*z->repr != '#'); -} - -static inline bool // -wuffs_base__status__is_ok(const wuffs_base__status* z) { - return z->repr == NULL; -} - -static inline bool // -wuffs_base__status__is_suspension(const wuffs_base__status* z) { - return z->repr && (*z->repr == '$'); -} - -// wuffs_base__status__message strips the leading '$', '#' or '@'. -static inline const char* // -wuffs_base__status__message(const wuffs_base__status* z) { - if (z->repr) { - if ((*z->repr == '$') || (*z->repr == '#') || (*z->repr == '@')) { - return z->repr + 1; - } - } - return z->repr; -} - -#ifdef __cplusplus - -inline bool // -wuffs_base__status::is_complete() const { - return wuffs_base__status__is_complete(this); -} - -inline bool // -wuffs_base__status::is_error() const { - return wuffs_base__status__is_error(this); -} - -inline bool // -wuffs_base__status::is_note() const { - return wuffs_base__status__is_note(this); -} - -inline bool // -wuffs_base__status::is_ok() const { - return wuffs_base__status__is_ok(this); -} - -inline bool // -wuffs_base__status::is_suspension() const { - return wuffs_base__status__is_suspension(this); -} - -inline const char* // -wuffs_base__status::message() const { - return wuffs_base__status__message(this); -} - -#endif // __cplusplus - -// -------- - -// WUFFS_BASE__RESULT is a result type: either a status (an error) or a value. -// -// A result with all fields NULL or zero is as valid as a zero-valued T. -#define WUFFS_BASE__RESULT(T) \ - struct { \ - wuffs_base__status status; \ - T value; \ - } - -typedef WUFFS_BASE__RESULT(double) wuffs_base__result_f64; -typedef WUFFS_BASE__RESULT(int64_t) wuffs_base__result_i64; -typedef WUFFS_BASE__RESULT(uint64_t) wuffs_base__result_u64; - -// -------- - -// wuffs_base__transform__output is the result of transforming from a src slice -// to a dst slice. -typedef struct wuffs_base__transform__output__struct { - wuffs_base__status status; - size_t num_dst; - size_t num_src; -} wuffs_base__transform__output; - -// -------- - -// FourCC constants. Four Character Codes are literally four ASCII characters -// (sometimes padded with ' ' spaces) that pack neatly into a signed or -// unsigned 32-bit integer. ASCII letters are conventionally upper case. -// -// They are often used to identify video codecs (e.g. "H265") and pixel formats -// (e.g. "YV12"). Wuffs uses them for that but also generally for naming -// various things: compression formats (e.g. "BZ2 "), image metadata (e.g. -// "EXIF"), file formats (e.g. "HTML"), etc. -// -// Wuffs' u32 values are big-endian ("JPEG" is 0x4A504547 not 0x4745504A) to -// preserve ordering: "JPEG" < "MP3 " and 0x4A504547 < 0x4D503320. - -// Background Color. -#define WUFFS_BASE__FOURCC__BGCL 0x4247434C - -// Bitmap. -#define WUFFS_BASE__FOURCC__BMP 0x424D5020 - -// Brotli. -#define WUFFS_BASE__FOURCC__BRTL 0x4252544C - -// Bzip2. -#define WUFFS_BASE__FOURCC__BZ2 0x425A3220 - -// Concise Binary Object Representation. -#define WUFFS_BASE__FOURCC__CBOR 0x43424F52 - -// Primary Chromaticities and White Point. -#define WUFFS_BASE__FOURCC__CHRM 0x4348524D - -// Cascading Style Sheets. -#define WUFFS_BASE__FOURCC__CSS 0x43535320 - -// Encapsulated PostScript. -#define WUFFS_BASE__FOURCC__EPS 0x45505320 - -// Exchangeable Image File Format. -#define WUFFS_BASE__FOURCC__EXIF 0x45584946 - -// Free Lossless Audio Codec. -#define WUFFS_BASE__FOURCC__FLAC 0x464C4143 - -// Gamma Correction. -#define WUFFS_BASE__FOURCC__GAMA 0x47414D41 - -// Graphics Interchange Format. -#define WUFFS_BASE__FOURCC__GIF 0x47494620 - -// GNU Zip. -#define WUFFS_BASE__FOURCC__GZ 0x475A2020 - -// High Efficiency Image File. -#define WUFFS_BASE__FOURCC__HEIF 0x48454946 - -// Hypertext Markup Language. -#define WUFFS_BASE__FOURCC__HTML 0x48544D4C - -// International Color Consortium Profile. -#define WUFFS_BASE__FOURCC__ICCP 0x49434350 - -// Icon. -#define WUFFS_BASE__FOURCC__ICO 0x49434F20 - -// Icon Vector Graphics. -#define WUFFS_BASE__FOURCC__ICVG 0x49435647 - -// Initialization. -#define WUFFS_BASE__FOURCC__INI 0x494E4920 - -// Joint Photographic Experts Group. -#define WUFFS_BASE__FOURCC__JPEG 0x4A504547 - -// JavaScript. -#define WUFFS_BASE__FOURCC__JS 0x4A532020 - -// JavaScript Object Notation. -#define WUFFS_BASE__FOURCC__JSON 0x4A534F4E - -// JSON With Commas and Comments. -#define WUFFS_BASE__FOURCC__JWCC 0x4A574343 - -// Key-Value Pair. -#define WUFFS_BASE__FOURCC__KVP 0x4B565020 - -// Key-Value Pair (Key). -#define WUFFS_BASE__FOURCC__KVPK 0x4B56504B - -// Key-Value Pair (Value). -#define WUFFS_BASE__FOURCC__KVPV 0x4B565056 - -// Lempel–Ziv 4. -#define WUFFS_BASE__FOURCC__LZ4 0x4C5A3420 - -// Markdown. -#define WUFFS_BASE__FOURCC__MD 0x4D442020 - -// Modification Time. -#define WUFFS_BASE__FOURCC__MTIM 0x4D54494D - -// MPEG-1 Audio Layer III. -#define WUFFS_BASE__FOURCC__MP3 0x4D503320 - -// Naive Image. -#define WUFFS_BASE__FOURCC__NIE 0x4E494520 - -// Netpbm (Portable Anymap). -#define WUFFS_BASE__FOURCC__NPBM 0x4E50424D - -// Offset (2-Dimensional). -#define WUFFS_BASE__FOURCC__OFS2 0x4F465332 - -// Open Type Format. -#define WUFFS_BASE__FOURCC__OTF 0x4F544620 - -// Portable Document Format. -#define WUFFS_BASE__FOURCC__PDF 0x50444620 - -// Physical Dimensions. -#define WUFFS_BASE__FOURCC__PHYD 0x50485944 - -// Portable Network Graphics. -#define WUFFS_BASE__FOURCC__PNG 0x504E4720 - -// PostScript. -#define WUFFS_BASE__FOURCC__PS 0x50532020 - -// Quite OK Image. -#define WUFFS_BASE__FOURCC__QOI 0x514F4920 - -// Random Access Compression. -#define WUFFS_BASE__FOURCC__RAC 0x52414320 - -// Raw. -#define WUFFS_BASE__FOURCC__RAW 0x52415720 - -// Resource Interchange File Format. -#define WUFFS_BASE__FOURCC__RIFF 0x52494646 - -// Riegeli Records. -#define WUFFS_BASE__FOURCC__RIGL 0x5249474C - -// Snappy. -#define WUFFS_BASE__FOURCC__SNPY 0x534E5059 - -// Standard Red Green Blue (Rendering Intent). -#define WUFFS_BASE__FOURCC__SRGB 0x53524742 - -// Scalable Vector Graphics. -#define WUFFS_BASE__FOURCC__SVG 0x53564720 - -// Tape Archive. -#define WUFFS_BASE__FOURCC__TAR 0x54415220 - -// Text. -#define WUFFS_BASE__FOURCC__TEXT 0x54455854 - -// Truevision Advanced Raster Graphics Adapter. -#define WUFFS_BASE__FOURCC__TGA 0x54474120 - -// Tagged Image File Format. -#define WUFFS_BASE__FOURCC__TIFF 0x54494646 - -// Tom's Obvious Minimal Language. -#define WUFFS_BASE__FOURCC__TOML 0x544F4D4C - -// Waveform. -#define WUFFS_BASE__FOURCC__WAVE 0x57415645 - -// Wireless Bitmap. -#define WUFFS_BASE__FOURCC__WBMP 0x57424D50 - -// Web Picture. -#define WUFFS_BASE__FOURCC__WEBP 0x57454250 - -// Web Open Font Format. -#define WUFFS_BASE__FOURCC__WOFF 0x574F4646 - -// Extensible Markup Language. -#define WUFFS_BASE__FOURCC__XML 0x584D4C20 - -// Extensible Metadata Platform. -#define WUFFS_BASE__FOURCC__XMP 0x584D5020 - -// Xz. -#define WUFFS_BASE__FOURCC__XZ 0x585A2020 - -// Zip. -#define WUFFS_BASE__FOURCC__ZIP 0x5A495020 - -// Zlib. -#define WUFFS_BASE__FOURCC__ZLIB 0x5A4C4942 - -// Zstandard. -#define WUFFS_BASE__FOURCC__ZSTD 0x5A535444 - -// -------- - -// Quirks. - -#define WUFFS_BASE__QUIRK_IGNORE_CHECKSUM 1 - -// -------- - -// Flicks are a unit of time. One flick (frame-tick) is 1 / 705_600_000 of a -// second. See https://github.com/OculusVR/Flicks -typedef int64_t wuffs_base__flicks; - -#define WUFFS_BASE__FLICKS_PER_SECOND ((uint64_t)705600000) -#define WUFFS_BASE__FLICKS_PER_MILLISECOND ((uint64_t)705600) - -// ---------------- Numeric Types - -// The helpers below are functions, instead of macros, because their arguments -// can be an expression that we shouldn't evaluate more than once. -// -// They are static, so that linking multiple wuffs .o files won't complain about -// duplicate function definitions. -// -// They are explicitly marked inline, even if modern compilers don't use the -// inline attribute to guide optimizations such as inlining, to avoid the -// -Wunused-function warning, and we like to compile with -Wall -Werror. - -static inline int8_t // -wuffs_base__i8__min(int8_t x, int8_t y) { - return x < y ? x : y; -} - -static inline int8_t // -wuffs_base__i8__max(int8_t x, int8_t y) { - return x > y ? x : y; -} - -static inline int16_t // -wuffs_base__i16__min(int16_t x, int16_t y) { - return x < y ? x : y; -} - -static inline int16_t // -wuffs_base__i16__max(int16_t x, int16_t y) { - return x > y ? x : y; -} - -static inline int32_t // -wuffs_base__i32__min(int32_t x, int32_t y) { - return x < y ? x : y; -} - -static inline int32_t // -wuffs_base__i32__max(int32_t x, int32_t y) { - return x > y ? x : y; -} - -static inline int64_t // -wuffs_base__i64__min(int64_t x, int64_t y) { - return x < y ? x : y; -} - -static inline int64_t // -wuffs_base__i64__max(int64_t x, int64_t y) { - return x > y ? x : y; -} - -static inline uint8_t // -wuffs_base__u8__min(uint8_t x, uint8_t y) { - return x < y ? x : y; -} - -static inline uint8_t // -wuffs_base__u8__max(uint8_t x, uint8_t y) { - return x > y ? x : y; -} - -static inline uint16_t // -wuffs_base__u16__min(uint16_t x, uint16_t y) { - return x < y ? x : y; -} - -static inline uint16_t // -wuffs_base__u16__max(uint16_t x, uint16_t y) { - return x > y ? x : y; -} - -static inline uint32_t // -wuffs_base__u32__min(uint32_t x, uint32_t y) { - return x < y ? x : y; -} - -static inline uint32_t // -wuffs_base__u32__max(uint32_t x, uint32_t y) { - return x > y ? x : y; -} - -static inline uint64_t // -wuffs_base__u64__min(uint64_t x, uint64_t y) { - return x < y ? x : y; -} - -static inline uint64_t // -wuffs_base__u64__max(uint64_t x, uint64_t y) { - return x > y ? x : y; -} - -// -------- - -static inline uint8_t // -wuffs_base__u8__rotate_left(uint8_t x, uint32_t n) { - n &= 7; - return ((uint8_t)(x << n)) | ((uint8_t)(x >> (8 - n))); -} - -static inline uint8_t // -wuffs_base__u8__rotate_right(uint8_t x, uint32_t n) { - n &= 7; - return ((uint8_t)(x >> n)) | ((uint8_t)(x << (8 - n))); -} - -static inline uint16_t // -wuffs_base__u16__rotate_left(uint16_t x, uint32_t n) { - n &= 15; - return ((uint16_t)(x << n)) | ((uint16_t)(x >> (16 - n))); -} - -static inline uint16_t // -wuffs_base__u16__rotate_right(uint16_t x, uint32_t n) { - n &= 15; - return ((uint16_t)(x >> n)) | ((uint16_t)(x << (16 - n))); -} - -static inline uint32_t // -wuffs_base__u32__rotate_left(uint32_t x, uint32_t n) { - n &= 31; - return ((uint32_t)(x << n)) | ((uint32_t)(x >> (32 - n))); -} - -static inline uint32_t // -wuffs_base__u32__rotate_right(uint32_t x, uint32_t n) { - n &= 31; - return ((uint32_t)(x >> n)) | ((uint32_t)(x << (32 - n))); -} - -static inline uint64_t // -wuffs_base__u64__rotate_left(uint64_t x, uint32_t n) { - n &= 63; - return ((uint64_t)(x << n)) | ((uint64_t)(x >> (64 - n))); -} - -static inline uint64_t // -wuffs_base__u64__rotate_right(uint64_t x, uint32_t n) { - n &= 63; - return ((uint64_t)(x >> n)) | ((uint64_t)(x << (64 - n))); -} - -// -------- - -// Saturating arithmetic (sat_add, sat_sub) branchless bit-twiddling algorithms -// are per https://locklessinc.com/articles/sat_arithmetic/ -// -// It is important that the underlying types are unsigned integers, as signed -// integer arithmetic overflow is undefined behavior in C. - -static inline uint8_t // -wuffs_base__u8__sat_add(uint8_t x, uint8_t y) { - uint8_t res = (uint8_t)(x + y); - res |= (uint8_t)(-(res < x)); - return res; -} - -static inline uint8_t // -wuffs_base__u8__sat_sub(uint8_t x, uint8_t y) { - uint8_t res = (uint8_t)(x - y); - res &= (uint8_t)(-(res <= x)); - return res; -} - -static inline uint16_t // -wuffs_base__u16__sat_add(uint16_t x, uint16_t y) { - uint16_t res = (uint16_t)(x + y); - res |= (uint16_t)(-(res < x)); - return res; -} - -static inline uint16_t // -wuffs_base__u16__sat_sub(uint16_t x, uint16_t y) { - uint16_t res = (uint16_t)(x - y); - res &= (uint16_t)(-(res <= x)); - return res; -} - -static inline uint32_t // -wuffs_base__u32__sat_add(uint32_t x, uint32_t y) { - uint32_t res = (uint32_t)(x + y); - res |= (uint32_t)(-(res < x)); - return res; -} - -static inline uint32_t // -wuffs_base__u32__sat_sub(uint32_t x, uint32_t y) { - uint32_t res = (uint32_t)(x - y); - res &= (uint32_t)(-(res <= x)); - return res; -} - -static inline uint64_t // -wuffs_base__u64__sat_add(uint64_t x, uint64_t y) { - uint64_t res = (uint64_t)(x + y); - res |= (uint64_t)(-(res < x)); - return res; -} - -static inline uint64_t // -wuffs_base__u64__sat_sub(uint64_t x, uint64_t y) { - uint64_t res = (uint64_t)(x - y); - res &= (uint64_t)(-(res <= x)); - return res; -} - -// -------- - -typedef struct wuffs_base__multiply_u64__output__struct { - uint64_t lo; - uint64_t hi; -} wuffs_base__multiply_u64__output; - -// wuffs_base__multiply_u64 returns x*y as a 128-bit value. -// -// The maximum inclusive output hi_lo is 0xFFFFFFFFFFFFFFFE_0000000000000001. -static inline wuffs_base__multiply_u64__output // -wuffs_base__multiply_u64(uint64_t x, uint64_t y) { -#if defined(__SIZEOF_INT128__) - __uint128_t z = ((__uint128_t)x) * ((__uint128_t)y); - wuffs_base__multiply_u64__output o; - o.lo = ((uint64_t)(z)); - o.hi = ((uint64_t)(z >> 64)); - return o; -#else - // TODO: consider using the _mul128 intrinsic if defined(_MSC_VER). - uint64_t x0 = x & 0xFFFFFFFF; - uint64_t x1 = x >> 32; - uint64_t y0 = y & 0xFFFFFFFF; - uint64_t y1 = y >> 32; - uint64_t w0 = x0 * y0; - uint64_t t = (x1 * y0) + (w0 >> 32); - uint64_t w1 = t & 0xFFFFFFFF; - uint64_t w2 = t >> 32; - w1 += x0 * y1; - wuffs_base__multiply_u64__output o; - o.lo = x * y; - o.hi = (x1 * y1) + w2 + (w1 >> 32); - return o; -#endif -} - -// -------- - -// The "defined(__clang__)" isn't redundant. While vanilla clang defines -// __GNUC__, clang-cl (which mimics MSVC's cl.exe) does not. -#if (defined(__GNUC__) || defined(__clang__)) && (__SIZEOF_LONG__ == 8) - -static inline uint32_t // -wuffs_base__count_leading_zeroes_u64(uint64_t u) { - return u ? ((uint32_t)(__builtin_clzl(u))) : 64u; -} - -#else -// TODO: consider using the _BitScanReverse intrinsic if defined(_MSC_VER). - -static inline uint32_t // -wuffs_base__count_leading_zeroes_u64(uint64_t u) { - if (u == 0) { - return 64; - } - - uint32_t n = 0; - if ((u >> 32) == 0) { - n |= 32; - u <<= 32; - } - if ((u >> 48) == 0) { - n |= 16; - u <<= 16; - } - if ((u >> 56) == 0) { - n |= 8; - u <<= 8; - } - if ((u >> 60) == 0) { - n |= 4; - u <<= 4; - } - if ((u >> 62) == 0) { - n |= 2; - u <<= 2; - } - if ((u >> 63) == 0) { - n |= 1; - u <<= 1; - } - return n; -} - -#endif // (defined(__GNUC__) || defined(__clang__)) && (__SIZEOF_LONG__ == 8) - -// -------- - -// Normally, the wuffs_base__peek_etc and wuffs_base__poke_etc implementations -// are both (1) correct regardless of CPU endianness and (2) very fast (e.g. an -// inlined wuffs_base__peek_u32le__no_bounds_check call, in an optimized clang -// or gcc build, is a single MOV instruction on x86_64). -// -// However, the endian-agnostic implementations are slow on Microsoft's C -// compiler (MSC). Alternative memcpy-based implementations restore speed, but -// they are only correct on little-endian CPU architectures. Defining -// WUFFS_BASE__USE_MEMCPY_LE_PEEK_POKE opts in to these implementations. -// -// https://godbolt.org/z/q4MfjzTPh -#if defined(_MSC_VER) && !defined(__clang__) && \ - (defined(_M_ARM64) || defined(_M_X64)) -#define WUFFS_BASE__USE_MEMCPY_LE_PEEK_POKE -#endif - -#define wuffs_base__peek_u8be__no_bounds_check \ - wuffs_base__peek_u8__no_bounds_check -#define wuffs_base__peek_u8le__no_bounds_check \ - wuffs_base__peek_u8__no_bounds_check - -static inline uint8_t // -wuffs_base__peek_u8__no_bounds_check(const uint8_t* p) { - return p[0]; -} - -static inline uint16_t // -wuffs_base__peek_u16be__no_bounds_check(const uint8_t* p) { -#if defined(WUFFS_BASE__USE_MEMCPY_LE_PEEK_POKE) - uint16_t x; - memcpy(&x, p, 2); - return _byteswap_ushort(x); -#else - return (uint16_t)(((uint16_t)(p[0]) << 8) | ((uint16_t)(p[1]) << 0)); -#endif -} - -static inline uint16_t // -wuffs_base__peek_u16le__no_bounds_check(const uint8_t* p) { -#if defined(WUFFS_BASE__USE_MEMCPY_LE_PEEK_POKE) - uint16_t x; - memcpy(&x, p, 2); - return x; -#else - return (uint16_t)(((uint16_t)(p[0]) << 0) | ((uint16_t)(p[1]) << 8)); -#endif -} - -static inline uint32_t // -wuffs_base__peek_u24be__no_bounds_check(const uint8_t* p) { - return ((uint32_t)(p[0]) << 16) | ((uint32_t)(p[1]) << 8) | - ((uint32_t)(p[2]) << 0); -} - -static inline uint32_t // -wuffs_base__peek_u24le__no_bounds_check(const uint8_t* p) { - return ((uint32_t)(p[0]) << 0) | ((uint32_t)(p[1]) << 8) | - ((uint32_t)(p[2]) << 16); -} - -static inline uint32_t // -wuffs_base__peek_u32be__no_bounds_check(const uint8_t* p) { -#if defined(WUFFS_BASE__USE_MEMCPY_LE_PEEK_POKE) - uint32_t x; - memcpy(&x, p, 4); - return _byteswap_ulong(x); -#else - return ((uint32_t)(p[0]) << 24) | ((uint32_t)(p[1]) << 16) | - ((uint32_t)(p[2]) << 8) | ((uint32_t)(p[3]) << 0); -#endif -} - -static inline uint32_t // -wuffs_base__peek_u32le__no_bounds_check(const uint8_t* p) { -#if defined(WUFFS_BASE__USE_MEMCPY_LE_PEEK_POKE) - uint32_t x; - memcpy(&x, p, 4); - return x; -#else - return ((uint32_t)(p[0]) << 0) | ((uint32_t)(p[1]) << 8) | - ((uint32_t)(p[2]) << 16) | ((uint32_t)(p[3]) << 24); -#endif -} - -static inline uint64_t // -wuffs_base__peek_u40be__no_bounds_check(const uint8_t* p) { - return ((uint64_t)(p[0]) << 32) | ((uint64_t)(p[1]) << 24) | - ((uint64_t)(p[2]) << 16) | ((uint64_t)(p[3]) << 8) | - ((uint64_t)(p[4]) << 0); -} - -static inline uint64_t // -wuffs_base__peek_u40le__no_bounds_check(const uint8_t* p) { - return ((uint64_t)(p[0]) << 0) | ((uint64_t)(p[1]) << 8) | - ((uint64_t)(p[2]) << 16) | ((uint64_t)(p[3]) << 24) | - ((uint64_t)(p[4]) << 32); -} - -static inline uint64_t // -wuffs_base__peek_u48be__no_bounds_check(const uint8_t* p) { - return ((uint64_t)(p[0]) << 40) | ((uint64_t)(p[1]) << 32) | - ((uint64_t)(p[2]) << 24) | ((uint64_t)(p[3]) << 16) | - ((uint64_t)(p[4]) << 8) | ((uint64_t)(p[5]) << 0); -} - -static inline uint64_t // -wuffs_base__peek_u48le__no_bounds_check(const uint8_t* p) { - return ((uint64_t)(p[0]) << 0) | ((uint64_t)(p[1]) << 8) | - ((uint64_t)(p[2]) << 16) | ((uint64_t)(p[3]) << 24) | - ((uint64_t)(p[4]) << 32) | ((uint64_t)(p[5]) << 40); -} - -static inline uint64_t // -wuffs_base__peek_u56be__no_bounds_check(const uint8_t* p) { - return ((uint64_t)(p[0]) << 48) | ((uint64_t)(p[1]) << 40) | - ((uint64_t)(p[2]) << 32) | ((uint64_t)(p[3]) << 24) | - ((uint64_t)(p[4]) << 16) | ((uint64_t)(p[5]) << 8) | - ((uint64_t)(p[6]) << 0); -} - -static inline uint64_t // -wuffs_base__peek_u56le__no_bounds_check(const uint8_t* p) { - return ((uint64_t)(p[0]) << 0) | ((uint64_t)(p[1]) << 8) | - ((uint64_t)(p[2]) << 16) | ((uint64_t)(p[3]) << 24) | - ((uint64_t)(p[4]) << 32) | ((uint64_t)(p[5]) << 40) | - ((uint64_t)(p[6]) << 48); -} - -static inline uint64_t // -wuffs_base__peek_u64be__no_bounds_check(const uint8_t* p) { -#if defined(WUFFS_BASE__USE_MEMCPY_LE_PEEK_POKE) - uint64_t x; - memcpy(&x, p, 8); - return _byteswap_uint64(x); -#else - return ((uint64_t)(p[0]) << 56) | ((uint64_t)(p[1]) << 48) | - ((uint64_t)(p[2]) << 40) | ((uint64_t)(p[3]) << 32) | - ((uint64_t)(p[4]) << 24) | ((uint64_t)(p[5]) << 16) | - ((uint64_t)(p[6]) << 8) | ((uint64_t)(p[7]) << 0); -#endif -} - -static inline uint64_t // -wuffs_base__peek_u64le__no_bounds_check(const uint8_t* p) { -#if defined(WUFFS_BASE__USE_MEMCPY_LE_PEEK_POKE) - uint64_t x; - memcpy(&x, p, 8); - return x; -#else - return ((uint64_t)(p[0]) << 0) | ((uint64_t)(p[1]) << 8) | - ((uint64_t)(p[2]) << 16) | ((uint64_t)(p[3]) << 24) | - ((uint64_t)(p[4]) << 32) | ((uint64_t)(p[5]) << 40) | - ((uint64_t)(p[6]) << 48) | ((uint64_t)(p[7]) << 56); -#endif -} - -// -------- - -#define wuffs_base__poke_u8be__no_bounds_check \ - wuffs_base__poke_u8__no_bounds_check -#define wuffs_base__poke_u8le__no_bounds_check \ - wuffs_base__poke_u8__no_bounds_check - -static inline void // -wuffs_base__poke_u8__no_bounds_check(uint8_t* p, uint8_t x) { - p[0] = x; -} - -static inline void // -wuffs_base__poke_u16be__no_bounds_check(uint8_t* p, uint16_t x) { - p[0] = (uint8_t)(x >> 8); - p[1] = (uint8_t)(x >> 0); -} - -static inline void // -wuffs_base__poke_u16le__no_bounds_check(uint8_t* p, uint16_t x) { -#if defined(WUFFS_BASE__USE_MEMCPY_LE_PEEK_POKE) || \ - (defined(__GNUC__) && !defined(__clang__) && defined(__x86_64__)) - // This seems to perform better on gcc 10 (but not clang 9). Clang also - // defines "__GNUC__". - memcpy(p, &x, 2); -#else - p[0] = (uint8_t)(x >> 0); - p[1] = (uint8_t)(x >> 8); -#endif -} - -static inline void // -wuffs_base__poke_u24be__no_bounds_check(uint8_t* p, uint32_t x) { - p[0] = (uint8_t)(x >> 16); - p[1] = (uint8_t)(x >> 8); - p[2] = (uint8_t)(x >> 0); -} - -static inline void // -wuffs_base__poke_u24le__no_bounds_check(uint8_t* p, uint32_t x) { - p[0] = (uint8_t)(x >> 0); - p[1] = (uint8_t)(x >> 8); - p[2] = (uint8_t)(x >> 16); -} - -static inline void // -wuffs_base__poke_u32be__no_bounds_check(uint8_t* p, uint32_t x) { - p[0] = (uint8_t)(x >> 24); - p[1] = (uint8_t)(x >> 16); - p[2] = (uint8_t)(x >> 8); - p[3] = (uint8_t)(x >> 0); -} - -static inline void // -wuffs_base__poke_u32le__no_bounds_check(uint8_t* p, uint32_t x) { -#if defined(WUFFS_BASE__USE_MEMCPY_LE_PEEK_POKE) || \ - (defined(__GNUC__) && !defined(__clang__) && defined(__x86_64__)) - // This seems to perform better on gcc 10 (but not clang 9). Clang also - // defines "__GNUC__". - memcpy(p, &x, 4); -#else - p[0] = (uint8_t)(x >> 0); - p[1] = (uint8_t)(x >> 8); - p[2] = (uint8_t)(x >> 16); - p[3] = (uint8_t)(x >> 24); -#endif -} - -static inline void // -wuffs_base__poke_u40be__no_bounds_check(uint8_t* p, uint64_t x) { - p[0] = (uint8_t)(x >> 32); - p[1] = (uint8_t)(x >> 24); - p[2] = (uint8_t)(x >> 16); - p[3] = (uint8_t)(x >> 8); - p[4] = (uint8_t)(x >> 0); -} - -static inline void // -wuffs_base__poke_u40le__no_bounds_check(uint8_t* p, uint64_t x) { - p[0] = (uint8_t)(x >> 0); - p[1] = (uint8_t)(x >> 8); - p[2] = (uint8_t)(x >> 16); - p[3] = (uint8_t)(x >> 24); - p[4] = (uint8_t)(x >> 32); -} - -static inline void // -wuffs_base__poke_u48be__no_bounds_check(uint8_t* p, uint64_t x) { - p[0] = (uint8_t)(x >> 40); - p[1] = (uint8_t)(x >> 32); - p[2] = (uint8_t)(x >> 24); - p[3] = (uint8_t)(x >> 16); - p[4] = (uint8_t)(x >> 8); - p[5] = (uint8_t)(x >> 0); -} - -static inline void // -wuffs_base__poke_u48le__no_bounds_check(uint8_t* p, uint64_t x) { - p[0] = (uint8_t)(x >> 0); - p[1] = (uint8_t)(x >> 8); - p[2] = (uint8_t)(x >> 16); - p[3] = (uint8_t)(x >> 24); - p[4] = (uint8_t)(x >> 32); - p[5] = (uint8_t)(x >> 40); -} - -static inline void // -wuffs_base__poke_u56be__no_bounds_check(uint8_t* p, uint64_t x) { - p[0] = (uint8_t)(x >> 48); - p[1] = (uint8_t)(x >> 40); - p[2] = (uint8_t)(x >> 32); - p[3] = (uint8_t)(x >> 24); - p[4] = (uint8_t)(x >> 16); - p[5] = (uint8_t)(x >> 8); - p[6] = (uint8_t)(x >> 0); -} - -static inline void // -wuffs_base__poke_u56le__no_bounds_check(uint8_t* p, uint64_t x) { - p[0] = (uint8_t)(x >> 0); - p[1] = (uint8_t)(x >> 8); - p[2] = (uint8_t)(x >> 16); - p[3] = (uint8_t)(x >> 24); - p[4] = (uint8_t)(x >> 32); - p[5] = (uint8_t)(x >> 40); - p[6] = (uint8_t)(x >> 48); -} - -static inline void // -wuffs_base__poke_u64be__no_bounds_check(uint8_t* p, uint64_t x) { - p[0] = (uint8_t)(x >> 56); - p[1] = (uint8_t)(x >> 48); - p[2] = (uint8_t)(x >> 40); - p[3] = (uint8_t)(x >> 32); - p[4] = (uint8_t)(x >> 24); - p[5] = (uint8_t)(x >> 16); - p[6] = (uint8_t)(x >> 8); - p[7] = (uint8_t)(x >> 0); -} - -static inline void // -wuffs_base__poke_u64le__no_bounds_check(uint8_t* p, uint64_t x) { -#if defined(WUFFS_BASE__USE_MEMCPY_LE_PEEK_POKE) || \ - (defined(__GNUC__) && !defined(__clang__) && defined(__x86_64__)) - // This seems to perform better on gcc 10 (but not clang 9). Clang also - // defines "__GNUC__". - memcpy(p, &x, 8); -#else - p[0] = (uint8_t)(x >> 0); - p[1] = (uint8_t)(x >> 8); - p[2] = (uint8_t)(x >> 16); - p[3] = (uint8_t)(x >> 24); - p[4] = (uint8_t)(x >> 32); - p[5] = (uint8_t)(x >> 40); - p[6] = (uint8_t)(x >> 48); - p[7] = (uint8_t)(x >> 56); -#endif -} - -// ---------------- Slices and Tables - -// WUFFS_BASE__SLICE is a 1-dimensional buffer. -// -// len measures a number of elements, not necessarily a size in bytes. -// -// A value with all fields NULL or zero is a valid, empty slice. -#define WUFFS_BASE__SLICE(T) \ - struct { \ - T* ptr; \ - size_t len; \ - } - -// WUFFS_BASE__TABLE is a 2-dimensional buffer. -// -// width, height and stride measure a number of elements, not necessarily a -// size in bytes. -// -// A value with all fields NULL or zero is a valid, empty table. -#define WUFFS_BASE__TABLE(T) \ - struct { \ - T* ptr; \ - size_t width; \ - size_t height; \ - size_t stride; \ - } - -typedef WUFFS_BASE__SLICE(uint8_t) wuffs_base__slice_u8; -typedef WUFFS_BASE__SLICE(uint16_t) wuffs_base__slice_u16; -typedef WUFFS_BASE__SLICE(uint32_t) wuffs_base__slice_u32; -typedef WUFFS_BASE__SLICE(uint64_t) wuffs_base__slice_u64; - -typedef WUFFS_BASE__TABLE(uint8_t) wuffs_base__table_u8; -typedef WUFFS_BASE__TABLE(uint16_t) wuffs_base__table_u16; -typedef WUFFS_BASE__TABLE(uint32_t) wuffs_base__table_u32; -typedef WUFFS_BASE__TABLE(uint64_t) wuffs_base__table_u64; - -static inline wuffs_base__slice_u8 // -wuffs_base__make_slice_u8(uint8_t* ptr, size_t len) { - wuffs_base__slice_u8 ret; - ret.ptr = ptr; - ret.len = len; - return ret; -} - -static inline wuffs_base__slice_u16 // -wuffs_base__make_slice_u16(uint16_t* ptr, size_t len) { - wuffs_base__slice_u16 ret; - ret.ptr = ptr; - ret.len = len; - return ret; -} - -static inline wuffs_base__slice_u32 // -wuffs_base__make_slice_u32(uint32_t* ptr, size_t len) { - wuffs_base__slice_u32 ret; - ret.ptr = ptr; - ret.len = len; - return ret; -} - -static inline wuffs_base__slice_u64 // -wuffs_base__make_slice_u64(uint64_t* ptr, size_t len) { - wuffs_base__slice_u64 ret; - ret.ptr = ptr; - ret.len = len; - return ret; -} - -static inline wuffs_base__slice_u8 // -wuffs_base__make_slice_u8_ij(uint8_t* ptr, size_t i, size_t j) { - wuffs_base__slice_u8 ret; - ret.ptr = ptr + i; - ret.len = (j >= i) ? (j - i) : 0; - return ret; -} - -static inline wuffs_base__slice_u16 // -wuffs_base__make_slice_u16_ij(uint16_t* ptr, size_t i, size_t j) { - wuffs_base__slice_u16 ret; - ret.ptr = ptr + i; - ret.len = (j >= i) ? (j - i) : 0; - return ret; -} - -static inline wuffs_base__slice_u32 // -wuffs_base__make_slice_u32_ij(uint32_t* ptr, size_t i, size_t j) { - wuffs_base__slice_u32 ret; - ret.ptr = ptr + i; - ret.len = (j >= i) ? (j - i) : 0; - return ret; -} - -static inline wuffs_base__slice_u64 // -wuffs_base__make_slice_u64_ij(uint64_t* ptr, size_t i, size_t j) { - wuffs_base__slice_u64 ret; - ret.ptr = ptr + i; - ret.len = (j >= i) ? (j - i) : 0; - return ret; -} - -static inline wuffs_base__slice_u8 // -wuffs_base__empty_slice_u8() { - wuffs_base__slice_u8 ret; - ret.ptr = NULL; - ret.len = 0; - return ret; -} - -static inline wuffs_base__slice_u16 // -wuffs_base__empty_slice_u16() { - wuffs_base__slice_u16 ret; - ret.ptr = NULL; - ret.len = 0; - return ret; -} - -static inline wuffs_base__slice_u32 // -wuffs_base__empty_slice_u32() { - wuffs_base__slice_u32 ret; - ret.ptr = NULL; - ret.len = 0; - return ret; -} - -static inline wuffs_base__slice_u64 // -wuffs_base__empty_slice_u64() { - wuffs_base__slice_u64 ret; - ret.ptr = NULL; - ret.len = 0; - return ret; -} - -static inline wuffs_base__table_u8 // -wuffs_base__make_table_u8(uint8_t* ptr, - size_t width, - size_t height, - size_t stride) { - wuffs_base__table_u8 ret; - ret.ptr = ptr; - ret.width = width; - ret.height = height; - ret.stride = stride; - return ret; -} - -static inline wuffs_base__table_u16 // -wuffs_base__make_table_u16(uint16_t* ptr, - size_t width, - size_t height, - size_t stride) { - wuffs_base__table_u16 ret; - ret.ptr = ptr; - ret.width = width; - ret.height = height; - ret.stride = stride; - return ret; -} - -static inline wuffs_base__table_u32 // -wuffs_base__make_table_u32(uint32_t* ptr, - size_t width, - size_t height, - size_t stride) { - wuffs_base__table_u32 ret; - ret.ptr = ptr; - ret.width = width; - ret.height = height; - ret.stride = stride; - return ret; -} - -static inline wuffs_base__table_u64 // -wuffs_base__make_table_u64(uint64_t* ptr, - size_t width, - size_t height, - size_t stride) { - wuffs_base__table_u64 ret; - ret.ptr = ptr; - ret.width = width; - ret.height = height; - ret.stride = stride; - return ret; -} - -static inline wuffs_base__table_u8 // -wuffs_base__empty_table_u8() { - wuffs_base__table_u8 ret; - ret.ptr = NULL; - ret.width = 0; - ret.height = 0; - ret.stride = 0; - return ret; -} - -static inline wuffs_base__table_u16 // -wuffs_base__empty_table_u16() { - wuffs_base__table_u16 ret; - ret.ptr = NULL; - ret.width = 0; - ret.height = 0; - ret.stride = 0; - return ret; -} - -static inline wuffs_base__table_u32 // -wuffs_base__empty_table_u32() { - wuffs_base__table_u32 ret; - ret.ptr = NULL; - ret.width = 0; - ret.height = 0; - ret.stride = 0; - return ret; -} - -static inline wuffs_base__table_u64 // -wuffs_base__empty_table_u64() { - wuffs_base__table_u64 ret; - ret.ptr = NULL; - ret.width = 0; - ret.height = 0; - ret.stride = 0; - return ret; -} - -static inline bool // -wuffs_base__slice_u8__overlaps(wuffs_base__slice_u8 s, wuffs_base__slice_u8 t) { - return ((s.ptr <= t.ptr) && (t.ptr < (s.ptr + s.len))) || - ((t.ptr <= s.ptr) && (s.ptr < (t.ptr + t.len))); -} - -// wuffs_base__slice_u8__subslice_i returns s[i:]. -// -// It returns an empty slice if i is out of bounds. -static inline wuffs_base__slice_u8 // -wuffs_base__slice_u8__subslice_i(wuffs_base__slice_u8 s, uint64_t i) { - if ((i <= SIZE_MAX) && (i <= s.len)) { - return wuffs_base__make_slice_u8(s.ptr + i, ((size_t)(s.len - i))); - } - return wuffs_base__make_slice_u8(NULL, 0); -} - -// wuffs_base__slice_u8__subslice_j returns s[:j]. -// -// It returns an empty slice if j is out of bounds. -static inline wuffs_base__slice_u8 // -wuffs_base__slice_u8__subslice_j(wuffs_base__slice_u8 s, uint64_t j) { - if ((j <= SIZE_MAX) && (j <= s.len)) { - return wuffs_base__make_slice_u8(s.ptr, ((size_t)j)); - } - return wuffs_base__make_slice_u8(NULL, 0); -} - -// wuffs_base__slice_u8__subslice_ij returns s[i:j]. -// -// It returns an empty slice if i or j is out of bounds. -static inline wuffs_base__slice_u8 // -wuffs_base__slice_u8__subslice_ij(wuffs_base__slice_u8 s, - uint64_t i, - uint64_t j) { - if ((i <= j) && (j <= SIZE_MAX) && (j <= s.len)) { - return wuffs_base__make_slice_u8(s.ptr + i, ((size_t)(j - i))); - } - return wuffs_base__make_slice_u8(NULL, 0); -} - -// wuffs_base__table_u8__subtable_ij returns t[ix:jx, iy:jy]. -// -// It returns an empty table if i or j is out of bounds. -static inline wuffs_base__table_u8 // -wuffs_base__table_u8__subtable_ij(wuffs_base__table_u8 t, - uint64_t ix, - uint64_t iy, - uint64_t jx, - uint64_t jy) { - if ((ix <= jx) && (jx <= SIZE_MAX) && (jx <= t.width) && // - (iy <= jy) && (jy <= SIZE_MAX) && (jy <= t.height)) { - return wuffs_base__make_table_u8(t.ptr + ix + (iy * t.stride), // - ((size_t)(jx - ix)), // - ((size_t)(jy - iy)), // - t.stride); // - } - return wuffs_base__make_table_u8(NULL, 0, 0, 0); -} - -// wuffs_base__table__flattened_length returns the number of elements covered -// by the 1-dimensional span that backs a 2-dimensional table. This counts the -// elements inside the table and, when width != stride, the elements outside -// the table but between its rows. -// -// For example, consider a width 10, height 4, stride 10 table. Mark its first -// and last (inclusive) elements with 'a' and 'z'. This function returns 40. -// -// a123456789 -// 0123456789 -// 0123456789 -// 012345678z -// -// Now consider the sub-table of that from (2, 1) inclusive to (8, 4) exclusive. -// -// a123456789 -// 01iiiiiioo -// ooiiiiiioo -// ooiiiiii8z -// -// This function (called with width 6, height 3, stride 10) returns 26: 18 'i' -// inside elements plus 8 'o' outside elements. Note that 26 is less than a -// naive (height * stride = 30) computation. Indeed, advancing 29 elements from -// the first 'i' would venture past 'z', out of bounds of the original table. -// -// It does not check for overflow, but if the arguments come from a table that -// exists in memory and each element occupies a positive number of bytes then -// the result should be bounded by the amount of allocatable memory (which -// shouldn't overflow SIZE_MAX). -static inline size_t // -wuffs_base__table__flattened_length(size_t width, - size_t height, - size_t stride) { - if (height == 0) { - return 0; - } - return ((height - 1) * stride) + width; -} - -// ---------------- Magic Numbers - -// wuffs_base__magic_number_guess_fourcc guesses the file format of some data, -// given its starting bytes (the prefix_data argument) and whether or not there -// may be further bytes (the prefix_closed argument; true means that -// prefix_data is the entire data). -// -// It returns a positive FourCC value on success. -// -// It returns zero if nothing matches its hard-coded list of 'magic numbers'. -// -// It returns a negative value if prefix_closed is false and a longer prefix is -// required for a conclusive result. For example, a single 'B' byte (without -// further data) is not enough to discriminate the BMP and BPG image file -// formats. Similarly, a single '\xFF' byte might be the start of JPEG data or -// it might be the start of some other binary data. -// -// It does not do a full validity check. Like any guess made from a short -// prefix of the data, it may return false positives. Data that starts with 99 -// bytes of valid JPEG followed by corruption or truncation is an invalid JPEG -// image overall, but this function will still return WUFFS_BASE__FOURCC__JPEG. -// -// Another source of false positives is that some 'magic numbers' are valid -// ASCII data. A file starting with "GIF87a and GIF89a are the two versions of -// GIF" will match GIF's 'magic number' even if it's plain text, not an image. -// -// For modular builds that divide the base module into sub-modules, using this -// function requires the WUFFS_CONFIG__MODULE__BASE__MAGIC sub-module, not just -// WUFFS_CONFIG__MODULE__BASE__CORE. -WUFFS_BASE__MAYBE_STATIC int32_t // -wuffs_base__magic_number_guess_fourcc(wuffs_base__slice_u8 prefix_data, - bool prefix_closed); - -// ---------------- Ranges and Rects - -// See https://github.com/google/wuffs/blob/main/doc/note/ranges-and-rects.md - -typedef struct wuffs_base__range_ii_u32__struct { - uint32_t min_incl; - uint32_t max_incl; - -#ifdef __cplusplus - inline bool is_empty() const; - inline bool equals(wuffs_base__range_ii_u32__struct s) const; - inline wuffs_base__range_ii_u32__struct intersect( - wuffs_base__range_ii_u32__struct s) const; - inline wuffs_base__range_ii_u32__struct unite( - wuffs_base__range_ii_u32__struct s) const; - inline bool contains(uint32_t x) const; - inline bool contains_range(wuffs_base__range_ii_u32__struct s) const; -#endif // __cplusplus - -} wuffs_base__range_ii_u32; - -static inline wuffs_base__range_ii_u32 // -wuffs_base__empty_range_ii_u32() { - wuffs_base__range_ii_u32 ret; - ret.min_incl = 0; - ret.max_incl = 0; - return ret; -} - -static inline wuffs_base__range_ii_u32 // -wuffs_base__make_range_ii_u32(uint32_t min_incl, uint32_t max_incl) { - wuffs_base__range_ii_u32 ret; - ret.min_incl = min_incl; - ret.max_incl = max_incl; - return ret; -} - -static inline bool // -wuffs_base__range_ii_u32__is_empty(const wuffs_base__range_ii_u32* r) { - return r->min_incl > r->max_incl; -} - -static inline bool // -wuffs_base__range_ii_u32__equals(const wuffs_base__range_ii_u32* r, - wuffs_base__range_ii_u32 s) { - return (r->min_incl == s.min_incl && r->max_incl == s.max_incl) || - (wuffs_base__range_ii_u32__is_empty(r) && - wuffs_base__range_ii_u32__is_empty(&s)); -} - -static inline wuffs_base__range_ii_u32 // -wuffs_base__range_ii_u32__intersect(const wuffs_base__range_ii_u32* r, - wuffs_base__range_ii_u32 s) { - wuffs_base__range_ii_u32 t; - t.min_incl = wuffs_base__u32__max(r->min_incl, s.min_incl); - t.max_incl = wuffs_base__u32__min(r->max_incl, s.max_incl); - return t; -} - -static inline wuffs_base__range_ii_u32 // -wuffs_base__range_ii_u32__unite(const wuffs_base__range_ii_u32* r, - wuffs_base__range_ii_u32 s) { - if (wuffs_base__range_ii_u32__is_empty(r)) { - return s; - } - if (wuffs_base__range_ii_u32__is_empty(&s)) { - return *r; - } - wuffs_base__range_ii_u32 t; - t.min_incl = wuffs_base__u32__min(r->min_incl, s.min_incl); - t.max_incl = wuffs_base__u32__max(r->max_incl, s.max_incl); - return t; -} - -static inline bool // -wuffs_base__range_ii_u32__contains(const wuffs_base__range_ii_u32* r, - uint32_t x) { - return (r->min_incl <= x) && (x <= r->max_incl); -} - -static inline bool // -wuffs_base__range_ii_u32__contains_range(const wuffs_base__range_ii_u32* r, - wuffs_base__range_ii_u32 s) { - return wuffs_base__range_ii_u32__equals( - &s, wuffs_base__range_ii_u32__intersect(r, s)); -} - -#ifdef __cplusplus - -inline bool // -wuffs_base__range_ii_u32::is_empty() const { - return wuffs_base__range_ii_u32__is_empty(this); -} - -inline bool // -wuffs_base__range_ii_u32::equals(wuffs_base__range_ii_u32 s) const { - return wuffs_base__range_ii_u32__equals(this, s); -} - -inline wuffs_base__range_ii_u32 // -wuffs_base__range_ii_u32::intersect(wuffs_base__range_ii_u32 s) const { - return wuffs_base__range_ii_u32__intersect(this, s); -} - -inline wuffs_base__range_ii_u32 // -wuffs_base__range_ii_u32::unite(wuffs_base__range_ii_u32 s) const { - return wuffs_base__range_ii_u32__unite(this, s); -} - -inline bool // -wuffs_base__range_ii_u32::contains(uint32_t x) const { - return wuffs_base__range_ii_u32__contains(this, x); -} - -inline bool // -wuffs_base__range_ii_u32::contains_range(wuffs_base__range_ii_u32 s) const { - return wuffs_base__range_ii_u32__contains_range(this, s); -} - -#endif // __cplusplus - -// -------- - -typedef struct wuffs_base__range_ie_u32__struct { - uint32_t min_incl; - uint32_t max_excl; - -#ifdef __cplusplus - inline bool is_empty() const; - inline bool equals(wuffs_base__range_ie_u32__struct s) const; - inline wuffs_base__range_ie_u32__struct intersect( - wuffs_base__range_ie_u32__struct s) const; - inline wuffs_base__range_ie_u32__struct unite( - wuffs_base__range_ie_u32__struct s) const; - inline bool contains(uint32_t x) const; - inline bool contains_range(wuffs_base__range_ie_u32__struct s) const; - inline uint32_t length() const; -#endif // __cplusplus - -} wuffs_base__range_ie_u32; - -static inline wuffs_base__range_ie_u32 // -wuffs_base__empty_range_ie_u32() { - wuffs_base__range_ie_u32 ret; - ret.min_incl = 0; - ret.max_excl = 0; - return ret; -} - -static inline wuffs_base__range_ie_u32 // -wuffs_base__make_range_ie_u32(uint32_t min_incl, uint32_t max_excl) { - wuffs_base__range_ie_u32 ret; - ret.min_incl = min_incl; - ret.max_excl = max_excl; - return ret; -} - -static inline bool // -wuffs_base__range_ie_u32__is_empty(const wuffs_base__range_ie_u32* r) { - return r->min_incl >= r->max_excl; -} - -static inline bool // -wuffs_base__range_ie_u32__equals(const wuffs_base__range_ie_u32* r, - wuffs_base__range_ie_u32 s) { - return (r->min_incl == s.min_incl && r->max_excl == s.max_excl) || - (wuffs_base__range_ie_u32__is_empty(r) && - wuffs_base__range_ie_u32__is_empty(&s)); -} - -static inline wuffs_base__range_ie_u32 // -wuffs_base__range_ie_u32__intersect(const wuffs_base__range_ie_u32* r, - wuffs_base__range_ie_u32 s) { - wuffs_base__range_ie_u32 t; - t.min_incl = wuffs_base__u32__max(r->min_incl, s.min_incl); - t.max_excl = wuffs_base__u32__min(r->max_excl, s.max_excl); - return t; -} - -static inline wuffs_base__range_ie_u32 // -wuffs_base__range_ie_u32__unite(const wuffs_base__range_ie_u32* r, - wuffs_base__range_ie_u32 s) { - if (wuffs_base__range_ie_u32__is_empty(r)) { - return s; - } - if (wuffs_base__range_ie_u32__is_empty(&s)) { - return *r; - } - wuffs_base__range_ie_u32 t; - t.min_incl = wuffs_base__u32__min(r->min_incl, s.min_incl); - t.max_excl = wuffs_base__u32__max(r->max_excl, s.max_excl); - return t; -} - -static inline bool // -wuffs_base__range_ie_u32__contains(const wuffs_base__range_ie_u32* r, - uint32_t x) { - return (r->min_incl <= x) && (x < r->max_excl); -} - -static inline bool // -wuffs_base__range_ie_u32__contains_range(const wuffs_base__range_ie_u32* r, - wuffs_base__range_ie_u32 s) { - return wuffs_base__range_ie_u32__equals( - &s, wuffs_base__range_ie_u32__intersect(r, s)); -} - -static inline uint32_t // -wuffs_base__range_ie_u32__length(const wuffs_base__range_ie_u32* r) { - return wuffs_base__u32__sat_sub(r->max_excl, r->min_incl); -} - -#ifdef __cplusplus - -inline bool // -wuffs_base__range_ie_u32::is_empty() const { - return wuffs_base__range_ie_u32__is_empty(this); -} - -inline bool // -wuffs_base__range_ie_u32::equals(wuffs_base__range_ie_u32 s) const { - return wuffs_base__range_ie_u32__equals(this, s); -} - -inline wuffs_base__range_ie_u32 // -wuffs_base__range_ie_u32::intersect(wuffs_base__range_ie_u32 s) const { - return wuffs_base__range_ie_u32__intersect(this, s); -} - -inline wuffs_base__range_ie_u32 // -wuffs_base__range_ie_u32::unite(wuffs_base__range_ie_u32 s) const { - return wuffs_base__range_ie_u32__unite(this, s); -} - -inline bool // -wuffs_base__range_ie_u32::contains(uint32_t x) const { - return wuffs_base__range_ie_u32__contains(this, x); -} - -inline bool // -wuffs_base__range_ie_u32::contains_range(wuffs_base__range_ie_u32 s) const { - return wuffs_base__range_ie_u32__contains_range(this, s); -} - -inline uint32_t // -wuffs_base__range_ie_u32::length() const { - return wuffs_base__range_ie_u32__length(this); -} - -#endif // __cplusplus - -// -------- - -typedef struct wuffs_base__range_ii_u64__struct { - uint64_t min_incl; - uint64_t max_incl; - -#ifdef __cplusplus - inline bool is_empty() const; - inline bool equals(wuffs_base__range_ii_u64__struct s) const; - inline wuffs_base__range_ii_u64__struct intersect( - wuffs_base__range_ii_u64__struct s) const; - inline wuffs_base__range_ii_u64__struct unite( - wuffs_base__range_ii_u64__struct s) const; - inline bool contains(uint64_t x) const; - inline bool contains_range(wuffs_base__range_ii_u64__struct s) const; -#endif // __cplusplus - -} wuffs_base__range_ii_u64; - -static inline wuffs_base__range_ii_u64 // -wuffs_base__empty_range_ii_u64() { - wuffs_base__range_ii_u64 ret; - ret.min_incl = 0; - ret.max_incl = 0; - return ret; -} - -static inline wuffs_base__range_ii_u64 // -wuffs_base__make_range_ii_u64(uint64_t min_incl, uint64_t max_incl) { - wuffs_base__range_ii_u64 ret; - ret.min_incl = min_incl; - ret.max_incl = max_incl; - return ret; -} - -static inline bool // -wuffs_base__range_ii_u64__is_empty(const wuffs_base__range_ii_u64* r) { - return r->min_incl > r->max_incl; -} - -static inline bool // -wuffs_base__range_ii_u64__equals(const wuffs_base__range_ii_u64* r, - wuffs_base__range_ii_u64 s) { - return (r->min_incl == s.min_incl && r->max_incl == s.max_incl) || - (wuffs_base__range_ii_u64__is_empty(r) && - wuffs_base__range_ii_u64__is_empty(&s)); -} - -static inline wuffs_base__range_ii_u64 // -wuffs_base__range_ii_u64__intersect(const wuffs_base__range_ii_u64* r, - wuffs_base__range_ii_u64 s) { - wuffs_base__range_ii_u64 t; - t.min_incl = wuffs_base__u64__max(r->min_incl, s.min_incl); - t.max_incl = wuffs_base__u64__min(r->max_incl, s.max_incl); - return t; -} - -static inline wuffs_base__range_ii_u64 // -wuffs_base__range_ii_u64__unite(const wuffs_base__range_ii_u64* r, - wuffs_base__range_ii_u64 s) { - if (wuffs_base__range_ii_u64__is_empty(r)) { - return s; - } - if (wuffs_base__range_ii_u64__is_empty(&s)) { - return *r; - } - wuffs_base__range_ii_u64 t; - t.min_incl = wuffs_base__u64__min(r->min_incl, s.min_incl); - t.max_incl = wuffs_base__u64__max(r->max_incl, s.max_incl); - return t; -} - -static inline bool // -wuffs_base__range_ii_u64__contains(const wuffs_base__range_ii_u64* r, - uint64_t x) { - return (r->min_incl <= x) && (x <= r->max_incl); -} - -static inline bool // -wuffs_base__range_ii_u64__contains_range(const wuffs_base__range_ii_u64* r, - wuffs_base__range_ii_u64 s) { - return wuffs_base__range_ii_u64__equals( - &s, wuffs_base__range_ii_u64__intersect(r, s)); -} - -#ifdef __cplusplus - -inline bool // -wuffs_base__range_ii_u64::is_empty() const { - return wuffs_base__range_ii_u64__is_empty(this); -} - -inline bool // -wuffs_base__range_ii_u64::equals(wuffs_base__range_ii_u64 s) const { - return wuffs_base__range_ii_u64__equals(this, s); -} - -inline wuffs_base__range_ii_u64 // -wuffs_base__range_ii_u64::intersect(wuffs_base__range_ii_u64 s) const { - return wuffs_base__range_ii_u64__intersect(this, s); -} - -inline wuffs_base__range_ii_u64 // -wuffs_base__range_ii_u64::unite(wuffs_base__range_ii_u64 s) const { - return wuffs_base__range_ii_u64__unite(this, s); -} - -inline bool // -wuffs_base__range_ii_u64::contains(uint64_t x) const { - return wuffs_base__range_ii_u64__contains(this, x); -} - -inline bool // -wuffs_base__range_ii_u64::contains_range(wuffs_base__range_ii_u64 s) const { - return wuffs_base__range_ii_u64__contains_range(this, s); -} - -#endif // __cplusplus - -// -------- - -typedef struct wuffs_base__range_ie_u64__struct { - uint64_t min_incl; - uint64_t max_excl; - -#ifdef __cplusplus - inline bool is_empty() const; - inline bool equals(wuffs_base__range_ie_u64__struct s) const; - inline wuffs_base__range_ie_u64__struct intersect( - wuffs_base__range_ie_u64__struct s) const; - inline wuffs_base__range_ie_u64__struct unite( - wuffs_base__range_ie_u64__struct s) const; - inline bool contains(uint64_t x) const; - inline bool contains_range(wuffs_base__range_ie_u64__struct s) const; - inline uint64_t length() const; -#endif // __cplusplus - -} wuffs_base__range_ie_u64; - -static inline wuffs_base__range_ie_u64 // -wuffs_base__empty_range_ie_u64() { - wuffs_base__range_ie_u64 ret; - ret.min_incl = 0; - ret.max_excl = 0; - return ret; -} - -static inline wuffs_base__range_ie_u64 // -wuffs_base__make_range_ie_u64(uint64_t min_incl, uint64_t max_excl) { - wuffs_base__range_ie_u64 ret; - ret.min_incl = min_incl; - ret.max_excl = max_excl; - return ret; -} - -static inline bool // -wuffs_base__range_ie_u64__is_empty(const wuffs_base__range_ie_u64* r) { - return r->min_incl >= r->max_excl; -} - -static inline bool // -wuffs_base__range_ie_u64__equals(const wuffs_base__range_ie_u64* r, - wuffs_base__range_ie_u64 s) { - return (r->min_incl == s.min_incl && r->max_excl == s.max_excl) || - (wuffs_base__range_ie_u64__is_empty(r) && - wuffs_base__range_ie_u64__is_empty(&s)); -} - -static inline wuffs_base__range_ie_u64 // -wuffs_base__range_ie_u64__intersect(const wuffs_base__range_ie_u64* r, - wuffs_base__range_ie_u64 s) { - wuffs_base__range_ie_u64 t; - t.min_incl = wuffs_base__u64__max(r->min_incl, s.min_incl); - t.max_excl = wuffs_base__u64__min(r->max_excl, s.max_excl); - return t; -} - -static inline wuffs_base__range_ie_u64 // -wuffs_base__range_ie_u64__unite(const wuffs_base__range_ie_u64* r, - wuffs_base__range_ie_u64 s) { - if (wuffs_base__range_ie_u64__is_empty(r)) { - return s; - } - if (wuffs_base__range_ie_u64__is_empty(&s)) { - return *r; - } - wuffs_base__range_ie_u64 t; - t.min_incl = wuffs_base__u64__min(r->min_incl, s.min_incl); - t.max_excl = wuffs_base__u64__max(r->max_excl, s.max_excl); - return t; -} - -static inline bool // -wuffs_base__range_ie_u64__contains(const wuffs_base__range_ie_u64* r, - uint64_t x) { - return (r->min_incl <= x) && (x < r->max_excl); -} - -static inline bool // -wuffs_base__range_ie_u64__contains_range(const wuffs_base__range_ie_u64* r, - wuffs_base__range_ie_u64 s) { - return wuffs_base__range_ie_u64__equals( - &s, wuffs_base__range_ie_u64__intersect(r, s)); -} - -static inline uint64_t // -wuffs_base__range_ie_u64__length(const wuffs_base__range_ie_u64* r) { - return wuffs_base__u64__sat_sub(r->max_excl, r->min_incl); -} - -#ifdef __cplusplus - -inline bool // -wuffs_base__range_ie_u64::is_empty() const { - return wuffs_base__range_ie_u64__is_empty(this); -} - -inline bool // -wuffs_base__range_ie_u64::equals(wuffs_base__range_ie_u64 s) const { - return wuffs_base__range_ie_u64__equals(this, s); -} - -inline wuffs_base__range_ie_u64 // -wuffs_base__range_ie_u64::intersect(wuffs_base__range_ie_u64 s) const { - return wuffs_base__range_ie_u64__intersect(this, s); -} - -inline wuffs_base__range_ie_u64 // -wuffs_base__range_ie_u64::unite(wuffs_base__range_ie_u64 s) const { - return wuffs_base__range_ie_u64__unite(this, s); -} - -inline bool // -wuffs_base__range_ie_u64::contains(uint64_t x) const { - return wuffs_base__range_ie_u64__contains(this, x); -} - -inline bool // -wuffs_base__range_ie_u64::contains_range(wuffs_base__range_ie_u64 s) const { - return wuffs_base__range_ie_u64__contains_range(this, s); -} - -inline uint64_t // -wuffs_base__range_ie_u64::length() const { - return wuffs_base__range_ie_u64__length(this); -} - -#endif // __cplusplus - -// -------- - -typedef struct wuffs_base__rect_ii_u32__struct { - uint32_t min_incl_x; - uint32_t min_incl_y; - uint32_t max_incl_x; - uint32_t max_incl_y; - -#ifdef __cplusplus - inline bool is_empty() const; - inline bool equals(wuffs_base__rect_ii_u32__struct s) const; - inline wuffs_base__rect_ii_u32__struct intersect( - wuffs_base__rect_ii_u32__struct s) const; - inline wuffs_base__rect_ii_u32__struct unite( - wuffs_base__rect_ii_u32__struct s) const; - inline bool contains(uint32_t x, uint32_t y) const; - inline bool contains_rect(wuffs_base__rect_ii_u32__struct s) const; -#endif // __cplusplus - -} wuffs_base__rect_ii_u32; - -static inline wuffs_base__rect_ii_u32 // -wuffs_base__empty_rect_ii_u32() { - wuffs_base__rect_ii_u32 ret; - ret.min_incl_x = 0; - ret.min_incl_y = 0; - ret.max_incl_x = 0; - ret.max_incl_y = 0; - return ret; -} - -static inline wuffs_base__rect_ii_u32 // -wuffs_base__make_rect_ii_u32(uint32_t min_incl_x, - uint32_t min_incl_y, - uint32_t max_incl_x, - uint32_t max_incl_y) { - wuffs_base__rect_ii_u32 ret; - ret.min_incl_x = min_incl_x; - ret.min_incl_y = min_incl_y; - ret.max_incl_x = max_incl_x; - ret.max_incl_y = max_incl_y; - return ret; -} - -static inline bool // -wuffs_base__rect_ii_u32__is_empty(const wuffs_base__rect_ii_u32* r) { - return (r->min_incl_x > r->max_incl_x) || (r->min_incl_y > r->max_incl_y); -} - -static inline bool // -wuffs_base__rect_ii_u32__equals(const wuffs_base__rect_ii_u32* r, - wuffs_base__rect_ii_u32 s) { - return (r->min_incl_x == s.min_incl_x && r->min_incl_y == s.min_incl_y && - r->max_incl_x == s.max_incl_x && r->max_incl_y == s.max_incl_y) || - (wuffs_base__rect_ii_u32__is_empty(r) && - wuffs_base__rect_ii_u32__is_empty(&s)); -} - -static inline wuffs_base__rect_ii_u32 // -wuffs_base__rect_ii_u32__intersect(const wuffs_base__rect_ii_u32* r, - wuffs_base__rect_ii_u32 s) { - wuffs_base__rect_ii_u32 t; - t.min_incl_x = wuffs_base__u32__max(r->min_incl_x, s.min_incl_x); - t.min_incl_y = wuffs_base__u32__max(r->min_incl_y, s.min_incl_y); - t.max_incl_x = wuffs_base__u32__min(r->max_incl_x, s.max_incl_x); - t.max_incl_y = wuffs_base__u32__min(r->max_incl_y, s.max_incl_y); - return t; -} - -static inline wuffs_base__rect_ii_u32 // -wuffs_base__rect_ii_u32__unite(const wuffs_base__rect_ii_u32* r, - wuffs_base__rect_ii_u32 s) { - if (wuffs_base__rect_ii_u32__is_empty(r)) { - return s; - } - if (wuffs_base__rect_ii_u32__is_empty(&s)) { - return *r; - } - wuffs_base__rect_ii_u32 t; - t.min_incl_x = wuffs_base__u32__min(r->min_incl_x, s.min_incl_x); - t.min_incl_y = wuffs_base__u32__min(r->min_incl_y, s.min_incl_y); - t.max_incl_x = wuffs_base__u32__max(r->max_incl_x, s.max_incl_x); - t.max_incl_y = wuffs_base__u32__max(r->max_incl_y, s.max_incl_y); - return t; -} - -static inline bool // -wuffs_base__rect_ii_u32__contains(const wuffs_base__rect_ii_u32* r, - uint32_t x, - uint32_t y) { - return (r->min_incl_x <= x) && (x <= r->max_incl_x) && (r->min_incl_y <= y) && - (y <= r->max_incl_y); -} - -static inline bool // -wuffs_base__rect_ii_u32__contains_rect(const wuffs_base__rect_ii_u32* r, - wuffs_base__rect_ii_u32 s) { - return wuffs_base__rect_ii_u32__equals( - &s, wuffs_base__rect_ii_u32__intersect(r, s)); -} - -#ifdef __cplusplus - -inline bool // -wuffs_base__rect_ii_u32::is_empty() const { - return wuffs_base__rect_ii_u32__is_empty(this); -} - -inline bool // -wuffs_base__rect_ii_u32::equals(wuffs_base__rect_ii_u32 s) const { - return wuffs_base__rect_ii_u32__equals(this, s); -} - -inline wuffs_base__rect_ii_u32 // -wuffs_base__rect_ii_u32::intersect(wuffs_base__rect_ii_u32 s) const { - return wuffs_base__rect_ii_u32__intersect(this, s); -} - -inline wuffs_base__rect_ii_u32 // -wuffs_base__rect_ii_u32::unite(wuffs_base__rect_ii_u32 s) const { - return wuffs_base__rect_ii_u32__unite(this, s); -} - -inline bool // -wuffs_base__rect_ii_u32::contains(uint32_t x, uint32_t y) const { - return wuffs_base__rect_ii_u32__contains(this, x, y); -} - -inline bool // -wuffs_base__rect_ii_u32::contains_rect(wuffs_base__rect_ii_u32 s) const { - return wuffs_base__rect_ii_u32__contains_rect(this, s); -} - -#endif // __cplusplus - -// -------- - -typedef struct wuffs_base__rect_ie_u32__struct { - uint32_t min_incl_x; - uint32_t min_incl_y; - uint32_t max_excl_x; - uint32_t max_excl_y; - -#ifdef __cplusplus - inline bool is_empty() const; - inline bool equals(wuffs_base__rect_ie_u32__struct s) const; - inline wuffs_base__rect_ie_u32__struct intersect( - wuffs_base__rect_ie_u32__struct s) const; - inline wuffs_base__rect_ie_u32__struct unite( - wuffs_base__rect_ie_u32__struct s) const; - inline bool contains(uint32_t x, uint32_t y) const; - inline bool contains_rect(wuffs_base__rect_ie_u32__struct s) const; - inline uint32_t width() const; - inline uint32_t height() const; -#endif // __cplusplus - -} wuffs_base__rect_ie_u32; - -static inline wuffs_base__rect_ie_u32 // -wuffs_base__empty_rect_ie_u32() { - wuffs_base__rect_ie_u32 ret; - ret.min_incl_x = 0; - ret.min_incl_y = 0; - ret.max_excl_x = 0; - ret.max_excl_y = 0; - return ret; -} - -static inline wuffs_base__rect_ie_u32 // -wuffs_base__make_rect_ie_u32(uint32_t min_incl_x, - uint32_t min_incl_y, - uint32_t max_excl_x, - uint32_t max_excl_y) { - wuffs_base__rect_ie_u32 ret; - ret.min_incl_x = min_incl_x; - ret.min_incl_y = min_incl_y; - ret.max_excl_x = max_excl_x; - ret.max_excl_y = max_excl_y; - return ret; -} - -static inline bool // -wuffs_base__rect_ie_u32__is_empty(const wuffs_base__rect_ie_u32* r) { - return (r->min_incl_x >= r->max_excl_x) || (r->min_incl_y >= r->max_excl_y); -} - -static inline bool // -wuffs_base__rect_ie_u32__equals(const wuffs_base__rect_ie_u32* r, - wuffs_base__rect_ie_u32 s) { - return (r->min_incl_x == s.min_incl_x && r->min_incl_y == s.min_incl_y && - r->max_excl_x == s.max_excl_x && r->max_excl_y == s.max_excl_y) || - (wuffs_base__rect_ie_u32__is_empty(r) && - wuffs_base__rect_ie_u32__is_empty(&s)); -} - -static inline wuffs_base__rect_ie_u32 // -wuffs_base__rect_ie_u32__intersect(const wuffs_base__rect_ie_u32* r, - wuffs_base__rect_ie_u32 s) { - wuffs_base__rect_ie_u32 t; - t.min_incl_x = wuffs_base__u32__max(r->min_incl_x, s.min_incl_x); - t.min_incl_y = wuffs_base__u32__max(r->min_incl_y, s.min_incl_y); - t.max_excl_x = wuffs_base__u32__min(r->max_excl_x, s.max_excl_x); - t.max_excl_y = wuffs_base__u32__min(r->max_excl_y, s.max_excl_y); - return t; -} - -static inline wuffs_base__rect_ie_u32 // -wuffs_base__rect_ie_u32__unite(const wuffs_base__rect_ie_u32* r, - wuffs_base__rect_ie_u32 s) { - if (wuffs_base__rect_ie_u32__is_empty(r)) { - return s; - } - if (wuffs_base__rect_ie_u32__is_empty(&s)) { - return *r; - } - wuffs_base__rect_ie_u32 t; - t.min_incl_x = wuffs_base__u32__min(r->min_incl_x, s.min_incl_x); - t.min_incl_y = wuffs_base__u32__min(r->min_incl_y, s.min_incl_y); - t.max_excl_x = wuffs_base__u32__max(r->max_excl_x, s.max_excl_x); - t.max_excl_y = wuffs_base__u32__max(r->max_excl_y, s.max_excl_y); - return t; -} - -static inline bool // -wuffs_base__rect_ie_u32__contains(const wuffs_base__rect_ie_u32* r, - uint32_t x, - uint32_t y) { - return (r->min_incl_x <= x) && (x < r->max_excl_x) && (r->min_incl_y <= y) && - (y < r->max_excl_y); -} - -static inline bool // -wuffs_base__rect_ie_u32__contains_rect(const wuffs_base__rect_ie_u32* r, - wuffs_base__rect_ie_u32 s) { - return wuffs_base__rect_ie_u32__equals( - &s, wuffs_base__rect_ie_u32__intersect(r, s)); -} - -static inline uint32_t // -wuffs_base__rect_ie_u32__width(const wuffs_base__rect_ie_u32* r) { - return wuffs_base__u32__sat_sub(r->max_excl_x, r->min_incl_x); -} - -static inline uint32_t // -wuffs_base__rect_ie_u32__height(const wuffs_base__rect_ie_u32* r) { - return wuffs_base__u32__sat_sub(r->max_excl_y, r->min_incl_y); -} - -#ifdef __cplusplus - -inline bool // -wuffs_base__rect_ie_u32::is_empty() const { - return wuffs_base__rect_ie_u32__is_empty(this); -} - -inline bool // -wuffs_base__rect_ie_u32::equals(wuffs_base__rect_ie_u32 s) const { - return wuffs_base__rect_ie_u32__equals(this, s); -} - -inline wuffs_base__rect_ie_u32 // -wuffs_base__rect_ie_u32::intersect(wuffs_base__rect_ie_u32 s) const { - return wuffs_base__rect_ie_u32__intersect(this, s); -} - -inline wuffs_base__rect_ie_u32 // -wuffs_base__rect_ie_u32::unite(wuffs_base__rect_ie_u32 s) const { - return wuffs_base__rect_ie_u32__unite(this, s); -} - -inline bool // -wuffs_base__rect_ie_u32::contains(uint32_t x, uint32_t y) const { - return wuffs_base__rect_ie_u32__contains(this, x, y); -} - -inline bool // -wuffs_base__rect_ie_u32::contains_rect(wuffs_base__rect_ie_u32 s) const { - return wuffs_base__rect_ie_u32__contains_rect(this, s); -} - -inline uint32_t // -wuffs_base__rect_ie_u32::width() const { - return wuffs_base__rect_ie_u32__width(this); -} - -inline uint32_t // -wuffs_base__rect_ie_u32::height() const { - return wuffs_base__rect_ie_u32__height(this); -} - -#endif // __cplusplus - -// ---------------- More Information - -// wuffs_base__more_information holds additional fields, typically when a Wuffs -// method returns a [note status](/doc/note/statuses.md). -// -// The flavor field follows the base38 namespace -// convention](/doc/note/base38-and-fourcc.md). The other fields' semantics -// depends on the flavor. -typedef struct wuffs_base__more_information__struct { - uint32_t flavor; - uint32_t w; - uint64_t x; - uint64_t y; - uint64_t z; - -#ifdef __cplusplus - inline void set(uint32_t flavor_arg, - uint32_t w_arg, - uint64_t x_arg, - uint64_t y_arg, - uint64_t z_arg); - inline uint32_t io_redirect__fourcc() const; - inline wuffs_base__range_ie_u64 io_redirect__range() const; - inline uint64_t io_seek__position() const; - inline uint32_t metadata__fourcc() const; - inline wuffs_base__range_ie_u64 metadata_raw_passthrough__range() const; - inline int32_t metadata_parsed__chrm(uint32_t component) const; - inline uint32_t metadata_parsed__gama() const; - inline uint32_t metadata_parsed__srgb() const; -#endif // __cplusplus - -} wuffs_base__more_information; - -#define WUFFS_BASE__MORE_INFORMATION__FLAVOR__IO_REDIRECT 1 -#define WUFFS_BASE__MORE_INFORMATION__FLAVOR__IO_SEEK 2 -#define WUFFS_BASE__MORE_INFORMATION__FLAVOR__METADATA_RAW_PASSTHROUGH 3 -#define WUFFS_BASE__MORE_INFORMATION__FLAVOR__METADATA_RAW_TRANSFORM 4 -#define WUFFS_BASE__MORE_INFORMATION__FLAVOR__METADATA_PARSED 5 - -static inline wuffs_base__more_information // -wuffs_base__empty_more_information() { - wuffs_base__more_information ret; - ret.flavor = 0; - ret.w = 0; - ret.x = 0; - ret.y = 0; - ret.z = 0; - return ret; -} - -static inline void // -wuffs_base__more_information__set(wuffs_base__more_information* m, - uint32_t flavor, - uint32_t w, - uint64_t x, - uint64_t y, - uint64_t z) { - if (!m) { - return; - } - m->flavor = flavor; - m->w = w; - m->x = x; - m->y = y; - m->z = z; -} - -static inline uint32_t // -wuffs_base__more_information__io_redirect__fourcc( - const wuffs_base__more_information* m) { - return m->w; -} - -static inline wuffs_base__range_ie_u64 // -wuffs_base__more_information__io_redirect__range( - const wuffs_base__more_information* m) { - wuffs_base__range_ie_u64 ret; - ret.min_incl = m->y; - ret.max_excl = m->z; - return ret; -} - -static inline uint64_t // -wuffs_base__more_information__io_seek__position( - const wuffs_base__more_information* m) { - return m->x; -} - -static inline uint32_t // -wuffs_base__more_information__metadata__fourcc( - const wuffs_base__more_information* m) { - return m->w; -} - -static inline wuffs_base__range_ie_u64 // -wuffs_base__more_information__metadata_raw_passthrough__range( - const wuffs_base__more_information* m) { - wuffs_base__range_ie_u64 ret; - ret.min_incl = m->y; - ret.max_excl = m->z; - return ret; -} - -#define WUFFS_BASE__MORE_INFORMATION__METADATA_PARSED__CHRM__WHITE_X 0 -#define WUFFS_BASE__MORE_INFORMATION__METADATA_PARSED__CHRM__WHITE_Y 1 -#define WUFFS_BASE__MORE_INFORMATION__METADATA_PARSED__CHRM__RED_X 2 -#define WUFFS_BASE__MORE_INFORMATION__METADATA_PARSED__CHRM__RED_Y 3 -#define WUFFS_BASE__MORE_INFORMATION__METADATA_PARSED__CHRM__GREEN_X 4 -#define WUFFS_BASE__MORE_INFORMATION__METADATA_PARSED__CHRM__GREEN_Y 5 -#define WUFFS_BASE__MORE_INFORMATION__METADATA_PARSED__CHRM__BLUE_X 6 -#define WUFFS_BASE__MORE_INFORMATION__METADATA_PARSED__CHRM__BLUE_Y 7 - -// wuffs_base__more_information__metadata_parsed__chrm returns chromaticity -// values (scaled by 100000) like the PNG "cHRM" chunk. For example, the sRGB -// color space corresponds to: -// - ETC__CHRM__WHITE_X 31270 -// - ETC__CHRM__WHITE_Y 32900 -// - ETC__CHRM__RED_X 64000 -// - ETC__CHRM__RED_Y 33000 -// - ETC__CHRM__GREEN_X 30000 -// - ETC__CHRM__GREEN_Y 60000 -// - ETC__CHRM__BLUE_X 15000 -// - ETC__CHRM__BLUE_Y 6000 -// -// See -// https://ciechanow.ski/color-spaces/#chromaticity-and-white-point-coordinates -static inline int32_t // -wuffs_base__more_information__metadata_parsed__chrm( - const wuffs_base__more_information* m, - uint32_t component) { - // After the flavor and the w field (holding a FourCC), a - // wuffs_base__more_information holds 24 bytes of data in three uint64_t - // typed fields (x, y and z). We pack the eight chromaticity values (wx, wy, - // rx, ..., by), basically int24_t values, into 24 bytes like this: - // - LSB MSB - // - x: wx wx wx wy wy wy rx rx - // - y: rx ry ry ry gx gx gx gy - // - z: gy gy bx bx bx by by by - uint32_t u = 0; - switch (component & 7) { - case 0: - u = ((uint32_t)(m->x >> 0)); - break; - case 1: - u = ((uint32_t)(m->x >> 24)); - break; - case 2: - u = ((uint32_t)((m->x >> 48) | (m->y << 16))); - break; - case 3: - u = ((uint32_t)(m->y >> 8)); - break; - case 4: - u = ((uint32_t)(m->y >> 32)); - break; - case 5: - u = ((uint32_t)((m->y >> 56) | (m->z << 8))); - break; - case 6: - u = ((uint32_t)(m->z >> 16)); - break; - case 7: - u = ((uint32_t)(m->z >> 40)); - break; - } - // The left-right shifts sign-extend from 24-bit to 32-bit integers. - return ((int32_t)(u << 8)) >> 8; -} - -// wuffs_base__more_information__metadata_parsed__gama returns inverse gamma -// correction values (scaled by 100000) like the PNG "gAMA" chunk. For example, -// for gamma = 2.2, this returns 45455 (approximating 100000 / 2.2). -static inline uint32_t // -wuffs_base__more_information__metadata_parsed__gama( - const wuffs_base__more_information* m) { - return ((uint32_t)(m->x)); -} - -#define WUFFS_BASE__SRGB_RENDERING_INTENT__PERCEPTUAL 0 -#define WUFFS_BASE__SRGB_RENDERING_INTENT__RELATIVE_COLORIMETRIC 1 -#define WUFFS_BASE__SRGB_RENDERING_INTENT__SATURATION 2 -#define WUFFS_BASE__SRGB_RENDERING_INTENT__ABSOLUTE_COLORIMETRIC 3 - -// wuffs_base__more_information__metadata_parsed__srgb returns the sRGB -// rendering intent like the PNG "sRGB" chunk. -static inline uint32_t // -wuffs_base__more_information__metadata_parsed__srgb( - const wuffs_base__more_information* m) { - return m->x & 3; -} - -#ifdef __cplusplus - -inline void // -wuffs_base__more_information::set(uint32_t flavor_arg, - uint32_t w_arg, - uint64_t x_arg, - uint64_t y_arg, - uint64_t z_arg) { - wuffs_base__more_information__set(this, flavor_arg, w_arg, x_arg, y_arg, - z_arg); -} - -inline uint32_t // -wuffs_base__more_information::io_redirect__fourcc() const { - return wuffs_base__more_information__io_redirect__fourcc(this); -} - -inline wuffs_base__range_ie_u64 // -wuffs_base__more_information::io_redirect__range() const { - return wuffs_base__more_information__io_redirect__range(this); -} - -inline uint64_t // -wuffs_base__more_information::io_seek__position() const { - return wuffs_base__more_information__io_seek__position(this); -} - -inline uint32_t // -wuffs_base__more_information::metadata__fourcc() const { - return wuffs_base__more_information__metadata__fourcc(this); -} - -inline wuffs_base__range_ie_u64 // -wuffs_base__more_information::metadata_raw_passthrough__range() const { - return wuffs_base__more_information__metadata_raw_passthrough__range(this); -} - -inline int32_t // -wuffs_base__more_information::metadata_parsed__chrm(uint32_t component) const { - return wuffs_base__more_information__metadata_parsed__chrm(this, component); -} - -inline uint32_t // -wuffs_base__more_information::metadata_parsed__gama() const { - return wuffs_base__more_information__metadata_parsed__gama(this); -} - -inline uint32_t // -wuffs_base__more_information::metadata_parsed__srgb() const { - return wuffs_base__more_information__metadata_parsed__srgb(this); -} - -#endif // __cplusplus - -// ---------------- I/O -// -// See (/doc/note/io-input-output.md). - -// wuffs_base__io_buffer_meta is the metadata for a wuffs_base__io_buffer's -// data. -typedef struct wuffs_base__io_buffer_meta__struct { - size_t wi; // Write index. Invariant: wi <= len. - size_t ri; // Read index. Invariant: ri <= wi. - uint64_t pos; // Buffer position (relative to the start of stream). - bool closed; // No further writes are expected. -} wuffs_base__io_buffer_meta; - -// wuffs_base__io_buffer is a 1-dimensional buffer (a pointer and length) plus -// additional metadata. -// -// A value with all fields zero is a valid, empty buffer. -typedef struct wuffs_base__io_buffer__struct { - wuffs_base__slice_u8 data; - wuffs_base__io_buffer_meta meta; - -#ifdef __cplusplus - inline bool is_valid() const; - inline void compact(); - inline size_t reader_length() const; - inline uint8_t* reader_pointer() const; - inline uint64_t reader_position() const; - inline wuffs_base__slice_u8 reader_slice() const; - inline size_t writer_length() const; - inline uint8_t* writer_pointer() const; - inline uint64_t writer_position() const; - inline wuffs_base__slice_u8 writer_slice() const; -#endif // __cplusplus - -} wuffs_base__io_buffer; - -static inline wuffs_base__io_buffer // -wuffs_base__make_io_buffer(wuffs_base__slice_u8 data, - wuffs_base__io_buffer_meta meta) { - wuffs_base__io_buffer ret; - ret.data = data; - ret.meta = meta; - return ret; -} - -static inline wuffs_base__io_buffer_meta // -wuffs_base__make_io_buffer_meta(size_t wi, - size_t ri, - uint64_t pos, - bool closed) { - wuffs_base__io_buffer_meta ret; - ret.wi = wi; - ret.ri = ri; - ret.pos = pos; - ret.closed = closed; - return ret; -} - -static inline wuffs_base__io_buffer // -wuffs_base__ptr_u8__reader(uint8_t* ptr, size_t len, bool closed) { - wuffs_base__io_buffer ret; - ret.data.ptr = ptr; - ret.data.len = len; - ret.meta.wi = len; - ret.meta.ri = 0; - ret.meta.pos = 0; - ret.meta.closed = closed; - return ret; -} - -static inline wuffs_base__io_buffer // -wuffs_base__ptr_u8__writer(uint8_t* ptr, size_t len) { - wuffs_base__io_buffer ret; - ret.data.ptr = ptr; - ret.data.len = len; - ret.meta.wi = 0; - ret.meta.ri = 0; - ret.meta.pos = 0; - ret.meta.closed = false; - return ret; -} - -static inline wuffs_base__io_buffer // -wuffs_base__slice_u8__reader(wuffs_base__slice_u8 s, bool closed) { - wuffs_base__io_buffer ret; - ret.data.ptr = s.ptr; - ret.data.len = s.len; - ret.meta.wi = s.len; - ret.meta.ri = 0; - ret.meta.pos = 0; - ret.meta.closed = closed; - return ret; -} - -static inline wuffs_base__io_buffer // -wuffs_base__slice_u8__writer(wuffs_base__slice_u8 s) { - wuffs_base__io_buffer ret; - ret.data.ptr = s.ptr; - ret.data.len = s.len; - ret.meta.wi = 0; - ret.meta.ri = 0; - ret.meta.pos = 0; - ret.meta.closed = false; - return ret; -} - -static inline wuffs_base__io_buffer // -wuffs_base__empty_io_buffer() { - wuffs_base__io_buffer ret; - ret.data.ptr = NULL; - ret.data.len = 0; - ret.meta.wi = 0; - ret.meta.ri = 0; - ret.meta.pos = 0; - ret.meta.closed = false; - return ret; -} - -static inline wuffs_base__io_buffer_meta // -wuffs_base__empty_io_buffer_meta() { - wuffs_base__io_buffer_meta ret; - ret.wi = 0; - ret.ri = 0; - ret.pos = 0; - ret.closed = false; - return ret; -} - -static inline bool // -wuffs_base__io_buffer__is_valid(const wuffs_base__io_buffer* buf) { - if (buf) { - if (buf->data.ptr) { - return (buf->meta.ri <= buf->meta.wi) && (buf->meta.wi <= buf->data.len); - } else { - return (buf->meta.ri == 0) && (buf->meta.wi == 0) && (buf->data.len == 0); - } - } - return false; -} - -// wuffs_base__io_buffer__compact moves any written but unread bytes to the -// start of the buffer. -static inline void // -wuffs_base__io_buffer__compact(wuffs_base__io_buffer* buf) { - if (!buf || (buf->meta.ri == 0)) { - return; - } - buf->meta.pos = wuffs_base__u64__sat_add(buf->meta.pos, buf->meta.ri); - size_t n = buf->meta.wi - buf->meta.ri; - if (n != 0) { - memmove(buf->data.ptr, buf->data.ptr + buf->meta.ri, n); - } - buf->meta.wi = n; - buf->meta.ri = 0; -} - -static inline size_t // -wuffs_base__io_buffer__reader_length(const wuffs_base__io_buffer* buf) { - return buf ? buf->meta.wi - buf->meta.ri : 0; -} - -static inline uint8_t* // -wuffs_base__io_buffer__reader_pointer(const wuffs_base__io_buffer* buf) { - return buf ? (buf->data.ptr + buf->meta.ri) : NULL; -} - -static inline uint64_t // -wuffs_base__io_buffer__reader_position(const wuffs_base__io_buffer* buf) { - return buf ? wuffs_base__u64__sat_add(buf->meta.pos, buf->meta.ri) : 0; -} - -static inline wuffs_base__slice_u8 // -wuffs_base__io_buffer__reader_slice(const wuffs_base__io_buffer* buf) { - return buf ? wuffs_base__make_slice_u8(buf->data.ptr + buf->meta.ri, - buf->meta.wi - buf->meta.ri) - : wuffs_base__empty_slice_u8(); -} - -static inline size_t // -wuffs_base__io_buffer__writer_length(const wuffs_base__io_buffer* buf) { - return buf ? buf->data.len - buf->meta.wi : 0; -} - -static inline uint8_t* // -wuffs_base__io_buffer__writer_pointer(const wuffs_base__io_buffer* buf) { - return buf ? (buf->data.ptr + buf->meta.wi) : NULL; -} - -static inline uint64_t // -wuffs_base__io_buffer__writer_position(const wuffs_base__io_buffer* buf) { - return buf ? wuffs_base__u64__sat_add(buf->meta.pos, buf->meta.wi) : 0; -} - -static inline wuffs_base__slice_u8 // -wuffs_base__io_buffer__writer_slice(const wuffs_base__io_buffer* buf) { - return buf ? wuffs_base__make_slice_u8(buf->data.ptr + buf->meta.wi, - buf->data.len - buf->meta.wi) - : wuffs_base__empty_slice_u8(); -} - -#ifdef __cplusplus - -inline bool // -wuffs_base__io_buffer::is_valid() const { - return wuffs_base__io_buffer__is_valid(this); -} - -inline void // -wuffs_base__io_buffer::compact() { - wuffs_base__io_buffer__compact(this); -} - -inline size_t // -wuffs_base__io_buffer::reader_length() const { - return wuffs_base__io_buffer__reader_length(this); -} - -inline uint8_t* // -wuffs_base__io_buffer::reader_pointer() const { - return wuffs_base__io_buffer__reader_pointer(this); -} - -inline uint64_t // -wuffs_base__io_buffer::reader_position() const { - return wuffs_base__io_buffer__reader_position(this); -} - -inline wuffs_base__slice_u8 // -wuffs_base__io_buffer::reader_slice() const { - return wuffs_base__io_buffer__reader_slice(this); -} - -inline size_t // -wuffs_base__io_buffer::writer_length() const { - return wuffs_base__io_buffer__writer_length(this); -} - -inline uint8_t* // -wuffs_base__io_buffer::writer_pointer() const { - return wuffs_base__io_buffer__writer_pointer(this); -} - -inline uint64_t // -wuffs_base__io_buffer::writer_position() const { - return wuffs_base__io_buffer__writer_position(this); -} - -inline wuffs_base__slice_u8 // -wuffs_base__io_buffer::writer_slice() const { - return wuffs_base__io_buffer__writer_slice(this); -} - -#endif // __cplusplus - -// ---------------- Tokens - -// wuffs_base__token is an element of a byte stream's tokenization. -// -// See https://github.com/google/wuffs/blob/main/doc/note/tokens.md -typedef struct wuffs_base__token__struct { - uint64_t repr; - -#ifdef __cplusplus - inline int64_t value() const; - inline int64_t value_extension() const; - inline int64_t value_major() const; - inline int64_t value_base_category() const; - inline uint64_t value_minor() const; - inline uint64_t value_base_detail() const; - inline int64_t value_base_detail__sign_extended() const; - inline bool continued() const; - inline uint64_t length() const; -#endif // __cplusplus - -} wuffs_base__token; - -static inline wuffs_base__token // -wuffs_base__make_token(uint64_t repr) { - wuffs_base__token ret; - ret.repr = repr; - return ret; -} - -// -------- - -#define WUFFS_BASE__TOKEN__LENGTH__MAX_INCL 0xFFFF - -#define WUFFS_BASE__TOKEN__VALUE__SHIFT 17 -#define WUFFS_BASE__TOKEN__VALUE_EXTENSION__SHIFT 17 -#define WUFFS_BASE__TOKEN__VALUE_MAJOR__SHIFT 42 -#define WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT 17 -#define WUFFS_BASE__TOKEN__VALUE_BASE_CATEGORY__SHIFT 38 -#define WUFFS_BASE__TOKEN__VALUE_BASE_DETAIL__SHIFT 17 -#define WUFFS_BASE__TOKEN__CONTINUED__SHIFT 16 -#define WUFFS_BASE__TOKEN__LENGTH__SHIFT 0 - -#define WUFFS_BASE__TOKEN__VALUE_EXTENSION__NUM_BITS 46 - -// -------- - -#define WUFFS_BASE__TOKEN__VBC__FILLER 0 -#define WUFFS_BASE__TOKEN__VBC__STRUCTURE 1 -#define WUFFS_BASE__TOKEN__VBC__STRING 2 -#define WUFFS_BASE__TOKEN__VBC__UNICODE_CODE_POINT 3 -#define WUFFS_BASE__TOKEN__VBC__LITERAL 4 -#define WUFFS_BASE__TOKEN__VBC__NUMBER 5 -#define WUFFS_BASE__TOKEN__VBC__INLINE_INTEGER_SIGNED 6 -#define WUFFS_BASE__TOKEN__VBC__INLINE_INTEGER_UNSIGNED 7 - -// -------- - -#define WUFFS_BASE__TOKEN__VBD__FILLER__PUNCTUATION 0x00001 -#define WUFFS_BASE__TOKEN__VBD__FILLER__COMMENT_BLOCK 0x00002 -#define WUFFS_BASE__TOKEN__VBD__FILLER__COMMENT_LINE 0x00004 - -// COMMENT_ANY is a bit-wise or of COMMENT_BLOCK AND COMMENT_LINE. -#define WUFFS_BASE__TOKEN__VBD__FILLER__COMMENT_ANY 0x00006 - -// -------- - -#define WUFFS_BASE__TOKEN__VBD__STRUCTURE__PUSH 0x00001 -#define WUFFS_BASE__TOKEN__VBD__STRUCTURE__POP 0x00002 -#define WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_NONE 0x00010 -#define WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_LIST 0x00020 -#define WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_DICT 0x00040 -#define WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_NONE 0x01000 -#define WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_LIST 0x02000 -#define WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_DICT 0x04000 - -// -------- - -// DEFINITELY_FOO means that the destination bytes (and also the source bytes, -// for 1_DST_1_SRC_COPY) are in the FOO format. Definitely means that the lack -// of the bit means "maybe FOO". It does not necessarily mean "not FOO". -// -// CHAIN_ETC means that decoding the entire token chain forms a UTF-8 or ASCII -// string, not just this current token. CHAIN_ETC_UTF_8 therefore distinguishes -// Unicode (UTF-8) strings from byte strings. MUST means that the the token -// producer (e.g. parser) must verify this. SHOULD means that the token -// consumer (e.g. renderer) should verify this. -// -// When a CHAIN_ETC_UTF_8 bit is set, the parser must ensure that non-ASCII -// code points (with multi-byte UTF-8 encodings) do not straddle token -// boundaries. Checking UTF-8 validity can inspect each token separately. -// -// The lack of any particular bit is conservative: it is valid for all-ASCII -// strings, in a single- or multi-token chain, to have none of these bits set. -#define WUFFS_BASE__TOKEN__VBD__STRING__DEFINITELY_UTF_8 0x00001 -#define WUFFS_BASE__TOKEN__VBD__STRING__CHAIN_MUST_BE_UTF_8 0x00002 -#define WUFFS_BASE__TOKEN__VBD__STRING__CHAIN_SHOULD_BE_UTF_8 0x00004 -#define WUFFS_BASE__TOKEN__VBD__STRING__DEFINITELY_ASCII 0x00010 -#define WUFFS_BASE__TOKEN__VBD__STRING__CHAIN_MUST_BE_ASCII 0x00020 -#define WUFFS_BASE__TOKEN__VBD__STRING__CHAIN_SHOULD_BE_ASCII 0x00040 - -// CONVERT_D_DST_S_SRC means that multiples of S source bytes (possibly padded) -// produces multiples of D destination bytes. For example, -// CONVERT_1_DST_4_SRC_BACKSLASH_X means a source like "\\x23\\x67\\xAB", where -// 12 src bytes encode 3 dst bytes. -// -// Post-processing may further transform those D destination bytes (e.g. treat -// "\\xFF" as the Unicode code point U+00FF instead of the byte 0xFF), but that -// is out of scope of this VBD's semantics. -// -// When src is the empty string, multiple conversion algorithms are applicable -// (so these bits are not necessarily mutually exclusive), all producing the -// same empty dst string. -#define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_0_DST_1_SRC_DROP 0x00100 -#define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_1_DST_1_SRC_COPY 0x00200 -#define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_1_DST_2_SRC_HEXADECIMAL 0x00400 -#define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_1_DST_4_SRC_BACKSLASH_X 0x00800 -#define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_3_DST_4_SRC_BASE_64_STD 0x01000 -#define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_3_DST_4_SRC_BASE_64_URL 0x02000 -#define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_4_DST_5_SRC_ASCII_85 0x04000 -#define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_5_DST_8_SRC_BASE_32_HEX 0x08000 -#define WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_5_DST_8_SRC_BASE_32_STD 0x10000 - -// -------- - -#define WUFFS_BASE__TOKEN__VBD__LITERAL__UNDEFINED 0x00001 -#define WUFFS_BASE__TOKEN__VBD__LITERAL__NULL 0x00002 -#define WUFFS_BASE__TOKEN__VBD__LITERAL__FALSE 0x00004 -#define WUFFS_BASE__TOKEN__VBD__LITERAL__TRUE 0x00008 - -// -------- - -// For a source string of "123" or "0x9A", it is valid for a tokenizer to -// return any combination of: -// - WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_FLOATING_POINT. -// - WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_INTEGER_SIGNED. -// - WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_INTEGER_UNSIGNED. -// -// For a source string of "+123" or "-0x9A", only the first two are valid. -// -// For a source string of "123.", only the first one is valid. -#define WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_FLOATING_POINT 0x00001 -#define WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_INTEGER_SIGNED 0x00002 -#define WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_INTEGER_UNSIGNED 0x00004 - -#define WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_NEG_INF 0x00010 -#define WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_POS_INF 0x00020 -#define WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_NEG_NAN 0x00040 -#define WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_POS_NAN 0x00080 - -// The number 300 might be represented as "\x01\x2C", "\x2C\x01\x00\x00" or -// "300", which are big-endian, little-endian or text. For binary formats, the -// token length (after adjusting for FORMAT_IGNORE_ETC) discriminates -// e.g. u16 little-endian vs u32 little-endian. -#define WUFFS_BASE__TOKEN__VBD__NUMBER__FORMAT_BINARY_BIG_ENDIAN 0x00100 -#define WUFFS_BASE__TOKEN__VBD__NUMBER__FORMAT_BINARY_LITTLE_ENDIAN 0x00200 -#define WUFFS_BASE__TOKEN__VBD__NUMBER__FORMAT_TEXT 0x00400 - -#define WUFFS_BASE__TOKEN__VBD__NUMBER__FORMAT_IGNORE_FIRST_BYTE 0x01000 - -// -------- - -// wuffs_base__token__value returns the token's high 46 bits, sign-extended. A -// negative value means an extended token, non-negative means a simple token. -static inline int64_t // -wuffs_base__token__value(const wuffs_base__token* t) { - return ((int64_t)(t->repr)) >> WUFFS_BASE__TOKEN__VALUE__SHIFT; -} - -// wuffs_base__token__value_extension returns a negative value if the token was -// not an extended token. -static inline int64_t // -wuffs_base__token__value_extension(const wuffs_base__token* t) { - return (~(int64_t)(t->repr)) >> WUFFS_BASE__TOKEN__VALUE_EXTENSION__SHIFT; -} - -// wuffs_base__token__value_major returns a negative value if the token was not -// a simple token. -static inline int64_t // -wuffs_base__token__value_major(const wuffs_base__token* t) { - return ((int64_t)(t->repr)) >> WUFFS_BASE__TOKEN__VALUE_MAJOR__SHIFT; -} - -// wuffs_base__token__value_base_category returns a negative value if the token -// was not a simple token. -static inline int64_t // -wuffs_base__token__value_base_category(const wuffs_base__token* t) { - return ((int64_t)(t->repr)) >> WUFFS_BASE__TOKEN__VALUE_BASE_CATEGORY__SHIFT; -} - -static inline uint64_t // -wuffs_base__token__value_minor(const wuffs_base__token* t) { - return (t->repr >> WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) & 0x1FFFFFF; -} - -static inline uint64_t // -wuffs_base__token__value_base_detail(const wuffs_base__token* t) { - return (t->repr >> WUFFS_BASE__TOKEN__VALUE_BASE_DETAIL__SHIFT) & 0x1FFFFF; -} - -static inline int64_t // -wuffs_base__token__value_base_detail__sign_extended( - const wuffs_base__token* t) { - // The VBD is 21 bits in the middle of t->repr. Left shift the high (64 - 21 - // - ETC__SHIFT) bits off, then right shift (sign-extending) back down. - uint64_t u = t->repr << (43 - WUFFS_BASE__TOKEN__VALUE_BASE_DETAIL__SHIFT); - return ((int64_t)u) >> 43; -} - -static inline bool // -wuffs_base__token__continued(const wuffs_base__token* t) { - return t->repr & 0x10000; -} - -static inline uint64_t // -wuffs_base__token__length(const wuffs_base__token* t) { - return (t->repr >> WUFFS_BASE__TOKEN__LENGTH__SHIFT) & 0xFFFF; -} - -#ifdef __cplusplus - -inline int64_t // -wuffs_base__token::value() const { - return wuffs_base__token__value(this); -} - -inline int64_t // -wuffs_base__token::value_extension() const { - return wuffs_base__token__value_extension(this); -} - -inline int64_t // -wuffs_base__token::value_major() const { - return wuffs_base__token__value_major(this); -} - -inline int64_t // -wuffs_base__token::value_base_category() const { - return wuffs_base__token__value_base_category(this); -} - -inline uint64_t // -wuffs_base__token::value_minor() const { - return wuffs_base__token__value_minor(this); -} - -inline uint64_t // -wuffs_base__token::value_base_detail() const { - return wuffs_base__token__value_base_detail(this); -} - -inline int64_t // -wuffs_base__token::value_base_detail__sign_extended() const { - return wuffs_base__token__value_base_detail__sign_extended(this); -} - -inline bool // -wuffs_base__token::continued() const { - return wuffs_base__token__continued(this); -} - -inline uint64_t // -wuffs_base__token::length() const { - return wuffs_base__token__length(this); -} - -#endif // __cplusplus - -// -------- - -typedef WUFFS_BASE__SLICE(wuffs_base__token) wuffs_base__slice_token; - -static inline wuffs_base__slice_token // -wuffs_base__make_slice_token(wuffs_base__token* ptr, size_t len) { - wuffs_base__slice_token ret; - ret.ptr = ptr; - ret.len = len; - return ret; -} - -static inline wuffs_base__slice_token // -wuffs_base__empty_slice_token() { - wuffs_base__slice_token ret; - ret.ptr = NULL; - ret.len = 0; - return ret; -} - -// -------- - -// wuffs_base__token_buffer_meta is the metadata for a -// wuffs_base__token_buffer's data. -typedef struct wuffs_base__token_buffer_meta__struct { - size_t wi; // Write index. Invariant: wi <= len. - size_t ri; // Read index. Invariant: ri <= wi. - uint64_t pos; // Position of the buffer start relative to the stream start. - bool closed; // No further writes are expected. -} wuffs_base__token_buffer_meta; - -// wuffs_base__token_buffer is a 1-dimensional buffer (a pointer and length) -// plus additional metadata. -// -// A value with all fields zero is a valid, empty buffer. -typedef struct wuffs_base__token_buffer__struct { - wuffs_base__slice_token data; - wuffs_base__token_buffer_meta meta; - -#ifdef __cplusplus - inline bool is_valid() const; - inline void compact(); - inline uint64_t reader_length() const; - inline wuffs_base__token* reader_pointer() const; - inline wuffs_base__slice_token reader_slice() const; - inline uint64_t reader_token_position() const; - inline uint64_t writer_length() const; - inline uint64_t writer_token_position() const; - inline wuffs_base__token* writer_pointer() const; - inline wuffs_base__slice_token writer_slice() const; -#endif // __cplusplus - -} wuffs_base__token_buffer; - -static inline wuffs_base__token_buffer // -wuffs_base__make_token_buffer(wuffs_base__slice_token data, - wuffs_base__token_buffer_meta meta) { - wuffs_base__token_buffer ret; - ret.data = data; - ret.meta = meta; - return ret; -} - -static inline wuffs_base__token_buffer_meta // -wuffs_base__make_token_buffer_meta(size_t wi, - size_t ri, - uint64_t pos, - bool closed) { - wuffs_base__token_buffer_meta ret; - ret.wi = wi; - ret.ri = ri; - ret.pos = pos; - ret.closed = closed; - return ret; -} - -static inline wuffs_base__token_buffer // -wuffs_base__slice_token__reader(wuffs_base__slice_token s, bool closed) { - wuffs_base__token_buffer ret; - ret.data.ptr = s.ptr; - ret.data.len = s.len; - ret.meta.wi = s.len; - ret.meta.ri = 0; - ret.meta.pos = 0; - ret.meta.closed = closed; - return ret; -} - -static inline wuffs_base__token_buffer // -wuffs_base__slice_token__writer(wuffs_base__slice_token s) { - wuffs_base__token_buffer ret; - ret.data.ptr = s.ptr; - ret.data.len = s.len; - ret.meta.wi = 0; - ret.meta.ri = 0; - ret.meta.pos = 0; - ret.meta.closed = false; - return ret; -} - -static inline wuffs_base__token_buffer // -wuffs_base__empty_token_buffer() { - wuffs_base__token_buffer ret; - ret.data.ptr = NULL; - ret.data.len = 0; - ret.meta.wi = 0; - ret.meta.ri = 0; - ret.meta.pos = 0; - ret.meta.closed = false; - return ret; -} - -static inline wuffs_base__token_buffer_meta // -wuffs_base__empty_token_buffer_meta() { - wuffs_base__token_buffer_meta ret; - ret.wi = 0; - ret.ri = 0; - ret.pos = 0; - ret.closed = false; - return ret; -} - -static inline bool // -wuffs_base__token_buffer__is_valid(const wuffs_base__token_buffer* buf) { - if (buf) { - if (buf->data.ptr) { - return (buf->meta.ri <= buf->meta.wi) && (buf->meta.wi <= buf->data.len); - } else { - return (buf->meta.ri == 0) && (buf->meta.wi == 0) && (buf->data.len == 0); - } - } - return false; -} - -// wuffs_base__token_buffer__compact moves any written but unread tokens to the -// start of the buffer. -static inline void // -wuffs_base__token_buffer__compact(wuffs_base__token_buffer* buf) { - if (!buf || (buf->meta.ri == 0)) { - return; - } - buf->meta.pos = wuffs_base__u64__sat_add(buf->meta.pos, buf->meta.ri); - size_t n = buf->meta.wi - buf->meta.ri; - if (n != 0) { - memmove(buf->data.ptr, buf->data.ptr + buf->meta.ri, - n * sizeof(wuffs_base__token)); - } - buf->meta.wi = n; - buf->meta.ri = 0; -} - -static inline uint64_t // -wuffs_base__token_buffer__reader_length(const wuffs_base__token_buffer* buf) { - return buf ? buf->meta.wi - buf->meta.ri : 0; -} - -static inline wuffs_base__token* // -wuffs_base__token_buffer__reader_pointer(const wuffs_base__token_buffer* buf) { - return buf ? (buf->data.ptr + buf->meta.ri) : NULL; -} - -static inline wuffs_base__slice_token // -wuffs_base__token_buffer__reader_slice(const wuffs_base__token_buffer* buf) { - return buf ? wuffs_base__make_slice_token(buf->data.ptr + buf->meta.ri, - buf->meta.wi - buf->meta.ri) - : wuffs_base__empty_slice_token(); -} - -static inline uint64_t // -wuffs_base__token_buffer__reader_token_position( - const wuffs_base__token_buffer* buf) { - return buf ? wuffs_base__u64__sat_add(buf->meta.pos, buf->meta.ri) : 0; -} - -static inline uint64_t // -wuffs_base__token_buffer__writer_length(const wuffs_base__token_buffer* buf) { - return buf ? buf->data.len - buf->meta.wi : 0; -} - -static inline wuffs_base__token* // -wuffs_base__token_buffer__writer_pointer(const wuffs_base__token_buffer* buf) { - return buf ? (buf->data.ptr + buf->meta.wi) : NULL; -} - -static inline wuffs_base__slice_token // -wuffs_base__token_buffer__writer_slice(const wuffs_base__token_buffer* buf) { - return buf ? wuffs_base__make_slice_token(buf->data.ptr + buf->meta.wi, - buf->data.len - buf->meta.wi) - : wuffs_base__empty_slice_token(); -} - -static inline uint64_t // -wuffs_base__token_buffer__writer_token_position( - const wuffs_base__token_buffer* buf) { - return buf ? wuffs_base__u64__sat_add(buf->meta.pos, buf->meta.wi) : 0; -} - -#ifdef __cplusplus - -inline bool // -wuffs_base__token_buffer::is_valid() const { - return wuffs_base__token_buffer__is_valid(this); -} - -inline void // -wuffs_base__token_buffer::compact() { - wuffs_base__token_buffer__compact(this); -} - -inline uint64_t // -wuffs_base__token_buffer::reader_length() const { - return wuffs_base__token_buffer__reader_length(this); -} - -inline wuffs_base__token* // -wuffs_base__token_buffer::reader_pointer() const { - return wuffs_base__token_buffer__reader_pointer(this); -} - -inline wuffs_base__slice_token // -wuffs_base__token_buffer::reader_slice() const { - return wuffs_base__token_buffer__reader_slice(this); -} - -inline uint64_t // -wuffs_base__token_buffer::reader_token_position() const { - return wuffs_base__token_buffer__reader_token_position(this); -} - -inline uint64_t // -wuffs_base__token_buffer::writer_length() const { - return wuffs_base__token_buffer__writer_length(this); -} - -inline wuffs_base__token* // -wuffs_base__token_buffer::writer_pointer() const { - return wuffs_base__token_buffer__writer_pointer(this); -} - -inline wuffs_base__slice_token // -wuffs_base__token_buffer::writer_slice() const { - return wuffs_base__token_buffer__writer_slice(this); -} - -inline uint64_t // -wuffs_base__token_buffer::writer_token_position() const { - return wuffs_base__token_buffer__writer_token_position(this); -} - -#endif // __cplusplus - -// ---------------- Memory Allocation - -// The memory allocation related functions in this section aren't used by Wuffs -// per se, but they may be helpful to the code that uses Wuffs. - -// wuffs_base__malloc_slice_uxx wraps calling a malloc-like function, except -// that it takes a uint64_t number of elements instead of a size_t size in -// bytes, and it returns a slice (a pointer and a length) instead of just a -// pointer. -// -// You can pass the C stdlib's malloc as the malloc_func. -// -// It returns an empty slice (containing a NULL ptr field) if (num_uxx * -// sizeof(uintxx_t)) would overflow SIZE_MAX. - -static inline wuffs_base__slice_u8 // -wuffs_base__malloc_slice_u8(void* (*malloc_func)(size_t), uint64_t num_u8) { - if (malloc_func && (num_u8 <= (SIZE_MAX / sizeof(uint8_t)))) { - void* p = (*malloc_func)((size_t)(num_u8 * sizeof(uint8_t))); - if (p) { - return wuffs_base__make_slice_u8((uint8_t*)(p), (size_t)num_u8); - } - } - return wuffs_base__make_slice_u8(NULL, 0); -} - -static inline wuffs_base__slice_u16 // -wuffs_base__malloc_slice_u16(void* (*malloc_func)(size_t), uint64_t num_u16) { - if (malloc_func && (num_u16 <= (SIZE_MAX / sizeof(uint16_t)))) { - void* p = (*malloc_func)((size_t)(num_u16 * sizeof(uint16_t))); - if (p) { - return wuffs_base__make_slice_u16((uint16_t*)(p), (size_t)num_u16); - } - } - return wuffs_base__make_slice_u16(NULL, 0); -} - -static inline wuffs_base__slice_u32 // -wuffs_base__malloc_slice_u32(void* (*malloc_func)(size_t), uint64_t num_u32) { - if (malloc_func && (num_u32 <= (SIZE_MAX / sizeof(uint32_t)))) { - void* p = (*malloc_func)((size_t)(num_u32 * sizeof(uint32_t))); - if (p) { - return wuffs_base__make_slice_u32((uint32_t*)(p), (size_t)num_u32); - } - } - return wuffs_base__make_slice_u32(NULL, 0); -} - -static inline wuffs_base__slice_u64 // -wuffs_base__malloc_slice_u64(void* (*malloc_func)(size_t), uint64_t num_u64) { - if (malloc_func && (num_u64 <= (SIZE_MAX / sizeof(uint64_t)))) { - void* p = (*malloc_func)((size_t)(num_u64 * sizeof(uint64_t))); - if (p) { - return wuffs_base__make_slice_u64((uint64_t*)(p), (size_t)num_u64); - } - } - return wuffs_base__make_slice_u64(NULL, 0); -} - -// ---------------- Images - -#define WUFFS_BASE__IMAGE__DIMENSION_MAX_INCL 0xFFFFFF - -// wuffs_base__color_u32_argb_premul is an 8 bit per channel premultiplied -// Alpha, Red, Green, Blue color, as a uint32_t value. Its value is always -// 0xAARRGGBB (Alpha most significant, Blue least), regardless of endianness. -typedef uint32_t wuffs_base__color_u32_argb_premul; - -// wuffs_base__color_u32_argb_premul__is_valid returns whether c's Red, Green -// and Blue channels are all less than or equal to its Alpha channel. c uses -// premultiplied alpha, so 50% opaque 100% saturated red is 0x7F7F_0000 and a -// value like 0x7F80_0000 is invalid. -static inline bool // -wuffs_base__color_u32_argb_premul__is_valid( - wuffs_base__color_u32_argb_premul c) { - uint32_t a = 0xFF & (c >> 24); - uint32_t r = 0xFF & (c >> 16); - uint32_t g = 0xFF & (c >> 8); - uint32_t b = 0xFF & (c >> 0); - return (a >= r) && (a >= g) && (a >= b); -} - -static inline uint16_t // -wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565( - wuffs_base__color_u32_argb_premul c) { - uint32_t r5 = 0xF800 & (c >> 8); - uint32_t g6 = 0x07E0 & (c >> 5); - uint32_t b5 = 0x001F & (c >> 3); - return (uint16_t)(r5 | g6 | b5); -} - -static inline wuffs_base__color_u32_argb_premul // -wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul(uint16_t rgb_565) { - uint32_t b5 = 0x1F & (rgb_565 >> 0); - uint32_t b = (b5 << 3) | (b5 >> 2); - uint32_t g6 = 0x3F & (rgb_565 >> 5); - uint32_t g = (g6 << 2) | (g6 >> 4); - uint32_t r5 = 0x1F & (rgb_565 >> 11); - uint32_t r = (r5 << 3) | (r5 >> 2); - return 0xFF000000 | (r << 16) | (g << 8) | (b << 0); -} - -static inline uint8_t // -wuffs_base__color_u32_argb_premul__as__color_u8_gray( - wuffs_base__color_u32_argb_premul c) { - // Work in 16-bit color. - uint32_t cr = 0x101 * (0xFF & (c >> 16)); - uint32_t cg = 0x101 * (0xFF & (c >> 8)); - uint32_t cb = 0x101 * (0xFF & (c >> 0)); - - // These coefficients (the fractions 0.299, 0.587 and 0.114) are the same - // as those given by the JFIF specification. - // - // Note that 19595 + 38470 + 7471 equals 65536, also known as (1 << 16). We - // shift by 24, not just by 16, because the return value is 8-bit color, not - // 16-bit color. - uint32_t weighted_average = (19595 * cr) + (38470 * cg) + (7471 * cb) + 32768; - return (uint8_t)(weighted_average >> 24); -} - -static inline uint16_t // -wuffs_base__color_u32_argb_premul__as__color_u16_gray( - wuffs_base__color_u32_argb_premul c) { - // Work in 16-bit color. - uint32_t cr = 0x101 * (0xFF & (c >> 16)); - uint32_t cg = 0x101 * (0xFF & (c >> 8)); - uint32_t cb = 0x101 * (0xFF & (c >> 0)); - - // These coefficients (the fractions 0.299, 0.587 and 0.114) are the same - // as those given by the JFIF specification. - // - // Note that 19595 + 38470 + 7471 equals 65536, also known as (1 << 16). - uint32_t weighted_average = (19595 * cr) + (38470 * cg) + (7471 * cb) + 32768; - return (uint16_t)(weighted_average >> 16); -} - -// wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul converts -// from non-premultiplied alpha to premultiplied alpha. -static inline wuffs_base__color_u32_argb_premul // -wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul( - uint32_t argb_nonpremul) { - // Multiplying by 0x101 (twice, once for alpha and once for color) converts - // from 8-bit to 16-bit color. Shifting right by 8 undoes that. - // - // Working in the higher bit depth can produce slightly different (and - // arguably slightly more accurate) results. For example, given 8-bit blue - // and alpha of 0x80 and 0x81: - // - // - ((0x80 * 0x81 ) / 0xFF ) = 0x40 = 0x40 - // - ((0x8080 * 0x8181) / 0xFFFF) >> 8 = 0x4101 >> 8 = 0x41 - uint32_t a = 0xFF & (argb_nonpremul >> 24); - uint32_t a16 = a * (0x101 * 0x101); - - uint32_t r = 0xFF & (argb_nonpremul >> 16); - r = ((r * a16) / 0xFFFF) >> 8; - uint32_t g = 0xFF & (argb_nonpremul >> 8); - g = ((g * a16) / 0xFFFF) >> 8; - uint32_t b = 0xFF & (argb_nonpremul >> 0); - b = ((b * a16) / 0xFFFF) >> 8; - - return (a << 24) | (r << 16) | (g << 8) | (b << 0); -} - -// wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul converts -// from premultiplied alpha to non-premultiplied alpha. -static inline uint32_t // -wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul( - wuffs_base__color_u32_argb_premul c) { - uint32_t a = 0xFF & (c >> 24); - if (a == 0xFF) { - return c; - } else if (a == 0) { - return 0; - } - uint32_t a16 = a * 0x101; - - uint32_t r = 0xFF & (c >> 16); - r = ((r * (0x101 * 0xFFFF)) / a16) >> 8; - uint32_t g = 0xFF & (c >> 8); - g = ((g * (0x101 * 0xFFFF)) / a16) >> 8; - uint32_t b = 0xFF & (c >> 0); - b = ((b * (0x101 * 0xFFFF)) / a16) >> 8; - - return (a << 24) | (r << 16) | (g << 8) | (b << 0); -} - -// wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul converts -// from 4x16LE non-premultiplied alpha to 4x8 premultiplied alpha. -static inline wuffs_base__color_u32_argb_premul // -wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul( - uint64_t argb_nonpremul) { - uint32_t a16 = ((uint32_t)(0xFFFF & (argb_nonpremul >> 48))); - - uint32_t r16 = ((uint32_t)(0xFFFF & (argb_nonpremul >> 32))); - r16 = (r16 * a16) / 0xFFFF; - uint32_t g16 = ((uint32_t)(0xFFFF & (argb_nonpremul >> 16))); - g16 = (g16 * a16) / 0xFFFF; - uint32_t b16 = ((uint32_t)(0xFFFF & (argb_nonpremul >> 0))); - b16 = (b16 * a16) / 0xFFFF; - - return ((a16 >> 8) << 24) | ((r16 >> 8) << 16) | ((g16 >> 8) << 8) | - ((b16 >> 8) << 0); -} - -// wuffs_base__color_u32_argb_premul__as__color_u64_argb_nonpremul converts -// from 4x8 premultiplied alpha to 4x16LE non-premultiplied alpha. -static inline uint64_t // -wuffs_base__color_u32_argb_premul__as__color_u64_argb_nonpremul( - wuffs_base__color_u32_argb_premul c) { - uint32_t a = 0xFF & (c >> 24); - if (a == 0xFF) { - uint64_t r16 = 0x101 * (0xFF & (c >> 16)); - uint64_t g16 = 0x101 * (0xFF & (c >> 8)); - uint64_t b16 = 0x101 * (0xFF & (c >> 0)); - return 0xFFFF000000000000u | (r16 << 32) | (g16 << 16) | (b16 << 0); - } else if (a == 0) { - return 0; - } - uint64_t a16 = a * 0x101; - - uint64_t r = 0xFF & (c >> 16); - uint64_t r16 = (r * (0x101 * 0xFFFF)) / a16; - uint64_t g = 0xFF & (c >> 8); - uint64_t g16 = (g * (0x101 * 0xFFFF)) / a16; - uint64_t b = 0xFF & (c >> 0); - uint64_t b16 = (b * (0x101 * 0xFFFF)) / a16; - - return (a16 << 48) | (r16 << 32) | (g16 << 16) | (b16 << 0); -} - -static inline uint64_t // -wuffs_base__color_u32__as__color_u64(uint32_t c) { - uint64_t a16 = 0x101 * (0xFF & (c >> 24)); - uint64_t r16 = 0x101 * (0xFF & (c >> 16)); - uint64_t g16 = 0x101 * (0xFF & (c >> 8)); - uint64_t b16 = 0x101 * (0xFF & (c >> 0)); - return (a16 << 48) | (r16 << 32) | (g16 << 16) | (b16 << 0); -} - -static inline uint32_t // -wuffs_base__color_u64__as__color_u32(uint64_t c) { - uint32_t a = ((uint32_t)(0xFF & (c >> 56))); - uint32_t r = ((uint32_t)(0xFF & (c >> 40))); - uint32_t g = ((uint32_t)(0xFF & (c >> 24))); - uint32_t b = ((uint32_t)(0xFF & (c >> 8))); - return (a << 24) | (r << 16) | (g << 8) | (b << 0); -} - -// wuffs_base__color_ycc__as__color_u32 converts from YCbCr to 0xAARRGGBB. The -// alpha bits are always 0xFF. -static inline wuffs_base__color_u32_argb_premul // -wuffs_base__color_ycc__as__color_u32(uint8_t yy, uint8_t cb, uint8_t cr) { - // Work in 16.16 fixed point arithmetic (so that 'one half' is (1 << 15)) and - // bias the chroma values by 0x80. - uint32_t yy32 = (((uint32_t)yy) << 16) | (1 << 15); - uint32_t cb32 = (((uint32_t)cb) - 0x80); - uint32_t cr32 = (((uint32_t)cr) - 0x80); - - // The formulae: - // - // R = Y + 1.40200 * Cr - // G = Y - 0.34414 * Cb - 0.71414 * Cr - // B = Y + 1.77200 * Cb - // - // When scaled by 1<<16: - // - // 0.34414 becomes 0x0581A = 22554. - // 0.71414 becomes 0x0B6D2 = 46802. - // 1.40200 becomes 0x166E9 = 91881. - // 1.77200 becomes 0x1C5A2 = 116130. - // - // Since we're working in 16.16 fixed point arithmetic, masking by 0x00FF0000 - // (possibly followed by a shift) gives the relevant 8 bits per channel. - // - // However, we need to saturate for overflow (above 0x00FFFFFF, but not so - // high that the MSB Most Significant Bit is set) or for underflow (below - // 0x00000000 as int32_t, which means that the MSB is set as uint32_t). In - // both cases, some of the high 8 bits (bits 24 ..= 31) will be set. - // - // "((uint32_t)(((int32_t)x) >> 31))" just replicates x's MSB across all 32 - // bits. Prepending that with "~" inverts those bits. Thus, "~(etc)" is - // either 0xFFFFFFFF (for overflow) or 0x00000000 (for underflow). - uint32_t rr32 = yy32 + (0x166E9 * cr32); - uint32_t gg32 = yy32 - (0x0581A * cb32) - (0x0B6D2 * cr32); - uint32_t bb32 = yy32 + (0x1C5A2 * cb32); - if (rr32 >> 24) { - rr32 = ~((uint32_t)(((int32_t)rr32) >> 31)); - } - if (gg32 >> 24) { - gg32 = ~((uint32_t)(((int32_t)gg32) >> 31)); - } - if (bb32 >> 24) { - bb32 = ~((uint32_t)(((int32_t)bb32) >> 31)); - } - return 0xFF000000 | // - ((0x00FF0000 & rr32) >> 0) | // - ((0x00FF0000 & gg32) >> 8) | // - ((0x00FF0000 & bb32) >> 16); -} - -// -------- - -typedef uint8_t wuffs_base__pixel_blend; - -// wuffs_base__pixel_blend encodes how to blend source and destination pixels, -// accounting for transparency. It encompasses the Porter-Duff compositing -// operators as well as the other blending modes defined by PDF. -// -// TODO: implement the other modes. -#define WUFFS_BASE__PIXEL_BLEND__SRC ((wuffs_base__pixel_blend)0) -#define WUFFS_BASE__PIXEL_BLEND__SRC_OVER ((wuffs_base__pixel_blend)1) - -// -------- - -// wuffs_base__pixel_alpha_transparency is a pixel format's alpha channel -// model. It is a property of the pixel format in general, not of a specific -// pixel. An RGBA pixel format (with alpha) can still have fully opaque pixels. -typedef uint32_t wuffs_base__pixel_alpha_transparency; - -#define WUFFS_BASE__PIXEL_ALPHA_TRANSPARENCY__OPAQUE 0 -#define WUFFS_BASE__PIXEL_ALPHA_TRANSPARENCY__NONPREMULTIPLIED_ALPHA 1 -#define WUFFS_BASE__PIXEL_ALPHA_TRANSPARENCY__PREMULTIPLIED_ALPHA 2 -#define WUFFS_BASE__PIXEL_ALPHA_TRANSPARENCY__BINARY_ALPHA 3 - -// -------- - -// Deprecated: use WUFFS_BASE__PIXEL_FORMAT__NUM_PLANES_MAX_INCL. -#define WUFFS_BASE__PIXEL_FORMAT__NUM_PLANES_MAX 4 - -#define WUFFS_BASE__PIXEL_FORMAT__NUM_PLANES_MAX_INCL 4 - -#define WUFFS_BASE__PIXEL_FORMAT__INDEXED__INDEX_PLANE 0 -#define WUFFS_BASE__PIXEL_FORMAT__INDEXED__COLOR_PLANE 3 - -// A palette is 256 entries × 4 bytes per entry (e.g. BGRA). -#define WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH 1024 - -// wuffs_base__pixel_format encodes the format of the bytes that constitute an -// image frame's pixel data. -// -// See https://github.com/google/wuffs/blob/main/doc/note/pixel-formats.md -// -// Do not manipulate its bits directly; they are private implementation -// details. Use methods such as wuffs_base__pixel_format__num_planes instead. -typedef struct wuffs_base__pixel_format__struct { - uint32_t repr; - -#ifdef __cplusplus - inline bool is_valid() const; - inline uint32_t bits_per_pixel() const; - inline bool is_direct() const; - inline bool is_indexed() const; - inline bool is_interleaved() const; - inline bool is_planar() const; - inline uint32_t num_planes() const; - inline wuffs_base__pixel_alpha_transparency transparency() const; -#endif // __cplusplus - -} wuffs_base__pixel_format; - -static inline wuffs_base__pixel_format // -wuffs_base__make_pixel_format(uint32_t repr) { - wuffs_base__pixel_format f; - f.repr = repr; - return f; -} - -// Common 8-bit-depth pixel formats. This list is not exhaustive; not all valid -// wuffs_base__pixel_format values are present. - -#define WUFFS_BASE__PIXEL_FORMAT__INVALID 0x00000000 - -#define WUFFS_BASE__PIXEL_FORMAT__A 0x02000008 - -#define WUFFS_BASE__PIXEL_FORMAT__Y 0x20000008 -#define WUFFS_BASE__PIXEL_FORMAT__Y_16LE 0x2000000B -#define WUFFS_BASE__PIXEL_FORMAT__Y_16BE 0x2010000B -#define WUFFS_BASE__PIXEL_FORMAT__YA_NONPREMUL 0x21000008 -#define WUFFS_BASE__PIXEL_FORMAT__YA_PREMUL 0x22000008 - -#define WUFFS_BASE__PIXEL_FORMAT__YCBCR 0x40020888 -#define WUFFS_BASE__PIXEL_FORMAT__YCBCRA_NONPREMUL 0x41038888 -#define WUFFS_BASE__PIXEL_FORMAT__YCBCRK 0x50038888 - -#define WUFFS_BASE__PIXEL_FORMAT__YCOCG 0x60020888 -#define WUFFS_BASE__PIXEL_FORMAT__YCOCGA_NONPREMUL 0x61038888 -#define WUFFS_BASE__PIXEL_FORMAT__YCOCGK 0x70038888 - -#define WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL 0x81040008 -#define WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_PREMUL 0x82040008 -#define WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY 0x83040008 - -#define WUFFS_BASE__PIXEL_FORMAT__BGR_565 0x80000565 -#define WUFFS_BASE__PIXEL_FORMAT__BGR 0x80000888 -#define WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL 0x81008888 -#define WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE 0x8100BBBB -#define WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL 0x82008888 -#define WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE 0x8200BBBB -#define WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY 0x83008888 -#define WUFFS_BASE__PIXEL_FORMAT__BGRX 0x90008888 - -#define WUFFS_BASE__PIXEL_FORMAT__RGB 0xA0000888 -#define WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL 0xA1008888 -#define WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL_4X16LE 0xA100BBBB -#define WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL 0xA2008888 -#define WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL_4X16LE 0xA200BBBB -#define WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY 0xA3008888 -#define WUFFS_BASE__PIXEL_FORMAT__RGBX 0xB0008888 - -#define WUFFS_BASE__PIXEL_FORMAT__CMY 0xC0020888 -#define WUFFS_BASE__PIXEL_FORMAT__CMYK 0xD0038888 - -extern const uint32_t wuffs_base__pixel_format__bits_per_channel[16]; - -static inline bool // -wuffs_base__pixel_format__is_valid(const wuffs_base__pixel_format* f) { - return f->repr != 0; -} - -// wuffs_base__pixel_format__bits_per_pixel returns the number of bits per -// pixel for interleaved pixel formats, and returns 0 for planar pixel formats. -static inline uint32_t // -wuffs_base__pixel_format__bits_per_pixel(const wuffs_base__pixel_format* f) { - if (((f->repr >> 16) & 0x03) != 0) { - return 0; - } - return wuffs_base__pixel_format__bits_per_channel[0x0F & (f->repr >> 0)] + - wuffs_base__pixel_format__bits_per_channel[0x0F & (f->repr >> 4)] + - wuffs_base__pixel_format__bits_per_channel[0x0F & (f->repr >> 8)] + - wuffs_base__pixel_format__bits_per_channel[0x0F & (f->repr >> 12)]; -} - -static inline bool // -wuffs_base__pixel_format__is_direct(const wuffs_base__pixel_format* f) { - return ((f->repr >> 18) & 0x01) == 0; -} - -static inline bool // -wuffs_base__pixel_format__is_indexed(const wuffs_base__pixel_format* f) { - return ((f->repr >> 18) & 0x01) != 0; -} - -static inline bool // -wuffs_base__pixel_format__is_interleaved(const wuffs_base__pixel_format* f) { - return ((f->repr >> 16) & 0x03) == 0; -} - -static inline bool // -wuffs_base__pixel_format__is_planar(const wuffs_base__pixel_format* f) { - return ((f->repr >> 16) & 0x03) != 0; -} - -static inline uint32_t // -wuffs_base__pixel_format__num_planes(const wuffs_base__pixel_format* f) { - return ((f->repr >> 16) & 0x03) + 1; -} - -static inline wuffs_base__pixel_alpha_transparency // -wuffs_base__pixel_format__transparency(const wuffs_base__pixel_format* f) { - return (wuffs_base__pixel_alpha_transparency)((f->repr >> 24) & 0x03); -} - -#ifdef __cplusplus - -inline bool // -wuffs_base__pixel_format::is_valid() const { - return wuffs_base__pixel_format__is_valid(this); -} - -inline uint32_t // -wuffs_base__pixel_format::bits_per_pixel() const { - return wuffs_base__pixel_format__bits_per_pixel(this); -} - -inline bool // -wuffs_base__pixel_format::is_direct() const { - return wuffs_base__pixel_format__is_direct(this); -} - -inline bool // -wuffs_base__pixel_format::is_indexed() const { - return wuffs_base__pixel_format__is_indexed(this); -} - -inline bool // -wuffs_base__pixel_format::is_interleaved() const { - return wuffs_base__pixel_format__is_interleaved(this); -} - -inline bool // -wuffs_base__pixel_format::is_planar() const { - return wuffs_base__pixel_format__is_planar(this); -} - -inline uint32_t // -wuffs_base__pixel_format::num_planes() const { - return wuffs_base__pixel_format__num_planes(this); -} - -inline wuffs_base__pixel_alpha_transparency // -wuffs_base__pixel_format::transparency() const { - return wuffs_base__pixel_format__transparency(this); -} - -#endif // __cplusplus - -// -------- - -// wuffs_base__pixel_subsampling encodes whether sample values cover one pixel -// or cover multiple pixels. -// -// See https://github.com/google/wuffs/blob/main/doc/note/pixel-subsampling.md -// -// Do not manipulate its bits directly; they are private implementation -// details. Use methods such as wuffs_base__pixel_subsampling__bias_x instead. -typedef struct wuffs_base__pixel_subsampling__struct { - uint32_t repr; - -#ifdef __cplusplus - inline uint32_t bias_x(uint32_t plane) const; - inline uint32_t denominator_x(uint32_t plane) const; - inline uint32_t bias_y(uint32_t plane) const; - inline uint32_t denominator_y(uint32_t plane) const; -#endif // __cplusplus - -} wuffs_base__pixel_subsampling; - -static inline wuffs_base__pixel_subsampling // -wuffs_base__make_pixel_subsampling(uint32_t repr) { - wuffs_base__pixel_subsampling s; - s.repr = repr; - return s; -} - -#define WUFFS_BASE__PIXEL_SUBSAMPLING__NONE 0x00000000 - -#define WUFFS_BASE__PIXEL_SUBSAMPLING__444 0x000000 -#define WUFFS_BASE__PIXEL_SUBSAMPLING__440 0x010100 -#define WUFFS_BASE__PIXEL_SUBSAMPLING__422 0x101000 -#define WUFFS_BASE__PIXEL_SUBSAMPLING__420 0x111100 -#define WUFFS_BASE__PIXEL_SUBSAMPLING__411 0x303000 -#define WUFFS_BASE__PIXEL_SUBSAMPLING__410 0x313100 - -static inline uint32_t // -wuffs_base__pixel_subsampling__bias_x(const wuffs_base__pixel_subsampling* s, - uint32_t plane) { - uint32_t shift = ((plane & 0x03) * 8) + 6; - return (s->repr >> shift) & 0x03; -} - -static inline uint32_t // -wuffs_base__pixel_subsampling__denominator_x( - const wuffs_base__pixel_subsampling* s, - uint32_t plane) { - uint32_t shift = ((plane & 0x03) * 8) + 4; - return ((s->repr >> shift) & 0x03) + 1; -} - -static inline uint32_t // -wuffs_base__pixel_subsampling__bias_y(const wuffs_base__pixel_subsampling* s, - uint32_t plane) { - uint32_t shift = ((plane & 0x03) * 8) + 2; - return (s->repr >> shift) & 0x03; -} - -static inline uint32_t // -wuffs_base__pixel_subsampling__denominator_y( - const wuffs_base__pixel_subsampling* s, - uint32_t plane) { - uint32_t shift = ((plane & 0x03) * 8) + 0; - return ((s->repr >> shift) & 0x03) + 1; -} - -#ifdef __cplusplus - -inline uint32_t // -wuffs_base__pixel_subsampling::bias_x(uint32_t plane) const { - return wuffs_base__pixel_subsampling__bias_x(this, plane); -} - -inline uint32_t // -wuffs_base__pixel_subsampling::denominator_x(uint32_t plane) const { - return wuffs_base__pixel_subsampling__denominator_x(this, plane); -} - -inline uint32_t // -wuffs_base__pixel_subsampling::bias_y(uint32_t plane) const { - return wuffs_base__pixel_subsampling__bias_y(this, plane); -} - -inline uint32_t // -wuffs_base__pixel_subsampling::denominator_y(uint32_t plane) const { - return wuffs_base__pixel_subsampling__denominator_y(this, plane); -} - -#endif // __cplusplus - -// -------- - -typedef struct wuffs_base__pixel_config__struct { - // Do not access the private_impl's fields directly. There is no API/ABI - // compatibility or safety guarantee if you do so. - struct { - wuffs_base__pixel_format pixfmt; - wuffs_base__pixel_subsampling pixsub; - uint32_t width; - uint32_t height; - } private_impl; - -#ifdef __cplusplus - inline void set(uint32_t pixfmt_repr, - uint32_t pixsub_repr, - uint32_t width, - uint32_t height); - inline void invalidate(); - inline bool is_valid() const; - inline wuffs_base__pixel_format pixel_format() const; - inline wuffs_base__pixel_subsampling pixel_subsampling() const; - inline wuffs_base__rect_ie_u32 bounds() const; - inline uint32_t width() const; - inline uint32_t height() const; - inline uint64_t pixbuf_len() const; -#endif // __cplusplus - -} wuffs_base__pixel_config; - -static inline wuffs_base__pixel_config // -wuffs_base__null_pixel_config() { - wuffs_base__pixel_config ret; - ret.private_impl.pixfmt.repr = 0; - ret.private_impl.pixsub.repr = 0; - ret.private_impl.width = 0; - ret.private_impl.height = 0; - return ret; -} - -// TODO: Should this function return bool? An error type? -static inline void // -wuffs_base__pixel_config__set(wuffs_base__pixel_config* c, - uint32_t pixfmt_repr, - uint32_t pixsub_repr, - uint32_t width, - uint32_t height) { - if (!c) { - return; - } - if (pixfmt_repr) { - uint64_t wh = ((uint64_t)width) * ((uint64_t)height); - // TODO: handle things other than 1 byte per pixel. - if (wh <= ((uint64_t)SIZE_MAX)) { - c->private_impl.pixfmt.repr = pixfmt_repr; - c->private_impl.pixsub.repr = pixsub_repr; - c->private_impl.width = width; - c->private_impl.height = height; - return; - } - } - - c->private_impl.pixfmt.repr = 0; - c->private_impl.pixsub.repr = 0; - c->private_impl.width = 0; - c->private_impl.height = 0; -} - -static inline void // -wuffs_base__pixel_config__invalidate(wuffs_base__pixel_config* c) { - if (c) { - c->private_impl.pixfmt.repr = 0; - c->private_impl.pixsub.repr = 0; - c->private_impl.width = 0; - c->private_impl.height = 0; - } -} - -static inline bool // -wuffs_base__pixel_config__is_valid(const wuffs_base__pixel_config* c) { - return c && c->private_impl.pixfmt.repr; -} - -static inline wuffs_base__pixel_format // -wuffs_base__pixel_config__pixel_format(const wuffs_base__pixel_config* c) { - return c ? c->private_impl.pixfmt : wuffs_base__make_pixel_format(0); -} - -static inline wuffs_base__pixel_subsampling // -wuffs_base__pixel_config__pixel_subsampling(const wuffs_base__pixel_config* c) { - return c ? c->private_impl.pixsub : wuffs_base__make_pixel_subsampling(0); -} - -static inline wuffs_base__rect_ie_u32 // -wuffs_base__pixel_config__bounds(const wuffs_base__pixel_config* c) { - if (c) { - wuffs_base__rect_ie_u32 ret; - ret.min_incl_x = 0; - ret.min_incl_y = 0; - ret.max_excl_x = c->private_impl.width; - ret.max_excl_y = c->private_impl.height; - return ret; - } - - wuffs_base__rect_ie_u32 ret; - ret.min_incl_x = 0; - ret.min_incl_y = 0; - ret.max_excl_x = 0; - ret.max_excl_y = 0; - return ret; -} - -static inline uint32_t // -wuffs_base__pixel_config__width(const wuffs_base__pixel_config* c) { - return c ? c->private_impl.width : 0; -} - -static inline uint32_t // -wuffs_base__pixel_config__height(const wuffs_base__pixel_config* c) { - return c ? c->private_impl.height : 0; -} - -// TODO: this is the right API for planar (not interleaved) pixbufs? Should it -// allow decoding into a color model different from the format's intrinsic one? -// For example, decoding a JPEG image straight to RGBA instead of to YCbCr? -static inline uint64_t // -wuffs_base__pixel_config__pixbuf_len(const wuffs_base__pixel_config* c) { - if (!c) { - return 0; - } - if (wuffs_base__pixel_format__is_planar(&c->private_impl.pixfmt)) { - // TODO: support planar pixel formats, concious of pixel subsampling. - return 0; - } - uint32_t bits_per_pixel = - wuffs_base__pixel_format__bits_per_pixel(&c->private_impl.pixfmt); - if ((bits_per_pixel == 0) || ((bits_per_pixel % 8) != 0)) { - // TODO: support fraction-of-byte pixels, e.g. 1 bit per pixel? - return 0; - } - uint64_t bytes_per_pixel = bits_per_pixel / 8; - - uint64_t n = - ((uint64_t)c->private_impl.width) * ((uint64_t)c->private_impl.height); - if (n > (UINT64_MAX / bytes_per_pixel)) { - return 0; - } - n *= bytes_per_pixel; - - if (wuffs_base__pixel_format__is_indexed(&c->private_impl.pixfmt)) { - if (n > - (UINT64_MAX - WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH)) { - return 0; - } - n += WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH; - } - - return n; -} - -#ifdef __cplusplus - -inline void // -wuffs_base__pixel_config::set(uint32_t pixfmt_repr, - uint32_t pixsub_repr, - uint32_t width, - uint32_t height) { - wuffs_base__pixel_config__set(this, pixfmt_repr, pixsub_repr, width, height); -} - -inline void // -wuffs_base__pixel_config::invalidate() { - wuffs_base__pixel_config__invalidate(this); -} - -inline bool // -wuffs_base__pixel_config::is_valid() const { - return wuffs_base__pixel_config__is_valid(this); -} - -inline wuffs_base__pixel_format // -wuffs_base__pixel_config::pixel_format() const { - return wuffs_base__pixel_config__pixel_format(this); -} - -inline wuffs_base__pixel_subsampling // -wuffs_base__pixel_config::pixel_subsampling() const { - return wuffs_base__pixel_config__pixel_subsampling(this); -} - -inline wuffs_base__rect_ie_u32 // -wuffs_base__pixel_config::bounds() const { - return wuffs_base__pixel_config__bounds(this); -} - -inline uint32_t // -wuffs_base__pixel_config::width() const { - return wuffs_base__pixel_config__width(this); -} - -inline uint32_t // -wuffs_base__pixel_config::height() const { - return wuffs_base__pixel_config__height(this); -} - -inline uint64_t // -wuffs_base__pixel_config::pixbuf_len() const { - return wuffs_base__pixel_config__pixbuf_len(this); -} - -#endif // __cplusplus - -// -------- - -typedef struct wuffs_base__image_config__struct { - wuffs_base__pixel_config pixcfg; - - // Do not access the private_impl's fields directly. There is no API/ABI - // compatibility or safety guarantee if you do so. - struct { - uint64_t first_frame_io_position; - bool first_frame_is_opaque; - } private_impl; - -#ifdef __cplusplus - inline void set(uint32_t pixfmt_repr, - uint32_t pixsub_repr, - uint32_t width, - uint32_t height, - uint64_t first_frame_io_position, - bool first_frame_is_opaque); - inline void invalidate(); - inline bool is_valid() const; - inline uint64_t first_frame_io_position() const; - inline bool first_frame_is_opaque() const; -#endif // __cplusplus - -} wuffs_base__image_config; - -static inline wuffs_base__image_config // -wuffs_base__null_image_config() { - wuffs_base__image_config ret; - ret.pixcfg = wuffs_base__null_pixel_config(); - ret.private_impl.first_frame_io_position = 0; - ret.private_impl.first_frame_is_opaque = false; - return ret; -} - -// TODO: Should this function return bool? An error type? -static inline void // -wuffs_base__image_config__set(wuffs_base__image_config* c, - uint32_t pixfmt_repr, - uint32_t pixsub_repr, - uint32_t width, - uint32_t height, - uint64_t first_frame_io_position, - bool first_frame_is_opaque) { - if (!c) { - return; - } - if (pixfmt_repr) { - c->pixcfg.private_impl.pixfmt.repr = pixfmt_repr; - c->pixcfg.private_impl.pixsub.repr = pixsub_repr; - c->pixcfg.private_impl.width = width; - c->pixcfg.private_impl.height = height; - c->private_impl.first_frame_io_position = first_frame_io_position; - c->private_impl.first_frame_is_opaque = first_frame_is_opaque; - return; - } - - c->pixcfg.private_impl.pixfmt.repr = 0; - c->pixcfg.private_impl.pixsub.repr = 0; - c->pixcfg.private_impl.width = 0; - c->pixcfg.private_impl.height = 0; - c->private_impl.first_frame_io_position = 0; - c->private_impl.first_frame_is_opaque = 0; -} - -static inline void // -wuffs_base__image_config__invalidate(wuffs_base__image_config* c) { - if (c) { - c->pixcfg.private_impl.pixfmt.repr = 0; - c->pixcfg.private_impl.pixsub.repr = 0; - c->pixcfg.private_impl.width = 0; - c->pixcfg.private_impl.height = 0; - c->private_impl.first_frame_io_position = 0; - c->private_impl.first_frame_is_opaque = 0; - } -} - -static inline bool // -wuffs_base__image_config__is_valid(const wuffs_base__image_config* c) { - return c && wuffs_base__pixel_config__is_valid(&(c->pixcfg)); -} - -static inline uint64_t // -wuffs_base__image_config__first_frame_io_position( - const wuffs_base__image_config* c) { - return c ? c->private_impl.first_frame_io_position : 0; -} - -static inline bool // -wuffs_base__image_config__first_frame_is_opaque( - const wuffs_base__image_config* c) { - return c ? c->private_impl.first_frame_is_opaque : false; -} - -#ifdef __cplusplus - -inline void // -wuffs_base__image_config::set(uint32_t pixfmt_repr, - uint32_t pixsub_repr, - uint32_t width, - uint32_t height, - uint64_t first_frame_io_position, - bool first_frame_is_opaque) { - wuffs_base__image_config__set(this, pixfmt_repr, pixsub_repr, width, height, - first_frame_io_position, first_frame_is_opaque); -} - -inline void // -wuffs_base__image_config::invalidate() { - wuffs_base__image_config__invalidate(this); -} - -inline bool // -wuffs_base__image_config::is_valid() const { - return wuffs_base__image_config__is_valid(this); -} - -inline uint64_t // -wuffs_base__image_config::first_frame_io_position() const { - return wuffs_base__image_config__first_frame_io_position(this); -} - -inline bool // -wuffs_base__image_config::first_frame_is_opaque() const { - return wuffs_base__image_config__first_frame_is_opaque(this); -} - -#endif // __cplusplus - -// -------- - -// wuffs_base__animation_disposal encodes, for an animated image, how to -// dispose of a frame after displaying it: -// - None means to draw the next frame on top of this one. -// - Restore Background means to clear the frame's dirty rectangle to "the -// background color" (in practice, this means transparent black) before -// drawing the next frame. -// - Restore Previous means to undo the current frame, so that the next frame -// is drawn on top of the previous one. -typedef uint8_t wuffs_base__animation_disposal; - -#define WUFFS_BASE__ANIMATION_DISPOSAL__NONE ((wuffs_base__animation_disposal)0) -#define WUFFS_BASE__ANIMATION_DISPOSAL__RESTORE_BACKGROUND \ - ((wuffs_base__animation_disposal)1) -#define WUFFS_BASE__ANIMATION_DISPOSAL__RESTORE_PREVIOUS \ - ((wuffs_base__animation_disposal)2) - -// -------- - -typedef struct wuffs_base__frame_config__struct { - // Do not access the private_impl's fields directly. There is no API/ABI - // compatibility or safety guarantee if you do so. - struct { - wuffs_base__rect_ie_u32 bounds; - wuffs_base__flicks duration; - uint64_t index; - uint64_t io_position; - wuffs_base__animation_disposal disposal; - bool opaque_within_bounds; - bool overwrite_instead_of_blend; - wuffs_base__color_u32_argb_premul background_color; - } private_impl; - -#ifdef __cplusplus - inline void set(wuffs_base__rect_ie_u32 bounds, - wuffs_base__flicks duration, - uint64_t index, - uint64_t io_position, - wuffs_base__animation_disposal disposal, - bool opaque_within_bounds, - bool overwrite_instead_of_blend, - wuffs_base__color_u32_argb_premul background_color); - inline wuffs_base__rect_ie_u32 bounds() const; - inline uint32_t width() const; - inline uint32_t height() const; - inline wuffs_base__flicks duration() const; - inline uint64_t index() const; - inline uint64_t io_position() const; - inline wuffs_base__animation_disposal disposal() const; - inline bool opaque_within_bounds() const; - inline bool overwrite_instead_of_blend() const; - inline wuffs_base__color_u32_argb_premul background_color() const; -#endif // __cplusplus - -} wuffs_base__frame_config; - -static inline wuffs_base__frame_config // -wuffs_base__null_frame_config() { - wuffs_base__frame_config ret; - ret.private_impl.bounds = wuffs_base__make_rect_ie_u32(0, 0, 0, 0); - ret.private_impl.duration = 0; - ret.private_impl.index = 0; - ret.private_impl.io_position = 0; - ret.private_impl.disposal = 0; - ret.private_impl.opaque_within_bounds = false; - ret.private_impl.overwrite_instead_of_blend = false; - return ret; -} - -static inline void // -wuffs_base__frame_config__set( - wuffs_base__frame_config* c, - wuffs_base__rect_ie_u32 bounds, - wuffs_base__flicks duration, - uint64_t index, - uint64_t io_position, - wuffs_base__animation_disposal disposal, - bool opaque_within_bounds, - bool overwrite_instead_of_blend, - wuffs_base__color_u32_argb_premul background_color) { - if (!c) { - return; - } - - c->private_impl.bounds = bounds; - c->private_impl.duration = duration; - c->private_impl.index = index; - c->private_impl.io_position = io_position; - c->private_impl.disposal = disposal; - c->private_impl.opaque_within_bounds = opaque_within_bounds; - c->private_impl.overwrite_instead_of_blend = overwrite_instead_of_blend; - c->private_impl.background_color = background_color; -} - -static inline wuffs_base__rect_ie_u32 // -wuffs_base__frame_config__bounds(const wuffs_base__frame_config* c) { - if (c) { - return c->private_impl.bounds; - } - - wuffs_base__rect_ie_u32 ret; - ret.min_incl_x = 0; - ret.min_incl_y = 0; - ret.max_excl_x = 0; - ret.max_excl_y = 0; - return ret; -} - -static inline uint32_t // -wuffs_base__frame_config__width(const wuffs_base__frame_config* c) { - return c ? wuffs_base__rect_ie_u32__width(&c->private_impl.bounds) : 0; -} - -static inline uint32_t // -wuffs_base__frame_config__height(const wuffs_base__frame_config* c) { - return c ? wuffs_base__rect_ie_u32__height(&c->private_impl.bounds) : 0; -} - -// wuffs_base__frame_config__duration returns the amount of time to display -// this frame. Zero means to display forever - a still (non-animated) image. -static inline wuffs_base__flicks // -wuffs_base__frame_config__duration(const wuffs_base__frame_config* c) { - return c ? c->private_impl.duration : 0; -} - -// wuffs_base__frame_config__index returns the index of this frame. The first -// frame in an image has index 0, the second frame has index 1, and so on. -static inline uint64_t // -wuffs_base__frame_config__index(const wuffs_base__frame_config* c) { - return c ? c->private_impl.index : 0; -} - -// wuffs_base__frame_config__io_position returns the I/O stream position before -// the frame config. -static inline uint64_t // -wuffs_base__frame_config__io_position(const wuffs_base__frame_config* c) { - return c ? c->private_impl.io_position : 0; -} - -// wuffs_base__frame_config__disposal returns, for an animated image, how to -// dispose of this frame after displaying it. -static inline wuffs_base__animation_disposal // -wuffs_base__frame_config__disposal(const wuffs_base__frame_config* c) { - return c ? c->private_impl.disposal : 0; -} - -// wuffs_base__frame_config__opaque_within_bounds returns whether all pixels -// within the frame's bounds are fully opaque. It makes no claim about pixels -// outside the frame bounds but still inside the overall image. The two -// bounding rectangles can differ for animated images. -// -// Its semantics are conservative. It is valid for a fully opaque frame to have -// this value be false: a false negative. -// -// If true, drawing the frame with WUFFS_BASE__PIXEL_BLEND__SRC and -// WUFFS_BASE__PIXEL_BLEND__SRC_OVER should be equivalent, in terms of -// resultant pixels, but the former may be faster. -static inline bool // -wuffs_base__frame_config__opaque_within_bounds( - const wuffs_base__frame_config* c) { - return c && c->private_impl.opaque_within_bounds; -} - -// wuffs_base__frame_config__overwrite_instead_of_blend returns, for an -// animated image, whether to ignore the previous image state (within the frame -// bounds) when drawing this incremental frame. Equivalently, whether to use -// WUFFS_BASE__PIXEL_BLEND__SRC instead of WUFFS_BASE__PIXEL_BLEND__SRC_OVER. -// -// The WebP spec (https://developers.google.com/speed/webp/docs/riff_container) -// calls this the "Blending method" bit. WebP's "Do not blend" corresponds to -// Wuffs' "overwrite_instead_of_blend". -static inline bool // -wuffs_base__frame_config__overwrite_instead_of_blend( - const wuffs_base__frame_config* c) { - return c && c->private_impl.overwrite_instead_of_blend; -} - -static inline wuffs_base__color_u32_argb_premul // -wuffs_base__frame_config__background_color(const wuffs_base__frame_config* c) { - return c ? c->private_impl.background_color : 0; -} - -#ifdef __cplusplus - -inline void // -wuffs_base__frame_config::set( - wuffs_base__rect_ie_u32 bounds, - wuffs_base__flicks duration, - uint64_t index, - uint64_t io_position, - wuffs_base__animation_disposal disposal, - bool opaque_within_bounds, - bool overwrite_instead_of_blend, - wuffs_base__color_u32_argb_premul background_color) { - wuffs_base__frame_config__set(this, bounds, duration, index, io_position, - disposal, opaque_within_bounds, - overwrite_instead_of_blend, background_color); -} - -inline wuffs_base__rect_ie_u32 // -wuffs_base__frame_config::bounds() const { - return wuffs_base__frame_config__bounds(this); -} - -inline uint32_t // -wuffs_base__frame_config::width() const { - return wuffs_base__frame_config__width(this); -} - -inline uint32_t // -wuffs_base__frame_config::height() const { - return wuffs_base__frame_config__height(this); -} - -inline wuffs_base__flicks // -wuffs_base__frame_config::duration() const { - return wuffs_base__frame_config__duration(this); -} - -inline uint64_t // -wuffs_base__frame_config::index() const { - return wuffs_base__frame_config__index(this); -} - -inline uint64_t // -wuffs_base__frame_config::io_position() const { - return wuffs_base__frame_config__io_position(this); -} - -inline wuffs_base__animation_disposal // -wuffs_base__frame_config::disposal() const { - return wuffs_base__frame_config__disposal(this); -} - -inline bool // -wuffs_base__frame_config::opaque_within_bounds() const { - return wuffs_base__frame_config__opaque_within_bounds(this); -} - -inline bool // -wuffs_base__frame_config::overwrite_instead_of_blend() const { - return wuffs_base__frame_config__overwrite_instead_of_blend(this); -} - -inline wuffs_base__color_u32_argb_premul // -wuffs_base__frame_config::background_color() const { - return wuffs_base__frame_config__background_color(this); -} - -#endif // __cplusplus - -// -------- - -typedef struct wuffs_base__pixel_buffer__struct { - wuffs_base__pixel_config pixcfg; - - // Do not access the private_impl's fields directly. There is no API/ABI - // compatibility or safety guarantee if you do so. - struct { - wuffs_base__table_u8 planes[WUFFS_BASE__PIXEL_FORMAT__NUM_PLANES_MAX_INCL]; - // TODO: color spaces. - } private_impl; - -#ifdef __cplusplus - inline wuffs_base__status set_interleaved( - const wuffs_base__pixel_config* pixcfg, - wuffs_base__table_u8 primary_memory, - wuffs_base__slice_u8 palette_memory); - inline wuffs_base__status set_from_slice( - const wuffs_base__pixel_config* pixcfg, - wuffs_base__slice_u8 pixbuf_memory); - inline wuffs_base__slice_u8 palette(); - inline wuffs_base__slice_u8 palette_or_else(wuffs_base__slice_u8 fallback); - inline wuffs_base__pixel_format pixel_format() const; - inline wuffs_base__table_u8 plane(uint32_t p); - inline wuffs_base__color_u32_argb_premul color_u32_at(uint32_t x, - uint32_t y) const; - inline wuffs_base__status set_color_u32_at( - uint32_t x, - uint32_t y, - wuffs_base__color_u32_argb_premul color); - inline wuffs_base__status set_color_u32_fill_rect( - wuffs_base__rect_ie_u32 rect, - wuffs_base__color_u32_argb_premul color); -#endif // __cplusplus - -} wuffs_base__pixel_buffer; - -static inline wuffs_base__pixel_buffer // -wuffs_base__null_pixel_buffer() { - wuffs_base__pixel_buffer ret; - ret.pixcfg = wuffs_base__null_pixel_config(); - ret.private_impl.planes[0] = wuffs_base__empty_table_u8(); - ret.private_impl.planes[1] = wuffs_base__empty_table_u8(); - ret.private_impl.planes[2] = wuffs_base__empty_table_u8(); - ret.private_impl.planes[3] = wuffs_base__empty_table_u8(); - return ret; -} - -static inline wuffs_base__status // -wuffs_base__pixel_buffer__set_interleaved( - wuffs_base__pixel_buffer* pb, - const wuffs_base__pixel_config* pixcfg, - wuffs_base__table_u8 primary_memory, - wuffs_base__slice_u8 palette_memory) { - if (!pb) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - memset(pb, 0, sizeof(*pb)); - if (!pixcfg || - wuffs_base__pixel_format__is_planar(&pixcfg->private_impl.pixfmt)) { - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - if (wuffs_base__pixel_format__is_indexed(&pixcfg->private_impl.pixfmt) && - (palette_memory.len < - WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH)) { - return wuffs_base__make_status( - wuffs_base__error__bad_argument_length_too_short); - } - uint32_t bits_per_pixel = - wuffs_base__pixel_format__bits_per_pixel(&pixcfg->private_impl.pixfmt); - if ((bits_per_pixel == 0) || ((bits_per_pixel % 8) != 0)) { - // TODO: support fraction-of-byte pixels, e.g. 1 bit per pixel? - return wuffs_base__make_status(wuffs_base__error__unsupported_option); - } - uint64_t bytes_per_pixel = bits_per_pixel / 8; - - uint64_t width_in_bytes = - ((uint64_t)pixcfg->private_impl.width) * bytes_per_pixel; - if ((width_in_bytes > primary_memory.width) || - (pixcfg->private_impl.height > primary_memory.height)) { - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - - pb->pixcfg = *pixcfg; - pb->private_impl.planes[0] = primary_memory; - if (wuffs_base__pixel_format__is_indexed(&pixcfg->private_impl.pixfmt)) { - wuffs_base__table_u8* tab = - &pb->private_impl - .planes[WUFFS_BASE__PIXEL_FORMAT__INDEXED__COLOR_PLANE]; - tab->ptr = palette_memory.ptr; - tab->width = WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH; - tab->height = 1; - tab->stride = WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH; - } - return wuffs_base__make_status(NULL); -} - -static inline wuffs_base__status // -wuffs_base__pixel_buffer__set_from_slice(wuffs_base__pixel_buffer* pb, - const wuffs_base__pixel_config* pixcfg, - wuffs_base__slice_u8 pixbuf_memory) { - if (!pb) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - memset(pb, 0, sizeof(*pb)); - if (!pixcfg) { - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - if (wuffs_base__pixel_format__is_planar(&pixcfg->private_impl.pixfmt)) { - // TODO: support planar pixel formats, concious of pixel subsampling. - return wuffs_base__make_status(wuffs_base__error__unsupported_option); - } - uint32_t bits_per_pixel = - wuffs_base__pixel_format__bits_per_pixel(&pixcfg->private_impl.pixfmt); - if ((bits_per_pixel == 0) || ((bits_per_pixel % 8) != 0)) { - // TODO: support fraction-of-byte pixels, e.g. 1 bit per pixel? - return wuffs_base__make_status(wuffs_base__error__unsupported_option); - } - uint64_t bytes_per_pixel = bits_per_pixel / 8; - - uint8_t* ptr = pixbuf_memory.ptr; - uint64_t len = pixbuf_memory.len; - if (wuffs_base__pixel_format__is_indexed(&pixcfg->private_impl.pixfmt)) { - // Split a WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH byte - // chunk (1024 bytes = 256 palette entries × 4 bytes per entry) from the - // start of pixbuf_memory. We split from the start, not the end, so that - // the both chunks' pointers have the same alignment as the original - // pointer, up to an alignment of 1024. - if (len < WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) { - return wuffs_base__make_status( - wuffs_base__error__bad_argument_length_too_short); - } - wuffs_base__table_u8* tab = - &pb->private_impl - .planes[WUFFS_BASE__PIXEL_FORMAT__INDEXED__COLOR_PLANE]; - tab->ptr = ptr; - tab->width = WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH; - tab->height = 1; - tab->stride = WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH; - ptr += WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH; - len -= WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH; - } - - uint64_t wh = ((uint64_t)pixcfg->private_impl.width) * - ((uint64_t)pixcfg->private_impl.height); - size_t width = (size_t)(pixcfg->private_impl.width); - if ((wh > (UINT64_MAX / bytes_per_pixel)) || - (width > (SIZE_MAX / bytes_per_pixel))) { - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - wh *= bytes_per_pixel; - width = ((size_t)(width * bytes_per_pixel)); - if (wh > len) { - return wuffs_base__make_status( - wuffs_base__error__bad_argument_length_too_short); - } - - pb->pixcfg = *pixcfg; - wuffs_base__table_u8* tab = &pb->private_impl.planes[0]; - tab->ptr = ptr; - tab->width = width; - tab->height = pixcfg->private_impl.height; - tab->stride = width; - return wuffs_base__make_status(NULL); -} - -// wuffs_base__pixel_buffer__palette returns the palette color data. If -// non-empty, it will have length -// WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH. -static inline wuffs_base__slice_u8 // -wuffs_base__pixel_buffer__palette(wuffs_base__pixel_buffer* pb) { - if (pb && - wuffs_base__pixel_format__is_indexed(&pb->pixcfg.private_impl.pixfmt)) { - wuffs_base__table_u8* tab = - &pb->private_impl - .planes[WUFFS_BASE__PIXEL_FORMAT__INDEXED__COLOR_PLANE]; - if ((tab->width == - WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) && - (tab->height == 1)) { - return wuffs_base__make_slice_u8( - tab->ptr, WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH); - } - } - return wuffs_base__make_slice_u8(NULL, 0); -} - -static inline wuffs_base__slice_u8 // -wuffs_base__pixel_buffer__palette_or_else(wuffs_base__pixel_buffer* pb, - wuffs_base__slice_u8 fallback) { - if (pb && - wuffs_base__pixel_format__is_indexed(&pb->pixcfg.private_impl.pixfmt)) { - wuffs_base__table_u8* tab = - &pb->private_impl - .planes[WUFFS_BASE__PIXEL_FORMAT__INDEXED__COLOR_PLANE]; - if ((tab->width == - WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) && - (tab->height == 1)) { - return wuffs_base__make_slice_u8( - tab->ptr, WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH); - } - } - return fallback; -} - -static inline wuffs_base__pixel_format // -wuffs_base__pixel_buffer__pixel_format(const wuffs_base__pixel_buffer* pb) { - if (pb) { - return pb->pixcfg.private_impl.pixfmt; - } - return wuffs_base__make_pixel_format(WUFFS_BASE__PIXEL_FORMAT__INVALID); -} - -static inline wuffs_base__table_u8 // -wuffs_base__pixel_buffer__plane(wuffs_base__pixel_buffer* pb, uint32_t p) { - if (pb && (p < WUFFS_BASE__PIXEL_FORMAT__NUM_PLANES_MAX_INCL)) { - return pb->private_impl.planes[p]; - } - - wuffs_base__table_u8 ret; - ret.ptr = NULL; - ret.width = 0; - ret.height = 0; - ret.stride = 0; - return ret; -} - -WUFFS_BASE__MAYBE_STATIC wuffs_base__color_u32_argb_premul // -wuffs_base__pixel_buffer__color_u32_at(const wuffs_base__pixel_buffer* pb, - uint32_t x, - uint32_t y); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status // -wuffs_base__pixel_buffer__set_color_u32_at( - wuffs_base__pixel_buffer* pb, - uint32_t x, - uint32_t y, - wuffs_base__color_u32_argb_premul color); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status // -wuffs_base__pixel_buffer__set_color_u32_fill_rect( - wuffs_base__pixel_buffer* pb, - wuffs_base__rect_ie_u32 rect, - wuffs_base__color_u32_argb_premul color); - -#ifdef __cplusplus - -inline wuffs_base__status // -wuffs_base__pixel_buffer::set_interleaved( - const wuffs_base__pixel_config* pixcfg_arg, - wuffs_base__table_u8 primary_memory, - wuffs_base__slice_u8 palette_memory) { - return wuffs_base__pixel_buffer__set_interleaved( - this, pixcfg_arg, primary_memory, palette_memory); -} - -inline wuffs_base__status // -wuffs_base__pixel_buffer::set_from_slice( - const wuffs_base__pixel_config* pixcfg_arg, - wuffs_base__slice_u8 pixbuf_memory) { - return wuffs_base__pixel_buffer__set_from_slice(this, pixcfg_arg, - pixbuf_memory); -} - -inline wuffs_base__slice_u8 // -wuffs_base__pixel_buffer::palette() { - return wuffs_base__pixel_buffer__palette(this); -} - -inline wuffs_base__slice_u8 // -wuffs_base__pixel_buffer::palette_or_else(wuffs_base__slice_u8 fallback) { - return wuffs_base__pixel_buffer__palette_or_else(this, fallback); -} - -inline wuffs_base__pixel_format // -wuffs_base__pixel_buffer::pixel_format() const { - return wuffs_base__pixel_buffer__pixel_format(this); -} - -inline wuffs_base__table_u8 // -wuffs_base__pixel_buffer::plane(uint32_t p) { - return wuffs_base__pixel_buffer__plane(this, p); -} - -inline wuffs_base__color_u32_argb_premul // -wuffs_base__pixel_buffer::color_u32_at(uint32_t x, uint32_t y) const { - return wuffs_base__pixel_buffer__color_u32_at(this, x, y); -} - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status // -wuffs_base__pixel_buffer__set_color_u32_fill_rect( - wuffs_base__pixel_buffer* pb, - wuffs_base__rect_ie_u32 rect, - wuffs_base__color_u32_argb_premul color); - -inline wuffs_base__status // -wuffs_base__pixel_buffer::set_color_u32_at( - uint32_t x, - uint32_t y, - wuffs_base__color_u32_argb_premul color) { - return wuffs_base__pixel_buffer__set_color_u32_at(this, x, y, color); -} - -inline wuffs_base__status // -wuffs_base__pixel_buffer::set_color_u32_fill_rect( - wuffs_base__rect_ie_u32 rect, - wuffs_base__color_u32_argb_premul color) { - return wuffs_base__pixel_buffer__set_color_u32_fill_rect(this, rect, color); -} - -#endif // __cplusplus - -// -------- - -typedef struct wuffs_base__decode_frame_options__struct { - // Do not access the private_impl's fields directly. There is no API/ABI - // compatibility or safety guarantee if you do so. - struct { - uint8_t TODO; - } private_impl; - -#ifdef __cplusplus -#endif // __cplusplus - -} wuffs_base__decode_frame_options; - -#ifdef __cplusplus - -#endif // __cplusplus - -// -------- - -// wuffs_base__pixel_palette__closest_element returns the index of the palette -// element that minimizes the sum of squared differences of the four ARGB -// channels, working in premultiplied alpha. Ties favor the smaller index. -// -// The palette_slice.len may equal (N*4), for N less than 256, which means that -// only the first N palette elements are considered. It returns 0 when N is 0. -// -// Applying this function on a per-pixel basis will not produce whole-of-image -// dithering. -WUFFS_BASE__MAYBE_STATIC uint8_t // -wuffs_base__pixel_palette__closest_element( - wuffs_base__slice_u8 palette_slice, - wuffs_base__pixel_format palette_format, - wuffs_base__color_u32_argb_premul c); - -// -------- - -// TODO: should the func type take restrict pointers? -typedef uint64_t (*wuffs_base__pixel_swizzler__func)(uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len); - -typedef uint64_t (*wuffs_base__pixel_swizzler__transparent_black_func)( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - uint64_t num_pixels, - uint32_t dst_pixfmt_bytes_per_pixel); - -typedef struct wuffs_base__pixel_swizzler__struct { - // Do not access the private_impl's fields directly. There is no API/ABI - // compatibility or safety guarantee if you do so. - struct { - wuffs_base__pixel_swizzler__func func; - wuffs_base__pixel_swizzler__transparent_black_func transparent_black_func; - uint32_t dst_pixfmt_bytes_per_pixel; - uint32_t src_pixfmt_bytes_per_pixel; - } private_impl; - -#ifdef __cplusplus - inline wuffs_base__status prepare(wuffs_base__pixel_format dst_pixfmt, - wuffs_base__slice_u8 dst_palette, - wuffs_base__pixel_format src_pixfmt, - wuffs_base__slice_u8 src_palette, - wuffs_base__pixel_blend blend); - inline uint64_t swizzle_interleaved_from_slice( - wuffs_base__slice_u8 dst, - wuffs_base__slice_u8 dst_palette, - wuffs_base__slice_u8 src) const; -#endif // __cplusplus - -} wuffs_base__pixel_swizzler; - -// wuffs_base__pixel_swizzler__prepare readies the pixel swizzler so that its -// other methods may be called. -// -// For modular builds that divide the base module into sub-modules, using this -// function requires the WUFFS_CONFIG__MODULE__BASE__PIXCONV sub-module, not -// just WUFFS_CONFIG__MODULE__BASE__CORE. -WUFFS_BASE__MAYBE_STATIC wuffs_base__status // -wuffs_base__pixel_swizzler__prepare(wuffs_base__pixel_swizzler* p, - wuffs_base__pixel_format dst_pixfmt, - wuffs_base__slice_u8 dst_palette, - wuffs_base__pixel_format src_pixfmt, - wuffs_base__slice_u8 src_palette, - wuffs_base__pixel_blend blend); - -// wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice converts pixels -// from a source format to a destination format. -// -// For modular builds that divide the base module into sub-modules, using this -// function requires the WUFFS_CONFIG__MODULE__BASE__PIXCONV sub-module, not -// just WUFFS_CONFIG__MODULE__BASE__CORE. -WUFFS_BASE__MAYBE_STATIC uint64_t // -wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice( - const wuffs_base__pixel_swizzler* p, - wuffs_base__slice_u8 dst, - wuffs_base__slice_u8 dst_palette, - wuffs_base__slice_u8 src); - -#ifdef __cplusplus - -inline wuffs_base__status // -wuffs_base__pixel_swizzler::prepare(wuffs_base__pixel_format dst_pixfmt, - wuffs_base__slice_u8 dst_palette, - wuffs_base__pixel_format src_pixfmt, - wuffs_base__slice_u8 src_palette, - wuffs_base__pixel_blend blend) { - return wuffs_base__pixel_swizzler__prepare(this, dst_pixfmt, dst_palette, - src_pixfmt, src_palette, blend); -} - -uint64_t // -wuffs_base__pixel_swizzler::swizzle_interleaved_from_slice( - wuffs_base__slice_u8 dst, - wuffs_base__slice_u8 dst_palette, - wuffs_base__slice_u8 src) const { - return wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice( - this, dst, dst_palette, src); -} - -#endif // __cplusplus - -// ---------------- String Conversions - -// Options (bitwise or'ed together) for wuffs_base__parse_number_xxx -// functions. The XXX options apply to both integer and floating point. The FXX -// options apply only to floating point. - -#define WUFFS_BASE__PARSE_NUMBER_XXX__DEFAULT_OPTIONS ((uint32_t)0x00000000) - -// WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_MULTIPLE_LEADING_ZEROES means to accept -// inputs like "00", "0644" and "00.7". By default, they are rejected. -#define WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_MULTIPLE_LEADING_ZEROES \ - ((uint32_t)0x00000001) - -// WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES means to accept inputs like -// "1__2" and "_3.141_592". By default, they are rejected. -#define WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES ((uint32_t)0x00000002) - -// WUFFS_BASE__PARSE_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA means to accept -// "1,5" and not "1.5" as one-and-a-half. -// -// If the caller wants to accept either, it is responsible for canonicalizing -// the input before calling wuffs_base__parse_number_fxx. The caller also has -// more context on e.g. exactly how to treat something like "$1,234". -#define WUFFS_BASE__PARSE_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA \ - ((uint32_t)0x00000010) - -// WUFFS_BASE__PARSE_NUMBER_FXX__REJECT_INF_AND_NAN means to reject inputs that -// would lead to infinite or Not-a-Number floating point values. By default, -// they are accepted. -// -// This affects the literal "inf" as input, but also affects inputs like -// "1e999" that would overflow double-precision floating point. -#define WUFFS_BASE__PARSE_NUMBER_FXX__REJECT_INF_AND_NAN ((uint32_t)0x00000020) - -// -------- - -// Options (bitwise or'ed together) for wuffs_base__render_number_xxx -// functions. The XXX options apply to both integer and floating point. The FXX -// options apply only to floating point. - -#define WUFFS_BASE__RENDER_NUMBER_XXX__DEFAULT_OPTIONS ((uint32_t)0x00000000) - -// WUFFS_BASE__RENDER_NUMBER_XXX__ALIGN_RIGHT means to render to the right side -// (higher indexes) of the destination slice, leaving any untouched bytes on -// the left side (lower indexes). The default is vice versa: rendering on the -// left with slack on the right. -#define WUFFS_BASE__RENDER_NUMBER_XXX__ALIGN_RIGHT ((uint32_t)0x00000100) - -// WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN means to render the leading -// "+" for non-negative numbers: "+0" and "+12.3" instead of "0" and "12.3". -#define WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN ((uint32_t)0x00000200) - -// WUFFS_BASE__RENDER_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA means to render -// one-and-a-half as "1,5" instead of "1.5". -#define WUFFS_BASE__RENDER_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA \ - ((uint32_t)0x00001000) - -// WUFFS_BASE__RENDER_NUMBER_FXX__EXPONENT_ETC means whether to never -// (EXPONENT_ABSENT, equivalent to printf's "%f") or to always -// (EXPONENT_PRESENT, equivalent to printf's "%e") render a floating point -// number as "1.23e+05" instead of "123000". -// -// Having both bits set is the same has having neither bit set, where the -// notation used depends on whether the exponent is sufficiently large: "0.5" -// is preferred over "5e-01" but "5e-09" is preferred over "0.000000005". -#define WUFFS_BASE__RENDER_NUMBER_FXX__EXPONENT_ABSENT ((uint32_t)0x00002000) -#define WUFFS_BASE__RENDER_NUMBER_FXX__EXPONENT_PRESENT ((uint32_t)0x00004000) - -// WUFFS_BASE__RENDER_NUMBER_FXX__JUST_ENOUGH_PRECISION means to render the -// smallest number of digits so that parsing the resultant string will recover -// the same double-precision floating point number. -// -// For example, double-precision cannot distinguish between 0.3 and -// 0.299999999999999988897769753748434595763683319091796875, so when this bit -// is set, rendering the latter will produce "0.3" but rendering -// 0.3000000000000000444089209850062616169452667236328125 will produce -// "0.30000000000000004". -#define WUFFS_BASE__RENDER_NUMBER_FXX__JUST_ENOUGH_PRECISION \ - ((uint32_t)0x00008000) - -// ---------------- IEEE 754 Floating Point - -// wuffs_base__ieee_754_bit_representation__etc converts between a double -// precision numerical value and its IEEE 754 representations: -// - 16-bit: 1 sign bit, 5 exponent bits, 10 explicit significand bits. -// - 32-bit: 1 sign bit, 8 exponent bits, 23 explicit significand bits. -// - 64-bit: 1 sign bit, 11 exponent bits, 52 explicit significand bits. -// -// For example, it converts between: -// - +1.0 and 0x3C00, 0x3F80_0000 or 0x3FF0_0000_0000_0000. -// - +5.5 and 0x4580, 0x40B0_0000 or 0x4016_0000_0000_0000. -// - -inf and 0xFC00, 0xFF80_0000 or 0xFFF0_0000_0000_0000. -// -// Converting from f64 to shorter formats (f16 or f32, represented in C as -// uint16_t and uint32_t) may be lossy. Such functions have names that look -// like etc_truncate, as converting finite numbers produce equal or smaller -// (closer-to-zero) finite numbers. For example, 1048576.0 is a perfectly valid -// f64 number, but converting it to a f16 (with truncation) produces 65504.0, -// the largest finite f16 number. Truncating a f64-typed value d to f32 does -// not always produce the same result as the C-style cast ((float)d), as -// casting can convert from finite numbers to infinite ones. -// -// Converting infinities or NaNs produces infinities or NaNs and always report -// no loss, even though there a multiple NaN representations so that round- -// tripping a f64-typed NaN may produce a different 64 bits. Nonetheless, the -// etc_truncate functions preserve a NaN's "quiet vs signaling" bit. -// -// See https://en.wikipedia.org/wiki/Double-precision_floating-point_format - -typedef struct wuffs_base__lossy_value_u16__struct { - uint16_t value; - bool lossy; -} wuffs_base__lossy_value_u16; - -typedef struct wuffs_base__lossy_value_u32__struct { - uint32_t value; - bool lossy; -} wuffs_base__lossy_value_u32; - -WUFFS_BASE__MAYBE_STATIC wuffs_base__lossy_value_u16 // -wuffs_base__ieee_754_bit_representation__from_f64_to_u16_truncate(double f); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__lossy_value_u32 // -wuffs_base__ieee_754_bit_representation__from_f64_to_u32_truncate(double f); - -static inline uint64_t // -wuffs_base__ieee_754_bit_representation__from_f64_to_u64(double f) { - uint64_t u = 0; - if (sizeof(uint64_t) == sizeof(double)) { - memcpy(&u, &f, sizeof(uint64_t)); - } - return u; -} - -static inline double // -wuffs_base__ieee_754_bit_representation__from_u16_to_f64(uint16_t u) { - uint64_t v = ((uint64_t)(u & 0x8000)) << 48; - - do { - uint64_t exp = (u >> 10) & 0x1F; - uint64_t man = u & 0x3FF; - if (exp == 0x1F) { // Infinity or NaN. - exp = 2047; - } else if (exp != 0) { // Normal. - exp += 1008; // 1008 = 1023 - 15, the difference in biases. - } else if (man != 0) { // Subnormal but non-zero. - uint32_t clz = wuffs_base__count_leading_zeroes_u64(man); - exp = 1062 - clz; // 1062 = 1008 + 64 - 10. - man = 0x3FF & (man << (clz - 53)); - } else { // Zero. - break; - } - v |= (exp << 52) | (man << 42); - } while (0); - - double f = 0; - if (sizeof(uint64_t) == sizeof(double)) { - memcpy(&f, &v, sizeof(uint64_t)); - } - return f; -} - -static inline double // -wuffs_base__ieee_754_bit_representation__from_u32_to_f64(uint32_t u) { - float f = 0; - if (sizeof(uint32_t) == sizeof(float)) { - memcpy(&f, &u, sizeof(uint32_t)); - } - return (double)f; -} - -static inline double // -wuffs_base__ieee_754_bit_representation__from_u64_to_f64(uint64_t u) { - double f = 0; - if (sizeof(uint64_t) == sizeof(double)) { - memcpy(&f, &u, sizeof(uint64_t)); - } - return f; -} - -// ---------------- Parsing and Rendering Numbers - -// wuffs_base__parse_number_f64 parses the floating point number in s. For -// example, if s contains the bytes "1.5" then it will return the double 1.5. -// -// It returns an error if s does not contain a floating point number. -// -// It does not necessarily return an error if the conversion is lossy, e.g. if -// s is "0.3", which double-precision floating point cannot represent exactly. -// -// Similarly, the returned value may be infinite (and no error returned) even -// if s was not "inf", when the input is nominally finite but sufficiently -// larger than DBL_MAX, about 1.8e+308. -// -// It is similar to the C standard library's strtod function, but: -// - Errors are returned in-band (in a result type), not out-of-band (errno). -// - It takes a slice (a pointer and length), not a NUL-terminated C string. -// - It does not take an optional endptr argument. It does not allow a partial -// parse: it returns an error unless all of s is consumed. -// - It does not allow whitespace, leading or otherwise. -// - It does not allow hexadecimal floating point numbers. -// - It is not affected by i18n / l10n settings such as environment variables. -// -// The options argument can change these, but by default, it: -// - Allows "inf", "+Infinity" and "-NAN", case insensitive. Similarly, -// without an explicit opt-out, it would successfully parse "1e999" as -// infinity, even though it overflows double-precision floating point. -// - Rejects underscores. With an explicit opt-in, "_3.141_592" would -// successfully parse as an approximation to π. -// - Rejects unnecessary leading zeroes: "00", "0644" and "00.7". -// - Uses a dot '1.5' instead of a comma '1,5' for the decimal separator. -// -// For modular builds that divide the base module into sub-modules, using this -// function requires the WUFFS_CONFIG__MODULE__BASE__FLOATCONV sub-module, not -// just WUFFS_CONFIG__MODULE__BASE__CORE. -WUFFS_BASE__MAYBE_STATIC wuffs_base__result_f64 // -wuffs_base__parse_number_f64(wuffs_base__slice_u8 s, uint32_t options); - -// wuffs_base__parse_number_i64 parses the ASCII integer in s. For example, if -// s contains the bytes "-123" then it will return the int64_t -123. -// -// It returns an error if s does not contain an integer or if the integer -// within would overflow an int64_t. -// -// It is similar to wuffs_base__parse_number_u64 but it returns a signed -// integer, not an unsigned integer. It also allows a leading '+' or '-'. -// -// For modular builds that divide the base module into sub-modules, using this -// function requires the WUFFS_CONFIG__MODULE__BASE__INTCONV sub-module, not -// just WUFFS_CONFIG__MODULE__BASE__CORE. -WUFFS_BASE__MAYBE_STATIC wuffs_base__result_i64 // -wuffs_base__parse_number_i64(wuffs_base__slice_u8 s, uint32_t options); - -// wuffs_base__parse_number_u64 parses the ASCII integer in s. For example, if -// s contains the bytes "123" then it will return the uint64_t 123. -// -// It returns an error if s does not contain an integer or if the integer -// within would overflow a uint64_t. -// -// It is similar to the C standard library's strtoull function, but: -// - Errors are returned in-band (in a result type), not out-of-band (errno). -// - It takes a slice (a pointer and length), not a NUL-terminated C string. -// - It does not take an optional endptr argument. It does not allow a partial -// parse: it returns an error unless all of s is consumed. -// - It does not allow whitespace, leading or otherwise. -// - It does not allow a leading '+' or '-'. -// - It does not take a base argument (e.g. base 10 vs base 16). Instead, it -// always accepts both decimal (e.g "1234", "0d5678") and hexadecimal (e.g. -// "0x9aBC"). The caller is responsible for prior filtering of e.g. hex -// numbers if they are unwanted. For example, Wuffs' JSON decoder will only -// produce a wuffs_base__token for decimal numbers, not hexadecimal. -// - It is not affected by i18n / l10n settings such as environment variables. -// -// The options argument can change these, but by default, it: -// - Rejects underscores. With an explicit opt-in, "__0D_1_002" would -// successfully parse as "one thousand and two". Underscores are still -// rejected inside the optional 2-byte opening "0d" or "0X" that denotes -// base-10 or base-16. -// - Rejects unnecessary leading zeroes: "00" and "0644". -// -// For modular builds that divide the base module into sub-modules, using this -// function requires the WUFFS_CONFIG__MODULE__BASE__INTCONV sub-module, not -// just WUFFS_CONFIG__MODULE__BASE__CORE. -WUFFS_BASE__MAYBE_STATIC wuffs_base__result_u64 // -wuffs_base__parse_number_u64(wuffs_base__slice_u8 s, uint32_t options); - -// -------- - -// WUFFS_BASE__I64__BYTE_LENGTH__MAX_INCL is the string length of -// "-9223372036854775808" and "+9223372036854775807", INT64_MIN and INT64_MAX. -#define WUFFS_BASE__I64__BYTE_LENGTH__MAX_INCL 20 - -// WUFFS_BASE__U64__BYTE_LENGTH__MAX_INCL is the string length of -// "+18446744073709551615", UINT64_MAX. -#define WUFFS_BASE__U64__BYTE_LENGTH__MAX_INCL 21 - -// wuffs_base__render_number_f64 writes the decimal encoding of x to dst and -// returns the number of bytes written. If dst is shorter than the entire -// encoding, it returns 0 (and no bytes are written). -// -// For those familiar with C's printf or Go's fmt.Printf functions: -// - "%e" means the WUFFS_BASE__RENDER_NUMBER_FXX__EXPONENT_PRESENT option. -// - "%f" means the WUFFS_BASE__RENDER_NUMBER_FXX__EXPONENT_ABSENT option. -// - "%g" means neither or both bits are set. -// -// The precision argument controls the number of digits rendered, excluding the -// exponent (the "e+05" in "1.23e+05"): -// - for "%e" and "%f" it is the number of digits after the decimal separator, -// - for "%g" it is the number of significant digits (and trailing zeroes are -// removed). -// -// A precision of 6 gives similar output to printf's defaults. -// -// A precision greater than 4095 is equivalent to 4095. -// -// The precision argument is ignored when the -// WUFFS_BASE__RENDER_NUMBER_FXX__JUST_ENOUGH_PRECISION option is set. This is -// similar to Go's strconv.FormatFloat with a negative (i.e. non-sensical) -// precision, but there is no corresponding feature in C's printf. -// -// Extreme values of x will be rendered as "NaN", "Inf" (or "+Inf" if the -// WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN option is set) or "-Inf". -// -// For modular builds that divide the base module into sub-modules, using this -// function requires the WUFFS_CONFIG__MODULE__BASE__FLOATCONV sub-module, not -// just WUFFS_CONFIG__MODULE__BASE__CORE. -WUFFS_BASE__MAYBE_STATIC size_t // -wuffs_base__render_number_f64(wuffs_base__slice_u8 dst, - double x, - uint32_t precision, - uint32_t options); - -// wuffs_base__render_number_i64 writes the decimal encoding of x to dst and -// returns the number of bytes written. If dst is shorter than the entire -// encoding, it returns 0 (and no bytes are written). -// -// dst will never be too short if its length is at least 20, also known as -// WUFFS_BASE__I64__BYTE_LENGTH__MAX_INCL. -// -// For modular builds that divide the base module into sub-modules, using this -// function requires the WUFFS_CONFIG__MODULE__BASE__INTCONV sub-module, not -// just WUFFS_CONFIG__MODULE__BASE__CORE. -WUFFS_BASE__MAYBE_STATIC size_t // -wuffs_base__render_number_i64(wuffs_base__slice_u8 dst, - int64_t x, - uint32_t options); - -// wuffs_base__render_number_u64 writes the decimal encoding of x to dst and -// returns the number of bytes written. If dst is shorter than the entire -// encoding, it returns 0 (and no bytes are written). -// -// dst will never be too short if its length is at least 21, also known as -// WUFFS_BASE__U64__BYTE_LENGTH__MAX_INCL. -// -// For modular builds that divide the base module into sub-modules, using this -// function requires the WUFFS_CONFIG__MODULE__BASE__INTCONV sub-module, not -// just WUFFS_CONFIG__MODULE__BASE__CORE. -WUFFS_BASE__MAYBE_STATIC size_t // -wuffs_base__render_number_u64(wuffs_base__slice_u8 dst, - uint64_t x, - uint32_t options); - -// ---------------- Base-16 - -// Options (bitwise or'ed together) for wuffs_base__base_16__xxx functions. - -#define WUFFS_BASE__BASE_16__DEFAULT_OPTIONS ((uint32_t)0x00000000) - -// wuffs_base__base_16__decode2 converts "6A6b" to "jk", where e.g. 'j' is -// U+006A. There are 2 src bytes for every dst byte. -// -// It assumes that the src bytes are two hexadecimal digits (0-9, A-F, a-f), -// repeated. It may write nonsense bytes if not, although it will not read or -// write out of bounds. -// -// For modular builds that divide the base module into sub-modules, using this -// function requires the WUFFS_CONFIG__MODULE__BASE__INTCONV sub-module, not -// just WUFFS_CONFIG__MODULE__BASE__CORE. -WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output // -wuffs_base__base_16__decode2(wuffs_base__slice_u8 dst, - wuffs_base__slice_u8 src, - bool src_closed, - uint32_t options); - -// wuffs_base__base_16__decode4 converts both "\\x6A\\x6b" and "??6a??6B" to -// "jk", where e.g. 'j' is U+006A. There are 4 src bytes for every dst byte. -// -// It assumes that the src bytes are two ignored bytes and then two hexadecimal -// digits (0-9, A-F, a-f), repeated. It may write nonsense bytes if not, -// although it will not read or write out of bounds. -// -// For modular builds that divide the base module into sub-modules, using this -// function requires the WUFFS_CONFIG__MODULE__BASE__INTCONV sub-module, not -// just WUFFS_CONFIG__MODULE__BASE__CORE. -WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output // -wuffs_base__base_16__decode4(wuffs_base__slice_u8 dst, - wuffs_base__slice_u8 src, - bool src_closed, - uint32_t options); - -// wuffs_base__base_16__encode2 converts "jk" to "6A6B", where e.g. 'j' is -// U+006A. There are 2 dst bytes for every src byte. -// -// For modular builds that divide the base module into sub-modules, using this -// function requires the WUFFS_CONFIG__MODULE__BASE__INTCONV sub-module, not -// just WUFFS_CONFIG__MODULE__BASE__CORE. -WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output // -wuffs_base__base_16__encode2(wuffs_base__slice_u8 dst, - wuffs_base__slice_u8 src, - bool src_closed, - uint32_t options); - -// wuffs_base__base_16__encode4 converts "jk" to "\\x6A\\x6B", where e.g. 'j' -// is U+006A. There are 4 dst bytes for every src byte. -// -// For modular builds that divide the base module into sub-modules, using this -// function requires the WUFFS_CONFIG__MODULE__BASE__INTCONV sub-module, not -// just WUFFS_CONFIG__MODULE__BASE__CORE. -WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output // -wuffs_base__base_16__encode2(wuffs_base__slice_u8 dst, - wuffs_base__slice_u8 src, - bool src_closed, - uint32_t options); - -// ---------------- Base-64 - -// Options (bitwise or'ed together) for wuffs_base__base_64__xxx functions. - -#define WUFFS_BASE__BASE_64__DEFAULT_OPTIONS ((uint32_t)0x00000000) - -// WUFFS_BASE__BASE_64__DECODE_ALLOW_PADDING means that, when decoding base-64, -// the input may (but does not need to) be padded with '=' bytes so that the -// overall encoded length in bytes is a multiple of 4. A successful decoding -// will return a num_src that includes those padding bytes. -// -// Excess padding (e.g. three final '='s) will be rejected as bad data. -#define WUFFS_BASE__BASE_64__DECODE_ALLOW_PADDING ((uint32_t)0x00000001) - -// WUFFS_BASE__BASE_64__ENCODE_EMIT_PADDING means that, when encoding base-64, -// the output will be padded with '=' bytes so that the overall encoded length -// in bytes is a multiple of 4. -#define WUFFS_BASE__BASE_64__ENCODE_EMIT_PADDING ((uint32_t)0x00000002) - -// WUFFS_BASE__BASE_64__URL_ALPHABET means that, for base-64, the URL-friendly -// and file-name-friendly alphabet be used, as per RFC 4648 section 5. When -// this option bit is off, the standard alphabet from section 4 is used. -#define WUFFS_BASE__BASE_64__URL_ALPHABET ((uint32_t)0x00000100) - -// wuffs_base__base_64__decode transforms base-64 encoded bytes from src to -// arbitrary bytes in dst. -// -// It will not permit line breaks or other whitespace in src. Filtering those -// out is the responsibility of the caller. -// -// For modular builds that divide the base module into sub-modules, using this -// function requires the WUFFS_CONFIG__MODULE__BASE__INTCONV sub-module, not -// just WUFFS_CONFIG__MODULE__BASE__CORE. -WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output // -wuffs_base__base_64__decode(wuffs_base__slice_u8 dst, - wuffs_base__slice_u8 src, - bool src_closed, - uint32_t options); - -// wuffs_base__base_64__encode transforms arbitrary bytes from src to base-64 -// encoded bytes in dst. -// -// For modular builds that divide the base module into sub-modules, using this -// function requires the WUFFS_CONFIG__MODULE__BASE__INTCONV sub-module, not -// just WUFFS_CONFIG__MODULE__BASE__CORE. -WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output // -wuffs_base__base_64__encode(wuffs_base__slice_u8 dst, - wuffs_base__slice_u8 src, - bool src_closed, - uint32_t options); - -// ---------------- Unicode and UTF-8 - -#define WUFFS_BASE__UNICODE_CODE_POINT__MIN_INCL 0x00000000 -#define WUFFS_BASE__UNICODE_CODE_POINT__MAX_INCL 0x0010FFFF - -#define WUFFS_BASE__UNICODE_REPLACEMENT_CHARACTER 0x0000FFFD - -#define WUFFS_BASE__UNICODE_SURROGATE__MIN_INCL 0x0000D800 -#define WUFFS_BASE__UNICODE_SURROGATE__MAX_INCL 0x0000DFFF - -#define WUFFS_BASE__ASCII__MIN_INCL 0x00 -#define WUFFS_BASE__ASCII__MAX_INCL 0x7F - -#define WUFFS_BASE__UTF_8__BYTE_LENGTH__MIN_INCL 1 -#define WUFFS_BASE__UTF_8__BYTE_LENGTH__MAX_INCL 4 - -#define WUFFS_BASE__UTF_8__BYTE_LENGTH_1__CODE_POINT__MIN_INCL 0x00000000 -#define WUFFS_BASE__UTF_8__BYTE_LENGTH_1__CODE_POINT__MAX_INCL 0x0000007F -#define WUFFS_BASE__UTF_8__BYTE_LENGTH_2__CODE_POINT__MIN_INCL 0x00000080 -#define WUFFS_BASE__UTF_8__BYTE_LENGTH_2__CODE_POINT__MAX_INCL 0x000007FF -#define WUFFS_BASE__UTF_8__BYTE_LENGTH_3__CODE_POINT__MIN_INCL 0x00000800 -#define WUFFS_BASE__UTF_8__BYTE_LENGTH_3__CODE_POINT__MAX_INCL 0x0000FFFF -#define WUFFS_BASE__UTF_8__BYTE_LENGTH_4__CODE_POINT__MIN_INCL 0x00010000 -#define WUFFS_BASE__UTF_8__BYTE_LENGTH_4__CODE_POINT__MAX_INCL 0x0010FFFF - -// -------- - -// wuffs_base__utf_8__next__output is the type returned by -// wuffs_base__utf_8__next. -typedef struct wuffs_base__utf_8__next__output__struct { - uint32_t code_point; - uint32_t byte_length; - -#ifdef __cplusplus - inline bool is_valid() const; -#endif // __cplusplus - -} wuffs_base__utf_8__next__output; - -static inline wuffs_base__utf_8__next__output // -wuffs_base__make_utf_8__next__output(uint32_t code_point, - uint32_t byte_length) { - wuffs_base__utf_8__next__output ret; - ret.code_point = code_point; - ret.byte_length = byte_length; - return ret; -} - -static inline bool // -wuffs_base__utf_8__next__output__is_valid( - const wuffs_base__utf_8__next__output* o) { - if (o) { - uint32_t cp = o->code_point; - switch (o->byte_length) { - case 1: - return (cp <= 0x7F); - case 2: - return (0x080 <= cp) && (cp <= 0x7FF); - case 3: - // Avoid the 0xD800 ..= 0xDFFF surrogate range. - return ((0x0800 <= cp) && (cp <= 0xD7FF)) || - ((0xE000 <= cp) && (cp <= 0xFFFF)); - case 4: - return (0x00010000 <= cp) && (cp <= 0x0010FFFF); - } - } - return false; -} - -#ifdef __cplusplus - -inline bool // -wuffs_base__utf_8__next__output::is_valid() const { - return wuffs_base__utf_8__next__output__is_valid(this); -} - -#endif // __cplusplus - -// -------- - -// wuffs_base__utf_8__encode writes the UTF-8 encoding of code_point to s and -// returns the number of bytes written. If code_point is invalid, or if s is -// shorter than the entire encoding, it returns 0 (and no bytes are written). -// -// s will never be too short if its length is at least 4, also known as -// WUFFS_BASE__UTF_8__BYTE_LENGTH__MAX_INCL. -// -// For modular builds that divide the base module into sub-modules, using this -// function requires the WUFFS_CONFIG__MODULE__BASE__UTF8 sub-module, not just -// WUFFS_CONFIG__MODULE__BASE__CORE. -WUFFS_BASE__MAYBE_STATIC size_t // -wuffs_base__utf_8__encode(wuffs_base__slice_u8 dst, uint32_t code_point); - -// wuffs_base__utf_8__next returns the next UTF-8 code point (and that code -// point's byte length) at the start of the read-only slice (s_ptr, s_len). -// -// There are exactly two cases in which this function returns something where -// wuffs_base__utf_8__next__output__is_valid is false: -// - If s is empty then it returns {.code_point=0, .byte_length=0}. -// - If s is non-empty and starts with invalid UTF-8 then it returns -// {.code_point=WUFFS_BASE__UNICODE_REPLACEMENT_CHARACTER, .byte_length=1}. -// -// Otherwise, it returns something where -// wuffs_base__utf_8__next__output__is_valid is true. -// -// In any case, it always returns an output that satisfies both of: -// - (output.code_point <= WUFFS_BASE__UNICODE_CODE_POINT__MAX_INCL). -// - (output.byte_length <= s_len). -// -// If s is a sub-slice of a larger slice of valid UTF-8, but that sub-slice -// boundary occurs in the middle of a multi-byte UTF-8 encoding of a single -// code point, then this function may return something invalid. It is the -// caller's responsibility to split on or otherwise manage UTF-8 boundaries. -// -// For modular builds that divide the base module into sub-modules, using this -// function requires the WUFFS_CONFIG__MODULE__BASE__UTF8 sub-module, not just -// WUFFS_CONFIG__MODULE__BASE__CORE. -WUFFS_BASE__MAYBE_STATIC wuffs_base__utf_8__next__output // -wuffs_base__utf_8__next(const uint8_t* s_ptr, size_t s_len); - -// wuffs_base__utf_8__next_from_end is like wuffs_base__utf_8__next except that -// it looks at the end of (s_ptr, s_len) instead of the start. -// -// For modular builds that divide the base module into sub-modules, using this -// function requires the WUFFS_CONFIG__MODULE__BASE__UTF8 sub-module, not just -// WUFFS_CONFIG__MODULE__BASE__CORE. -WUFFS_BASE__MAYBE_STATIC wuffs_base__utf_8__next__output // -wuffs_base__utf_8__next_from_end(const uint8_t* s_ptr, size_t s_len); - -// wuffs_base__utf_8__longest_valid_prefix returns the largest n such that the -// sub-slice s[..n] is valid UTF-8, where s is the read-only slice (s_ptr, -// s_len). -// -// In particular, it returns s_len if and only if all of s is valid UTF-8. -// -// If s is a sub-slice of a larger slice of valid UTF-8, but that sub-slice -// boundary occurs in the middle of a multi-byte UTF-8 encoding of a single -// code point, then this function will return less than s_len. It is the -// caller's responsibility to split on or otherwise manage UTF-8 boundaries. -// -// For modular builds that divide the base module into sub-modules, using this -// function requires the WUFFS_CONFIG__MODULE__BASE__UTF8 sub-module, not just -// WUFFS_CONFIG__MODULE__BASE__CORE. -WUFFS_BASE__MAYBE_STATIC size_t // -wuffs_base__utf_8__longest_valid_prefix(const uint8_t* s_ptr, size_t s_len); - -// wuffs_base__ascii__longest_valid_prefix returns the largest n such that the -// sub-slice s[..n] is valid ASCII, where s is the read-only slice (s_ptr, -// s_len). -// -// In particular, it returns s_len if and only if all of s is valid ASCII. -// Equivalently, when none of the bytes in s have the 0x80 high bit set. -// -// For modular builds that divide the base module into sub-modules, using this -// function requires the WUFFS_CONFIG__MODULE__BASE__UTF8 sub-module, not just -// WUFFS_CONFIG__MODULE__BASE__CORE. -WUFFS_BASE__MAYBE_STATIC size_t // -wuffs_base__ascii__longest_valid_prefix(const uint8_t* s_ptr, size_t s_len); - -// ---------------- Interface Declarations. - -// For modular builds that divide the base module into sub-modules, using these -// functions require the WUFFS_CONFIG__MODULE__BASE__INTERFACES sub-module, not -// just WUFFS_CONFIG__MODULE__BASE__CORE. - -// -------- - -extern const char wuffs_base__hasher_u32__vtable_name[]; - -typedef struct wuffs_base__hasher_u32__func_ptrs__struct { - wuffs_base__status (*set_quirk)( - void* self, - uint32_t a_key, - uint64_t a_value); - uint32_t (*update_u32)( - void* self, - wuffs_base__slice_u8 a_x); -} wuffs_base__hasher_u32__func_ptrs; - -typedef struct wuffs_base__hasher_u32__struct wuffs_base__hasher_u32; - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_base__hasher_u32__set_quirk( - wuffs_base__hasher_u32* self, - uint32_t a_key, - uint64_t a_value); - -WUFFS_BASE__MAYBE_STATIC uint32_t -wuffs_base__hasher_u32__update_u32( - wuffs_base__hasher_u32* self, - wuffs_base__slice_u8 a_x); - -#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) - -struct wuffs_base__hasher_u32__struct { - struct { - uint32_t magic; - uint32_t active_coroutine; - wuffs_base__vtable first_vtable; - } private_impl; - -#ifdef __cplusplus -#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR) - using unique_ptr = std::unique_ptr; -#endif - - inline wuffs_base__status - set_quirk( - uint32_t a_key, - uint64_t a_value) { - return wuffs_base__hasher_u32__set_quirk( - this, a_key, a_value); - } - - inline uint32_t - update_u32( - wuffs_base__slice_u8 a_x) { - return wuffs_base__hasher_u32__update_u32( - this, a_x); - } - -#endif // __cplusplus -}; // struct wuffs_base__hasher_u32__struct - -#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) - -// -------- - -extern const char wuffs_base__image_decoder__vtable_name[]; - -typedef struct wuffs_base__image_decoder__func_ptrs__struct { - wuffs_base__status (*decode_frame)( - void* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__pixel_blend a_blend, - wuffs_base__slice_u8 a_workbuf, - wuffs_base__decode_frame_options* a_opts); - wuffs_base__status (*decode_frame_config)( - void* self, - wuffs_base__frame_config* a_dst, - wuffs_base__io_buffer* a_src); - wuffs_base__status (*decode_image_config)( - void* self, - wuffs_base__image_config* a_dst, - wuffs_base__io_buffer* a_src); - wuffs_base__rect_ie_u32 (*frame_dirty_rect)( - const void* self); - uint32_t (*num_animation_loops)( - const void* self); - uint64_t (*num_decoded_frame_configs)( - const void* self); - uint64_t (*num_decoded_frames)( - const void* self); - wuffs_base__status (*restart_frame)( - void* self, - uint64_t a_index, - uint64_t a_io_position); - wuffs_base__status (*set_quirk)( - void* self, - uint32_t a_key, - uint64_t a_value); - wuffs_base__empty_struct (*set_report_metadata)( - void* self, - uint32_t a_fourcc, - bool a_report); - wuffs_base__status (*tell_me_more)( - void* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__more_information* a_minfo, - wuffs_base__io_buffer* a_src); - wuffs_base__range_ii_u64 (*workbuf_len)( - const void* self); -} wuffs_base__image_decoder__func_ptrs; - -typedef struct wuffs_base__image_decoder__struct wuffs_base__image_decoder; - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_base__image_decoder__decode_frame( - wuffs_base__image_decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__pixel_blend a_blend, - wuffs_base__slice_u8 a_workbuf, - wuffs_base__decode_frame_options* a_opts); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_base__image_decoder__decode_frame_config( - wuffs_base__image_decoder* self, - wuffs_base__frame_config* a_dst, - wuffs_base__io_buffer* a_src); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_base__image_decoder__decode_image_config( - wuffs_base__image_decoder* self, - wuffs_base__image_config* a_dst, - wuffs_base__io_buffer* a_src); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32 -wuffs_base__image_decoder__frame_dirty_rect( - const wuffs_base__image_decoder* self); - -WUFFS_BASE__MAYBE_STATIC uint32_t -wuffs_base__image_decoder__num_animation_loops( - const wuffs_base__image_decoder* self); - -WUFFS_BASE__MAYBE_STATIC uint64_t -wuffs_base__image_decoder__num_decoded_frame_configs( - const wuffs_base__image_decoder* self); - -WUFFS_BASE__MAYBE_STATIC uint64_t -wuffs_base__image_decoder__num_decoded_frames( - const wuffs_base__image_decoder* self); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_base__image_decoder__restart_frame( - wuffs_base__image_decoder* self, - uint64_t a_index, - uint64_t a_io_position); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_base__image_decoder__set_quirk( - wuffs_base__image_decoder* self, - uint32_t a_key, - uint64_t a_value); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct -wuffs_base__image_decoder__set_report_metadata( - wuffs_base__image_decoder* self, - uint32_t a_fourcc, - bool a_report); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_base__image_decoder__tell_me_more( - wuffs_base__image_decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__more_information* a_minfo, - wuffs_base__io_buffer* a_src); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 -wuffs_base__image_decoder__workbuf_len( - const wuffs_base__image_decoder* self); - -#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) - -struct wuffs_base__image_decoder__struct { - struct { - uint32_t magic; - uint32_t active_coroutine; - wuffs_base__vtable first_vtable; - } private_impl; - -#ifdef __cplusplus -#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR) - using unique_ptr = std::unique_ptr; -#endif - - inline wuffs_base__status - decode_frame( - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__pixel_blend a_blend, - wuffs_base__slice_u8 a_workbuf, - wuffs_base__decode_frame_options* a_opts) { - return wuffs_base__image_decoder__decode_frame( - this, a_dst, a_src, a_blend, a_workbuf, a_opts); - } - - inline wuffs_base__status - decode_frame_config( - wuffs_base__frame_config* a_dst, - wuffs_base__io_buffer* a_src) { - return wuffs_base__image_decoder__decode_frame_config( - this, a_dst, a_src); - } - - inline wuffs_base__status - decode_image_config( - wuffs_base__image_config* a_dst, - wuffs_base__io_buffer* a_src) { - return wuffs_base__image_decoder__decode_image_config( - this, a_dst, a_src); - } - - inline wuffs_base__rect_ie_u32 - frame_dirty_rect() const { - return wuffs_base__image_decoder__frame_dirty_rect(this); - } - - inline uint32_t - num_animation_loops() const { - return wuffs_base__image_decoder__num_animation_loops(this); - } - - inline uint64_t - num_decoded_frame_configs() const { - return wuffs_base__image_decoder__num_decoded_frame_configs(this); - } - - inline uint64_t - num_decoded_frames() const { - return wuffs_base__image_decoder__num_decoded_frames(this); - } - - inline wuffs_base__status - restart_frame( - uint64_t a_index, - uint64_t a_io_position) { - return wuffs_base__image_decoder__restart_frame( - this, a_index, a_io_position); - } - - inline wuffs_base__status - set_quirk( - uint32_t a_key, - uint64_t a_value) { - return wuffs_base__image_decoder__set_quirk( - this, a_key, a_value); - } - - inline wuffs_base__empty_struct - set_report_metadata( - uint32_t a_fourcc, - bool a_report) { - return wuffs_base__image_decoder__set_report_metadata( - this, a_fourcc, a_report); - } - - inline wuffs_base__status - tell_me_more( - wuffs_base__io_buffer* a_dst, - wuffs_base__more_information* a_minfo, - wuffs_base__io_buffer* a_src) { - return wuffs_base__image_decoder__tell_me_more( - this, a_dst, a_minfo, a_src); - } - - inline wuffs_base__range_ii_u64 - workbuf_len() const { - return wuffs_base__image_decoder__workbuf_len(this); - } - -#endif // __cplusplus -}; // struct wuffs_base__image_decoder__struct - -#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) - -// -------- - -extern const char wuffs_base__io_transformer__vtable_name[]; - -typedef struct wuffs_base__io_transformer__func_ptrs__struct { - wuffs_base__status (*set_quirk)( - void* self, - uint32_t a_key, - uint64_t a_value); - wuffs_base__status (*transform_io)( - void* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__slice_u8 a_workbuf); - wuffs_base__range_ii_u64 (*workbuf_len)( - const void* self); -} wuffs_base__io_transformer__func_ptrs; - -typedef struct wuffs_base__io_transformer__struct wuffs_base__io_transformer; - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_base__io_transformer__set_quirk( - wuffs_base__io_transformer* self, - uint32_t a_key, - uint64_t a_value); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_base__io_transformer__transform_io( - wuffs_base__io_transformer* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__slice_u8 a_workbuf); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 -wuffs_base__io_transformer__workbuf_len( - const wuffs_base__io_transformer* self); - -#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) - -struct wuffs_base__io_transformer__struct { - struct { - uint32_t magic; - uint32_t active_coroutine; - wuffs_base__vtable first_vtable; - } private_impl; - -#ifdef __cplusplus -#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR) - using unique_ptr = std::unique_ptr; -#endif - - inline wuffs_base__status - set_quirk( - uint32_t a_key, - uint64_t a_value) { - return wuffs_base__io_transformer__set_quirk( - this, a_key, a_value); - } - - inline wuffs_base__status - transform_io( - wuffs_base__io_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__slice_u8 a_workbuf) { - return wuffs_base__io_transformer__transform_io( - this, a_dst, a_src, a_workbuf); - } - - inline wuffs_base__range_ii_u64 - workbuf_len() const { - return wuffs_base__io_transformer__workbuf_len(this); - } - -#endif // __cplusplus -}; // struct wuffs_base__io_transformer__struct - -#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) - -// -------- - -extern const char wuffs_base__token_decoder__vtable_name[]; - -typedef struct wuffs_base__token_decoder__func_ptrs__struct { - wuffs_base__status (*decode_tokens)( - void* self, - wuffs_base__token_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__slice_u8 a_workbuf); - wuffs_base__status (*set_quirk)( - void* self, - uint32_t a_key, - uint64_t a_value); - wuffs_base__range_ii_u64 (*workbuf_len)( - const void* self); -} wuffs_base__token_decoder__func_ptrs; - -typedef struct wuffs_base__token_decoder__struct wuffs_base__token_decoder; - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_base__token_decoder__decode_tokens( - wuffs_base__token_decoder* self, - wuffs_base__token_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__slice_u8 a_workbuf); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_base__token_decoder__set_quirk( - wuffs_base__token_decoder* self, - uint32_t a_key, - uint64_t a_value); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 -wuffs_base__token_decoder__workbuf_len( - const wuffs_base__token_decoder* self); - -#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) - -struct wuffs_base__token_decoder__struct { - struct { - uint32_t magic; - uint32_t active_coroutine; - wuffs_base__vtable first_vtable; - } private_impl; - -#ifdef __cplusplus -#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR) - using unique_ptr = std::unique_ptr; -#endif - - inline wuffs_base__status - decode_tokens( - wuffs_base__token_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__slice_u8 a_workbuf) { - return wuffs_base__token_decoder__decode_tokens( - this, a_dst, a_src, a_workbuf); - } - - inline wuffs_base__status - set_quirk( - uint32_t a_key, - uint64_t a_value) { - return wuffs_base__token_decoder__set_quirk( - this, a_key, a_value); - } - - inline wuffs_base__range_ii_u64 - workbuf_len() const { - return wuffs_base__token_decoder__workbuf_len(this); - } - -#endif // __cplusplus -}; // struct wuffs_base__token_decoder__struct - -#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) - -// ---------------- - -#ifdef __cplusplus -} // extern "C" -#endif - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__ADLER32) || defined(WUFFS_NONMONOLITHIC) - -// ---------------- Status Codes - -// ---------------- Public Consts - -// ---------------- Struct Declarations - -typedef struct wuffs_adler32__hasher__struct wuffs_adler32__hasher; - -#ifdef __cplusplus -extern "C" { -#endif - -// ---------------- Public Initializer Prototypes - -// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self, -// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)". -// -// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version. -// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options. - -wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT -wuffs_adler32__hasher__initialize( - wuffs_adler32__hasher* self, - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options); - -size_t -sizeof__wuffs_adler32__hasher(); - -// ---------------- Allocs - -// These functions allocate and initialize Wuffs structs. They return NULL if -// memory allocation fails. If they return non-NULL, there is no need to call -// wuffs_foo__bar__initialize, but the caller is responsible for eventually -// calling free on the returned pointer. That pointer is effectively a C++ -// std::unique_ptr. - -wuffs_adler32__hasher* -wuffs_adler32__hasher__alloc(); - -static inline wuffs_base__hasher_u32* -wuffs_adler32__hasher__alloc_as__wuffs_base__hasher_u32() { - return (wuffs_base__hasher_u32*)(wuffs_adler32__hasher__alloc()); -} - -// ---------------- Upcasts - -static inline wuffs_base__hasher_u32* -wuffs_adler32__hasher__upcast_as__wuffs_base__hasher_u32( - wuffs_adler32__hasher* p) { - return (wuffs_base__hasher_u32*)p; -} - -// ---------------- Public Function Prototypes - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_adler32__hasher__set_quirk( - wuffs_adler32__hasher* self, - uint32_t a_key, - uint64_t a_value); - -WUFFS_BASE__MAYBE_STATIC uint32_t -wuffs_adler32__hasher__update_u32( - wuffs_adler32__hasher* self, - wuffs_base__slice_u8 a_x); - -#ifdef __cplusplus -} // extern "C" -#endif - -// ---------------- Struct Definitions - -// These structs' fields, and the sizeof them, are private implementation -// details that aren't guaranteed to be stable across Wuffs versions. -// -// See https://en.wikipedia.org/wiki/Opaque_pointer#C - -#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) - -struct wuffs_adler32__hasher__struct { - // Do not access the private_impl's or private_data's fields directly. There - // is no API/ABI compatibility or safety guarantee if you do so. Instead, use - // the wuffs_foo__bar__baz functions. - // - // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct - // can be stack allocated when WUFFS_IMPLEMENTATION is defined. - - struct { - uint32_t magic; - uint32_t active_coroutine; - wuffs_base__vtable vtable_for__wuffs_base__hasher_u32; - wuffs_base__vtable null_vtable; - - uint32_t f_state; - bool f_started; - - wuffs_base__empty_struct (*choosy_up)( - wuffs_adler32__hasher* self, - wuffs_base__slice_u8 a_x); - } private_impl; - -#ifdef __cplusplus -#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR) - using unique_ptr = std::unique_ptr; - - // On failure, the alloc_etc functions return nullptr. They don't throw. - - static inline unique_ptr - alloc() { - return unique_ptr(wuffs_adler32__hasher__alloc(), &free); - } - - static inline wuffs_base__hasher_u32::unique_ptr - alloc_as__wuffs_base__hasher_u32() { - return wuffs_base__hasher_u32::unique_ptr( - wuffs_adler32__hasher__alloc_as__wuffs_base__hasher_u32(), &free); - } -#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR) - -#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) - // Disallow constructing or copying an object via standard C++ mechanisms, - // e.g. the "new" operator, as this struct is intentionally opaque. Its total - // size and field layout is not part of the public, stable, memory-safe API. - // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and - // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as - // their first argument) rather than tweaking bar.private_impl.qux fields. - // - // In C, we can just leave wuffs_foo__bar as an incomplete type (unless - // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in - // order to provide convenience methods. These forward on "this", so that you - // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)". - wuffs_adler32__hasher__struct() = delete; - wuffs_adler32__hasher__struct(const wuffs_adler32__hasher__struct&) = delete; - wuffs_adler32__hasher__struct& operator=( - const wuffs_adler32__hasher__struct&) = delete; -#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) - -#if !defined(WUFFS_IMPLEMENTATION) - // As above, the size of the struct is not part of the public API, and unless - // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap - // allocated, not stack allocated. Its size is not intended to be known at - // compile time, but it is unfortunately divulged as a side effect of - // defining C++ convenience methods. Use "sizeof__T()", calling the function, - // instead of "sizeof T", invoking the operator. To make the two values - // different, so that passing the latter will be rejected by the initialize - // function, we add an arbitrary amount of dead weight. - uint8_t dead_weight[123000000]; // 123 MB. -#endif // !defined(WUFFS_IMPLEMENTATION) - - inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT - initialize( - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options) { - return wuffs_adler32__hasher__initialize( - this, sizeof_star_self, wuffs_version, options); - } - - inline wuffs_base__hasher_u32* - upcast_as__wuffs_base__hasher_u32() { - return (wuffs_base__hasher_u32*)this; - } - - inline wuffs_base__status - set_quirk( - uint32_t a_key, - uint64_t a_value) { - return wuffs_adler32__hasher__set_quirk(this, a_key, a_value); - } - - inline uint32_t - update_u32( - wuffs_base__slice_u8 a_x) { - return wuffs_adler32__hasher__update_u32(this, a_x); - } - -#endif // __cplusplus -}; // struct wuffs_adler32__hasher__struct - -#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) - -#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__ADLER32) || defined(WUFFS_NONMONOLITHIC) - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BMP) || defined(WUFFS_NONMONOLITHIC) - -// ---------------- Status Codes - -extern const char wuffs_bmp__error__bad_header[]; -extern const char wuffs_bmp__error__bad_rle_compression[]; -extern const char wuffs_bmp__error__truncated_input[]; -extern const char wuffs_bmp__error__unsupported_bmp_file[]; - -// ---------------- Public Consts - -#define WUFFS_BMP__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0 - -// ---------------- Struct Declarations - -typedef struct wuffs_bmp__decoder__struct wuffs_bmp__decoder; - -#ifdef __cplusplus -extern "C" { -#endif - -// ---------------- Public Initializer Prototypes - -// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self, -// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)". -// -// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version. -// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options. - -wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT -wuffs_bmp__decoder__initialize( - wuffs_bmp__decoder* self, - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options); - -size_t -sizeof__wuffs_bmp__decoder(); - -// ---------------- Allocs - -// These functions allocate and initialize Wuffs structs. They return NULL if -// memory allocation fails. If they return non-NULL, there is no need to call -// wuffs_foo__bar__initialize, but the caller is responsible for eventually -// calling free on the returned pointer. That pointer is effectively a C++ -// std::unique_ptr. - -wuffs_bmp__decoder* -wuffs_bmp__decoder__alloc(); - -static inline wuffs_base__image_decoder* -wuffs_bmp__decoder__alloc_as__wuffs_base__image_decoder() { - return (wuffs_base__image_decoder*)(wuffs_bmp__decoder__alloc()); -} - -// ---------------- Upcasts - -static inline wuffs_base__image_decoder* -wuffs_bmp__decoder__upcast_as__wuffs_base__image_decoder( - wuffs_bmp__decoder* p) { - return (wuffs_base__image_decoder*)p; -} - -// ---------------- Public Function Prototypes - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_bmp__decoder__set_quirk( - wuffs_bmp__decoder* self, - uint32_t a_key, - uint64_t a_value); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_bmp__decoder__decode_image_config( - wuffs_bmp__decoder* self, - wuffs_base__image_config* a_dst, - wuffs_base__io_buffer* a_src); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_bmp__decoder__decode_frame_config( - wuffs_bmp__decoder* self, - wuffs_base__frame_config* a_dst, - wuffs_base__io_buffer* a_src); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_bmp__decoder__decode_frame( - wuffs_bmp__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__pixel_blend a_blend, - wuffs_base__slice_u8 a_workbuf, - wuffs_base__decode_frame_options* a_opts); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32 -wuffs_bmp__decoder__frame_dirty_rect( - const wuffs_bmp__decoder* self); - -WUFFS_BASE__MAYBE_STATIC uint32_t -wuffs_bmp__decoder__num_animation_loops( - const wuffs_bmp__decoder* self); - -WUFFS_BASE__MAYBE_STATIC uint64_t -wuffs_bmp__decoder__num_decoded_frame_configs( - const wuffs_bmp__decoder* self); - -WUFFS_BASE__MAYBE_STATIC uint64_t -wuffs_bmp__decoder__num_decoded_frames( - const wuffs_bmp__decoder* self); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_bmp__decoder__restart_frame( - wuffs_bmp__decoder* self, - uint64_t a_index, - uint64_t a_io_position); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct -wuffs_bmp__decoder__set_report_metadata( - wuffs_bmp__decoder* self, - uint32_t a_fourcc, - bool a_report); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_bmp__decoder__tell_me_more( - wuffs_bmp__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__more_information* a_minfo, - wuffs_base__io_buffer* a_src); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 -wuffs_bmp__decoder__workbuf_len( - const wuffs_bmp__decoder* self); - -#ifdef __cplusplus -} // extern "C" -#endif - -// ---------------- Struct Definitions - -// These structs' fields, and the sizeof them, are private implementation -// details that aren't guaranteed to be stable across Wuffs versions. -// -// See https://en.wikipedia.org/wiki/Opaque_pointer#C - -#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) - -struct wuffs_bmp__decoder__struct { - // Do not access the private_impl's or private_data's fields directly. There - // is no API/ABI compatibility or safety guarantee if you do so. Instead, use - // the wuffs_foo__bar__baz functions. - // - // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct - // can be stack allocated when WUFFS_IMPLEMENTATION is defined. - - struct { - uint32_t magic; - uint32_t active_coroutine; - wuffs_base__vtable vtable_for__wuffs_base__image_decoder; - wuffs_base__vtable null_vtable; - - uint32_t f_width; - uint32_t f_height; - uint8_t f_call_sequence; - bool f_top_down; - uint32_t f_pad_per_row; - uint32_t f_src_pixfmt; - uint32_t f_io_redirect_fourcc; - uint64_t f_io_redirect_pos; - uint64_t f_frame_config_io_position; - uint32_t f_bitmap_info_len; - uint32_t f_padding; - uint32_t f_bits_per_pixel; - uint32_t f_compression; - uint32_t f_channel_masks[4]; - uint8_t f_channel_shifts[4]; - uint8_t f_channel_num_bits[4]; - uint32_t f_dst_x; - uint32_t f_dst_y; - uint32_t f_dst_y_inc; - uint32_t f_pending_pad; - uint32_t f_rle_state; - uint32_t f_rle_length; - uint8_t f_rle_delta_x; - bool f_rle_padded; - wuffs_base__pixel_swizzler f_swizzler; - - uint32_t p_decode_image_config[1]; - uint32_t p_do_decode_image_config[1]; - uint32_t p_decode_frame_config[1]; - uint32_t p_do_decode_frame_config[1]; - uint32_t p_decode_frame[1]; - uint32_t p_do_decode_frame[1]; - uint32_t p_tell_me_more[1]; - uint32_t p_read_palette[1]; - } private_impl; - - struct { - uint8_t f_scratch[2048]; - uint8_t f_src_palette[1024]; - - struct { - uint64_t scratch; - } s_do_decode_image_config[1]; - struct { - uint64_t scratch; - } s_do_decode_frame[1]; - struct { - uint32_t v_i; - uint64_t scratch; - } s_read_palette[1]; - } private_data; - -#ifdef __cplusplus -#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR) - using unique_ptr = std::unique_ptr; - - // On failure, the alloc_etc functions return nullptr. They don't throw. - - static inline unique_ptr - alloc() { - return unique_ptr(wuffs_bmp__decoder__alloc(), &free); - } - - static inline wuffs_base__image_decoder::unique_ptr - alloc_as__wuffs_base__image_decoder() { - return wuffs_base__image_decoder::unique_ptr( - wuffs_bmp__decoder__alloc_as__wuffs_base__image_decoder(), &free); - } -#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR) - -#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) - // Disallow constructing or copying an object via standard C++ mechanisms, - // e.g. the "new" operator, as this struct is intentionally opaque. Its total - // size and field layout is not part of the public, stable, memory-safe API. - // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and - // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as - // their first argument) rather than tweaking bar.private_impl.qux fields. - // - // In C, we can just leave wuffs_foo__bar as an incomplete type (unless - // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in - // order to provide convenience methods. These forward on "this", so that you - // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)". - wuffs_bmp__decoder__struct() = delete; - wuffs_bmp__decoder__struct(const wuffs_bmp__decoder__struct&) = delete; - wuffs_bmp__decoder__struct& operator=( - const wuffs_bmp__decoder__struct&) = delete; -#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) - -#if !defined(WUFFS_IMPLEMENTATION) - // As above, the size of the struct is not part of the public API, and unless - // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap - // allocated, not stack allocated. Its size is not intended to be known at - // compile time, but it is unfortunately divulged as a side effect of - // defining C++ convenience methods. Use "sizeof__T()", calling the function, - // instead of "sizeof T", invoking the operator. To make the two values - // different, so that passing the latter will be rejected by the initialize - // function, we add an arbitrary amount of dead weight. - uint8_t dead_weight[123000000]; // 123 MB. -#endif // !defined(WUFFS_IMPLEMENTATION) - - inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT - initialize( - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options) { - return wuffs_bmp__decoder__initialize( - this, sizeof_star_self, wuffs_version, options); - } - - inline wuffs_base__image_decoder* - upcast_as__wuffs_base__image_decoder() { - return (wuffs_base__image_decoder*)this; - } - - inline wuffs_base__status - set_quirk( - uint32_t a_key, - uint64_t a_value) { - return wuffs_bmp__decoder__set_quirk(this, a_key, a_value); - } - - inline wuffs_base__status - decode_image_config( - wuffs_base__image_config* a_dst, - wuffs_base__io_buffer* a_src) { - return wuffs_bmp__decoder__decode_image_config(this, a_dst, a_src); - } - - inline wuffs_base__status - decode_frame_config( - wuffs_base__frame_config* a_dst, - wuffs_base__io_buffer* a_src) { - return wuffs_bmp__decoder__decode_frame_config(this, a_dst, a_src); - } - - inline wuffs_base__status - decode_frame( - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__pixel_blend a_blend, - wuffs_base__slice_u8 a_workbuf, - wuffs_base__decode_frame_options* a_opts) { - return wuffs_bmp__decoder__decode_frame(this, a_dst, a_src, a_blend, a_workbuf, a_opts); - } - - inline wuffs_base__rect_ie_u32 - frame_dirty_rect() const { - return wuffs_bmp__decoder__frame_dirty_rect(this); - } - - inline uint32_t - num_animation_loops() const { - return wuffs_bmp__decoder__num_animation_loops(this); - } - - inline uint64_t - num_decoded_frame_configs() const { - return wuffs_bmp__decoder__num_decoded_frame_configs(this); - } - - inline uint64_t - num_decoded_frames() const { - return wuffs_bmp__decoder__num_decoded_frames(this); - } - - inline wuffs_base__status - restart_frame( - uint64_t a_index, - uint64_t a_io_position) { - return wuffs_bmp__decoder__restart_frame(this, a_index, a_io_position); - } - - inline wuffs_base__empty_struct - set_report_metadata( - uint32_t a_fourcc, - bool a_report) { - return wuffs_bmp__decoder__set_report_metadata(this, a_fourcc, a_report); - } - - inline wuffs_base__status - tell_me_more( - wuffs_base__io_buffer* a_dst, - wuffs_base__more_information* a_minfo, - wuffs_base__io_buffer* a_src) { - return wuffs_bmp__decoder__tell_me_more(this, a_dst, a_minfo, a_src); - } - - inline wuffs_base__range_ii_u64 - workbuf_len() const { - return wuffs_bmp__decoder__workbuf_len(this); - } - -#endif // __cplusplus -}; // struct wuffs_bmp__decoder__struct - -#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) - -#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BMP) || defined(WUFFS_NONMONOLITHIC) - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BZIP2) || defined(WUFFS_NONMONOLITHIC) - -// ---------------- Status Codes - -extern const char wuffs_bzip2__error__bad_huffman_code_over_subscribed[]; -extern const char wuffs_bzip2__error__bad_huffman_code_under_subscribed[]; -extern const char wuffs_bzip2__error__bad_block_header[]; -extern const char wuffs_bzip2__error__bad_block_length[]; -extern const char wuffs_bzip2__error__bad_checksum[]; -extern const char wuffs_bzip2__error__bad_header[]; -extern const char wuffs_bzip2__error__bad_number_of_sections[]; -extern const char wuffs_bzip2__error__truncated_input[]; -extern const char wuffs_bzip2__error__unsupported_block_randomization[]; - -// ---------------- Public Consts - -#define WUFFS_BZIP2__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0 - -// ---------------- Struct Declarations - -typedef struct wuffs_bzip2__decoder__struct wuffs_bzip2__decoder; - -#ifdef __cplusplus -extern "C" { -#endif - -// ---------------- Public Initializer Prototypes - -// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self, -// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)". -// -// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version. -// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options. - -wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT -wuffs_bzip2__decoder__initialize( - wuffs_bzip2__decoder* self, - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options); - -size_t -sizeof__wuffs_bzip2__decoder(); - -// ---------------- Allocs - -// These functions allocate and initialize Wuffs structs. They return NULL if -// memory allocation fails. If they return non-NULL, there is no need to call -// wuffs_foo__bar__initialize, but the caller is responsible for eventually -// calling free on the returned pointer. That pointer is effectively a C++ -// std::unique_ptr. - -wuffs_bzip2__decoder* -wuffs_bzip2__decoder__alloc(); - -static inline wuffs_base__io_transformer* -wuffs_bzip2__decoder__alloc_as__wuffs_base__io_transformer() { - return (wuffs_base__io_transformer*)(wuffs_bzip2__decoder__alloc()); -} - -// ---------------- Upcasts - -static inline wuffs_base__io_transformer* -wuffs_bzip2__decoder__upcast_as__wuffs_base__io_transformer( - wuffs_bzip2__decoder* p) { - return (wuffs_base__io_transformer*)p; -} - -// ---------------- Public Function Prototypes - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_bzip2__decoder__set_quirk( - wuffs_bzip2__decoder* self, - uint32_t a_key, - uint64_t a_value); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 -wuffs_bzip2__decoder__workbuf_len( - const wuffs_bzip2__decoder* self); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_bzip2__decoder__transform_io( - wuffs_bzip2__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__slice_u8 a_workbuf); - -#ifdef __cplusplus -} // extern "C" -#endif - -// ---------------- Struct Definitions - -// These structs' fields, and the sizeof them, are private implementation -// details that aren't guaranteed to be stable across Wuffs versions. -// -// See https://en.wikipedia.org/wiki/Opaque_pointer#C - -#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) - -struct wuffs_bzip2__decoder__struct { - // Do not access the private_impl's or private_data's fields directly. There - // is no API/ABI compatibility or safety guarantee if you do so. Instead, use - // the wuffs_foo__bar__baz functions. - // - // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct - // can be stack allocated when WUFFS_IMPLEMENTATION is defined. - - struct { - uint32_t magic; - uint32_t active_coroutine; - wuffs_base__vtable vtable_for__wuffs_base__io_transformer; - wuffs_base__vtable null_vtable; - - uint32_t f_bits; - uint32_t f_n_bits; - uint32_t f_max_incl_block_size; - uint32_t f_block_size; - bool f_decode_huffman_finished; - uint8_t f_decode_huffman_which; - uint32_t f_decode_huffman_ticks; - uint32_t f_decode_huffman_section; - uint32_t f_decode_huffman_run_shift; - uint32_t f_flush_pointer; - uint32_t f_flush_repeat_count; - uint8_t f_flush_prev; - bool f_ignore_checksum; - uint32_t f_final_checksum_have; - uint32_t f_block_checksum_have; - uint32_t f_block_checksum_want; - uint32_t f_original_pointer; - uint32_t f_num_symbols; - uint32_t f_num_huffman_codes; - uint32_t f_num_sections; - uint32_t f_code_lengths_bitmask; - - uint32_t p_transform_io[1]; - uint32_t p_do_transform_io[1]; - uint32_t p_prepare_block[1]; - uint32_t p_read_code_lengths[1]; - uint32_t p_flush_slow[1]; - uint32_t p_decode_huffman_slow[1]; - } private_impl; - - struct { - uint32_t f_scratch; - uint32_t f_letter_counts[256]; - uint8_t f_presence[256]; - uint8_t f_mtft[256]; - uint8_t f_huffman_selectors[32768]; - uint16_t f_huffman_trees[6][257][2]; - uint16_t f_huffman_tables[6][256]; - uint32_t f_bwt[1048576]; - - struct { - uint32_t v_i; - uint64_t v_tag; - uint32_t v_final_checksum_want; - } s_do_transform_io[1]; - struct { - uint32_t v_i; - uint32_t v_selector; - } s_prepare_block[1]; - struct { - uint32_t v_i; - uint32_t v_code_length; - } s_read_code_lengths[1]; - struct { - uint32_t v_flush_pointer; - uint32_t v_flush_repeat_count; - uint8_t v_flush_prev; - uint32_t v_block_checksum_have; - uint32_t v_block_size; - uint8_t v_curr; - uint64_t scratch; - } s_flush_slow[1]; - struct { - uint32_t v_node_index; - } s_decode_huffman_slow[1]; - } private_data; - -#ifdef __cplusplus -#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR) - using unique_ptr = std::unique_ptr; - - // On failure, the alloc_etc functions return nullptr. They don't throw. - - static inline unique_ptr - alloc() { - return unique_ptr(wuffs_bzip2__decoder__alloc(), &free); - } - - static inline wuffs_base__io_transformer::unique_ptr - alloc_as__wuffs_base__io_transformer() { - return wuffs_base__io_transformer::unique_ptr( - wuffs_bzip2__decoder__alloc_as__wuffs_base__io_transformer(), &free); - } -#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR) - -#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) - // Disallow constructing or copying an object via standard C++ mechanisms, - // e.g. the "new" operator, as this struct is intentionally opaque. Its total - // size and field layout is not part of the public, stable, memory-safe API. - // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and - // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as - // their first argument) rather than tweaking bar.private_impl.qux fields. - // - // In C, we can just leave wuffs_foo__bar as an incomplete type (unless - // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in - // order to provide convenience methods. These forward on "this", so that you - // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)". - wuffs_bzip2__decoder__struct() = delete; - wuffs_bzip2__decoder__struct(const wuffs_bzip2__decoder__struct&) = delete; - wuffs_bzip2__decoder__struct& operator=( - const wuffs_bzip2__decoder__struct&) = delete; -#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) - -#if !defined(WUFFS_IMPLEMENTATION) - // As above, the size of the struct is not part of the public API, and unless - // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap - // allocated, not stack allocated. Its size is not intended to be known at - // compile time, but it is unfortunately divulged as a side effect of - // defining C++ convenience methods. Use "sizeof__T()", calling the function, - // instead of "sizeof T", invoking the operator. To make the two values - // different, so that passing the latter will be rejected by the initialize - // function, we add an arbitrary amount of dead weight. - uint8_t dead_weight[123000000]; // 123 MB. -#endif // !defined(WUFFS_IMPLEMENTATION) - - inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT - initialize( - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options) { - return wuffs_bzip2__decoder__initialize( - this, sizeof_star_self, wuffs_version, options); - } - - inline wuffs_base__io_transformer* - upcast_as__wuffs_base__io_transformer() { - return (wuffs_base__io_transformer*)this; - } - - inline wuffs_base__status - set_quirk( - uint32_t a_key, - uint64_t a_value) { - return wuffs_bzip2__decoder__set_quirk(this, a_key, a_value); - } - - inline wuffs_base__range_ii_u64 - workbuf_len() const { - return wuffs_bzip2__decoder__workbuf_len(this); - } - - inline wuffs_base__status - transform_io( - wuffs_base__io_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__slice_u8 a_workbuf) { - return wuffs_bzip2__decoder__transform_io(this, a_dst, a_src, a_workbuf); - } - -#endif // __cplusplus -}; // struct wuffs_bzip2__decoder__struct - -#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) - -#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BZIP2) || defined(WUFFS_NONMONOLITHIC) - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__CBOR) || defined(WUFFS_NONMONOLITHIC) - -// ---------------- Status Codes - -extern const char wuffs_cbor__error__bad_input[]; -extern const char wuffs_cbor__error__unsupported_recursion_depth[]; - -// ---------------- Public Consts - -#define WUFFS_CBOR__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0 - -#define WUFFS_CBOR__DECODER_DEPTH_MAX_INCL 1024 - -#define WUFFS_CBOR__DECODER_DST_TOKEN_BUFFER_LENGTH_MIN_INCL 2 - -#define WUFFS_CBOR__DECODER_SRC_IO_BUFFER_LENGTH_MIN_INCL 9 - -#define WUFFS_CBOR__TOKEN_VALUE_MAJOR 787997 - -#define WUFFS_CBOR__TOKEN_VALUE_MINOR__DETAIL_MASK 262143 - -#define WUFFS_CBOR__TOKEN_VALUE_MINOR__MINUS_1_MINUS_X 16777216 - -#define WUFFS_CBOR__TOKEN_VALUE_MINOR__SIMPLE_VALUE 8388608 - -#define WUFFS_CBOR__TOKEN_VALUE_MINOR__TAG 4194304 - -// ---------------- Struct Declarations - -typedef struct wuffs_cbor__decoder__struct wuffs_cbor__decoder; - -#ifdef __cplusplus -extern "C" { -#endif - -// ---------------- Public Initializer Prototypes - -// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self, -// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)". -// -// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version. -// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options. - -wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT -wuffs_cbor__decoder__initialize( - wuffs_cbor__decoder* self, - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options); - -size_t -sizeof__wuffs_cbor__decoder(); - -// ---------------- Allocs - -// These functions allocate and initialize Wuffs structs. They return NULL if -// memory allocation fails. If they return non-NULL, there is no need to call -// wuffs_foo__bar__initialize, but the caller is responsible for eventually -// calling free on the returned pointer. That pointer is effectively a C++ -// std::unique_ptr. - -wuffs_cbor__decoder* -wuffs_cbor__decoder__alloc(); - -static inline wuffs_base__token_decoder* -wuffs_cbor__decoder__alloc_as__wuffs_base__token_decoder() { - return (wuffs_base__token_decoder*)(wuffs_cbor__decoder__alloc()); -} - -// ---------------- Upcasts - -static inline wuffs_base__token_decoder* -wuffs_cbor__decoder__upcast_as__wuffs_base__token_decoder( - wuffs_cbor__decoder* p) { - return (wuffs_base__token_decoder*)p; -} - -// ---------------- Public Function Prototypes - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_cbor__decoder__set_quirk( - wuffs_cbor__decoder* self, - uint32_t a_key, - uint64_t a_value); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 -wuffs_cbor__decoder__workbuf_len( - const wuffs_cbor__decoder* self); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_cbor__decoder__decode_tokens( - wuffs_cbor__decoder* self, - wuffs_base__token_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__slice_u8 a_workbuf); - -#ifdef __cplusplus -} // extern "C" -#endif - -// ---------------- Struct Definitions - -// These structs' fields, and the sizeof them, are private implementation -// details that aren't guaranteed to be stable across Wuffs versions. -// -// See https://en.wikipedia.org/wiki/Opaque_pointer#C - -#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) - -struct wuffs_cbor__decoder__struct { - // Do not access the private_impl's or private_data's fields directly. There - // is no API/ABI compatibility or safety guarantee if you do so. Instead, use - // the wuffs_foo__bar__baz functions. - // - // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct - // can be stack allocated when WUFFS_IMPLEMENTATION is defined. - - struct { - uint32_t magic; - uint32_t active_coroutine; - wuffs_base__vtable vtable_for__wuffs_base__token_decoder; - wuffs_base__vtable null_vtable; - - bool f_end_of_data; - - uint32_t p_decode_tokens[1]; - } private_impl; - - struct { - uint32_t f_stack[64]; - uint64_t f_container_num_remaining[1024]; - - struct { - uint64_t v_string_length; - uint32_t v_depth; - bool v_tagged; - uint8_t v_indefinite_string_major_type; - } s_decode_tokens[1]; - } private_data; - -#ifdef __cplusplus -#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR) - using unique_ptr = std::unique_ptr; - - // On failure, the alloc_etc functions return nullptr. They don't throw. - - static inline unique_ptr - alloc() { - return unique_ptr(wuffs_cbor__decoder__alloc(), &free); - } - - static inline wuffs_base__token_decoder::unique_ptr - alloc_as__wuffs_base__token_decoder() { - return wuffs_base__token_decoder::unique_ptr( - wuffs_cbor__decoder__alloc_as__wuffs_base__token_decoder(), &free); - } -#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR) - -#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) - // Disallow constructing or copying an object via standard C++ mechanisms, - // e.g. the "new" operator, as this struct is intentionally opaque. Its total - // size and field layout is not part of the public, stable, memory-safe API. - // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and - // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as - // their first argument) rather than tweaking bar.private_impl.qux fields. - // - // In C, we can just leave wuffs_foo__bar as an incomplete type (unless - // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in - // order to provide convenience methods. These forward on "this", so that you - // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)". - wuffs_cbor__decoder__struct() = delete; - wuffs_cbor__decoder__struct(const wuffs_cbor__decoder__struct&) = delete; - wuffs_cbor__decoder__struct& operator=( - const wuffs_cbor__decoder__struct&) = delete; -#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) - -#if !defined(WUFFS_IMPLEMENTATION) - // As above, the size of the struct is not part of the public API, and unless - // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap - // allocated, not stack allocated. Its size is not intended to be known at - // compile time, but it is unfortunately divulged as a side effect of - // defining C++ convenience methods. Use "sizeof__T()", calling the function, - // instead of "sizeof T", invoking the operator. To make the two values - // different, so that passing the latter will be rejected by the initialize - // function, we add an arbitrary amount of dead weight. - uint8_t dead_weight[123000000]; // 123 MB. -#endif // !defined(WUFFS_IMPLEMENTATION) - - inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT - initialize( - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options) { - return wuffs_cbor__decoder__initialize( - this, sizeof_star_self, wuffs_version, options); - } - - inline wuffs_base__token_decoder* - upcast_as__wuffs_base__token_decoder() { - return (wuffs_base__token_decoder*)this; - } - - inline wuffs_base__status - set_quirk( - uint32_t a_key, - uint64_t a_value) { - return wuffs_cbor__decoder__set_quirk(this, a_key, a_value); - } - - inline wuffs_base__range_ii_u64 - workbuf_len() const { - return wuffs_cbor__decoder__workbuf_len(this); - } - - inline wuffs_base__status - decode_tokens( - wuffs_base__token_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__slice_u8 a_workbuf) { - return wuffs_cbor__decoder__decode_tokens(this, a_dst, a_src, a_workbuf); - } - -#endif // __cplusplus -}; // struct wuffs_cbor__decoder__struct - -#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) - -#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__CBOR) || defined(WUFFS_NONMONOLITHIC) - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__CRC32) || defined(WUFFS_NONMONOLITHIC) - -// ---------------- Status Codes - -// ---------------- Public Consts - -// ---------------- Struct Declarations - -typedef struct wuffs_crc32__ieee_hasher__struct wuffs_crc32__ieee_hasher; - -#ifdef __cplusplus -extern "C" { -#endif - -// ---------------- Public Initializer Prototypes - -// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self, -// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)". -// -// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version. -// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options. - -wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT -wuffs_crc32__ieee_hasher__initialize( - wuffs_crc32__ieee_hasher* self, - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options); - -size_t -sizeof__wuffs_crc32__ieee_hasher(); - -// ---------------- Allocs - -// These functions allocate and initialize Wuffs structs. They return NULL if -// memory allocation fails. If they return non-NULL, there is no need to call -// wuffs_foo__bar__initialize, but the caller is responsible for eventually -// calling free on the returned pointer. That pointer is effectively a C++ -// std::unique_ptr. - -wuffs_crc32__ieee_hasher* -wuffs_crc32__ieee_hasher__alloc(); - -static inline wuffs_base__hasher_u32* -wuffs_crc32__ieee_hasher__alloc_as__wuffs_base__hasher_u32() { - return (wuffs_base__hasher_u32*)(wuffs_crc32__ieee_hasher__alloc()); -} - -// ---------------- Upcasts - -static inline wuffs_base__hasher_u32* -wuffs_crc32__ieee_hasher__upcast_as__wuffs_base__hasher_u32( - wuffs_crc32__ieee_hasher* p) { - return (wuffs_base__hasher_u32*)p; -} - -// ---------------- Public Function Prototypes - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_crc32__ieee_hasher__set_quirk( - wuffs_crc32__ieee_hasher* self, - uint32_t a_key, - uint64_t a_value); - -WUFFS_BASE__MAYBE_STATIC uint32_t -wuffs_crc32__ieee_hasher__update_u32( - wuffs_crc32__ieee_hasher* self, - wuffs_base__slice_u8 a_x); - -#ifdef __cplusplus -} // extern "C" -#endif - -// ---------------- Struct Definitions - -// These structs' fields, and the sizeof them, are private implementation -// details that aren't guaranteed to be stable across Wuffs versions. -// -// See https://en.wikipedia.org/wiki/Opaque_pointer#C - -#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) - -struct wuffs_crc32__ieee_hasher__struct { - // Do not access the private_impl's or private_data's fields directly. There - // is no API/ABI compatibility or safety guarantee if you do so. Instead, use - // the wuffs_foo__bar__baz functions. - // - // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct - // can be stack allocated when WUFFS_IMPLEMENTATION is defined. - - struct { - uint32_t magic; - uint32_t active_coroutine; - wuffs_base__vtable vtable_for__wuffs_base__hasher_u32; - wuffs_base__vtable null_vtable; - - uint32_t f_state; - - wuffs_base__empty_struct (*choosy_up)( - wuffs_crc32__ieee_hasher* self, - wuffs_base__slice_u8 a_x); - } private_impl; - -#ifdef __cplusplus -#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR) - using unique_ptr = std::unique_ptr; - - // On failure, the alloc_etc functions return nullptr. They don't throw. - - static inline unique_ptr - alloc() { - return unique_ptr(wuffs_crc32__ieee_hasher__alloc(), &free); - } - - static inline wuffs_base__hasher_u32::unique_ptr - alloc_as__wuffs_base__hasher_u32() { - return wuffs_base__hasher_u32::unique_ptr( - wuffs_crc32__ieee_hasher__alloc_as__wuffs_base__hasher_u32(), &free); - } -#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR) - -#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) - // Disallow constructing or copying an object via standard C++ mechanisms, - // e.g. the "new" operator, as this struct is intentionally opaque. Its total - // size and field layout is not part of the public, stable, memory-safe API. - // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and - // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as - // their first argument) rather than tweaking bar.private_impl.qux fields. - // - // In C, we can just leave wuffs_foo__bar as an incomplete type (unless - // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in - // order to provide convenience methods. These forward on "this", so that you - // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)". - wuffs_crc32__ieee_hasher__struct() = delete; - wuffs_crc32__ieee_hasher__struct(const wuffs_crc32__ieee_hasher__struct&) = delete; - wuffs_crc32__ieee_hasher__struct& operator=( - const wuffs_crc32__ieee_hasher__struct&) = delete; -#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) - -#if !defined(WUFFS_IMPLEMENTATION) - // As above, the size of the struct is not part of the public API, and unless - // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap - // allocated, not stack allocated. Its size is not intended to be known at - // compile time, but it is unfortunately divulged as a side effect of - // defining C++ convenience methods. Use "sizeof__T()", calling the function, - // instead of "sizeof T", invoking the operator. To make the two values - // different, so that passing the latter will be rejected by the initialize - // function, we add an arbitrary amount of dead weight. - uint8_t dead_weight[123000000]; // 123 MB. -#endif // !defined(WUFFS_IMPLEMENTATION) - - inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT - initialize( - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options) { - return wuffs_crc32__ieee_hasher__initialize( - this, sizeof_star_self, wuffs_version, options); - } - - inline wuffs_base__hasher_u32* - upcast_as__wuffs_base__hasher_u32() { - return (wuffs_base__hasher_u32*)this; - } - - inline wuffs_base__status - set_quirk( - uint32_t a_key, - uint64_t a_value) { - return wuffs_crc32__ieee_hasher__set_quirk(this, a_key, a_value); - } - - inline uint32_t - update_u32( - wuffs_base__slice_u8 a_x) { - return wuffs_crc32__ieee_hasher__update_u32(this, a_x); - } - -#endif // __cplusplus -}; // struct wuffs_crc32__ieee_hasher__struct - -#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) - -#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__CRC32) || defined(WUFFS_NONMONOLITHIC) - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__DEFLATE) || defined(WUFFS_NONMONOLITHIC) - -// ---------------- Status Codes - -extern const char wuffs_deflate__error__bad_huffman_code_over_subscribed[]; -extern const char wuffs_deflate__error__bad_huffman_code_under_subscribed[]; -extern const char wuffs_deflate__error__bad_huffman_code_length_count[]; -extern const char wuffs_deflate__error__bad_huffman_code_length_repetition[]; -extern const char wuffs_deflate__error__bad_huffman_code[]; -extern const char wuffs_deflate__error__bad_huffman_minimum_code_length[]; -extern const char wuffs_deflate__error__bad_block[]; -extern const char wuffs_deflate__error__bad_distance[]; -extern const char wuffs_deflate__error__bad_distance_code_count[]; -extern const char wuffs_deflate__error__bad_literal_length_code_count[]; -extern const char wuffs_deflate__error__inconsistent_stored_block_length[]; -extern const char wuffs_deflate__error__missing_end_of_block_code[]; -extern const char wuffs_deflate__error__no_huffman_codes[]; -extern const char wuffs_deflate__error__truncated_input[]; - -// ---------------- Public Consts - -#define WUFFS_DEFLATE__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 1 - -// ---------------- Struct Declarations - -typedef struct wuffs_deflate__decoder__struct wuffs_deflate__decoder; - -#ifdef __cplusplus -extern "C" { -#endif - -// ---------------- Public Initializer Prototypes - -// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self, -// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)". -// -// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version. -// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options. - -wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT -wuffs_deflate__decoder__initialize( - wuffs_deflate__decoder* self, - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options); - -size_t -sizeof__wuffs_deflate__decoder(); - -// ---------------- Allocs - -// These functions allocate and initialize Wuffs structs. They return NULL if -// memory allocation fails. If they return non-NULL, there is no need to call -// wuffs_foo__bar__initialize, but the caller is responsible for eventually -// calling free on the returned pointer. That pointer is effectively a C++ -// std::unique_ptr. - -wuffs_deflate__decoder* -wuffs_deflate__decoder__alloc(); - -static inline wuffs_base__io_transformer* -wuffs_deflate__decoder__alloc_as__wuffs_base__io_transformer() { - return (wuffs_base__io_transformer*)(wuffs_deflate__decoder__alloc()); -} - -// ---------------- Upcasts - -static inline wuffs_base__io_transformer* -wuffs_deflate__decoder__upcast_as__wuffs_base__io_transformer( - wuffs_deflate__decoder* p) { - return (wuffs_base__io_transformer*)p; -} - -// ---------------- Public Function Prototypes - -WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct -wuffs_deflate__decoder__add_history( - wuffs_deflate__decoder* self, - wuffs_base__slice_u8 a_hist); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_deflate__decoder__set_quirk( - wuffs_deflate__decoder* self, - uint32_t a_key, - uint64_t a_value); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 -wuffs_deflate__decoder__workbuf_len( - const wuffs_deflate__decoder* self); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_deflate__decoder__transform_io( - wuffs_deflate__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__slice_u8 a_workbuf); - -#ifdef __cplusplus -} // extern "C" -#endif - -// ---------------- Struct Definitions - -// These structs' fields, and the sizeof them, are private implementation -// details that aren't guaranteed to be stable across Wuffs versions. -// -// See https://en.wikipedia.org/wiki/Opaque_pointer#C - -#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) - -struct wuffs_deflate__decoder__struct { - // Do not access the private_impl's or private_data's fields directly. There - // is no API/ABI compatibility or safety guarantee if you do so. Instead, use - // the wuffs_foo__bar__baz functions. - // - // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct - // can be stack allocated when WUFFS_IMPLEMENTATION is defined. - - struct { - uint32_t magic; - uint32_t active_coroutine; - wuffs_base__vtable vtable_for__wuffs_base__io_transformer; - wuffs_base__vtable null_vtable; - - uint32_t f_bits; - uint32_t f_n_bits; - uint64_t f_transformed_history_count; - uint32_t f_history_index; - uint32_t f_n_huffs_bits[2]; - bool f_end_of_block; - - uint32_t p_transform_io[1]; - uint32_t p_do_transform_io[1]; - uint32_t p_decode_blocks[1]; - uint32_t p_decode_uncompressed[1]; - uint32_t p_init_dynamic_huffman[1]; - wuffs_base__status (*choosy_decode_huffman_fast64)( - wuffs_deflate__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__io_buffer* a_src); - uint32_t p_decode_huffman_slow[1]; - } private_impl; - - struct { - uint32_t f_huffs[2][1024]; - uint8_t f_history[33025]; - uint8_t f_code_lengths[320]; - - struct { - uint32_t v_final; - } s_decode_blocks[1]; - struct { - uint32_t v_length; - uint64_t scratch; - } s_decode_uncompressed[1]; - struct { - uint32_t v_bits; - uint32_t v_n_bits; - uint32_t v_n_lit; - uint32_t v_n_dist; - uint32_t v_n_clen; - uint32_t v_i; - uint32_t v_mask; - uint32_t v_n_extra_bits; - uint8_t v_rep_symbol; - uint32_t v_rep_count; - } s_init_dynamic_huffman[1]; - struct { - uint32_t v_bits; - uint32_t v_n_bits; - uint32_t v_table_entry_n_bits; - uint32_t v_lmask; - uint32_t v_dmask; - uint32_t v_redir_top; - uint32_t v_redir_mask; - uint32_t v_length; - uint32_t v_dist_minus_1; - uint64_t scratch; - } s_decode_huffman_slow[1]; - } private_data; - -#ifdef __cplusplus -#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR) - using unique_ptr = std::unique_ptr; - - // On failure, the alloc_etc functions return nullptr. They don't throw. - - static inline unique_ptr - alloc() { - return unique_ptr(wuffs_deflate__decoder__alloc(), &free); - } - - static inline wuffs_base__io_transformer::unique_ptr - alloc_as__wuffs_base__io_transformer() { - return wuffs_base__io_transformer::unique_ptr( - wuffs_deflate__decoder__alloc_as__wuffs_base__io_transformer(), &free); - } -#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR) - -#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) - // Disallow constructing or copying an object via standard C++ mechanisms, - // e.g. the "new" operator, as this struct is intentionally opaque. Its total - // size and field layout is not part of the public, stable, memory-safe API. - // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and - // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as - // their first argument) rather than tweaking bar.private_impl.qux fields. - // - // In C, we can just leave wuffs_foo__bar as an incomplete type (unless - // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in - // order to provide convenience methods. These forward on "this", so that you - // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)". - wuffs_deflate__decoder__struct() = delete; - wuffs_deflate__decoder__struct(const wuffs_deflate__decoder__struct&) = delete; - wuffs_deflate__decoder__struct& operator=( - const wuffs_deflate__decoder__struct&) = delete; -#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) - -#if !defined(WUFFS_IMPLEMENTATION) - // As above, the size of the struct is not part of the public API, and unless - // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap - // allocated, not stack allocated. Its size is not intended to be known at - // compile time, but it is unfortunately divulged as a side effect of - // defining C++ convenience methods. Use "sizeof__T()", calling the function, - // instead of "sizeof T", invoking the operator. To make the two values - // different, so that passing the latter will be rejected by the initialize - // function, we add an arbitrary amount of dead weight. - uint8_t dead_weight[123000000]; // 123 MB. -#endif // !defined(WUFFS_IMPLEMENTATION) - - inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT - initialize( - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options) { - return wuffs_deflate__decoder__initialize( - this, sizeof_star_self, wuffs_version, options); - } - - inline wuffs_base__io_transformer* - upcast_as__wuffs_base__io_transformer() { - return (wuffs_base__io_transformer*)this; - } - - inline wuffs_base__empty_struct - add_history( - wuffs_base__slice_u8 a_hist) { - return wuffs_deflate__decoder__add_history(this, a_hist); - } - - inline wuffs_base__status - set_quirk( - uint32_t a_key, - uint64_t a_value) { - return wuffs_deflate__decoder__set_quirk(this, a_key, a_value); - } - - inline wuffs_base__range_ii_u64 - workbuf_len() const { - return wuffs_deflate__decoder__workbuf_len(this); - } - - inline wuffs_base__status - transform_io( - wuffs_base__io_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__slice_u8 a_workbuf) { - return wuffs_deflate__decoder__transform_io(this, a_dst, a_src, a_workbuf); - } - -#endif // __cplusplus -}; // struct wuffs_deflate__decoder__struct - -#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) - -#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__DEFLATE) || defined(WUFFS_NONMONOLITHIC) - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__LZW) || defined(WUFFS_NONMONOLITHIC) - -// ---------------- Status Codes - -extern const char wuffs_lzw__error__bad_code[]; -extern const char wuffs_lzw__error__truncated_input[]; - -// ---------------- Public Consts - -#define WUFFS_LZW__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0 - -#define WUFFS_LZW__QUIRK_LITERAL_WIDTH_PLUS_ONE 1348378624 - -// ---------------- Struct Declarations - -typedef struct wuffs_lzw__decoder__struct wuffs_lzw__decoder; - -#ifdef __cplusplus -extern "C" { -#endif - -// ---------------- Public Initializer Prototypes - -// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self, -// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)". -// -// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version. -// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options. - -wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT -wuffs_lzw__decoder__initialize( - wuffs_lzw__decoder* self, - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options); - -size_t -sizeof__wuffs_lzw__decoder(); - -// ---------------- Allocs - -// These functions allocate and initialize Wuffs structs. They return NULL if -// memory allocation fails. If they return non-NULL, there is no need to call -// wuffs_foo__bar__initialize, but the caller is responsible for eventually -// calling free on the returned pointer. That pointer is effectively a C++ -// std::unique_ptr. - -wuffs_lzw__decoder* -wuffs_lzw__decoder__alloc(); - -static inline wuffs_base__io_transformer* -wuffs_lzw__decoder__alloc_as__wuffs_base__io_transformer() { - return (wuffs_base__io_transformer*)(wuffs_lzw__decoder__alloc()); -} - -// ---------------- Upcasts - -static inline wuffs_base__io_transformer* -wuffs_lzw__decoder__upcast_as__wuffs_base__io_transformer( - wuffs_lzw__decoder* p) { - return (wuffs_base__io_transformer*)p; -} - -// ---------------- Public Function Prototypes - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_lzw__decoder__set_quirk( - wuffs_lzw__decoder* self, - uint32_t a_key, - uint64_t a_value); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 -wuffs_lzw__decoder__workbuf_len( - const wuffs_lzw__decoder* self); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_lzw__decoder__transform_io( - wuffs_lzw__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__slice_u8 a_workbuf); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__slice_u8 -wuffs_lzw__decoder__flush( - wuffs_lzw__decoder* self); - -#ifdef __cplusplus -} // extern "C" -#endif - -// ---------------- Struct Definitions - -// These structs' fields, and the sizeof them, are private implementation -// details that aren't guaranteed to be stable across Wuffs versions. -// -// See https://en.wikipedia.org/wiki/Opaque_pointer#C - -#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) - -struct wuffs_lzw__decoder__struct { - // Do not access the private_impl's or private_data's fields directly. There - // is no API/ABI compatibility or safety guarantee if you do so. Instead, use - // the wuffs_foo__bar__baz functions. - // - // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct - // can be stack allocated when WUFFS_IMPLEMENTATION is defined. - - struct { - uint32_t magic; - uint32_t active_coroutine; - wuffs_base__vtable vtable_for__wuffs_base__io_transformer; - wuffs_base__vtable null_vtable; - - uint32_t f_pending_literal_width_plus_one; - uint32_t f_literal_width; - uint32_t f_clear_code; - uint32_t f_end_code; - uint32_t f_save_code; - uint32_t f_prev_code; - uint32_t f_width; - uint32_t f_bits; - uint32_t f_n_bits; - uint32_t f_output_ri; - uint32_t f_output_wi; - uint32_t f_read_from_return_value; - uint16_t f_prefixes[4096]; - - uint32_t p_transform_io[1]; - uint32_t p_write_to[1]; - } private_impl; - - struct { - uint8_t f_suffixes[4096][8]; - uint16_t f_lm1s[4096]; - uint8_t f_output[8199]; - } private_data; - -#ifdef __cplusplus -#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR) - using unique_ptr = std::unique_ptr; - - // On failure, the alloc_etc functions return nullptr. They don't throw. - - static inline unique_ptr - alloc() { - return unique_ptr(wuffs_lzw__decoder__alloc(), &free); - } - - static inline wuffs_base__io_transformer::unique_ptr - alloc_as__wuffs_base__io_transformer() { - return wuffs_base__io_transformer::unique_ptr( - wuffs_lzw__decoder__alloc_as__wuffs_base__io_transformer(), &free); - } -#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR) - -#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) - // Disallow constructing or copying an object via standard C++ mechanisms, - // e.g. the "new" operator, as this struct is intentionally opaque. Its total - // size and field layout is not part of the public, stable, memory-safe API. - // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and - // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as - // their first argument) rather than tweaking bar.private_impl.qux fields. - // - // In C, we can just leave wuffs_foo__bar as an incomplete type (unless - // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in - // order to provide convenience methods. These forward on "this", so that you - // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)". - wuffs_lzw__decoder__struct() = delete; - wuffs_lzw__decoder__struct(const wuffs_lzw__decoder__struct&) = delete; - wuffs_lzw__decoder__struct& operator=( - const wuffs_lzw__decoder__struct&) = delete; -#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) - -#if !defined(WUFFS_IMPLEMENTATION) - // As above, the size of the struct is not part of the public API, and unless - // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap - // allocated, not stack allocated. Its size is not intended to be known at - // compile time, but it is unfortunately divulged as a side effect of - // defining C++ convenience methods. Use "sizeof__T()", calling the function, - // instead of "sizeof T", invoking the operator. To make the two values - // different, so that passing the latter will be rejected by the initialize - // function, we add an arbitrary amount of dead weight. - uint8_t dead_weight[123000000]; // 123 MB. -#endif // !defined(WUFFS_IMPLEMENTATION) - - inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT - initialize( - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options) { - return wuffs_lzw__decoder__initialize( - this, sizeof_star_self, wuffs_version, options); - } - - inline wuffs_base__io_transformer* - upcast_as__wuffs_base__io_transformer() { - return (wuffs_base__io_transformer*)this; - } - - inline wuffs_base__status - set_quirk( - uint32_t a_key, - uint64_t a_value) { - return wuffs_lzw__decoder__set_quirk(this, a_key, a_value); - } - - inline wuffs_base__range_ii_u64 - workbuf_len() const { - return wuffs_lzw__decoder__workbuf_len(this); - } - - inline wuffs_base__status - transform_io( - wuffs_base__io_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__slice_u8 a_workbuf) { - return wuffs_lzw__decoder__transform_io(this, a_dst, a_src, a_workbuf); - } - - inline wuffs_base__slice_u8 - flush() { - return wuffs_lzw__decoder__flush(this); - } - -#endif // __cplusplus -}; // struct wuffs_lzw__decoder__struct - -#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) - -#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__LZW) || defined(WUFFS_NONMONOLITHIC) - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__GIF) || defined(WUFFS_NONMONOLITHIC) - -// ---------------- Status Codes - -extern const char wuffs_gif__error__bad_extension_label[]; -extern const char wuffs_gif__error__bad_frame_size[]; -extern const char wuffs_gif__error__bad_graphic_control[]; -extern const char wuffs_gif__error__bad_header[]; -extern const char wuffs_gif__error__bad_literal_width[]; -extern const char wuffs_gif__error__bad_palette[]; -extern const char wuffs_gif__error__truncated_input[]; - -// ---------------- Public Consts - -#define WUFFS_GIF__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0 - -#define WUFFS_GIF__QUIRK_DELAY_NUM_DECODED_FRAMES 1041635328 - -#define WUFFS_GIF__QUIRK_FIRST_FRAME_LOCAL_PALETTE_MEANS_BLACK_BACKGROUND 1041635329 - -#define WUFFS_GIF__QUIRK_HONOR_BACKGROUND_COLOR 1041635330 - -#define WUFFS_GIF__QUIRK_IGNORE_TOO_MUCH_PIXEL_DATA 1041635331 - -#define WUFFS_GIF__QUIRK_IMAGE_BOUNDS_ARE_STRICT 1041635332 - -#define WUFFS_GIF__QUIRK_REJECT_EMPTY_FRAME 1041635333 - -#define WUFFS_GIF__QUIRK_REJECT_EMPTY_PALETTE 1041635334 - -// ---------------- Struct Declarations - -typedef struct wuffs_gif__decoder__struct wuffs_gif__decoder; - -#ifdef __cplusplus -extern "C" { -#endif - -// ---------------- Public Initializer Prototypes - -// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self, -// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)". -// -// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version. -// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options. - -wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT -wuffs_gif__decoder__initialize( - wuffs_gif__decoder* self, - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options); - -size_t -sizeof__wuffs_gif__decoder(); - -// ---------------- Allocs - -// These functions allocate and initialize Wuffs structs. They return NULL if -// memory allocation fails. If they return non-NULL, there is no need to call -// wuffs_foo__bar__initialize, but the caller is responsible for eventually -// calling free on the returned pointer. That pointer is effectively a C++ -// std::unique_ptr. - -wuffs_gif__decoder* -wuffs_gif__decoder__alloc(); - -static inline wuffs_base__image_decoder* -wuffs_gif__decoder__alloc_as__wuffs_base__image_decoder() { - return (wuffs_base__image_decoder*)(wuffs_gif__decoder__alloc()); -} - -// ---------------- Upcasts - -static inline wuffs_base__image_decoder* -wuffs_gif__decoder__upcast_as__wuffs_base__image_decoder( - wuffs_gif__decoder* p) { - return (wuffs_base__image_decoder*)p; -} - -// ---------------- Public Function Prototypes - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_gif__decoder__set_quirk( - wuffs_gif__decoder* self, - uint32_t a_key, - uint64_t a_value); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_gif__decoder__decode_image_config( - wuffs_gif__decoder* self, - wuffs_base__image_config* a_dst, - wuffs_base__io_buffer* a_src); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct -wuffs_gif__decoder__set_report_metadata( - wuffs_gif__decoder* self, - uint32_t a_fourcc, - bool a_report); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_gif__decoder__tell_me_more( - wuffs_gif__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__more_information* a_minfo, - wuffs_base__io_buffer* a_src); - -WUFFS_BASE__MAYBE_STATIC uint32_t -wuffs_gif__decoder__num_animation_loops( - const wuffs_gif__decoder* self); - -WUFFS_BASE__MAYBE_STATIC uint64_t -wuffs_gif__decoder__num_decoded_frame_configs( - const wuffs_gif__decoder* self); - -WUFFS_BASE__MAYBE_STATIC uint64_t -wuffs_gif__decoder__num_decoded_frames( - const wuffs_gif__decoder* self); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32 -wuffs_gif__decoder__frame_dirty_rect( - const wuffs_gif__decoder* self); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 -wuffs_gif__decoder__workbuf_len( - const wuffs_gif__decoder* self); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_gif__decoder__restart_frame( - wuffs_gif__decoder* self, - uint64_t a_index, - uint64_t a_io_position); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_gif__decoder__decode_frame_config( - wuffs_gif__decoder* self, - wuffs_base__frame_config* a_dst, - wuffs_base__io_buffer* a_src); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_gif__decoder__decode_frame( - wuffs_gif__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__pixel_blend a_blend, - wuffs_base__slice_u8 a_workbuf, - wuffs_base__decode_frame_options* a_opts); - -#ifdef __cplusplus -} // extern "C" -#endif - -// ---------------- Struct Definitions - -// These structs' fields, and the sizeof them, are private implementation -// details that aren't guaranteed to be stable across Wuffs versions. -// -// See https://en.wikipedia.org/wiki/Opaque_pointer#C - -#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) - -struct wuffs_gif__decoder__struct { - // Do not access the private_impl's or private_data's fields directly. There - // is no API/ABI compatibility or safety guarantee if you do so. Instead, use - // the wuffs_foo__bar__baz functions. - // - // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct - // can be stack allocated when WUFFS_IMPLEMENTATION is defined. - - struct { - uint32_t magic; - uint32_t active_coroutine; - wuffs_base__vtable vtable_for__wuffs_base__image_decoder; - wuffs_base__vtable null_vtable; - - uint32_t f_width; - uint32_t f_height; - uint8_t f_call_sequence; - bool f_report_metadata_iccp; - bool f_report_metadata_xmp; - uint32_t f_metadata_fourcc; - uint64_t f_metadata_io_position; - bool f_quirks[7]; - bool f_delayed_num_decoded_frames; - bool f_previous_lzw_decode_ended_abruptly; - bool f_seen_header; - bool f_has_global_palette; - uint8_t f_interlace; - bool f_seen_num_animation_loops_value; - uint32_t f_num_animation_loops_value; - uint32_t f_background_color_u32_argb_premul; - uint32_t f_black_color_u32_argb_premul; - bool f_gc_has_transparent_index; - uint8_t f_gc_transparent_index; - uint8_t f_gc_disposal; - uint64_t f_gc_duration; - uint64_t f_frame_config_io_position; - uint64_t f_num_decoded_frame_configs_value; - uint64_t f_num_decoded_frames_value; - uint32_t f_frame_rect_x0; - uint32_t f_frame_rect_y0; - uint32_t f_frame_rect_x1; - uint32_t f_frame_rect_y1; - uint32_t f_dst_x; - uint32_t f_dst_y; - uint32_t f_dirty_max_excl_y; - uint64_t f_compressed_ri; - uint64_t f_compressed_wi; - wuffs_base__pixel_swizzler f_swizzler; - - uint32_t p_decode_image_config[1]; - uint32_t p_do_decode_image_config[1]; - uint32_t p_tell_me_more[1]; - uint32_t p_do_tell_me_more[1]; - uint32_t p_decode_frame_config[1]; - uint32_t p_do_decode_frame_config[1]; - uint32_t p_skip_frame[1]; - uint32_t p_decode_frame[1]; - uint32_t p_do_decode_frame[1]; - uint32_t p_decode_up_to_id_part1[1]; - uint32_t p_decode_header[1]; - uint32_t p_decode_lsd[1]; - uint32_t p_decode_extension[1]; - uint32_t p_skip_blocks[1]; - uint32_t p_decode_ae[1]; - uint32_t p_decode_gc[1]; - uint32_t p_decode_id_part0[1]; - uint32_t p_decode_id_part1[1]; - uint32_t p_decode_id_part2[1]; - } private_impl; - - struct { - uint8_t f_compressed[4096]; - uint8_t f_palettes[2][1024]; - uint8_t f_dst_palette[1024]; - wuffs_lzw__decoder f_lzw; - - struct { - uint32_t v_background_color; - } s_do_decode_frame_config[1]; - struct { - uint64_t scratch; - } s_skip_frame[1]; - struct { - uint8_t v_c[6]; - uint32_t v_i; - } s_decode_header[1]; - struct { - uint8_t v_flags; - uint8_t v_background_color_index; - uint32_t v_num_palette_entries; - uint32_t v_i; - uint64_t scratch; - } s_decode_lsd[1]; - struct { - uint64_t scratch; - } s_skip_blocks[1]; - struct { - uint8_t v_block_size; - bool v_is_animexts; - bool v_is_netscape; - bool v_is_iccp; - bool v_is_xmp; - uint64_t scratch; - } s_decode_ae[1]; - struct { - uint64_t scratch; - } s_decode_gc[1]; - struct { - uint64_t scratch; - } s_decode_id_part0[1]; - struct { - uint8_t v_which_palette; - uint32_t v_num_palette_entries; - uint32_t v_i; - uint64_t scratch; - } s_decode_id_part1[1]; - struct { - uint64_t v_block_size; - bool v_need_block_size; - uint64_t scratch; - } s_decode_id_part2[1]; - } private_data; - -#ifdef __cplusplus -#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR) - using unique_ptr = std::unique_ptr; - - // On failure, the alloc_etc functions return nullptr. They don't throw. - - static inline unique_ptr - alloc() { - return unique_ptr(wuffs_gif__decoder__alloc(), &free); - } - - static inline wuffs_base__image_decoder::unique_ptr - alloc_as__wuffs_base__image_decoder() { - return wuffs_base__image_decoder::unique_ptr( - wuffs_gif__decoder__alloc_as__wuffs_base__image_decoder(), &free); - } -#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR) - -#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) - // Disallow constructing or copying an object via standard C++ mechanisms, - // e.g. the "new" operator, as this struct is intentionally opaque. Its total - // size and field layout is not part of the public, stable, memory-safe API. - // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and - // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as - // their first argument) rather than tweaking bar.private_impl.qux fields. - // - // In C, we can just leave wuffs_foo__bar as an incomplete type (unless - // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in - // order to provide convenience methods. These forward on "this", so that you - // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)". - wuffs_gif__decoder__struct() = delete; - wuffs_gif__decoder__struct(const wuffs_gif__decoder__struct&) = delete; - wuffs_gif__decoder__struct& operator=( - const wuffs_gif__decoder__struct&) = delete; -#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) - -#if !defined(WUFFS_IMPLEMENTATION) - // As above, the size of the struct is not part of the public API, and unless - // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap - // allocated, not stack allocated. Its size is not intended to be known at - // compile time, but it is unfortunately divulged as a side effect of - // defining C++ convenience methods. Use "sizeof__T()", calling the function, - // instead of "sizeof T", invoking the operator. To make the two values - // different, so that passing the latter will be rejected by the initialize - // function, we add an arbitrary amount of dead weight. - uint8_t dead_weight[123000000]; // 123 MB. -#endif // !defined(WUFFS_IMPLEMENTATION) - - inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT - initialize( - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options) { - return wuffs_gif__decoder__initialize( - this, sizeof_star_self, wuffs_version, options); - } - - inline wuffs_base__image_decoder* - upcast_as__wuffs_base__image_decoder() { - return (wuffs_base__image_decoder*)this; - } - - inline wuffs_base__status - set_quirk( - uint32_t a_key, - uint64_t a_value) { - return wuffs_gif__decoder__set_quirk(this, a_key, a_value); - } - - inline wuffs_base__status - decode_image_config( - wuffs_base__image_config* a_dst, - wuffs_base__io_buffer* a_src) { - return wuffs_gif__decoder__decode_image_config(this, a_dst, a_src); - } - - inline wuffs_base__empty_struct - set_report_metadata( - uint32_t a_fourcc, - bool a_report) { - return wuffs_gif__decoder__set_report_metadata(this, a_fourcc, a_report); - } - - inline wuffs_base__status - tell_me_more( - wuffs_base__io_buffer* a_dst, - wuffs_base__more_information* a_minfo, - wuffs_base__io_buffer* a_src) { - return wuffs_gif__decoder__tell_me_more(this, a_dst, a_minfo, a_src); - } - - inline uint32_t - num_animation_loops() const { - return wuffs_gif__decoder__num_animation_loops(this); - } - - inline uint64_t - num_decoded_frame_configs() const { - return wuffs_gif__decoder__num_decoded_frame_configs(this); - } - - inline uint64_t - num_decoded_frames() const { - return wuffs_gif__decoder__num_decoded_frames(this); - } - - inline wuffs_base__rect_ie_u32 - frame_dirty_rect() const { - return wuffs_gif__decoder__frame_dirty_rect(this); - } - - inline wuffs_base__range_ii_u64 - workbuf_len() const { - return wuffs_gif__decoder__workbuf_len(this); - } - - inline wuffs_base__status - restart_frame( - uint64_t a_index, - uint64_t a_io_position) { - return wuffs_gif__decoder__restart_frame(this, a_index, a_io_position); - } - - inline wuffs_base__status - decode_frame_config( - wuffs_base__frame_config* a_dst, - wuffs_base__io_buffer* a_src) { - return wuffs_gif__decoder__decode_frame_config(this, a_dst, a_src); - } - - inline wuffs_base__status - decode_frame( - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__pixel_blend a_blend, - wuffs_base__slice_u8 a_workbuf, - wuffs_base__decode_frame_options* a_opts) { - return wuffs_gif__decoder__decode_frame(this, a_dst, a_src, a_blend, a_workbuf, a_opts); - } - -#endif // __cplusplus -}; // struct wuffs_gif__decoder__struct - -#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) - -#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__GIF) || defined(WUFFS_NONMONOLITHIC) - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__GZIP) || defined(WUFFS_NONMONOLITHIC) - -// ---------------- Status Codes - -extern const char wuffs_gzip__error__bad_checksum[]; -extern const char wuffs_gzip__error__bad_compression_method[]; -extern const char wuffs_gzip__error__bad_encoding_flags[]; -extern const char wuffs_gzip__error__bad_header[]; -extern const char wuffs_gzip__error__truncated_input[]; - -// ---------------- Public Consts - -#define WUFFS_GZIP__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 1 - -// ---------------- Struct Declarations - -typedef struct wuffs_gzip__decoder__struct wuffs_gzip__decoder; - -#ifdef __cplusplus -extern "C" { -#endif - -// ---------------- Public Initializer Prototypes - -// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self, -// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)". -// -// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version. -// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options. - -wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT -wuffs_gzip__decoder__initialize( - wuffs_gzip__decoder* self, - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options); - -size_t -sizeof__wuffs_gzip__decoder(); - -// ---------------- Allocs - -// These functions allocate and initialize Wuffs structs. They return NULL if -// memory allocation fails. If they return non-NULL, there is no need to call -// wuffs_foo__bar__initialize, but the caller is responsible for eventually -// calling free on the returned pointer. That pointer is effectively a C++ -// std::unique_ptr. - -wuffs_gzip__decoder* -wuffs_gzip__decoder__alloc(); - -static inline wuffs_base__io_transformer* -wuffs_gzip__decoder__alloc_as__wuffs_base__io_transformer() { - return (wuffs_base__io_transformer*)(wuffs_gzip__decoder__alloc()); -} - -// ---------------- Upcasts - -static inline wuffs_base__io_transformer* -wuffs_gzip__decoder__upcast_as__wuffs_base__io_transformer( - wuffs_gzip__decoder* p) { - return (wuffs_base__io_transformer*)p; -} - -// ---------------- Public Function Prototypes - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_gzip__decoder__set_quirk( - wuffs_gzip__decoder* self, - uint32_t a_key, - uint64_t a_value); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 -wuffs_gzip__decoder__workbuf_len( - const wuffs_gzip__decoder* self); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_gzip__decoder__transform_io( - wuffs_gzip__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__slice_u8 a_workbuf); - -#ifdef __cplusplus -} // extern "C" -#endif - -// ---------------- Struct Definitions - -// These structs' fields, and the sizeof them, are private implementation -// details that aren't guaranteed to be stable across Wuffs versions. -// -// See https://en.wikipedia.org/wiki/Opaque_pointer#C - -#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) - -struct wuffs_gzip__decoder__struct { - // Do not access the private_impl's or private_data's fields directly. There - // is no API/ABI compatibility or safety guarantee if you do so. Instead, use - // the wuffs_foo__bar__baz functions. - // - // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct - // can be stack allocated when WUFFS_IMPLEMENTATION is defined. - - struct { - uint32_t magic; - uint32_t active_coroutine; - wuffs_base__vtable vtable_for__wuffs_base__io_transformer; - wuffs_base__vtable null_vtable; - - bool f_ignore_checksum; - - uint32_t p_transform_io[1]; - uint32_t p_do_transform_io[1]; - } private_impl; - - struct { - wuffs_crc32__ieee_hasher f_checksum; - wuffs_deflate__decoder f_flate; - - struct { - uint8_t v_flags; - uint32_t v_checksum_got; - uint32_t v_decoded_length_got; - uint32_t v_checksum_want; - uint64_t scratch; - } s_do_transform_io[1]; - } private_data; - -#ifdef __cplusplus -#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR) - using unique_ptr = std::unique_ptr; - - // On failure, the alloc_etc functions return nullptr. They don't throw. - - static inline unique_ptr - alloc() { - return unique_ptr(wuffs_gzip__decoder__alloc(), &free); - } - - static inline wuffs_base__io_transformer::unique_ptr - alloc_as__wuffs_base__io_transformer() { - return wuffs_base__io_transformer::unique_ptr( - wuffs_gzip__decoder__alloc_as__wuffs_base__io_transformer(), &free); - } -#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR) - -#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) - // Disallow constructing or copying an object via standard C++ mechanisms, - // e.g. the "new" operator, as this struct is intentionally opaque. Its total - // size and field layout is not part of the public, stable, memory-safe API. - // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and - // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as - // their first argument) rather than tweaking bar.private_impl.qux fields. - // - // In C, we can just leave wuffs_foo__bar as an incomplete type (unless - // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in - // order to provide convenience methods. These forward on "this", so that you - // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)". - wuffs_gzip__decoder__struct() = delete; - wuffs_gzip__decoder__struct(const wuffs_gzip__decoder__struct&) = delete; - wuffs_gzip__decoder__struct& operator=( - const wuffs_gzip__decoder__struct&) = delete; -#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) - -#if !defined(WUFFS_IMPLEMENTATION) - // As above, the size of the struct is not part of the public API, and unless - // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap - // allocated, not stack allocated. Its size is not intended to be known at - // compile time, but it is unfortunately divulged as a side effect of - // defining C++ convenience methods. Use "sizeof__T()", calling the function, - // instead of "sizeof T", invoking the operator. To make the two values - // different, so that passing the latter will be rejected by the initialize - // function, we add an arbitrary amount of dead weight. - uint8_t dead_weight[123000000]; // 123 MB. -#endif // !defined(WUFFS_IMPLEMENTATION) - - inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT - initialize( - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options) { - return wuffs_gzip__decoder__initialize( - this, sizeof_star_self, wuffs_version, options); - } - - inline wuffs_base__io_transformer* - upcast_as__wuffs_base__io_transformer() { - return (wuffs_base__io_transformer*)this; - } - - inline wuffs_base__status - set_quirk( - uint32_t a_key, - uint64_t a_value) { - return wuffs_gzip__decoder__set_quirk(this, a_key, a_value); - } - - inline wuffs_base__range_ii_u64 - workbuf_len() const { - return wuffs_gzip__decoder__workbuf_len(this); - } - - inline wuffs_base__status - transform_io( - wuffs_base__io_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__slice_u8 a_workbuf) { - return wuffs_gzip__decoder__transform_io(this, a_dst, a_src, a_workbuf); - } - -#endif // __cplusplus -}; // struct wuffs_gzip__decoder__struct - -#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) - -#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__GZIP) || defined(WUFFS_NONMONOLITHIC) - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__JPEG) || defined(WUFFS_NONMONOLITHIC) - -// ---------------- Status Codes - -extern const char wuffs_jpeg__error__bad_dht_marker[]; -extern const char wuffs_jpeg__error__bad_dqt_marker[]; -extern const char wuffs_jpeg__error__bad_dri_marker[]; -extern const char wuffs_jpeg__error__bad_sof_marker[]; -extern const char wuffs_jpeg__error__bad_sos_marker[]; -extern const char wuffs_jpeg__error__bad_header[]; -extern const char wuffs_jpeg__error__bad_marker[]; -extern const char wuffs_jpeg__error__missing_huffman_table[]; -extern const char wuffs_jpeg__error__missing_quantization_table[]; -extern const char wuffs_jpeg__error__truncated_input[]; -extern const char wuffs_jpeg__error__unsupported_arithmetic_coding[]; -extern const char wuffs_jpeg__error__unsupported_fractional_sampling[]; -extern const char wuffs_jpeg__error__unsupported_hierarchical_coding[]; -extern const char wuffs_jpeg__error__unsupported_implicit_height[]; -extern const char wuffs_jpeg__error__unsupported_lossless_coding[]; -extern const char wuffs_jpeg__error__unsupported_marker[]; -extern const char wuffs_jpeg__error__unsupported_precision_12_bits[]; -extern const char wuffs_jpeg__error__unsupported_precision_16_bits[]; -extern const char wuffs_jpeg__error__unsupported_precision[]; - -// ---------------- Public Consts - -#define WUFFS_JPEG__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 17184063744 - -// ---------------- Struct Declarations - -typedef struct wuffs_jpeg__decoder__struct wuffs_jpeg__decoder; - -#ifdef __cplusplus -extern "C" { -#endif - -// ---------------- Public Initializer Prototypes - -// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self, -// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)". -// -// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version. -// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options. - -wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT -wuffs_jpeg__decoder__initialize( - wuffs_jpeg__decoder* self, - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options); - -size_t -sizeof__wuffs_jpeg__decoder(); - -// ---------------- Allocs - -// These functions allocate and initialize Wuffs structs. They return NULL if -// memory allocation fails. If they return non-NULL, there is no need to call -// wuffs_foo__bar__initialize, but the caller is responsible for eventually -// calling free on the returned pointer. That pointer is effectively a C++ -// std::unique_ptr. - -wuffs_jpeg__decoder* -wuffs_jpeg__decoder__alloc(); - -static inline wuffs_base__image_decoder* -wuffs_jpeg__decoder__alloc_as__wuffs_base__image_decoder() { - return (wuffs_base__image_decoder*)(wuffs_jpeg__decoder__alloc()); -} - -// ---------------- Upcasts - -static inline wuffs_base__image_decoder* -wuffs_jpeg__decoder__upcast_as__wuffs_base__image_decoder( - wuffs_jpeg__decoder* p) { - return (wuffs_base__image_decoder*)p; -} - -// ---------------- Public Function Prototypes - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_jpeg__decoder__set_quirk( - wuffs_jpeg__decoder* self, - uint32_t a_key, - uint64_t a_value); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_jpeg__decoder__decode_image_config( - wuffs_jpeg__decoder* self, - wuffs_base__image_config* a_dst, - wuffs_base__io_buffer* a_src); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_jpeg__decoder__decode_frame_config( - wuffs_jpeg__decoder* self, - wuffs_base__frame_config* a_dst, - wuffs_base__io_buffer* a_src); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_jpeg__decoder__decode_frame( - wuffs_jpeg__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__pixel_blend a_blend, - wuffs_base__slice_u8 a_workbuf, - wuffs_base__decode_frame_options* a_opts); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32 -wuffs_jpeg__decoder__frame_dirty_rect( - const wuffs_jpeg__decoder* self); - -WUFFS_BASE__MAYBE_STATIC uint32_t -wuffs_jpeg__decoder__num_animation_loops( - const wuffs_jpeg__decoder* self); - -WUFFS_BASE__MAYBE_STATIC uint64_t -wuffs_jpeg__decoder__num_decoded_frame_configs( - const wuffs_jpeg__decoder* self); - -WUFFS_BASE__MAYBE_STATIC uint64_t -wuffs_jpeg__decoder__num_decoded_frames( - const wuffs_jpeg__decoder* self); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_jpeg__decoder__restart_frame( - wuffs_jpeg__decoder* self, - uint64_t a_index, - uint64_t a_io_position); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct -wuffs_jpeg__decoder__set_report_metadata( - wuffs_jpeg__decoder* self, - uint32_t a_fourcc, - bool a_report); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_jpeg__decoder__tell_me_more( - wuffs_jpeg__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__more_information* a_minfo, - wuffs_base__io_buffer* a_src); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 -wuffs_jpeg__decoder__workbuf_len( - const wuffs_jpeg__decoder* self); - -#ifdef __cplusplus -} // extern "C" -#endif - -// ---------------- Struct Definitions - -// These structs' fields, and the sizeof them, are private implementation -// details that aren't guaranteed to be stable across Wuffs versions. -// -// See https://en.wikipedia.org/wiki/Opaque_pointer#C - -#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) - -struct wuffs_jpeg__decoder__struct { - // Do not access the private_impl's or private_data's fields directly. There - // is no API/ABI compatibility or safety guarantee if you do so. Instead, use - // the wuffs_foo__bar__baz functions. - // - // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct - // can be stack allocated when WUFFS_IMPLEMENTATION is defined. - - struct { - uint32_t magic; - uint32_t active_coroutine; - wuffs_base__vtable vtable_for__wuffs_base__image_decoder; - wuffs_base__vtable null_vtable; - - uint32_t f_width; - uint32_t f_height; - uint32_t f_width_in_mcus; - uint32_t f_height_in_mcus; - uint8_t f_call_sequence; - uint8_t f_sof_marker; - uint8_t f_next_restart_marker; - uint8_t f_max_incl_components_h; - uint8_t f_max_incl_components_v; - uint32_t f_num_components; - uint8_t f_components_c[4]; - uint8_t f_components_h[4]; - uint8_t f_components_v[4]; - uint8_t f_components_tq[4]; - uint32_t f_components_workbuf_widths[4]; - uint32_t f_components_workbuf_heights[4]; - uint64_t f_components_workbuf_offsets[5]; - uint32_t f_scan_num_components; - uint8_t f_scan_comps_cselector[4]; - uint8_t f_scan_comps_td[4]; - uint8_t f_scan_comps_ta[4]; - uint8_t f_scan_ss; - uint8_t f_scan_se; - uint8_t f_scan_ah; - uint8_t f_scan_al; - uint32_t f_scan_width_in_mcus; - uint32_t f_scan_height_in_mcus; - uint8_t f_scan_comps_bx_offset[16]; - uint8_t f_scan_comps_by_offset[16]; - uint32_t f_mcu_num_blocks; - uint32_t f_mcu_current_block; - uint8_t f_mcu_blocks_sselector[16]; - uint32_t f_mcu_zig_index; - uint16_t f_mcu_previous_dc_values[4]; - uint16_t f_restart_interval; - uint16_t f_saved_restart_interval; - uint16_t f_restarts_remaining; - uint64_t f_frame_config_io_position; - uint32_t f_payload_length; - bool f_seen_dqt[4]; - bool f_saved_seen_dqt[4]; - bool f_seen_dht[8]; - uint64_t f_bitstream_bits; - uint32_t f_bitstream_n_bits; - uint32_t f_bitstream_ri; - uint32_t f_bitstream_wi; - uint8_t f_quant_tables[4][64]; - uint8_t f_saved_quant_tables[4][64]; - uint8_t f_huff_tables_symbols[8][256]; - uint32_t f_huff_tables_slow[8][16]; - uint16_t f_huff_tables_fast[8][256]; - wuffs_base__pixel_swizzler f_swizzler; - - uint32_t p_decode_image_config[1]; - uint32_t p_do_decode_image_config[1]; - uint32_t p_decode_dqt[1]; - uint32_t p_decode_dri[1]; - uint32_t p_decode_sof[1]; - uint32_t p_decode_frame_config[1]; - uint32_t p_do_decode_frame_config[1]; - uint32_t p_decode_frame[1]; - uint32_t p_do_decode_frame[1]; - uint32_t p_decode_dht[1]; - uint32_t p_decode_sos[1]; - uint32_t p_prepare_scan[1]; - uint32_t p_skip_past_the_next_restart_marker[1]; - } private_impl; - - struct { - uint8_t f_bitstream_buffer[2048]; - uint16_t f_mcu_blocks[10][64]; - uint8_t f_dht_temp_counts[16]; - uint8_t f_dht_temp_bit_lengths[256]; - uint16_t f_dht_temp_bit_strings[256]; - uint8_t f_dst_palette[1024]; - - struct { - uint8_t v_marker; - uint64_t scratch; - } s_do_decode_image_config[1]; - struct { - uint8_t v_q; - uint32_t v_i; - } s_decode_dqt[1]; - struct { - uint64_t scratch; - } s_decode_dri[1]; - struct { - uint32_t v_i; - uint64_t scratch; - } s_decode_sof[1]; - struct { - uint8_t v_marker; - uint64_t scratch; - } s_do_decode_frame[1]; - struct { - uint8_t v_tc4_th; - uint32_t v_total_count; - uint32_t v_i; - } s_decode_dht[1]; - struct { - uint32_t v_my; - uint32_t v_mx; - } s_decode_sos[1]; - struct { - uint32_t v_i; - } s_prepare_scan[1]; - } private_data; - -#ifdef __cplusplus -#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR) - using unique_ptr = std::unique_ptr; - - // On failure, the alloc_etc functions return nullptr. They don't throw. - - static inline unique_ptr - alloc() { - return unique_ptr(wuffs_jpeg__decoder__alloc(), &free); - } - - static inline wuffs_base__image_decoder::unique_ptr - alloc_as__wuffs_base__image_decoder() { - return wuffs_base__image_decoder::unique_ptr( - wuffs_jpeg__decoder__alloc_as__wuffs_base__image_decoder(), &free); - } -#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR) - -#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) - // Disallow constructing or copying an object via standard C++ mechanisms, - // e.g. the "new" operator, as this struct is intentionally opaque. Its total - // size and field layout is not part of the public, stable, memory-safe API. - // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and - // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as - // their first argument) rather than tweaking bar.private_impl.qux fields. - // - // In C, we can just leave wuffs_foo__bar as an incomplete type (unless - // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in - // order to provide convenience methods. These forward on "this", so that you - // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)". - wuffs_jpeg__decoder__struct() = delete; - wuffs_jpeg__decoder__struct(const wuffs_jpeg__decoder__struct&) = delete; - wuffs_jpeg__decoder__struct& operator=( - const wuffs_jpeg__decoder__struct&) = delete; -#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) - -#if !defined(WUFFS_IMPLEMENTATION) - // As above, the size of the struct is not part of the public API, and unless - // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap - // allocated, not stack allocated. Its size is not intended to be known at - // compile time, but it is unfortunately divulged as a side effect of - // defining C++ convenience methods. Use "sizeof__T()", calling the function, - // instead of "sizeof T", invoking the operator. To make the two values - // different, so that passing the latter will be rejected by the initialize - // function, we add an arbitrary amount of dead weight. - uint8_t dead_weight[123000000]; // 123 MB. -#endif // !defined(WUFFS_IMPLEMENTATION) - - inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT - initialize( - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options) { - return wuffs_jpeg__decoder__initialize( - this, sizeof_star_self, wuffs_version, options); - } - - inline wuffs_base__image_decoder* - upcast_as__wuffs_base__image_decoder() { - return (wuffs_base__image_decoder*)this; - } - - inline wuffs_base__status - set_quirk( - uint32_t a_key, - uint64_t a_value) { - return wuffs_jpeg__decoder__set_quirk(this, a_key, a_value); - } - - inline wuffs_base__status - decode_image_config( - wuffs_base__image_config* a_dst, - wuffs_base__io_buffer* a_src) { - return wuffs_jpeg__decoder__decode_image_config(this, a_dst, a_src); - } - - inline wuffs_base__status - decode_frame_config( - wuffs_base__frame_config* a_dst, - wuffs_base__io_buffer* a_src) { - return wuffs_jpeg__decoder__decode_frame_config(this, a_dst, a_src); - } - - inline wuffs_base__status - decode_frame( - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__pixel_blend a_blend, - wuffs_base__slice_u8 a_workbuf, - wuffs_base__decode_frame_options* a_opts) { - return wuffs_jpeg__decoder__decode_frame(this, a_dst, a_src, a_blend, a_workbuf, a_opts); - } - - inline wuffs_base__rect_ie_u32 - frame_dirty_rect() const { - return wuffs_jpeg__decoder__frame_dirty_rect(this); - } - - inline uint32_t - num_animation_loops() const { - return wuffs_jpeg__decoder__num_animation_loops(this); - } - - inline uint64_t - num_decoded_frame_configs() const { - return wuffs_jpeg__decoder__num_decoded_frame_configs(this); - } - - inline uint64_t - num_decoded_frames() const { - return wuffs_jpeg__decoder__num_decoded_frames(this); - } - - inline wuffs_base__status - restart_frame( - uint64_t a_index, - uint64_t a_io_position) { - return wuffs_jpeg__decoder__restart_frame(this, a_index, a_io_position); - } - - inline wuffs_base__empty_struct - set_report_metadata( - uint32_t a_fourcc, - bool a_report) { - return wuffs_jpeg__decoder__set_report_metadata(this, a_fourcc, a_report); - } - - inline wuffs_base__status - tell_me_more( - wuffs_base__io_buffer* a_dst, - wuffs_base__more_information* a_minfo, - wuffs_base__io_buffer* a_src) { - return wuffs_jpeg__decoder__tell_me_more(this, a_dst, a_minfo, a_src); - } - - inline wuffs_base__range_ii_u64 - workbuf_len() const { - return wuffs_jpeg__decoder__workbuf_len(this); - } - -#endif // __cplusplus -}; // struct wuffs_jpeg__decoder__struct - -#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) - -#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__JPEG) || defined(WUFFS_NONMONOLITHIC) - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__JSON) || defined(WUFFS_NONMONOLITHIC) - -// ---------------- Status Codes - -extern const char wuffs_json__error__bad_c0_control_code[]; -extern const char wuffs_json__error__bad_utf_8[]; -extern const char wuffs_json__error__bad_backslash_escape[]; -extern const char wuffs_json__error__bad_input[]; -extern const char wuffs_json__error__bad_new_line_in_a_string[]; -extern const char wuffs_json__error__bad_quirk_combination[]; -extern const char wuffs_json__error__unsupported_number_length[]; -extern const char wuffs_json__error__unsupported_recursion_depth[]; - -// ---------------- Public Consts - -#define WUFFS_JSON__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0 - -#define WUFFS_JSON__DECODER_DEPTH_MAX_INCL 1024 - -#define WUFFS_JSON__DECODER_DST_TOKEN_BUFFER_LENGTH_MIN_INCL 1 - -#define WUFFS_JSON__DECODER_SRC_IO_BUFFER_LENGTH_MIN_INCL 100 - -#define WUFFS_JSON__QUIRK_ALLOW_ASCII_CONTROL_CODES 1225364480 - -#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_A 1225364481 - -#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_CAPITAL_U 1225364482 - -#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_E 1225364483 - -#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_NEW_LINE 1225364484 - -#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_QUESTION_MARK 1225364485 - -#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_SINGLE_QUOTE 1225364486 - -#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_V 1225364487 - -#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_X_AS_CODE_POINTS 1225364489 - -#define WUFFS_JSON__QUIRK_ALLOW_BACKSLASH_ZERO 1225364490 - -#define WUFFS_JSON__QUIRK_ALLOW_COMMENT_BLOCK 1225364491 - -#define WUFFS_JSON__QUIRK_ALLOW_COMMENT_LINE 1225364492 - -#define WUFFS_JSON__QUIRK_ALLOW_EXTRA_COMMA 1225364493 - -#define WUFFS_JSON__QUIRK_ALLOW_INF_NAN_NUMBERS 1225364494 - -#define WUFFS_JSON__QUIRK_ALLOW_LEADING_ASCII_RECORD_SEPARATOR 1225364495 - -#define WUFFS_JSON__QUIRK_ALLOW_LEADING_UNICODE_BYTE_ORDER_MARK 1225364496 - -#define WUFFS_JSON__QUIRK_ALLOW_TRAILING_FILLER 1225364497 - -#define WUFFS_JSON__QUIRK_EXPECT_TRAILING_NEW_LINE_OR_EOF 1225364498 - -#define WUFFS_JSON__QUIRK_JSON_POINTER_ALLOW_TILDE_N_TILDE_R_TILDE_T 1225364499 - -#define WUFFS_JSON__QUIRK_REPLACE_INVALID_UNICODE 1225364500 - -// ---------------- Struct Declarations - -typedef struct wuffs_json__decoder__struct wuffs_json__decoder; - -#ifdef __cplusplus -extern "C" { -#endif - -// ---------------- Public Initializer Prototypes - -// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self, -// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)". -// -// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version. -// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options. - -wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT -wuffs_json__decoder__initialize( - wuffs_json__decoder* self, - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options); - -size_t -sizeof__wuffs_json__decoder(); - -// ---------------- Allocs - -// These functions allocate and initialize Wuffs structs. They return NULL if -// memory allocation fails. If they return non-NULL, there is no need to call -// wuffs_foo__bar__initialize, but the caller is responsible for eventually -// calling free on the returned pointer. That pointer is effectively a C++ -// std::unique_ptr. - -wuffs_json__decoder* -wuffs_json__decoder__alloc(); - -static inline wuffs_base__token_decoder* -wuffs_json__decoder__alloc_as__wuffs_base__token_decoder() { - return (wuffs_base__token_decoder*)(wuffs_json__decoder__alloc()); -} - -// ---------------- Upcasts - -static inline wuffs_base__token_decoder* -wuffs_json__decoder__upcast_as__wuffs_base__token_decoder( - wuffs_json__decoder* p) { - return (wuffs_base__token_decoder*)p; -} - -// ---------------- Public Function Prototypes - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_json__decoder__set_quirk( - wuffs_json__decoder* self, - uint32_t a_key, - uint64_t a_value); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 -wuffs_json__decoder__workbuf_len( - const wuffs_json__decoder* self); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_json__decoder__decode_tokens( - wuffs_json__decoder* self, - wuffs_base__token_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__slice_u8 a_workbuf); - -#ifdef __cplusplus -} // extern "C" -#endif - -// ---------------- Struct Definitions - -// These structs' fields, and the sizeof them, are private implementation -// details that aren't guaranteed to be stable across Wuffs versions. -// -// See https://en.wikipedia.org/wiki/Opaque_pointer#C - -#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) - -struct wuffs_json__decoder__struct { - // Do not access the private_impl's or private_data's fields directly. There - // is no API/ABI compatibility or safety guarantee if you do so. Instead, use - // the wuffs_foo__bar__baz functions. - // - // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct - // can be stack allocated when WUFFS_IMPLEMENTATION is defined. - - struct { - uint32_t magic; - uint32_t active_coroutine; - wuffs_base__vtable vtable_for__wuffs_base__token_decoder; - wuffs_base__vtable null_vtable; - - bool f_quirks[21]; - bool f_allow_leading_ars; - bool f_allow_leading_ubom; - bool f_end_of_data; - uint8_t f_trailer_stop; - uint8_t f_comment_type; - - uint32_t p_decode_tokens[1]; - uint32_t p_decode_leading[1]; - uint32_t p_decode_comment[1]; - uint32_t p_decode_inf_nan[1]; - uint32_t p_decode_trailer[1]; - } private_impl; - - struct { - uint32_t f_stack[32]; - - struct { - uint32_t v_depth; - uint32_t v_expect; - uint32_t v_expect_after_value; - } s_decode_tokens[1]; - } private_data; - -#ifdef __cplusplus -#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR) - using unique_ptr = std::unique_ptr; - - // On failure, the alloc_etc functions return nullptr. They don't throw. - - static inline unique_ptr - alloc() { - return unique_ptr(wuffs_json__decoder__alloc(), &free); - } - - static inline wuffs_base__token_decoder::unique_ptr - alloc_as__wuffs_base__token_decoder() { - return wuffs_base__token_decoder::unique_ptr( - wuffs_json__decoder__alloc_as__wuffs_base__token_decoder(), &free); - } -#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR) - -#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) - // Disallow constructing or copying an object via standard C++ mechanisms, - // e.g. the "new" operator, as this struct is intentionally opaque. Its total - // size and field layout is not part of the public, stable, memory-safe API. - // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and - // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as - // their first argument) rather than tweaking bar.private_impl.qux fields. - // - // In C, we can just leave wuffs_foo__bar as an incomplete type (unless - // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in - // order to provide convenience methods. These forward on "this", so that you - // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)". - wuffs_json__decoder__struct() = delete; - wuffs_json__decoder__struct(const wuffs_json__decoder__struct&) = delete; - wuffs_json__decoder__struct& operator=( - const wuffs_json__decoder__struct&) = delete; -#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) - -#if !defined(WUFFS_IMPLEMENTATION) - // As above, the size of the struct is not part of the public API, and unless - // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap - // allocated, not stack allocated. Its size is not intended to be known at - // compile time, but it is unfortunately divulged as a side effect of - // defining C++ convenience methods. Use "sizeof__T()", calling the function, - // instead of "sizeof T", invoking the operator. To make the two values - // different, so that passing the latter will be rejected by the initialize - // function, we add an arbitrary amount of dead weight. - uint8_t dead_weight[123000000]; // 123 MB. -#endif // !defined(WUFFS_IMPLEMENTATION) - - inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT - initialize( - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options) { - return wuffs_json__decoder__initialize( - this, sizeof_star_self, wuffs_version, options); - } - - inline wuffs_base__token_decoder* - upcast_as__wuffs_base__token_decoder() { - return (wuffs_base__token_decoder*)this; - } - - inline wuffs_base__status - set_quirk( - uint32_t a_key, - uint64_t a_value) { - return wuffs_json__decoder__set_quirk(this, a_key, a_value); - } - - inline wuffs_base__range_ii_u64 - workbuf_len() const { - return wuffs_json__decoder__workbuf_len(this); - } - - inline wuffs_base__status - decode_tokens( - wuffs_base__token_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__slice_u8 a_workbuf) { - return wuffs_json__decoder__decode_tokens(this, a_dst, a_src, a_workbuf); - } - -#endif // __cplusplus -}; // struct wuffs_json__decoder__struct - -#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) - -#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__JSON) || defined(WUFFS_NONMONOLITHIC) - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NETPBM) || defined(WUFFS_NONMONOLITHIC) - -// ---------------- Status Codes - -extern const char wuffs_netpbm__error__bad_header[]; -extern const char wuffs_netpbm__error__truncated_input[]; -extern const char wuffs_netpbm__error__unsupported_netpbm_file[]; - -// ---------------- Public Consts - -#define WUFFS_NETPBM__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0 - -// ---------------- Struct Declarations - -typedef struct wuffs_netpbm__decoder__struct wuffs_netpbm__decoder; - -#ifdef __cplusplus -extern "C" { -#endif - -// ---------------- Public Initializer Prototypes - -// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self, -// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)". -// -// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version. -// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options. - -wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT -wuffs_netpbm__decoder__initialize( - wuffs_netpbm__decoder* self, - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options); - -size_t -sizeof__wuffs_netpbm__decoder(); - -// ---------------- Allocs - -// These functions allocate and initialize Wuffs structs. They return NULL if -// memory allocation fails. If they return non-NULL, there is no need to call -// wuffs_foo__bar__initialize, but the caller is responsible for eventually -// calling free on the returned pointer. That pointer is effectively a C++ -// std::unique_ptr. - -wuffs_netpbm__decoder* -wuffs_netpbm__decoder__alloc(); - -static inline wuffs_base__image_decoder* -wuffs_netpbm__decoder__alloc_as__wuffs_base__image_decoder() { - return (wuffs_base__image_decoder*)(wuffs_netpbm__decoder__alloc()); -} - -// ---------------- Upcasts - -static inline wuffs_base__image_decoder* -wuffs_netpbm__decoder__upcast_as__wuffs_base__image_decoder( - wuffs_netpbm__decoder* p) { - return (wuffs_base__image_decoder*)p; -} - -// ---------------- Public Function Prototypes - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_netpbm__decoder__set_quirk( - wuffs_netpbm__decoder* self, - uint32_t a_key, - uint64_t a_value); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_netpbm__decoder__decode_image_config( - wuffs_netpbm__decoder* self, - wuffs_base__image_config* a_dst, - wuffs_base__io_buffer* a_src); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_netpbm__decoder__decode_frame_config( - wuffs_netpbm__decoder* self, - wuffs_base__frame_config* a_dst, - wuffs_base__io_buffer* a_src); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_netpbm__decoder__decode_frame( - wuffs_netpbm__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__pixel_blend a_blend, - wuffs_base__slice_u8 a_workbuf, - wuffs_base__decode_frame_options* a_opts); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32 -wuffs_netpbm__decoder__frame_dirty_rect( - const wuffs_netpbm__decoder* self); - -WUFFS_BASE__MAYBE_STATIC uint32_t -wuffs_netpbm__decoder__num_animation_loops( - const wuffs_netpbm__decoder* self); - -WUFFS_BASE__MAYBE_STATIC uint64_t -wuffs_netpbm__decoder__num_decoded_frame_configs( - const wuffs_netpbm__decoder* self); - -WUFFS_BASE__MAYBE_STATIC uint64_t -wuffs_netpbm__decoder__num_decoded_frames( - const wuffs_netpbm__decoder* self); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_netpbm__decoder__restart_frame( - wuffs_netpbm__decoder* self, - uint64_t a_index, - uint64_t a_io_position); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct -wuffs_netpbm__decoder__set_report_metadata( - wuffs_netpbm__decoder* self, - uint32_t a_fourcc, - bool a_report); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_netpbm__decoder__tell_me_more( - wuffs_netpbm__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__more_information* a_minfo, - wuffs_base__io_buffer* a_src); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 -wuffs_netpbm__decoder__workbuf_len( - const wuffs_netpbm__decoder* self); - -#ifdef __cplusplus -} // extern "C" -#endif - -// ---------------- Struct Definitions - -// These structs' fields, and the sizeof them, are private implementation -// details that aren't guaranteed to be stable across Wuffs versions. -// -// See https://en.wikipedia.org/wiki/Opaque_pointer#C - -#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) - -struct wuffs_netpbm__decoder__struct { - // Do not access the private_impl's or private_data's fields directly. There - // is no API/ABI compatibility or safety guarantee if you do so. Instead, use - // the wuffs_foo__bar__baz functions. - // - // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct - // can be stack allocated when WUFFS_IMPLEMENTATION is defined. - - struct { - uint32_t magic; - uint32_t active_coroutine; - wuffs_base__vtable vtable_for__wuffs_base__image_decoder; - wuffs_base__vtable null_vtable; - - uint32_t f_pixfmt; - uint32_t f_width; - uint32_t f_height; - uint32_t f_max_value; - uint8_t f_call_sequence; - uint64_t f_frame_config_io_position; - uint32_t f_dst_x; - uint32_t f_dst_y; - wuffs_base__pixel_swizzler f_swizzler; - - uint32_t p_decode_image_config[1]; - uint32_t p_do_decode_image_config[1]; - uint32_t p_decode_frame_config[1]; - uint32_t p_do_decode_frame_config[1]; - uint32_t p_decode_frame[1]; - uint32_t p_do_decode_frame[1]; - } private_impl; - -#ifdef __cplusplus -#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR) - using unique_ptr = std::unique_ptr; - - // On failure, the alloc_etc functions return nullptr. They don't throw. - - static inline unique_ptr - alloc() { - return unique_ptr(wuffs_netpbm__decoder__alloc(), &free); - } - - static inline wuffs_base__image_decoder::unique_ptr - alloc_as__wuffs_base__image_decoder() { - return wuffs_base__image_decoder::unique_ptr( - wuffs_netpbm__decoder__alloc_as__wuffs_base__image_decoder(), &free); - } -#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR) - -#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) - // Disallow constructing or copying an object via standard C++ mechanisms, - // e.g. the "new" operator, as this struct is intentionally opaque. Its total - // size and field layout is not part of the public, stable, memory-safe API. - // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and - // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as - // their first argument) rather than tweaking bar.private_impl.qux fields. - // - // In C, we can just leave wuffs_foo__bar as an incomplete type (unless - // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in - // order to provide convenience methods. These forward on "this", so that you - // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)". - wuffs_netpbm__decoder__struct() = delete; - wuffs_netpbm__decoder__struct(const wuffs_netpbm__decoder__struct&) = delete; - wuffs_netpbm__decoder__struct& operator=( - const wuffs_netpbm__decoder__struct&) = delete; -#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) - -#if !defined(WUFFS_IMPLEMENTATION) - // As above, the size of the struct is not part of the public API, and unless - // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap - // allocated, not stack allocated. Its size is not intended to be known at - // compile time, but it is unfortunately divulged as a side effect of - // defining C++ convenience methods. Use "sizeof__T()", calling the function, - // instead of "sizeof T", invoking the operator. To make the two values - // different, so that passing the latter will be rejected by the initialize - // function, we add an arbitrary amount of dead weight. - uint8_t dead_weight[123000000]; // 123 MB. -#endif // !defined(WUFFS_IMPLEMENTATION) - - inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT - initialize( - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options) { - return wuffs_netpbm__decoder__initialize( - this, sizeof_star_self, wuffs_version, options); - } - - inline wuffs_base__image_decoder* - upcast_as__wuffs_base__image_decoder() { - return (wuffs_base__image_decoder*)this; - } - - inline wuffs_base__status - set_quirk( - uint32_t a_key, - uint64_t a_value) { - return wuffs_netpbm__decoder__set_quirk(this, a_key, a_value); - } - - inline wuffs_base__status - decode_image_config( - wuffs_base__image_config* a_dst, - wuffs_base__io_buffer* a_src) { - return wuffs_netpbm__decoder__decode_image_config(this, a_dst, a_src); - } - - inline wuffs_base__status - decode_frame_config( - wuffs_base__frame_config* a_dst, - wuffs_base__io_buffer* a_src) { - return wuffs_netpbm__decoder__decode_frame_config(this, a_dst, a_src); - } - - inline wuffs_base__status - decode_frame( - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__pixel_blend a_blend, - wuffs_base__slice_u8 a_workbuf, - wuffs_base__decode_frame_options* a_opts) { - return wuffs_netpbm__decoder__decode_frame(this, a_dst, a_src, a_blend, a_workbuf, a_opts); - } - - inline wuffs_base__rect_ie_u32 - frame_dirty_rect() const { - return wuffs_netpbm__decoder__frame_dirty_rect(this); - } - - inline uint32_t - num_animation_loops() const { - return wuffs_netpbm__decoder__num_animation_loops(this); - } - - inline uint64_t - num_decoded_frame_configs() const { - return wuffs_netpbm__decoder__num_decoded_frame_configs(this); - } - - inline uint64_t - num_decoded_frames() const { - return wuffs_netpbm__decoder__num_decoded_frames(this); - } - - inline wuffs_base__status - restart_frame( - uint64_t a_index, - uint64_t a_io_position) { - return wuffs_netpbm__decoder__restart_frame(this, a_index, a_io_position); - } - - inline wuffs_base__empty_struct - set_report_metadata( - uint32_t a_fourcc, - bool a_report) { - return wuffs_netpbm__decoder__set_report_metadata(this, a_fourcc, a_report); - } - - inline wuffs_base__status - tell_me_more( - wuffs_base__io_buffer* a_dst, - wuffs_base__more_information* a_minfo, - wuffs_base__io_buffer* a_src) { - return wuffs_netpbm__decoder__tell_me_more(this, a_dst, a_minfo, a_src); - } - - inline wuffs_base__range_ii_u64 - workbuf_len() const { - return wuffs_netpbm__decoder__workbuf_len(this); - } - -#endif // __cplusplus -}; // struct wuffs_netpbm__decoder__struct - -#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) - -#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NETPBM) || defined(WUFFS_NONMONOLITHIC) - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NIE) || defined(WUFFS_NONMONOLITHIC) - -// ---------------- Status Codes - -extern const char wuffs_nie__error__bad_header[]; -extern const char wuffs_nie__error__truncated_input[]; -extern const char wuffs_nie__error__unsupported_nie_file[]; - -// ---------------- Public Consts - -#define WUFFS_NIE__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0 - -// ---------------- Struct Declarations - -typedef struct wuffs_nie__decoder__struct wuffs_nie__decoder; - -#ifdef __cplusplus -extern "C" { -#endif - -// ---------------- Public Initializer Prototypes - -// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self, -// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)". -// -// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version. -// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options. - -wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT -wuffs_nie__decoder__initialize( - wuffs_nie__decoder* self, - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options); - -size_t -sizeof__wuffs_nie__decoder(); - -// ---------------- Allocs - -// These functions allocate and initialize Wuffs structs. They return NULL if -// memory allocation fails. If they return non-NULL, there is no need to call -// wuffs_foo__bar__initialize, but the caller is responsible for eventually -// calling free on the returned pointer. That pointer is effectively a C++ -// std::unique_ptr. - -wuffs_nie__decoder* -wuffs_nie__decoder__alloc(); - -static inline wuffs_base__image_decoder* -wuffs_nie__decoder__alloc_as__wuffs_base__image_decoder() { - return (wuffs_base__image_decoder*)(wuffs_nie__decoder__alloc()); -} - -// ---------------- Upcasts - -static inline wuffs_base__image_decoder* -wuffs_nie__decoder__upcast_as__wuffs_base__image_decoder( - wuffs_nie__decoder* p) { - return (wuffs_base__image_decoder*)p; -} - -// ---------------- Public Function Prototypes - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_nie__decoder__set_quirk( - wuffs_nie__decoder* self, - uint32_t a_key, - uint64_t a_value); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_nie__decoder__decode_image_config( - wuffs_nie__decoder* self, - wuffs_base__image_config* a_dst, - wuffs_base__io_buffer* a_src); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_nie__decoder__decode_frame_config( - wuffs_nie__decoder* self, - wuffs_base__frame_config* a_dst, - wuffs_base__io_buffer* a_src); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_nie__decoder__decode_frame( - wuffs_nie__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__pixel_blend a_blend, - wuffs_base__slice_u8 a_workbuf, - wuffs_base__decode_frame_options* a_opts); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32 -wuffs_nie__decoder__frame_dirty_rect( - const wuffs_nie__decoder* self); - -WUFFS_BASE__MAYBE_STATIC uint32_t -wuffs_nie__decoder__num_animation_loops( - const wuffs_nie__decoder* self); - -WUFFS_BASE__MAYBE_STATIC uint64_t -wuffs_nie__decoder__num_decoded_frame_configs( - const wuffs_nie__decoder* self); - -WUFFS_BASE__MAYBE_STATIC uint64_t -wuffs_nie__decoder__num_decoded_frames( - const wuffs_nie__decoder* self); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_nie__decoder__restart_frame( - wuffs_nie__decoder* self, - uint64_t a_index, - uint64_t a_io_position); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct -wuffs_nie__decoder__set_report_metadata( - wuffs_nie__decoder* self, - uint32_t a_fourcc, - bool a_report); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_nie__decoder__tell_me_more( - wuffs_nie__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__more_information* a_minfo, - wuffs_base__io_buffer* a_src); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 -wuffs_nie__decoder__workbuf_len( - const wuffs_nie__decoder* self); - -#ifdef __cplusplus -} // extern "C" -#endif - -// ---------------- Struct Definitions - -// These structs' fields, and the sizeof them, are private implementation -// details that aren't guaranteed to be stable across Wuffs versions. -// -// See https://en.wikipedia.org/wiki/Opaque_pointer#C - -#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) - -struct wuffs_nie__decoder__struct { - // Do not access the private_impl's or private_data's fields directly. There - // is no API/ABI compatibility or safety guarantee if you do so. Instead, use - // the wuffs_foo__bar__baz functions. - // - // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct - // can be stack allocated when WUFFS_IMPLEMENTATION is defined. - - struct { - uint32_t magic; - uint32_t active_coroutine; - wuffs_base__vtable vtable_for__wuffs_base__image_decoder; - wuffs_base__vtable null_vtable; - - uint32_t f_pixfmt; - uint32_t f_width; - uint32_t f_height; - uint8_t f_call_sequence; - uint32_t f_dst_x; - uint32_t f_dst_y; - wuffs_base__pixel_swizzler f_swizzler; - - uint32_t p_decode_image_config[1]; - uint32_t p_do_decode_image_config[1]; - uint32_t p_decode_frame_config[1]; - uint32_t p_do_decode_frame_config[1]; - uint32_t p_decode_frame[1]; - uint32_t p_do_decode_frame[1]; - } private_impl; - - struct { - struct { - uint64_t scratch; - } s_do_decode_image_config[1]; - } private_data; - -#ifdef __cplusplus -#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR) - using unique_ptr = std::unique_ptr; - - // On failure, the alloc_etc functions return nullptr. They don't throw. - - static inline unique_ptr - alloc() { - return unique_ptr(wuffs_nie__decoder__alloc(), &free); - } - - static inline wuffs_base__image_decoder::unique_ptr - alloc_as__wuffs_base__image_decoder() { - return wuffs_base__image_decoder::unique_ptr( - wuffs_nie__decoder__alloc_as__wuffs_base__image_decoder(), &free); - } -#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR) - -#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) - // Disallow constructing or copying an object via standard C++ mechanisms, - // e.g. the "new" operator, as this struct is intentionally opaque. Its total - // size and field layout is not part of the public, stable, memory-safe API. - // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and - // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as - // their first argument) rather than tweaking bar.private_impl.qux fields. - // - // In C, we can just leave wuffs_foo__bar as an incomplete type (unless - // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in - // order to provide convenience methods. These forward on "this", so that you - // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)". - wuffs_nie__decoder__struct() = delete; - wuffs_nie__decoder__struct(const wuffs_nie__decoder__struct&) = delete; - wuffs_nie__decoder__struct& operator=( - const wuffs_nie__decoder__struct&) = delete; -#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) - -#if !defined(WUFFS_IMPLEMENTATION) - // As above, the size of the struct is not part of the public API, and unless - // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap - // allocated, not stack allocated. Its size is not intended to be known at - // compile time, but it is unfortunately divulged as a side effect of - // defining C++ convenience methods. Use "sizeof__T()", calling the function, - // instead of "sizeof T", invoking the operator. To make the two values - // different, so that passing the latter will be rejected by the initialize - // function, we add an arbitrary amount of dead weight. - uint8_t dead_weight[123000000]; // 123 MB. -#endif // !defined(WUFFS_IMPLEMENTATION) - - inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT - initialize( - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options) { - return wuffs_nie__decoder__initialize( - this, sizeof_star_self, wuffs_version, options); - } - - inline wuffs_base__image_decoder* - upcast_as__wuffs_base__image_decoder() { - return (wuffs_base__image_decoder*)this; - } - - inline wuffs_base__status - set_quirk( - uint32_t a_key, - uint64_t a_value) { - return wuffs_nie__decoder__set_quirk(this, a_key, a_value); - } - - inline wuffs_base__status - decode_image_config( - wuffs_base__image_config* a_dst, - wuffs_base__io_buffer* a_src) { - return wuffs_nie__decoder__decode_image_config(this, a_dst, a_src); - } - - inline wuffs_base__status - decode_frame_config( - wuffs_base__frame_config* a_dst, - wuffs_base__io_buffer* a_src) { - return wuffs_nie__decoder__decode_frame_config(this, a_dst, a_src); - } - - inline wuffs_base__status - decode_frame( - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__pixel_blend a_blend, - wuffs_base__slice_u8 a_workbuf, - wuffs_base__decode_frame_options* a_opts) { - return wuffs_nie__decoder__decode_frame(this, a_dst, a_src, a_blend, a_workbuf, a_opts); - } - - inline wuffs_base__rect_ie_u32 - frame_dirty_rect() const { - return wuffs_nie__decoder__frame_dirty_rect(this); - } - - inline uint32_t - num_animation_loops() const { - return wuffs_nie__decoder__num_animation_loops(this); - } - - inline uint64_t - num_decoded_frame_configs() const { - return wuffs_nie__decoder__num_decoded_frame_configs(this); - } - - inline uint64_t - num_decoded_frames() const { - return wuffs_nie__decoder__num_decoded_frames(this); - } - - inline wuffs_base__status - restart_frame( - uint64_t a_index, - uint64_t a_io_position) { - return wuffs_nie__decoder__restart_frame(this, a_index, a_io_position); - } - - inline wuffs_base__empty_struct - set_report_metadata( - uint32_t a_fourcc, - bool a_report) { - return wuffs_nie__decoder__set_report_metadata(this, a_fourcc, a_report); - } - - inline wuffs_base__status - tell_me_more( - wuffs_base__io_buffer* a_dst, - wuffs_base__more_information* a_minfo, - wuffs_base__io_buffer* a_src) { - return wuffs_nie__decoder__tell_me_more(this, a_dst, a_minfo, a_src); - } - - inline wuffs_base__range_ii_u64 - workbuf_len() const { - return wuffs_nie__decoder__workbuf_len(this); - } - -#endif // __cplusplus -}; // struct wuffs_nie__decoder__struct - -#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) - -#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NIE) || defined(WUFFS_NONMONOLITHIC) - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__ZLIB) || defined(WUFFS_NONMONOLITHIC) - -// ---------------- Status Codes - -extern const char wuffs_zlib__note__dictionary_required[]; -extern const char wuffs_zlib__error__bad_checksum[]; -extern const char wuffs_zlib__error__bad_compression_method[]; -extern const char wuffs_zlib__error__bad_compression_window_size[]; -extern const char wuffs_zlib__error__bad_parity_check[]; -extern const char wuffs_zlib__error__incorrect_dictionary[]; -extern const char wuffs_zlib__error__truncated_input[]; - -// ---------------- Public Consts - -#define WUFFS_ZLIB__QUIRK_JUST_RAW_DEFLATE 2113790976 - -#define WUFFS_ZLIB__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 1 - -// ---------------- Struct Declarations - -typedef struct wuffs_zlib__decoder__struct wuffs_zlib__decoder; - -#ifdef __cplusplus -extern "C" { -#endif - -// ---------------- Public Initializer Prototypes - -// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self, -// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)". -// -// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version. -// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options. - -wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT -wuffs_zlib__decoder__initialize( - wuffs_zlib__decoder* self, - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options); - -size_t -sizeof__wuffs_zlib__decoder(); - -// ---------------- Allocs - -// These functions allocate and initialize Wuffs structs. They return NULL if -// memory allocation fails. If they return non-NULL, there is no need to call -// wuffs_foo__bar__initialize, but the caller is responsible for eventually -// calling free on the returned pointer. That pointer is effectively a C++ -// std::unique_ptr. - -wuffs_zlib__decoder* -wuffs_zlib__decoder__alloc(); - -static inline wuffs_base__io_transformer* -wuffs_zlib__decoder__alloc_as__wuffs_base__io_transformer() { - return (wuffs_base__io_transformer*)(wuffs_zlib__decoder__alloc()); -} - -// ---------------- Upcasts - -static inline wuffs_base__io_transformer* -wuffs_zlib__decoder__upcast_as__wuffs_base__io_transformer( - wuffs_zlib__decoder* p) { - return (wuffs_base__io_transformer*)p; -} - -// ---------------- Public Function Prototypes - -WUFFS_BASE__MAYBE_STATIC uint32_t -wuffs_zlib__decoder__dictionary_id( - const wuffs_zlib__decoder* self); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct -wuffs_zlib__decoder__add_dictionary( - wuffs_zlib__decoder* self, - wuffs_base__slice_u8 a_dict); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_zlib__decoder__set_quirk( - wuffs_zlib__decoder* self, - uint32_t a_key, - uint64_t a_value); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 -wuffs_zlib__decoder__workbuf_len( - const wuffs_zlib__decoder* self); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_zlib__decoder__transform_io( - wuffs_zlib__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__slice_u8 a_workbuf); - -#ifdef __cplusplus -} // extern "C" -#endif - -// ---------------- Struct Definitions - -// These structs' fields, and the sizeof them, are private implementation -// details that aren't guaranteed to be stable across Wuffs versions. -// -// See https://en.wikipedia.org/wiki/Opaque_pointer#C - -#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) - -struct wuffs_zlib__decoder__struct { - // Do not access the private_impl's or private_data's fields directly. There - // is no API/ABI compatibility or safety guarantee if you do so. Instead, use - // the wuffs_foo__bar__baz functions. - // - // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct - // can be stack allocated when WUFFS_IMPLEMENTATION is defined. - - struct { - uint32_t magic; - uint32_t active_coroutine; - wuffs_base__vtable vtable_for__wuffs_base__io_transformer; - wuffs_base__vtable null_vtable; - - bool f_bad_call_sequence; - bool f_header_complete; - bool f_got_dictionary; - bool f_want_dictionary; - bool f_quirks[1]; - bool f_ignore_checksum; - uint32_t f_dict_id_got; - uint32_t f_dict_id_want; - - uint32_t p_transform_io[1]; - uint32_t p_do_transform_io[1]; - } private_impl; - - struct { - wuffs_adler32__hasher f_checksum; - wuffs_adler32__hasher f_dict_id_hasher; - wuffs_deflate__decoder f_flate; - - struct { - uint32_t v_checksum_got; - uint64_t scratch; - } s_do_transform_io[1]; - } private_data; - -#ifdef __cplusplus -#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR) - using unique_ptr = std::unique_ptr; - - // On failure, the alloc_etc functions return nullptr. They don't throw. - - static inline unique_ptr - alloc() { - return unique_ptr(wuffs_zlib__decoder__alloc(), &free); - } - - static inline wuffs_base__io_transformer::unique_ptr - alloc_as__wuffs_base__io_transformer() { - return wuffs_base__io_transformer::unique_ptr( - wuffs_zlib__decoder__alloc_as__wuffs_base__io_transformer(), &free); - } -#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR) - -#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) - // Disallow constructing or copying an object via standard C++ mechanisms, - // e.g. the "new" operator, as this struct is intentionally opaque. Its total - // size and field layout is not part of the public, stable, memory-safe API. - // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and - // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as - // their first argument) rather than tweaking bar.private_impl.qux fields. - // - // In C, we can just leave wuffs_foo__bar as an incomplete type (unless - // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in - // order to provide convenience methods. These forward on "this", so that you - // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)". - wuffs_zlib__decoder__struct() = delete; - wuffs_zlib__decoder__struct(const wuffs_zlib__decoder__struct&) = delete; - wuffs_zlib__decoder__struct& operator=( - const wuffs_zlib__decoder__struct&) = delete; -#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) - -#if !defined(WUFFS_IMPLEMENTATION) - // As above, the size of the struct is not part of the public API, and unless - // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap - // allocated, not stack allocated. Its size is not intended to be known at - // compile time, but it is unfortunately divulged as a side effect of - // defining C++ convenience methods. Use "sizeof__T()", calling the function, - // instead of "sizeof T", invoking the operator. To make the two values - // different, so that passing the latter will be rejected by the initialize - // function, we add an arbitrary amount of dead weight. - uint8_t dead_weight[123000000]; // 123 MB. -#endif // !defined(WUFFS_IMPLEMENTATION) - - inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT - initialize( - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options) { - return wuffs_zlib__decoder__initialize( - this, sizeof_star_self, wuffs_version, options); - } - - inline wuffs_base__io_transformer* - upcast_as__wuffs_base__io_transformer() { - return (wuffs_base__io_transformer*)this; - } - - inline uint32_t - dictionary_id() const { - return wuffs_zlib__decoder__dictionary_id(this); - } - - inline wuffs_base__empty_struct - add_dictionary( - wuffs_base__slice_u8 a_dict) { - return wuffs_zlib__decoder__add_dictionary(this, a_dict); - } - - inline wuffs_base__status - set_quirk( - uint32_t a_key, - uint64_t a_value) { - return wuffs_zlib__decoder__set_quirk(this, a_key, a_value); - } - - inline wuffs_base__range_ii_u64 - workbuf_len() const { - return wuffs_zlib__decoder__workbuf_len(this); - } - - inline wuffs_base__status - transform_io( - wuffs_base__io_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__slice_u8 a_workbuf) { - return wuffs_zlib__decoder__transform_io(this, a_dst, a_src, a_workbuf); - } - -#endif // __cplusplus -}; // struct wuffs_zlib__decoder__struct - -#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) - -#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__ZLIB) || defined(WUFFS_NONMONOLITHIC) - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__PNG) || defined(WUFFS_NONMONOLITHIC) - -// ---------------- Status Codes - -extern const char wuffs_png__error__bad_animation_sequence_number[]; -extern const char wuffs_png__error__bad_checksum[]; -extern const char wuffs_png__error__bad_chunk[]; -extern const char wuffs_png__error__bad_filter[]; -extern const char wuffs_png__error__bad_header[]; -extern const char wuffs_png__error__bad_text_chunk_not_latin_1[]; -extern const char wuffs_png__error__missing_palette[]; -extern const char wuffs_png__error__truncated_input[]; -extern const char wuffs_png__error__unsupported_cgbi_extension[]; -extern const char wuffs_png__error__unsupported_png_compression_method[]; -extern const char wuffs_png__error__unsupported_png_file[]; - -// ---------------- Public Consts - -#define WUFFS_PNG__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 2251799562027015 - -#define WUFFS_PNG__DECODER_SRC_IO_BUFFER_LENGTH_MIN_INCL 8 - -// ---------------- Struct Declarations - -typedef struct wuffs_png__decoder__struct wuffs_png__decoder; - -#ifdef __cplusplus -extern "C" { -#endif - -// ---------------- Public Initializer Prototypes - -// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self, -// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)". -// -// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version. -// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options. - -wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT -wuffs_png__decoder__initialize( - wuffs_png__decoder* self, - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options); - -size_t -sizeof__wuffs_png__decoder(); - -// ---------------- Allocs - -// These functions allocate and initialize Wuffs structs. They return NULL if -// memory allocation fails. If they return non-NULL, there is no need to call -// wuffs_foo__bar__initialize, but the caller is responsible for eventually -// calling free on the returned pointer. That pointer is effectively a C++ -// std::unique_ptr. - -wuffs_png__decoder* -wuffs_png__decoder__alloc(); - -static inline wuffs_base__image_decoder* -wuffs_png__decoder__alloc_as__wuffs_base__image_decoder() { - return (wuffs_base__image_decoder*)(wuffs_png__decoder__alloc()); -} - -// ---------------- Upcasts - -static inline wuffs_base__image_decoder* -wuffs_png__decoder__upcast_as__wuffs_base__image_decoder( - wuffs_png__decoder* p) { - return (wuffs_base__image_decoder*)p; -} - -// ---------------- Public Function Prototypes - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_png__decoder__set_quirk( - wuffs_png__decoder* self, - uint32_t a_key, - uint64_t a_value); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_png__decoder__decode_image_config( - wuffs_png__decoder* self, - wuffs_base__image_config* a_dst, - wuffs_base__io_buffer* a_src); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_png__decoder__decode_frame_config( - wuffs_png__decoder* self, - wuffs_base__frame_config* a_dst, - wuffs_base__io_buffer* a_src); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_png__decoder__decode_frame( - wuffs_png__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__pixel_blend a_blend, - wuffs_base__slice_u8 a_workbuf, - wuffs_base__decode_frame_options* a_opts); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32 -wuffs_png__decoder__frame_dirty_rect( - const wuffs_png__decoder* self); - -WUFFS_BASE__MAYBE_STATIC uint32_t -wuffs_png__decoder__num_animation_loops( - const wuffs_png__decoder* self); - -WUFFS_BASE__MAYBE_STATIC uint64_t -wuffs_png__decoder__num_decoded_frame_configs( - const wuffs_png__decoder* self); - -WUFFS_BASE__MAYBE_STATIC uint64_t -wuffs_png__decoder__num_decoded_frames( - const wuffs_png__decoder* self); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_png__decoder__restart_frame( - wuffs_png__decoder* self, - uint64_t a_index, - uint64_t a_io_position); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct -wuffs_png__decoder__set_report_metadata( - wuffs_png__decoder* self, - uint32_t a_fourcc, - bool a_report); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_png__decoder__tell_me_more( - wuffs_png__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__more_information* a_minfo, - wuffs_base__io_buffer* a_src); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 -wuffs_png__decoder__workbuf_len( - const wuffs_png__decoder* self); - -#ifdef __cplusplus -} // extern "C" -#endif - -// ---------------- Struct Definitions - -// These structs' fields, and the sizeof them, are private implementation -// details that aren't guaranteed to be stable across Wuffs versions. -// -// See https://en.wikipedia.org/wiki/Opaque_pointer#C - -#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) - -struct wuffs_png__decoder__struct { - // Do not access the private_impl's or private_data's fields directly. There - // is no API/ABI compatibility or safety guarantee if you do so. Instead, use - // the wuffs_foo__bar__baz functions. - // - // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct - // can be stack allocated when WUFFS_IMPLEMENTATION is defined. - - struct { - uint32_t magic; - uint32_t active_coroutine; - wuffs_base__vtable vtable_for__wuffs_base__image_decoder; - wuffs_base__vtable null_vtable; - - uint32_t f_width; - uint32_t f_height; - uint64_t f_pass_bytes_per_row; - uint64_t f_workbuf_wi; - uint64_t f_workbuf_hist_pos_base; - uint64_t f_overall_workbuf_length; - uint64_t f_pass_workbuf_length; - uint8_t f_call_sequence; - bool f_report_metadata_chrm; - bool f_report_metadata_exif; - bool f_report_metadata_gama; - bool f_report_metadata_iccp; - bool f_report_metadata_kvp; - bool f_report_metadata_srgb; - bool f_ignore_checksum; - uint8_t f_depth; - uint8_t f_color_type; - uint8_t f_filter_distance; - uint8_t f_interlace_pass; - bool f_seen_actl; - bool f_seen_chrm; - bool f_seen_fctl; - bool f_seen_exif; - bool f_seen_gama; - bool f_seen_iccp; - bool f_seen_idat; - bool f_seen_ihdr; - bool f_seen_plte; - bool f_seen_srgb; - bool f_seen_trns; - bool f_metadata_is_zlib_compressed; - bool f_zlib_is_dirty; - uint32_t f_chunk_type; - uint8_t f_chunk_type_array[4]; - uint32_t f_chunk_length; - uint64_t f_remap_transparency; - uint32_t f_dst_pixfmt; - uint32_t f_src_pixfmt; - uint32_t f_num_animation_frames_value; - uint32_t f_num_animation_loops_value; - uint32_t f_num_decoded_frame_configs_value; - uint32_t f_num_decoded_frames_value; - uint32_t f_frame_rect_x0; - uint32_t f_frame_rect_y0; - uint32_t f_frame_rect_x1; - uint32_t f_frame_rect_y1; - uint32_t f_first_rect_x0; - uint32_t f_first_rect_y0; - uint32_t f_first_rect_x1; - uint32_t f_first_rect_y1; - uint64_t f_frame_config_io_position; - uint64_t f_first_config_io_position; - uint64_t f_frame_duration; - uint64_t f_first_duration; - uint8_t f_frame_disposal; - uint8_t f_first_disposal; - bool f_frame_overwrite_instead_of_blend; - bool f_first_overwrite_instead_of_blend; - uint32_t f_next_animation_seq_num; - uint32_t f_metadata_flavor; - uint32_t f_metadata_fourcc; - uint64_t f_metadata_x; - uint64_t f_metadata_y; - uint64_t f_metadata_z; - uint32_t f_ztxt_ri; - uint32_t f_ztxt_wi; - uint64_t f_ztxt_hist_pos; - wuffs_base__pixel_swizzler f_swizzler; - - wuffs_base__empty_struct (*choosy_filter_1)( - wuffs_png__decoder* self, - wuffs_base__slice_u8 a_curr); - wuffs_base__empty_struct (*choosy_filter_3)( - wuffs_png__decoder* self, - wuffs_base__slice_u8 a_curr, - wuffs_base__slice_u8 a_prev); - wuffs_base__empty_struct (*choosy_filter_4)( - wuffs_png__decoder* self, - wuffs_base__slice_u8 a_curr, - wuffs_base__slice_u8 a_prev); - uint32_t p_decode_image_config[1]; - uint32_t p_do_decode_image_config[1]; - uint32_t p_decode_ihdr[1]; - uint32_t p_decode_other_chunk[1]; - uint32_t p_decode_actl[1]; - uint32_t p_decode_chrm[1]; - uint32_t p_decode_fctl[1]; - uint32_t p_decode_gama[1]; - uint32_t p_decode_iccp[1]; - uint32_t p_decode_plte[1]; - uint32_t p_decode_srgb[1]; - uint32_t p_decode_trns[1]; - uint32_t p_decode_frame_config[1]; - uint32_t p_do_decode_frame_config[1]; - uint32_t p_skip_frame[1]; - uint32_t p_decode_frame[1]; - uint32_t p_do_decode_frame[1]; - uint32_t p_decode_pass[1]; - uint32_t p_tell_me_more[1]; - uint32_t p_do_tell_me_more[1]; - wuffs_base__status (*choosy_filter_and_swizzle)( - wuffs_png__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__slice_u8 a_workbuf); - } private_impl; - - struct { - wuffs_crc32__ieee_hasher f_crc32; - wuffs_zlib__decoder f_zlib; - uint8_t f_dst_palette[1024]; - uint8_t f_src_palette[1024]; - - struct { - uint32_t v_checksum_have; - uint64_t scratch; - } s_do_decode_image_config[1]; - struct { - uint64_t scratch; - } s_decode_ihdr[1]; - struct { - uint64_t scratch; - } s_decode_other_chunk[1]; - struct { - uint64_t scratch; - } s_decode_actl[1]; - struct { - uint64_t scratch; - } s_decode_chrm[1]; - struct { - uint32_t v_x0; - uint32_t v_x1; - uint32_t v_y1; - uint64_t scratch; - } s_decode_fctl[1]; - struct { - uint64_t scratch; - } s_decode_gama[1]; - struct { - uint32_t v_num_entries; - uint32_t v_i; - uint64_t scratch; - } s_decode_plte[1]; - struct { - uint32_t v_i; - uint32_t v_n; - uint64_t scratch; - } s_decode_trns[1]; - struct { - uint64_t scratch; - } s_do_decode_frame_config[1]; - struct { - uint64_t scratch; - } s_skip_frame[1]; - struct { - uint64_t scratch; - } s_do_decode_frame[1]; - struct { - uint64_t scratch; - } s_decode_pass[1]; - struct { - wuffs_base__status v_zlib_status; - uint64_t scratch; - } s_do_tell_me_more[1]; - } private_data; - -#ifdef __cplusplus -#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR) - using unique_ptr = std::unique_ptr; - - // On failure, the alloc_etc functions return nullptr. They don't throw. - - static inline unique_ptr - alloc() { - return unique_ptr(wuffs_png__decoder__alloc(), &free); - } - - static inline wuffs_base__image_decoder::unique_ptr - alloc_as__wuffs_base__image_decoder() { - return wuffs_base__image_decoder::unique_ptr( - wuffs_png__decoder__alloc_as__wuffs_base__image_decoder(), &free); - } -#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR) - -#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) - // Disallow constructing or copying an object via standard C++ mechanisms, - // e.g. the "new" operator, as this struct is intentionally opaque. Its total - // size and field layout is not part of the public, stable, memory-safe API. - // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and - // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as - // their first argument) rather than tweaking bar.private_impl.qux fields. - // - // In C, we can just leave wuffs_foo__bar as an incomplete type (unless - // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in - // order to provide convenience methods. These forward on "this", so that you - // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)". - wuffs_png__decoder__struct() = delete; - wuffs_png__decoder__struct(const wuffs_png__decoder__struct&) = delete; - wuffs_png__decoder__struct& operator=( - const wuffs_png__decoder__struct&) = delete; -#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) - -#if !defined(WUFFS_IMPLEMENTATION) - // As above, the size of the struct is not part of the public API, and unless - // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap - // allocated, not stack allocated. Its size is not intended to be known at - // compile time, but it is unfortunately divulged as a side effect of - // defining C++ convenience methods. Use "sizeof__T()", calling the function, - // instead of "sizeof T", invoking the operator. To make the two values - // different, so that passing the latter will be rejected by the initialize - // function, we add an arbitrary amount of dead weight. - uint8_t dead_weight[123000000]; // 123 MB. -#endif // !defined(WUFFS_IMPLEMENTATION) - - inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT - initialize( - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options) { - return wuffs_png__decoder__initialize( - this, sizeof_star_self, wuffs_version, options); - } - - inline wuffs_base__image_decoder* - upcast_as__wuffs_base__image_decoder() { - return (wuffs_base__image_decoder*)this; - } - - inline wuffs_base__status - set_quirk( - uint32_t a_key, - uint64_t a_value) { - return wuffs_png__decoder__set_quirk(this, a_key, a_value); - } - - inline wuffs_base__status - decode_image_config( - wuffs_base__image_config* a_dst, - wuffs_base__io_buffer* a_src) { - return wuffs_png__decoder__decode_image_config(this, a_dst, a_src); - } - - inline wuffs_base__status - decode_frame_config( - wuffs_base__frame_config* a_dst, - wuffs_base__io_buffer* a_src) { - return wuffs_png__decoder__decode_frame_config(this, a_dst, a_src); - } - - inline wuffs_base__status - decode_frame( - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__pixel_blend a_blend, - wuffs_base__slice_u8 a_workbuf, - wuffs_base__decode_frame_options* a_opts) { - return wuffs_png__decoder__decode_frame(this, a_dst, a_src, a_blend, a_workbuf, a_opts); - } - - inline wuffs_base__rect_ie_u32 - frame_dirty_rect() const { - return wuffs_png__decoder__frame_dirty_rect(this); - } - - inline uint32_t - num_animation_loops() const { - return wuffs_png__decoder__num_animation_loops(this); - } - - inline uint64_t - num_decoded_frame_configs() const { - return wuffs_png__decoder__num_decoded_frame_configs(this); - } - - inline uint64_t - num_decoded_frames() const { - return wuffs_png__decoder__num_decoded_frames(this); - } - - inline wuffs_base__status - restart_frame( - uint64_t a_index, - uint64_t a_io_position) { - return wuffs_png__decoder__restart_frame(this, a_index, a_io_position); - } - - inline wuffs_base__empty_struct - set_report_metadata( - uint32_t a_fourcc, - bool a_report) { - return wuffs_png__decoder__set_report_metadata(this, a_fourcc, a_report); - } - - inline wuffs_base__status - tell_me_more( - wuffs_base__io_buffer* a_dst, - wuffs_base__more_information* a_minfo, - wuffs_base__io_buffer* a_src) { - return wuffs_png__decoder__tell_me_more(this, a_dst, a_minfo, a_src); - } - - inline wuffs_base__range_ii_u64 - workbuf_len() const { - return wuffs_png__decoder__workbuf_len(this); - } - -#endif // __cplusplus -}; // struct wuffs_png__decoder__struct - -#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) - -#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__PNG) || defined(WUFFS_NONMONOLITHIC) - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__TGA) || defined(WUFFS_NONMONOLITHIC) - -// ---------------- Status Codes - -extern const char wuffs_tga__error__bad_header[]; -extern const char wuffs_tga__error__bad_run_length_encoding[]; -extern const char wuffs_tga__error__truncated_input[]; -extern const char wuffs_tga__error__unsupported_tga_file[]; - -// ---------------- Public Consts - -#define WUFFS_TGA__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0 - -// ---------------- Struct Declarations - -typedef struct wuffs_tga__decoder__struct wuffs_tga__decoder; - -#ifdef __cplusplus -extern "C" { -#endif - -// ---------------- Public Initializer Prototypes - -// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self, -// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)". -// -// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version. -// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options. - -wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT -wuffs_tga__decoder__initialize( - wuffs_tga__decoder* self, - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options); - -size_t -sizeof__wuffs_tga__decoder(); - -// ---------------- Allocs - -// These functions allocate and initialize Wuffs structs. They return NULL if -// memory allocation fails. If they return non-NULL, there is no need to call -// wuffs_foo__bar__initialize, but the caller is responsible for eventually -// calling free on the returned pointer. That pointer is effectively a C++ -// std::unique_ptr. - -wuffs_tga__decoder* -wuffs_tga__decoder__alloc(); - -static inline wuffs_base__image_decoder* -wuffs_tga__decoder__alloc_as__wuffs_base__image_decoder() { - return (wuffs_base__image_decoder*)(wuffs_tga__decoder__alloc()); -} - -// ---------------- Upcasts - -static inline wuffs_base__image_decoder* -wuffs_tga__decoder__upcast_as__wuffs_base__image_decoder( - wuffs_tga__decoder* p) { - return (wuffs_base__image_decoder*)p; -} - -// ---------------- Public Function Prototypes - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_tga__decoder__set_quirk( - wuffs_tga__decoder* self, - uint32_t a_key, - uint64_t a_value); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_tga__decoder__decode_image_config( - wuffs_tga__decoder* self, - wuffs_base__image_config* a_dst, - wuffs_base__io_buffer* a_src); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_tga__decoder__decode_frame_config( - wuffs_tga__decoder* self, - wuffs_base__frame_config* a_dst, - wuffs_base__io_buffer* a_src); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_tga__decoder__decode_frame( - wuffs_tga__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__pixel_blend a_blend, - wuffs_base__slice_u8 a_workbuf, - wuffs_base__decode_frame_options* a_opts); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32 -wuffs_tga__decoder__frame_dirty_rect( - const wuffs_tga__decoder* self); - -WUFFS_BASE__MAYBE_STATIC uint32_t -wuffs_tga__decoder__num_animation_loops( - const wuffs_tga__decoder* self); - -WUFFS_BASE__MAYBE_STATIC uint64_t -wuffs_tga__decoder__num_decoded_frame_configs( - const wuffs_tga__decoder* self); - -WUFFS_BASE__MAYBE_STATIC uint64_t -wuffs_tga__decoder__num_decoded_frames( - const wuffs_tga__decoder* self); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_tga__decoder__restart_frame( - wuffs_tga__decoder* self, - uint64_t a_index, - uint64_t a_io_position); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct -wuffs_tga__decoder__set_report_metadata( - wuffs_tga__decoder* self, - uint32_t a_fourcc, - bool a_report); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_tga__decoder__tell_me_more( - wuffs_tga__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__more_information* a_minfo, - wuffs_base__io_buffer* a_src); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 -wuffs_tga__decoder__workbuf_len( - const wuffs_tga__decoder* self); - -#ifdef __cplusplus -} // extern "C" -#endif - -// ---------------- Struct Definitions - -// These structs' fields, and the sizeof them, are private implementation -// details that aren't guaranteed to be stable across Wuffs versions. -// -// See https://en.wikipedia.org/wiki/Opaque_pointer#C - -#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) - -struct wuffs_tga__decoder__struct { - // Do not access the private_impl's or private_data's fields directly. There - // is no API/ABI compatibility or safety guarantee if you do so. Instead, use - // the wuffs_foo__bar__baz functions. - // - // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct - // can be stack allocated when WUFFS_IMPLEMENTATION is defined. - - struct { - uint32_t magic; - uint32_t active_coroutine; - wuffs_base__vtable vtable_for__wuffs_base__image_decoder; - wuffs_base__vtable null_vtable; - - uint32_t f_width; - uint32_t f_height; - uint8_t f_call_sequence; - uint8_t f_header_id_length; - uint8_t f_header_color_map_type; - uint8_t f_header_image_type; - uint16_t f_header_color_map_first_entry_index; - uint16_t f_header_color_map_length; - uint8_t f_header_color_map_entry_size; - uint8_t f_header_pixel_depth; - uint8_t f_header_image_descriptor; - bool f_opaque; - uint32_t f_scratch_bytes_per_pixel; - uint32_t f_src_bytes_per_pixel; - uint32_t f_src_pixfmt; - uint64_t f_frame_config_io_position; - wuffs_base__pixel_swizzler f_swizzler; - - uint32_t p_decode_image_config[1]; - uint32_t p_do_decode_image_config[1]; - uint32_t p_decode_frame_config[1]; - uint32_t p_do_decode_frame_config[1]; - uint32_t p_decode_frame[1]; - uint32_t p_do_decode_frame[1]; - } private_impl; - - struct { - uint8_t f_dst_palette[1024]; - uint8_t f_src_palette[1024]; - uint8_t f_scratch[4]; - - struct { - uint32_t v_i; - uint64_t scratch; - } s_do_decode_image_config[1]; - struct { - uint64_t v_dst_bytes_per_pixel; - uint32_t v_dst_x; - uint32_t v_dst_y; - uint64_t v_mark; - uint32_t v_num_pixels32; - uint32_t v_lit_length; - uint32_t v_run_length; - uint64_t v_num_dst_bytes; - uint64_t scratch; - } s_do_decode_frame[1]; - } private_data; - -#ifdef __cplusplus -#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR) - using unique_ptr = std::unique_ptr; - - // On failure, the alloc_etc functions return nullptr. They don't throw. - - static inline unique_ptr - alloc() { - return unique_ptr(wuffs_tga__decoder__alloc(), &free); - } - - static inline wuffs_base__image_decoder::unique_ptr - alloc_as__wuffs_base__image_decoder() { - return wuffs_base__image_decoder::unique_ptr( - wuffs_tga__decoder__alloc_as__wuffs_base__image_decoder(), &free); - } -#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR) - -#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) - // Disallow constructing or copying an object via standard C++ mechanisms, - // e.g. the "new" operator, as this struct is intentionally opaque. Its total - // size and field layout is not part of the public, stable, memory-safe API. - // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and - // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as - // their first argument) rather than tweaking bar.private_impl.qux fields. - // - // In C, we can just leave wuffs_foo__bar as an incomplete type (unless - // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in - // order to provide convenience methods. These forward on "this", so that you - // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)". - wuffs_tga__decoder__struct() = delete; - wuffs_tga__decoder__struct(const wuffs_tga__decoder__struct&) = delete; - wuffs_tga__decoder__struct& operator=( - const wuffs_tga__decoder__struct&) = delete; -#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) - -#if !defined(WUFFS_IMPLEMENTATION) - // As above, the size of the struct is not part of the public API, and unless - // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap - // allocated, not stack allocated. Its size is not intended to be known at - // compile time, but it is unfortunately divulged as a side effect of - // defining C++ convenience methods. Use "sizeof__T()", calling the function, - // instead of "sizeof T", invoking the operator. To make the two values - // different, so that passing the latter will be rejected by the initialize - // function, we add an arbitrary amount of dead weight. - uint8_t dead_weight[123000000]; // 123 MB. -#endif // !defined(WUFFS_IMPLEMENTATION) - - inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT - initialize( - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options) { - return wuffs_tga__decoder__initialize( - this, sizeof_star_self, wuffs_version, options); - } - - inline wuffs_base__image_decoder* - upcast_as__wuffs_base__image_decoder() { - return (wuffs_base__image_decoder*)this; - } - - inline wuffs_base__status - set_quirk( - uint32_t a_key, - uint64_t a_value) { - return wuffs_tga__decoder__set_quirk(this, a_key, a_value); - } - - inline wuffs_base__status - decode_image_config( - wuffs_base__image_config* a_dst, - wuffs_base__io_buffer* a_src) { - return wuffs_tga__decoder__decode_image_config(this, a_dst, a_src); - } - - inline wuffs_base__status - decode_frame_config( - wuffs_base__frame_config* a_dst, - wuffs_base__io_buffer* a_src) { - return wuffs_tga__decoder__decode_frame_config(this, a_dst, a_src); - } - - inline wuffs_base__status - decode_frame( - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__pixel_blend a_blend, - wuffs_base__slice_u8 a_workbuf, - wuffs_base__decode_frame_options* a_opts) { - return wuffs_tga__decoder__decode_frame(this, a_dst, a_src, a_blend, a_workbuf, a_opts); - } - - inline wuffs_base__rect_ie_u32 - frame_dirty_rect() const { - return wuffs_tga__decoder__frame_dirty_rect(this); - } - - inline uint32_t - num_animation_loops() const { - return wuffs_tga__decoder__num_animation_loops(this); - } - - inline uint64_t - num_decoded_frame_configs() const { - return wuffs_tga__decoder__num_decoded_frame_configs(this); - } - - inline uint64_t - num_decoded_frames() const { - return wuffs_tga__decoder__num_decoded_frames(this); - } - - inline wuffs_base__status - restart_frame( - uint64_t a_index, - uint64_t a_io_position) { - return wuffs_tga__decoder__restart_frame(this, a_index, a_io_position); - } - - inline wuffs_base__empty_struct - set_report_metadata( - uint32_t a_fourcc, - bool a_report) { - return wuffs_tga__decoder__set_report_metadata(this, a_fourcc, a_report); - } - - inline wuffs_base__status - tell_me_more( - wuffs_base__io_buffer* a_dst, - wuffs_base__more_information* a_minfo, - wuffs_base__io_buffer* a_src) { - return wuffs_tga__decoder__tell_me_more(this, a_dst, a_minfo, a_src); - } - - inline wuffs_base__range_ii_u64 - workbuf_len() const { - return wuffs_tga__decoder__workbuf_len(this); - } - -#endif // __cplusplus -}; // struct wuffs_tga__decoder__struct - -#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) - -#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__TGA) || defined(WUFFS_NONMONOLITHIC) - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__WBMP) || defined(WUFFS_NONMONOLITHIC) - -// ---------------- Status Codes - -extern const char wuffs_wbmp__error__bad_header[]; -extern const char wuffs_wbmp__error__truncated_input[]; - -// ---------------- Public Consts - -#define WUFFS_WBMP__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE 0 - -// ---------------- Struct Declarations - -typedef struct wuffs_wbmp__decoder__struct wuffs_wbmp__decoder; - -#ifdef __cplusplus -extern "C" { -#endif - -// ---------------- Public Initializer Prototypes - -// For any given "wuffs_foo__bar* self", "wuffs_foo__bar__initialize(self, -// etc)" should be called before any other "wuffs_foo__bar__xxx(self, etc)". -// -// Pass sizeof(*self) and WUFFS_VERSION for sizeof_star_self and wuffs_version. -// Pass 0 (or some combination of WUFFS_INITIALIZE__XXX) for options. - -wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT -wuffs_wbmp__decoder__initialize( - wuffs_wbmp__decoder* self, - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options); - -size_t -sizeof__wuffs_wbmp__decoder(); - -// ---------------- Allocs - -// These functions allocate and initialize Wuffs structs. They return NULL if -// memory allocation fails. If they return non-NULL, there is no need to call -// wuffs_foo__bar__initialize, but the caller is responsible for eventually -// calling free on the returned pointer. That pointer is effectively a C++ -// std::unique_ptr. - -wuffs_wbmp__decoder* -wuffs_wbmp__decoder__alloc(); - -static inline wuffs_base__image_decoder* -wuffs_wbmp__decoder__alloc_as__wuffs_base__image_decoder() { - return (wuffs_base__image_decoder*)(wuffs_wbmp__decoder__alloc()); -} - -// ---------------- Upcasts - -static inline wuffs_base__image_decoder* -wuffs_wbmp__decoder__upcast_as__wuffs_base__image_decoder( - wuffs_wbmp__decoder* p) { - return (wuffs_base__image_decoder*)p; -} - -// ---------------- Public Function Prototypes - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_wbmp__decoder__set_quirk( - wuffs_wbmp__decoder* self, - uint32_t a_key, - uint64_t a_value); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_wbmp__decoder__decode_image_config( - wuffs_wbmp__decoder* self, - wuffs_base__image_config* a_dst, - wuffs_base__io_buffer* a_src); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_wbmp__decoder__decode_frame_config( - wuffs_wbmp__decoder* self, - wuffs_base__frame_config* a_dst, - wuffs_base__io_buffer* a_src); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_wbmp__decoder__decode_frame( - wuffs_wbmp__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__pixel_blend a_blend, - wuffs_base__slice_u8 a_workbuf, - wuffs_base__decode_frame_options* a_opts); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32 -wuffs_wbmp__decoder__frame_dirty_rect( - const wuffs_wbmp__decoder* self); - -WUFFS_BASE__MAYBE_STATIC uint32_t -wuffs_wbmp__decoder__num_animation_loops( - const wuffs_wbmp__decoder* self); - -WUFFS_BASE__MAYBE_STATIC uint64_t -wuffs_wbmp__decoder__num_decoded_frame_configs( - const wuffs_wbmp__decoder* self); - -WUFFS_BASE__MAYBE_STATIC uint64_t -wuffs_wbmp__decoder__num_decoded_frames( - const wuffs_wbmp__decoder* self); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_wbmp__decoder__restart_frame( - wuffs_wbmp__decoder* self, - uint64_t a_index, - uint64_t a_io_position); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct -wuffs_wbmp__decoder__set_report_metadata( - wuffs_wbmp__decoder* self, - uint32_t a_fourcc, - bool a_report); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_wbmp__decoder__tell_me_more( - wuffs_wbmp__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__more_information* a_minfo, - wuffs_base__io_buffer* a_src); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 -wuffs_wbmp__decoder__workbuf_len( - const wuffs_wbmp__decoder* self); - -#ifdef __cplusplus -} // extern "C" -#endif - -// ---------------- Struct Definitions - -// These structs' fields, and the sizeof them, are private implementation -// details that aren't guaranteed to be stable across Wuffs versions. -// -// See https://en.wikipedia.org/wiki/Opaque_pointer#C - -#if defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) - -struct wuffs_wbmp__decoder__struct { - // Do not access the private_impl's or private_data's fields directly. There - // is no API/ABI compatibility or safety guarantee if you do so. Instead, use - // the wuffs_foo__bar__baz functions. - // - // It is a struct, not a struct*, so that the outermost wuffs_foo__bar struct - // can be stack allocated when WUFFS_IMPLEMENTATION is defined. - - struct { - uint32_t magic; - uint32_t active_coroutine; - wuffs_base__vtable vtable_for__wuffs_base__image_decoder; - wuffs_base__vtable null_vtable; - - uint32_t f_width; - uint32_t f_height; - uint8_t f_call_sequence; - uint64_t f_frame_config_io_position; - wuffs_base__pixel_swizzler f_swizzler; - - uint32_t p_decode_image_config[1]; - uint32_t p_do_decode_image_config[1]; - uint32_t p_decode_frame_config[1]; - uint32_t p_do_decode_frame_config[1]; - uint32_t p_decode_frame[1]; - uint32_t p_do_decode_frame[1]; - } private_impl; - - struct { - struct { - uint32_t v_i; - uint32_t v_p; - } s_do_decode_image_config[1]; - struct { - uint64_t v_dst_bytes_per_pixel; - uint32_t v_dst_x; - uint32_t v_dst_y; - uint8_t v_src[1]; - uint8_t v_c; - } s_do_decode_frame[1]; - } private_data; - -#ifdef __cplusplus -#if defined(WUFFS_BASE__HAVE_UNIQUE_PTR) - using unique_ptr = std::unique_ptr; - - // On failure, the alloc_etc functions return nullptr. They don't throw. - - static inline unique_ptr - alloc() { - return unique_ptr(wuffs_wbmp__decoder__alloc(), &free); - } - - static inline wuffs_base__image_decoder::unique_ptr - alloc_as__wuffs_base__image_decoder() { - return wuffs_base__image_decoder::unique_ptr( - wuffs_wbmp__decoder__alloc_as__wuffs_base__image_decoder(), &free); - } -#endif // defined(WUFFS_BASE__HAVE_UNIQUE_PTR) - -#if defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) - // Disallow constructing or copying an object via standard C++ mechanisms, - // e.g. the "new" operator, as this struct is intentionally opaque. Its total - // size and field layout is not part of the public, stable, memory-safe API. - // Use malloc or memcpy and the sizeof__wuffs_foo__bar function instead, and - // call wuffs_foo__bar__baz methods (which all take a "this"-like pointer as - // their first argument) rather than tweaking bar.private_impl.qux fields. - // - // In C, we can just leave wuffs_foo__bar as an incomplete type (unless - // WUFFS_IMPLEMENTATION is #define'd). In C++, we define a complete type in - // order to provide convenience methods. These forward on "this", so that you - // can write "bar->baz(etc)" instead of "wuffs_foo__bar__baz(bar, etc)". - wuffs_wbmp__decoder__struct() = delete; - wuffs_wbmp__decoder__struct(const wuffs_wbmp__decoder__struct&) = delete; - wuffs_wbmp__decoder__struct& operator=( - const wuffs_wbmp__decoder__struct&) = delete; -#endif // defined(WUFFS_BASE__HAVE_EQ_DELETE) && !defined(WUFFS_IMPLEMENTATION) - -#if !defined(WUFFS_IMPLEMENTATION) - // As above, the size of the struct is not part of the public API, and unless - // WUFFS_IMPLEMENTATION is #define'd, this struct type T should be heap - // allocated, not stack allocated. Its size is not intended to be known at - // compile time, but it is unfortunately divulged as a side effect of - // defining C++ convenience methods. Use "sizeof__T()", calling the function, - // instead of "sizeof T", invoking the operator. To make the two values - // different, so that passing the latter will be rejected by the initialize - // function, we add an arbitrary amount of dead weight. - uint8_t dead_weight[123000000]; // 123 MB. -#endif // !defined(WUFFS_IMPLEMENTATION) - - inline wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT - initialize( - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options) { - return wuffs_wbmp__decoder__initialize( - this, sizeof_star_self, wuffs_version, options); - } - - inline wuffs_base__image_decoder* - upcast_as__wuffs_base__image_decoder() { - return (wuffs_base__image_decoder*)this; - } - - inline wuffs_base__status - set_quirk( - uint32_t a_key, - uint64_t a_value) { - return wuffs_wbmp__decoder__set_quirk(this, a_key, a_value); - } - - inline wuffs_base__status - decode_image_config( - wuffs_base__image_config* a_dst, - wuffs_base__io_buffer* a_src) { - return wuffs_wbmp__decoder__decode_image_config(this, a_dst, a_src); - } - - inline wuffs_base__status - decode_frame_config( - wuffs_base__frame_config* a_dst, - wuffs_base__io_buffer* a_src) { - return wuffs_wbmp__decoder__decode_frame_config(this, a_dst, a_src); - } - - inline wuffs_base__status - decode_frame( - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__pixel_blend a_blend, - wuffs_base__slice_u8 a_workbuf, - wuffs_base__decode_frame_options* a_opts) { - return wuffs_wbmp__decoder__decode_frame(this, a_dst, a_src, a_blend, a_workbuf, a_opts); - } - - inline wuffs_base__rect_ie_u32 - frame_dirty_rect() const { - return wuffs_wbmp__decoder__frame_dirty_rect(this); - } - - inline uint32_t - num_animation_loops() const { - return wuffs_wbmp__decoder__num_animation_loops(this); - } - - inline uint64_t - num_decoded_frame_configs() const { - return wuffs_wbmp__decoder__num_decoded_frame_configs(this); - } - - inline uint64_t - num_decoded_frames() const { - return wuffs_wbmp__decoder__num_decoded_frames(this); - } - - inline wuffs_base__status - restart_frame( - uint64_t a_index, - uint64_t a_io_position) { - return wuffs_wbmp__decoder__restart_frame(this, a_index, a_io_position); - } - - inline wuffs_base__empty_struct - set_report_metadata( - uint32_t a_fourcc, - bool a_report) { - return wuffs_wbmp__decoder__set_report_metadata(this, a_fourcc, a_report); - } - - inline wuffs_base__status - tell_me_more( - wuffs_base__io_buffer* a_dst, - wuffs_base__more_information* a_minfo, - wuffs_base__io_buffer* a_src) { - return wuffs_wbmp__decoder__tell_me_more(this, a_dst, a_minfo, a_src); - } - - inline wuffs_base__range_ii_u64 - workbuf_len() const { - return wuffs_wbmp__decoder__workbuf_len(this); - } - -#endif // __cplusplus -}; // struct wuffs_wbmp__decoder__struct - -#endif // defined(__cplusplus) || defined(WUFFS_IMPLEMENTATION) - -#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__WBMP) || defined(WUFFS_NONMONOLITHIC) - -#if defined(__cplusplus) && defined(WUFFS_BASE__HAVE_UNIQUE_PTR) - -// ---------------- Auxiliary - Base - -// Auxiliary code is discussed at -// https://github.com/google/wuffs/blob/main/doc/note/auxiliary-code.md - -#include - -#include - -namespace wuffs_aux { - -using IOBuffer = wuffs_base__io_buffer; - -// MemOwner represents ownership of some memory. Dynamically allocated memory -// (e.g. from malloc or new) is typically paired with free or delete, invoked -// when the std::unique_ptr is destroyed. Statically allocated memory might use -// MemOwner(nullptr, &free), even if that statically allocated memory is not -// nullptr, since calling free(nullptr) is a no-op. -using MemOwner = std::unique_ptr; - -namespace sync_io { - -// -------- - -// DynIOBuffer is an IOBuffer that is backed by a dynamically sized byte array. -// It owns that backing array and will free it in its destructor. -// -// The array size can be explicitly extended (by calling the grow method) but, -// unlike a C++ std::vector, there is no implicit extension (e.g. by calling -// std::vector::insert) and its maximum size is capped by the max_incl -// constructor argument. -// -// It contains an IOBuffer-typed field whose reader side provides access to -// previously written bytes and whose writer side provides access to the -// allocated but not-yet-written-to slack space. For Go programmers, this slack -// space is roughly analogous to the s[len(s):cap(s)] space of a slice s. -class DynIOBuffer { - public: - enum GrowResult { - OK = 0, - FailedMaxInclExceeded = 1, - FailedOutOfMemory = 2, - }; - - // m_buf holds the dynamically sized byte array and its read/write indexes: - // - m_buf.meta.wi is roughly analogous to a Go slice's length. - // - m_buf.data.len is roughly analogous to a Go slice's capacity. It is - // also equal to the m_buf.data.ptr malloc/realloc size. - // - // Users should not modify the m_buf.data.ptr or m_buf.data.len fields (as - // they are conceptually private to this class), but they can modify the - // bytes referenced by that pointer-length pair (e.g. compactions). - IOBuffer m_buf; - - // m_max_incl is an inclusive upper bound on the backing array size. - const uint64_t m_max_incl; - - // Constructor and destructor. - explicit DynIOBuffer(uint64_t max_incl); - ~DynIOBuffer(); - - // Drop frees the byte array and resets m_buf. The DynIOBuffer can still be - // used after a drop call. It just restarts from zero. - void drop(); - - // grow ensures that the byte array size is at least min_incl and at most - // max_incl. It returns FailedMaxInclExceeded if that would require - // allocating more than max_incl bytes, including the case where (min_incl > - // max_incl). It returns FailedOutOfMemory if memory allocation failed. - GrowResult grow(uint64_t min_incl); - - private: - // Delete the copy and assign constructors. - DynIOBuffer(const DynIOBuffer&) = delete; - DynIOBuffer& operator=(const DynIOBuffer&) = delete; - - static uint64_t round_up(uint64_t min_incl, uint64_t max_incl); -}; - -// -------- - -class Input { - public: - virtual ~Input(); - - virtual IOBuffer* BringsItsOwnIOBuffer(); - virtual std::string CopyIn(IOBuffer* dst) = 0; -}; - -// -------- - -// FileInput is an Input that reads from a file source. -// -// It does not take responsibility for closing the file when done. -class FileInput : public Input { - public: - FileInput(FILE* f); - - virtual std::string CopyIn(IOBuffer* dst); - - private: - FILE* m_f; - - // Delete the copy and assign constructors. - FileInput(const FileInput&) = delete; - FileInput& operator=(const FileInput&) = delete; -}; - -// -------- - -// MemoryInput is an Input that reads from an in-memory source. -// -// It does not take responsibility for freeing the memory when done. -class MemoryInput : public Input { - public: - MemoryInput(const char* ptr, size_t len); - MemoryInput(const uint8_t* ptr, size_t len); - - virtual IOBuffer* BringsItsOwnIOBuffer(); - virtual std::string CopyIn(IOBuffer* dst); - - private: - IOBuffer m_io; - - // Delete the copy and assign constructors. - MemoryInput(const MemoryInput&) = delete; - MemoryInput& operator=(const MemoryInput&) = delete; -}; - -// -------- - -} // namespace sync_io - -} // namespace wuffs_aux - -// ---------------- Auxiliary - CBOR - -namespace wuffs_aux { - -struct DecodeCborResult { - DecodeCborResult(std::string&& error_message0, uint64_t cursor_position0); - - std::string error_message; - uint64_t cursor_position; -}; - -class DecodeCborCallbacks { - public: - virtual ~DecodeCborCallbacks(); - - // AppendXxx are called for leaf nodes: literals, numbers, strings, etc. - - virtual std::string AppendNull() = 0; - virtual std::string AppendUndefined() = 0; - virtual std::string AppendBool(bool val) = 0; - virtual std::string AppendF64(double val) = 0; - virtual std::string AppendI64(int64_t val) = 0; - virtual std::string AppendU64(uint64_t val) = 0; - virtual std::string AppendByteString(std::string&& val) = 0; - virtual std::string AppendTextString(std::string&& val) = 0; - virtual std::string AppendMinus1MinusX(uint64_t val) = 0; - virtual std::string AppendCborSimpleValue(uint8_t val) = 0; - virtual std::string AppendCborTag(uint64_t val) = 0; - - // Push and Pop are called for container nodes: CBOR arrays (lists) and CBOR - // maps (dictionaries). - // - // The flags bits combine exactly one of: - // - WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_NONE - // - WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_LIST - // - WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_DICT - // and exactly one of: - // - WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_NONE - // - WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_LIST - // - WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_DICT - - virtual std::string Push(uint32_t flags) = 0; - virtual std::string Pop(uint32_t flags) = 0; - - // Done is always the last Callback method called by DecodeCbor, whether or - // not parsing the input as CBOR encountered an error. Even when successful, - // trailing data may remain in input and buffer. - // - // Do not keep a reference to buffer or buffer.data.ptr after Done returns, - // as DecodeCbor may then de-allocate the backing array. - // - // The default Done implementation is a no-op. - virtual void // - Done(DecodeCborResult& result, sync_io::Input& input, IOBuffer& buffer); -}; - -// The FooArgBar types add structure to Foo's optional arguments. They wrap -// inner representations for several reasons: -// - It provides a home for the DefaultValue static method, for Foo callers -// that want to override some but not all optional arguments. -// - It provides the "Bar" name at Foo call sites, which can help self- -// document Foo calls with many arguemnts. -// - It provides some type safety against accidentally transposing or omitting -// adjacent fundamentally-numeric-typed optional arguments. - -// DecodeCborArgQuirks wraps an optional argument to DecodeCbor. -struct DecodeCborArgQuirks { - explicit DecodeCborArgQuirks(wuffs_base__slice_u32 repr0); - explicit DecodeCborArgQuirks(uint32_t* ptr, size_t len); - - // DefaultValue returns an empty slice. - static DecodeCborArgQuirks DefaultValue(); - - wuffs_base__slice_u32 repr; -}; - -// DecodeCbor calls callbacks based on the CBOR-formatted data in input. -// -// On success, the returned error_message is empty and cursor_position counts -// the number of bytes consumed. On failure, error_message is non-empty and -// cursor_position is the location of the error. That error may be a content -// error (invalid CBOR) or an input error (e.g. network failure). -DecodeCborResult // -DecodeCbor(DecodeCborCallbacks& callbacks, - sync_io::Input& input, - DecodeCborArgQuirks quirks = DecodeCborArgQuirks::DefaultValue()); - -} // namespace wuffs_aux - -// ---------------- Auxiliary - Image - -namespace wuffs_aux { - -struct DecodeImageResult { - DecodeImageResult(MemOwner&& pixbuf_mem_owner0, - wuffs_base__pixel_buffer pixbuf0, - std::string&& error_message0); - DecodeImageResult(std::string&& error_message0); - - MemOwner pixbuf_mem_owner; - wuffs_base__pixel_buffer pixbuf; - std::string error_message; -}; - -// DecodeImageCallbacks are the callbacks given to DecodeImage. They are always -// called in this order: -// 1. SelectDecoder -// 2. HandleMetadata -// 3. SelectPixfmt -// 4. AllocPixbuf -// 5. AllocWorkbuf -// 6. Done -// -// It may return early - the third callback might not be invoked if the second -// one fails - but the final callback (Done) is always invoked. -class DecodeImageCallbacks { - public: - // AllocPixbufResult holds a memory allocation (the result of malloc or new, - // a statically allocated pointer, etc), or an error message. The memory is - // de-allocated when mem_owner goes out of scope and is destroyed. - struct AllocPixbufResult { - AllocPixbufResult(MemOwner&& mem_owner0, wuffs_base__pixel_buffer pixbuf0); - AllocPixbufResult(std::string&& error_message0); - - MemOwner mem_owner; - wuffs_base__pixel_buffer pixbuf; - std::string error_message; - }; - - // AllocWorkbufResult holds a memory allocation (the result of malloc or new, - // a statically allocated pointer, etc), or an error message. The memory is - // de-allocated when mem_owner goes out of scope and is destroyed. - struct AllocWorkbufResult { - AllocWorkbufResult(MemOwner&& mem_owner0, wuffs_base__slice_u8 workbuf0); - AllocWorkbufResult(std::string&& error_message0); - - MemOwner mem_owner; - wuffs_base__slice_u8 workbuf; - std::string error_message; - }; - - virtual ~DecodeImageCallbacks(); - - // SelectDecoder returns the image decoder for the input data's file format. - // Returning a nullptr means failure (DecodeImage_UnsupportedImageFormat). - // - // Common formats will have a FourCC value in the range [1 ..= 0x7FFF_FFFF], - // such as WUFFS_BASE__FOURCC__JPEG. A zero FourCC value means that Wuffs' - // standard library did not recognize the image format but if SelectDecoder - // was overridden, it may examine the input data's starting bytes and still - // provide its own image decoder, e.g. for an exotic image file format that's - // not in Wuffs' standard library. The prefix_etc fields have the same - // meaning as wuffs_base__magic_number_guess_fourcc arguments. SelectDecoder - // implementations should not modify prefix_data's contents. - // - // SelectDecoder might be called more than once, since some image file - // formats can wrap others. For example, a nominal BMP file can actually - // contain a JPEG or a PNG. - // - // The default SelectDecoder accepts the FOURCC codes listed below. For - // modular builds (i.e. when #define'ing WUFFS_CONFIG__MODULES), acceptance - // of the ETC file format is optional (for each value of ETC) and depends on - // the corresponding module to be enabled at compile time (i.e. #define'ing - // WUFFS_CONFIG__MODULE__ETC). - // - WUFFS_BASE__FOURCC__BMP - // - WUFFS_BASE__FOURCC__GIF - // - WUFFS_BASE__FOURCC__JPEG - // - WUFFS_BASE__FOURCC__NIE - // - WUFFS_BASE__FOURCC__NPBM - // - WUFFS_BASE__FOURCC__PNG - // - WUFFS_BASE__FOURCC__TGA - // - WUFFS_BASE__FOURCC__WBMP - virtual wuffs_base__image_decoder::unique_ptr // - SelectDecoder(uint32_t fourcc, - wuffs_base__slice_u8 prefix_data, - bool prefix_closed); - - // HandleMetadata acknowledges image metadata. minfo.flavor will be one of: - // - WUFFS_BASE__MORE_INFORMATION__FLAVOR__METADATA_RAW_PASSTHROUGH - // - WUFFS_BASE__MORE_INFORMATION__FLAVOR__METADATA_PARSED - // If it is ETC__METADATA_RAW_ETC then raw contains the metadata bytes. Those - // bytes should not be retained beyond the the HandleMetadata call. - // - // minfo.metadata__fourcc() will typically match one of the - // DecodeImageArgFlags bits. For example, if (REPORT_METADATA_CHRM | - // REPORT_METADATA_GAMA) was passed to DecodeImage then the metadata FourCC - // will be either WUFFS_BASE__FOURCC__CHRM or WUFFS_BASE__FOURCC__GAMA. - // - // It returns an error message, or an empty string on success. - virtual std::string // - HandleMetadata(const wuffs_base__more_information& minfo, - wuffs_base__slice_u8 raw); - - // SelectPixfmt returns the destination pixel format for AllocPixbuf. It - // should return wuffs_base__make_pixel_format(etc) called with one of: - // - WUFFS_BASE__PIXEL_FORMAT__BGR_565 - // - WUFFS_BASE__PIXEL_FORMAT__BGR - // - WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL - // - WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE - // - WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL - // - WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL - // - WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL - // or return image_config.pixcfg.pixel_format(). The latter means to use the - // image file's natural pixel format. For example, GIF images' natural pixel - // format is an indexed one. - // - // Returning otherwise means failure (DecodeImage_UnsupportedPixelFormat). - // - // The default SelectPixfmt implementation returns - // wuffs_base__make_pixel_format(WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL) which - // is 4 bytes per pixel (8 bits per channel × 4 channels). - virtual wuffs_base__pixel_format // - SelectPixfmt(const wuffs_base__image_config& image_config); - - // AllocPixbuf allocates the pixel buffer. - // - // allow_uninitialized_memory will be true if a valid background_color was - // passed to DecodeImage, since the pixel buffer's contents will be - // overwritten with that color after AllocPixbuf returns. - // - // The default AllocPixbuf implementation allocates either uninitialized or - // zeroed memory. Zeroed memory typically corresponds to filling with opaque - // black or transparent black, depending on the pixel format. - virtual AllocPixbufResult // - AllocPixbuf(const wuffs_base__image_config& image_config, - bool allow_uninitialized_memory); - - // AllocWorkbuf allocates the work buffer. The allocated buffer's length - // should be at least len_range.min_incl, but larger allocations (up to - // len_range.max_incl) may have better performance (by using more memory). - // - // The default AllocWorkbuf implementation allocates len_range.max_incl bytes - // of either uninitialized or zeroed memory. - virtual AllocWorkbufResult // - AllocWorkbuf(wuffs_base__range_ii_u64 len_range, - bool allow_uninitialized_memory); - - // Done is always the last Callback method called by DecodeImage, whether or - // not parsing the input encountered an error. Even when successful, trailing - // data may remain in input and buffer. - // - // The image_decoder is the one returned by SelectDecoder (if SelectDecoder - // was successful), or a no-op unique_ptr otherwise. Like any unique_ptr, - // ownership moves to the Done implementation. - // - // Do not keep a reference to buffer or buffer.data.ptr after Done returns, - // as DecodeImage may then de-allocate the backing array. - // - // The default Done implementation is a no-op, other than running the - // image_decoder unique_ptr destructor. - virtual void // - Done(DecodeImageResult& result, - sync_io::Input& input, - IOBuffer& buffer, - wuffs_base__image_decoder::unique_ptr image_decoder); -}; - -extern const char DecodeImage_BufferIsTooShort[]; -extern const char DecodeImage_MaxInclDimensionExceeded[]; -extern const char DecodeImage_MaxInclMetadataLengthExceeded[]; -extern const char DecodeImage_OutOfMemory[]; -extern const char DecodeImage_UnexpectedEndOfFile[]; -extern const char DecodeImage_UnsupportedImageFormat[]; -extern const char DecodeImage_UnsupportedMetadata[]; -extern const char DecodeImage_UnsupportedPixelBlend[]; -extern const char DecodeImage_UnsupportedPixelConfiguration[]; -extern const char DecodeImage_UnsupportedPixelFormat[]; - -// The FooArgBar types add structure to Foo's optional arguments. They wrap -// inner representations for several reasons: -// - It provides a home for the DefaultValue static method, for Foo callers -// that want to override some but not all optional arguments. -// - It provides the "Bar" name at Foo call sites, which can help self- -// document Foo calls with many arguemnts. -// - It provides some type safety against accidentally transposing or omitting -// adjacent fundamentally-numeric-typed optional arguments. - -// DecodeImageArgQuirks wraps an optional argument to DecodeImage. -struct DecodeImageArgQuirks { - explicit DecodeImageArgQuirks(wuffs_base__slice_u32 repr0); - explicit DecodeImageArgQuirks(uint32_t* ptr, size_t len); - - // DefaultValue returns an empty slice. - static DecodeImageArgQuirks DefaultValue(); - - wuffs_base__slice_u32 repr; -}; - -// DecodeImageArgFlags wraps an optional argument to DecodeImage. -struct DecodeImageArgFlags { - explicit DecodeImageArgFlags(uint64_t repr0); - - // DefaultValue returns 0. - static DecodeImageArgFlags DefaultValue(); - - // TODO: support all of the REPORT_METADATA_ETC flags, not just CHRM, EXIF, - // GAMA, ICCP, KVP, SRGB and XMP. - - // Background Color. - static constexpr uint64_t REPORT_METADATA_BGCL = 0x0001; - // Primary Chromaticities and White Point. - static constexpr uint64_t REPORT_METADATA_CHRM = 0x0002; - // Exchangeable Image File Format. - static constexpr uint64_t REPORT_METADATA_EXIF = 0x0004; - // Gamma Correction. - static constexpr uint64_t REPORT_METADATA_GAMA = 0x0008; - // International Color Consortium Profile. - static constexpr uint64_t REPORT_METADATA_ICCP = 0x0010; - // Key-Value Pair. - // - // For PNG files, this includes iTXt, tEXt and zTXt chunks. In the - // HandleMetadata callback, the raw argument contains UTF-8 strings. - static constexpr uint64_t REPORT_METADATA_KVP = 0x0020; - // Modification Time. - static constexpr uint64_t REPORT_METADATA_MTIM = 0x0040; - // Offset (2-Dimensional). - static constexpr uint64_t REPORT_METADATA_OFS2 = 0x0080; - // Physical Dimensions. - static constexpr uint64_t REPORT_METADATA_PHYD = 0x0100; - // Standard Red Green Blue (Rendering Intent). - static constexpr uint64_t REPORT_METADATA_SRGB = 0x0200; - // Extensible Metadata Platform. - static constexpr uint64_t REPORT_METADATA_XMP = 0x0400; - - uint64_t repr; -}; - -// DecodeImageArgPixelBlend wraps an optional argument to DecodeImage. -struct DecodeImageArgPixelBlend { - explicit DecodeImageArgPixelBlend(wuffs_base__pixel_blend repr0); - - // DefaultValue returns WUFFS_BASE__PIXEL_BLEND__SRC. - static DecodeImageArgPixelBlend DefaultValue(); - - wuffs_base__pixel_blend repr; -}; - -// DecodeImageArgBackgroundColor wraps an optional argument to DecodeImage. -struct DecodeImageArgBackgroundColor { - explicit DecodeImageArgBackgroundColor( - wuffs_base__color_u32_argb_premul repr0); - - // DefaultValue returns 1, an invalid wuffs_base__color_u32_argb_premul. - static DecodeImageArgBackgroundColor DefaultValue(); - - wuffs_base__color_u32_argb_premul repr; -}; - -// DecodeImageArgMaxInclDimension wraps an optional argument to DecodeImage. -struct DecodeImageArgMaxInclDimension { - explicit DecodeImageArgMaxInclDimension(uint32_t repr0); - - // DefaultValue returns 1048575 = 0x000F_FFFF, more than 1 million pixels. - static DecodeImageArgMaxInclDimension DefaultValue(); - - uint32_t repr; -}; - -// DecodeImageArgMaxInclMetadataLength wraps an optional argument to -// DecodeImage. -struct DecodeImageArgMaxInclMetadataLength { - explicit DecodeImageArgMaxInclMetadataLength(uint64_t repr0); - - // DefaultValue returns 16777215 = 0x00FF_FFFF, one less than 16 MiB. - static DecodeImageArgMaxInclMetadataLength DefaultValue(); - - uint64_t repr; -}; - -// DecodeImage decodes the image data in input. A variety of image file formats -// can be decoded, depending on what callbacks.SelectDecoder returns. -// -// For animated formats, only the first frame is returned, since the API is -// simpler for synchronous I/O and having DecodeImage only return when -// completely done, but rendering animation often involves handling other -// events in between animation frames. To decode multiple frames of animated -// images, or for asynchronous I/O (e.g. when decoding an image streamed over -// the network), use Wuffs' lower level C API instead of its higher level, -// simplified C++ API (the wuffs_aux API). -// -// The DecodeImageResult's fields depend on whether decoding succeeded: -// - On total success, the error_message is empty and pixbuf.pixcfg.is_valid() -// is true. -// - On partial success (e.g. the input file was truncated but we are still -// able to decode some of the pixels), error_message is non-empty but -// pixbuf.pixcfg.is_valid() is still true. It is up to the caller whether to -// accept or reject partial success. -// - On failure, the error_message is non_empty and pixbuf.pixcfg.is_valid() -// is false. -// -// The callbacks allocate the pixel buffer memory and work buffer memory. On -// success, pixel buffer memory ownership is passed to the DecodeImage caller -// as the returned pixbuf_mem_owner. Regardless of success or failure, the work -// buffer memory is deleted. -// -// The pixel_blend (one of the constants listed below) determines how to -// composite the decoded image over the pixel buffer's original pixels (as -// returned by callbacks.AllocPixbuf): -// - WUFFS_BASE__PIXEL_BLEND__SRC -// - WUFFS_BASE__PIXEL_BLEND__SRC_OVER -// -// The background_color is used to fill the pixel buffer after -// callbacks.AllocPixbuf returns, if it is valid in the -// wuffs_base__color_u32_argb_premul__is_valid sense. The default value, -// 0x0000_0001, is not valid since its Blue channel value (0x01) is greater -// than its Alpha channel value (0x00). A valid background_color will typically -// be overwritten when pixel_blend is WUFFS_BASE__PIXEL_BLEND__SRC, but might -// still be visible on partial (not total) success or when pixel_blend is -// WUFFS_BASE__PIXEL_BLEND__SRC_OVER and the decoded image is not fully opaque. -// -// Decoding fails (with DecodeImage_MaxInclDimensionExceeded) if the image's -// width or height is greater than max_incl_dimension or if any opted-in (via -// flags bits) metadata is longer than max_incl_metadata_length. -DecodeImageResult // -DecodeImage(DecodeImageCallbacks& callbacks, - sync_io::Input& input, - DecodeImageArgQuirks quirks = DecodeImageArgQuirks::DefaultValue(), - DecodeImageArgFlags flags = DecodeImageArgFlags::DefaultValue(), - DecodeImageArgPixelBlend pixel_blend = - DecodeImageArgPixelBlend::DefaultValue(), - DecodeImageArgBackgroundColor background_color = - DecodeImageArgBackgroundColor::DefaultValue(), - DecodeImageArgMaxInclDimension max_incl_dimension = - DecodeImageArgMaxInclDimension::DefaultValue(), - DecodeImageArgMaxInclMetadataLength max_incl_metadata_length = - DecodeImageArgMaxInclMetadataLength::DefaultValue()); - -} // namespace wuffs_aux - -// ---------------- Auxiliary - JSON - -namespace wuffs_aux { - -struct DecodeJsonResult { - DecodeJsonResult(std::string&& error_message0, uint64_t cursor_position0); - - std::string error_message; - uint64_t cursor_position; -}; - -class DecodeJsonCallbacks { - public: - virtual ~DecodeJsonCallbacks(); - - // AppendXxx are called for leaf nodes: literals, numbers and strings. For - // strings, the Callbacks implementation is responsible for tracking map keys - // versus other values. - - virtual std::string AppendNull() = 0; - virtual std::string AppendBool(bool val) = 0; - virtual std::string AppendF64(double val) = 0; - virtual std::string AppendI64(int64_t val) = 0; - virtual std::string AppendTextString(std::string&& val) = 0; - - // Push and Pop are called for container nodes: JSON arrays (lists) and JSON - // objects (dictionaries). - // - // The flags bits combine exactly one of: - // - WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_NONE - // - WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_LIST - // - WUFFS_BASE__TOKEN__VBD__STRUCTURE__FROM_DICT - // and exactly one of: - // - WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_NONE - // - WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_LIST - // - WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_DICT - - virtual std::string Push(uint32_t flags) = 0; - virtual std::string Pop(uint32_t flags) = 0; - - // Done is always the last Callback method called by DecodeJson, whether or - // not parsing the input as JSON encountered an error. Even when successful, - // trailing data may remain in input and buffer. See "Unintuitive JSON - // Parsing" (https://nullprogram.com/blog/2019/12/28/) which discusses JSON - // parsing and when it stops. - // - // Do not keep a reference to buffer or buffer.data.ptr after Done returns, - // as DecodeJson may then de-allocate the backing array. - // - // The default Done implementation is a no-op. - virtual void // - Done(DecodeJsonResult& result, sync_io::Input& input, IOBuffer& buffer); -}; - -extern const char DecodeJson_BadJsonPointer[]; -extern const char DecodeJson_NoMatch[]; - -// The FooArgBar types add structure to Foo's optional arguments. They wrap -// inner representations for several reasons: -// - It provides a home for the DefaultValue static method, for Foo callers -// that want to override some but not all optional arguments. -// - It provides the "Bar" name at Foo call sites, which can help self- -// document Foo calls with many arguemnts. -// - It provides some type safety against accidentally transposing or omitting -// adjacent fundamentally-numeric-typed optional arguments. - -// DecodeJsonArgQuirks wraps an optional argument to DecodeJson. -struct DecodeJsonArgQuirks { - explicit DecodeJsonArgQuirks(wuffs_base__slice_u32 repr0); - explicit DecodeJsonArgQuirks(uint32_t* ptr, size_t len); - - // DefaultValue returns an empty slice. - static DecodeJsonArgQuirks DefaultValue(); - - wuffs_base__slice_u32 repr; -}; - -// DecodeJsonArgJsonPointer wraps an optional argument to DecodeJson. -struct DecodeJsonArgJsonPointer { - explicit DecodeJsonArgJsonPointer(std::string repr0); - - // DefaultValue returns an empty string. - static DecodeJsonArgJsonPointer DefaultValue(); - - std::string repr; -}; - -// DecodeJson calls callbacks based on the JSON-formatted data in input. -// -// On success, the returned error_message is empty and cursor_position counts -// the number of bytes consumed. On failure, error_message is non-empty and -// cursor_position is the location of the error. That error may be a content -// error (invalid JSON) or an input error (e.g. network failure). -// -// json_pointer is a query in the JSON Pointer (RFC 6901) syntax. The callbacks -// run for the input's sub-node that matches the query. DecodeJson_NoMatch is -// returned if no matching sub-node was found. The empty query matches the -// input's root node, consistent with JSON Pointer semantics. -// -// The JSON Pointer implementation is greedy: duplicate keys are not rejected -// but only the first match for each '/'-separated fragment is followed. -DecodeJsonResult // -DecodeJson(DecodeJsonCallbacks& callbacks, - sync_io::Input& input, - DecodeJsonArgQuirks quirks = DecodeJsonArgQuirks::DefaultValue(), - DecodeJsonArgJsonPointer json_pointer = - DecodeJsonArgJsonPointer::DefaultValue()); - -} // namespace wuffs_aux - -#endif // defined(__cplusplus) && defined(WUFFS_BASE__HAVE_UNIQUE_PTR) - -// ‼ WUFFS C HEADER ENDS HERE. -#ifdef WUFFS_IMPLEMENTATION - -#ifdef __cplusplus -extern "C" { -#endif - -// ---------------- Fundamentals - -// WUFFS_BASE__MAGIC is a magic number to check that initializers are called. -// It's not foolproof, given C doesn't automatically zero memory before use, -// but it should catch 99.99% of cases. -// -// Its (non-zero) value is arbitrary, based on md5sum("wuffs"). -#define WUFFS_BASE__MAGIC ((uint32_t)0x3CCB6C71) - -// WUFFS_BASE__DISABLED is a magic number to indicate that a non-recoverable -// error was previously encountered. -// -// Its (non-zero) value is arbitrary, based on md5sum("disabled"). -#define WUFFS_BASE__DISABLED ((uint32_t)0x075AE3D2) - -// Use switch cases for coroutine suspension points, similar to the technique -// in https://www.chiark.greenend.org.uk/~sgtatham/coroutines.html -// -// The implicit fallthrough is intentional. -// -// We use trivial macros instead of an explicit assignment and case statement -// so that clang-format doesn't get confused by the unusual "case"s. -#define WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0 case 0:; -#define WUFFS_BASE__COROUTINE_SUSPENSION_POINT(n) \ - coro_susp_point = n; \ - case n:; - -#define WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(n) \ - if (!status.repr) { \ - goto ok; \ - } else if (*status.repr != '$') { \ - goto exit; \ - } \ - coro_susp_point = n; \ - goto suspend; \ - case n:; - -// The "defined(__clang__)" isn't redundant. While vanilla clang defines -// __GNUC__, clang-cl (which mimics MSVC's cl.exe) does not. -#if defined(__GNUC__) || defined(__clang__) -#define WUFFS_BASE__LIKELY(expr) (__builtin_expect(!!(expr), 1)) -#define WUFFS_BASE__UNLIKELY(expr) (__builtin_expect(!!(expr), 0)) -#else -#define WUFFS_BASE__LIKELY(expr) (expr) -#define WUFFS_BASE__UNLIKELY(expr) (expr) -#endif - -// -------- - -static inline wuffs_base__empty_struct // -wuffs_base__ignore_status(wuffs_base__status z) { - return wuffs_base__make_empty_struct(); -} - -static inline wuffs_base__status // -wuffs_base__status__ensure_not_a_suspension(wuffs_base__status z) { - if (z.repr && (*z.repr == '$')) { - z.repr = wuffs_base__error__cannot_return_a_suspension; - } - return z; -} - -// -------- - -// wuffs_base__iterate_total_advance returns the exclusive pointer-offset at -// which iteration should stop. The overall slice has length total_len, each -// iteration's sub-slice has length iter_len and are placed iter_advance apart. -// -// The iter_advance may not be larger than iter_len. The iter_advance may be -// smaller than iter_len, in which case the sub-slices will overlap. -// -// The return value r satisfies ((0 <= r) && (r <= total_len)). -// -// For example, if total_len = 15, iter_len = 5 and iter_advance = 3, there are -// four iterations at offsets 0, 3, 6 and 9. This function returns 12. -// -// 0123456789012345 -// [....] -// [....] -// [....] -// [....] -// $ -// 0123456789012345 -// -// For example, if total_len = 15, iter_len = 5 and iter_advance = 5, there are -// three iterations at offsets 0, 5 and 10. This function returns 15. -// -// 0123456789012345 -// [....] -// [....] -// [....] -// $ -// 0123456789012345 -static inline size_t // -wuffs_base__iterate_total_advance(size_t total_len, - size_t iter_len, - size_t iter_advance) { - if (total_len >= iter_len) { - size_t n = total_len - iter_len; - return ((n / iter_advance) * iter_advance) + iter_advance; - } - return 0; -} - -// ---------------- Numeric Types - -extern const uint8_t wuffs_base__low_bits_mask__u8[8]; -extern const uint16_t wuffs_base__low_bits_mask__u16[16]; -extern const uint32_t wuffs_base__low_bits_mask__u32[32]; -extern const uint64_t wuffs_base__low_bits_mask__u64[64]; - -#define WUFFS_BASE__LOW_BITS_MASK__U8(n) (wuffs_base__low_bits_mask__u8[n]) -#define WUFFS_BASE__LOW_BITS_MASK__U16(n) (wuffs_base__low_bits_mask__u16[n]) -#define WUFFS_BASE__LOW_BITS_MASK__U32(n) (wuffs_base__low_bits_mask__u32[n]) -#define WUFFS_BASE__LOW_BITS_MASK__U64(n) (wuffs_base__low_bits_mask__u64[n]) - -// -------- - -static inline void // -wuffs_base__u8__sat_add_indirect(uint8_t* x, uint8_t y) { - *x = wuffs_base__u8__sat_add(*x, y); -} - -static inline void // -wuffs_base__u8__sat_sub_indirect(uint8_t* x, uint8_t y) { - *x = wuffs_base__u8__sat_sub(*x, y); -} - -static inline void // -wuffs_base__u16__sat_add_indirect(uint16_t* x, uint16_t y) { - *x = wuffs_base__u16__sat_add(*x, y); -} - -static inline void // -wuffs_base__u16__sat_sub_indirect(uint16_t* x, uint16_t y) { - *x = wuffs_base__u16__sat_sub(*x, y); -} - -static inline void // -wuffs_base__u32__sat_add_indirect(uint32_t* x, uint32_t y) { - *x = wuffs_base__u32__sat_add(*x, y); -} - -static inline void // -wuffs_base__u32__sat_sub_indirect(uint32_t* x, uint32_t y) { - *x = wuffs_base__u32__sat_sub(*x, y); -} - -static inline void // -wuffs_base__u64__sat_add_indirect(uint64_t* x, uint64_t y) { - *x = wuffs_base__u64__sat_add(*x, y); -} - -static inline void // -wuffs_base__u64__sat_sub_indirect(uint64_t* x, uint64_t y) { - *x = wuffs_base__u64__sat_sub(*x, y); -} - -// ---------------- Numeric Types (Utility) - -#define wuffs_base__utility__sign_extend_convert_u16_u32(a) \ - ((uint32_t)(int32_t)(int16_t)(a)) - -#define wuffs_base__utility__sign_extend_rshift_u32(a, n) \ - ((uint32_t)(((int32_t)(a)) >> (n))) - -// ---------------- Slices and Tables - -// wuffs_base__slice_u8__prefix returns up to the first up_to bytes of s. -static inline wuffs_base__slice_u8 // -wuffs_base__slice_u8__prefix(wuffs_base__slice_u8 s, uint64_t up_to) { - if (((uint64_t)(s.len)) > up_to) { - s.len = ((size_t)up_to); - } - return s; -} - -// wuffs_base__slice_u8__suffix returns up to the last up_to bytes of s. -static inline wuffs_base__slice_u8 // -wuffs_base__slice_u8__suffix(wuffs_base__slice_u8 s, uint64_t up_to) { - if (((uint64_t)(s.len)) > up_to) { - s.ptr += ((uint64_t)(s.len)) - up_to; - s.len = ((size_t)up_to); - } - return s; -} - -// wuffs_base__slice_u8__copy_from_slice calls memmove(dst.ptr, src.ptr, len) -// where len is the minimum of dst.len and src.len. -// -// Passing a wuffs_base__slice_u8 with all fields NULL or zero (a valid, empty -// slice) is valid and results in a no-op. -static inline uint64_t // -wuffs_base__slice_u8__copy_from_slice(wuffs_base__slice_u8 dst, - wuffs_base__slice_u8 src) { - size_t len = dst.len < src.len ? dst.len : src.len; - if (len > 0) { - memmove(dst.ptr, src.ptr, len); - } - return len; -} - -// -------- - -static inline wuffs_base__slice_u8 // -wuffs_base__table_u8__row_u32(wuffs_base__table_u8 t, uint32_t y) { - if (y < t.height) { - return wuffs_base__make_slice_u8(t.ptr + (t.stride * y), t.width); - } - return wuffs_base__make_slice_u8(NULL, 0); -} - -// ---------------- Slices and Tables (Utility) - -#define wuffs_base__utility__empty_slice_u8 wuffs_base__empty_slice_u8 - -// ---------------- Ranges and Rects - -static inline uint32_t // -wuffs_base__range_ii_u32__get_min_incl(const wuffs_base__range_ii_u32* r) { - return r->min_incl; -} - -static inline uint32_t // -wuffs_base__range_ii_u32__get_max_incl(const wuffs_base__range_ii_u32* r) { - return r->max_incl; -} - -static inline uint32_t // -wuffs_base__range_ie_u32__get_min_incl(const wuffs_base__range_ie_u32* r) { - return r->min_incl; -} - -static inline uint32_t // -wuffs_base__range_ie_u32__get_max_excl(const wuffs_base__range_ie_u32* r) { - return r->max_excl; -} - -static inline uint64_t // -wuffs_base__range_ii_u64__get_min_incl(const wuffs_base__range_ii_u64* r) { - return r->min_incl; -} - -static inline uint64_t // -wuffs_base__range_ii_u64__get_max_incl(const wuffs_base__range_ii_u64* r) { - return r->max_incl; -} - -static inline uint64_t // -wuffs_base__range_ie_u64__get_min_incl(const wuffs_base__range_ie_u64* r) { - return r->min_incl; -} - -static inline uint64_t // -wuffs_base__range_ie_u64__get_max_excl(const wuffs_base__range_ie_u64* r) { - return r->max_excl; -} - -// ---------------- Ranges and Rects (Utility) - -#define wuffs_base__utility__empty_range_ii_u32 wuffs_base__empty_range_ii_u32 -#define wuffs_base__utility__empty_range_ie_u32 wuffs_base__empty_range_ie_u32 -#define wuffs_base__utility__empty_range_ii_u64 wuffs_base__empty_range_ii_u64 -#define wuffs_base__utility__empty_range_ie_u64 wuffs_base__empty_range_ie_u64 -#define wuffs_base__utility__empty_rect_ii_u32 wuffs_base__empty_rect_ii_u32 -#define wuffs_base__utility__empty_rect_ie_u32 wuffs_base__empty_rect_ie_u32 -#define wuffs_base__utility__make_range_ii_u32 wuffs_base__make_range_ii_u32 -#define wuffs_base__utility__make_range_ie_u32 wuffs_base__make_range_ie_u32 -#define wuffs_base__utility__make_range_ii_u64 wuffs_base__make_range_ii_u64 -#define wuffs_base__utility__make_range_ie_u64 wuffs_base__make_range_ie_u64 -#define wuffs_base__utility__make_rect_ii_u32 wuffs_base__make_rect_ii_u32 -#define wuffs_base__utility__make_rect_ie_u32 wuffs_base__make_rect_ie_u32 - -// ---------------- I/O - -static inline uint64_t // -wuffs_base__io__count_since(uint64_t mark, uint64_t index) { - if (index >= mark) { - return index - mark; - } - return 0; -} - -// TODO: drop the "const" in "const uint8_t* ptr". Some though required about -// the base.io_reader.since method returning a mutable "slice base.u8". -#if defined(__GNUC__) -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wcast-qual" -#endif -static inline wuffs_base__slice_u8 // -wuffs_base__io__since(uint64_t mark, uint64_t index, const uint8_t* ptr) { - if (index >= mark) { - return wuffs_base__make_slice_u8(((uint8_t*)ptr) + mark, - ((size_t)(index - mark))); - } - return wuffs_base__make_slice_u8(NULL, 0); -} -#if defined(__GNUC__) -#pragma GCC diagnostic pop -#endif - -// -------- - -static inline void // -wuffs_base__io_reader__limit(const uint8_t** ptr_io2_r, - const uint8_t* iop_r, - uint64_t limit) { - if (((uint64_t)(*ptr_io2_r - iop_r)) > limit) { - *ptr_io2_r = iop_r + limit; - } -} - -static inline uint32_t // -wuffs_base__io_reader__limited_copy_u32_to_slice(const uint8_t** ptr_iop_r, - const uint8_t* io2_r, - uint32_t length, - wuffs_base__slice_u8 dst) { - const uint8_t* iop_r = *ptr_iop_r; - size_t n = dst.len; - if (n > length) { - n = length; - } - if (n > ((size_t)(io2_r - iop_r))) { - n = (size_t)(io2_r - iop_r); - } - if (n > 0) { - memmove(dst.ptr, iop_r, n); - *ptr_iop_r += n; - } - return (uint32_t)(n); -} - -// wuffs_base__io_reader__match7 returns whether the io_reader's upcoming bytes -// start with the given prefix (up to 7 bytes long). It is peek-like, not -// read-like, in that there are no side-effects. -// -// The low 3 bits of a hold the prefix length, n. -// -// The high 56 bits of a hold the prefix itself, in little-endian order. The -// first prefix byte is in bits 8..=15, the second prefix byte is in bits -// 16..=23, etc. The high (8 * (7 - n)) bits are ignored. -// -// There are three possible return values: -// - 0 means success. -// - 1 means inconclusive, equivalent to "$short read". -// - 2 means failure. -static inline uint32_t // -wuffs_base__io_reader__match7(const uint8_t* iop_r, - const uint8_t* io2_r, - wuffs_base__io_buffer* r, - uint64_t a) { - uint32_t n = a & 7; - a >>= 8; - if ((io2_r - iop_r) >= 8) { - uint64_t x = wuffs_base__peek_u64le__no_bounds_check(iop_r); - uint32_t shift = 8 * (8 - n); - return ((a << shift) == (x << shift)) ? 0 : 2; - } - for (; n > 0; n--) { - if (iop_r >= io2_r) { - return (r && r->meta.closed) ? 2 : 1; - } else if (*iop_r != ((uint8_t)(a))) { - return 2; - } - iop_r++; - a >>= 8; - } - return 0; -} - -static inline wuffs_base__io_buffer* // -wuffs_base__io_reader__set(wuffs_base__io_buffer* b, - const uint8_t** ptr_iop_r, - const uint8_t** ptr_io0_r, - const uint8_t** ptr_io1_r, - const uint8_t** ptr_io2_r, - wuffs_base__slice_u8 data, - uint64_t history_position) { - b->data = data; - b->meta.wi = data.len; - b->meta.ri = 0; - b->meta.pos = history_position; - b->meta.closed = false; - - *ptr_iop_r = data.ptr; - *ptr_io0_r = data.ptr; - *ptr_io1_r = data.ptr; - *ptr_io2_r = data.ptr + data.len; - - return b; -} - -// -------- - -static inline uint64_t // -wuffs_base__io_writer__copy_from_slice(uint8_t** ptr_iop_w, - uint8_t* io2_w, - wuffs_base__slice_u8 src) { - uint8_t* iop_w = *ptr_iop_w; - size_t n = src.len; - if (n > ((size_t)(io2_w - iop_w))) { - n = (size_t)(io2_w - iop_w); - } - if (n > 0) { - memmove(iop_w, src.ptr, n); - *ptr_iop_w += n; - } - return (uint64_t)(n); -} - -static inline void // -wuffs_base__io_writer__limit(uint8_t** ptr_io2_w, - uint8_t* iop_w, - uint64_t limit) { - if (((uint64_t)(*ptr_io2_w - iop_w)) > limit) { - *ptr_io2_w = iop_w + limit; - } -} - -static inline uint32_t // -wuffs_base__io_writer__limited_copy_u32_from_history(uint8_t** ptr_iop_w, - uint8_t* io0_w, - uint8_t* io2_w, - uint32_t length, - uint32_t distance) { - if (!distance) { - return 0; - } - uint8_t* p = *ptr_iop_w; - if ((size_t)(p - io0_w) < (size_t)(distance)) { - return 0; - } - uint8_t* q = p - distance; - size_t n = (size_t)(io2_w - p); - if ((size_t)(length) > n) { - length = (uint32_t)(n); - } else { - n = (size_t)(length); - } - // TODO: unrolling by 3 seems best for the std/deflate benchmarks, but that - // is mostly because 3 is the minimum length for the deflate format. This - // function implementation shouldn't overfit to that one format. Perhaps the - // limited_copy_u32_from_history Wuffs method should also take an unroll hint - // argument, and the cgen can look if that argument is the constant - // expression '3'. - // - // See also wuffs_base__io_writer__limited_copy_u32_from_history_fast below. - for (; n >= 3; n -= 3) { - *p++ = *q++; - *p++ = *q++; - *p++ = *q++; - } - for (; n; n--) { - *p++ = *q++; - } - *ptr_iop_w = p; - return length; -} - -// wuffs_base__io_writer__limited_copy_u32_from_history_fast is like the -// wuffs_base__io_writer__limited_copy_u32_from_history function above, but has -// stronger pre-conditions. -// -// The caller needs to prove that: -// - length <= (io2_w - *ptr_iop_w) -// - distance >= 1 -// - distance <= (*ptr_iop_w - io0_w) -static inline uint32_t // -wuffs_base__io_writer__limited_copy_u32_from_history_fast(uint8_t** ptr_iop_w, - uint8_t* io0_w, - uint8_t* io2_w, - uint32_t length, - uint32_t distance) { - uint8_t* p = *ptr_iop_w; - uint8_t* q = p - distance; - uint32_t n = length; - for (; n >= 3; n -= 3) { - *p++ = *q++; - *p++ = *q++; - *p++ = *q++; - } - for (; n; n--) { - *p++ = *q++; - } - *ptr_iop_w = p; - return length; -} - -// wuffs_base__io_writer__limited_copy_u32_from_history_8_byte_chunks_distance_1_fast -// copies the previous byte (the one immediately before *ptr_iop_w), copying 8 -// byte chunks at a time. Each chunk contains 8 repetitions of the same byte. -// -// In terms of number of bytes copied, length is rounded up to a multiple of 8. -// As a special case, a zero length rounds up to 8 (even though 0 is already a -// multiple of 8), since there is always at least one 8 byte chunk copied. -// -// In terms of advancing *ptr_iop_w, length is not rounded up. -// -// The caller needs to prove that: -// - (length + 8) <= (io2_w - *ptr_iop_w) -// - distance == 1 -// - distance <= (*ptr_iop_w - io0_w) -static inline uint32_t // -wuffs_base__io_writer__limited_copy_u32_from_history_8_byte_chunks_distance_1_fast( - uint8_t** ptr_iop_w, - uint8_t* io0_w, - uint8_t* io2_w, - uint32_t length, - uint32_t distance) { - uint8_t* p = *ptr_iop_w; - uint64_t x = p[-1]; - x |= x << 8; - x |= x << 16; - x |= x << 32; - uint32_t n = length; - while (1) { - wuffs_base__poke_u64le__no_bounds_check(p, x); - if (n <= 8) { - p += n; - break; - } - p += 8; - n -= 8; - } - *ptr_iop_w = p; - return length; -} - -// wuffs_base__io_writer__limited_copy_u32_from_history_8_byte_chunks_fast is -// like the wuffs_base__io_writer__limited_copy_u32_from_history_fast function -// above, but copies 8 byte chunks at a time. -// -// In terms of number of bytes copied, length is rounded up to a multiple of 8. -// As a special case, a zero length rounds up to 8 (even though 0 is already a -// multiple of 8), since there is always at least one 8 byte chunk copied. -// -// In terms of advancing *ptr_iop_w, length is not rounded up. -// -// The caller needs to prove that: -// - (length + 8) <= (io2_w - *ptr_iop_w) -// - distance >= 8 -// - distance <= (*ptr_iop_w - io0_w) -static inline uint32_t // -wuffs_base__io_writer__limited_copy_u32_from_history_8_byte_chunks_fast( - uint8_t** ptr_iop_w, - uint8_t* io0_w, - uint8_t* io2_w, - uint32_t length, - uint32_t distance) { - uint8_t* p = *ptr_iop_w; - uint8_t* q = p - distance; - uint32_t n = length; - while (1) { - memcpy(p, q, 8); - if (n <= 8) { - p += n; - break; - } - p += 8; - q += 8; - n -= 8; - } - *ptr_iop_w = p; - return length; -} - -static inline uint32_t // -wuffs_base__io_writer__limited_copy_u32_from_reader(uint8_t** ptr_iop_w, - uint8_t* io2_w, - uint32_t length, - const uint8_t** ptr_iop_r, - const uint8_t* io2_r) { - uint8_t* iop_w = *ptr_iop_w; - size_t n = length; - if (n > ((size_t)(io2_w - iop_w))) { - n = (size_t)(io2_w - iop_w); - } - const uint8_t* iop_r = *ptr_iop_r; - if (n > ((size_t)(io2_r - iop_r))) { - n = (size_t)(io2_r - iop_r); - } - if (n > 0) { - memmove(iop_w, iop_r, n); - *ptr_iop_w += n; - *ptr_iop_r += n; - } - return (uint32_t)(n); -} - -static inline uint32_t // -wuffs_base__io_writer__limited_copy_u32_from_slice(uint8_t** ptr_iop_w, - uint8_t* io2_w, - uint32_t length, - wuffs_base__slice_u8 src) { - uint8_t* iop_w = *ptr_iop_w; - size_t n = src.len; - if (n > length) { - n = length; - } - if (n > ((size_t)(io2_w - iop_w))) { - n = (size_t)(io2_w - iop_w); - } - if (n > 0) { - memmove(iop_w, src.ptr, n); - *ptr_iop_w += n; - } - return (uint32_t)(n); -} - -static inline wuffs_base__io_buffer* // -wuffs_base__io_writer__set(wuffs_base__io_buffer* b, - uint8_t** ptr_iop_w, - uint8_t** ptr_io0_w, - uint8_t** ptr_io1_w, - uint8_t** ptr_io2_w, - wuffs_base__slice_u8 data, - uint64_t history_position) { - b->data = data; - b->meta.wi = 0; - b->meta.ri = 0; - b->meta.pos = history_position; - b->meta.closed = false; - - *ptr_iop_w = data.ptr; - *ptr_io0_w = data.ptr; - *ptr_io1_w = data.ptr; - *ptr_io2_w = data.ptr + data.len; - - return b; -} - -// ---------------- I/O (Utility) - -#define wuffs_base__utility__empty_io_reader wuffs_base__empty_io_reader -#define wuffs_base__utility__empty_io_writer wuffs_base__empty_io_writer - -// ---------------- Tokens - -// ---------------- Tokens (Utility) - -// ---------------- Memory Allocation - -// ---------------- Images - -WUFFS_BASE__MAYBE_STATIC uint64_t // -wuffs_base__pixel_swizzler__limited_swizzle_u32_interleaved_from_reader( - const wuffs_base__pixel_swizzler* p, - uint32_t up_to_num_pixels, - wuffs_base__slice_u8 dst, - wuffs_base__slice_u8 dst_palette, - const uint8_t** ptr_iop_r, - const uint8_t* io2_r); - -WUFFS_BASE__MAYBE_STATIC uint64_t // -wuffs_base__pixel_swizzler__swizzle_interleaved_from_reader( - const wuffs_base__pixel_swizzler* p, - wuffs_base__slice_u8 dst, - wuffs_base__slice_u8 dst_palette, - const uint8_t** ptr_iop_r, - const uint8_t* io2_r); - -WUFFS_BASE__MAYBE_STATIC uint64_t // -wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black( - const wuffs_base__pixel_swizzler* p, - wuffs_base__slice_u8 dst, - wuffs_base__slice_u8 dst_palette, - uint64_t num_pixels); - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status // -wuffs_base__pixel_swizzler__swizzle_ycck( - const wuffs_base__pixel_swizzler* p, - wuffs_base__pixel_buffer* dst, - wuffs_base__slice_u8 dst_palette, - uint32_t width, - uint32_t height, - wuffs_base__slice_u8 src0, - wuffs_base__slice_u8 src1, - wuffs_base__slice_u8 src2, - wuffs_base__slice_u8 src3, - uint32_t width0, - uint32_t width1, - uint32_t width2, - uint32_t width3, - uint32_t height0, - uint32_t height1, - uint32_t height2, - uint32_t height3, - uint32_t stride0, - uint32_t stride1, - uint32_t stride2, - uint32_t stride3, - uint8_t h0, - uint8_t h1, - uint8_t h2, - uint8_t h3, - uint8_t v0, - uint8_t v1, - uint8_t v2, - uint8_t v3, - bool triangle_filter_for_2to1, - wuffs_base__slice_u8 scratch_buffer_2k); - -// ---------------- Images (Utility) - -#define wuffs_base__utility__make_pixel_format wuffs_base__make_pixel_format - -// ---------------- String Conversions - -// ---------------- Unicode and UTF-8 - -// ---------------- - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \ - defined(WUFFS_CONFIG__MODULE__BASE__CORE) - -const uint8_t wuffs_base__low_bits_mask__u8[8] = { - 0x00, 0x01, 0x03, 0x07, 0x0F, 0x1F, 0x3F, 0x7F, -}; - -const uint16_t wuffs_base__low_bits_mask__u16[16] = { - 0x0000, 0x0001, 0x0003, 0x0007, 0x000F, 0x001F, 0x003F, 0x007F, - 0x00FF, 0x01FF, 0x03FF, 0x07FF, 0x0FFF, 0x1FFF, 0x3FFF, 0x7FFF, -}; - -const uint32_t wuffs_base__low_bits_mask__u32[32] = { - 0x00000000, 0x00000001, 0x00000003, 0x00000007, 0x0000000F, 0x0000001F, - 0x0000003F, 0x0000007F, 0x000000FF, 0x000001FF, 0x000003FF, 0x000007FF, - 0x00000FFF, 0x00001FFF, 0x00003FFF, 0x00007FFF, 0x0000FFFF, 0x0001FFFF, - 0x0003FFFF, 0x0007FFFF, 0x000FFFFF, 0x001FFFFF, 0x003FFFFF, 0x007FFFFF, - 0x00FFFFFF, 0x01FFFFFF, 0x03FFFFFF, 0x07FFFFFF, 0x0FFFFFFF, 0x1FFFFFFF, - 0x3FFFFFFF, 0x7FFFFFFF, -}; - -const uint64_t wuffs_base__low_bits_mask__u64[64] = { - 0x0000000000000000, 0x0000000000000001, 0x0000000000000003, - 0x0000000000000007, 0x000000000000000F, 0x000000000000001F, - 0x000000000000003F, 0x000000000000007F, 0x00000000000000FF, - 0x00000000000001FF, 0x00000000000003FF, 0x00000000000007FF, - 0x0000000000000FFF, 0x0000000000001FFF, 0x0000000000003FFF, - 0x0000000000007FFF, 0x000000000000FFFF, 0x000000000001FFFF, - 0x000000000003FFFF, 0x000000000007FFFF, 0x00000000000FFFFF, - 0x00000000001FFFFF, 0x00000000003FFFFF, 0x00000000007FFFFF, - 0x0000000000FFFFFF, 0x0000000001FFFFFF, 0x0000000003FFFFFF, - 0x0000000007FFFFFF, 0x000000000FFFFFFF, 0x000000001FFFFFFF, - 0x000000003FFFFFFF, 0x000000007FFFFFFF, 0x00000000FFFFFFFF, - 0x00000001FFFFFFFF, 0x00000003FFFFFFFF, 0x00000007FFFFFFFF, - 0x0000000FFFFFFFFF, 0x0000001FFFFFFFFF, 0x0000003FFFFFFFFF, - 0x0000007FFFFFFFFF, 0x000000FFFFFFFFFF, 0x000001FFFFFFFFFF, - 0x000003FFFFFFFFFF, 0x000007FFFFFFFFFF, 0x00000FFFFFFFFFFF, - 0x00001FFFFFFFFFFF, 0x00003FFFFFFFFFFF, 0x00007FFFFFFFFFFF, - 0x0000FFFFFFFFFFFF, 0x0001FFFFFFFFFFFF, 0x0003FFFFFFFFFFFF, - 0x0007FFFFFFFFFFFF, 0x000FFFFFFFFFFFFF, 0x001FFFFFFFFFFFFF, - 0x003FFFFFFFFFFFFF, 0x007FFFFFFFFFFFFF, 0x00FFFFFFFFFFFFFF, - 0x01FFFFFFFFFFFFFF, 0x03FFFFFFFFFFFFFF, 0x07FFFFFFFFFFFFFF, - 0x0FFFFFFFFFFFFFFF, 0x1FFFFFFFFFFFFFFF, 0x3FFFFFFFFFFFFFFF, - 0x7FFFFFFFFFFFFFFF, -}; - -const uint32_t wuffs_base__pixel_format__bits_per_channel[16] = { - 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, - 0x08, 0x0A, 0x0C, 0x10, 0x18, 0x20, 0x30, 0x40, -}; - -const char wuffs_base__note__i_o_redirect[] = "@base: I/O redirect"; -const char wuffs_base__note__end_of_data[] = "@base: end of data"; -const char wuffs_base__note__metadata_reported[] = "@base: metadata reported"; -const char wuffs_base__suspension__even_more_information[] = "$base: even more information"; -const char wuffs_base__suspension__mispositioned_read[] = "$base: mispositioned read"; -const char wuffs_base__suspension__mispositioned_write[] = "$base: mispositioned write"; -const char wuffs_base__suspension__short_read[] = "$base: short read"; -const char wuffs_base__suspension__short_write[] = "$base: short write"; -const char wuffs_base__error__bad_i_o_position[] = "#base: bad I/O position"; -const char wuffs_base__error__bad_argument_length_too_short[] = "#base: bad argument (length too short)"; -const char wuffs_base__error__bad_argument[] = "#base: bad argument"; -const char wuffs_base__error__bad_call_sequence[] = "#base: bad call sequence"; -const char wuffs_base__error__bad_data[] = "#base: bad data"; -const char wuffs_base__error__bad_receiver[] = "#base: bad receiver"; -const char wuffs_base__error__bad_restart[] = "#base: bad restart"; -const char wuffs_base__error__bad_sizeof_receiver[] = "#base: bad sizeof receiver"; -const char wuffs_base__error__bad_vtable[] = "#base: bad vtable"; -const char wuffs_base__error__bad_workbuf_length[] = "#base: bad workbuf length"; -const char wuffs_base__error__bad_wuffs_version[] = "#base: bad wuffs version"; -const char wuffs_base__error__cannot_return_a_suspension[] = "#base: cannot return a suspension"; -const char wuffs_base__error__disabled_by_previous_error[] = "#base: disabled by previous error"; -const char wuffs_base__error__initialize_falsely_claimed_already_zeroed[] = "#base: initialize falsely claimed already zeroed"; -const char wuffs_base__error__initialize_not_called[] = "#base: initialize not called"; -const char wuffs_base__error__interleaved_coroutine_calls[] = "#base: interleaved coroutine calls"; -const char wuffs_base__error__no_more_information[] = "#base: no more information"; -const char wuffs_base__error__not_enough_data[] = "#base: not enough data"; -const char wuffs_base__error__out_of_bounds[] = "#base: out of bounds"; -const char wuffs_base__error__unsupported_image_dimension[] = "#base: unsupported image dimension"; -const char wuffs_base__error__unsupported_method[] = "#base: unsupported method"; -const char wuffs_base__error__unsupported_option[] = "#base: unsupported option"; -const char wuffs_base__error__unsupported_pixel_swizzler_option[] = "#base: unsupported pixel swizzler option"; -const char wuffs_base__error__too_much_data[] = "#base: too much data"; - -const char wuffs_base__hasher_u32__vtable_name[] = "{vtable}wuffs_base__hasher_u32"; -const char wuffs_base__image_decoder__vtable_name[] = "{vtable}wuffs_base__image_decoder"; -const char wuffs_base__io_transformer__vtable_name[] = "{vtable}wuffs_base__io_transformer"; -const char wuffs_base__token_decoder__vtable_name[] = "{vtable}wuffs_base__token_decoder"; - -#endif // !defined(WUFFS_CONFIG__MODULES) || - // defined(WUFFS_CONFIG__MODULE__BASE) || - // defined(WUFFS_CONFIG__MODULE__BASE__CORE) - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \ - defined(WUFFS_CONFIG__MODULE__BASE__INTERFACES) - -// ---------------- Interface Definitions. - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_base__hasher_u32__set_quirk( - wuffs_base__hasher_u32* self, - uint32_t a_key, - uint64_t a_value) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - - const wuffs_base__vtable* v = &self->private_impl.first_vtable; - int i; - for (i = 0; i < 63; i++) { - if (v->vtable_name == wuffs_base__hasher_u32__vtable_name) { - const wuffs_base__hasher_u32__func_ptrs* func_ptrs = - (const wuffs_base__hasher_u32__func_ptrs*)(v->function_pointers); - return (*func_ptrs->set_quirk)(self, a_key, a_value); - } else if (v->vtable_name == NULL) { - break; - } - v++; - } - - return wuffs_base__make_status(wuffs_base__error__bad_vtable); -} - -WUFFS_BASE__MAYBE_STATIC uint32_t -wuffs_base__hasher_u32__update_u32( - wuffs_base__hasher_u32* self, - wuffs_base__slice_u8 a_x) { - if (!self) { - return 0; - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return 0; - } - - const wuffs_base__vtable* v = &self->private_impl.first_vtable; - int i; - for (i = 0; i < 63; i++) { - if (v->vtable_name == wuffs_base__hasher_u32__vtable_name) { - const wuffs_base__hasher_u32__func_ptrs* func_ptrs = - (const wuffs_base__hasher_u32__func_ptrs*)(v->function_pointers); - return (*func_ptrs->update_u32)(self, a_x); - } else if (v->vtable_name == NULL) { - break; - } - v++; - } - - return 0; -} - -// -------- - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_base__image_decoder__decode_frame( - wuffs_base__image_decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__pixel_blend a_blend, - wuffs_base__slice_u8 a_workbuf, - wuffs_base__decode_frame_options* a_opts) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - - const wuffs_base__vtable* v = &self->private_impl.first_vtable; - int i; - for (i = 0; i < 63; i++) { - if (v->vtable_name == wuffs_base__image_decoder__vtable_name) { - const wuffs_base__image_decoder__func_ptrs* func_ptrs = - (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers); - return (*func_ptrs->decode_frame)(self, a_dst, a_src, a_blend, a_workbuf, a_opts); - } else if (v->vtable_name == NULL) { - break; - } - v++; - } - - return wuffs_base__make_status(wuffs_base__error__bad_vtable); -} - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_base__image_decoder__decode_frame_config( - wuffs_base__image_decoder* self, - wuffs_base__frame_config* a_dst, - wuffs_base__io_buffer* a_src) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - - const wuffs_base__vtable* v = &self->private_impl.first_vtable; - int i; - for (i = 0; i < 63; i++) { - if (v->vtable_name == wuffs_base__image_decoder__vtable_name) { - const wuffs_base__image_decoder__func_ptrs* func_ptrs = - (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers); - return (*func_ptrs->decode_frame_config)(self, a_dst, a_src); - } else if (v->vtable_name == NULL) { - break; - } - v++; - } - - return wuffs_base__make_status(wuffs_base__error__bad_vtable); -} - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_base__image_decoder__decode_image_config( - wuffs_base__image_decoder* self, - wuffs_base__image_config* a_dst, - wuffs_base__io_buffer* a_src) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - - const wuffs_base__vtable* v = &self->private_impl.first_vtable; - int i; - for (i = 0; i < 63; i++) { - if (v->vtable_name == wuffs_base__image_decoder__vtable_name) { - const wuffs_base__image_decoder__func_ptrs* func_ptrs = - (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers); - return (*func_ptrs->decode_image_config)(self, a_dst, a_src); - } else if (v->vtable_name == NULL) { - break; - } - v++; - } - - return wuffs_base__make_status(wuffs_base__error__bad_vtable); -} - -WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32 -wuffs_base__image_decoder__frame_dirty_rect( - const wuffs_base__image_decoder* self) { - if (!self) { - return wuffs_base__utility__empty_rect_ie_u32(); - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return wuffs_base__utility__empty_rect_ie_u32(); - } - - const wuffs_base__vtable* v = &self->private_impl.first_vtable; - int i; - for (i = 0; i < 63; i++) { - if (v->vtable_name == wuffs_base__image_decoder__vtable_name) { - const wuffs_base__image_decoder__func_ptrs* func_ptrs = - (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers); - return (*func_ptrs->frame_dirty_rect)(self); - } else if (v->vtable_name == NULL) { - break; - } - v++; - } - - return wuffs_base__utility__empty_rect_ie_u32(); -} - -WUFFS_BASE__MAYBE_STATIC uint32_t -wuffs_base__image_decoder__num_animation_loops( - const wuffs_base__image_decoder* self) { - if (!self) { - return 0; - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return 0; - } - - const wuffs_base__vtable* v = &self->private_impl.first_vtable; - int i; - for (i = 0; i < 63; i++) { - if (v->vtable_name == wuffs_base__image_decoder__vtable_name) { - const wuffs_base__image_decoder__func_ptrs* func_ptrs = - (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers); - return (*func_ptrs->num_animation_loops)(self); - } else if (v->vtable_name == NULL) { - break; - } - v++; - } - - return 0; -} - -WUFFS_BASE__MAYBE_STATIC uint64_t -wuffs_base__image_decoder__num_decoded_frame_configs( - const wuffs_base__image_decoder* self) { - if (!self) { - return 0; - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return 0; - } - - const wuffs_base__vtable* v = &self->private_impl.first_vtable; - int i; - for (i = 0; i < 63; i++) { - if (v->vtable_name == wuffs_base__image_decoder__vtable_name) { - const wuffs_base__image_decoder__func_ptrs* func_ptrs = - (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers); - return (*func_ptrs->num_decoded_frame_configs)(self); - } else if (v->vtable_name == NULL) { - break; - } - v++; - } - - return 0; -} - -WUFFS_BASE__MAYBE_STATIC uint64_t -wuffs_base__image_decoder__num_decoded_frames( - const wuffs_base__image_decoder* self) { - if (!self) { - return 0; - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return 0; - } - - const wuffs_base__vtable* v = &self->private_impl.first_vtable; - int i; - for (i = 0; i < 63; i++) { - if (v->vtable_name == wuffs_base__image_decoder__vtable_name) { - const wuffs_base__image_decoder__func_ptrs* func_ptrs = - (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers); - return (*func_ptrs->num_decoded_frames)(self); - } else if (v->vtable_name == NULL) { - break; - } - v++; - } - - return 0; -} - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_base__image_decoder__restart_frame( - wuffs_base__image_decoder* self, - uint64_t a_index, - uint64_t a_io_position) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - - const wuffs_base__vtable* v = &self->private_impl.first_vtable; - int i; - for (i = 0; i < 63; i++) { - if (v->vtable_name == wuffs_base__image_decoder__vtable_name) { - const wuffs_base__image_decoder__func_ptrs* func_ptrs = - (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers); - return (*func_ptrs->restart_frame)(self, a_index, a_io_position); - } else if (v->vtable_name == NULL) { - break; - } - v++; - } - - return wuffs_base__make_status(wuffs_base__error__bad_vtable); -} - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_base__image_decoder__set_quirk( - wuffs_base__image_decoder* self, - uint32_t a_key, - uint64_t a_value) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - - const wuffs_base__vtable* v = &self->private_impl.first_vtable; - int i; - for (i = 0; i < 63; i++) { - if (v->vtable_name == wuffs_base__image_decoder__vtable_name) { - const wuffs_base__image_decoder__func_ptrs* func_ptrs = - (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers); - return (*func_ptrs->set_quirk)(self, a_key, a_value); - } else if (v->vtable_name == NULL) { - break; - } - v++; - } - - return wuffs_base__make_status(wuffs_base__error__bad_vtable); -} - -WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct -wuffs_base__image_decoder__set_report_metadata( - wuffs_base__image_decoder* self, - uint32_t a_fourcc, - bool a_report) { - if (!self) { - return wuffs_base__make_empty_struct(); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_empty_struct(); - } - - const wuffs_base__vtable* v = &self->private_impl.first_vtable; - int i; - for (i = 0; i < 63; i++) { - if (v->vtable_name == wuffs_base__image_decoder__vtable_name) { - const wuffs_base__image_decoder__func_ptrs* func_ptrs = - (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers); - return (*func_ptrs->set_report_metadata)(self, a_fourcc, a_report); - } else if (v->vtable_name == NULL) { - break; - } - v++; - } - - return wuffs_base__make_empty_struct(); -} - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_base__image_decoder__tell_me_more( - wuffs_base__image_decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__more_information* a_minfo, - wuffs_base__io_buffer* a_src) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - - const wuffs_base__vtable* v = &self->private_impl.first_vtable; - int i; - for (i = 0; i < 63; i++) { - if (v->vtable_name == wuffs_base__image_decoder__vtable_name) { - const wuffs_base__image_decoder__func_ptrs* func_ptrs = - (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers); - return (*func_ptrs->tell_me_more)(self, a_dst, a_minfo, a_src); - } else if (v->vtable_name == NULL) { - break; - } - v++; - } - - return wuffs_base__make_status(wuffs_base__error__bad_vtable); -} - -WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 -wuffs_base__image_decoder__workbuf_len( - const wuffs_base__image_decoder* self) { - if (!self) { - return wuffs_base__utility__empty_range_ii_u64(); - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return wuffs_base__utility__empty_range_ii_u64(); - } - - const wuffs_base__vtable* v = &self->private_impl.first_vtable; - int i; - for (i = 0; i < 63; i++) { - if (v->vtable_name == wuffs_base__image_decoder__vtable_name) { - const wuffs_base__image_decoder__func_ptrs* func_ptrs = - (const wuffs_base__image_decoder__func_ptrs*)(v->function_pointers); - return (*func_ptrs->workbuf_len)(self); - } else if (v->vtable_name == NULL) { - break; - } - v++; - } - - return wuffs_base__utility__empty_range_ii_u64(); -} - -// -------- - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_base__io_transformer__set_quirk( - wuffs_base__io_transformer* self, - uint32_t a_key, - uint64_t a_value) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - - const wuffs_base__vtable* v = &self->private_impl.first_vtable; - int i; - for (i = 0; i < 63; i++) { - if (v->vtable_name == wuffs_base__io_transformer__vtable_name) { - const wuffs_base__io_transformer__func_ptrs* func_ptrs = - (const wuffs_base__io_transformer__func_ptrs*)(v->function_pointers); - return (*func_ptrs->set_quirk)(self, a_key, a_value); - } else if (v->vtable_name == NULL) { - break; - } - v++; - } - - return wuffs_base__make_status(wuffs_base__error__bad_vtable); -} - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_base__io_transformer__transform_io( - wuffs_base__io_transformer* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__slice_u8 a_workbuf) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - - const wuffs_base__vtable* v = &self->private_impl.first_vtable; - int i; - for (i = 0; i < 63; i++) { - if (v->vtable_name == wuffs_base__io_transformer__vtable_name) { - const wuffs_base__io_transformer__func_ptrs* func_ptrs = - (const wuffs_base__io_transformer__func_ptrs*)(v->function_pointers); - return (*func_ptrs->transform_io)(self, a_dst, a_src, a_workbuf); - } else if (v->vtable_name == NULL) { - break; - } - v++; - } - - return wuffs_base__make_status(wuffs_base__error__bad_vtable); -} - -WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 -wuffs_base__io_transformer__workbuf_len( - const wuffs_base__io_transformer* self) { - if (!self) { - return wuffs_base__utility__empty_range_ii_u64(); - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return wuffs_base__utility__empty_range_ii_u64(); - } - - const wuffs_base__vtable* v = &self->private_impl.first_vtable; - int i; - for (i = 0; i < 63; i++) { - if (v->vtable_name == wuffs_base__io_transformer__vtable_name) { - const wuffs_base__io_transformer__func_ptrs* func_ptrs = - (const wuffs_base__io_transformer__func_ptrs*)(v->function_pointers); - return (*func_ptrs->workbuf_len)(self); - } else if (v->vtable_name == NULL) { - break; - } - v++; - } - - return wuffs_base__utility__empty_range_ii_u64(); -} - -// -------- - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_base__token_decoder__decode_tokens( - wuffs_base__token_decoder* self, - wuffs_base__token_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__slice_u8 a_workbuf) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - - const wuffs_base__vtable* v = &self->private_impl.first_vtable; - int i; - for (i = 0; i < 63; i++) { - if (v->vtable_name == wuffs_base__token_decoder__vtable_name) { - const wuffs_base__token_decoder__func_ptrs* func_ptrs = - (const wuffs_base__token_decoder__func_ptrs*)(v->function_pointers); - return (*func_ptrs->decode_tokens)(self, a_dst, a_src, a_workbuf); - } else if (v->vtable_name == NULL) { - break; - } - v++; - } - - return wuffs_base__make_status(wuffs_base__error__bad_vtable); -} - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_base__token_decoder__set_quirk( - wuffs_base__token_decoder* self, - uint32_t a_key, - uint64_t a_value) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - - const wuffs_base__vtable* v = &self->private_impl.first_vtable; - int i; - for (i = 0; i < 63; i++) { - if (v->vtable_name == wuffs_base__token_decoder__vtable_name) { - const wuffs_base__token_decoder__func_ptrs* func_ptrs = - (const wuffs_base__token_decoder__func_ptrs*)(v->function_pointers); - return (*func_ptrs->set_quirk)(self, a_key, a_value); - } else if (v->vtable_name == NULL) { - break; - } - v++; - } - - return wuffs_base__make_status(wuffs_base__error__bad_vtable); -} - -WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 -wuffs_base__token_decoder__workbuf_len( - const wuffs_base__token_decoder* self) { - if (!self) { - return wuffs_base__utility__empty_range_ii_u64(); - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return wuffs_base__utility__empty_range_ii_u64(); - } - - const wuffs_base__vtable* v = &self->private_impl.first_vtable; - int i; - for (i = 0; i < 63; i++) { - if (v->vtable_name == wuffs_base__token_decoder__vtable_name) { - const wuffs_base__token_decoder__func_ptrs* func_ptrs = - (const wuffs_base__token_decoder__func_ptrs*)(v->function_pointers); - return (*func_ptrs->workbuf_len)(self); - } else if (v->vtable_name == NULL) { - break; - } - v++; - } - - return wuffs_base__utility__empty_range_ii_u64(); -} - -#endif // !defined(WUFFS_CONFIG__MODULES) || - // defined(WUFFS_CONFIG__MODULE__BASE) || - // defined(WUFFS_CONFIG__MODULE__BASE__INTERFACES) - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \ - defined(WUFFS_CONFIG__MODULE__BASE__FLOATCONV) - -// ---------------- IEEE 754 Floating Point - -// The etc__hpd_left_shift and etc__powers_of_5 tables were printed by -// script/print-hpd-left-shift.go. That script has an optional -comments flag, -// whose output is not copied here, which prints further detail. -// -// These tables are used in -// wuffs_base__private_implementation__high_prec_dec__lshift_num_new_digits. - -// wuffs_base__private_implementation__hpd_left_shift[i] encodes the number of -// new digits created after multiplying a positive integer by (1 << i): the -// additional length in the decimal representation. For example, shifting "234" -// by 3 (equivalent to multiplying by 8) will produce "1872". Going from a -// 3-length string to a 4-length string means that 1 new digit was added (and -// existing digits may have changed). -// -// Shifting by i can add either N or N-1 new digits, depending on whether the -// original positive integer compares >= or < to the i'th power of 5 (as 10 -// equals 2 * 5). Comparison is lexicographic, not numerical. -// -// For example, shifting by 4 (i.e. multiplying by 16) can add 1 or 2 new -// digits, depending on a lexicographic comparison to (5 ** 4), i.e. "625": -// - ("1" << 4) is "16", which adds 1 new digit. -// - ("5678" << 4) is "90848", which adds 1 new digit. -// - ("624" << 4) is "9984", which adds 1 new digit. -// - ("62498" << 4) is "999968", which adds 1 new digit. -// - ("625" << 4) is "10000", which adds 2 new digits. -// - ("625001" << 4) is "10000016", which adds 2 new digits. -// - ("7008" << 4) is "112128", which adds 2 new digits. -// - ("99" << 4) is "1584", which adds 2 new digits. -// -// Thus, when i is 4, N is 2 and (5 ** i) is "625". This etc__hpd_left_shift -// array encodes this as: -// - etc__hpd_left_shift[4] is 0x1006 = (2 << 11) | 0x0006. -// - etc__hpd_left_shift[5] is 0x1009 = (? << 11) | 0x0009. -// where the ? isn't relevant for i == 4. -// -// The high 5 bits of etc__hpd_left_shift[i] is N, the higher of the two -// possible number of new digits. The low 11 bits are an offset into the -// etc__powers_of_5 array (of length 0x051C, so offsets fit in 11 bits). When i -// is 4, its offset and the next one is 6 and 9, and etc__powers_of_5[6 .. 9] -// is the string "\x06\x02\x05", so the relevant power of 5 is "625". -// -// Thanks to Ken Thompson for the original idea. -static const uint16_t wuffs_base__private_implementation__hpd_left_shift[65] = { - 0x0000, 0x0800, 0x0801, 0x0803, 0x1006, 0x1009, 0x100D, 0x1812, 0x1817, - 0x181D, 0x2024, 0x202B, 0x2033, 0x203C, 0x2846, 0x2850, 0x285B, 0x3067, - 0x3073, 0x3080, 0x388E, 0x389C, 0x38AB, 0x38BB, 0x40CC, 0x40DD, 0x40EF, - 0x4902, 0x4915, 0x4929, 0x513E, 0x5153, 0x5169, 0x5180, 0x5998, 0x59B0, - 0x59C9, 0x61E3, 0x61FD, 0x6218, 0x6A34, 0x6A50, 0x6A6D, 0x6A8B, 0x72AA, - 0x72C9, 0x72E9, 0x7B0A, 0x7B2B, 0x7B4D, 0x8370, 0x8393, 0x83B7, 0x83DC, - 0x8C02, 0x8C28, 0x8C4F, 0x9477, 0x949F, 0x94C8, 0x9CF2, 0x051C, 0x051C, - 0x051C, 0x051C, -}; - -// wuffs_base__private_implementation__powers_of_5 contains the powers of 5, -// concatenated together: "5", "25", "125", "625", "3125", etc. -static const uint8_t wuffs_base__private_implementation__powers_of_5[0x051C] = { - 5, 2, 5, 1, 2, 5, 6, 2, 5, 3, 1, 2, 5, 1, 5, 6, 2, 5, 7, 8, 1, 2, 5, 3, 9, - 0, 6, 2, 5, 1, 9, 5, 3, 1, 2, 5, 9, 7, 6, 5, 6, 2, 5, 4, 8, 8, 2, 8, 1, 2, - 5, 2, 4, 4, 1, 4, 0, 6, 2, 5, 1, 2, 2, 0, 7, 0, 3, 1, 2, 5, 6, 1, 0, 3, 5, - 1, 5, 6, 2, 5, 3, 0, 5, 1, 7, 5, 7, 8, 1, 2, 5, 1, 5, 2, 5, 8, 7, 8, 9, 0, - 6, 2, 5, 7, 6, 2, 9, 3, 9, 4, 5, 3, 1, 2, 5, 3, 8, 1, 4, 6, 9, 7, 2, 6, 5, - 6, 2, 5, 1, 9, 0, 7, 3, 4, 8, 6, 3, 2, 8, 1, 2, 5, 9, 5, 3, 6, 7, 4, 3, 1, - 6, 4, 0, 6, 2, 5, 4, 7, 6, 8, 3, 7, 1, 5, 8, 2, 0, 3, 1, 2, 5, 2, 3, 8, 4, - 1, 8, 5, 7, 9, 1, 0, 1, 5, 6, 2, 5, 1, 1, 9, 2, 0, 9, 2, 8, 9, 5, 5, 0, 7, - 8, 1, 2, 5, 5, 9, 6, 0, 4, 6, 4, 4, 7, 7, 5, 3, 9, 0, 6, 2, 5, 2, 9, 8, 0, - 2, 3, 2, 2, 3, 8, 7, 6, 9, 5, 3, 1, 2, 5, 1, 4, 9, 0, 1, 1, 6, 1, 1, 9, 3, - 8, 4, 7, 6, 5, 6, 2, 5, 7, 4, 5, 0, 5, 8, 0, 5, 9, 6, 9, 2, 3, 8, 2, 8, 1, - 2, 5, 3, 7, 2, 5, 2, 9, 0, 2, 9, 8, 4, 6, 1, 9, 1, 4, 0, 6, 2, 5, 1, 8, 6, - 2, 6, 4, 5, 1, 4, 9, 2, 3, 0, 9, 5, 7, 0, 3, 1, 2, 5, 9, 3, 1, 3, 2, 2, 5, - 7, 4, 6, 1, 5, 4, 7, 8, 5, 1, 5, 6, 2, 5, 4, 6, 5, 6, 6, 1, 2, 8, 7, 3, 0, - 7, 7, 3, 9, 2, 5, 7, 8, 1, 2, 5, 2, 3, 2, 8, 3, 0, 6, 4, 3, 6, 5, 3, 8, 6, - 9, 6, 2, 8, 9, 0, 6, 2, 5, 1, 1, 6, 4, 1, 5, 3, 2, 1, 8, 2, 6, 9, 3, 4, 8, - 1, 4, 4, 5, 3, 1, 2, 5, 5, 8, 2, 0, 7, 6, 6, 0, 9, 1, 3, 4, 6, 7, 4, 0, 7, - 2, 2, 6, 5, 6, 2, 5, 2, 9, 1, 0, 3, 8, 3, 0, 4, 5, 6, 7, 3, 3, 7, 0, 3, 6, - 1, 3, 2, 8, 1, 2, 5, 1, 4, 5, 5, 1, 9, 1, 5, 2, 2, 8, 3, 6, 6, 8, 5, 1, 8, - 0, 6, 6, 4, 0, 6, 2, 5, 7, 2, 7, 5, 9, 5, 7, 6, 1, 4, 1, 8, 3, 4, 2, 5, 9, - 0, 3, 3, 2, 0, 3, 1, 2, 5, 3, 6, 3, 7, 9, 7, 8, 8, 0, 7, 0, 9, 1, 7, 1, 2, - 9, 5, 1, 6, 6, 0, 1, 5, 6, 2, 5, 1, 8, 1, 8, 9, 8, 9, 4, 0, 3, 5, 4, 5, 8, - 5, 6, 4, 7, 5, 8, 3, 0, 0, 7, 8, 1, 2, 5, 9, 0, 9, 4, 9, 4, 7, 0, 1, 7, 7, - 2, 9, 2, 8, 2, 3, 7, 9, 1, 5, 0, 3, 9, 0, 6, 2, 5, 4, 5, 4, 7, 4, 7, 3, 5, - 0, 8, 8, 6, 4, 6, 4, 1, 1, 8, 9, 5, 7, 5, 1, 9, 5, 3, 1, 2, 5, 2, 2, 7, 3, - 7, 3, 6, 7, 5, 4, 4, 3, 2, 3, 2, 0, 5, 9, 4, 7, 8, 7, 5, 9, 7, 6, 5, 6, 2, - 5, 1, 1, 3, 6, 8, 6, 8, 3, 7, 7, 2, 1, 6, 1, 6, 0, 2, 9, 7, 3, 9, 3, 7, 9, - 8, 8, 2, 8, 1, 2, 5, 5, 6, 8, 4, 3, 4, 1, 8, 8, 6, 0, 8, 0, 8, 0, 1, 4, 8, - 6, 9, 6, 8, 9, 9, 4, 1, 4, 0, 6, 2, 5, 2, 8, 4, 2, 1, 7, 0, 9, 4, 3, 0, 4, - 0, 4, 0, 0, 7, 4, 3, 4, 8, 4, 4, 9, 7, 0, 7, 0, 3, 1, 2, 5, 1, 4, 2, 1, 0, - 8, 5, 4, 7, 1, 5, 2, 0, 2, 0, 0, 3, 7, 1, 7, 4, 2, 2, 4, 8, 5, 3, 5, 1, 5, - 6, 2, 5, 7, 1, 0, 5, 4, 2, 7, 3, 5, 7, 6, 0, 1, 0, 0, 1, 8, 5, 8, 7, 1, 1, - 2, 4, 2, 6, 7, 5, 7, 8, 1, 2, 5, 3, 5, 5, 2, 7, 1, 3, 6, 7, 8, 8, 0, 0, 5, - 0, 0, 9, 2, 9, 3, 5, 5, 6, 2, 1, 3, 3, 7, 8, 9, 0, 6, 2, 5, 1, 7, 7, 6, 3, - 5, 6, 8, 3, 9, 4, 0, 0, 2, 5, 0, 4, 6, 4, 6, 7, 7, 8, 1, 0, 6, 6, 8, 9, 4, - 5, 3, 1, 2, 5, 8, 8, 8, 1, 7, 8, 4, 1, 9, 7, 0, 0, 1, 2, 5, 2, 3, 2, 3, 3, - 8, 9, 0, 5, 3, 3, 4, 4, 7, 2, 6, 5, 6, 2, 5, 4, 4, 4, 0, 8, 9, 2, 0, 9, 8, - 5, 0, 0, 6, 2, 6, 1, 6, 1, 6, 9, 4, 5, 2, 6, 6, 7, 2, 3, 6, 3, 2, 8, 1, 2, - 5, 2, 2, 2, 0, 4, 4, 6, 0, 4, 9, 2, 5, 0, 3, 1, 3, 0, 8, 0, 8, 4, 7, 2, 6, - 3, 3, 3, 6, 1, 8, 1, 6, 4, 0, 6, 2, 5, 1, 1, 1, 0, 2, 2, 3, 0, 2, 4, 6, 2, - 5, 1, 5, 6, 5, 4, 0, 4, 2, 3, 6, 3, 1, 6, 6, 8, 0, 9, 0, 8, 2, 0, 3, 1, 2, - 5, 5, 5, 5, 1, 1, 1, 5, 1, 2, 3, 1, 2, 5, 7, 8, 2, 7, 0, 2, 1, 1, 8, 1, 5, - 8, 3, 4, 0, 4, 5, 4, 1, 0, 1, 5, 6, 2, 5, 2, 7, 7, 5, 5, 5, 7, 5, 6, 1, 5, - 6, 2, 8, 9, 1, 3, 5, 1, 0, 5, 9, 0, 7, 9, 1, 7, 0, 2, 2, 7, 0, 5, 0, 7, 8, - 1, 2, 5, 1, 3, 8, 7, 7, 7, 8, 7, 8, 0, 7, 8, 1, 4, 4, 5, 6, 7, 5, 5, 2, 9, - 5, 3, 9, 5, 8, 5, 1, 1, 3, 5, 2, 5, 3, 9, 0, 6, 2, 5, 6, 9, 3, 8, 8, 9, 3, - 9, 0, 3, 9, 0, 7, 2, 2, 8, 3, 7, 7, 6, 4, 7, 6, 9, 7, 9, 2, 5, 5, 6, 7, 6, - 2, 6, 9, 5, 3, 1, 2, 5, 3, 4, 6, 9, 4, 4, 6, 9, 5, 1, 9, 5, 3, 6, 1, 4, 1, - 8, 8, 8, 2, 3, 8, 4, 8, 9, 6, 2, 7, 8, 3, 8, 1, 3, 4, 7, 6, 5, 6, 2, 5, 1, - 7, 3, 4, 7, 2, 3, 4, 7, 5, 9, 7, 6, 8, 0, 7, 0, 9, 4, 4, 1, 1, 9, 2, 4, 4, - 8, 1, 3, 9, 1, 9, 0, 6, 7, 3, 8, 2, 8, 1, 2, 5, 8, 6, 7, 3, 6, 1, 7, 3, 7, - 9, 8, 8, 4, 0, 3, 5, 4, 7, 2, 0, 5, 9, 6, 2, 2, 4, 0, 6, 9, 5, 9, 5, 3, 3, - 6, 9, 1, 4, 0, 6, 2, 5, -}; - -// -------- - -// wuffs_base__private_implementation__powers_of_10 contains truncated -// approximations to the powers of 10, ranging from 1e-307 to 1e+288 inclusive, -// as 596 pairs of uint64_t values (a 128-bit mantissa). -// -// There's also an implicit third column (implied by a linear formula involving -// the base-10 exponent) that is the base-2 exponent, biased by a magic -// constant. That constant (1214 or 0x04BE) equals 1023 + 191. 1023 is the bias -// for IEEE 754 double-precision floating point. 191 is ((3 * 64) - 1) and -// wuffs_base__private_implementation__parse_number_f64_eisel_lemire works with -// multiples-of-64-bit mantissas. -// -// For example, the third row holds the approximation to 1e-305: -// 0xE0B62E29_29ABA83C_331ACDAB_FE94DE87 * (2 ** (0x0049 - 0x04BE)) -// -// Similarly, 1e+4 is approximated by: -// 0x9C400000_00000000_00000000_00000000 * (2 ** (0x044C - 0x04BE)) -// -// Similarly, 1e+68 is approximated by: -// 0xED63A231_D4C4FB27_4CA7AAA8_63EE4BDD * (2 ** (0x0520 - 0x04BE)) -// -// This table was generated by by script/print-mpb-powers-of-10.go -static const uint64_t wuffs_base__private_implementation__powers_of_10[596][2] = - { - {0xA5D3B6D479F8E056, 0x8FD0C16206306BAB}, // 1e-307 - {0x8F48A4899877186C, 0xB3C4F1BA87BC8696}, // 1e-306 - {0x331ACDABFE94DE87, 0xE0B62E2929ABA83C}, // 1e-305 - {0x9FF0C08B7F1D0B14, 0x8C71DCD9BA0B4925}, // 1e-304 - {0x07ECF0AE5EE44DD9, 0xAF8E5410288E1B6F}, // 1e-303 - {0xC9E82CD9F69D6150, 0xDB71E91432B1A24A}, // 1e-302 - {0xBE311C083A225CD2, 0x892731AC9FAF056E}, // 1e-301 - {0x6DBD630A48AAF406, 0xAB70FE17C79AC6CA}, // 1e-300 - {0x092CBBCCDAD5B108, 0xD64D3D9DB981787D}, // 1e-299 - {0x25BBF56008C58EA5, 0x85F0468293F0EB4E}, // 1e-298 - {0xAF2AF2B80AF6F24E, 0xA76C582338ED2621}, // 1e-297 - {0x1AF5AF660DB4AEE1, 0xD1476E2C07286FAA}, // 1e-296 - {0x50D98D9FC890ED4D, 0x82CCA4DB847945CA}, // 1e-295 - {0xE50FF107BAB528A0, 0xA37FCE126597973C}, // 1e-294 - {0x1E53ED49A96272C8, 0xCC5FC196FEFD7D0C}, // 1e-293 - {0x25E8E89C13BB0F7A, 0xFF77B1FCBEBCDC4F}, // 1e-292 - {0x77B191618C54E9AC, 0x9FAACF3DF73609B1}, // 1e-291 - {0xD59DF5B9EF6A2417, 0xC795830D75038C1D}, // 1e-290 - {0x4B0573286B44AD1D, 0xF97AE3D0D2446F25}, // 1e-289 - {0x4EE367F9430AEC32, 0x9BECCE62836AC577}, // 1e-288 - {0x229C41F793CDA73F, 0xC2E801FB244576D5}, // 1e-287 - {0x6B43527578C1110F, 0xF3A20279ED56D48A}, // 1e-286 - {0x830A13896B78AAA9, 0x9845418C345644D6}, // 1e-285 - {0x23CC986BC656D553, 0xBE5691EF416BD60C}, // 1e-284 - {0x2CBFBE86B7EC8AA8, 0xEDEC366B11C6CB8F}, // 1e-283 - {0x7BF7D71432F3D6A9, 0x94B3A202EB1C3F39}, // 1e-282 - {0xDAF5CCD93FB0CC53, 0xB9E08A83A5E34F07}, // 1e-281 - {0xD1B3400F8F9CFF68, 0xE858AD248F5C22C9}, // 1e-280 - {0x23100809B9C21FA1, 0x91376C36D99995BE}, // 1e-279 - {0xABD40A0C2832A78A, 0xB58547448FFFFB2D}, // 1e-278 - {0x16C90C8F323F516C, 0xE2E69915B3FFF9F9}, // 1e-277 - {0xAE3DA7D97F6792E3, 0x8DD01FAD907FFC3B}, // 1e-276 - {0x99CD11CFDF41779C, 0xB1442798F49FFB4A}, // 1e-275 - {0x40405643D711D583, 0xDD95317F31C7FA1D}, // 1e-274 - {0x482835EA666B2572, 0x8A7D3EEF7F1CFC52}, // 1e-273 - {0xDA3243650005EECF, 0xAD1C8EAB5EE43B66}, // 1e-272 - {0x90BED43E40076A82, 0xD863B256369D4A40}, // 1e-271 - {0x5A7744A6E804A291, 0x873E4F75E2224E68}, // 1e-270 - {0x711515D0A205CB36, 0xA90DE3535AAAE202}, // 1e-269 - {0x0D5A5B44CA873E03, 0xD3515C2831559A83}, // 1e-268 - {0xE858790AFE9486C2, 0x8412D9991ED58091}, // 1e-267 - {0x626E974DBE39A872, 0xA5178FFF668AE0B6}, // 1e-266 - {0xFB0A3D212DC8128F, 0xCE5D73FF402D98E3}, // 1e-265 - {0x7CE66634BC9D0B99, 0x80FA687F881C7F8E}, // 1e-264 - {0x1C1FFFC1EBC44E80, 0xA139029F6A239F72}, // 1e-263 - {0xA327FFB266B56220, 0xC987434744AC874E}, // 1e-262 - {0x4BF1FF9F0062BAA8, 0xFBE9141915D7A922}, // 1e-261 - {0x6F773FC3603DB4A9, 0x9D71AC8FADA6C9B5}, // 1e-260 - {0xCB550FB4384D21D3, 0xC4CE17B399107C22}, // 1e-259 - {0x7E2A53A146606A48, 0xF6019DA07F549B2B}, // 1e-258 - {0x2EDA7444CBFC426D, 0x99C102844F94E0FB}, // 1e-257 - {0xFA911155FEFB5308, 0xC0314325637A1939}, // 1e-256 - {0x793555AB7EBA27CA, 0xF03D93EEBC589F88}, // 1e-255 - {0x4BC1558B2F3458DE, 0x96267C7535B763B5}, // 1e-254 - {0x9EB1AAEDFB016F16, 0xBBB01B9283253CA2}, // 1e-253 - {0x465E15A979C1CADC, 0xEA9C227723EE8BCB}, // 1e-252 - {0x0BFACD89EC191EC9, 0x92A1958A7675175F}, // 1e-251 - {0xCEF980EC671F667B, 0xB749FAED14125D36}, // 1e-250 - {0x82B7E12780E7401A, 0xE51C79A85916F484}, // 1e-249 - {0xD1B2ECB8B0908810, 0x8F31CC0937AE58D2}, // 1e-248 - {0x861FA7E6DCB4AA15, 0xB2FE3F0B8599EF07}, // 1e-247 - {0x67A791E093E1D49A, 0xDFBDCECE67006AC9}, // 1e-246 - {0xE0C8BB2C5C6D24E0, 0x8BD6A141006042BD}, // 1e-245 - {0x58FAE9F773886E18, 0xAECC49914078536D}, // 1e-244 - {0xAF39A475506A899E, 0xDA7F5BF590966848}, // 1e-243 - {0x6D8406C952429603, 0x888F99797A5E012D}, // 1e-242 - {0xC8E5087BA6D33B83, 0xAAB37FD7D8F58178}, // 1e-241 - {0xFB1E4A9A90880A64, 0xD5605FCDCF32E1D6}, // 1e-240 - {0x5CF2EEA09A55067F, 0x855C3BE0A17FCD26}, // 1e-239 - {0xF42FAA48C0EA481E, 0xA6B34AD8C9DFC06F}, // 1e-238 - {0xF13B94DAF124DA26, 0xD0601D8EFC57B08B}, // 1e-237 - {0x76C53D08D6B70858, 0x823C12795DB6CE57}, // 1e-236 - {0x54768C4B0C64CA6E, 0xA2CB1717B52481ED}, // 1e-235 - {0xA9942F5DCF7DFD09, 0xCB7DDCDDA26DA268}, // 1e-234 - {0xD3F93B35435D7C4C, 0xFE5D54150B090B02}, // 1e-233 - {0xC47BC5014A1A6DAF, 0x9EFA548D26E5A6E1}, // 1e-232 - {0x359AB6419CA1091B, 0xC6B8E9B0709F109A}, // 1e-231 - {0xC30163D203C94B62, 0xF867241C8CC6D4C0}, // 1e-230 - {0x79E0DE63425DCF1D, 0x9B407691D7FC44F8}, // 1e-229 - {0x985915FC12F542E4, 0xC21094364DFB5636}, // 1e-228 - {0x3E6F5B7B17B2939D, 0xF294B943E17A2BC4}, // 1e-227 - {0xA705992CEECF9C42, 0x979CF3CA6CEC5B5A}, // 1e-226 - {0x50C6FF782A838353, 0xBD8430BD08277231}, // 1e-225 - {0xA4F8BF5635246428, 0xECE53CEC4A314EBD}, // 1e-224 - {0x871B7795E136BE99, 0x940F4613AE5ED136}, // 1e-223 - {0x28E2557B59846E3F, 0xB913179899F68584}, // 1e-222 - {0x331AEADA2FE589CF, 0xE757DD7EC07426E5}, // 1e-221 - {0x3FF0D2C85DEF7621, 0x9096EA6F3848984F}, // 1e-220 - {0x0FED077A756B53A9, 0xB4BCA50B065ABE63}, // 1e-219 - {0xD3E8495912C62894, 0xE1EBCE4DC7F16DFB}, // 1e-218 - {0x64712DD7ABBBD95C, 0x8D3360F09CF6E4BD}, // 1e-217 - {0xBD8D794D96AACFB3, 0xB080392CC4349DEC}, // 1e-216 - {0xECF0D7A0FC5583A0, 0xDCA04777F541C567}, // 1e-215 - {0xF41686C49DB57244, 0x89E42CAAF9491B60}, // 1e-214 - {0x311C2875C522CED5, 0xAC5D37D5B79B6239}, // 1e-213 - {0x7D633293366B828B, 0xD77485CB25823AC7}, // 1e-212 - {0xAE5DFF9C02033197, 0x86A8D39EF77164BC}, // 1e-211 - {0xD9F57F830283FDFC, 0xA8530886B54DBDEB}, // 1e-210 - {0xD072DF63C324FD7B, 0xD267CAA862A12D66}, // 1e-209 - {0x4247CB9E59F71E6D, 0x8380DEA93DA4BC60}, // 1e-208 - {0x52D9BE85F074E608, 0xA46116538D0DEB78}, // 1e-207 - {0x67902E276C921F8B, 0xCD795BE870516656}, // 1e-206 - {0x00BA1CD8A3DB53B6, 0x806BD9714632DFF6}, // 1e-205 - {0x80E8A40ECCD228A4, 0xA086CFCD97BF97F3}, // 1e-204 - {0x6122CD128006B2CD, 0xC8A883C0FDAF7DF0}, // 1e-203 - {0x796B805720085F81, 0xFAD2A4B13D1B5D6C}, // 1e-202 - {0xCBE3303674053BB0, 0x9CC3A6EEC6311A63}, // 1e-201 - {0xBEDBFC4411068A9C, 0xC3F490AA77BD60FC}, // 1e-200 - {0xEE92FB5515482D44, 0xF4F1B4D515ACB93B}, // 1e-199 - {0x751BDD152D4D1C4A, 0x991711052D8BF3C5}, // 1e-198 - {0xD262D45A78A0635D, 0xBF5CD54678EEF0B6}, // 1e-197 - {0x86FB897116C87C34, 0xEF340A98172AACE4}, // 1e-196 - {0xD45D35E6AE3D4DA0, 0x9580869F0E7AAC0E}, // 1e-195 - {0x8974836059CCA109, 0xBAE0A846D2195712}, // 1e-194 - {0x2BD1A438703FC94B, 0xE998D258869FACD7}, // 1e-193 - {0x7B6306A34627DDCF, 0x91FF83775423CC06}, // 1e-192 - {0x1A3BC84C17B1D542, 0xB67F6455292CBF08}, // 1e-191 - {0x20CABA5F1D9E4A93, 0xE41F3D6A7377EECA}, // 1e-190 - {0x547EB47B7282EE9C, 0x8E938662882AF53E}, // 1e-189 - {0xE99E619A4F23AA43, 0xB23867FB2A35B28D}, // 1e-188 - {0x6405FA00E2EC94D4, 0xDEC681F9F4C31F31}, // 1e-187 - {0xDE83BC408DD3DD04, 0x8B3C113C38F9F37E}, // 1e-186 - {0x9624AB50B148D445, 0xAE0B158B4738705E}, // 1e-185 - {0x3BADD624DD9B0957, 0xD98DDAEE19068C76}, // 1e-184 - {0xE54CA5D70A80E5D6, 0x87F8A8D4CFA417C9}, // 1e-183 - {0x5E9FCF4CCD211F4C, 0xA9F6D30A038D1DBC}, // 1e-182 - {0x7647C3200069671F, 0xD47487CC8470652B}, // 1e-181 - {0x29ECD9F40041E073, 0x84C8D4DFD2C63F3B}, // 1e-180 - {0xF468107100525890, 0xA5FB0A17C777CF09}, // 1e-179 - {0x7182148D4066EEB4, 0xCF79CC9DB955C2CC}, // 1e-178 - {0xC6F14CD848405530, 0x81AC1FE293D599BF}, // 1e-177 - {0xB8ADA00E5A506A7C, 0xA21727DB38CB002F}, // 1e-176 - {0xA6D90811F0E4851C, 0xCA9CF1D206FDC03B}, // 1e-175 - {0x908F4A166D1DA663, 0xFD442E4688BD304A}, // 1e-174 - {0x9A598E4E043287FE, 0x9E4A9CEC15763E2E}, // 1e-173 - {0x40EFF1E1853F29FD, 0xC5DD44271AD3CDBA}, // 1e-172 - {0xD12BEE59E68EF47C, 0xF7549530E188C128}, // 1e-171 - {0x82BB74F8301958CE, 0x9A94DD3E8CF578B9}, // 1e-170 - {0xE36A52363C1FAF01, 0xC13A148E3032D6E7}, // 1e-169 - {0xDC44E6C3CB279AC1, 0xF18899B1BC3F8CA1}, // 1e-168 - {0x29AB103A5EF8C0B9, 0x96F5600F15A7B7E5}, // 1e-167 - {0x7415D448F6B6F0E7, 0xBCB2B812DB11A5DE}, // 1e-166 - {0x111B495B3464AD21, 0xEBDF661791D60F56}, // 1e-165 - {0xCAB10DD900BEEC34, 0x936B9FCEBB25C995}, // 1e-164 - {0x3D5D514F40EEA742, 0xB84687C269EF3BFB}, // 1e-163 - {0x0CB4A5A3112A5112, 0xE65829B3046B0AFA}, // 1e-162 - {0x47F0E785EABA72AB, 0x8FF71A0FE2C2E6DC}, // 1e-161 - {0x59ED216765690F56, 0xB3F4E093DB73A093}, // 1e-160 - {0x306869C13EC3532C, 0xE0F218B8D25088B8}, // 1e-159 - {0x1E414218C73A13FB, 0x8C974F7383725573}, // 1e-158 - {0xE5D1929EF90898FA, 0xAFBD2350644EEACF}, // 1e-157 - {0xDF45F746B74ABF39, 0xDBAC6C247D62A583}, // 1e-156 - {0x6B8BBA8C328EB783, 0x894BC396CE5DA772}, // 1e-155 - {0x066EA92F3F326564, 0xAB9EB47C81F5114F}, // 1e-154 - {0xC80A537B0EFEFEBD, 0xD686619BA27255A2}, // 1e-153 - {0xBD06742CE95F5F36, 0x8613FD0145877585}, // 1e-152 - {0x2C48113823B73704, 0xA798FC4196E952E7}, // 1e-151 - {0xF75A15862CA504C5, 0xD17F3B51FCA3A7A0}, // 1e-150 - {0x9A984D73DBE722FB, 0x82EF85133DE648C4}, // 1e-149 - {0xC13E60D0D2E0EBBA, 0xA3AB66580D5FDAF5}, // 1e-148 - {0x318DF905079926A8, 0xCC963FEE10B7D1B3}, // 1e-147 - {0xFDF17746497F7052, 0xFFBBCFE994E5C61F}, // 1e-146 - {0xFEB6EA8BEDEFA633, 0x9FD561F1FD0F9BD3}, // 1e-145 - {0xFE64A52EE96B8FC0, 0xC7CABA6E7C5382C8}, // 1e-144 - {0x3DFDCE7AA3C673B0, 0xF9BD690A1B68637B}, // 1e-143 - {0x06BEA10CA65C084E, 0x9C1661A651213E2D}, // 1e-142 - {0x486E494FCFF30A62, 0xC31BFA0FE5698DB8}, // 1e-141 - {0x5A89DBA3C3EFCCFA, 0xF3E2F893DEC3F126}, // 1e-140 - {0xF89629465A75E01C, 0x986DDB5C6B3A76B7}, // 1e-139 - {0xF6BBB397F1135823, 0xBE89523386091465}, // 1e-138 - {0x746AA07DED582E2C, 0xEE2BA6C0678B597F}, // 1e-137 - {0xA8C2A44EB4571CDC, 0x94DB483840B717EF}, // 1e-136 - {0x92F34D62616CE413, 0xBA121A4650E4DDEB}, // 1e-135 - {0x77B020BAF9C81D17, 0xE896A0D7E51E1566}, // 1e-134 - {0x0ACE1474DC1D122E, 0x915E2486EF32CD60}, // 1e-133 - {0x0D819992132456BA, 0xB5B5ADA8AAFF80B8}, // 1e-132 - {0x10E1FFF697ED6C69, 0xE3231912D5BF60E6}, // 1e-131 - {0xCA8D3FFA1EF463C1, 0x8DF5EFABC5979C8F}, // 1e-130 - {0xBD308FF8A6B17CB2, 0xB1736B96B6FD83B3}, // 1e-129 - {0xAC7CB3F6D05DDBDE, 0xDDD0467C64BCE4A0}, // 1e-128 - {0x6BCDF07A423AA96B, 0x8AA22C0DBEF60EE4}, // 1e-127 - {0x86C16C98D2C953C6, 0xAD4AB7112EB3929D}, // 1e-126 - {0xE871C7BF077BA8B7, 0xD89D64D57A607744}, // 1e-125 - {0x11471CD764AD4972, 0x87625F056C7C4A8B}, // 1e-124 - {0xD598E40D3DD89BCF, 0xA93AF6C6C79B5D2D}, // 1e-123 - {0x4AFF1D108D4EC2C3, 0xD389B47879823479}, // 1e-122 - {0xCEDF722A585139BA, 0x843610CB4BF160CB}, // 1e-121 - {0xC2974EB4EE658828, 0xA54394FE1EEDB8FE}, // 1e-120 - {0x733D226229FEEA32, 0xCE947A3DA6A9273E}, // 1e-119 - {0x0806357D5A3F525F, 0x811CCC668829B887}, // 1e-118 - {0xCA07C2DCB0CF26F7, 0xA163FF802A3426A8}, // 1e-117 - {0xFC89B393DD02F0B5, 0xC9BCFF6034C13052}, // 1e-116 - {0xBBAC2078D443ACE2, 0xFC2C3F3841F17C67}, // 1e-115 - {0xD54B944B84AA4C0D, 0x9D9BA7832936EDC0}, // 1e-114 - {0x0A9E795E65D4DF11, 0xC5029163F384A931}, // 1e-113 - {0x4D4617B5FF4A16D5, 0xF64335BCF065D37D}, // 1e-112 - {0x504BCED1BF8E4E45, 0x99EA0196163FA42E}, // 1e-111 - {0xE45EC2862F71E1D6, 0xC06481FB9BCF8D39}, // 1e-110 - {0x5D767327BB4E5A4C, 0xF07DA27A82C37088}, // 1e-109 - {0x3A6A07F8D510F86F, 0x964E858C91BA2655}, // 1e-108 - {0x890489F70A55368B, 0xBBE226EFB628AFEA}, // 1e-107 - {0x2B45AC74CCEA842E, 0xEADAB0ABA3B2DBE5}, // 1e-106 - {0x3B0B8BC90012929D, 0x92C8AE6B464FC96F}, // 1e-105 - {0x09CE6EBB40173744, 0xB77ADA0617E3BBCB}, // 1e-104 - {0xCC420A6A101D0515, 0xE55990879DDCAABD}, // 1e-103 - {0x9FA946824A12232D, 0x8F57FA54C2A9EAB6}, // 1e-102 - {0x47939822DC96ABF9, 0xB32DF8E9F3546564}, // 1e-101 - {0x59787E2B93BC56F7, 0xDFF9772470297EBD}, // 1e-100 - {0x57EB4EDB3C55B65A, 0x8BFBEA76C619EF36}, // 1e-99 - {0xEDE622920B6B23F1, 0xAEFAE51477A06B03}, // 1e-98 - {0xE95FAB368E45ECED, 0xDAB99E59958885C4}, // 1e-97 - {0x11DBCB0218EBB414, 0x88B402F7FD75539B}, // 1e-96 - {0xD652BDC29F26A119, 0xAAE103B5FCD2A881}, // 1e-95 - {0x4BE76D3346F0495F, 0xD59944A37C0752A2}, // 1e-94 - {0x6F70A4400C562DDB, 0x857FCAE62D8493A5}, // 1e-93 - {0xCB4CCD500F6BB952, 0xA6DFBD9FB8E5B88E}, // 1e-92 - {0x7E2000A41346A7A7, 0xD097AD07A71F26B2}, // 1e-91 - {0x8ED400668C0C28C8, 0x825ECC24C873782F}, // 1e-90 - {0x728900802F0F32FA, 0xA2F67F2DFA90563B}, // 1e-89 - {0x4F2B40A03AD2FFB9, 0xCBB41EF979346BCA}, // 1e-88 - {0xE2F610C84987BFA8, 0xFEA126B7D78186BC}, // 1e-87 - {0x0DD9CA7D2DF4D7C9, 0x9F24B832E6B0F436}, // 1e-86 - {0x91503D1C79720DBB, 0xC6EDE63FA05D3143}, // 1e-85 - {0x75A44C6397CE912A, 0xF8A95FCF88747D94}, // 1e-84 - {0xC986AFBE3EE11ABA, 0x9B69DBE1B548CE7C}, // 1e-83 - {0xFBE85BADCE996168, 0xC24452DA229B021B}, // 1e-82 - {0xFAE27299423FB9C3, 0xF2D56790AB41C2A2}, // 1e-81 - {0xDCCD879FC967D41A, 0x97C560BA6B0919A5}, // 1e-80 - {0x5400E987BBC1C920, 0xBDB6B8E905CB600F}, // 1e-79 - {0x290123E9AAB23B68, 0xED246723473E3813}, // 1e-78 - {0xF9A0B6720AAF6521, 0x9436C0760C86E30B}, // 1e-77 - {0xF808E40E8D5B3E69, 0xB94470938FA89BCE}, // 1e-76 - {0xB60B1D1230B20E04, 0xE7958CB87392C2C2}, // 1e-75 - {0xB1C6F22B5E6F48C2, 0x90BD77F3483BB9B9}, // 1e-74 - {0x1E38AEB6360B1AF3, 0xB4ECD5F01A4AA828}, // 1e-73 - {0x25C6DA63C38DE1B0, 0xE2280B6C20DD5232}, // 1e-72 - {0x579C487E5A38AD0E, 0x8D590723948A535F}, // 1e-71 - {0x2D835A9DF0C6D851, 0xB0AF48EC79ACE837}, // 1e-70 - {0xF8E431456CF88E65, 0xDCDB1B2798182244}, // 1e-69 - {0x1B8E9ECB641B58FF, 0x8A08F0F8BF0F156B}, // 1e-68 - {0xE272467E3D222F3F, 0xAC8B2D36EED2DAC5}, // 1e-67 - {0x5B0ED81DCC6ABB0F, 0xD7ADF884AA879177}, // 1e-66 - {0x98E947129FC2B4E9, 0x86CCBB52EA94BAEA}, // 1e-65 - {0x3F2398D747B36224, 0xA87FEA27A539E9A5}, // 1e-64 - {0x8EEC7F0D19A03AAD, 0xD29FE4B18E88640E}, // 1e-63 - {0x1953CF68300424AC, 0x83A3EEEEF9153E89}, // 1e-62 - {0x5FA8C3423C052DD7, 0xA48CEAAAB75A8E2B}, // 1e-61 - {0x3792F412CB06794D, 0xCDB02555653131B6}, // 1e-60 - {0xE2BBD88BBEE40BD0, 0x808E17555F3EBF11}, // 1e-59 - {0x5B6ACEAEAE9D0EC4, 0xA0B19D2AB70E6ED6}, // 1e-58 - {0xF245825A5A445275, 0xC8DE047564D20A8B}, // 1e-57 - {0xEED6E2F0F0D56712, 0xFB158592BE068D2E}, // 1e-56 - {0x55464DD69685606B, 0x9CED737BB6C4183D}, // 1e-55 - {0xAA97E14C3C26B886, 0xC428D05AA4751E4C}, // 1e-54 - {0xD53DD99F4B3066A8, 0xF53304714D9265DF}, // 1e-53 - {0xE546A8038EFE4029, 0x993FE2C6D07B7FAB}, // 1e-52 - {0xDE98520472BDD033, 0xBF8FDB78849A5F96}, // 1e-51 - {0x963E66858F6D4440, 0xEF73D256A5C0F77C}, // 1e-50 - {0xDDE7001379A44AA8, 0x95A8637627989AAD}, // 1e-49 - {0x5560C018580D5D52, 0xBB127C53B17EC159}, // 1e-48 - {0xAAB8F01E6E10B4A6, 0xE9D71B689DDE71AF}, // 1e-47 - {0xCAB3961304CA70E8, 0x9226712162AB070D}, // 1e-46 - {0x3D607B97C5FD0D22, 0xB6B00D69BB55C8D1}, // 1e-45 - {0x8CB89A7DB77C506A, 0xE45C10C42A2B3B05}, // 1e-44 - {0x77F3608E92ADB242, 0x8EB98A7A9A5B04E3}, // 1e-43 - {0x55F038B237591ED3, 0xB267ED1940F1C61C}, // 1e-42 - {0x6B6C46DEC52F6688, 0xDF01E85F912E37A3}, // 1e-41 - {0x2323AC4B3B3DA015, 0x8B61313BBABCE2C6}, // 1e-40 - {0xABEC975E0A0D081A, 0xAE397D8AA96C1B77}, // 1e-39 - {0x96E7BD358C904A21, 0xD9C7DCED53C72255}, // 1e-38 - {0x7E50D64177DA2E54, 0x881CEA14545C7575}, // 1e-37 - {0xDDE50BD1D5D0B9E9, 0xAA242499697392D2}, // 1e-36 - {0x955E4EC64B44E864, 0xD4AD2DBFC3D07787}, // 1e-35 - {0xBD5AF13BEF0B113E, 0x84EC3C97DA624AB4}, // 1e-34 - {0xECB1AD8AEACDD58E, 0xA6274BBDD0FADD61}, // 1e-33 - {0x67DE18EDA5814AF2, 0xCFB11EAD453994BA}, // 1e-32 - {0x80EACF948770CED7, 0x81CEB32C4B43FCF4}, // 1e-31 - {0xA1258379A94D028D, 0xA2425FF75E14FC31}, // 1e-30 - {0x096EE45813A04330, 0xCAD2F7F5359A3B3E}, // 1e-29 - {0x8BCA9D6E188853FC, 0xFD87B5F28300CA0D}, // 1e-28 - {0x775EA264CF55347D, 0x9E74D1B791E07E48}, // 1e-27 - {0x95364AFE032A819D, 0xC612062576589DDA}, // 1e-26 - {0x3A83DDBD83F52204, 0xF79687AED3EEC551}, // 1e-25 - {0xC4926A9672793542, 0x9ABE14CD44753B52}, // 1e-24 - {0x75B7053C0F178293, 0xC16D9A0095928A27}, // 1e-23 - {0x5324C68B12DD6338, 0xF1C90080BAF72CB1}, // 1e-22 - {0xD3F6FC16EBCA5E03, 0x971DA05074DA7BEE}, // 1e-21 - {0x88F4BB1CA6BCF584, 0xBCE5086492111AEA}, // 1e-20 - {0x2B31E9E3D06C32E5, 0xEC1E4A7DB69561A5}, // 1e-19 - {0x3AFF322E62439FCF, 0x9392EE8E921D5D07}, // 1e-18 - {0x09BEFEB9FAD487C2, 0xB877AA3236A4B449}, // 1e-17 - {0x4C2EBE687989A9B3, 0xE69594BEC44DE15B}, // 1e-16 - {0x0F9D37014BF60A10, 0x901D7CF73AB0ACD9}, // 1e-15 - {0x538484C19EF38C94, 0xB424DC35095CD80F}, // 1e-14 - {0x2865A5F206B06FB9, 0xE12E13424BB40E13}, // 1e-13 - {0xF93F87B7442E45D3, 0x8CBCCC096F5088CB}, // 1e-12 - {0xF78F69A51539D748, 0xAFEBFF0BCB24AAFE}, // 1e-11 - {0xB573440E5A884D1B, 0xDBE6FECEBDEDD5BE}, // 1e-10 - {0x31680A88F8953030, 0x89705F4136B4A597}, // 1e-9 - {0xFDC20D2B36BA7C3D, 0xABCC77118461CEFC}, // 1e-8 - {0x3D32907604691B4C, 0xD6BF94D5E57A42BC}, // 1e-7 - {0xA63F9A49C2C1B10F, 0x8637BD05AF6C69B5}, // 1e-6 - {0x0FCF80DC33721D53, 0xA7C5AC471B478423}, // 1e-5 - {0xD3C36113404EA4A8, 0xD1B71758E219652B}, // 1e-4 - {0x645A1CAC083126E9, 0x83126E978D4FDF3B}, // 1e-3 - {0x3D70A3D70A3D70A3, 0xA3D70A3D70A3D70A}, // 1e-2 - {0xCCCCCCCCCCCCCCCC, 0xCCCCCCCCCCCCCCCC}, // 1e-1 - {0x0000000000000000, 0x8000000000000000}, // 1e0 - {0x0000000000000000, 0xA000000000000000}, // 1e1 - {0x0000000000000000, 0xC800000000000000}, // 1e2 - {0x0000000000000000, 0xFA00000000000000}, // 1e3 - {0x0000000000000000, 0x9C40000000000000}, // 1e4 - {0x0000000000000000, 0xC350000000000000}, // 1e5 - {0x0000000000000000, 0xF424000000000000}, // 1e6 - {0x0000000000000000, 0x9896800000000000}, // 1e7 - {0x0000000000000000, 0xBEBC200000000000}, // 1e8 - {0x0000000000000000, 0xEE6B280000000000}, // 1e9 - {0x0000000000000000, 0x9502F90000000000}, // 1e10 - {0x0000000000000000, 0xBA43B74000000000}, // 1e11 - {0x0000000000000000, 0xE8D4A51000000000}, // 1e12 - {0x0000000000000000, 0x9184E72A00000000}, // 1e13 - {0x0000000000000000, 0xB5E620F480000000}, // 1e14 - {0x0000000000000000, 0xE35FA931A0000000}, // 1e15 - {0x0000000000000000, 0x8E1BC9BF04000000}, // 1e16 - {0x0000000000000000, 0xB1A2BC2EC5000000}, // 1e17 - {0x0000000000000000, 0xDE0B6B3A76400000}, // 1e18 - {0x0000000000000000, 0x8AC7230489E80000}, // 1e19 - {0x0000000000000000, 0xAD78EBC5AC620000}, // 1e20 - {0x0000000000000000, 0xD8D726B7177A8000}, // 1e21 - {0x0000000000000000, 0x878678326EAC9000}, // 1e22 - {0x0000000000000000, 0xA968163F0A57B400}, // 1e23 - {0x0000000000000000, 0xD3C21BCECCEDA100}, // 1e24 - {0x0000000000000000, 0x84595161401484A0}, // 1e25 - {0x0000000000000000, 0xA56FA5B99019A5C8}, // 1e26 - {0x0000000000000000, 0xCECB8F27F4200F3A}, // 1e27 - {0x4000000000000000, 0x813F3978F8940984}, // 1e28 - {0x5000000000000000, 0xA18F07D736B90BE5}, // 1e29 - {0xA400000000000000, 0xC9F2C9CD04674EDE}, // 1e30 - {0x4D00000000000000, 0xFC6F7C4045812296}, // 1e31 - {0xF020000000000000, 0x9DC5ADA82B70B59D}, // 1e32 - {0x6C28000000000000, 0xC5371912364CE305}, // 1e33 - {0xC732000000000000, 0xF684DF56C3E01BC6}, // 1e34 - {0x3C7F400000000000, 0x9A130B963A6C115C}, // 1e35 - {0x4B9F100000000000, 0xC097CE7BC90715B3}, // 1e36 - {0x1E86D40000000000, 0xF0BDC21ABB48DB20}, // 1e37 - {0x1314448000000000, 0x96769950B50D88F4}, // 1e38 - {0x17D955A000000000, 0xBC143FA4E250EB31}, // 1e39 - {0x5DCFAB0800000000, 0xEB194F8E1AE525FD}, // 1e40 - {0x5AA1CAE500000000, 0x92EFD1B8D0CF37BE}, // 1e41 - {0xF14A3D9E40000000, 0xB7ABC627050305AD}, // 1e42 - {0x6D9CCD05D0000000, 0xE596B7B0C643C719}, // 1e43 - {0xE4820023A2000000, 0x8F7E32CE7BEA5C6F}, // 1e44 - {0xDDA2802C8A800000, 0xB35DBF821AE4F38B}, // 1e45 - {0xD50B2037AD200000, 0xE0352F62A19E306E}, // 1e46 - {0x4526F422CC340000, 0x8C213D9DA502DE45}, // 1e47 - {0x9670B12B7F410000, 0xAF298D050E4395D6}, // 1e48 - {0x3C0CDD765F114000, 0xDAF3F04651D47B4C}, // 1e49 - {0xA5880A69FB6AC800, 0x88D8762BF324CD0F}, // 1e50 - {0x8EEA0D047A457A00, 0xAB0E93B6EFEE0053}, // 1e51 - {0x72A4904598D6D880, 0xD5D238A4ABE98068}, // 1e52 - {0x47A6DA2B7F864750, 0x85A36366EB71F041}, // 1e53 - {0x999090B65F67D924, 0xA70C3C40A64E6C51}, // 1e54 - {0xFFF4B4E3F741CF6D, 0xD0CF4B50CFE20765}, // 1e55 - {0xBFF8F10E7A8921A4, 0x82818F1281ED449F}, // 1e56 - {0xAFF72D52192B6A0D, 0xA321F2D7226895C7}, // 1e57 - {0x9BF4F8A69F764490, 0xCBEA6F8CEB02BB39}, // 1e58 - {0x02F236D04753D5B4, 0xFEE50B7025C36A08}, // 1e59 - {0x01D762422C946590, 0x9F4F2726179A2245}, // 1e60 - {0x424D3AD2B7B97EF5, 0xC722F0EF9D80AAD6}, // 1e61 - {0xD2E0898765A7DEB2, 0xF8EBAD2B84E0D58B}, // 1e62 - {0x63CC55F49F88EB2F, 0x9B934C3B330C8577}, // 1e63 - {0x3CBF6B71C76B25FB, 0xC2781F49FFCFA6D5}, // 1e64 - {0x8BEF464E3945EF7A, 0xF316271C7FC3908A}, // 1e65 - {0x97758BF0E3CBB5AC, 0x97EDD871CFDA3A56}, // 1e66 - {0x3D52EEED1CBEA317, 0xBDE94E8E43D0C8EC}, // 1e67 - {0x4CA7AAA863EE4BDD, 0xED63A231D4C4FB27}, // 1e68 - {0x8FE8CAA93E74EF6A, 0x945E455F24FB1CF8}, // 1e69 - {0xB3E2FD538E122B44, 0xB975D6B6EE39E436}, // 1e70 - {0x60DBBCA87196B616, 0xE7D34C64A9C85D44}, // 1e71 - {0xBC8955E946FE31CD, 0x90E40FBEEA1D3A4A}, // 1e72 - {0x6BABAB6398BDBE41, 0xB51D13AEA4A488DD}, // 1e73 - {0xC696963C7EED2DD1, 0xE264589A4DCDAB14}, // 1e74 - {0xFC1E1DE5CF543CA2, 0x8D7EB76070A08AEC}, // 1e75 - {0x3B25A55F43294BCB, 0xB0DE65388CC8ADA8}, // 1e76 - {0x49EF0EB713F39EBE, 0xDD15FE86AFFAD912}, // 1e77 - {0x6E3569326C784337, 0x8A2DBF142DFCC7AB}, // 1e78 - {0x49C2C37F07965404, 0xACB92ED9397BF996}, // 1e79 - {0xDC33745EC97BE906, 0xD7E77A8F87DAF7FB}, // 1e80 - {0x69A028BB3DED71A3, 0x86F0AC99B4E8DAFD}, // 1e81 - {0xC40832EA0D68CE0C, 0xA8ACD7C0222311BC}, // 1e82 - {0xF50A3FA490C30190, 0xD2D80DB02AABD62B}, // 1e83 - {0x792667C6DA79E0FA, 0x83C7088E1AAB65DB}, // 1e84 - {0x577001B891185938, 0xA4B8CAB1A1563F52}, // 1e85 - {0xED4C0226B55E6F86, 0xCDE6FD5E09ABCF26}, // 1e86 - {0x544F8158315B05B4, 0x80B05E5AC60B6178}, // 1e87 - {0x696361AE3DB1C721, 0xA0DC75F1778E39D6}, // 1e88 - {0x03BC3A19CD1E38E9, 0xC913936DD571C84C}, // 1e89 - {0x04AB48A04065C723, 0xFB5878494ACE3A5F}, // 1e90 - {0x62EB0D64283F9C76, 0x9D174B2DCEC0E47B}, // 1e91 - {0x3BA5D0BD324F8394, 0xC45D1DF942711D9A}, // 1e92 - {0xCA8F44EC7EE36479, 0xF5746577930D6500}, // 1e93 - {0x7E998B13CF4E1ECB, 0x9968BF6ABBE85F20}, // 1e94 - {0x9E3FEDD8C321A67E, 0xBFC2EF456AE276E8}, // 1e95 - {0xC5CFE94EF3EA101E, 0xEFB3AB16C59B14A2}, // 1e96 - {0xBBA1F1D158724A12, 0x95D04AEE3B80ECE5}, // 1e97 - {0x2A8A6E45AE8EDC97, 0xBB445DA9CA61281F}, // 1e98 - {0xF52D09D71A3293BD, 0xEA1575143CF97226}, // 1e99 - {0x593C2626705F9C56, 0x924D692CA61BE758}, // 1e100 - {0x6F8B2FB00C77836C, 0xB6E0C377CFA2E12E}, // 1e101 - {0x0B6DFB9C0F956447, 0xE498F455C38B997A}, // 1e102 - {0x4724BD4189BD5EAC, 0x8EDF98B59A373FEC}, // 1e103 - {0x58EDEC91EC2CB657, 0xB2977EE300C50FE7}, // 1e104 - {0x2F2967B66737E3ED, 0xDF3D5E9BC0F653E1}, // 1e105 - {0xBD79E0D20082EE74, 0x8B865B215899F46C}, // 1e106 - {0xECD8590680A3AA11, 0xAE67F1E9AEC07187}, // 1e107 - {0xE80E6F4820CC9495, 0xDA01EE641A708DE9}, // 1e108 - {0x3109058D147FDCDD, 0x884134FE908658B2}, // 1e109 - {0xBD4B46F0599FD415, 0xAA51823E34A7EEDE}, // 1e110 - {0x6C9E18AC7007C91A, 0xD4E5E2CDC1D1EA96}, // 1e111 - {0x03E2CF6BC604DDB0, 0x850FADC09923329E}, // 1e112 - {0x84DB8346B786151C, 0xA6539930BF6BFF45}, // 1e113 - {0xE612641865679A63, 0xCFE87F7CEF46FF16}, // 1e114 - {0x4FCB7E8F3F60C07E, 0x81F14FAE158C5F6E}, // 1e115 - {0xE3BE5E330F38F09D, 0xA26DA3999AEF7749}, // 1e116 - {0x5CADF5BFD3072CC5, 0xCB090C8001AB551C}, // 1e117 - {0x73D9732FC7C8F7F6, 0xFDCB4FA002162A63}, // 1e118 - {0x2867E7FDDCDD9AFA, 0x9E9F11C4014DDA7E}, // 1e119 - {0xB281E1FD541501B8, 0xC646D63501A1511D}, // 1e120 - {0x1F225A7CA91A4226, 0xF7D88BC24209A565}, // 1e121 - {0x3375788DE9B06958, 0x9AE757596946075F}, // 1e122 - {0x0052D6B1641C83AE, 0xC1A12D2FC3978937}, // 1e123 - {0xC0678C5DBD23A49A, 0xF209787BB47D6B84}, // 1e124 - {0xF840B7BA963646E0, 0x9745EB4D50CE6332}, // 1e125 - {0xB650E5A93BC3D898, 0xBD176620A501FBFF}, // 1e126 - {0xA3E51F138AB4CEBE, 0xEC5D3FA8CE427AFF}, // 1e127 - {0xC66F336C36B10137, 0x93BA47C980E98CDF}, // 1e128 - {0xB80B0047445D4184, 0xB8A8D9BBE123F017}, // 1e129 - {0xA60DC059157491E5, 0xE6D3102AD96CEC1D}, // 1e130 - {0x87C89837AD68DB2F, 0x9043EA1AC7E41392}, // 1e131 - {0x29BABE4598C311FB, 0xB454E4A179DD1877}, // 1e132 - {0xF4296DD6FEF3D67A, 0xE16A1DC9D8545E94}, // 1e133 - {0x1899E4A65F58660C, 0x8CE2529E2734BB1D}, // 1e134 - {0x5EC05DCFF72E7F8F, 0xB01AE745B101E9E4}, // 1e135 - {0x76707543F4FA1F73, 0xDC21A1171D42645D}, // 1e136 - {0x6A06494A791C53A8, 0x899504AE72497EBA}, // 1e137 - {0x0487DB9D17636892, 0xABFA45DA0EDBDE69}, // 1e138 - {0x45A9D2845D3C42B6, 0xD6F8D7509292D603}, // 1e139 - {0x0B8A2392BA45A9B2, 0x865B86925B9BC5C2}, // 1e140 - {0x8E6CAC7768D7141E, 0xA7F26836F282B732}, // 1e141 - {0x3207D795430CD926, 0xD1EF0244AF2364FF}, // 1e142 - {0x7F44E6BD49E807B8, 0x8335616AED761F1F}, // 1e143 - {0x5F16206C9C6209A6, 0xA402B9C5A8D3A6E7}, // 1e144 - {0x36DBA887C37A8C0F, 0xCD036837130890A1}, // 1e145 - {0xC2494954DA2C9789, 0x802221226BE55A64}, // 1e146 - {0xF2DB9BAA10B7BD6C, 0xA02AA96B06DEB0FD}, // 1e147 - {0x6F92829494E5ACC7, 0xC83553C5C8965D3D}, // 1e148 - {0xCB772339BA1F17F9, 0xFA42A8B73ABBF48C}, // 1e149 - {0xFF2A760414536EFB, 0x9C69A97284B578D7}, // 1e150 - {0xFEF5138519684ABA, 0xC38413CF25E2D70D}, // 1e151 - {0x7EB258665FC25D69, 0xF46518C2EF5B8CD1}, // 1e152 - {0xEF2F773FFBD97A61, 0x98BF2F79D5993802}, // 1e153 - {0xAAFB550FFACFD8FA, 0xBEEEFB584AFF8603}, // 1e154 - {0x95BA2A53F983CF38, 0xEEAABA2E5DBF6784}, // 1e155 - {0xDD945A747BF26183, 0x952AB45CFA97A0B2}, // 1e156 - {0x94F971119AEEF9E4, 0xBA756174393D88DF}, // 1e157 - {0x7A37CD5601AAB85D, 0xE912B9D1478CEB17}, // 1e158 - {0xAC62E055C10AB33A, 0x91ABB422CCB812EE}, // 1e159 - {0x577B986B314D6009, 0xB616A12B7FE617AA}, // 1e160 - {0xED5A7E85FDA0B80B, 0xE39C49765FDF9D94}, // 1e161 - {0x14588F13BE847307, 0x8E41ADE9FBEBC27D}, // 1e162 - {0x596EB2D8AE258FC8, 0xB1D219647AE6B31C}, // 1e163 - {0x6FCA5F8ED9AEF3BB, 0xDE469FBD99A05FE3}, // 1e164 - {0x25DE7BB9480D5854, 0x8AEC23D680043BEE}, // 1e165 - {0xAF561AA79A10AE6A, 0xADA72CCC20054AE9}, // 1e166 - {0x1B2BA1518094DA04, 0xD910F7FF28069DA4}, // 1e167 - {0x90FB44D2F05D0842, 0x87AA9AFF79042286}, // 1e168 - {0x353A1607AC744A53, 0xA99541BF57452B28}, // 1e169 - {0x42889B8997915CE8, 0xD3FA922F2D1675F2}, // 1e170 - {0x69956135FEBADA11, 0x847C9B5D7C2E09B7}, // 1e171 - {0x43FAB9837E699095, 0xA59BC234DB398C25}, // 1e172 - {0x94F967E45E03F4BB, 0xCF02B2C21207EF2E}, // 1e173 - {0x1D1BE0EEBAC278F5, 0x8161AFB94B44F57D}, // 1e174 - {0x6462D92A69731732, 0xA1BA1BA79E1632DC}, // 1e175 - {0x7D7B8F7503CFDCFE, 0xCA28A291859BBF93}, // 1e176 - {0x5CDA735244C3D43E, 0xFCB2CB35E702AF78}, // 1e177 - {0x3A0888136AFA64A7, 0x9DEFBF01B061ADAB}, // 1e178 - {0x088AAA1845B8FDD0, 0xC56BAEC21C7A1916}, // 1e179 - {0x8AAD549E57273D45, 0xF6C69A72A3989F5B}, // 1e180 - {0x36AC54E2F678864B, 0x9A3C2087A63F6399}, // 1e181 - {0x84576A1BB416A7DD, 0xC0CB28A98FCF3C7F}, // 1e182 - {0x656D44A2A11C51D5, 0xF0FDF2D3F3C30B9F}, // 1e183 - {0x9F644AE5A4B1B325, 0x969EB7C47859E743}, // 1e184 - {0x873D5D9F0DDE1FEE, 0xBC4665B596706114}, // 1e185 - {0xA90CB506D155A7EA, 0xEB57FF22FC0C7959}, // 1e186 - {0x09A7F12442D588F2, 0x9316FF75DD87CBD8}, // 1e187 - {0x0C11ED6D538AEB2F, 0xB7DCBF5354E9BECE}, // 1e188 - {0x8F1668C8A86DA5FA, 0xE5D3EF282A242E81}, // 1e189 - {0xF96E017D694487BC, 0x8FA475791A569D10}, // 1e190 - {0x37C981DCC395A9AC, 0xB38D92D760EC4455}, // 1e191 - {0x85BBE253F47B1417, 0xE070F78D3927556A}, // 1e192 - {0x93956D7478CCEC8E, 0x8C469AB843B89562}, // 1e193 - {0x387AC8D1970027B2, 0xAF58416654A6BABB}, // 1e194 - {0x06997B05FCC0319E, 0xDB2E51BFE9D0696A}, // 1e195 - {0x441FECE3BDF81F03, 0x88FCF317F22241E2}, // 1e196 - {0xD527E81CAD7626C3, 0xAB3C2FDDEEAAD25A}, // 1e197 - {0x8A71E223D8D3B074, 0xD60B3BD56A5586F1}, // 1e198 - {0xF6872D5667844E49, 0x85C7056562757456}, // 1e199 - {0xB428F8AC016561DB, 0xA738C6BEBB12D16C}, // 1e200 - {0xE13336D701BEBA52, 0xD106F86E69D785C7}, // 1e201 - {0xECC0024661173473, 0x82A45B450226B39C}, // 1e202 - {0x27F002D7F95D0190, 0xA34D721642B06084}, // 1e203 - {0x31EC038DF7B441F4, 0xCC20CE9BD35C78A5}, // 1e204 - {0x7E67047175A15271, 0xFF290242C83396CE}, // 1e205 - {0x0F0062C6E984D386, 0x9F79A169BD203E41}, // 1e206 - {0x52C07B78A3E60868, 0xC75809C42C684DD1}, // 1e207 - {0xA7709A56CCDF8A82, 0xF92E0C3537826145}, // 1e208 - {0x88A66076400BB691, 0x9BBCC7A142B17CCB}, // 1e209 - {0x6ACFF893D00EA435, 0xC2ABF989935DDBFE}, // 1e210 - {0x0583F6B8C4124D43, 0xF356F7EBF83552FE}, // 1e211 - {0xC3727A337A8B704A, 0x98165AF37B2153DE}, // 1e212 - {0x744F18C0592E4C5C, 0xBE1BF1B059E9A8D6}, // 1e213 - {0x1162DEF06F79DF73, 0xEDA2EE1C7064130C}, // 1e214 - {0x8ADDCB5645AC2BA8, 0x9485D4D1C63E8BE7}, // 1e215 - {0x6D953E2BD7173692, 0xB9A74A0637CE2EE1}, // 1e216 - {0xC8FA8DB6CCDD0437, 0xE8111C87C5C1BA99}, // 1e217 - {0x1D9C9892400A22A2, 0x910AB1D4DB9914A0}, // 1e218 - {0x2503BEB6D00CAB4B, 0xB54D5E4A127F59C8}, // 1e219 - {0x2E44AE64840FD61D, 0xE2A0B5DC971F303A}, // 1e220 - {0x5CEAECFED289E5D2, 0x8DA471A9DE737E24}, // 1e221 - {0x7425A83E872C5F47, 0xB10D8E1456105DAD}, // 1e222 - {0xD12F124E28F77719, 0xDD50F1996B947518}, // 1e223 - {0x82BD6B70D99AAA6F, 0x8A5296FFE33CC92F}, // 1e224 - {0x636CC64D1001550B, 0xACE73CBFDC0BFB7B}, // 1e225 - {0x3C47F7E05401AA4E, 0xD8210BEFD30EFA5A}, // 1e226 - {0x65ACFAEC34810A71, 0x8714A775E3E95C78}, // 1e227 - {0x7F1839A741A14D0D, 0xA8D9D1535CE3B396}, // 1e228 - {0x1EDE48111209A050, 0xD31045A8341CA07C}, // 1e229 - {0x934AED0AAB460432, 0x83EA2B892091E44D}, // 1e230 - {0xF81DA84D5617853F, 0xA4E4B66B68B65D60}, // 1e231 - {0x36251260AB9D668E, 0xCE1DE40642E3F4B9}, // 1e232 - {0xC1D72B7C6B426019, 0x80D2AE83E9CE78F3}, // 1e233 - {0xB24CF65B8612F81F, 0xA1075A24E4421730}, // 1e234 - {0xDEE033F26797B627, 0xC94930AE1D529CFC}, // 1e235 - {0x169840EF017DA3B1, 0xFB9B7CD9A4A7443C}, // 1e236 - {0x8E1F289560EE864E, 0x9D412E0806E88AA5}, // 1e237 - {0xF1A6F2BAB92A27E2, 0xC491798A08A2AD4E}, // 1e238 - {0xAE10AF696774B1DB, 0xF5B5D7EC8ACB58A2}, // 1e239 - {0xACCA6DA1E0A8EF29, 0x9991A6F3D6BF1765}, // 1e240 - {0x17FD090A58D32AF3, 0xBFF610B0CC6EDD3F}, // 1e241 - {0xDDFC4B4CEF07F5B0, 0xEFF394DCFF8A948E}, // 1e242 - {0x4ABDAF101564F98E, 0x95F83D0A1FB69CD9}, // 1e243 - {0x9D6D1AD41ABE37F1, 0xBB764C4CA7A4440F}, // 1e244 - {0x84C86189216DC5ED, 0xEA53DF5FD18D5513}, // 1e245 - {0x32FD3CF5B4E49BB4, 0x92746B9BE2F8552C}, // 1e246 - {0x3FBC8C33221DC2A1, 0xB7118682DBB66A77}, // 1e247 - {0x0FABAF3FEAA5334A, 0xE4D5E82392A40515}, // 1e248 - {0x29CB4D87F2A7400E, 0x8F05B1163BA6832D}, // 1e249 - {0x743E20E9EF511012, 0xB2C71D5BCA9023F8}, // 1e250 - {0x914DA9246B255416, 0xDF78E4B2BD342CF6}, // 1e251 - {0x1AD089B6C2F7548E, 0x8BAB8EEFB6409C1A}, // 1e252 - {0xA184AC2473B529B1, 0xAE9672ABA3D0C320}, // 1e253 - {0xC9E5D72D90A2741E, 0xDA3C0F568CC4F3E8}, // 1e254 - {0x7E2FA67C7A658892, 0x8865899617FB1871}, // 1e255 - {0xDDBB901B98FEEAB7, 0xAA7EEBFB9DF9DE8D}, // 1e256 - {0x552A74227F3EA565, 0xD51EA6FA85785631}, // 1e257 - {0xD53A88958F87275F, 0x8533285C936B35DE}, // 1e258 - {0x8A892ABAF368F137, 0xA67FF273B8460356}, // 1e259 - {0x2D2B7569B0432D85, 0xD01FEF10A657842C}, // 1e260 - {0x9C3B29620E29FC73, 0x8213F56A67F6B29B}, // 1e261 - {0x8349F3BA91B47B8F, 0xA298F2C501F45F42}, // 1e262 - {0x241C70A936219A73, 0xCB3F2F7642717713}, // 1e263 - {0xED238CD383AA0110, 0xFE0EFB53D30DD4D7}, // 1e264 - {0xF4363804324A40AA, 0x9EC95D1463E8A506}, // 1e265 - {0xB143C6053EDCD0D5, 0xC67BB4597CE2CE48}, // 1e266 - {0xDD94B7868E94050A, 0xF81AA16FDC1B81DA}, // 1e267 - {0xCA7CF2B4191C8326, 0x9B10A4E5E9913128}, // 1e268 - {0xFD1C2F611F63A3F0, 0xC1D4CE1F63F57D72}, // 1e269 - {0xBC633B39673C8CEC, 0xF24A01A73CF2DCCF}, // 1e270 - {0xD5BE0503E085D813, 0x976E41088617CA01}, // 1e271 - {0x4B2D8644D8A74E18, 0xBD49D14AA79DBC82}, // 1e272 - {0xDDF8E7D60ED1219E, 0xEC9C459D51852BA2}, // 1e273 - {0xCABB90E5C942B503, 0x93E1AB8252F33B45}, // 1e274 - {0x3D6A751F3B936243, 0xB8DA1662E7B00A17}, // 1e275 - {0x0CC512670A783AD4, 0xE7109BFBA19C0C9D}, // 1e276 - {0x27FB2B80668B24C5, 0x906A617D450187E2}, // 1e277 - {0xB1F9F660802DEDF6, 0xB484F9DC9641E9DA}, // 1e278 - {0x5E7873F8A0396973, 0xE1A63853BBD26451}, // 1e279 - {0xDB0B487B6423E1E8, 0x8D07E33455637EB2}, // 1e280 - {0x91CE1A9A3D2CDA62, 0xB049DC016ABC5E5F}, // 1e281 - {0x7641A140CC7810FB, 0xDC5C5301C56B75F7}, // 1e282 - {0xA9E904C87FCB0A9D, 0x89B9B3E11B6329BA}, // 1e283 - {0x546345FA9FBDCD44, 0xAC2820D9623BF429}, // 1e284 - {0xA97C177947AD4095, 0xD732290FBACAF133}, // 1e285 - {0x49ED8EABCCCC485D, 0x867F59A9D4BED6C0}, // 1e286 - {0x5C68F256BFFF5A74, 0xA81F301449EE8C70}, // 1e287 - {0x73832EEC6FFF3111, 0xD226FC195C6A2F8C}, // 1e288 -}; - -// wuffs_base__private_implementation__f64_powers_of_10 holds powers of 10 that -// can be exactly represented by a float64 (what C calls a double). -static const double wuffs_base__private_implementation__f64_powers_of_10[23] = { - 1e0, 1e1, 1e2, 1e3, 1e4, 1e5, 1e6, 1e7, 1e8, 1e9, 1e10, 1e11, - 1e12, 1e13, 1e14, 1e15, 1e16, 1e17, 1e18, 1e19, 1e20, 1e21, 1e22, -}; - -// ---------------- IEEE 754 Floating Point - -WUFFS_BASE__MAYBE_STATIC wuffs_base__lossy_value_u16 // -wuffs_base__ieee_754_bit_representation__from_f64_to_u16_truncate(double f) { - uint64_t u = 0; - if (sizeof(uint64_t) == sizeof(double)) { - memcpy(&u, &f, sizeof(uint64_t)); - } - uint16_t neg = ((uint16_t)((u >> 63) << 15)); - u &= 0x7FFFFFFFFFFFFFFF; - uint64_t exp = u >> 52; - uint64_t man = u & 0x000FFFFFFFFFFFFF; - - if (exp == 0x7FF) { - if (man == 0) { // Infinity. - wuffs_base__lossy_value_u16 ret; - ret.value = neg | 0x7C00; - ret.lossy = false; - return ret; - } - // NaN. Shift the 52 mantissa bits to 10 mantissa bits, keeping the most - // significant mantissa bit (quiet vs signaling NaNs). Also set the low 9 - // bits of ret.value so that the 10-bit mantissa is non-zero. - wuffs_base__lossy_value_u16 ret; - ret.value = neg | 0x7DFF | ((uint16_t)(man >> 42)); - ret.lossy = false; - return ret; - - } else if (exp > 0x40E) { // Truncate to the largest finite f16. - wuffs_base__lossy_value_u16 ret; - ret.value = neg | 0x7BFF; - ret.lossy = true; - return ret; - - } else if (exp <= 0x3E6) { // Truncate to zero. - wuffs_base__lossy_value_u16 ret; - ret.value = neg; - ret.lossy = (u != 0); - return ret; - - } else if (exp <= 0x3F0) { // Normal f64, subnormal f16. - // Convert from a 53-bit mantissa (after realizing the implicit bit) to a - // 10-bit mantissa and then adjust for the exponent. - man |= 0x0010000000000000; - uint32_t shift = ((uint32_t)(1051 - exp)); // 1051 = 0x3F0 + 53 - 10. - uint64_t shifted_man = man >> shift; - wuffs_base__lossy_value_u16 ret; - ret.value = neg | ((uint16_t)shifted_man); - ret.lossy = (shifted_man << shift) != man; - return ret; - } - - // Normal f64, normal f16. - - // Re-bias from 1023 to 15 and shift above f16's 10 mantissa bits. - exp = (exp - 1008) << 10; // 1008 = 1023 - 15 = 0x3FF - 0xF. - - // Convert from a 52-bit mantissa (excluding the implicit bit) to a 10-bit - // mantissa (again excluding the implicit bit). We lose some information if - // any of the bottom 42 bits are non-zero. - wuffs_base__lossy_value_u16 ret; - ret.value = neg | ((uint16_t)exp) | ((uint16_t)(man >> 42)); - ret.lossy = (man << 22) != 0; - return ret; -} - -WUFFS_BASE__MAYBE_STATIC wuffs_base__lossy_value_u32 // -wuffs_base__ieee_754_bit_representation__from_f64_to_u32_truncate(double f) { - uint64_t u = 0; - if (sizeof(uint64_t) == sizeof(double)) { - memcpy(&u, &f, sizeof(uint64_t)); - } - uint32_t neg = ((uint32_t)(u >> 63)) << 31; - u &= 0x7FFFFFFFFFFFFFFF; - uint64_t exp = u >> 52; - uint64_t man = u & 0x000FFFFFFFFFFFFF; - - if (exp == 0x7FF) { - if (man == 0) { // Infinity. - wuffs_base__lossy_value_u32 ret; - ret.value = neg | 0x7F800000; - ret.lossy = false; - return ret; - } - // NaN. Shift the 52 mantissa bits to 23 mantissa bits, keeping the most - // significant mantissa bit (quiet vs signaling NaNs). Also set the low 22 - // bits of ret.value so that the 23-bit mantissa is non-zero. - wuffs_base__lossy_value_u32 ret; - ret.value = neg | 0x7FBFFFFF | ((uint32_t)(man >> 29)); - ret.lossy = false; - return ret; - - } else if (exp > 0x47E) { // Truncate to the largest finite f32. - wuffs_base__lossy_value_u32 ret; - ret.value = neg | 0x7F7FFFFF; - ret.lossy = true; - return ret; - - } else if (exp <= 0x369) { // Truncate to zero. - wuffs_base__lossy_value_u32 ret; - ret.value = neg; - ret.lossy = (u != 0); - return ret; - - } else if (exp <= 0x380) { // Normal f64, subnormal f32. - // Convert from a 53-bit mantissa (after realizing the implicit bit) to a - // 23-bit mantissa and then adjust for the exponent. - man |= 0x0010000000000000; - uint32_t shift = ((uint32_t)(926 - exp)); // 926 = 0x380 + 53 - 23. - uint64_t shifted_man = man >> shift; - wuffs_base__lossy_value_u32 ret; - ret.value = neg | ((uint32_t)shifted_man); - ret.lossy = (shifted_man << shift) != man; - return ret; - } - - // Normal f64, normal f32. - - // Re-bias from 1023 to 127 and shift above f32's 23 mantissa bits. - exp = (exp - 896) << 23; // 896 = 1023 - 127 = 0x3FF - 0x7F. - - // Convert from a 52-bit mantissa (excluding the implicit bit) to a 23-bit - // mantissa (again excluding the implicit bit). We lose some information if - // any of the bottom 29 bits are non-zero. - wuffs_base__lossy_value_u32 ret; - ret.value = neg | ((uint32_t)exp) | ((uint32_t)(man >> 29)); - ret.lossy = (man << 35) != 0; - return ret; -} - -// -------- - -#define WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE 2047 -#define WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION 800 - -// WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL is the largest N -// such that ((10 << N) < (1 << 64)). -#define WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL 60 - -// wuffs_base__private_implementation__high_prec_dec (abbreviated as HPD) is a -// fixed precision floating point decimal number, augmented with ±infinity -// values, but it cannot represent NaN (Not a Number). -// -// "High precision" means that the mantissa holds 800 decimal digits. 800 is -// WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION. -// -// An HPD isn't for general purpose arithmetic, only for conversions to and -// from IEEE 754 double-precision floating point, where the largest and -// smallest positive, finite values are approximately 1.8e+308 and 4.9e-324. -// HPD exponents above +2047 mean infinity, below -2047 mean zero. The ±2047 -// bounds are further away from zero than ±(324 + 800), where 800 and 2047 is -// WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION and -// WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE. -// -// digits[.. num_digits] are the number's digits in big-endian order. The -// uint8_t values are in the range [0 ..= 9], not ['0' ..= '9'], where e.g. '7' -// is the ASCII value 0x37. -// -// decimal_point is the index (within digits) of the decimal point. It may be -// negative or be larger than num_digits, in which case the explicit digits are -// padded with implicit zeroes. -// -// For example, if num_digits is 3 and digits is "\x07\x08\x09": -// - A decimal_point of -2 means ".00789" -// - A decimal_point of -1 means ".0789" -// - A decimal_point of +0 means ".789" -// - A decimal_point of +1 means "7.89" -// - A decimal_point of +2 means "78.9" -// - A decimal_point of +3 means "789." -// - A decimal_point of +4 means "7890." -// - A decimal_point of +5 means "78900." -// -// As above, a decimal_point higher than +2047 means that the overall value is -// infinity, lower than -2047 means zero. -// -// negative is a sign bit. An HPD can distinguish positive and negative zero. -// -// truncated is whether there are more than -// WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION digits, and at -// least one of those extra digits are non-zero. The existence of long-tail -// digits can affect rounding. -// -// The "all fields are zero" value is valid, and represents the number +0. -typedef struct wuffs_base__private_implementation__high_prec_dec__struct { - uint32_t num_digits; - int32_t decimal_point; - bool negative; - bool truncated; - uint8_t digits[WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION]; -} wuffs_base__private_implementation__high_prec_dec; - -// wuffs_base__private_implementation__high_prec_dec__trim trims trailing -// zeroes from the h->digits[.. h->num_digits] slice. They have no benefit, -// since we explicitly track h->decimal_point. -// -// Preconditions: -// - h is non-NULL. -static inline void // -wuffs_base__private_implementation__high_prec_dec__trim( - wuffs_base__private_implementation__high_prec_dec* h) { - while ((h->num_digits > 0) && (h->digits[h->num_digits - 1] == 0)) { - h->num_digits--; - } -} - -// wuffs_base__private_implementation__high_prec_dec__assign sets h to -// represent the number x. -// -// Preconditions: -// - h is non-NULL. -static void // -wuffs_base__private_implementation__high_prec_dec__assign( - wuffs_base__private_implementation__high_prec_dec* h, - uint64_t x, - bool negative) { - uint32_t n = 0; - - // Set h->digits. - if (x > 0) { - // Calculate the digits, working right-to-left. After we determine n (how - // many digits there are), copy from buf to h->digits. - // - // UINT64_MAX, 18446744073709551615, is 20 digits long. It can be faster to - // copy a constant number of bytes than a variable number (20 instead of - // n). Make buf large enough (and start writing to it from the middle) so - // that can we always copy 20 bytes: the slice buf[(20-n) .. (40-n)]. - uint8_t buf[40] = {0}; - uint8_t* ptr = &buf[20]; - do { - uint64_t remaining = x / 10; - x -= remaining * 10; - ptr--; - *ptr = (uint8_t)x; - n++; - x = remaining; - } while (x > 0); - memcpy(h->digits, ptr, 20); - } - - // Set h's other fields. - h->num_digits = n; - h->decimal_point = (int32_t)n; - h->negative = negative; - h->truncated = false; - wuffs_base__private_implementation__high_prec_dec__trim(h); -} - -static wuffs_base__status // -wuffs_base__private_implementation__high_prec_dec__parse( - wuffs_base__private_implementation__high_prec_dec* h, - wuffs_base__slice_u8 s, - uint32_t options) { - if (!h) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - h->num_digits = 0; - h->decimal_point = 0; - h->negative = false; - h->truncated = false; - - uint8_t* p = s.ptr; - uint8_t* q = s.ptr + s.len; - - if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) { - for (;; p++) { - if (p >= q) { - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } else if (*p != '_') { - break; - } - } - } - - // Parse sign. - do { - if (*p == '+') { - p++; - } else if (*p == '-') { - h->negative = true; - p++; - } else { - break; - } - if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) { - for (;; p++) { - if (p >= q) { - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } else if (*p != '_') { - break; - } - } - } - } while (0); - - // Parse digits, up to (and including) a '.', 'E' or 'e'. Examples for each - // limb in this if-else chain: - // - "0.789" - // - "1002.789" - // - ".789" - // - Other (invalid input). - uint32_t nd = 0; - int32_t dp = 0; - bool no_digits_before_separator = false; - if (('0' == *p) && - !(options & - WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_MULTIPLE_LEADING_ZEROES)) { - p++; - for (;; p++) { - if (p >= q) { - goto after_all; - } else if (*p == - ((options & - WUFFS_BASE__PARSE_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA) - ? ',' - : '.')) { - p++; - goto after_sep; - } else if ((*p == 'E') || (*p == 'e')) { - p++; - goto after_exp; - } else if ((*p != '_') || - !(options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES)) { - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - } - - } else if (('0' <= *p) && (*p <= '9')) { - if (*p == '0') { - for (; (p < q) && (*p == '0'); p++) { - } - } else { - h->digits[nd++] = (uint8_t)(*p - '0'); - dp = (int32_t)nd; - p++; - } - - for (;; p++) { - if (p >= q) { - goto after_all; - } else if (('0' <= *p) && (*p <= '9')) { - if (nd < WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION) { - h->digits[nd++] = (uint8_t)(*p - '0'); - dp = (int32_t)nd; - } else if ('0' != *p) { - // Long-tail non-zeroes set the truncated bit. - h->truncated = true; - } - } else if (*p == - ((options & - WUFFS_BASE__PARSE_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA) - ? ',' - : '.')) { - p++; - goto after_sep; - } else if ((*p == 'E') || (*p == 'e')) { - p++; - goto after_exp; - } else if ((*p != '_') || - !(options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES)) { - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - } - - } else if (*p == ((options & - WUFFS_BASE__PARSE_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA) - ? ',' - : '.')) { - p++; - no_digits_before_separator = true; - - } else { - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - -after_sep: - for (;; p++) { - if (p >= q) { - goto after_all; - } else if ('0' == *p) { - if (nd == 0) { - // Track leading zeroes implicitly. - dp--; - } else if (nd < - WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION) { - h->digits[nd++] = (uint8_t)(*p - '0'); - } - } else if (('0' < *p) && (*p <= '9')) { - if (nd < WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION) { - h->digits[nd++] = (uint8_t)(*p - '0'); - } else { - // Long-tail non-zeroes set the truncated bit. - h->truncated = true; - } - } else if ((*p == 'E') || (*p == 'e')) { - p++; - goto after_exp; - } else if ((*p != '_') || - !(options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES)) { - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - } - -after_exp: - do { - if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) { - for (;; p++) { - if (p >= q) { - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } else if (*p != '_') { - break; - } - } - } - - int32_t exp_sign = +1; - if (*p == '+') { - p++; - } else if (*p == '-') { - exp_sign = -1; - p++; - } - - int32_t exp = 0; - const int32_t exp_large = - WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE + - WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION; - bool saw_exp_digits = false; - for (; p < q; p++) { - if ((*p == '_') && - (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES)) { - // No-op. - } else if (('0' <= *p) && (*p <= '9')) { - saw_exp_digits = true; - if (exp < exp_large) { - exp = (10 * exp) + ((int32_t)(*p - '0')); - } - } else { - break; - } - } - if (!saw_exp_digits) { - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - dp += exp_sign * exp; - } while (0); - -after_all: - if (p != q) { - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - h->num_digits = nd; - if (nd == 0) { - if (no_digits_before_separator) { - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - h->decimal_point = 0; - } else if (dp < - -WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE) { - h->decimal_point = - -WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE - 1; - } else if (dp > - +WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE) { - h->decimal_point = - +WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE + 1; - } else { - h->decimal_point = dp; - } - wuffs_base__private_implementation__high_prec_dec__trim(h); - return wuffs_base__make_status(NULL); -} - -// -------- - -// wuffs_base__private_implementation__high_prec_dec__lshift_num_new_digits -// returns the number of additional decimal digits when left-shifting by shift. -// -// See below for preconditions. -static uint32_t // -wuffs_base__private_implementation__high_prec_dec__lshift_num_new_digits( - wuffs_base__private_implementation__high_prec_dec* h, - uint32_t shift) { - // Masking with 0x3F should be unnecessary (assuming the preconditions) but - // it's cheap and ensures that we don't overflow the - // wuffs_base__private_implementation__hpd_left_shift array. - shift &= 63; - - uint32_t x_a = wuffs_base__private_implementation__hpd_left_shift[shift]; - uint32_t x_b = wuffs_base__private_implementation__hpd_left_shift[shift + 1]; - uint32_t num_new_digits = x_a >> 11; - uint32_t pow5_a = 0x7FF & x_a; - uint32_t pow5_b = 0x7FF & x_b; - - const uint8_t* pow5 = - &wuffs_base__private_implementation__powers_of_5[pow5_a]; - uint32_t i = 0; - uint32_t n = pow5_b - pow5_a; - for (; i < n; i++) { - if (i >= h->num_digits) { - return num_new_digits - 1; - } else if (h->digits[i] == pow5[i]) { - continue; - } else if (h->digits[i] < pow5[i]) { - return num_new_digits - 1; - } else { - return num_new_digits; - } - } - return num_new_digits; -} - -// -------- - -// wuffs_base__private_implementation__high_prec_dec__rounded_integer returns -// the integral (non-fractional) part of h, provided that it is 18 or fewer -// decimal digits. For 19 or more digits, it returns UINT64_MAX. Note that: -// - (1 << 53) is 9007199254740992, which has 16 decimal digits. -// - (1 << 56) is 72057594037927936, which has 17 decimal digits. -// - (1 << 59) is 576460752303423488, which has 18 decimal digits. -// - (1 << 63) is 9223372036854775808, which has 19 decimal digits. -// and that IEEE 754 double precision has 52 mantissa bits. -// -// That integral part is rounded-to-even: rounding 7.5 or 8.5 both give 8. -// -// h's negative bit is ignored: rounding -8.6 returns 9. -// -// See below for preconditions. -static uint64_t // -wuffs_base__private_implementation__high_prec_dec__rounded_integer( - wuffs_base__private_implementation__high_prec_dec* h) { - if ((h->num_digits == 0) || (h->decimal_point < 0)) { - return 0; - } else if (h->decimal_point > 18) { - return UINT64_MAX; - } - - uint32_t dp = (uint32_t)(h->decimal_point); - uint64_t n = 0; - uint32_t i = 0; - for (; i < dp; i++) { - n = (10 * n) + ((i < h->num_digits) ? h->digits[i] : 0); - } - - bool round_up = false; - if (dp < h->num_digits) { - round_up = h->digits[dp] >= 5; - if ((h->digits[dp] == 5) && (dp + 1 == h->num_digits)) { - // We are exactly halfway. If we're truncated, round up, otherwise round - // to even. - round_up = h->truncated || // - ((dp > 0) && (1 & h->digits[dp - 1])); - } - } - if (round_up) { - n++; - } - - return n; -} - -// wuffs_base__private_implementation__high_prec_dec__small_xshift shifts h's -// number (where 'x' is 'l' or 'r' for left or right) by a small shift value. -// -// Preconditions: -// - h is non-NULL. -// - h->decimal_point is "not extreme". -// - shift is non-zero. -// - shift is "a small shift". -// -// "Not extreme" means within -// ±WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE. -// -// "A small shift" means not more than -// WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL. -// -// wuffs_base__private_implementation__high_prec_dec__rounded_integer and -// wuffs_base__private_implementation__high_prec_dec__lshift_num_new_digits -// have the same preconditions. -// -// wuffs_base__private_implementation__high_prec_dec__lshift keeps the first -// two preconditions but not the last two. Its shift argument is signed and -// does not need to be "small": zero is a no-op, positive means left shift and -// negative means right shift. - -static void // -wuffs_base__private_implementation__high_prec_dec__small_lshift( - wuffs_base__private_implementation__high_prec_dec* h, - uint32_t shift) { - if (h->num_digits == 0) { - return; - } - uint32_t num_new_digits = - wuffs_base__private_implementation__high_prec_dec__lshift_num_new_digits( - h, shift); - uint32_t rx = h->num_digits - 1; // Read index. - uint32_t wx = h->num_digits - 1 + num_new_digits; // Write index. - uint64_t n = 0; - - // Repeat: pick up a digit, put down a digit, right to left. - while (((int32_t)rx) >= 0) { - n += ((uint64_t)(h->digits[rx])) << shift; - uint64_t quo = n / 10; - uint64_t rem = n - (10 * quo); - if (wx < WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION) { - h->digits[wx] = (uint8_t)rem; - } else if (rem > 0) { - h->truncated = true; - } - n = quo; - wx--; - rx--; - } - - // Put down leading digits, right to left. - while (n > 0) { - uint64_t quo = n / 10; - uint64_t rem = n - (10 * quo); - if (wx < WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION) { - h->digits[wx] = (uint8_t)rem; - } else if (rem > 0) { - h->truncated = true; - } - n = quo; - wx--; - } - - // Finish. - h->num_digits += num_new_digits; - if (h->num_digits > - WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION) { - h->num_digits = WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION; - } - h->decimal_point += (int32_t)num_new_digits; - wuffs_base__private_implementation__high_prec_dec__trim(h); -} - -static void // -wuffs_base__private_implementation__high_prec_dec__small_rshift( - wuffs_base__private_implementation__high_prec_dec* h, - uint32_t shift) { - uint32_t rx = 0; // Read index. - uint32_t wx = 0; // Write index. - uint64_t n = 0; - - // Pick up enough leading digits to cover the first shift. - while ((n >> shift) == 0) { - if (rx < h->num_digits) { - // Read a digit. - n = (10 * n) + h->digits[rx++]; - } else if (n == 0) { - // h's number used to be zero and remains zero. - return; - } else { - // Read sufficient implicit trailing zeroes. - while ((n >> shift) == 0) { - n = 10 * n; - rx++; - } - break; - } - } - h->decimal_point -= ((int32_t)(rx - 1)); - if (h->decimal_point < - -WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE) { - // After the shift, h's number is effectively zero. - h->num_digits = 0; - h->decimal_point = 0; - h->truncated = false; - return; - } - - // Repeat: pick up a digit, put down a digit, left to right. - uint64_t mask = (((uint64_t)(1)) << shift) - 1; - while (rx < h->num_digits) { - uint8_t new_digit = ((uint8_t)(n >> shift)); - n = (10 * (n & mask)) + h->digits[rx++]; - h->digits[wx++] = new_digit; - } - - // Put down trailing digits, left to right. - while (n > 0) { - uint8_t new_digit = ((uint8_t)(n >> shift)); - n = 10 * (n & mask); - if (wx < WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DIGITS_PRECISION) { - h->digits[wx++] = new_digit; - } else if (new_digit > 0) { - h->truncated = true; - } - } - - // Finish. - h->num_digits = wx; - wuffs_base__private_implementation__high_prec_dec__trim(h); -} - -static void // -wuffs_base__private_implementation__high_prec_dec__lshift( - wuffs_base__private_implementation__high_prec_dec* h, - int32_t shift) { - if (shift > 0) { - while (shift > +WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL) { - wuffs_base__private_implementation__high_prec_dec__small_lshift( - h, WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL); - shift -= WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL; - } - wuffs_base__private_implementation__high_prec_dec__small_lshift( - h, ((uint32_t)(+shift))); - } else if (shift < 0) { - while (shift < -WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL) { - wuffs_base__private_implementation__high_prec_dec__small_rshift( - h, WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL); - shift += WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL; - } - wuffs_base__private_implementation__high_prec_dec__small_rshift( - h, ((uint32_t)(-shift))); - } -} - -// -------- - -// wuffs_base__private_implementation__high_prec_dec__round_etc rounds h's -// number. For those functions that take an n argument, rounding produces at -// most n digits (which is not necessarily at most n decimal places). Negative -// n values are ignored, as well as any n greater than or equal to h's number -// of digits. The etc__round_just_enough function implicitly chooses an n to -// implement WUFFS_BASE__RENDER_NUMBER_FXX__JUST_ENOUGH_PRECISION. -// -// Preconditions: -// - h is non-NULL. -// - h->decimal_point is "not extreme". -// -// "Not extreme" means within -// ±WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE. - -static void // -wuffs_base__private_implementation__high_prec_dec__round_down( - wuffs_base__private_implementation__high_prec_dec* h, - int32_t n) { - if ((n < 0) || (h->num_digits <= (uint32_t)n)) { - return; - } - h->num_digits = (uint32_t)(n); - wuffs_base__private_implementation__high_prec_dec__trim(h); -} - -static void // -wuffs_base__private_implementation__high_prec_dec__round_up( - wuffs_base__private_implementation__high_prec_dec* h, - int32_t n) { - if ((n < 0) || (h->num_digits <= (uint32_t)n)) { - return; - } - - for (n--; n >= 0; n--) { - if (h->digits[n] < 9) { - h->digits[n]++; - h->num_digits = (uint32_t)(n + 1); - return; - } - } - - // The number is all 9s. Change to a single 1 and adjust the decimal point. - h->digits[0] = 1; - h->num_digits = 1; - h->decimal_point++; -} - -static void // -wuffs_base__private_implementation__high_prec_dec__round_nearest( - wuffs_base__private_implementation__high_prec_dec* h, - int32_t n) { - if ((n < 0) || (h->num_digits <= (uint32_t)n)) { - return; - } - bool up = h->digits[n] >= 5; - if ((h->digits[n] == 5) && ((n + 1) == ((int32_t)(h->num_digits)))) { - up = h->truncated || // - ((n > 0) && ((h->digits[n - 1] & 1) != 0)); - } - - if (up) { - wuffs_base__private_implementation__high_prec_dec__round_up(h, n); - } else { - wuffs_base__private_implementation__high_prec_dec__round_down(h, n); - } -} - -static void // -wuffs_base__private_implementation__high_prec_dec__round_just_enough( - wuffs_base__private_implementation__high_prec_dec* h, - int32_t exp2, - uint64_t mantissa) { - // The magic numbers 52 and 53 in this function are because IEEE 754 double - // precision has 52 mantissa bits. - // - // Let f be the floating point number represented by exp2 and mantissa (and - // also the number in h): the number (mantissa * (2 ** (exp2 - 52))). - // - // If f is zero or a small integer, we can return early. - if ((mantissa == 0) || - ((exp2 < 53) && (h->decimal_point >= ((int32_t)(h->num_digits))))) { - return; - } - - // The smallest normal f has an exp2 of -1022 and a mantissa of (1 << 52). - // Subnormal numbers have the same exp2 but a smaller mantissa. - static const int32_t min_incl_normal_exp2 = -1022; - static const uint64_t min_incl_normal_mantissa = 0x0010000000000000ul; - - // Compute lower and upper bounds such that any number between them (possibly - // inclusive) will round to f. First, the lower bound. Our number f is: - // ((mantissa + 0) * (2 ** ( exp2 - 52))) - // - // The next lowest floating point number is: - // ((mantissa - 1) * (2 ** ( exp2 - 52))) - // unless (mantissa - 1) drops the (1 << 52) bit and exp2 is not the - // min_incl_normal_exp2. Either way, call it: - // ((l_mantissa) * (2 ** (l_exp2 - 52))) - // - // The lower bound is halfway between them (noting that 52 became 53): - // (((2 * l_mantissa) + 1) * (2 ** (l_exp2 - 53))) - int32_t l_exp2 = exp2; - uint64_t l_mantissa = mantissa - 1; - if ((exp2 > min_incl_normal_exp2) && (mantissa <= min_incl_normal_mantissa)) { - l_exp2 = exp2 - 1; - l_mantissa = (2 * mantissa) - 1; - } - wuffs_base__private_implementation__high_prec_dec lower; - wuffs_base__private_implementation__high_prec_dec__assign( - &lower, (2 * l_mantissa) + 1, false); - wuffs_base__private_implementation__high_prec_dec__lshift(&lower, - l_exp2 - 53); - - // Next, the upper bound. Our number f is: - // ((mantissa + 0) * (2 ** (exp2 - 52))) - // - // The next highest floating point number is: - // ((mantissa + 1) * (2 ** (exp2 - 52))) - // - // The upper bound is halfway between them (noting that 52 became 53): - // (((2 * mantissa) + 1) * (2 ** (exp2 - 53))) - wuffs_base__private_implementation__high_prec_dec upper; - wuffs_base__private_implementation__high_prec_dec__assign( - &upper, (2 * mantissa) + 1, false); - wuffs_base__private_implementation__high_prec_dec__lshift(&upper, exp2 - 53); - - // The lower and upper bounds are possible outputs only if the original - // mantissa is even, so that IEEE round-to-even would round to the original - // mantissa and not its neighbors. - bool inclusive = (mantissa & 1) == 0; - - // As we walk the digits, we want to know whether rounding up would fall - // within the upper bound. This is tracked by upper_delta: - // - When -1, the digits of h and upper are the same so far. - // - When +0, we saw a difference of 1 between h and upper on a previous - // digit and subsequently only 9s for h and 0s for upper. Thus, rounding - // up may fall outside of the bound if !inclusive. - // - When +1, the difference is greater than 1 and we know that rounding up - // falls within the bound. - // - // This is a state machine with three states. The numerical value for each - // state (-1, +0 or +1) isn't important, other than their order. - int upper_delta = -1; - - // We can now figure out the shortest number of digits required. Walk the - // digits until h has distinguished itself from lower or upper. - // - // The zi and zd variables are indexes and digits, for z in l (lower), h (the - // number) and u (upper). - // - // The lower, h and upper numbers may have their decimal points at different - // places. In this case, upper is the longest, so we iterate ui starting from - // 0 and iterate li and hi starting from either 0 or -1. - int32_t ui = 0; - for (;; ui++) { - // Calculate hd, the middle number's digit. - int32_t hi = ui - upper.decimal_point + h->decimal_point; - if (hi >= ((int32_t)(h->num_digits))) { - break; - } - uint8_t hd = (((uint32_t)hi) < h->num_digits) ? h->digits[hi] : 0; - - // Calculate ld, the lower bound's digit. - int32_t li = ui - upper.decimal_point + lower.decimal_point; - uint8_t ld = (((uint32_t)li) < lower.num_digits) ? lower.digits[li] : 0; - - // We can round down (truncate) if lower has a different digit than h or if - // lower is inclusive and is exactly the result of rounding down (i.e. we - // have reached the final digit of lower). - bool can_round_down = - (ld != hd) || // - (inclusive && ((li + 1) == ((int32_t)(lower.num_digits)))); - - // Calculate ud, the upper bound's digit, and update upper_delta. - uint8_t ud = (((uint32_t)ui) < upper.num_digits) ? upper.digits[ui] : 0; - if (upper_delta < 0) { - if ((hd + 1) < ud) { - // For example: - // h = 12345??? - // upper = 12347??? - upper_delta = +1; - } else if (hd != ud) { - // For example: - // h = 12345??? - // upper = 12346??? - upper_delta = +0; - } - } else if (upper_delta == 0) { - if ((hd != 9) || (ud != 0)) { - // For example: - // h = 1234598? - // upper = 1234600? - upper_delta = +1; - } - } - - // We can round up if upper has a different digit than h and either upper - // is inclusive or upper is bigger than the result of rounding up. - bool can_round_up = - (upper_delta > 0) || // - ((upper_delta == 0) && // - (inclusive || ((ui + 1) < ((int32_t)(upper.num_digits))))); - - // If we can round either way, round to nearest. If we can round only one - // way, do it. If we can't round, continue the loop. - if (can_round_down) { - if (can_round_up) { - wuffs_base__private_implementation__high_prec_dec__round_nearest( - h, hi + 1); - return; - } else { - wuffs_base__private_implementation__high_prec_dec__round_down(h, - hi + 1); - return; - } - } else { - if (can_round_up) { - wuffs_base__private_implementation__high_prec_dec__round_up(h, hi + 1); - return; - } - } - } -} - -// -------- - -// wuffs_base__private_implementation__parse_number_f64_eisel_lemire produces -// the IEEE 754 double-precision value for an exact mantissa and base-10 -// exponent. For example: -// - when parsing "12345.678e+02", man is 12345678 and exp10 is -1. -// - when parsing "-12", man is 12 and exp10 is 0. Processing the leading -// minus sign is the responsibility of the caller, not this function. -// -// On success, it returns a non-negative int64_t such that the low 63 bits hold -// the 11-bit exponent and 52-bit mantissa. -// -// On failure, it returns a negative value. -// -// The algorithm is based on an original idea by Michael Eisel that was refined -// by Daniel Lemire. See -// https://lemire.me/blog/2020/03/10/fast-float-parsing-in-practice/ -// and -// https://nigeltao.github.io/blog/2020/eisel-lemire.html -// -// Preconditions: -// - man is non-zero. -// - exp10 is in the range [-307 ..= 288], the same range of the -// wuffs_base__private_implementation__powers_of_10 array. -// -// The exp10 range (and the fact that man is in the range [1 ..= UINT64_MAX], -// approximately [1 ..= 1.85e+19]) means that (man * (10 ** exp10)) is in the -// range [1e-307 ..= 1.85e+307]. This is entirely within the range of normal -// (neither subnormal nor non-finite) f64 values: DBL_MIN and DBL_MAX are -// approximately 2.23e–308 and 1.80e+308. -static int64_t // -wuffs_base__private_implementation__parse_number_f64_eisel_lemire( - uint64_t man, - int32_t exp10) { - // Look up the (possibly truncated) base-2 representation of (10 ** exp10). - // The look-up table was constructed so that it is already normalized: the - // table entry's mantissa's MSB (most significant bit) is on. - const uint64_t* po10 = - &wuffs_base__private_implementation__powers_of_10[exp10 + 307][0]; - - // Normalize the man argument. The (man != 0) precondition means that a - // non-zero bit exists. - uint32_t clz = wuffs_base__count_leading_zeroes_u64(man); - man <<= clz; - - // Calculate the return value's base-2 exponent. We might tweak it by ±1 - // later, but its initial value comes from a linear scaling of exp10, - // converting from power-of-10 to power-of-2, and adjusting by clz. - // - // The magic constants are: - // - 1087 = 1023 + 64. The 1023 is the f64 exponent bias. The 64 is because - // the look-up table uses 64-bit mantissas. - // - 217706 is such that the ratio 217706 / 65536 ≈ 3.321930 is close enough - // (over the practical range of exp10) to log(10) / log(2) ≈ 3.321928. - // - 65536 = 1<<16 is arbitrary but a power of 2, so division is a shift. - // - // Equality of the linearly-scaled value and the actual power-of-2, over the - // range of exp10 arguments that this function accepts, is confirmed by - // script/print-mpb-powers-of-10.go - uint64_t ret_exp2 = - ((uint64_t)(((217706 * exp10) >> 16) + 1087)) - ((uint64_t)clz); - - // Multiply the two mantissas. Normalization means that both mantissas are at - // least (1<<63), so the 128-bit product must be at least (1<<126). The high - // 64 bits of the product, x_hi, must therefore be at least (1<<62). - // - // As a consequence, x_hi has either 0 or 1 leading zeroes. Shifting x_hi - // right by either 9 or 10 bits (depending on x_hi's MSB) will therefore - // leave the top 10 MSBs (bits 54 ..= 63) off and the 11th MSB (bit 53) on. - wuffs_base__multiply_u64__output x = wuffs_base__multiply_u64(man, po10[1]); - uint64_t x_hi = x.hi; - uint64_t x_lo = x.lo; - - // Before we shift right by at least 9 bits, recall that the look-up table - // entry was possibly truncated. We have so far only calculated a lower bound - // for the product (man * e), where e is (10 ** exp10). The upper bound would - // add a further (man * 1) to the 128-bit product, which overflows the lower - // 64-bit limb if ((x_lo + man) < man). - // - // If overflow occurs, that adds 1 to x_hi. Since we're about to shift right - // by at least 9 bits, that carried 1 can be ignored unless the higher 64-bit - // limb's low 9 bits are all on. - // - // For example, parsing "9999999999999999999" will take the if-true branch - // here, since: - // - x_hi = 0x4563918244F3FFFF - // - x_lo = 0x8000000000000000 - // - man = 0x8AC7230489E7FFFF - if (((x_hi & 0x1FF) == 0x1FF) && ((x_lo + man) < man)) { - // Refine our calculation of (man * e). Before, our approximation of e used - // a "low resolution" 64-bit mantissa. Now use a "high resolution" 128-bit - // mantissa. We've already calculated x = (man * bits_0_to_63_incl_of_e). - // Now calculate y = (man * bits_64_to_127_incl_of_e). - wuffs_base__multiply_u64__output y = wuffs_base__multiply_u64(man, po10[0]); - uint64_t y_hi = y.hi; - uint64_t y_lo = y.lo; - - // Merge the 128-bit x and 128-bit y, which overlap by 64 bits, to - // calculate the 192-bit product of the 64-bit man by the 128-bit e. - // As we exit this if-block, we only care about the high 128 bits - // (merged_hi and merged_lo) of that 192-bit product. - // - // For example, parsing "1.234e-45" will take the if-true branch here, - // since: - // - x_hi = 0x70B7E3696DB29FFF - // - x_lo = 0xE040000000000000 - // - y_hi = 0x33718BBEAB0E0D7A - // - y_lo = 0xA880000000000000 - uint64_t merged_hi = x_hi; - uint64_t merged_lo = x_lo + y_hi; - if (merged_lo < x_lo) { - merged_hi++; // Carry the overflow bit. - } - - // The "high resolution" approximation of e is still a lower bound. Once - // again, see if the upper bound is large enough to produce a different - // result. This time, if it does, give up instead of reaching for an even - // more precise approximation to e. - // - // This three-part check is similar to the two-part check that guarded the - // if block that we're now in, but it has an extra term for the middle 64 - // bits (checking that adding 1 to merged_lo would overflow). - // - // For example, parsing "5.9604644775390625e-8" will take the if-true - // branch here, since: - // - merged_hi = 0x7FFFFFFFFFFFFFFF - // - merged_lo = 0xFFFFFFFFFFFFFFFF - // - y_lo = 0x4DB3FFC120988200 - // - man = 0xD3C21BCECCEDA100 - if (((merged_hi & 0x1FF) == 0x1FF) && ((merged_lo + 1) == 0) && - (y_lo + man < man)) { - return -1; - } - - // Replace the 128-bit x with merged. - x_hi = merged_hi; - x_lo = merged_lo; - } - - // As mentioned above, shifting x_hi right by either 9 or 10 bits will leave - // the top 10 MSBs (bits 54 ..= 63) off and the 11th MSB (bit 53) on. If the - // MSB (before shifting) was on, adjust ret_exp2 for the larger shift. - // - // Having bit 53 on (and higher bits off) means that ret_mantissa is a 54-bit - // number. - uint64_t msb = x_hi >> 63; - uint64_t ret_mantissa = x_hi >> (msb + 9); - ret_exp2 -= 1 ^ msb; - - // IEEE 754 rounds to-nearest with ties rounded to-even. Rounding to-even can - // be tricky. If we're half-way between two exactly representable numbers - // (x's low 73 bits are zero and the next 2 bits that matter are "01"), give - // up instead of trying to pick the winner. - // - // Technically, we could tighten the condition by changing "73" to "73 or 74, - // depending on msb", but a flat "73" is simpler. - // - // For example, parsing "1e+23" will take the if-true branch here, since: - // - x_hi = 0x54B40B1F852BDA00 - // - ret_mantissa = 0x002A5A058FC295ED - if ((x_lo == 0) && ((x_hi & 0x1FF) == 0) && ((ret_mantissa & 3) == 1)) { - return -1; - } - - // If we're not halfway then it's rounding to-nearest. Starting with a 54-bit - // number, carry the lowest bit (bit 0) up if it's on. Regardless of whether - // it was on or off, shifting right by one then produces a 53-bit number. If - // carrying up overflowed, shift again. - ret_mantissa += ret_mantissa & 1; - ret_mantissa >>= 1; - // This if block is equivalent to (but benchmarks slightly faster than) the - // following branchless form: - // uint64_t overflow_adjustment = ret_mantissa >> 53; - // ret_mantissa >>= overflow_adjustment; - // ret_exp2 += overflow_adjustment; - // - // For example, parsing "7.2057594037927933e+16" will take the if-true - // branch here, since: - // - x_hi = 0x7FFFFFFFFFFFFE80 - // - ret_mantissa = 0x0020000000000000 - if ((ret_mantissa >> 53) > 0) { - ret_mantissa >>= 1; - ret_exp2++; - } - - // Starting with a 53-bit number, IEEE 754 double-precision normal numbers - // have an implicit mantissa bit. Mask that away and keep the low 52 bits. - ret_mantissa &= 0x000FFFFFFFFFFFFF; - - // Pack the bits and return. - return ((int64_t)(ret_mantissa | (ret_exp2 << 52))); -} - -// -------- - -static wuffs_base__result_f64 // -wuffs_base__private_implementation__parse_number_f64_special( - wuffs_base__slice_u8 s, - uint32_t options) { - do { - if (options & WUFFS_BASE__PARSE_NUMBER_FXX__REJECT_INF_AND_NAN) { - goto fail; - } - - uint8_t* p = s.ptr; - uint8_t* q = s.ptr + s.len; - - for (; (p < q) && (*p == '_'); p++) { - } - if (p >= q) { - goto fail; - } - - // Parse sign. - bool negative = false; - do { - if (*p == '+') { - p++; - } else if (*p == '-') { - negative = true; - p++; - } else { - break; - } - for (; (p < q) && (*p == '_'); p++) { - } - } while (0); - if (p >= q) { - goto fail; - } - - bool nan = false; - switch (p[0]) { - case 'I': - case 'i': - if (((q - p) < 3) || // - ((p[1] != 'N') && (p[1] != 'n')) || // - ((p[2] != 'F') && (p[2] != 'f'))) { - goto fail; - } - p += 3; - - if ((p >= q) || (*p == '_')) { - break; - } else if (((q - p) < 5) || // - ((p[0] != 'I') && (p[0] != 'i')) || // - ((p[1] != 'N') && (p[1] != 'n')) || // - ((p[2] != 'I') && (p[2] != 'i')) || // - ((p[3] != 'T') && (p[3] != 't')) || // - ((p[4] != 'Y') && (p[4] != 'y'))) { - goto fail; - } - p += 5; - - if ((p >= q) || (*p == '_')) { - break; - } - goto fail; - - case 'N': - case 'n': - if (((q - p) < 3) || // - ((p[1] != 'A') && (p[1] != 'a')) || // - ((p[2] != 'N') && (p[2] != 'n'))) { - goto fail; - } - p += 3; - - if ((p >= q) || (*p == '_')) { - nan = true; - break; - } - goto fail; - - default: - goto fail; - } - - // Finish. - for (; (p < q) && (*p == '_'); p++) { - } - if (p != q) { - goto fail; - } - wuffs_base__result_f64 ret; - ret.status.repr = NULL; - ret.value = wuffs_base__ieee_754_bit_representation__from_u64_to_f64( - (nan ? 0x7FFFFFFFFFFFFFFF : 0x7FF0000000000000) | - (negative ? 0x8000000000000000 : 0)); - return ret; - } while (0); - -fail: - do { - wuffs_base__result_f64 ret; - ret.status.repr = wuffs_base__error__bad_argument; - ret.value = 0; - return ret; - } while (0); -} - -WUFFS_BASE__MAYBE_STATIC wuffs_base__result_f64 // -wuffs_base__private_implementation__high_prec_dec__to_f64( - wuffs_base__private_implementation__high_prec_dec* h, - uint32_t options) { - do { - // powers converts decimal powers of 10 to binary powers of 2. For example, - // (10000 >> 13) is 1. It stops before the elements exceed 60, also known - // as WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL. - // - // This rounds down (1<<13 is a lower bound for 1e4). Adding 1 to the array - // element value rounds up (1<<14 is an upper bound for 1e4) while staying - // at or below WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL. - // - // When starting in the range [1e+1 .. 1e+2] (i.e. h->decimal_point == +2), - // powers[2] == 6 and so: - // - Right shifting by 6+0 produces the range [10/64 .. 100/64] = - // [0.156250 .. 1.56250]. The resultant h->decimal_point is +0 or +1. - // - Right shifting by 6+1 produces the range [10/128 .. 100/128] = - // [0.078125 .. 0.78125]. The resultant h->decimal_point is -1 or -0. - // - // When starting in the range [1e-3 .. 1e-2] (i.e. h->decimal_point == -2), - // powers[2] == 6 and so: - // - Left shifting by 6+0 produces the range [0.001*64 .. 0.01*64] = - // [0.064 .. 0.64]. The resultant h->decimal_point is -1 or -0. - // - Left shifting by 6+1 produces the range [0.001*128 .. 0.01*128] = - // [0.128 .. 1.28]. The resultant h->decimal_point is +0 or +1. - // - // Thus, when targeting h->decimal_point being +0 or +1, use (powers[n]+0) - // when right shifting but (powers[n]+1) when left shifting. - static const uint32_t num_powers = 19; - static const uint8_t powers[19] = { - 0, 3, 6, 9, 13, 16, 19, 23, 26, 29, // - 33, 36, 39, 43, 46, 49, 53, 56, 59, // - }; - - // Handle zero and obvious extremes. The largest and smallest positive - // finite f64 values are approximately 1.8e+308 and 4.9e-324. - if ((h->num_digits == 0) || (h->decimal_point < -326)) { - goto zero; - } else if (h->decimal_point > 310) { - goto infinity; - } - - // Try the fast Eisel-Lemire algorithm again. Calculating the (man, exp10) - // pair from the high_prec_dec h is more correct but slower than the - // approach taken in wuffs_base__parse_number_f64. The latter is optimized - // for the common cases (e.g. assuming no underscores or a leading '+' - // sign) rather than the full set of cases allowed by the Wuffs API. - // - // When we have 19 or fewer mantissa digits, run Eisel-Lemire once (trying - // for an exact result). When we have more than 19 mantissa digits, run it - // twice to get a lower and upper bound. We still have an exact result - // (within f64's rounding margin) if both bounds are equal (and valid). - uint32_t i_max = h->num_digits; - if (i_max > 19) { - i_max = 19; - } - int32_t exp10 = h->decimal_point - ((int32_t)i_max); - if ((-307 <= exp10) && (exp10 <= 288)) { - uint64_t man = 0; - uint32_t i; - for (i = 0; i < i_max; i++) { - man = (10 * man) + h->digits[i]; - } - while (man != 0) { // The 'while' is just an 'if' that we can 'break'. - int64_t r0 = - wuffs_base__private_implementation__parse_number_f64_eisel_lemire( - man + 0, exp10); - if (r0 < 0) { - break; - } else if (h->num_digits > 19) { - int64_t r1 = - wuffs_base__private_implementation__parse_number_f64_eisel_lemire( - man + 1, exp10); - if (r1 != r0) { - break; - } - } - wuffs_base__result_f64 ret; - ret.status.repr = NULL; - ret.value = wuffs_base__ieee_754_bit_representation__from_u64_to_f64( - ((uint64_t)r0) | (((uint64_t)(h->negative)) << 63)); - return ret; - } - } - - // When Eisel-Lemire fails, fall back to Simple Decimal Conversion. See - // https://nigeltao.github.io/blog/2020/parse-number-f64-simple.html - // - // Scale by powers of 2 until we're in the range [0.1 .. 10]. Equivalently, - // that h->decimal_point is +0 or +1. - // - // First we shift right while at or above 10... - const int32_t f64_bias = -1023; - int32_t exp2 = 0; - while (h->decimal_point > 1) { - uint32_t n = (uint32_t)(+h->decimal_point); - uint32_t shift = - (n < num_powers) - ? powers[n] - : WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL; - - wuffs_base__private_implementation__high_prec_dec__small_rshift(h, shift); - if (h->decimal_point < - -WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE) { - goto zero; - } - exp2 += (int32_t)shift; - } - // ...then we shift left while below 0.1. - while (h->decimal_point < 0) { - uint32_t shift; - uint32_t n = (uint32_t)(-h->decimal_point); - shift = (n < num_powers) - // The +1 is per "when targeting h->decimal_point being +0 or - // +1... when left shifting" in the powers comment above. - ? (powers[n] + 1) - : WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL; - - wuffs_base__private_implementation__high_prec_dec__small_lshift(h, shift); - if (h->decimal_point > - +WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__DECIMAL_POINT__RANGE) { - goto infinity; - } - exp2 -= (int32_t)shift; - } - - // To get from "in the range [0.1 .. 10]" to "in the range [1 .. 2]" (which - // will give us our exponent in base-2), the mantissa's first 3 digits will - // determine the final left shift, equal to 52 (the number of explicit f64 - // bits) plus an additional adjustment. - int man3 = (100 * h->digits[0]) + - ((h->num_digits > 1) ? (10 * h->digits[1]) : 0) + - ((h->num_digits > 2) ? h->digits[2] : 0); - int32_t additional_lshift = 0; - if (h->decimal_point == 0) { // The value is in [0.1 .. 1]. - if (man3 < 125) { - additional_lshift = +4; - } else if (man3 < 250) { - additional_lshift = +3; - } else if (man3 < 500) { - additional_lshift = +2; - } else { - additional_lshift = +1; - } - } else { // The value is in [1 .. 10]. - if (man3 < 200) { - additional_lshift = -0; - } else if (man3 < 400) { - additional_lshift = -1; - } else if (man3 < 800) { - additional_lshift = -2; - } else { - additional_lshift = -3; - } - } - exp2 -= additional_lshift; - uint32_t final_lshift = (uint32_t)(52 + additional_lshift); - - // The minimum normal exponent is (f64_bias + 1). - while ((f64_bias + 1) > exp2) { - uint32_t n = (uint32_t)((f64_bias + 1) - exp2); - if (n > WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL) { - n = WUFFS_BASE__PRIVATE_IMPLEMENTATION__HPD__SHIFT__MAX_INCL; - } - wuffs_base__private_implementation__high_prec_dec__small_rshift(h, n); - exp2 += (int32_t)n; - } - - // Check for overflow. - if ((exp2 - f64_bias) >= 0x07FF) { // (1 << 11) - 1. - goto infinity; - } - - // Extract 53 bits for the mantissa (in base-2). - wuffs_base__private_implementation__high_prec_dec__small_lshift( - h, final_lshift); - uint64_t man2 = - wuffs_base__private_implementation__high_prec_dec__rounded_integer(h); - - // Rounding might have added one bit. If so, shift and re-check overflow. - if ((man2 >> 53) != 0) { - man2 >>= 1; - exp2++; - if ((exp2 - f64_bias) >= 0x07FF) { // (1 << 11) - 1. - goto infinity; - } - } - - // Handle subnormal numbers. - if ((man2 >> 52) == 0) { - exp2 = f64_bias; - } - - // Pack the bits and return. - uint64_t exp2_bits = - (uint64_t)((exp2 - f64_bias) & 0x07FF); // (1 << 11) - 1. - uint64_t bits = (man2 & 0x000FFFFFFFFFFFFF) | // (1 << 52) - 1. - (exp2_bits << 52) | // - (h->negative ? 0x8000000000000000 : 0); // (1 << 63). - - wuffs_base__result_f64 ret; - ret.status.repr = NULL; - ret.value = wuffs_base__ieee_754_bit_representation__from_u64_to_f64(bits); - return ret; - } while (0); - -zero: - do { - uint64_t bits = h->negative ? 0x8000000000000000 : 0; - - wuffs_base__result_f64 ret; - ret.status.repr = NULL; - ret.value = wuffs_base__ieee_754_bit_representation__from_u64_to_f64(bits); - return ret; - } while (0); - -infinity: - do { - if (options & WUFFS_BASE__PARSE_NUMBER_FXX__REJECT_INF_AND_NAN) { - wuffs_base__result_f64 ret; - ret.status.repr = wuffs_base__error__bad_argument; - ret.value = 0; - return ret; - } - - uint64_t bits = h->negative ? 0xFFF0000000000000 : 0x7FF0000000000000; - - wuffs_base__result_f64 ret; - ret.status.repr = NULL; - ret.value = wuffs_base__ieee_754_bit_representation__from_u64_to_f64(bits); - return ret; - } while (0); -} - -static inline bool // -wuffs_base__private_implementation__is_decimal_digit(uint8_t c) { - return ('0' <= c) && (c <= '9'); -} - -WUFFS_BASE__MAYBE_STATIC wuffs_base__result_f64 // -wuffs_base__parse_number_f64(wuffs_base__slice_u8 s, uint32_t options) { - // In practice, almost all "dd.ddddE±xxx" numbers can be represented - // losslessly by a uint64_t mantissa "dddddd" and an int32_t base-10 - // exponent, adjusting "xxx" for the position (if present) of the decimal - // separator '.' or ','. - // - // This (u64 man, i32 exp10) data structure is superficially similar to the - // "Do It Yourself Floating Point" type from Loitsch (†), but the exponent - // here is base-10, not base-2. - // - // If s's number fits in a (man, exp10), parse that pair with the - // Eisel-Lemire algorithm. If not, or if Eisel-Lemire fails, parsing s with - // the fallback algorithm is slower but comprehensive. - // - // † "Printing Floating-Point Numbers Quickly and Accurately with Integers" - // (https://www.cs.tufts.edu/~nr/cs257/archive/florian-loitsch/printf.pdf). - // Florian Loitsch is also the primary contributor to - // https://github.com/google/double-conversion - do { - // Calculating that (man, exp10) pair needs to stay within s's bounds. - // Provided that s isn't extremely long, work on a NUL-terminated copy of - // s's contents. The NUL byte isn't a valid part of "±dd.ddddE±xxx". - // - // As the pointer p walks the contents, it's faster to repeatedly check "is - // *p a valid digit" than "is p within bounds and *p a valid digit". - if (s.len >= 256) { - goto fallback; - } - uint8_t z[256]; - memcpy(&z[0], s.ptr, s.len); - z[s.len] = 0; - const uint8_t* p = &z[0]; - - // Look for a leading minus sign. Technically, we could also look for an - // optional plus sign, but the "script/process-json-numbers.c with -p" - // benchmark is noticably slower if we do. It's optional and, in practice, - // usually absent. Let the fallback catch it. - bool negative = (*p == '-'); - if (negative) { - p++; - } - - // After walking "dd.dddd", comparing p later with p now will produce the - // number of "d"s and "."s. - const uint8_t* const start_of_digits_ptr = p; - - // Walk the "d"s before a '.', 'E', NUL byte, etc. If it starts with '0', - // it must be a single '0'. If it starts with a non-zero decimal digit, it - // can be a sequence of decimal digits. - // - // Update the man variable during the walk. It's OK if man overflows now. - // We'll detect that later. - uint64_t man; - if (*p == '0') { - man = 0; - p++; - if (wuffs_base__private_implementation__is_decimal_digit(*p)) { - goto fallback; - } - } else if (wuffs_base__private_implementation__is_decimal_digit(*p)) { - man = ((uint8_t)(*p - '0')); - p++; - for (; wuffs_base__private_implementation__is_decimal_digit(*p); p++) { - man = (10 * man) + ((uint8_t)(*p - '0')); - } - } else { - goto fallback; - } - - // Walk the "d"s after the optional decimal separator ('.' or ','), - // updating the man and exp10 variables. - int32_t exp10 = 0; - if (*p == - ((options & WUFFS_BASE__PARSE_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA) - ? ',' - : '.')) { - p++; - const uint8_t* first_after_separator_ptr = p; - if (!wuffs_base__private_implementation__is_decimal_digit(*p)) { - goto fallback; - } - man = (10 * man) + ((uint8_t)(*p - '0')); - p++; - for (; wuffs_base__private_implementation__is_decimal_digit(*p); p++) { - man = (10 * man) + ((uint8_t)(*p - '0')); - } - exp10 = ((int32_t)(first_after_separator_ptr - p)); - } - - // Count the number of digits: - // - for an input of "314159", digit_count is 6. - // - for an input of "3.14159", digit_count is 7. - // - // This is off-by-one if there is a decimal separator. That's OK for now. - // We'll correct for that later. The "script/process-json-numbers.c with - // -p" benchmark is noticably slower if we try to correct for that now. - uint32_t digit_count = (uint32_t)(p - start_of_digits_ptr); - - // Update exp10 for the optional exponent, starting with 'E' or 'e'. - if ((*p | 0x20) == 'e') { - p++; - int32_t exp_sign = +1; - if (*p == '-') { - p++; - exp_sign = -1; - } else if (*p == '+') { - p++; - } - if (!wuffs_base__private_implementation__is_decimal_digit(*p)) { - goto fallback; - } - int32_t exp_num = ((uint8_t)(*p - '0')); - p++; - // The rest of the exp_num walking has a peculiar control flow but, once - // again, the "script/process-json-numbers.c with -p" benchmark is - // sensitive to alternative formulations. - if (wuffs_base__private_implementation__is_decimal_digit(*p)) { - exp_num = (10 * exp_num) + ((uint8_t)(*p - '0')); - p++; - } - if (wuffs_base__private_implementation__is_decimal_digit(*p)) { - exp_num = (10 * exp_num) + ((uint8_t)(*p - '0')); - p++; - } - while (wuffs_base__private_implementation__is_decimal_digit(*p)) { - if (exp_num > 0x1000000) { - goto fallback; - } - exp_num = (10 * exp_num) + ((uint8_t)(*p - '0')); - p++; - } - exp10 += exp_sign * exp_num; - } - - // The Wuffs API is that the original slice has no trailing data. It also - // allows underscores, which we don't catch here but the fallback should. - if (p != &z[s.len]) { - goto fallback; - } - - // Check that the uint64_t typed man variable has not overflowed, based on - // digit_count. - // - // For reference: - // - (1 << 63) is 9223372036854775808, which has 19 decimal digits. - // - (1 << 64) is 18446744073709551616, which has 20 decimal digits. - // - 19 nines, 9999999999999999999, is 0x8AC7230489E7FFFF, which has 64 - // bits and 16 hexadecimal digits. - // - 20 nines, 99999999999999999999, is 0x56BC75E2D630FFFFF, which has 67 - // bits and 17 hexadecimal digits. - if (digit_count > 19) { - // Even if we have more than 19 pseudo-digits, it's not yet definitely an - // overflow. Recall that digit_count might be off-by-one (too large) if - // there's a decimal separator. It will also over-report the number of - // meaningful digits if the input looks something like "0.000dddExxx". - // - // We adjust by the number of leading '0's and '.'s and re-compare to 19. - // Once again, technically, we could skip ','s too, but that perturbs the - // "script/process-json-numbers.c with -p" benchmark. - const uint8_t* q = start_of_digits_ptr; - for (; (*q == '0') || (*q == '.'); q++) { - } - digit_count -= (uint32_t)(q - start_of_digits_ptr); - if (digit_count > 19) { - goto fallback; - } - } - - // The wuffs_base__private_implementation__parse_number_f64_eisel_lemire - // preconditions include that exp10 is in the range [-307 ..= 288]. - if ((exp10 < -307) || (288 < exp10)) { - goto fallback; - } - - // If both man and (10 ** exp10) are exactly representable by a double, we - // don't need to run the Eisel-Lemire algorithm. - if ((-22 <= exp10) && (exp10 <= 22) && ((man >> 53) == 0)) { - double d = (double)man; - if (exp10 >= 0) { - d *= wuffs_base__private_implementation__f64_powers_of_10[+exp10]; - } else { - d /= wuffs_base__private_implementation__f64_powers_of_10[-exp10]; - } - wuffs_base__result_f64 ret; - ret.status.repr = NULL; - ret.value = negative ? -d : +d; - return ret; - } - - // The wuffs_base__private_implementation__parse_number_f64_eisel_lemire - // preconditions include that man is non-zero. Parsing "0" should be caught - // by the "If both man and (10 ** exp10)" above, but "0e99" might not. - if (man == 0) { - goto fallback; - } - - // Our man and exp10 are in range. Run the Eisel-Lemire algorithm. - int64_t r = - wuffs_base__private_implementation__parse_number_f64_eisel_lemire( - man, exp10); - if (r < 0) { - goto fallback; - } - wuffs_base__result_f64 ret; - ret.status.repr = NULL; - ret.value = wuffs_base__ieee_754_bit_representation__from_u64_to_f64( - ((uint64_t)r) | (((uint64_t)negative) << 63)); - return ret; - } while (0); - -fallback: - do { - wuffs_base__private_implementation__high_prec_dec h; - wuffs_base__status status = - wuffs_base__private_implementation__high_prec_dec__parse(&h, s, - options); - if (status.repr) { - return wuffs_base__private_implementation__parse_number_f64_special( - s, options); - } - return wuffs_base__private_implementation__high_prec_dec__to_f64(&h, - options); - } while (0); -} - -// -------- - -static inline size_t // -wuffs_base__private_implementation__render_inf(wuffs_base__slice_u8 dst, - bool neg, - uint32_t options) { - if (neg) { - if (dst.len < 4) { - return 0; - } - wuffs_base__poke_u32le__no_bounds_check(dst.ptr, 0x666E492D); // '-Inf'le. - return 4; - } - - if (options & WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN) { - if (dst.len < 4) { - return 0; - } - wuffs_base__poke_u32le__no_bounds_check(dst.ptr, 0x666E492B); // '+Inf'le. - return 4; - } - - if (dst.len < 3) { - return 0; - } - wuffs_base__poke_u24le__no_bounds_check(dst.ptr, 0x666E49); // 'Inf'le. - return 3; -} - -static inline size_t // -wuffs_base__private_implementation__render_nan(wuffs_base__slice_u8 dst) { - if (dst.len < 3) { - return 0; - } - wuffs_base__poke_u24le__no_bounds_check(dst.ptr, 0x4E614E); // 'NaN'le. - return 3; -} - -static size_t // -wuffs_base__private_implementation__high_prec_dec__render_exponent_absent( - wuffs_base__slice_u8 dst, - wuffs_base__private_implementation__high_prec_dec* h, - uint32_t precision, - uint32_t options) { - size_t n = (h->negative || - (options & WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN)) - ? 1 - : 0; - if (h->decimal_point <= 0) { - n += 1; - } else { - n += (size_t)(h->decimal_point); - } - if (precision > 0) { - n += precision + 1; // +1 for the '.'. - } - - // Don't modify dst if the formatted number won't fit. - if (n > dst.len) { - return 0; - } - - // Align-left or align-right. - uint8_t* ptr = (options & WUFFS_BASE__RENDER_NUMBER_XXX__ALIGN_RIGHT) - ? &dst.ptr[dst.len - n] - : &dst.ptr[0]; - - // Leading "±". - if (h->negative) { - *ptr++ = '-'; - } else if (options & WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN) { - *ptr++ = '+'; - } - - // Integral digits. - if (h->decimal_point <= 0) { - *ptr++ = '0'; - } else { - uint32_t m = - wuffs_base__u32__min(h->num_digits, (uint32_t)(h->decimal_point)); - uint32_t i = 0; - for (; i < m; i++) { - *ptr++ = (uint8_t)('0' | h->digits[i]); - } - for (; i < (uint32_t)(h->decimal_point); i++) { - *ptr++ = '0'; - } - } - - // Separator and then fractional digits. - if (precision > 0) { - *ptr++ = - (options & WUFFS_BASE__RENDER_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA) - ? ',' - : '.'; - uint32_t i = 0; - for (; i < precision; i++) { - uint32_t j = ((uint32_t)(h->decimal_point)) + i; - *ptr++ = (uint8_t)('0' | ((j < h->num_digits) ? h->digits[j] : 0)); - } - } - - return n; -} - -static size_t // -wuffs_base__private_implementation__high_prec_dec__render_exponent_present( - wuffs_base__slice_u8 dst, - wuffs_base__private_implementation__high_prec_dec* h, - uint32_t precision, - uint32_t options) { - int32_t exp = 0; - if (h->num_digits > 0) { - exp = h->decimal_point - 1; - } - bool negative_exp = exp < 0; - if (negative_exp) { - exp = -exp; - } - - size_t n = (h->negative || - (options & WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN)) - ? 4 - : 3; // Mininum 3 bytes: first digit and then "e±". - if (precision > 0) { - n += precision + 1; // +1 for the '.'. - } - n += (exp < 100) ? 2 : 3; - - // Don't modify dst if the formatted number won't fit. - if (n > dst.len) { - return 0; - } - - // Align-left or align-right. - uint8_t* ptr = (options & WUFFS_BASE__RENDER_NUMBER_XXX__ALIGN_RIGHT) - ? &dst.ptr[dst.len - n] - : &dst.ptr[0]; - - // Leading "±". - if (h->negative) { - *ptr++ = '-'; - } else if (options & WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN) { - *ptr++ = '+'; - } - - // Integral digit. - if (h->num_digits > 0) { - *ptr++ = (uint8_t)('0' | h->digits[0]); - } else { - *ptr++ = '0'; - } - - // Separator and then fractional digits. - if (precision > 0) { - *ptr++ = - (options & WUFFS_BASE__RENDER_NUMBER_FXX__DECIMAL_SEPARATOR_IS_A_COMMA) - ? ',' - : '.'; - uint32_t i = 1; - uint32_t j = wuffs_base__u32__min(h->num_digits, precision + 1); - for (; i < j; i++) { - *ptr++ = (uint8_t)('0' | h->digits[i]); - } - for (; i <= precision; i++) { - *ptr++ = '0'; - } - } - - // Exponent: "e±" and then 2 or 3 digits. - *ptr++ = 'e'; - *ptr++ = negative_exp ? '-' : '+'; - if (exp < 10) { - *ptr++ = '0'; - *ptr++ = (uint8_t)('0' | exp); - } else if (exp < 100) { - *ptr++ = (uint8_t)('0' | (exp / 10)); - *ptr++ = (uint8_t)('0' | (exp % 10)); - } else { - int32_t e = exp / 100; - exp -= e * 100; - *ptr++ = (uint8_t)('0' | e); - *ptr++ = (uint8_t)('0' | (exp / 10)); - *ptr++ = (uint8_t)('0' | (exp % 10)); - } - - return n; -} - -WUFFS_BASE__MAYBE_STATIC size_t // -wuffs_base__render_number_f64(wuffs_base__slice_u8 dst, - double x, - uint32_t precision, - uint32_t options) { - // Decompose x (64 bits) into negativity (1 bit), base-2 exponent (11 bits - // with a -1023 bias) and mantissa (52 bits). - uint64_t bits = wuffs_base__ieee_754_bit_representation__from_f64_to_u64(x); - bool neg = (bits >> 63) != 0; - int32_t exp2 = ((int32_t)(bits >> 52)) & 0x7FF; - uint64_t man = bits & 0x000FFFFFFFFFFFFFul; - - // Apply the exponent bias and set the implicit top bit of the mantissa, - // unless x is subnormal. Also take care of Inf and NaN. - if (exp2 == 0x7FF) { - if (man != 0) { - return wuffs_base__private_implementation__render_nan(dst); - } - return wuffs_base__private_implementation__render_inf(dst, neg, options); - } else if (exp2 == 0) { - exp2 = -1022; - } else { - exp2 -= 1023; - man |= 0x0010000000000000ul; - } - - // Ensure that precision isn't too large. - if (precision > 4095) { - precision = 4095; - } - - // Convert from the (neg, exp2, man) tuple to an HPD. - wuffs_base__private_implementation__high_prec_dec h; - wuffs_base__private_implementation__high_prec_dec__assign(&h, man, neg); - if (h.num_digits > 0) { - wuffs_base__private_implementation__high_prec_dec__lshift( - &h, exp2 - 52); // 52 mantissa bits. - } - - // Handle the "%e" and "%f" formats. - switch (options & (WUFFS_BASE__RENDER_NUMBER_FXX__EXPONENT_ABSENT | - WUFFS_BASE__RENDER_NUMBER_FXX__EXPONENT_PRESENT)) { - case WUFFS_BASE__RENDER_NUMBER_FXX__EXPONENT_ABSENT: // The "%"f" format. - if (options & WUFFS_BASE__RENDER_NUMBER_FXX__JUST_ENOUGH_PRECISION) { - wuffs_base__private_implementation__high_prec_dec__round_just_enough( - &h, exp2, man); - int32_t p = ((int32_t)(h.num_digits)) - h.decimal_point; - precision = ((uint32_t)(wuffs_base__i32__max(0, p))); - } else { - wuffs_base__private_implementation__high_prec_dec__round_nearest( - &h, ((int32_t)precision) + h.decimal_point); - } - return wuffs_base__private_implementation__high_prec_dec__render_exponent_absent( - dst, &h, precision, options); - - case WUFFS_BASE__RENDER_NUMBER_FXX__EXPONENT_PRESENT: // The "%e" format. - if (options & WUFFS_BASE__RENDER_NUMBER_FXX__JUST_ENOUGH_PRECISION) { - wuffs_base__private_implementation__high_prec_dec__round_just_enough( - &h, exp2, man); - precision = (h.num_digits > 0) ? (h.num_digits - 1) : 0; - } else { - wuffs_base__private_implementation__high_prec_dec__round_nearest( - &h, ((int32_t)precision) + 1); - } - return wuffs_base__private_implementation__high_prec_dec__render_exponent_present( - dst, &h, precision, options); - } - - // We have the "%g" format and so precision means the number of significant - // digits, not the number of digits after the decimal separator. Perform - // rounding and determine whether to use "%e" or "%f". - int32_t e_threshold = 0; - if (options & WUFFS_BASE__RENDER_NUMBER_FXX__JUST_ENOUGH_PRECISION) { - wuffs_base__private_implementation__high_prec_dec__round_just_enough( - &h, exp2, man); - precision = h.num_digits; - e_threshold = 6; - } else { - if (precision == 0) { - precision = 1; - } - wuffs_base__private_implementation__high_prec_dec__round_nearest( - &h, ((int32_t)precision)); - e_threshold = ((int32_t)precision); - int32_t nd = ((int32_t)(h.num_digits)); - if ((e_threshold > nd) && (nd >= h.decimal_point)) { - e_threshold = nd; - } - } - - // Use the "%e" format if the exponent is large. - int32_t e = h.decimal_point - 1; - if ((e < -4) || (e_threshold <= e)) { - uint32_t p = wuffs_base__u32__min(precision, h.num_digits); - return wuffs_base__private_implementation__high_prec_dec__render_exponent_present( - dst, &h, (p > 0) ? (p - 1) : 0, options); - } - - // Use the "%f" format otherwise. - int32_t p = ((int32_t)precision); - if (p > h.decimal_point) { - p = ((int32_t)(h.num_digits)); - } - precision = ((uint32_t)(wuffs_base__i32__max(0, p - h.decimal_point))); - return wuffs_base__private_implementation__high_prec_dec__render_exponent_absent( - dst, &h, precision, options); -} - -#endif // !defined(WUFFS_CONFIG__MODULES) || - // defined(WUFFS_CONFIG__MODULE__BASE) || - // defined(WUFFS_CONFIG__MODULE__BASE__FLOATCONV) - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \ - defined(WUFFS_CONFIG__MODULE__BASE__INTCONV) - -// ---------------- Integer - -// wuffs_base__parse_number__foo_digits entries are 0x00 for invalid digits, -// and (0x80 | v) for valid digits, where v is the 4 bit value. - -static const uint8_t wuffs_base__parse_number__decimal_digits[256] = { - // 0 1 2 3 4 5 6 7 - // 8 9 A B C D E F - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x00 ..= 0x07. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x08 ..= 0x0F. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x10 ..= 0x17. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x18 ..= 0x1F. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x20 ..= 0x27. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x28 ..= 0x2F. - 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, // 0x30 ..= 0x37. '0'-'7'. - 0x88, 0x89, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x38 ..= 0x3F. '8'-'9'. - - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x40 ..= 0x47. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x48 ..= 0x4F. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x50 ..= 0x57. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x58 ..= 0x5F. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x60 ..= 0x67. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x68 ..= 0x6F. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x70 ..= 0x77. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x78 ..= 0x7F. - - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x80 ..= 0x87. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x88 ..= 0x8F. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x90 ..= 0x97. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x98 ..= 0x9F. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xA0 ..= 0xA7. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xA8 ..= 0xAF. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xB0 ..= 0xB7. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xB8 ..= 0xBF. - - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xC0 ..= 0xC7. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xC8 ..= 0xCF. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xD0 ..= 0xD7. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xD8 ..= 0xDF. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xE0 ..= 0xE7. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xE8 ..= 0xEF. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xF0 ..= 0xF7. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xF8 ..= 0xFF. - // 0 1 2 3 4 5 6 7 - // 8 9 A B C D E F -}; - -static const uint8_t wuffs_base__parse_number__hexadecimal_digits[256] = { - // 0 1 2 3 4 5 6 7 - // 8 9 A B C D E F - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x00 ..= 0x07. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x08 ..= 0x0F. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x10 ..= 0x17. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x18 ..= 0x1F. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x20 ..= 0x27. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x28 ..= 0x2F. - 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, // 0x30 ..= 0x37. '0'-'7'. - 0x88, 0x89, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x38 ..= 0x3F. '8'-'9'. - - 0x00, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F, 0x00, // 0x40 ..= 0x47. 'A'-'F'. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x48 ..= 0x4F. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x50 ..= 0x57. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x58 ..= 0x5F. - 0x00, 0x8A, 0x8B, 0x8C, 0x8D, 0x8E, 0x8F, 0x00, // 0x60 ..= 0x67. 'a'-'f'. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x68 ..= 0x6F. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x70 ..= 0x77. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x78 ..= 0x7F. - - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x80 ..= 0x87. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x88 ..= 0x8F. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x90 ..= 0x97. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x98 ..= 0x9F. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xA0 ..= 0xA7. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xA8 ..= 0xAF. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xB0 ..= 0xB7. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xB8 ..= 0xBF. - - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xC0 ..= 0xC7. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xC8 ..= 0xCF. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xD0 ..= 0xD7. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xD8 ..= 0xDF. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xE0 ..= 0xE7. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xE8 ..= 0xEF. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xF0 ..= 0xF7. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0xF8 ..= 0xFF. - // 0 1 2 3 4 5 6 7 - // 8 9 A B C D E F -}; - -static const uint8_t wuffs_base__private_implementation__encode_base16[16] = { - 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, // 0x00 ..= 0x07. - 0x38, 0x39, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, // 0x08 ..= 0x0F. -}; - -// -------- - -WUFFS_BASE__MAYBE_STATIC wuffs_base__result_i64 // -wuffs_base__parse_number_i64(wuffs_base__slice_u8 s, uint32_t options) { - uint8_t* p = s.ptr; - uint8_t* q = s.ptr + s.len; - - if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) { - for (; (p < q) && (*p == '_'); p++) { - } - } - - bool negative = false; - if (p >= q) { - goto fail_bad_argument; - } else if (*p == '-') { - p++; - negative = true; - } else if (*p == '+') { - p++; - } - - do { - wuffs_base__result_u64 r = wuffs_base__parse_number_u64( - wuffs_base__make_slice_u8(p, (size_t)(q - p)), options); - if (r.status.repr != NULL) { - wuffs_base__result_i64 ret; - ret.status.repr = r.status.repr; - ret.value = 0; - return ret; - } else if (negative) { - if (r.value < 0x8000000000000000) { - wuffs_base__result_i64 ret; - ret.status.repr = NULL; - ret.value = -(int64_t)(r.value); - return ret; - } else if (r.value == 0x8000000000000000) { - wuffs_base__result_i64 ret; - ret.status.repr = NULL; - ret.value = INT64_MIN; - return ret; - } - goto fail_out_of_bounds; - } else if (r.value > 0x7FFFFFFFFFFFFFFF) { - goto fail_out_of_bounds; - } else { - wuffs_base__result_i64 ret; - ret.status.repr = NULL; - ret.value = +(int64_t)(r.value); - return ret; - } - } while (0); - -fail_bad_argument: - do { - wuffs_base__result_i64 ret; - ret.status.repr = wuffs_base__error__bad_argument; - ret.value = 0; - return ret; - } while (0); - -fail_out_of_bounds: - do { - wuffs_base__result_i64 ret; - ret.status.repr = wuffs_base__error__out_of_bounds; - ret.value = 0; - return ret; - } while (0); -} - -WUFFS_BASE__MAYBE_STATIC wuffs_base__result_u64 // -wuffs_base__parse_number_u64(wuffs_base__slice_u8 s, uint32_t options) { - uint8_t* p = s.ptr; - uint8_t* q = s.ptr + s.len; - - if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) { - for (; (p < q) && (*p == '_'); p++) { - } - } - - if (p >= q) { - goto fail_bad_argument; - - } else if (*p == '0') { - p++; - if (p >= q) { - goto ok_zero; - } - if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) { - if (*p == '_') { - p++; - for (; p < q; p++) { - if (*p != '_') { - if (options & - WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_MULTIPLE_LEADING_ZEROES) { - goto decimal; - } - goto fail_bad_argument; - } - } - goto ok_zero; - } - } - - if ((*p == 'x') || (*p == 'X')) { - p++; - if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) { - for (; (p < q) && (*p == '_'); p++) { - } - } - if (p < q) { - goto hexadecimal; - } - - } else if ((*p == 'd') || (*p == 'D')) { - p++; - if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES) { - for (; (p < q) && (*p == '_'); p++) { - } - } - if (p < q) { - goto decimal; - } - } - - if (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_MULTIPLE_LEADING_ZEROES) { - goto decimal; - } - goto fail_bad_argument; - } - -decimal: - do { - uint64_t v = wuffs_base__parse_number__decimal_digits[*p++]; - if (v == 0) { - goto fail_bad_argument; - } - v &= 0x0F; - - // UINT64_MAX is 18446744073709551615, which is ((10 * max10) + max1). - const uint64_t max10 = 1844674407370955161u; - const uint8_t max1 = 5; - - for (; p < q; p++) { - if ((*p == '_') && - (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES)) { - continue; - } - uint8_t digit = wuffs_base__parse_number__decimal_digits[*p]; - if (digit == 0) { - goto fail_bad_argument; - } - digit &= 0x0F; - if ((v > max10) || ((v == max10) && (digit > max1))) { - goto fail_out_of_bounds; - } - v = (10 * v) + ((uint64_t)(digit)); - } - - wuffs_base__result_u64 ret; - ret.status.repr = NULL; - ret.value = v; - return ret; - } while (0); - -hexadecimal: - do { - uint64_t v = wuffs_base__parse_number__hexadecimal_digits[*p++]; - if (v == 0) { - goto fail_bad_argument; - } - v &= 0x0F; - - for (; p < q; p++) { - if ((*p == '_') && - (options & WUFFS_BASE__PARSE_NUMBER_XXX__ALLOW_UNDERSCORES)) { - continue; - } - uint8_t digit = wuffs_base__parse_number__hexadecimal_digits[*p]; - if (digit == 0) { - goto fail_bad_argument; - } - digit &= 0x0F; - if ((v >> 60) != 0) { - goto fail_out_of_bounds; - } - v = (v << 4) | ((uint64_t)(digit)); - } - - wuffs_base__result_u64 ret; - ret.status.repr = NULL; - ret.value = v; - return ret; - } while (0); - -ok_zero: - do { - wuffs_base__result_u64 ret; - ret.status.repr = NULL; - ret.value = 0; - return ret; - } while (0); - -fail_bad_argument: - do { - wuffs_base__result_u64 ret; - ret.status.repr = wuffs_base__error__bad_argument; - ret.value = 0; - return ret; - } while (0); - -fail_out_of_bounds: - do { - wuffs_base__result_u64 ret; - ret.status.repr = wuffs_base__error__out_of_bounds; - ret.value = 0; - return ret; - } while (0); -} - -// -------- - -// wuffs_base__render_number__first_hundred contains the decimal encodings of -// the first one hundred numbers [0 ..= 99]. -static const uint8_t wuffs_base__render_number__first_hundred[200] = { - '0', '0', '0', '1', '0', '2', '0', '3', '0', '4', // - '0', '5', '0', '6', '0', '7', '0', '8', '0', '9', // - '1', '0', '1', '1', '1', '2', '1', '3', '1', '4', // - '1', '5', '1', '6', '1', '7', '1', '8', '1', '9', // - '2', '0', '2', '1', '2', '2', '2', '3', '2', '4', // - '2', '5', '2', '6', '2', '7', '2', '8', '2', '9', // - '3', '0', '3', '1', '3', '2', '3', '3', '3', '4', // - '3', '5', '3', '6', '3', '7', '3', '8', '3', '9', // - '4', '0', '4', '1', '4', '2', '4', '3', '4', '4', // - '4', '5', '4', '6', '4', '7', '4', '8', '4', '9', // - '5', '0', '5', '1', '5', '2', '5', '3', '5', '4', // - '5', '5', '5', '6', '5', '7', '5', '8', '5', '9', // - '6', '0', '6', '1', '6', '2', '6', '3', '6', '4', // - '6', '5', '6', '6', '6', '7', '6', '8', '6', '9', // - '7', '0', '7', '1', '7', '2', '7', '3', '7', '4', // - '7', '5', '7', '6', '7', '7', '7', '8', '7', '9', // - '8', '0', '8', '1', '8', '2', '8', '3', '8', '4', // - '8', '5', '8', '6', '8', '7', '8', '8', '8', '9', // - '9', '0', '9', '1', '9', '2', '9', '3', '9', '4', // - '9', '5', '9', '6', '9', '7', '9', '8', '9', '9', // -}; - -static size_t // -wuffs_base__private_implementation__render_number_u64(wuffs_base__slice_u8 dst, - uint64_t x, - uint32_t options, - bool neg) { - uint8_t buf[WUFFS_BASE__U64__BYTE_LENGTH__MAX_INCL]; - uint8_t* ptr = &buf[0] + sizeof(buf); - - while (x >= 100) { - size_t index = ((size_t)((x % 100) * 2)); - x /= 100; - uint8_t s0 = wuffs_base__render_number__first_hundred[index + 0]; - uint8_t s1 = wuffs_base__render_number__first_hundred[index + 1]; - ptr -= 2; - ptr[0] = s0; - ptr[1] = s1; - } - - if (x < 10) { - ptr -= 1; - ptr[0] = (uint8_t)('0' + x); - } else { - size_t index = ((size_t)(x * 2)); - uint8_t s0 = wuffs_base__render_number__first_hundred[index + 0]; - uint8_t s1 = wuffs_base__render_number__first_hundred[index + 1]; - ptr -= 2; - ptr[0] = s0; - ptr[1] = s1; - } - - if (neg) { - ptr -= 1; - ptr[0] = '-'; - } else if (options & WUFFS_BASE__RENDER_NUMBER_XXX__LEADING_PLUS_SIGN) { - ptr -= 1; - ptr[0] = '+'; - } - - size_t n = sizeof(buf) - ((size_t)(ptr - &buf[0])); - if (n > dst.len) { - return 0; - } - memcpy(dst.ptr + ((options & WUFFS_BASE__RENDER_NUMBER_XXX__ALIGN_RIGHT) - ? (dst.len - n) - : 0), - ptr, n); - return n; -} - -WUFFS_BASE__MAYBE_STATIC size_t // -wuffs_base__render_number_i64(wuffs_base__slice_u8 dst, - int64_t x, - uint32_t options) { - uint64_t u = (uint64_t)x; - bool neg = x < 0; - if (neg) { - u = 1 + ~u; - } - return wuffs_base__private_implementation__render_number_u64(dst, u, options, - neg); -} - -WUFFS_BASE__MAYBE_STATIC size_t // -wuffs_base__render_number_u64(wuffs_base__slice_u8 dst, - uint64_t x, - uint32_t options) { - return wuffs_base__private_implementation__render_number_u64(dst, x, options, - false); -} - -// ---------------- Base-16 - -WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output // -wuffs_base__base_16__decode2(wuffs_base__slice_u8 dst, - wuffs_base__slice_u8 src, - bool src_closed, - uint32_t options) { - wuffs_base__transform__output o; - size_t src_len2 = src.len / 2; - size_t len; - if (dst.len < src_len2) { - len = dst.len; - o.status.repr = wuffs_base__suspension__short_write; - } else { - len = src_len2; - if (!src_closed) { - o.status.repr = wuffs_base__suspension__short_read; - } else if (src.len & 1) { - o.status.repr = wuffs_base__error__bad_data; - } else { - o.status.repr = NULL; - } - } - - uint8_t* d = dst.ptr; - uint8_t* s = src.ptr; - size_t n = len; - - while (n--) { - *d = (uint8_t)((wuffs_base__parse_number__hexadecimal_digits[s[0]] << 4) | - (wuffs_base__parse_number__hexadecimal_digits[s[1]] & 0x0F)); - d += 1; - s += 2; - } - - o.num_dst = len; - o.num_src = len * 2; - return o; -} - -WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output // -wuffs_base__base_16__decode4(wuffs_base__slice_u8 dst, - wuffs_base__slice_u8 src, - bool src_closed, - uint32_t options) { - wuffs_base__transform__output o; - size_t src_len4 = src.len / 4; - size_t len = dst.len < src_len4 ? dst.len : src_len4; - if (dst.len < src_len4) { - len = dst.len; - o.status.repr = wuffs_base__suspension__short_write; - } else { - len = src_len4; - if (!src_closed) { - o.status.repr = wuffs_base__suspension__short_read; - } else if (src.len & 1) { - o.status.repr = wuffs_base__error__bad_data; - } else { - o.status.repr = NULL; - } - } - - uint8_t* d = dst.ptr; - uint8_t* s = src.ptr; - size_t n = len; - - while (n--) { - *d = (uint8_t)((wuffs_base__parse_number__hexadecimal_digits[s[2]] << 4) | - (wuffs_base__parse_number__hexadecimal_digits[s[3]] & 0x0F)); - d += 1; - s += 4; - } - - o.num_dst = len; - o.num_src = len * 4; - return o; -} - -WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output // -wuffs_base__base_16__encode2(wuffs_base__slice_u8 dst, - wuffs_base__slice_u8 src, - bool src_closed, - uint32_t options) { - wuffs_base__transform__output o; - size_t dst_len2 = dst.len / 2; - size_t len; - if (dst_len2 < src.len) { - len = dst_len2; - o.status.repr = wuffs_base__suspension__short_write; - } else { - len = src.len; - if (!src_closed) { - o.status.repr = wuffs_base__suspension__short_read; - } else { - o.status.repr = NULL; - } - } - - uint8_t* d = dst.ptr; - uint8_t* s = src.ptr; - size_t n = len; - - while (n--) { - uint8_t c = *s; - d[0] = wuffs_base__private_implementation__encode_base16[c >> 4]; - d[1] = wuffs_base__private_implementation__encode_base16[c & 0x0F]; - d += 2; - s += 1; - } - - o.num_dst = len * 2; - o.num_src = len; - return o; -} - -WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output // -wuffs_base__base_16__encode4(wuffs_base__slice_u8 dst, - wuffs_base__slice_u8 src, - bool src_closed, - uint32_t options) { - wuffs_base__transform__output o; - size_t dst_len4 = dst.len / 4; - size_t len; - if (dst_len4 < src.len) { - len = dst_len4; - o.status.repr = wuffs_base__suspension__short_write; - } else { - len = src.len; - if (!src_closed) { - o.status.repr = wuffs_base__suspension__short_read; - } else { - o.status.repr = NULL; - } - } - - uint8_t* d = dst.ptr; - uint8_t* s = src.ptr; - size_t n = len; - - while (n--) { - uint8_t c = *s; - d[0] = '\\'; - d[1] = 'x'; - d[2] = wuffs_base__private_implementation__encode_base16[c >> 4]; - d[3] = wuffs_base__private_implementation__encode_base16[c & 0x0F]; - d += 4; - s += 1; - } - - o.num_dst = len * 4; - o.num_src = len; - return o; -} - -// ---------------- Base-64 - -// The two base-64 alphabets, std and url, differ only in the last two codes. -// - std: "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/" -// - url: "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_" - -static const uint8_t wuffs_base__base_64__decode_std[256] = { - // 0 1 2 3 4 5 6 7 - // 8 9 A B C D E F - 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x00 ..= 0x07. - 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x08 ..= 0x0F. - 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x10 ..= 0x17. - 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x18 ..= 0x1F. - 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x20 ..= 0x27. - 0x80, 0x80, 0x80, 0x3E, 0x80, 0x80, 0x80, 0x3F, // 0x28 ..= 0x2F. - 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B, // 0x30 ..= 0x37. - 0x3C, 0x3D, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x38 ..= 0x3F. - - 0x80, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, // 0x40 ..= 0x47. - 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, // 0x48 ..= 0x4F. - 0x0F, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, // 0x50 ..= 0x57. - 0x17, 0x18, 0x19, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x58 ..= 0x5F. - 0x80, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20, // 0x60 ..= 0x67. - 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, // 0x68 ..= 0x6F. - 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, 0x30, // 0x70 ..= 0x77. - 0x31, 0x32, 0x33, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x78 ..= 0x7F. - - 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x80 ..= 0x87. - 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x88 ..= 0x8F. - 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x90 ..= 0x97. - 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x98 ..= 0x9F. - 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xA0 ..= 0xA7. - 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xA8 ..= 0xAF. - 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xB0 ..= 0xB7. - 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xB8 ..= 0xBF. - - 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xC0 ..= 0xC7. - 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xC8 ..= 0xCF. - 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xD0 ..= 0xD7. - 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xD8 ..= 0xDF. - 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xE0 ..= 0xE7. - 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xE8 ..= 0xEF. - 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xF0 ..= 0xF7. - 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xF8 ..= 0xFF. - // 0 1 2 3 4 5 6 7 - // 8 9 A B C D E F -}; - -static const uint8_t wuffs_base__base_64__decode_url[256] = { - // 0 1 2 3 4 5 6 7 - // 8 9 A B C D E F - 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x00 ..= 0x07. - 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x08 ..= 0x0F. - 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x10 ..= 0x17. - 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x18 ..= 0x1F. - 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x20 ..= 0x27. - 0x80, 0x80, 0x80, 0x80, 0x80, 0x3E, 0x80, 0x80, // 0x28 ..= 0x2F. - 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B, // 0x30 ..= 0x37. - 0x3C, 0x3D, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x38 ..= 0x3F. - - 0x80, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, // 0x40 ..= 0x47. - 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, // 0x48 ..= 0x4F. - 0x0F, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, // 0x50 ..= 0x57. - 0x17, 0x18, 0x19, 0x80, 0x80, 0x80, 0x80, 0x3F, // 0x58 ..= 0x5F. - 0x80, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20, // 0x60 ..= 0x67. - 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, // 0x68 ..= 0x6F. - 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, 0x30, // 0x70 ..= 0x77. - 0x31, 0x32, 0x33, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x78 ..= 0x7F. - - 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x80 ..= 0x87. - 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x88 ..= 0x8F. - 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x90 ..= 0x97. - 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0x98 ..= 0x9F. - 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xA0 ..= 0xA7. - 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xA8 ..= 0xAF. - 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xB0 ..= 0xB7. - 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xB8 ..= 0xBF. - - 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xC0 ..= 0xC7. - 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xC8 ..= 0xCF. - 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xD0 ..= 0xD7. - 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xD8 ..= 0xDF. - 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xE0 ..= 0xE7. - 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xE8 ..= 0xEF. - 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xF0 ..= 0xF7. - 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xF8 ..= 0xFF. - // 0 1 2 3 4 5 6 7 - // 8 9 A B C D E F -}; - -static const uint8_t wuffs_base__base_64__encode_std[64] = { - // 0 1 2 3 4 5 6 7 - // 8 9 A B C D E F - 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, // 0x00 ..= 0x07. - 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, 0x50, // 0x08 ..= 0x0F. - 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, // 0x10 ..= 0x17. - 0x59, 0x5A, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, // 0x18 ..= 0x1F. - 0x67, 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, // 0x20 ..= 0x27. - 0x6F, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, // 0x28 ..= 0x2F. - 0x77, 0x78, 0x79, 0x7A, 0x30, 0x31, 0x32, 0x33, // 0x30 ..= 0x37. - 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x2B, 0x2F, // 0x38 ..= 0x3F. -}; - -static const uint8_t wuffs_base__base_64__encode_url[64] = { - // 0 1 2 3 4 5 6 7 - // 8 9 A B C D E F - 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, // 0x00 ..= 0x07. - 0x49, 0x4A, 0x4B, 0x4C, 0x4D, 0x4E, 0x4F, 0x50, // 0x08 ..= 0x0F. - 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, // 0x10 ..= 0x17. - 0x59, 0x5A, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, // 0x18 ..= 0x1F. - 0x67, 0x68, 0x69, 0x6A, 0x6B, 0x6C, 0x6D, 0x6E, // 0x20 ..= 0x27. - 0x6F, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, // 0x28 ..= 0x2F. - 0x77, 0x78, 0x79, 0x7A, 0x30, 0x31, 0x32, 0x33, // 0x30 ..= 0x37. - 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x2D, 0x5F, // 0x38 ..= 0x3F. -}; - -// -------- - -WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output // -wuffs_base__base_64__decode(wuffs_base__slice_u8 dst, - wuffs_base__slice_u8 src, - bool src_closed, - uint32_t options) { - const uint8_t* alphabet = (options & WUFFS_BASE__BASE_64__URL_ALPHABET) - ? wuffs_base__base_64__decode_url - : wuffs_base__base_64__decode_std; - wuffs_base__transform__output o; - uint8_t* d_ptr = dst.ptr; - size_t d_len = dst.len; - const uint8_t* s_ptr = src.ptr; - size_t s_len = src.len; - bool pad = false; - - while (s_len >= 4) { - uint32_t s = wuffs_base__peek_u32le__no_bounds_check(s_ptr); - uint32_t s0 = alphabet[0xFF & (s >> 0)]; - uint32_t s1 = alphabet[0xFF & (s >> 8)]; - uint32_t s2 = alphabet[0xFF & (s >> 16)]; - uint32_t s3 = alphabet[0xFF & (s >> 24)]; - - if (((s0 | s1 | s2 | s3) & 0xC0) != 0) { - if (s_len > 4) { - o.status.repr = wuffs_base__error__bad_data; - goto done; - } else if (!src_closed) { - o.status.repr = wuffs_base__suspension__short_read; - goto done; - } else if ((options & WUFFS_BASE__BASE_64__DECODE_ALLOW_PADDING) && - (s_ptr[3] == '=')) { - pad = true; - if (s_ptr[2] == '=') { - goto src2; - } - goto src3; - } - o.status.repr = wuffs_base__error__bad_data; - goto done; - } - - if (d_len < 3) { - o.status.repr = wuffs_base__suspension__short_write; - goto done; - } - - s_ptr += 4; - s_len -= 4; - s = (s0 << 18) | (s1 << 12) | (s2 << 6) | (s3 << 0); - *d_ptr++ = (uint8_t)(s >> 16); - *d_ptr++ = (uint8_t)(s >> 8); - *d_ptr++ = (uint8_t)(s >> 0); - d_len -= 3; - } - - if (!src_closed) { - o.status.repr = wuffs_base__suspension__short_read; - goto done; - } - - if (s_len == 0) { - o.status.repr = NULL; - goto done; - } else if (s_len == 1) { - o.status.repr = wuffs_base__error__bad_data; - goto done; - } else if (s_len == 2) { - goto src2; - } - -src3: - do { - uint32_t s = wuffs_base__peek_u24le__no_bounds_check(s_ptr); - uint32_t s0 = alphabet[0xFF & (s >> 0)]; - uint32_t s1 = alphabet[0xFF & (s >> 8)]; - uint32_t s2 = alphabet[0xFF & (s >> 16)]; - if ((s0 & 0xC0) || (s1 & 0xC0) || (s2 & 0xC3)) { - o.status.repr = wuffs_base__error__bad_data; - goto done; - } - if (d_len < 2) { - o.status.repr = wuffs_base__suspension__short_write; - goto done; - } - s_ptr += pad ? 4 : 3; - s = (s0 << 18) | (s1 << 12) | (s2 << 6); - *d_ptr++ = (uint8_t)(s >> 16); - *d_ptr++ = (uint8_t)(s >> 8); - o.status.repr = NULL; - goto done; - } while (0); - -src2: - do { - uint32_t s = wuffs_base__peek_u16le__no_bounds_check(s_ptr); - uint32_t s0 = alphabet[0xFF & (s >> 0)]; - uint32_t s1 = alphabet[0xFF & (s >> 8)]; - if ((s0 & 0xC0) || (s1 & 0xCF)) { - o.status.repr = wuffs_base__error__bad_data; - goto done; - } - if (d_len < 1) { - o.status.repr = wuffs_base__suspension__short_write; - goto done; - } - s_ptr += pad ? 4 : 2; - s = (s0 << 18) | (s1 << 12); - *d_ptr++ = (uint8_t)(s >> 16); - o.status.repr = NULL; - goto done; - } while (0); - -done: - o.num_dst = (size_t)(d_ptr - dst.ptr); - o.num_src = (size_t)(s_ptr - src.ptr); - return o; -} - -WUFFS_BASE__MAYBE_STATIC wuffs_base__transform__output // -wuffs_base__base_64__encode(wuffs_base__slice_u8 dst, - wuffs_base__slice_u8 src, - bool src_closed, - uint32_t options) { - const uint8_t* alphabet = (options & WUFFS_BASE__BASE_64__URL_ALPHABET) - ? wuffs_base__base_64__encode_url - : wuffs_base__base_64__encode_std; - wuffs_base__transform__output o; - uint8_t* d_ptr = dst.ptr; - size_t d_len = dst.len; - const uint8_t* s_ptr = src.ptr; - size_t s_len = src.len; - - do { - while (s_len >= 3) { - if (d_len < 4) { - o.status.repr = wuffs_base__suspension__short_write; - goto done; - } - uint32_t s = wuffs_base__peek_u24be__no_bounds_check(s_ptr); - s_ptr += 3; - s_len -= 3; - *d_ptr++ = alphabet[0x3F & (s >> 18)]; - *d_ptr++ = alphabet[0x3F & (s >> 12)]; - *d_ptr++ = alphabet[0x3F & (s >> 6)]; - *d_ptr++ = alphabet[0x3F & (s >> 0)]; - d_len -= 4; - } - - if (!src_closed) { - o.status.repr = wuffs_base__suspension__short_read; - goto done; - } - - if (s_len == 2) { - if (d_len < - ((options & WUFFS_BASE__BASE_64__ENCODE_EMIT_PADDING) ? 4 : 3)) { - o.status.repr = wuffs_base__suspension__short_write; - goto done; - } - uint32_t s = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(s_ptr))) - << 8; - s_ptr += 2; - *d_ptr++ = alphabet[0x3F & (s >> 18)]; - *d_ptr++ = alphabet[0x3F & (s >> 12)]; - *d_ptr++ = alphabet[0x3F & (s >> 6)]; - if (options & WUFFS_BASE__BASE_64__ENCODE_EMIT_PADDING) { - *d_ptr++ = '='; - } - o.status.repr = NULL; - goto done; - - } else if (s_len == 1) { - if (d_len < - ((options & WUFFS_BASE__BASE_64__ENCODE_EMIT_PADDING) ? 4 : 2)) { - o.status.repr = wuffs_base__suspension__short_write; - goto done; - } - uint32_t s = ((uint32_t)(wuffs_base__peek_u8__no_bounds_check(s_ptr))) - << 16; - s_ptr += 1; - *d_ptr++ = alphabet[0x3F & (s >> 18)]; - *d_ptr++ = alphabet[0x3F & (s >> 12)]; - if (options & WUFFS_BASE__BASE_64__ENCODE_EMIT_PADDING) { - *d_ptr++ = '='; - *d_ptr++ = '='; - } - o.status.repr = NULL; - goto done; - - } else { - o.status.repr = NULL; - goto done; - } - } while (0); - -done: - o.num_dst = (size_t)(d_ptr - dst.ptr); - o.num_src = (size_t)(s_ptr - src.ptr); - return o; -} - -#endif // !defined(WUFFS_CONFIG__MODULES) || - // defined(WUFFS_CONFIG__MODULE__BASE) || - // defined(WUFFS_CONFIG__MODULE__BASE__INTCONV) - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \ - defined(WUFFS_CONFIG__MODULE__BASE__MAGIC) - -// ---------------- Magic Numbers - -// ICO doesn't start with a magic identifier. Instead, see if the opening bytes -// are plausibly ICO. -// -// Callers should have already verified that (prefix_data.len >= 2) and the -// first two bytes are 0x00. -// -// See: -// - https://docs.fileformat.com/image/ico/ -static int32_t // -wuffs_base__magic_number_guess_fourcc__maybe_ico( - wuffs_base__slice_u8 prefix_data, - bool prefix_closed) { - // Allow-list for the Image Type field. - if (prefix_data.len < 4) { - return prefix_closed ? 0 : -1; - } else if (prefix_data.ptr[3] != 0) { - return 0; - } - switch (prefix_data.ptr[2]) { - case 0x01: // ICO - case 0x02: // CUR - break; - default: - return 0; - } - - // The Number Of Images should be positive. - if (prefix_data.len < 6) { - return prefix_closed ? 0 : -1; - } else if ((prefix_data.ptr[4] == 0) && (prefix_data.ptr[5] == 0)) { - return 0; - } - - // The first ICONDIRENTRY's fourth byte should be zero. - if (prefix_data.len < 10) { - return prefix_closed ? 0 : -1; - } else if (prefix_data.ptr[9] != 0) { - return 0; - } - - // TODO: have a separate FourCC for CUR? - return 0x49434F20; // 'ICO 'be -} - -// TGA doesn't start with a magic identifier. Instead, see if the opening bytes -// are plausibly TGA. -// -// Callers should have already verified that (prefix_data.len >= 2) and the -// second byte (prefix_data.ptr[1], the Color Map Type byte), is either 0x00 or -// 0x01. -// -// See: -// - https://docs.fileformat.com/image/tga/ -// - https://www.dca.fee.unicamp.br/~martino/disciplinas/ea978/tgaffs.pdf -static int32_t // -wuffs_base__magic_number_guess_fourcc__maybe_tga( - wuffs_base__slice_u8 prefix_data, - bool prefix_closed) { - // Allow-list for the Image Type field. - if (prefix_data.len < 3) { - return prefix_closed ? 0 : -1; - } - switch (prefix_data.ptr[2]) { - case 0x01: - case 0x02: - case 0x03: - case 0x09: - case 0x0A: - case 0x0B: - break; - default: - // TODO: 0x20 and 0x21 are invalid, according to the spec, but are - // apparently unofficial extensions. - return 0; - } - - // Allow-list for the Color Map Entry Size field (if the Color Map Type field - // is non-zero) or else all the Color Map fields should be zero. - if (prefix_data.len < 8) { - return prefix_closed ? 0 : -1; - } else if (prefix_data.ptr[1] != 0x00) { - switch (prefix_data.ptr[7]) { - case 0x0F: - case 0x10: - case 0x18: - case 0x20: - break; - default: - return 0; - } - } else if ((prefix_data.ptr[3] | prefix_data.ptr[4] | prefix_data.ptr[5] | - prefix_data.ptr[6] | prefix_data.ptr[7]) != 0x00) { - return 0; - } - - // Allow-list for the Pixel Depth field. - if (prefix_data.len < 17) { - return prefix_closed ? 0 : -1; - } - switch (prefix_data.ptr[16]) { - case 0x01: - case 0x08: - case 0x0F: - case 0x10: - case 0x18: - case 0x20: - break; - default: - return 0; - } - - return 0x54474120; // 'TGA 'be -} - -WUFFS_BASE__MAYBE_STATIC int32_t // -wuffs_base__magic_number_guess_fourcc(wuffs_base__slice_u8 prefix_data, - bool prefix_closed) { - // This is similar to (but different from): - // - the magic/Magdir tables under https://github.com/file/file - // - the MIME Sniffing algorithm at https://mimesniff.spec.whatwg.org/ - - // table holds the 'magic numbers' (which are actually variable length - // strings). The strings may contain NUL bytes, so the "const char* magic" - // value starts with the length-minus-1 of the 'magic number'. - // - // Keep it sorted by magic[1], then magic[0] descending (prioritizing longer - // matches) and finally by magic[2:]. When multiple entries match, the - // longest one wins. - // - // The fourcc field might be negated, in which case there's further - // specialization (see § below). - static struct { - int32_t fourcc; - const char* magic; - } table[] = { - {-0x30302020, "\x01\x00\x00"}, // '00 'be - {+0x475A2020, "\x02\x1F\x8B\x08"}, // GZ - {+0x5A535444, "\x03\x28\xB5\x2F\xFD"}, // ZSTD - {+0x425A3220, "\x02\x42\x5A\x68"}, // BZ2 - {+0x424D5020, "\x01\x42\x4D"}, // BMP - {+0x47494620, "\x03\x47\x49\x46\x38"}, // GIF - {+0x54494646, "\x03\x49\x49\x2A\x00"}, // TIFF (little-endian) - {+0x54494646, "\x03\x4D\x4D\x00\x2A"}, // TIFF (big-endian) - {+0x4E50424D, "\x02\x50\x35\x0A"}, // NPBM (P5; *.pgm) - {+0x4E50424D, "\x02\x50\x36\x0A"}, // NPBM (P6; *.ppm) - {-0x52494646, "\x03\x52\x49\x46\x46"}, // RIFF - {+0x4E494520, "\x02\x6E\xC3\xAF"}, // NIE - {+0x514F4920, "\x03\x71\x6F\x69\x66"}, // QOI - {+0x5A4C4942, "\x01\x78\x9C"}, // ZLIB - {+0x504E4720, "\x03\x89\x50\x4E\x47"}, // PNG - {+0x4A504547, "\x01\xFF\xD8"}, // JPEG - }; - static const size_t table_len = sizeof(table) / sizeof(table[0]); - - if (prefix_data.len == 0) { - return prefix_closed ? 0 : -1; - } - uint8_t pre_first_byte = prefix_data.ptr[0]; - - int32_t fourcc = 0; - size_t i; - for (i = 0; i < table_len; i++) { - uint8_t mag_first_byte = ((uint8_t)(table[i].magic[1])); - if (pre_first_byte < mag_first_byte) { - break; - } else if (pre_first_byte > mag_first_byte) { - continue; - } - fourcc = table[i].fourcc; - - uint8_t mag_remaining_len = ((uint8_t)(table[i].magic[0])); - if (mag_remaining_len == 0) { - goto match; - } - - const char* mag_remaining_ptr = table[i].magic + 2; - uint8_t* pre_remaining_ptr = prefix_data.ptr + 1; - size_t pre_remaining_len = prefix_data.len - 1; - if (pre_remaining_len < mag_remaining_len) { - if (!memcmp(pre_remaining_ptr, mag_remaining_ptr, pre_remaining_len)) { - return prefix_closed ? 0 : -1; - } - } else { - if (!memcmp(pre_remaining_ptr, mag_remaining_ptr, mag_remaining_len)) { - goto match; - } - } - } - - if (prefix_data.len < 2) { - return prefix_closed ? 0 : -1; - } else if ((prefix_data.ptr[1] == 0x00) || (prefix_data.ptr[1] == 0x01)) { - return wuffs_base__magic_number_guess_fourcc__maybe_tga(prefix_data, - prefix_closed); - } - - return 0; - -match: - // Negative FourCC values (see § above) are further specialized. - if (fourcc < 0) { - fourcc = -fourcc; - - if (fourcc == 0x52494646) { // 'RIFF'be - if (prefix_data.len < 12) { - return prefix_closed ? 0 : -1; - } - uint32_t x = wuffs_base__peek_u32be__no_bounds_check(prefix_data.ptr + 8); - if (x == 0x57454250) { // 'WEBP'be - return 0x57454250; // 'WEBP'be - } - - } else if (fourcc == 0x30302020) { // '00 'be - // Binary data starting with multiple 0x00 NUL bytes is quite common. - // Unfortunately, some file formats also don't start with a magic - // identifier, so we have to use heuristics (where the order matters, the - // same as /usr/bin/file's magic/Magdir tables) as best we can. Maybe - // it's TGA, ICO/CUR, etc. Maybe it's something else. - int32_t tga = wuffs_base__magic_number_guess_fourcc__maybe_tga( - prefix_data, prefix_closed); - if (tga != 0) { - return tga; - } - int32_t ico = wuffs_base__magic_number_guess_fourcc__maybe_ico( - prefix_data, prefix_closed); - if (ico != 0) { - return ico; - } - if (prefix_data.len < 4) { - return prefix_closed ? 0 : -1; - } else if ((prefix_data.ptr[2] != 0x00) && - ((prefix_data.ptr[2] >= 0x80) || - (prefix_data.ptr[3] != 0x00))) { - // Roughly speaking, this could be a non-degenerate (non-0-width and - // non-0-height) WBMP image. - return 0x57424D50; // 'WBMP'be - } - return 0; - } - } - return fourcc; -} - -#endif // !defined(WUFFS_CONFIG__MODULES) || - // defined(WUFFS_CONFIG__MODULE__BASE) || - // defined(WUFFS_CONFIG__MODULE__BASE__MAGIC) - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \ - defined(WUFFS_CONFIG__MODULE__BASE__PIXCONV) - -// ---------------- Pixel Swizzler - -static inline uint32_t // -wuffs_base__swap_u32_argb_abgr(uint32_t u) { - uint32_t o = u & 0xFF00FF00ul; - uint32_t r = u & 0x00FF0000ul; - uint32_t b = u & 0x000000FFul; - return o | (r >> 16) | (b << 16); -} - -static inline uint64_t // -wuffs_base__swap_u64_argb_abgr(uint64_t u) { - uint64_t o = u & 0xFFFF0000FFFF0000ull; - uint64_t r = u & 0x0000FFFF00000000ull; - uint64_t b = u & 0x000000000000FFFFull; - return o | (r >> 32) | (b << 32); -} - -static inline uint32_t // -wuffs_base__color_u64__as__color_u32__swap_u32_argb_abgr(uint64_t c) { - uint32_t a = ((uint32_t)(0xFF & (c >> 56))); - uint32_t r = ((uint32_t)(0xFF & (c >> 40))); - uint32_t g = ((uint32_t)(0xFF & (c >> 24))); - uint32_t b = ((uint32_t)(0xFF & (c >> 8))); - return (a << 24) | (b << 16) | (g << 8) | (r << 0); -} - -// -------- - -WUFFS_BASE__MAYBE_STATIC wuffs_base__color_u32_argb_premul // -wuffs_base__pixel_buffer__color_u32_at(const wuffs_base__pixel_buffer* pb, - uint32_t x, - uint32_t y) { - if (!pb || (x >= pb->pixcfg.private_impl.width) || - (y >= pb->pixcfg.private_impl.height)) { - return 0; - } - - if (wuffs_base__pixel_format__is_planar(&pb->pixcfg.private_impl.pixfmt)) { - // TODO: support planar formats. - return 0; - } - - size_t stride = pb->private_impl.planes[0].stride; - const uint8_t* row = pb->private_impl.planes[0].ptr + (stride * ((size_t)y)); - - switch (pb->pixcfg.private_impl.pixfmt.repr) { - case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL: - case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY: - return wuffs_base__peek_u32le__no_bounds_check(row + (4 * ((size_t)x))); - - case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_PREMUL: - case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY: { - uint8_t* palette = pb->private_impl.planes[3].ptr; - return wuffs_base__peek_u32le__no_bounds_check(palette + - (4 * ((size_t)row[x]))); - } - - // Common formats above. Rarer formats below. - - case WUFFS_BASE__PIXEL_FORMAT__Y: - return 0xFF000000 | (0x00010101 * ((uint32_t)(row[x]))); - case WUFFS_BASE__PIXEL_FORMAT__Y_16LE: - return 0xFF000000 | (0x00010101 * ((uint32_t)(row[(2 * x) + 1]))); - case WUFFS_BASE__PIXEL_FORMAT__Y_16BE: - return 0xFF000000 | (0x00010101 * ((uint32_t)(row[(2 * x) + 0]))); - - case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL: { - uint8_t* palette = pb->private_impl.planes[3].ptr; - return wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul( - wuffs_base__peek_u32le__no_bounds_check(palette + - (4 * ((size_t)row[x])))); - } - - case WUFFS_BASE__PIXEL_FORMAT__BGR_565: - return wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul( - wuffs_base__peek_u16le__no_bounds_check(row + (2 * ((size_t)x)))); - case WUFFS_BASE__PIXEL_FORMAT__BGR: - return 0xFF000000 | - wuffs_base__peek_u24le__no_bounds_check(row + (3 * ((size_t)x))); - case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL: - return wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul( - wuffs_base__peek_u32le__no_bounds_check(row + (4 * ((size_t)x)))); - case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE: - return wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul( - wuffs_base__peek_u64le__no_bounds_check(row + (8 * ((size_t)x)))); - case WUFFS_BASE__PIXEL_FORMAT__BGRX: - return 0xFF000000 | - wuffs_base__peek_u32le__no_bounds_check(row + (4 * ((size_t)x))); - - case WUFFS_BASE__PIXEL_FORMAT__RGB: - return wuffs_base__swap_u32_argb_abgr( - 0xFF000000 | - wuffs_base__peek_u24le__no_bounds_check(row + (3 * ((size_t)x)))); - case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL: - return wuffs_base__swap_u32_argb_abgr( - wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul( - wuffs_base__peek_u32le__no_bounds_check(row + - (4 * ((size_t)x))))); - case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL: - case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY: - return wuffs_base__swap_u32_argb_abgr( - wuffs_base__peek_u32le__no_bounds_check(row + (4 * ((size_t)x)))); - case WUFFS_BASE__PIXEL_FORMAT__RGBX: - return wuffs_base__swap_u32_argb_abgr( - 0xFF000000 | - wuffs_base__peek_u32le__no_bounds_check(row + (4 * ((size_t)x)))); - - default: - // TODO: support more formats. - break; - } - - return 0; -} - -// -------- - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status // -wuffs_base__pixel_buffer__set_color_u32_at( - wuffs_base__pixel_buffer* pb, - uint32_t x, - uint32_t y, - wuffs_base__color_u32_argb_premul color) { - if (!pb) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if ((x >= pb->pixcfg.private_impl.width) || - (y >= pb->pixcfg.private_impl.height)) { - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - - if (wuffs_base__pixel_format__is_planar(&pb->pixcfg.private_impl.pixfmt)) { - // TODO: support planar formats. - return wuffs_base__make_status(wuffs_base__error__unsupported_option); - } - - size_t stride = pb->private_impl.planes[0].stride; - uint8_t* row = pb->private_impl.planes[0].ptr + (stride * ((size_t)y)); - - switch (pb->pixcfg.private_impl.pixfmt.repr) { - case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL: - case WUFFS_BASE__PIXEL_FORMAT__BGRX: - wuffs_base__poke_u32le__no_bounds_check(row + (4 * ((size_t)x)), color); - break; - - // Common formats above. Rarer formats below. - - case WUFFS_BASE__PIXEL_FORMAT__Y: - wuffs_base__poke_u8__no_bounds_check( - row + ((size_t)x), - wuffs_base__color_u32_argb_premul__as__color_u8_gray(color)); - break; - case WUFFS_BASE__PIXEL_FORMAT__Y_16LE: - wuffs_base__poke_u16le__no_bounds_check( - row + (2 * ((size_t)x)), - wuffs_base__color_u32_argb_premul__as__color_u16_gray(color)); - break; - case WUFFS_BASE__PIXEL_FORMAT__Y_16BE: - wuffs_base__poke_u16be__no_bounds_check( - row + (2 * ((size_t)x)), - wuffs_base__color_u32_argb_premul__as__color_u16_gray(color)); - break; - - case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL: - case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_PREMUL: - case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY: - wuffs_base__poke_u8__no_bounds_check( - row + ((size_t)x), wuffs_base__pixel_palette__closest_element( - wuffs_base__pixel_buffer__palette(pb), - pb->pixcfg.private_impl.pixfmt, color)); - break; - - case WUFFS_BASE__PIXEL_FORMAT__BGR_565: - wuffs_base__poke_u16le__no_bounds_check( - row + (2 * ((size_t)x)), - wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(color)); - break; - case WUFFS_BASE__PIXEL_FORMAT__BGR: - wuffs_base__poke_u24le__no_bounds_check(row + (3 * ((size_t)x)), color); - break; - case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL: - wuffs_base__poke_u32le__no_bounds_check( - row + (4 * ((size_t)x)), - wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul( - color)); - break; - case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE: - wuffs_base__poke_u64le__no_bounds_check( - row + (8 * ((size_t)x)), - wuffs_base__color_u32_argb_premul__as__color_u64_argb_nonpremul( - color)); - break; - - case WUFFS_BASE__PIXEL_FORMAT__RGB: - wuffs_base__poke_u24le__no_bounds_check( - row + (3 * ((size_t)x)), wuffs_base__swap_u32_argb_abgr(color)); - break; - case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL: - wuffs_base__poke_u32le__no_bounds_check( - row + (4 * ((size_t)x)), - wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul( - wuffs_base__swap_u32_argb_abgr(color))); - break; - case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL: - case WUFFS_BASE__PIXEL_FORMAT__RGBX: - wuffs_base__poke_u32le__no_bounds_check( - row + (4 * ((size_t)x)), wuffs_base__swap_u32_argb_abgr(color)); - break; - - default: - // TODO: support more formats. - return wuffs_base__make_status(wuffs_base__error__unsupported_option); - } - - return wuffs_base__make_status(NULL); -} - -// -------- - -static inline void // -wuffs_base__pixel_buffer__set_color_u32_fill_rect__xx( - wuffs_base__pixel_buffer* pb, - wuffs_base__rect_ie_u32 rect, - uint16_t color) { - size_t stride = pb->private_impl.planes[0].stride; - uint32_t width = wuffs_base__rect_ie_u32__width(&rect); - if ((stride == (2 * ((uint64_t)width))) && (rect.min_incl_x == 0)) { - uint8_t* ptr = - pb->private_impl.planes[0].ptr + (stride * ((size_t)rect.min_incl_y)); - uint32_t height = wuffs_base__rect_ie_u32__height(&rect); - size_t n; - for (n = ((size_t)width) * ((size_t)height); n > 0; n--) { - wuffs_base__poke_u16le__no_bounds_check(ptr, color); - ptr += 2; - } - return; - } - - uint32_t y; - for (y = rect.min_incl_y; y < rect.max_excl_y; y++) { - uint8_t* ptr = pb->private_impl.planes[0].ptr + (stride * ((size_t)y)) + - (2 * ((size_t)rect.min_incl_x)); - uint32_t n; - for (n = width; n > 0; n--) { - wuffs_base__poke_u16le__no_bounds_check(ptr, color); - ptr += 2; - } - } -} - -static inline void // -wuffs_base__pixel_buffer__set_color_u32_fill_rect__xxx( - wuffs_base__pixel_buffer* pb, - wuffs_base__rect_ie_u32 rect, - uint32_t color) { - size_t stride = pb->private_impl.planes[0].stride; - uint32_t width = wuffs_base__rect_ie_u32__width(&rect); - if ((stride == (3 * ((uint64_t)width))) && (rect.min_incl_x == 0)) { - uint8_t* ptr = - pb->private_impl.planes[0].ptr + (stride * ((size_t)rect.min_incl_y)); - uint32_t height = wuffs_base__rect_ie_u32__height(&rect); - size_t n; - for (n = ((size_t)width) * ((size_t)height); n > 0; n--) { - wuffs_base__poke_u24le__no_bounds_check(ptr, color); - ptr += 3; - } - return; - } - - uint32_t y; - for (y = rect.min_incl_y; y < rect.max_excl_y; y++) { - uint8_t* ptr = pb->private_impl.planes[0].ptr + (stride * ((size_t)y)) + - (3 * ((size_t)rect.min_incl_x)); - uint32_t n; - for (n = width; n > 0; n--) { - wuffs_base__poke_u24le__no_bounds_check(ptr, color); - ptr += 3; - } - } -} - -static inline void // -wuffs_base__pixel_buffer__set_color_u32_fill_rect__xxxx( - wuffs_base__pixel_buffer* pb, - wuffs_base__rect_ie_u32 rect, - uint32_t color) { - size_t stride = pb->private_impl.planes[0].stride; - uint32_t width = wuffs_base__rect_ie_u32__width(&rect); - if ((stride == (4 * ((uint64_t)width))) && (rect.min_incl_x == 0)) { - uint8_t* ptr = - pb->private_impl.planes[0].ptr + (stride * ((size_t)rect.min_incl_y)); - uint32_t height = wuffs_base__rect_ie_u32__height(&rect); - size_t n; - for (n = ((size_t)width) * ((size_t)height); n > 0; n--) { - wuffs_base__poke_u32le__no_bounds_check(ptr, color); - ptr += 4; - } - return; - } - - uint32_t y; - for (y = rect.min_incl_y; y < rect.max_excl_y; y++) { - uint8_t* ptr = pb->private_impl.planes[0].ptr + (stride * ((size_t)y)) + - (4 * ((size_t)rect.min_incl_x)); - uint32_t n; - for (n = width; n > 0; n--) { - wuffs_base__poke_u32le__no_bounds_check(ptr, color); - ptr += 4; - } - } -} - -static inline void // -wuffs_base__pixel_buffer__set_color_u32_fill_rect__xxxxxxxx( - wuffs_base__pixel_buffer* pb, - wuffs_base__rect_ie_u32 rect, - uint64_t color) { - size_t stride = pb->private_impl.planes[0].stride; - uint32_t width = wuffs_base__rect_ie_u32__width(&rect); - if ((stride == (8 * ((uint64_t)width))) && (rect.min_incl_x == 0)) { - uint8_t* ptr = - pb->private_impl.planes[0].ptr + (stride * ((size_t)rect.min_incl_y)); - uint32_t height = wuffs_base__rect_ie_u32__height(&rect); - size_t n; - for (n = ((size_t)width) * ((size_t)height); n > 0; n--) { - wuffs_base__poke_u64le__no_bounds_check(ptr, color); - ptr += 8; - } - return; - } - - uint32_t y; - for (y = rect.min_incl_y; y < rect.max_excl_y; y++) { - uint8_t* ptr = pb->private_impl.planes[0].ptr + (stride * ((size_t)y)) + - (8 * ((size_t)rect.min_incl_x)); - uint32_t n; - for (n = width; n > 0; n--) { - wuffs_base__poke_u64le__no_bounds_check(ptr, color); - ptr += 8; - } - } -} - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status // -wuffs_base__pixel_buffer__set_color_u32_fill_rect( - wuffs_base__pixel_buffer* pb, - wuffs_base__rect_ie_u32 rect, - wuffs_base__color_u32_argb_premul color) { - if (!pb) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } else if (wuffs_base__rect_ie_u32__is_empty(&rect)) { - return wuffs_base__make_status(NULL); - } - wuffs_base__rect_ie_u32 bounds = - wuffs_base__pixel_config__bounds(&pb->pixcfg); - if (!wuffs_base__rect_ie_u32__contains_rect(&bounds, rect)) { - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - - if (wuffs_base__pixel_format__is_planar(&pb->pixcfg.private_impl.pixfmt)) { - // TODO: support planar formats. - return wuffs_base__make_status(wuffs_base__error__unsupported_option); - } - - switch (pb->pixcfg.private_impl.pixfmt.repr) { - case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL: - case WUFFS_BASE__PIXEL_FORMAT__BGRX: - wuffs_base__pixel_buffer__set_color_u32_fill_rect__xxxx(pb, rect, color); - return wuffs_base__make_status(NULL); - - // Common formats above. Rarer formats below. - - case WUFFS_BASE__PIXEL_FORMAT__BGR_565: - wuffs_base__pixel_buffer__set_color_u32_fill_rect__xx( - pb, rect, - wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565(color)); - return wuffs_base__make_status(NULL); - - case WUFFS_BASE__PIXEL_FORMAT__BGR: - wuffs_base__pixel_buffer__set_color_u32_fill_rect__xxx(pb, rect, color); - return wuffs_base__make_status(NULL); - - case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL: - wuffs_base__pixel_buffer__set_color_u32_fill_rect__xxxx( - pb, rect, - wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul( - color)); - return wuffs_base__make_status(NULL); - - case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE: - wuffs_base__pixel_buffer__set_color_u32_fill_rect__xxxxxxxx( - pb, rect, - wuffs_base__color_u32_argb_premul__as__color_u64_argb_nonpremul( - color)); - return wuffs_base__make_status(NULL); - - case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL: - wuffs_base__pixel_buffer__set_color_u32_fill_rect__xxxx( - pb, rect, - wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul( - wuffs_base__swap_u32_argb_abgr(color))); - return wuffs_base__make_status(NULL); - - case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL: - case WUFFS_BASE__PIXEL_FORMAT__RGBX: - wuffs_base__pixel_buffer__set_color_u32_fill_rect__xxxx( - pb, rect, wuffs_base__swap_u32_argb_abgr(color)); - return wuffs_base__make_status(NULL); - } - - uint32_t y; - for (y = rect.min_incl_y; y < rect.max_excl_y; y++) { - uint32_t x; - for (x = rect.min_incl_x; x < rect.max_excl_x; x++) { - wuffs_base__pixel_buffer__set_color_u32_at(pb, x, y, color); - } - } - return wuffs_base__make_status(NULL); -} - -// -------- - -WUFFS_BASE__MAYBE_STATIC uint8_t // -wuffs_base__pixel_palette__closest_element( - wuffs_base__slice_u8 palette_slice, - wuffs_base__pixel_format palette_format, - wuffs_base__color_u32_argb_premul c) { - size_t n = palette_slice.len / 4; - if (n > (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) { - n = (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4); - } - size_t best_index = 0; - uint64_t best_score = 0xFFFFFFFFFFFFFFFF; - - // Work in 16-bit color. - uint32_t ca = 0x101 * (0xFF & (c >> 24)); - uint32_t cr = 0x101 * (0xFF & (c >> 16)); - uint32_t cg = 0x101 * (0xFF & (c >> 8)); - uint32_t cb = 0x101 * (0xFF & (c >> 0)); - - switch (palette_format.repr) { - case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL: - case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_PREMUL: - case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY: { - bool nonpremul = palette_format.repr == - WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL; - - size_t i; - for (i = 0; i < n; i++) { - // Work in 16-bit color. - uint32_t pb = 0x101 * ((uint32_t)(palette_slice.ptr[(4 * i) + 0])); - uint32_t pg = 0x101 * ((uint32_t)(palette_slice.ptr[(4 * i) + 1])); - uint32_t pr = 0x101 * ((uint32_t)(palette_slice.ptr[(4 * i) + 2])); - uint32_t pa = 0x101 * ((uint32_t)(palette_slice.ptr[(4 * i) + 3])); - - // Convert to premultiplied alpha. - if (nonpremul && (pa != 0xFFFF)) { - pb = (pb * pa) / 0xFFFF; - pg = (pg * pa) / 0xFFFF; - pr = (pr * pa) / 0xFFFF; - } - - // These deltas are conceptually int32_t (signed) but after squaring, - // it's equivalent to work in uint32_t (unsigned). - pb -= cb; - pg -= cg; - pr -= cr; - pa -= ca; - uint64_t score = ((uint64_t)(pb * pb)) + ((uint64_t)(pg * pg)) + - ((uint64_t)(pr * pr)) + ((uint64_t)(pa * pa)); - if (best_score > score) { - best_score = score; - best_index = i; - } - } - break; - } - } - - return (uint8_t)best_index; -} - -// -------- - -static inline uint32_t // -wuffs_base__composite_nonpremul_nonpremul_u32_axxx(uint32_t dst_nonpremul, - uint32_t src_nonpremul) { - // Extract 16-bit color components. - // - // If the destination is transparent then SRC_OVER is equivalent to SRC: just - // return src_nonpremul. This isn't just an optimization (skipping the rest - // of the function's computation). It also preserves the nonpremul - // distinction between e.g. transparent red and transparent blue that would - // otherwise be lost by converting from nonpremul to premul and back. - uint32_t da = 0x101 * (0xFF & (dst_nonpremul >> 24)); - if (da == 0) { - return src_nonpremul; - } - uint32_t dr = 0x101 * (0xFF & (dst_nonpremul >> 16)); - uint32_t dg = 0x101 * (0xFF & (dst_nonpremul >> 8)); - uint32_t db = 0x101 * (0xFF & (dst_nonpremul >> 0)); - uint32_t sa = 0x101 * (0xFF & (src_nonpremul >> 24)); - uint32_t sr = 0x101 * (0xFF & (src_nonpremul >> 16)); - uint32_t sg = 0x101 * (0xFF & (src_nonpremul >> 8)); - uint32_t sb = 0x101 * (0xFF & (src_nonpremul >> 0)); - - // Convert dst from nonpremul to premul. - dr = (dr * da) / 0xFFFF; - dg = (dg * da) / 0xFFFF; - db = (db * da) / 0xFFFF; - - // Calculate the inverse of the src-alpha: how much of the dst to keep. - uint32_t ia = 0xFFFF - sa; - - // Composite src (nonpremul) over dst (premul). - da = sa + ((da * ia) / 0xFFFF); - dr = ((sr * sa) + (dr * ia)) / 0xFFFF; - dg = ((sg * sa) + (dg * ia)) / 0xFFFF; - db = ((sb * sa) + (db * ia)) / 0xFFFF; - - // Convert dst from premul to nonpremul. - if (da != 0) { - dr = (dr * 0xFFFF) / da; - dg = (dg * 0xFFFF) / da; - db = (db * 0xFFFF) / da; - } - - // Convert from 16-bit color to 8-bit color. - da >>= 8; - dr >>= 8; - dg >>= 8; - db >>= 8; - - // Combine components. - return (db << 0) | (dg << 8) | (dr << 16) | (da << 24); -} - -static inline uint64_t // -wuffs_base__composite_nonpremul_nonpremul_u64_axxx(uint64_t dst_nonpremul, - uint64_t src_nonpremul) { - // Extract components. - // - // If the destination is transparent then SRC_OVER is equivalent to SRC: just - // return src_nonpremul. This isn't just an optimization (skipping the rest - // of the function's computation). It also preserves the nonpremul - // distinction between e.g. transparent red and transparent blue that would - // otherwise be lost by converting from nonpremul to premul and back. - uint64_t da = 0xFFFF & (dst_nonpremul >> 48); - if (da == 0) { - return src_nonpremul; - } - uint64_t dr = 0xFFFF & (dst_nonpremul >> 32); - uint64_t dg = 0xFFFF & (dst_nonpremul >> 16); - uint64_t db = 0xFFFF & (dst_nonpremul >> 0); - uint64_t sa = 0xFFFF & (src_nonpremul >> 48); - uint64_t sr = 0xFFFF & (src_nonpremul >> 32); - uint64_t sg = 0xFFFF & (src_nonpremul >> 16); - uint64_t sb = 0xFFFF & (src_nonpremul >> 0); - - // Convert dst from nonpremul to premul. - dr = (dr * da) / 0xFFFF; - dg = (dg * da) / 0xFFFF; - db = (db * da) / 0xFFFF; - - // Calculate the inverse of the src-alpha: how much of the dst to keep. - uint64_t ia = 0xFFFF - sa; - - // Composite src (nonpremul) over dst (premul). - da = sa + ((da * ia) / 0xFFFF); - dr = ((sr * sa) + (dr * ia)) / 0xFFFF; - dg = ((sg * sa) + (dg * ia)) / 0xFFFF; - db = ((sb * sa) + (db * ia)) / 0xFFFF; - - // Convert dst from premul to nonpremul. - if (da != 0) { - dr = (dr * 0xFFFF) / da; - dg = (dg * 0xFFFF) / da; - db = (db * 0xFFFF) / da; - } - - // Combine components. - return (db << 0) | (dg << 16) | (dr << 32) | (da << 48); -} - -static inline uint32_t // -wuffs_base__composite_nonpremul_premul_u32_axxx(uint32_t dst_nonpremul, - uint32_t src_premul) { - // Extract 16-bit color components. - uint32_t da = 0x101 * (0xFF & (dst_nonpremul >> 24)); - uint32_t dr = 0x101 * (0xFF & (dst_nonpremul >> 16)); - uint32_t dg = 0x101 * (0xFF & (dst_nonpremul >> 8)); - uint32_t db = 0x101 * (0xFF & (dst_nonpremul >> 0)); - uint32_t sa = 0x101 * (0xFF & (src_premul >> 24)); - uint32_t sr = 0x101 * (0xFF & (src_premul >> 16)); - uint32_t sg = 0x101 * (0xFF & (src_premul >> 8)); - uint32_t sb = 0x101 * (0xFF & (src_premul >> 0)); - - // Convert dst from nonpremul to premul. - dr = (dr * da) / 0xFFFF; - dg = (dg * da) / 0xFFFF; - db = (db * da) / 0xFFFF; - - // Calculate the inverse of the src-alpha: how much of the dst to keep. - uint32_t ia = 0xFFFF - sa; - - // Composite src (premul) over dst (premul). - da = sa + ((da * ia) / 0xFFFF); - dr = sr + ((dr * ia) / 0xFFFF); - dg = sg + ((dg * ia) / 0xFFFF); - db = sb + ((db * ia) / 0xFFFF); - - // Convert dst from premul to nonpremul. - if (da != 0) { - dr = (dr * 0xFFFF) / da; - dg = (dg * 0xFFFF) / da; - db = (db * 0xFFFF) / da; - } - - // Convert from 16-bit color to 8-bit color. - da >>= 8; - dr >>= 8; - dg >>= 8; - db >>= 8; - - // Combine components. - return (db << 0) | (dg << 8) | (dr << 16) | (da << 24); -} - -static inline uint64_t // -wuffs_base__composite_nonpremul_premul_u64_axxx(uint64_t dst_nonpremul, - uint64_t src_premul) { - // Extract components. - uint64_t da = 0xFFFF & (dst_nonpremul >> 48); - uint64_t dr = 0xFFFF & (dst_nonpremul >> 32); - uint64_t dg = 0xFFFF & (dst_nonpremul >> 16); - uint64_t db = 0xFFFF & (dst_nonpremul >> 0); - uint64_t sa = 0xFFFF & (src_premul >> 48); - uint64_t sr = 0xFFFF & (src_premul >> 32); - uint64_t sg = 0xFFFF & (src_premul >> 16); - uint64_t sb = 0xFFFF & (src_premul >> 0); - - // Convert dst from nonpremul to premul. - dr = (dr * da) / 0xFFFF; - dg = (dg * da) / 0xFFFF; - db = (db * da) / 0xFFFF; - - // Calculate the inverse of the src-alpha: how much of the dst to keep. - uint64_t ia = 0xFFFF - sa; - - // Composite src (premul) over dst (premul). - da = sa + ((da * ia) / 0xFFFF); - dr = sr + ((dr * ia) / 0xFFFF); - dg = sg + ((dg * ia) / 0xFFFF); - db = sb + ((db * ia) / 0xFFFF); - - // Convert dst from premul to nonpremul. - if (da != 0) { - dr = (dr * 0xFFFF) / da; - dg = (dg * 0xFFFF) / da; - db = (db * 0xFFFF) / da; - } - - // Combine components. - return (db << 0) | (dg << 16) | (dr << 32) | (da << 48); -} - -static inline uint32_t // -wuffs_base__composite_premul_nonpremul_u32_axxx(uint32_t dst_premul, - uint32_t src_nonpremul) { - // Extract 16-bit color components. - uint32_t da = 0x101 * (0xFF & (dst_premul >> 24)); - uint32_t dr = 0x101 * (0xFF & (dst_premul >> 16)); - uint32_t dg = 0x101 * (0xFF & (dst_premul >> 8)); - uint32_t db = 0x101 * (0xFF & (dst_premul >> 0)); - uint32_t sa = 0x101 * (0xFF & (src_nonpremul >> 24)); - uint32_t sr = 0x101 * (0xFF & (src_nonpremul >> 16)); - uint32_t sg = 0x101 * (0xFF & (src_nonpremul >> 8)); - uint32_t sb = 0x101 * (0xFF & (src_nonpremul >> 0)); - - // Calculate the inverse of the src-alpha: how much of the dst to keep. - uint32_t ia = 0xFFFF - sa; - - // Composite src (nonpremul) over dst (premul). - da = sa + ((da * ia) / 0xFFFF); - dr = ((sr * sa) + (dr * ia)) / 0xFFFF; - dg = ((sg * sa) + (dg * ia)) / 0xFFFF; - db = ((sb * sa) + (db * ia)) / 0xFFFF; - - // Convert from 16-bit color to 8-bit color. - da >>= 8; - dr >>= 8; - dg >>= 8; - db >>= 8; - - // Combine components. - return (db << 0) | (dg << 8) | (dr << 16) | (da << 24); -} - -static inline uint64_t // -wuffs_base__composite_premul_nonpremul_u64_axxx(uint64_t dst_premul, - uint64_t src_nonpremul) { - // Extract components. - uint64_t da = 0xFFFF & (dst_premul >> 48); - uint64_t dr = 0xFFFF & (dst_premul >> 32); - uint64_t dg = 0xFFFF & (dst_premul >> 16); - uint64_t db = 0xFFFF & (dst_premul >> 0); - uint64_t sa = 0xFFFF & (src_nonpremul >> 48); - uint64_t sr = 0xFFFF & (src_nonpremul >> 32); - uint64_t sg = 0xFFFF & (src_nonpremul >> 16); - uint64_t sb = 0xFFFF & (src_nonpremul >> 0); - - // Calculate the inverse of the src-alpha: how much of the dst to keep. - uint64_t ia = 0xFFFF - sa; - - // Composite src (nonpremul) over dst (premul). - da = sa + ((da * ia) / 0xFFFF); - dr = ((sr * sa) + (dr * ia)) / 0xFFFF; - dg = ((sg * sa) + (dg * ia)) / 0xFFFF; - db = ((sb * sa) + (db * ia)) / 0xFFFF; - - // Combine components. - return (db << 0) | (dg << 16) | (dr << 32) | (da << 48); -} - -static inline uint32_t // -wuffs_base__composite_premul_premul_u32_axxx(uint32_t dst_premul, - uint32_t src_premul) { - // Extract 16-bit color components. - uint32_t da = 0x101 * (0xFF & (dst_premul >> 24)); - uint32_t dr = 0x101 * (0xFF & (dst_premul >> 16)); - uint32_t dg = 0x101 * (0xFF & (dst_premul >> 8)); - uint32_t db = 0x101 * (0xFF & (dst_premul >> 0)); - uint32_t sa = 0x101 * (0xFF & (src_premul >> 24)); - uint32_t sr = 0x101 * (0xFF & (src_premul >> 16)); - uint32_t sg = 0x101 * (0xFF & (src_premul >> 8)); - uint32_t sb = 0x101 * (0xFF & (src_premul >> 0)); - - // Calculate the inverse of the src-alpha: how much of the dst to keep. - uint32_t ia = 0xFFFF - sa; - - // Composite src (premul) over dst (premul). - da = sa + ((da * ia) / 0xFFFF); - dr = sr + ((dr * ia) / 0xFFFF); - dg = sg + ((dg * ia) / 0xFFFF); - db = sb + ((db * ia) / 0xFFFF); - - // Convert from 16-bit color to 8-bit color. - da >>= 8; - dr >>= 8; - dg >>= 8; - db >>= 8; - - // Combine components. - return (db << 0) | (dg << 8) | (dr << 16) | (da << 24); -} - -// -------- - -static uint64_t // -wuffs_base__pixel_swizzler__squash_align4_bgr_565_8888(uint8_t* dst_ptr, - size_t dst_len, - const uint8_t* src_ptr, - size_t src_len, - bool nonpremul) { - size_t len = (dst_len < src_len ? dst_len : src_len) / 4; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - - size_t n = len; - while (n--) { - uint32_t argb = wuffs_base__peek_u32le__no_bounds_check(s); - if (nonpremul) { - argb = - wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(argb); - } - uint32_t b5 = 0x1F & (argb >> (8 - 5)); - uint32_t g6 = 0x3F & (argb >> (16 - 6)); - uint32_t r5 = 0x1F & (argb >> (24 - 5)); - uint32_t alpha = argb & 0xFF000000; - wuffs_base__poke_u32le__no_bounds_check( - d, alpha | (r5 << 11) | (g6 << 5) | (b5 << 0)); - s += 4; - d += 4; - } - return len; -} - -// -------- - -static uint64_t // -wuffs_base__pixel_swizzler__swap_rgb_bgr(uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t len = (dst_len < src_len ? dst_len : src_len) / 3; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - - size_t n = len; - while (n--) { - uint8_t s0 = s[0]; - uint8_t s1 = s[1]; - uint8_t s2 = s[2]; - d[0] = s2; - d[1] = s1; - d[2] = s0; - s += 3; - d += 3; - } - return len; -} - -// ‼ WUFFS MULTI-FILE SECTION +x86_sse42 -#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) -WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2") -static uint64_t // -wuffs_base__pixel_swizzler__swap_rgbx_bgrx__sse42(uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t len = (dst_len < src_len ? dst_len : src_len) / 4; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - __m128i shuffle = _mm_set_epi8(+0x0F, +0x0C, +0x0D, +0x0E, // - +0x0B, +0x08, +0x09, +0x0A, // - +0x07, +0x04, +0x05, +0x06, // - +0x03, +0x00, +0x01, +0x02); - - while (n >= 4) { - __m128i x; - x = _mm_lddqu_si128((const __m128i*)(const void*)s); - x = _mm_shuffle_epi8(x, shuffle); - _mm_storeu_si128((__m128i*)(void*)d, x); - - s += 4 * 4; - d += 4 * 4; - n -= 4; - } - - while (n--) { - uint8_t s0 = s[0]; - uint8_t s1 = s[1]; - uint8_t s2 = s[2]; - uint8_t s3 = s[3]; - d[0] = s2; - d[1] = s1; - d[2] = s0; - d[3] = s3; - s += 4; - d += 4; - } - return len; -} -#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) -// ‼ WUFFS MULTI-FILE SECTION -x86_sse42 - -static uint64_t // -wuffs_base__pixel_swizzler__swap_rgbx_bgrx(uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t len = (dst_len < src_len ? dst_len : src_len) / 4; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - - size_t n = len; - while (n--) { - uint8_t s0 = s[0]; - uint8_t s1 = s[1]; - uint8_t s2 = s[2]; - uint8_t s3 = s[3]; - d[0] = s2; - d[1] = s1; - d[2] = s0; - d[3] = s3; - s += 4; - d += 4; - } - return len; -} - -// -------- - -static uint64_t // -wuffs_base__pixel_swizzler__copy_1_1(uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t len = (dst_len < src_len) ? dst_len : src_len; - if (len > 0) { - memmove(dst_ptr, src_ptr, len); - } - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__copy_2_2(uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len2 = dst_len / 2; - size_t src_len2 = src_len / 2; - size_t len = (dst_len2 < src_len2) ? dst_len2 : src_len2; - if (len > 0) { - memmove(dst_ptr, src_ptr, len * 2); - } - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__copy_3_3(uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len3 = dst_len / 3; - size_t src_len3 = src_len / 3; - size_t len = (dst_len3 < src_len3) ? dst_len3 : src_len3; - if (len > 0) { - memmove(dst_ptr, src_ptr, len * 3); - } - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__copy_4_4(uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len4 = dst_len / 4; - size_t src_len4 = src_len / 4; - size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4; - if (len > 0) { - memmove(dst_ptr, src_ptr, len * 4); - } - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__copy_8_8(uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len8 = dst_len / 8; - size_t src_len8 = src_len / 8; - size_t len = (dst_len8 < src_len8) ? dst_len8 : src_len8; - if (len > 0) { - memmove(dst_ptr, src_ptr, len * 8); - } - return len; -} - -// -------- - -static uint64_t // -wuffs_base__pixel_swizzler__bgr_565__bgr(uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len2 = dst_len / 2; - size_t src_len3 = src_len / 3; - size_t len = (dst_len2 < src_len3) ? dst_len2 : src_len3; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - // TODO: unroll. - - while (n >= 1) { - uint32_t b5 = s[0] >> 3; - uint32_t g6 = s[1] >> 2; - uint32_t r5 = s[2] >> 3; - uint32_t rgb_565 = (r5 << 11) | (g6 << 5) | (b5 << 0); - wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)rgb_565); - - s += 1 * 3; - d += 1 * 2; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgr_565__bgrx(uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len2 = dst_len / 2; - size_t src_len4 = src_len / 4; - size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - // TODO: unroll. - - while (n >= 1) { - uint32_t b5 = s[0] >> 3; - uint32_t g6 = s[1] >> 2; - uint32_t r5 = s[2] >> 3; - uint32_t rgb_565 = (r5 << 11) | (g6 << 5) | (b5 << 0); - wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)rgb_565); - - s += 1 * 4; - d += 1 * 2; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul__src( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len2 = dst_len / 2; - size_t src_len4 = src_len / 4; - size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - // TODO: unroll. - - while (n >= 1) { - wuffs_base__poke_u16le__no_bounds_check( - d + (0 * 2), - wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565( - wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul( - wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))))); - - s += 1 * 4; - d += 1 * 2; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul_4x16le__src( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len2 = dst_len / 2; - size_t src_len8 = src_len / 8; - size_t len = (dst_len2 < src_len8) ? dst_len2 : src_len8; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - // TODO: unroll. - - while (n >= 1) { - wuffs_base__poke_u16le__no_bounds_check( - d + (0 * 2), - wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565( - wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul( - wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8))))); - - s += 1 * 8; - d += 1 * 2; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul__src_over( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len2 = dst_len / 2; - size_t src_len4 = src_len / 4; - size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - // TODO: unroll. - - while (n >= 1) { - // Extract 16-bit color components. - uint32_t sa = 0x101 * ((uint32_t)s[3]); - uint32_t sr = 0x101 * ((uint32_t)s[2]); - uint32_t sg = 0x101 * ((uint32_t)s[1]); - uint32_t sb = 0x101 * ((uint32_t)s[0]); - - // Convert from 565 color to 16-bit color. - uint32_t old_rgb_565 = wuffs_base__peek_u16le__no_bounds_check(d + (0 * 2)); - uint32_t old_r5 = 0x1F & (old_rgb_565 >> 11); - uint32_t dr = (0x8421 * old_r5) >> 4; - uint32_t old_g6 = 0x3F & (old_rgb_565 >> 5); - uint32_t dg = (0x1041 * old_g6) >> 2; - uint32_t old_b5 = 0x1F & (old_rgb_565 >> 0); - uint32_t db = (0x8421 * old_b5) >> 4; - - // Calculate the inverse of the src-alpha: how much of the dst to keep. - uint32_t ia = 0xFFFF - sa; - - // Composite src (nonpremul) over dst (premul). - dr = ((sr * sa) + (dr * ia)) / 0xFFFF; - dg = ((sg * sa) + (dg * ia)) / 0xFFFF; - db = ((sb * sa) + (db * ia)) / 0xFFFF; - - // Convert from 16-bit color to 565 color and combine the components. - uint32_t new_r5 = 0x1F & (dr >> 11); - uint32_t new_g6 = 0x3F & (dg >> 10); - uint32_t new_b5 = 0x1F & (db >> 11); - uint32_t new_rgb_565 = (new_r5 << 11) | (new_g6 << 5) | (new_b5 << 0); - wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)new_rgb_565); - - s += 1 * 4; - d += 1 * 2; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul_4x16le__src_over( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len2 = dst_len / 2; - size_t src_len8 = src_len / 8; - size_t len = (dst_len2 < src_len8) ? dst_len2 : src_len8; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - // TODO: unroll. - - while (n >= 1) { - // Extract 16-bit color components. - uint32_t sa = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 6)); - uint32_t sr = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 4)); - uint32_t sg = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 2)); - uint32_t sb = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 0)); - - // Convert from 565 color to 16-bit color. - uint32_t old_rgb_565 = wuffs_base__peek_u16le__no_bounds_check(d + (0 * 2)); - uint32_t old_r5 = 0x1F & (old_rgb_565 >> 11); - uint32_t dr = (0x8421 * old_r5) >> 4; - uint32_t old_g6 = 0x3F & (old_rgb_565 >> 5); - uint32_t dg = (0x1041 * old_g6) >> 2; - uint32_t old_b5 = 0x1F & (old_rgb_565 >> 0); - uint32_t db = (0x8421 * old_b5) >> 4; - - // Calculate the inverse of the src-alpha: how much of the dst to keep. - uint32_t ia = 0xFFFF - sa; - - // Composite src (nonpremul) over dst (premul). - dr = ((sr * sa) + (dr * ia)) / 0xFFFF; - dg = ((sg * sa) + (dg * ia)) / 0xFFFF; - db = ((sb * sa) + (db * ia)) / 0xFFFF; - - // Convert from 16-bit color to 565 color and combine the components. - uint32_t new_r5 = 0x1F & (dr >> 11); - uint32_t new_g6 = 0x3F & (dg >> 10); - uint32_t new_b5 = 0x1F & (db >> 11); - uint32_t new_rgb_565 = (new_r5 << 11) | (new_g6 << 5) | (new_b5 << 0); - wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)new_rgb_565); - - s += 1 * 8; - d += 1 * 2; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgr_565__bgra_premul__src(uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len2 = dst_len / 2; - size_t src_len4 = src_len / 4; - size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - // TODO: unroll. - - while (n >= 1) { - wuffs_base__poke_u16le__no_bounds_check( - d + (0 * 2), wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565( - wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)))); - - s += 1 * 4; - d += 1 * 2; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgr_565__bgra_premul__src_over( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len2 = dst_len / 2; - size_t src_len4 = src_len / 4; - size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - // TODO: unroll. - - while (n >= 1) { - // Extract 16-bit color components. - uint32_t sa = 0x101 * ((uint32_t)s[3]); - uint32_t sr = 0x101 * ((uint32_t)s[2]); - uint32_t sg = 0x101 * ((uint32_t)s[1]); - uint32_t sb = 0x101 * ((uint32_t)s[0]); - - // Convert from 565 color to 16-bit color. - uint32_t old_rgb_565 = wuffs_base__peek_u16le__no_bounds_check(d + (0 * 2)); - uint32_t old_r5 = 0x1F & (old_rgb_565 >> 11); - uint32_t dr = (0x8421 * old_r5) >> 4; - uint32_t old_g6 = 0x3F & (old_rgb_565 >> 5); - uint32_t dg = (0x1041 * old_g6) >> 2; - uint32_t old_b5 = 0x1F & (old_rgb_565 >> 0); - uint32_t db = (0x8421 * old_b5) >> 4; - - // Calculate the inverse of the src-alpha: how much of the dst to keep. - uint32_t ia = 0xFFFF - sa; - - // Composite src (premul) over dst (premul). - dr = sr + ((dr * ia) / 0xFFFF); - dg = sg + ((dg * ia) / 0xFFFF); - db = sb + ((db * ia) / 0xFFFF); - - // Convert from 16-bit color to 565 color and combine the components. - uint32_t new_r5 = 0x1F & (dr >> 11); - uint32_t new_g6 = 0x3F & (dg >> 10); - uint32_t new_b5 = 0x1F & (db >> 11); - uint32_t new_rgb_565 = (new_r5 << 11) | (new_g6 << 5) | (new_b5 << 0); - wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)new_rgb_565); - - s += 1 * 4; - d += 1 * 2; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgr_565__rgb(uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len2 = dst_len / 2; - size_t src_len3 = src_len / 3; - size_t len = (dst_len2 < src_len3) ? dst_len2 : src_len3; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - // TODO: unroll. - - while (n >= 1) { - uint32_t r5 = s[0] >> 3; - uint32_t g6 = s[1] >> 2; - uint32_t b5 = s[2] >> 3; - uint32_t rgb_565 = (r5 << 11) | (g6 << 5) | (b5 << 0); - wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)rgb_565); - - s += 1 * 3; - d += 1 * 2; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgr_565__rgba_nonpremul__src( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len2 = dst_len / 2; - size_t src_len4 = src_len / 4; - size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - // TODO: unroll. - - while (n >= 1) { - wuffs_base__poke_u16le__no_bounds_check( - d + (0 * 2), - wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565( - wuffs_base__swap_u32_argb_abgr( - wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul( - wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)))))); - - s += 1 * 4; - d += 1 * 2; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgr_565__rgba_nonpremul__src_over( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len2 = dst_len / 2; - size_t src_len4 = src_len / 4; - size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - // TODO: unroll. - - while (n >= 1) { - // Extract 16-bit color components. - uint32_t sa = 0x101 * ((uint32_t)s[3]); - uint32_t sb = 0x101 * ((uint32_t)s[2]); - uint32_t sg = 0x101 * ((uint32_t)s[1]); - uint32_t sr = 0x101 * ((uint32_t)s[0]); - - // Convert from 565 color to 16-bit color. - uint32_t old_rgb_565 = wuffs_base__peek_u16le__no_bounds_check(d + (0 * 2)); - uint32_t old_r5 = 0x1F & (old_rgb_565 >> 11); - uint32_t dr = (0x8421 * old_r5) >> 4; - uint32_t old_g6 = 0x3F & (old_rgb_565 >> 5); - uint32_t dg = (0x1041 * old_g6) >> 2; - uint32_t old_b5 = 0x1F & (old_rgb_565 >> 0); - uint32_t db = (0x8421 * old_b5) >> 4; - - // Calculate the inverse of the src-alpha: how much of the dst to keep. - uint32_t ia = 0xFFFF - sa; - - // Composite src (nonpremul) over dst (premul). - dr = ((sr * sa) + (dr * ia)) / 0xFFFF; - dg = ((sg * sa) + (dg * ia)) / 0xFFFF; - db = ((sb * sa) + (db * ia)) / 0xFFFF; - - // Convert from 16-bit color to 565 color and combine the components. - uint32_t new_r5 = 0x1F & (dr >> 11); - uint32_t new_g6 = 0x3F & (dg >> 10); - uint32_t new_b5 = 0x1F & (db >> 11); - uint32_t new_rgb_565 = (new_r5 << 11) | (new_g6 << 5) | (new_b5 << 0); - wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)new_rgb_565); - - s += 1 * 4; - d += 1 * 2; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgr_565__rgba_premul__src(uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len2 = dst_len / 2; - size_t src_len4 = src_len / 4; - size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - // TODO: unroll. - - while (n >= 1) { - wuffs_base__poke_u16le__no_bounds_check( - d + (0 * 2), - wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565( - wuffs_base__swap_u32_argb_abgr( - wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))))); - - s += 1 * 4; - d += 1 * 2; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgr_565__rgba_premul__src_over( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len2 = dst_len / 2; - size_t src_len4 = src_len / 4; - size_t len = (dst_len2 < src_len4) ? dst_len2 : src_len4; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - // TODO: unroll. - - while (n >= 1) { - // Extract 16-bit color components. - uint32_t sa = 0x101 * ((uint32_t)s[3]); - uint32_t sb = 0x101 * ((uint32_t)s[2]); - uint32_t sg = 0x101 * ((uint32_t)s[1]); - uint32_t sr = 0x101 * ((uint32_t)s[0]); - - // Convert from 565 color to 16-bit color. - uint32_t old_rgb_565 = wuffs_base__peek_u16le__no_bounds_check(d + (0 * 2)); - uint32_t old_r5 = 0x1F & (old_rgb_565 >> 11); - uint32_t dr = (0x8421 * old_r5) >> 4; - uint32_t old_g6 = 0x3F & (old_rgb_565 >> 5); - uint32_t dg = (0x1041 * old_g6) >> 2; - uint32_t old_b5 = 0x1F & (old_rgb_565 >> 0); - uint32_t db = (0x8421 * old_b5) >> 4; - - // Calculate the inverse of the src-alpha: how much of the dst to keep. - uint32_t ia = 0xFFFF - sa; - - // Composite src (premul) over dst (premul). - dr = sr + ((dr * ia) / 0xFFFF); - dg = sg + ((dg * ia) / 0xFFFF); - db = sb + ((db * ia) / 0xFFFF); - - // Convert from 16-bit color to 565 color and combine the components. - uint32_t new_r5 = 0x1F & (dr >> 11); - uint32_t new_g6 = 0x3F & (dg >> 10); - uint32_t new_b5 = 0x1F & (db >> 11); - uint32_t new_rgb_565 = (new_r5 << 11) | (new_g6 << 5) | (new_b5 << 0); - wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)new_rgb_565); - - s += 1 * 4; - d += 1 * 2; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgr_565__y(uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len2 = dst_len / 2; - size_t len = (dst_len2 < src_len) ? dst_len2 : src_len; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - // TODO: unroll. - - while (n >= 1) { - uint32_t y5 = s[0] >> 3; - uint32_t y6 = s[0] >> 2; - uint32_t rgb_565 = (y5 << 11) | (y6 << 5) | (y5 << 0); - wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)rgb_565); - - s += 1 * 1; - d += 1 * 2; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgr_565__y_16be(uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len2 = dst_len / 2; - size_t src_len2 = src_len / 2; - size_t len = (dst_len2 < src_len2) ? dst_len2 : src_len2; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - // TODO: unroll. - - while (n >= 1) { - uint32_t y5 = s[0] >> 3; - uint32_t y6 = s[0] >> 2; - uint32_t rgb_565 = (y5 << 11) | (y6 << 5) | (y5 << 0); - wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)rgb_565); - - s += 1 * 2; - d += 1 * 2; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgr_565__index__src(uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - if (dst_palette_len != - WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) { - return 0; - } - size_t dst_len2 = dst_len / 2; - size_t len = (dst_len2 < src_len) ? dst_len2 : src_len; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - const size_t loop_unroll_count = 4; - - while (n >= loop_unroll_count) { - wuffs_base__poke_u16le__no_bounds_check( - d + (0 * 2), wuffs_base__peek_u16le__no_bounds_check( - dst_palette_ptr + ((size_t)s[0] * 4))); - wuffs_base__poke_u16le__no_bounds_check( - d + (1 * 2), wuffs_base__peek_u16le__no_bounds_check( - dst_palette_ptr + ((size_t)s[1] * 4))); - wuffs_base__poke_u16le__no_bounds_check( - d + (2 * 2), wuffs_base__peek_u16le__no_bounds_check( - dst_palette_ptr + ((size_t)s[2] * 4))); - wuffs_base__poke_u16le__no_bounds_check( - d + (3 * 2), wuffs_base__peek_u16le__no_bounds_check( - dst_palette_ptr + ((size_t)s[3] * 4))); - - s += loop_unroll_count * 1; - d += loop_unroll_count * 2; - n -= loop_unroll_count; - } - - while (n >= 1) { - wuffs_base__poke_u16le__no_bounds_check( - d + (0 * 2), wuffs_base__peek_u16le__no_bounds_check( - dst_palette_ptr + ((size_t)s[0] * 4))); - - s += 1 * 1; - d += 1 * 2; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgr_565__index_bgra_nonpremul__src_over( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - if (dst_palette_len != - WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) { - return 0; - } - size_t dst_len2 = dst_len / 2; - size_t len = (dst_len2 < src_len) ? dst_len2 : src_len; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - // TODO: unroll. - - while (n >= 1) { - uint32_t d0 = wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul( - wuffs_base__peek_u16le__no_bounds_check(d + (0 * 2))); - uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr + - ((size_t)s[0] * 4)); - wuffs_base__poke_u16le__no_bounds_check( - d + (0 * 2), - wuffs_base__color_u32_argb_premul__as__color_u16_rgb_565( - wuffs_base__composite_premul_nonpremul_u32_axxx(d0, s0))); - - s += 1 * 1; - d += 1 * 2; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgr_565__index_binary_alpha__src_over( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - if (dst_palette_len != - WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) { - return 0; - } - size_t dst_len2 = dst_len / 2; - size_t len = (dst_len2 < src_len) ? dst_len2 : src_len; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - // TODO: unroll. - - while (n >= 1) { - uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr + - ((size_t)s[0] * 4)); - if (s0) { - wuffs_base__poke_u16le__no_bounds_check(d + (0 * 2), (uint16_t)s0); - } - - s += 1 * 1; - d += 1 * 2; - n -= 1; - } - - return len; -} - -// -------- - -static uint64_t // -wuffs_base__pixel_swizzler__bgr__bgr_565(uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len3 = dst_len / 3; - size_t src_len2 = src_len / 2; - size_t len = (dst_len3 < src_len2) ? dst_len3 : src_len2; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - // TODO: unroll. - - while (n >= 1) { - uint32_t s0 = wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul( - wuffs_base__peek_u16le__no_bounds_check(s + (0 * 2))); - wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0); - - s += 1 * 2; - d += 1 * 3; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgr__bgra_nonpremul__src(uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len3 = dst_len / 3; - size_t src_len4 = src_len / 4; - size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - // TODO: unroll. - - while (n >= 1) { - uint32_t s0 = - wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul( - wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))); - wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0); - - s += 1 * 4; - d += 1 * 3; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgr__bgra_nonpremul_4x16le__src( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len3 = dst_len / 3; - size_t src_len8 = src_len / 8; - size_t len = (dst_len3 < src_len8) ? dst_len3 : src_len8; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - // TODO: unroll. - - while (n >= 1) { - uint32_t s0 = - wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul( - wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8))); - wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0); - - s += 1 * 8; - d += 1 * 3; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgr__bgra_nonpremul__src_over( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len3 = dst_len / 3; - size_t src_len4 = src_len / 4; - size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - // TODO: unroll. - - while (n >= 1) { - // Extract 16-bit color components. - uint32_t dr = 0x101 * ((uint32_t)d[2]); - uint32_t dg = 0x101 * ((uint32_t)d[1]); - uint32_t db = 0x101 * ((uint32_t)d[0]); - uint32_t sa = 0x101 * ((uint32_t)s[3]); - uint32_t sr = 0x101 * ((uint32_t)s[2]); - uint32_t sg = 0x101 * ((uint32_t)s[1]); - uint32_t sb = 0x101 * ((uint32_t)s[0]); - - // Calculate the inverse of the src-alpha: how much of the dst to keep. - uint32_t ia = 0xFFFF - sa; - - // Composite src (nonpremul) over dst (premul). - dr = ((sr * sa) + (dr * ia)) / 0xFFFF; - dg = ((sg * sa) + (dg * ia)) / 0xFFFF; - db = ((sb * sa) + (db * ia)) / 0xFFFF; - - // Convert from 16-bit color to 8-bit color. - d[0] = (uint8_t)(db >> 8); - d[1] = (uint8_t)(dg >> 8); - d[2] = (uint8_t)(dr >> 8); - - s += 1 * 4; - d += 1 * 3; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgr__bgra_nonpremul_4x16le__src_over( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len3 = dst_len / 3; - size_t src_len8 = src_len / 8; - size_t len = (dst_len3 < src_len8) ? dst_len3 : src_len8; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - // TODO: unroll. - - while (n >= 1) { - // Extract 16-bit color components. - uint32_t dr = 0x101 * ((uint32_t)d[2]); - uint32_t dg = 0x101 * ((uint32_t)d[1]); - uint32_t db = 0x101 * ((uint32_t)d[0]); - uint32_t sa = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 6)); - uint32_t sr = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 4)); - uint32_t sg = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 2)); - uint32_t sb = ((uint32_t)wuffs_base__peek_u16le__no_bounds_check(s + 0)); - - // Calculate the inverse of the src-alpha: how much of the dst to keep. - uint32_t ia = 0xFFFF - sa; - - // Composite src (nonpremul) over dst (premul). - dr = ((sr * sa) + (dr * ia)) / 0xFFFF; - dg = ((sg * sa) + (dg * ia)) / 0xFFFF; - db = ((sb * sa) + (db * ia)) / 0xFFFF; - - // Convert from 16-bit color to 8-bit color. - d[0] = (uint8_t)(db >> 8); - d[1] = (uint8_t)(dg >> 8); - d[2] = (uint8_t)(dr >> 8); - - s += 1 * 8; - d += 1 * 3; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgr__bgra_premul__src(uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len3 = dst_len / 3; - size_t src_len4 = src_len / 4; - size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - while (n >= 1) { - uint8_t s0 = s[0]; - uint8_t s1 = s[1]; - uint8_t s2 = s[2]; - d[0] = s0; - d[1] = s1; - d[2] = s2; - - s += 1 * 4; - d += 1 * 3; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgr__bgra_premul__src_over(uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len3 = dst_len / 3; - size_t src_len4 = src_len / 4; - size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - while (n >= 1) { - // Extract 16-bit color components. - uint32_t dr = 0x101 * ((uint32_t)d[2]); - uint32_t dg = 0x101 * ((uint32_t)d[1]); - uint32_t db = 0x101 * ((uint32_t)d[0]); - uint32_t sa = 0x101 * ((uint32_t)s[3]); - uint32_t sr = 0x101 * ((uint32_t)s[2]); - uint32_t sg = 0x101 * ((uint32_t)s[1]); - uint32_t sb = 0x101 * ((uint32_t)s[0]); - - // Calculate the inverse of the src-alpha: how much of the dst to keep. - uint32_t ia = 0xFFFF - sa; - - // Composite src (premul) over dst (premul). - dr = sr + ((dr * ia) / 0xFFFF); - dg = sg + ((dg * ia) / 0xFFFF); - db = sb + ((db * ia) / 0xFFFF); - - // Convert from 16-bit color to 8-bit color. - d[0] = (uint8_t)(db >> 8); - d[1] = (uint8_t)(dg >> 8); - d[2] = (uint8_t)(dr >> 8); - - s += 1 * 4; - d += 1 * 3; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgr__rgba_nonpremul__src(uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len3 = dst_len / 3; - size_t src_len4 = src_len / 4; - size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - // TODO: unroll. - - while (n >= 1) { - uint32_t s0 = wuffs_base__swap_u32_argb_abgr( - wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul( - wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)))); - wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0); - - s += 1 * 4; - d += 1 * 3; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgr__rgba_nonpremul__src_over( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len3 = dst_len / 3; - size_t src_len4 = src_len / 4; - size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - // TODO: unroll. - - while (n >= 1) { - // Extract 16-bit color components. - uint32_t dr = 0x101 * ((uint32_t)d[2]); - uint32_t dg = 0x101 * ((uint32_t)d[1]); - uint32_t db = 0x101 * ((uint32_t)d[0]); - uint32_t sa = 0x101 * ((uint32_t)s[3]); - uint32_t sb = 0x101 * ((uint32_t)s[2]); - uint32_t sg = 0x101 * ((uint32_t)s[1]); - uint32_t sr = 0x101 * ((uint32_t)s[0]); - - // Calculate the inverse of the src-alpha: how much of the dst to keep. - uint32_t ia = 0xFFFF - sa; - - // Composite src (nonpremul) over dst (premul). - dr = ((sr * sa) + (dr * ia)) / 0xFFFF; - dg = ((sg * sa) + (dg * ia)) / 0xFFFF; - db = ((sb * sa) + (db * ia)) / 0xFFFF; - - // Convert from 16-bit color to 8-bit color. - d[0] = (uint8_t)(db >> 8); - d[1] = (uint8_t)(dg >> 8); - d[2] = (uint8_t)(dr >> 8); - - s += 1 * 4; - d += 1 * 3; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgr__rgba_premul__src(uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len3 = dst_len / 3; - size_t src_len4 = src_len / 4; - size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - while (n >= 1) { - uint8_t s0 = s[0]; - uint8_t s1 = s[1]; - uint8_t s2 = s[2]; - d[0] = s2; - d[1] = s1; - d[2] = s0; - - s += 1 * 4; - d += 1 * 3; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgr__rgba_premul__src_over(uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len3 = dst_len / 3; - size_t src_len4 = src_len / 4; - size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - while (n >= 1) { - // Extract 16-bit color components. - uint32_t dr = 0x101 * ((uint32_t)d[2]); - uint32_t dg = 0x101 * ((uint32_t)d[1]); - uint32_t db = 0x101 * ((uint32_t)d[0]); - uint32_t sa = 0x101 * ((uint32_t)s[3]); - uint32_t sb = 0x101 * ((uint32_t)s[2]); - uint32_t sg = 0x101 * ((uint32_t)s[1]); - uint32_t sr = 0x101 * ((uint32_t)s[0]); - - // Calculate the inverse of the src-alpha: how much of the dst to keep. - uint32_t ia = 0xFFFF - sa; - - // Composite src (premul) over dst (premul). - dr = sr + ((dr * ia) / 0xFFFF); - dg = sg + ((dg * ia) / 0xFFFF); - db = sb + ((db * ia) / 0xFFFF); - - // Convert from 16-bit color to 8-bit color. - d[0] = (uint8_t)(db >> 8); - d[1] = (uint8_t)(dg >> 8); - d[2] = (uint8_t)(dr >> 8); - - s += 1 * 4; - d += 1 * 3; - n -= 1; - } - - return len; -} - -// -------- - -static uint64_t // -wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_nonpremul__src_over( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len4 = dst_len / 4; - size_t src_len4 = src_len / 4; - size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - while (n >= 1) { - uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4)); - uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)); - wuffs_base__poke_u32le__no_bounds_check( - d + (0 * 4), - wuffs_base__composite_nonpremul_nonpremul_u32_axxx(d0, s0)); - - s += 1 * 4; - d += 1 * 4; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_nonpremul_4x16le__src( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len4 = dst_len / 4; - size_t src_len8 = src_len / 8; - size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - - size_t n = len; - while (n >= 1) { - wuffs_base__poke_u32le__no_bounds_check( - d + (0 * 4), wuffs_base__color_u64__as__color_u32( - wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8)))); - - s += 1 * 8; - d += 1 * 4; - n -= 1; - } - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_nonpremul_4x16le__src_over( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len4 = dst_len / 4; - size_t src_len8 = src_len / 8; - size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - while (n >= 1) { - uint64_t d0 = wuffs_base__color_u32__as__color_u64( - wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4))); - uint64_t s0 = wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8)); - wuffs_base__poke_u32le__no_bounds_check( - d + (0 * 4), - wuffs_base__color_u64__as__color_u32( - wuffs_base__composite_nonpremul_nonpremul_u64_axxx(d0, s0))); - - s += 1 * 8; - d += 1 * 4; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_premul__src( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len4 = dst_len / 4; - size_t src_len4 = src_len / 4; - size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - while (n >= 1) { - uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)); - wuffs_base__poke_u32le__no_bounds_check( - d + (0 * 4), - wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul(s0)); - - s += 1 * 4; - d += 1 * 4; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_premul__src_over( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len4 = dst_len / 4; - size_t src_len4 = src_len / 4; - size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - while (n >= 1) { - uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4)); - uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)); - wuffs_base__poke_u32le__no_bounds_check( - d + (0 * 4), wuffs_base__composite_nonpremul_premul_u32_axxx(d0, s0)); - - s += 1 * 4; - d += 1 * 4; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgra_nonpremul__index_bgra_nonpremul__src_over( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - if (dst_palette_len != - WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) { - return 0; - } - size_t dst_len4 = dst_len / 4; - size_t len = (dst_len4 < src_len) ? dst_len4 : src_len; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - // TODO: unroll. - - while (n >= 1) { - uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4)); - uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr + - ((size_t)s[0] * 4)); - wuffs_base__poke_u32le__no_bounds_check( - d + (0 * 4), - wuffs_base__composite_nonpremul_nonpremul_u32_axxx(d0, s0)); - - s += 1 * 1; - d += 1 * 4; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_nonpremul__src_over( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len4 = dst_len / 4; - size_t src_len4 = src_len / 4; - size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - while (n >= 1) { - uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4)); - uint32_t s0 = wuffs_base__swap_u32_argb_abgr( - wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))); - wuffs_base__poke_u32le__no_bounds_check( - d + (0 * 4), - wuffs_base__composite_nonpremul_nonpremul_u32_axxx(d0, s0)); - - s += 1 * 4; - d += 1 * 4; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_premul__src( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len4 = dst_len / 4; - size_t src_len4 = src_len / 4; - size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - while (n >= 1) { - uint32_t s0 = wuffs_base__swap_u32_argb_abgr( - wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))); - wuffs_base__poke_u32le__no_bounds_check( - d + (0 * 4), - wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul(s0)); - - s += 1 * 4; - d += 1 * 4; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_premul__src_over( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len4 = dst_len / 4; - size_t src_len4 = src_len / 4; - size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - while (n >= 1) { - uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4)); - uint32_t s0 = wuffs_base__swap_u32_argb_abgr( - wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))); - wuffs_base__poke_u32le__no_bounds_check( - d + (0 * 4), wuffs_base__composite_nonpremul_premul_u32_axxx(d0, s0)); - - s += 1 * 4; - d += 1 * 4; - n -= 1; - } - - return len; -} - -// -------- - -static uint64_t // -wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_nonpremul__src( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len8 = dst_len / 8; - size_t src_len4 = src_len / 4; - size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - - size_t n = len; - while (n >= 1) { - uint8_t s0 = s[0]; - uint8_t s1 = s[1]; - uint8_t s2 = s[2]; - uint8_t s3 = s[3]; - d[0] = s0; - d[1] = s0; - d[2] = s1; - d[3] = s1; - d[4] = s2; - d[5] = s2; - d[6] = s3; - d[7] = s3; - - s += 1 * 4; - d += 1 * 8; - n -= 1; - } - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_nonpremul__src_over( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len8 = dst_len / 8; - size_t src_len4 = src_len / 4; - size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - - size_t n = len; - while (n >= 1) { - uint64_t d0 = wuffs_base__peek_u64le__no_bounds_check(d + (0 * 8)); - uint64_t s0 = wuffs_base__color_u32__as__color_u64( - wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))); - wuffs_base__poke_u64le__no_bounds_check( - d + (0 * 8), - wuffs_base__composite_nonpremul_nonpremul_u64_axxx(d0, s0)); - - s += 1 * 4; - d += 1 * 8; - n -= 1; - } - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_nonpremul_4x16le__src_over( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len8 = dst_len / 8; - size_t src_len8 = src_len / 8; - size_t len = (dst_len8 < src_len8) ? dst_len8 : src_len8; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - - size_t n = len; - while (n >= 1) { - uint64_t d0 = wuffs_base__peek_u64le__no_bounds_check(d + (0 * 8)); - uint64_t s0 = wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8)); - wuffs_base__poke_u64le__no_bounds_check( - d + (0 * 8), - wuffs_base__composite_nonpremul_nonpremul_u64_axxx(d0, s0)); - - s += 1 * 8; - d += 1 * 8; - n -= 1; - } - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_premul__src( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len8 = dst_len / 8; - size_t src_len4 = src_len / 4; - size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - - size_t n = len; - while (n >= 1) { - uint64_t s0 = wuffs_base__color_u32__as__color_u64( - wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul( - wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)))); - wuffs_base__poke_u64le__no_bounds_check(d + (0 * 8), s0); - - s += 1 * 4; - d += 1 * 8; - n -= 1; - } - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_premul__src_over( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len8 = dst_len / 8; - size_t src_len4 = src_len / 4; - size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - - size_t n = len; - while (n >= 1) { - uint64_t d0 = wuffs_base__peek_u64le__no_bounds_check(d + (0 * 8)); - uint64_t s0 = wuffs_base__color_u32__as__color_u64( - wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))); - wuffs_base__poke_u64le__no_bounds_check( - d + (0 * 8), wuffs_base__composite_nonpremul_premul_u64_axxx(d0, s0)); - - s += 1 * 4; - d += 1 * 8; - n -= 1; - } - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__index_bgra_nonpremul__src_over( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - if (dst_palette_len != - WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) { - return 0; - } - size_t dst_len8 = dst_len / 8; - size_t len = (dst_len8 < src_len) ? dst_len8 : src_len; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - while (n >= 1) { - uint64_t d0 = wuffs_base__peek_u64le__no_bounds_check(d + (0 * 8)); - uint64_t s0 = wuffs_base__color_u32__as__color_u64( - wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr + - ((size_t)s[0] * 4))); - wuffs_base__poke_u64le__no_bounds_check( - d + (0 * 8), - wuffs_base__composite_nonpremul_nonpremul_u64_axxx(d0, s0)); - - s += 1 * 1; - d += 1 * 8; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__rgba_nonpremul__src( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len8 = dst_len / 8; - size_t src_len4 = src_len / 4; - size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - - size_t n = len; - while (n >= 1) { - uint8_t s0 = s[0]; - uint8_t s1 = s[1]; - uint8_t s2 = s[2]; - uint8_t s3 = s[3]; - d[0] = s2; - d[1] = s2; - d[2] = s1; - d[3] = s1; - d[4] = s0; - d[5] = s0; - d[6] = s3; - d[7] = s3; - - s += 1 * 4; - d += 1 * 8; - n -= 1; - } - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__rgba_nonpremul__src_over( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len8 = dst_len / 8; - size_t src_len4 = src_len / 4; - size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - - size_t n = len; - while (n >= 1) { - uint64_t d0 = wuffs_base__peek_u64le__no_bounds_check(d + (0 * 8)); - uint64_t s0 = - wuffs_base__color_u32__as__color_u64(wuffs_base__swap_u32_argb_abgr( - wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)))); - wuffs_base__poke_u64le__no_bounds_check( - d + (0 * 8), - wuffs_base__composite_nonpremul_nonpremul_u64_axxx(d0, s0)); - - s += 1 * 4; - d += 1 * 8; - n -= 1; - } - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__rgba_premul__src( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len8 = dst_len / 8; - size_t src_len4 = src_len / 4; - size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - - size_t n = len; - while (n >= 1) { - uint64_t s0 = wuffs_base__color_u32__as__color_u64( - wuffs_base__color_u32_argb_premul__as__color_u32_argb_nonpremul( - wuffs_base__swap_u32_argb_abgr( - wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))))); - wuffs_base__poke_u64le__no_bounds_check(d + (0 * 8), s0); - - s += 1 * 4; - d += 1 * 8; - n -= 1; - } - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__rgba_premul__src_over( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len8 = dst_len / 8; - size_t src_len4 = src_len / 4; - size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - - size_t n = len; - while (n >= 1) { - uint64_t d0 = wuffs_base__peek_u64le__no_bounds_check(d + (0 * 8)); - uint64_t s0 = - wuffs_base__color_u32__as__color_u64(wuffs_base__swap_u32_argb_abgr( - wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)))); - wuffs_base__poke_u64le__no_bounds_check( - d + (0 * 8), wuffs_base__composite_nonpremul_premul_u64_axxx(d0, s0)); - - s += 1 * 4; - d += 1 * 8; - n -= 1; - } - return len; -} - -// -------- - -static uint64_t // -wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len4 = dst_len / 4; - size_t src_len4 = src_len / 4; - size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - // TODO: unroll. - - while (n >= 1) { - uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)); - wuffs_base__poke_u32le__no_bounds_check( - d + (0 * 4), - wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(s0)); - - s += 1 * 4; - d += 1 * 4; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul_4x16le__src( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len4 = dst_len / 4; - size_t src_len8 = src_len / 8; - size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - // TODO: unroll. - - while (n >= 1) { - uint64_t s0 = wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8)); - wuffs_base__poke_u32le__no_bounds_check( - d + (0 * 4), - wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul(s0)); - - s += 1 * 8; - d += 1 * 4; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src_over( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len4 = dst_len / 4; - size_t src_len4 = src_len / 4; - size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - // TODO: unroll. - - while (n >= 1) { - uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4)); - uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)); - wuffs_base__poke_u32le__no_bounds_check( - d + (0 * 4), wuffs_base__composite_premul_nonpremul_u32_axxx(d0, s0)); - - s += 1 * 4; - d += 1 * 4; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul_4x16le__src_over( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len4 = dst_len / 4; - size_t src_len8 = src_len / 8; - size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - // TODO: unroll. - - while (n >= 1) { - uint64_t d0 = wuffs_base__color_u32__as__color_u64( - wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4))); - uint64_t s0 = wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8)); - wuffs_base__poke_u32le__no_bounds_check( - d + (0 * 4), - wuffs_base__color_u64__as__color_u32( - wuffs_base__composite_premul_nonpremul_u64_axxx(d0, s0))); - - s += 1 * 8; - d += 1 * 4; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgra_premul__bgra_premul__src_over( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len4 = dst_len / 4; - size_t src_len4 = src_len / 4; - size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - // TODO: unroll. - - while (n >= 1) { - uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4)); - uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4)); - wuffs_base__poke_u32le__no_bounds_check( - d + (0 * 4), wuffs_base__composite_premul_premul_u32_axxx(d0, s0)); - - s += 1 * 4; - d += 1 * 4; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgra_premul__index_bgra_nonpremul__src_over( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - if (dst_palette_len != - WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) { - return 0; - } - size_t dst_len4 = dst_len / 4; - size_t len = (dst_len4 < src_len) ? dst_len4 : src_len; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - // TODO: unroll. - - while (n >= 1) { - uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4)); - uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr + - ((size_t)s[0] * 4)); - wuffs_base__poke_u32le__no_bounds_check( - d + (0 * 4), wuffs_base__composite_premul_nonpremul_u32_axxx(d0, s0)); - - s += 1 * 1; - d += 1 * 4; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len4 = dst_len / 4; - size_t src_len4 = src_len / 4; - size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - // TODO: unroll. - - while (n >= 1) { - uint32_t s0 = wuffs_base__swap_u32_argb_abgr( - wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))); - wuffs_base__poke_u32le__no_bounds_check( - d + (0 * 4), - wuffs_base__color_u32_argb_nonpremul__as__color_u32_argb_premul(s0)); - - s += 1 * 4; - d += 1 * 4; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src_over( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len4 = dst_len / 4; - size_t src_len4 = src_len / 4; - size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - // TODO: unroll. - - while (n >= 1) { - uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4)); - uint32_t s0 = wuffs_base__swap_u32_argb_abgr( - wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))); - wuffs_base__poke_u32le__no_bounds_check( - d + (0 * 4), wuffs_base__composite_premul_nonpremul_u32_axxx(d0, s0)); - - s += 1 * 4; - d += 1 * 4; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul_4x16le__src( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len4 = dst_len / 4; - size_t src_len8 = src_len / 8; - size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - // TODO: unroll. - - while (n >= 1) { - uint64_t s0 = wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8)); - wuffs_base__poke_u32le__no_bounds_check( - d + (0 * 4), - wuffs_base__swap_u32_argb_abgr( - wuffs_base__color_u64_argb_nonpremul__as__color_u32_argb_premul( - s0))); - - s += 1 * 8; - d += 1 * 4; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul_4x16le__src_over( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len4 = dst_len / 4; - size_t src_len8 = src_len / 8; - size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - // TODO: unroll. - - while (n >= 1) { - uint64_t d0 = wuffs_base__color_u32__as__color_u64( - wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4))); - uint64_t s0 = wuffs_base__swap_u64_argb_abgr( - wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8))); - wuffs_base__poke_u32le__no_bounds_check( - d + (0 * 4), - wuffs_base__color_u64__as__color_u32( - wuffs_base__composite_premul_nonpremul_u64_axxx(d0, s0))); - - s += 1 * 8; - d += 1 * 4; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgra_premul__rgba_premul__src_over( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len4 = dst_len / 4; - size_t src_len4 = src_len / 4; - size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - while (n >= 1) { - uint32_t d0 = wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4)); - uint32_t s0 = wuffs_base__swap_u32_argb_abgr( - wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))); - wuffs_base__poke_u32le__no_bounds_check( - d + (0 * 4), wuffs_base__composite_premul_premul_u32_axxx(d0, s0)); - - s += 1 * 4; - d += 1 * 4; - n -= 1; - } - - return len; -} - -// -------- - -static uint64_t // -wuffs_base__pixel_swizzler__bgrw__bgr(uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len4 = dst_len / 4; - size_t src_len3 = src_len / 3; - size_t len = (dst_len4 < src_len3) ? dst_len4 : src_len3; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - // TODO: unroll. - - while (n >= 1) { - wuffs_base__poke_u32le__no_bounds_check( - d + (0 * 4), - 0xFF000000 | wuffs_base__peek_u24le__no_bounds_check(s + (0 * 3))); - - s += 1 * 3; - d += 1 * 4; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgrw__bgr_565(uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len4 = dst_len / 4; - size_t src_len2 = src_len / 2; - size_t len = (dst_len4 < src_len2) ? dst_len4 : src_len2; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - // TODO: unroll. - - while (n >= 1) { - wuffs_base__poke_u32le__no_bounds_check( - d + (0 * 4), wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul( - wuffs_base__peek_u16le__no_bounds_check(s + (0 * 2)))); - - s += 1 * 2; - d += 1 * 4; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgrw__bgrx(uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len4 = dst_len / 4; - size_t src_len4 = src_len / 4; - size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - // TODO: unroll. - - while (n >= 1) { - wuffs_base__poke_u32le__no_bounds_check( - d + (0 * 4), - 0xFF000000 | wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))); - - s += 1 * 4; - d += 1 * 4; - n -= 1; - } - - return len; -} - -// ‼ WUFFS MULTI-FILE SECTION +x86_sse42 -#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) -WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2") -static uint64_t // -wuffs_base__pixel_swizzler__bgrw__rgb__sse42(uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len4 = dst_len / 4; - size_t src_len3 = src_len / 3; - size_t len = (dst_len4 < src_len3) ? dst_len4 : src_len3; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - __m128i shuffle = _mm_set_epi8(+0x00, +0x09, +0x0A, +0x0B, // - +0x00, +0x06, +0x07, +0x08, // - +0x00, +0x03, +0x04, +0x05, // - +0x00, +0x00, +0x01, +0x02); - __m128i or_ff = _mm_set_epi8(-0x01, +0x00, +0x00, +0x00, // - -0x01, +0x00, +0x00, +0x00, // - -0x01, +0x00, +0x00, +0x00, // - -0x01, +0x00, +0x00, +0x00); - - while (n >= 6) { - __m128i x; - x = _mm_lddqu_si128((const __m128i*)(const void*)s); - x = _mm_shuffle_epi8(x, shuffle); - x = _mm_or_si128(x, or_ff); - _mm_storeu_si128((__m128i*)(void*)d, x); - - s += 4 * 3; - d += 4 * 4; - n -= 4; - } - - while (n >= 1) { - uint8_t b0 = s[0]; - uint8_t b1 = s[1]; - uint8_t b2 = s[2]; - d[0] = b2; - d[1] = b1; - d[2] = b0; - d[3] = 0xFF; - - s += 1 * 3; - d += 1 * 4; - n -= 1; - } - - return len; -} -#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) -// ‼ WUFFS MULTI-FILE SECTION -x86_sse42 - -static uint64_t // -wuffs_base__pixel_swizzler__bgrw__rgb(uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len4 = dst_len / 4; - size_t src_len3 = src_len / 3; - size_t len = (dst_len4 < src_len3) ? dst_len4 : src_len3; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - while (n >= 1) { - uint8_t b0 = s[0]; - uint8_t b1 = s[1]; - uint8_t b2 = s[2]; - d[0] = b2; - d[1] = b1; - d[2] = b0; - d[3] = 0xFF; - - s += 1 * 3; - d += 1 * 4; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgrw__rgbx(uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len4 = dst_len / 4; - size_t src_len4 = src_len / 4; - size_t len = (dst_len4 < src_len4) ? dst_len4 : src_len4; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - // TODO: unroll. - - while (n >= 1) { - uint8_t b0 = s[0]; - uint8_t b1 = s[1]; - uint8_t b2 = s[2]; - d[0] = b2; - d[1] = b1; - d[2] = b0; - d[3] = 0xFF; - - s += 1 * 4; - d += 1 * 4; - n -= 1; - } - - return len; -} - -// -------- - -static uint64_t // -wuffs_base__pixel_swizzler__bgrw_4x16le__bgr(uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len8 = dst_len / 8; - size_t src_len3 = src_len / 3; - size_t len = (dst_len8 < src_len3) ? dst_len8 : src_len3; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - while (n >= 1) { - uint8_t s0 = s[0]; - uint8_t s1 = s[1]; - uint8_t s2 = s[2]; - d[0] = s0; - d[1] = s0; - d[2] = s1; - d[3] = s1; - d[4] = s2; - d[5] = s2; - d[6] = 0xFF; - d[7] = 0xFF; - - s += 1 * 3; - d += 1 * 8; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgrw_4x16le__bgr_565(uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len8 = dst_len / 8; - size_t src_len2 = src_len / 2; - size_t len = (dst_len8 < src_len2) ? dst_len8 : src_len2; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - while (n >= 1) { - wuffs_base__poke_u64le__no_bounds_check( - d + (0 * 8), - wuffs_base__color_u32__as__color_u64( - wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul( - wuffs_base__peek_u16le__no_bounds_check(s + (0 * 2))))); - - s += 1 * 2; - d += 1 * 8; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgrw_4x16le__bgrx(uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len8 = dst_len / 8; - size_t src_len4 = src_len / 4; - size_t len = (dst_len8 < src_len4) ? dst_len8 : src_len4; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - while (n >= 1) { - uint8_t s0 = s[0]; - uint8_t s1 = s[1]; - uint8_t s2 = s[2]; - d[0] = s0; - d[1] = s0; - d[2] = s1; - d[3] = s1; - d[4] = s2; - d[5] = s2; - d[6] = 0xFF; - d[7] = 0xFF; - - s += 1 * 4; - d += 1 * 8; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__bgrw_4x16le__rgb(uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len8 = dst_len / 8; - size_t src_len3 = src_len / 3; - size_t len = (dst_len8 < src_len3) ? dst_len8 : src_len3; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - while (n >= 1) { - uint8_t s0 = s[0]; - uint8_t s1 = s[1]; - uint8_t s2 = s[2]; - d[0] = s2; - d[1] = s2; - d[2] = s1; - d[3] = s1; - d[4] = s0; - d[5] = s0; - d[6] = 0xFF; - d[7] = 0xFF; - - s += 1 * 3; - d += 1 * 8; - n -= 1; - } - - return len; -} - -// -------- - -static uint64_t // -wuffs_base__pixel_swizzler__rgba_nonpremul__bgra_nonpremul_4x16le__src( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len4 = dst_len / 4; - size_t src_len8 = src_len / 8; - size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - - size_t n = len; - while (n >= 1) { - wuffs_base__poke_u32le__no_bounds_check( - d + (0 * 4), wuffs_base__color_u64__as__color_u32__swap_u32_argb_abgr( - wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8)))); - - s += 1 * 8; - d += 1 * 4; - n -= 1; - } - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__rgba_nonpremul__bgra_nonpremul_4x16le__src_over( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len4 = dst_len / 4; - size_t src_len8 = src_len / 8; - size_t len = (dst_len4 < src_len8) ? dst_len4 : src_len8; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - while (n >= 1) { - uint64_t d0 = wuffs_base__color_u32__as__color_u64( - wuffs_base__peek_u32le__no_bounds_check(d + (0 * 4))); - uint64_t s0 = wuffs_base__swap_u64_argb_abgr( - wuffs_base__peek_u64le__no_bounds_check(s + (0 * 8))); - wuffs_base__poke_u32le__no_bounds_check( - d + (0 * 4), - wuffs_base__color_u64__as__color_u32( - wuffs_base__composite_nonpremul_nonpremul_u64_axxx(d0, s0))); - - s += 1 * 8; - d += 1 * 4; - n -= 1; - } - - return len; -} - -// -------- - -static uint64_t // -wuffs_base__pixel_swizzler__rgbw__bgr_565(uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len4 = dst_len / 4; - size_t src_len2 = src_len / 2; - size_t len = (dst_len4 < src_len2) ? dst_len4 : src_len2; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - // TODO: unroll. - - while (n >= 1) { - wuffs_base__poke_u32le__no_bounds_check( - d + (0 * 4), - wuffs_base__swap_u32_argb_abgr( - wuffs_base__color_u16_rgb_565__as__color_u32_argb_premul( - wuffs_base__peek_u16le__no_bounds_check(s + (0 * 2))))); - - s += 1 * 2; - d += 1 * 4; - n -= 1; - } - - return len; -} - -// -------- - -static uint64_t // -wuffs_base__pixel_swizzler__xxx__index__src(uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - if (dst_palette_len != - WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) { - return 0; - } - size_t dst_len3 = dst_len / 3; - size_t len = (dst_len3 < src_len) ? dst_len3 : src_len; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - const size_t loop_unroll_count = 4; - - // The comparison in the while condition is ">", not ">=", because with - // ">=", the last 4-byte store could write past the end of the dst slice. - // - // Each 4-byte store writes one too many bytes, but a subsequent store - // will overwrite that with the correct byte. There is always another - // store, whether a 4-byte store in this loop or a 1-byte store in the - // next loop. - while (n > loop_unroll_count) { - wuffs_base__poke_u32le__no_bounds_check( - d + (0 * 3), wuffs_base__peek_u32le__no_bounds_check( - dst_palette_ptr + ((size_t)s[0] * 4))); - wuffs_base__poke_u32le__no_bounds_check( - d + (1 * 3), wuffs_base__peek_u32le__no_bounds_check( - dst_palette_ptr + ((size_t)s[1] * 4))); - wuffs_base__poke_u32le__no_bounds_check( - d + (2 * 3), wuffs_base__peek_u32le__no_bounds_check( - dst_palette_ptr + ((size_t)s[2] * 4))); - wuffs_base__poke_u32le__no_bounds_check( - d + (3 * 3), wuffs_base__peek_u32le__no_bounds_check( - dst_palette_ptr + ((size_t)s[3] * 4))); - - s += loop_unroll_count * 1; - d += loop_unroll_count * 3; - n -= loop_unroll_count; - } - - while (n >= 1) { - uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr + - ((size_t)s[0] * 4)); - wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0); - - s += 1 * 1; - d += 1 * 3; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__xxx__index_bgra_nonpremul__src_over( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - if (dst_palette_len != - WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) { - return 0; - } - size_t dst_len3 = dst_len / 3; - size_t len = (dst_len3 < src_len) ? dst_len3 : src_len; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - // TODO: unroll. - - while (n >= 1) { - uint32_t d0 = - wuffs_base__peek_u24le__no_bounds_check(d + (0 * 3)) | 0xFF000000; - uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr + - ((size_t)s[0] * 4)); - wuffs_base__poke_u24le__no_bounds_check( - d + (0 * 3), wuffs_base__composite_premul_nonpremul_u32_axxx(d0, s0)); - - s += 1 * 1; - d += 1 * 3; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__xxx__index_binary_alpha__src_over( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - if (dst_palette_len != - WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) { - return 0; - } - size_t dst_len3 = dst_len / 3; - size_t len = (dst_len3 < src_len) ? dst_len3 : src_len; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - const size_t loop_unroll_count = 4; - - while (n >= loop_unroll_count) { - uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr + - ((size_t)s[0] * 4)); - if (s0) { - wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0); - } - uint32_t s1 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr + - ((size_t)s[1] * 4)); - if (s1) { - wuffs_base__poke_u24le__no_bounds_check(d + (1 * 3), s1); - } - uint32_t s2 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr + - ((size_t)s[2] * 4)); - if (s2) { - wuffs_base__poke_u24le__no_bounds_check(d + (2 * 3), s2); - } - uint32_t s3 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr + - ((size_t)s[3] * 4)); - if (s3) { - wuffs_base__poke_u24le__no_bounds_check(d + (3 * 3), s3); - } - - s += loop_unroll_count * 1; - d += loop_unroll_count * 3; - n -= loop_unroll_count; - } - - while (n >= 1) { - uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr + - ((size_t)s[0] * 4)); - if (s0) { - wuffs_base__poke_u24le__no_bounds_check(d + (0 * 3), s0); - } - - s += 1 * 1; - d += 1 * 3; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__xxx__xxxx(uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len3 = dst_len / 3; - size_t src_len4 = src_len / 4; - size_t len = (dst_len3 < src_len4) ? dst_len3 : src_len4; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - // TODO: unroll. - - while (n >= 1) { - wuffs_base__poke_u24le__no_bounds_check( - d + (0 * 3), wuffs_base__peek_u32le__no_bounds_check(s + (0 * 4))); - - s += 1 * 4; - d += 1 * 3; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__xxx__y(uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len3 = dst_len / 3; - size_t len = (dst_len3 < src_len) ? dst_len3 : src_len; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - // TODO: unroll. - - while (n >= 1) { - uint8_t s0 = s[0]; - d[0] = s0; - d[1] = s0; - d[2] = s0; - - s += 1 * 1; - d += 1 * 3; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__xxx__y_16be(uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len3 = dst_len / 3; - size_t src_len2 = src_len / 2; - size_t len = (dst_len3 < src_len2) ? dst_len3 : src_len2; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - // TODO: unroll. - - while (n >= 1) { - uint8_t s0 = s[0]; - d[0] = s0; - d[1] = s0; - d[2] = s0; - - s += 1 * 2; - d += 1 * 3; - n -= 1; - } - - return len; -} - -// -------- - -static uint64_t // -wuffs_base__pixel_swizzler__xxxx__index__src(uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - if (dst_palette_len != - WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) { - return 0; - } - size_t dst_len4 = dst_len / 4; - size_t len = (dst_len4 < src_len) ? dst_len4 : src_len; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - const size_t loop_unroll_count = 4; - - while (n >= loop_unroll_count) { - wuffs_base__poke_u32le__no_bounds_check( - d + (0 * 4), wuffs_base__peek_u32le__no_bounds_check( - dst_palette_ptr + ((size_t)s[0] * 4))); - wuffs_base__poke_u32le__no_bounds_check( - d + (1 * 4), wuffs_base__peek_u32le__no_bounds_check( - dst_palette_ptr + ((size_t)s[1] * 4))); - wuffs_base__poke_u32le__no_bounds_check( - d + (2 * 4), wuffs_base__peek_u32le__no_bounds_check( - dst_palette_ptr + ((size_t)s[2] * 4))); - wuffs_base__poke_u32le__no_bounds_check( - d + (3 * 4), wuffs_base__peek_u32le__no_bounds_check( - dst_palette_ptr + ((size_t)s[3] * 4))); - - s += loop_unroll_count * 1; - d += loop_unroll_count * 4; - n -= loop_unroll_count; - } - - while (n >= 1) { - wuffs_base__poke_u32le__no_bounds_check( - d + (0 * 4), wuffs_base__peek_u32le__no_bounds_check( - dst_palette_ptr + ((size_t)s[0] * 4))); - - s += 1 * 1; - d += 1 * 4; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__xxxx__index_binary_alpha__src_over( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - if (dst_palette_len != - WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) { - return 0; - } - size_t dst_len4 = dst_len / 4; - size_t len = (dst_len4 < src_len) ? dst_len4 : src_len; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - const size_t loop_unroll_count = 4; - - while (n >= loop_unroll_count) { - uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr + - ((size_t)s[0] * 4)); - if (s0) { - wuffs_base__poke_u32le__no_bounds_check(d + (0 * 4), s0); - } - uint32_t s1 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr + - ((size_t)s[1] * 4)); - if (s1) { - wuffs_base__poke_u32le__no_bounds_check(d + (1 * 4), s1); - } - uint32_t s2 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr + - ((size_t)s[2] * 4)); - if (s2) { - wuffs_base__poke_u32le__no_bounds_check(d + (2 * 4), s2); - } - uint32_t s3 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr + - ((size_t)s[3] * 4)); - if (s3) { - wuffs_base__poke_u32le__no_bounds_check(d + (3 * 4), s3); - } - - s += loop_unroll_count * 1; - d += loop_unroll_count * 4; - n -= loop_unroll_count; - } - - while (n >= 1) { - uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr + - ((size_t)s[0] * 4)); - if (s0) { - wuffs_base__poke_u32le__no_bounds_check(d + (0 * 4), s0); - } - - s += 1 * 1; - d += 1 * 4; - n -= 1; - } - - return len; -} - -// ‼ WUFFS MULTI-FILE SECTION +x86_sse42 -#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) -WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2") -static uint64_t // -wuffs_base__pixel_swizzler__xxxx__y__sse42(uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len4 = dst_len / 4; - size_t len = (dst_len4 < src_len) ? dst_len4 : src_len; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - __m128i shuffle = _mm_set_epi8(+0x03, +0x03, +0x03, +0x03, // - +0x02, +0x02, +0x02, +0x02, // - +0x01, +0x01, +0x01, +0x01, // - +0x00, +0x00, +0x00, +0x00); - __m128i or_ff = _mm_set_epi8(-0x01, +0x00, +0x00, +0x00, // - -0x01, +0x00, +0x00, +0x00, // - -0x01, +0x00, +0x00, +0x00, // - -0x01, +0x00, +0x00, +0x00); - - while (n >= 4) { - __m128i x; - x = _mm_cvtsi32_si128((int)(wuffs_base__peek_u32le__no_bounds_check(s))); - x = _mm_shuffle_epi8(x, shuffle); - x = _mm_or_si128(x, or_ff); - _mm_storeu_si128((__m128i*)(void*)d, x); - - s += 4 * 1; - d += 4 * 4; - n -= 4; - } - - while (n >= 1) { - wuffs_base__poke_u32le__no_bounds_check( - d + (0 * 4), 0xFF000000 | (0x010101 * (uint32_t)s[0])); - - s += 1 * 1; - d += 1 * 4; - n -= 1; - } - - return len; -} -#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) -// ‼ WUFFS MULTI-FILE SECTION -x86_sse42 - -static uint64_t // -wuffs_base__pixel_swizzler__xxxx__y(uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len4 = dst_len / 4; - size_t len = (dst_len4 < src_len) ? dst_len4 : src_len; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - while (n >= 1) { - wuffs_base__poke_u32le__no_bounds_check( - d + (0 * 4), 0xFF000000 | (0x010101 * (uint32_t)s[0])); - - s += 1 * 1; - d += 1 * 4; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__xxxx__y_16be(uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len4 = dst_len / 4; - size_t src_len2 = src_len / 2; - size_t len = (dst_len4 < src_len2) ? dst_len4 : src_len2; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - while (n >= 1) { - wuffs_base__poke_u32le__no_bounds_check( - d + (0 * 4), 0xFF000000 | (0x010101 * (uint32_t)s[0])); - - s += 1 * 2; - d += 1 * 4; - n -= 1; - } - - return len; -} - -// -------- - -static uint64_t // -wuffs_base__pixel_swizzler__xxxxxxxx__index__src(uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - if (dst_palette_len != - WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) { - return 0; - } - size_t dst_len8 = dst_len / 8; - size_t len = (dst_len8 < src_len) ? dst_len8 : src_len; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - while (n >= 1) { - wuffs_base__poke_u64le__no_bounds_check( - d + (0 * 8), wuffs_base__color_u32__as__color_u64( - wuffs_base__peek_u32le__no_bounds_check( - dst_palette_ptr + ((size_t)s[0] * 4)))); - - s += 1 * 1; - d += 1 * 8; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__xxxxxxxx__index_binary_alpha__src_over( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - if (dst_palette_len != - WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) { - return 0; - } - size_t dst_len8 = dst_len / 8; - size_t len = (dst_len8 < src_len) ? dst_len8 : src_len; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - while (n >= 1) { - uint32_t s0 = wuffs_base__peek_u32le__no_bounds_check(dst_palette_ptr + - ((size_t)s[0] * 4)); - if (s0) { - wuffs_base__poke_u64le__no_bounds_check( - d + (0 * 8), wuffs_base__color_u32__as__color_u64(s0)); - } - - s += 1 * 1; - d += 1 * 8; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__xxxxxxxx__y(uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len8 = dst_len / 8; - size_t len = (dst_len8 < src_len) ? dst_len8 : src_len; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - while (n >= 1) { - wuffs_base__poke_u64le__no_bounds_check( - d + (0 * 8), 0xFFFF000000000000 | (0x010101010101 * (uint64_t)s[0])); - - s += 1 * 1; - d += 1 * 8; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__xxxxxxxx__y_16be(uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len8 = dst_len / 8; - size_t src_len2 = src_len / 2; - size_t len = (dst_len8 < src_len2) ? dst_len8 : src_len2; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - while (n >= 1) { - uint64_t s0 = - ((uint64_t)(wuffs_base__peek_u16be__no_bounds_check(s + (0 * 2)))); - wuffs_base__poke_u64le__no_bounds_check( - d + (0 * 8), 0xFFFF000000000000 | (0x000100010001 * s0)); - - s += 1 * 2; - d += 1 * 8; - n -= 1; - } - - return len; -} - -// -------- - -static uint64_t // -wuffs_base__pixel_swizzler__y__y_16be(uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t src_len2 = src_len / 2; - size_t len = (dst_len < src_len2) ? dst_len : src_len2; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - while (n >= 1) { - d[0] = s[0]; - - s += 1 * 2; - d += 1 * 1; - n -= 1; - } - - return len; -} - -static uint64_t // -wuffs_base__pixel_swizzler__y_16le__y_16be(uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - const uint8_t* src_ptr, - size_t src_len) { - size_t dst_len2 = dst_len / 2; - size_t src_len2 = src_len / 2; - size_t len = (dst_len2 < src_len2) ? dst_len2 : src_len2; - uint8_t* d = dst_ptr; - const uint8_t* s = src_ptr; - size_t n = len; - - while (n >= 1) { - uint8_t s0 = s[0]; - uint8_t s1 = s[1]; - d[0] = s1; - d[1] = s0; - - s += 1 * 2; - d += 1 * 2; - n -= 1; - } - - return len; -} - -// -------- - -static uint64_t // -wuffs_base__pixel_swizzler__transparent_black_src( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - uint64_t num_pixels, - uint32_t dst_pixfmt_bytes_per_pixel) { - uint64_t n = ((uint64_t)dst_len) / dst_pixfmt_bytes_per_pixel; - if (n > num_pixels) { - n = num_pixels; - } - memset(dst_ptr, 0, ((size_t)(n * dst_pixfmt_bytes_per_pixel))); - return n; -} - -static uint64_t // -wuffs_base__pixel_swizzler__transparent_black_src_over( - uint8_t* dst_ptr, - size_t dst_len, - uint8_t* dst_palette_ptr, - size_t dst_palette_len, - uint64_t num_pixels, - uint32_t dst_pixfmt_bytes_per_pixel) { - uint64_t n = ((uint64_t)dst_len) / dst_pixfmt_bytes_per_pixel; - if (n > num_pixels) { - n = num_pixels; - } - return n; -} - -// -------- - -static wuffs_base__pixel_swizzler__func // -wuffs_base__pixel_swizzler__prepare__y(wuffs_base__pixel_swizzler* p, - wuffs_base__pixel_format dst_pixfmt, - wuffs_base__slice_u8 dst_palette, - wuffs_base__slice_u8 src_palette, - wuffs_base__pixel_blend blend) { - switch (dst_pixfmt.repr) { - case WUFFS_BASE__PIXEL_FORMAT__Y: - return wuffs_base__pixel_swizzler__copy_1_1; - - case WUFFS_BASE__PIXEL_FORMAT__BGR_565: - return wuffs_base__pixel_swizzler__bgr_565__y; - - case WUFFS_BASE__PIXEL_FORMAT__BGR: - case WUFFS_BASE__PIXEL_FORMAT__RGB: - return wuffs_base__pixel_swizzler__xxx__y; - - case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL: - case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL: - case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY: - case WUFFS_BASE__PIXEL_FORMAT__BGRX: - case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL: - case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL: - case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY: - case WUFFS_BASE__PIXEL_FORMAT__RGBX: -#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) - if (wuffs_base__cpu_arch__have_x86_sse42()) { - return wuffs_base__pixel_swizzler__xxxx__y__sse42; - } -#endif - return wuffs_base__pixel_swizzler__xxxx__y; - - case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE: - case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE: - case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL_4X16LE: - case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL_4X16LE: - return wuffs_base__pixel_swizzler__xxxxxxxx__y; - } - return NULL; -} - -static wuffs_base__pixel_swizzler__func // -wuffs_base__pixel_swizzler__prepare__y_16be(wuffs_base__pixel_swizzler* p, - wuffs_base__pixel_format dst_pixfmt, - wuffs_base__slice_u8 dst_palette, - wuffs_base__slice_u8 src_palette, - wuffs_base__pixel_blend blend) { - switch (dst_pixfmt.repr) { - case WUFFS_BASE__PIXEL_FORMAT__Y: - return wuffs_base__pixel_swizzler__y__y_16be; - - case WUFFS_BASE__PIXEL_FORMAT__Y_16LE: - return wuffs_base__pixel_swizzler__y_16le__y_16be; - - case WUFFS_BASE__PIXEL_FORMAT__Y_16BE: - return wuffs_base__pixel_swizzler__copy_2_2; - - case WUFFS_BASE__PIXEL_FORMAT__BGR_565: - return wuffs_base__pixel_swizzler__bgr_565__y_16be; - - case WUFFS_BASE__PIXEL_FORMAT__BGR: - case WUFFS_BASE__PIXEL_FORMAT__RGB: - return wuffs_base__pixel_swizzler__xxx__y_16be; - - case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL: - case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL: - case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY: - case WUFFS_BASE__PIXEL_FORMAT__BGRX: - case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL: - case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL: - case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY: - case WUFFS_BASE__PIXEL_FORMAT__RGBX: - return wuffs_base__pixel_swizzler__xxxx__y_16be; - - case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE: - case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE: - case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL_4X16LE: - case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL_4X16LE: - return wuffs_base__pixel_swizzler__xxxxxxxx__y_16be; - } - return NULL; -} - -static wuffs_base__pixel_swizzler__func // -wuffs_base__pixel_swizzler__prepare__indexed__bgra_nonpremul( - wuffs_base__pixel_swizzler* p, - wuffs_base__pixel_format dst_pixfmt, - wuffs_base__slice_u8 dst_palette, - wuffs_base__slice_u8 src_palette, - wuffs_base__pixel_blend blend) { - switch (dst_pixfmt.repr) { - case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL: - if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) != - WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) { - return NULL; - } - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: - return wuffs_base__pixel_swizzler__copy_1_1; - } - return NULL; - - case WUFFS_BASE__PIXEL_FORMAT__BGR_565: - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: - if (wuffs_base__pixel_swizzler__squash_align4_bgr_565_8888( - dst_palette.ptr, dst_palette.len, src_palette.ptr, - src_palette.len, true) != - (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) { - return NULL; - } - return wuffs_base__pixel_swizzler__bgr_565__index__src; - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) != - WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) { - return NULL; - } - return wuffs_base__pixel_swizzler__bgr_565__index_bgra_nonpremul__src_over; - } - return NULL; - - case WUFFS_BASE__PIXEL_FORMAT__BGR: - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: - if (wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src( - dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr, - src_palette.len) != - (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) { - return NULL; - } - return wuffs_base__pixel_swizzler__xxx__index__src; - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) != - WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) { - return NULL; - } - return wuffs_base__pixel_swizzler__xxx__index_bgra_nonpremul__src_over; - } - return NULL; - - case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL: - if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) != - WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) { - return NULL; - } - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: - return wuffs_base__pixel_swizzler__xxxx__index__src; - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - return wuffs_base__pixel_swizzler__bgra_nonpremul__index_bgra_nonpremul__src_over; - } - return NULL; - - case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE: - if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) != - WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) { - return NULL; - } - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: - return wuffs_base__pixel_swizzler__xxxxxxxx__index__src; - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__index_bgra_nonpremul__src_over; - } - return NULL; - - case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL: - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: - if (wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src( - dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr, - src_palette.len) != - (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) { - return NULL; - } - return wuffs_base__pixel_swizzler__xxxx__index__src; - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) != - WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) { - return NULL; - } - return wuffs_base__pixel_swizzler__bgra_premul__index_bgra_nonpremul__src_over; - } - return NULL; - - case WUFFS_BASE__PIXEL_FORMAT__RGB: - // TODO. - break; - - case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL: - if (wuffs_base__pixel_swizzler__swap_rgbx_bgrx( - dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr, - src_palette.len) != - (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) { - return NULL; - } - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: - return wuffs_base__pixel_swizzler__xxxx__index__src; - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - return wuffs_base__pixel_swizzler__bgra_nonpremul__index_bgra_nonpremul__src_over; - } - return NULL; - - case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL: - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: - if (wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src( - dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr, - src_palette.len) != - (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) { - return NULL; - } - return wuffs_base__pixel_swizzler__xxxx__index__src; - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - if (wuffs_base__pixel_swizzler__swap_rgbx_bgrx( - dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr, - src_palette.len) != - (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) { - return NULL; - } - return wuffs_base__pixel_swizzler__bgra_premul__index_bgra_nonpremul__src_over; - } - return NULL; - - case WUFFS_BASE__PIXEL_FORMAT__RGBX: - // TODO. - break; - } - return NULL; -} - -static wuffs_base__pixel_swizzler__func // -wuffs_base__pixel_swizzler__prepare__indexed__bgra_binary( - wuffs_base__pixel_swizzler* p, - wuffs_base__pixel_format dst_pixfmt, - wuffs_base__slice_u8 dst_palette, - wuffs_base__slice_u8 src_palette, - wuffs_base__pixel_blend blend) { - switch (dst_pixfmt.repr) { - case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL: - case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_PREMUL: - case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY: - if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) != - WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) { - return NULL; - } - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: - return wuffs_base__pixel_swizzler__copy_1_1; - } - return NULL; - - case WUFFS_BASE__PIXEL_FORMAT__BGR_565: - if (wuffs_base__pixel_swizzler__squash_align4_bgr_565_8888( - dst_palette.ptr, dst_palette.len, src_palette.ptr, - src_palette.len, false) != - (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) { - return NULL; - } - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: - return wuffs_base__pixel_swizzler__bgr_565__index__src; - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - return wuffs_base__pixel_swizzler__bgr_565__index_binary_alpha__src_over; - } - return NULL; - - case WUFFS_BASE__PIXEL_FORMAT__BGR: - if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) != - WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) { - return NULL; - } - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: - return wuffs_base__pixel_swizzler__xxx__index__src; - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - return wuffs_base__pixel_swizzler__xxx__index_binary_alpha__src_over; - } - return NULL; - - case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL: - case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL: - case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY: - if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) != - WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) { - return NULL; - } - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: - return wuffs_base__pixel_swizzler__xxxx__index__src; - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - return wuffs_base__pixel_swizzler__xxxx__index_binary_alpha__src_over; - } - return NULL; - - case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE: - case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE: - if (wuffs_base__slice_u8__copy_from_slice(dst_palette, src_palette) != - WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH) { - return NULL; - } - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: - return wuffs_base__pixel_swizzler__xxxxxxxx__index__src; - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - return wuffs_base__pixel_swizzler__xxxxxxxx__index_binary_alpha__src_over; - } - return NULL; - - case WUFFS_BASE__PIXEL_FORMAT__RGB: - if (wuffs_base__pixel_swizzler__swap_rgbx_bgrx( - dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr, - src_palette.len) != - (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) { - return NULL; - } - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: - return wuffs_base__pixel_swizzler__xxx__index__src; - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - return wuffs_base__pixel_swizzler__xxx__index_binary_alpha__src_over; - } - return NULL; - - case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL: - case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL: - case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY: - if (wuffs_base__pixel_swizzler__swap_rgbx_bgrx( - dst_palette.ptr, dst_palette.len, NULL, 0, src_palette.ptr, - src_palette.len) != - (WUFFS_BASE__PIXEL_FORMAT__INDEXED__PALETTE_BYTE_LENGTH / 4)) { - return NULL; - } - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: - return wuffs_base__pixel_swizzler__xxxx__index__src; - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - return wuffs_base__pixel_swizzler__xxxx__index_binary_alpha__src_over; - } - return NULL; - } - return NULL; -} - -static wuffs_base__pixel_swizzler__func // -wuffs_base__pixel_swizzler__prepare__bgr_565( - wuffs_base__pixel_swizzler* p, - wuffs_base__pixel_format dst_pixfmt, - wuffs_base__slice_u8 dst_palette, - wuffs_base__slice_u8 src_palette, - wuffs_base__pixel_blend blend) { - switch (dst_pixfmt.repr) { - case WUFFS_BASE__PIXEL_FORMAT__BGR_565: - return wuffs_base__pixel_swizzler__copy_2_2; - - case WUFFS_BASE__PIXEL_FORMAT__BGR: - return wuffs_base__pixel_swizzler__bgr__bgr_565; - - case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL: - case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL: - case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY: - case WUFFS_BASE__PIXEL_FORMAT__BGRX: - return wuffs_base__pixel_swizzler__bgrw__bgr_565; - - case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE: - case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE: - return wuffs_base__pixel_swizzler__bgrw_4x16le__bgr_565; - - case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL: - case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL: - case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY: - case WUFFS_BASE__PIXEL_FORMAT__RGBX: - return wuffs_base__pixel_swizzler__rgbw__bgr_565; - } - return NULL; -} - -static wuffs_base__pixel_swizzler__func // -wuffs_base__pixel_swizzler__prepare__bgr(wuffs_base__pixel_swizzler* p, - wuffs_base__pixel_format dst_pixfmt, - wuffs_base__slice_u8 dst_palette, - wuffs_base__slice_u8 src_palette, - wuffs_base__pixel_blend blend) { - switch (dst_pixfmt.repr) { - case WUFFS_BASE__PIXEL_FORMAT__BGR_565: - return wuffs_base__pixel_swizzler__bgr_565__bgr; - - case WUFFS_BASE__PIXEL_FORMAT__BGR: - return wuffs_base__pixel_swizzler__copy_3_3; - - case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL: - case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL: - case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY: - case WUFFS_BASE__PIXEL_FORMAT__BGRX: - return wuffs_base__pixel_swizzler__bgrw__bgr; - - case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE: - case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL_4X16LE: - return wuffs_base__pixel_swizzler__bgrw_4x16le__bgr; - - case WUFFS_BASE__PIXEL_FORMAT__RGB: - return wuffs_base__pixel_swizzler__swap_rgb_bgr; - - case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL: - case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL: - case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY: - case WUFFS_BASE__PIXEL_FORMAT__RGBX: -#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) - if (wuffs_base__cpu_arch__have_x86_sse42()) { - return wuffs_base__pixel_swizzler__bgrw__rgb__sse42; - } -#endif - return wuffs_base__pixel_swizzler__bgrw__rgb; - } - return NULL; -} - -static wuffs_base__pixel_swizzler__func // -wuffs_base__pixel_swizzler__prepare__bgra_nonpremul( - wuffs_base__pixel_swizzler* p, - wuffs_base__pixel_format dst_pixfmt, - wuffs_base__slice_u8 dst_palette, - wuffs_base__slice_u8 src_palette, - wuffs_base__pixel_blend blend) { - switch (dst_pixfmt.repr) { - case WUFFS_BASE__PIXEL_FORMAT__BGR_565: - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: - return wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul__src; - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - return wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul__src_over; - } - return NULL; - - case WUFFS_BASE__PIXEL_FORMAT__BGR: - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: - return wuffs_base__pixel_swizzler__bgr__bgra_nonpremul__src; - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - return wuffs_base__pixel_swizzler__bgr__bgra_nonpremul__src_over; - } - return NULL; - - case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL: - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: - return wuffs_base__pixel_swizzler__copy_4_4; - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_nonpremul__src_over; - } - return NULL; - - case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE: - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: - return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_nonpremul__src; - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_nonpremul__src_over; - } - return NULL; - - case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL: - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: - return wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src; - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - return wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src_over; - } - return NULL; - - case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY: - case WUFFS_BASE__PIXEL_FORMAT__BGRX: - // TODO. - break; - - case WUFFS_BASE__PIXEL_FORMAT__RGB: - // TODO. - break; - - case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL: - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: -#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) - if (wuffs_base__cpu_arch__have_x86_sse42()) { - return wuffs_base__pixel_swizzler__swap_rgbx_bgrx__sse42; - } -#endif - return wuffs_base__pixel_swizzler__swap_rgbx_bgrx; - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - return wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_nonpremul__src_over; - } - return NULL; - - case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL: - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: - return wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src; - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - return wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src_over; - } - return NULL; - - case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY: - case WUFFS_BASE__PIXEL_FORMAT__RGBX: - // TODO. - break; - } - return NULL; -} - -static wuffs_base__pixel_swizzler__func // -wuffs_base__pixel_swizzler__prepare__bgra_nonpremul_4x16le( - wuffs_base__pixel_swizzler* p, - wuffs_base__pixel_format dst_pixfmt, - wuffs_base__slice_u8 dst_palette, - wuffs_base__slice_u8 src_palette, - wuffs_base__pixel_blend blend) { - switch (dst_pixfmt.repr) { - case WUFFS_BASE__PIXEL_FORMAT__BGR_565: - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: - return wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul_4x16le__src; - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - return wuffs_base__pixel_swizzler__bgr_565__bgra_nonpremul_4x16le__src_over; - } - return NULL; - - case WUFFS_BASE__PIXEL_FORMAT__BGR: - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: - return wuffs_base__pixel_swizzler__bgr__bgra_nonpremul_4x16le__src; - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - return wuffs_base__pixel_swizzler__bgr__bgra_nonpremul_4x16le__src_over; - } - return NULL; - - case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL: - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: - return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_nonpremul_4x16le__src; - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_nonpremul_4x16le__src_over; - } - return NULL; - - case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE: - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: - return wuffs_base__pixel_swizzler__copy_8_8; - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_nonpremul_4x16le__src_over; - } - return NULL; - - case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL: - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: - return wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul_4x16le__src; - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - return wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul_4x16le__src_over; - } - return NULL; - - case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY: - case WUFFS_BASE__PIXEL_FORMAT__BGRX: - // TODO. - break; - - case WUFFS_BASE__PIXEL_FORMAT__RGB: - // TODO. - break; - - case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL: - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: - return wuffs_base__pixel_swizzler__rgba_nonpremul__bgra_nonpremul_4x16le__src; - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - return wuffs_base__pixel_swizzler__rgba_nonpremul__bgra_nonpremul_4x16le__src_over; - } - break; - - case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL: - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: - return wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul_4x16le__src; - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - return wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul_4x16le__src_over; - } - return NULL; - - case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY: - case WUFFS_BASE__PIXEL_FORMAT__RGBX: - // TODO. - break; - } - return NULL; -} - -static wuffs_base__pixel_swizzler__func // -wuffs_base__pixel_swizzler__prepare__bgra_premul( - wuffs_base__pixel_swizzler* p, - wuffs_base__pixel_format dst_pixfmt, - wuffs_base__slice_u8 dst_palette, - wuffs_base__slice_u8 src_palette, - wuffs_base__pixel_blend blend) { - switch (dst_pixfmt.repr) { - case WUFFS_BASE__PIXEL_FORMAT__BGR_565: - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: - return wuffs_base__pixel_swizzler__bgr_565__bgra_premul__src; - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - return wuffs_base__pixel_swizzler__bgr_565__bgra_premul__src_over; - } - return NULL; - - case WUFFS_BASE__PIXEL_FORMAT__BGR: - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: - return wuffs_base__pixel_swizzler__bgr__bgra_premul__src; - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - return wuffs_base__pixel_swizzler__bgr__bgra_premul__src_over; - } - return NULL; - - case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL: - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: - return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_premul__src; - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_premul__src_over; - } - return NULL; - - case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE: - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: - return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_premul__src; - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__bgra_premul__src_over; - } - return NULL; - - case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL: - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: - return wuffs_base__pixel_swizzler__copy_4_4; - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - return wuffs_base__pixel_swizzler__bgra_premul__bgra_premul__src_over; - } - return NULL; - - case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL: - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: - return wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_premul__src; - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - return wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_premul__src_over; - } - return NULL; - - case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL: - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: -#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) - if (wuffs_base__cpu_arch__have_x86_sse42()) { - return wuffs_base__pixel_swizzler__swap_rgbx_bgrx__sse42; - } -#endif - return wuffs_base__pixel_swizzler__swap_rgbx_bgrx; - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - return wuffs_base__pixel_swizzler__bgra_premul__rgba_premul__src_over; - } - return NULL; - } - return NULL; -} - -static wuffs_base__pixel_swizzler__func // -wuffs_base__pixel_swizzler__prepare__bgrx(wuffs_base__pixel_swizzler* p, - wuffs_base__pixel_format dst_pixfmt, - wuffs_base__slice_u8 dst_palette, - wuffs_base__slice_u8 src_palette, - wuffs_base__pixel_blend blend) { - switch (dst_pixfmt.repr) { - case WUFFS_BASE__PIXEL_FORMAT__BGR_565: - return wuffs_base__pixel_swizzler__bgr_565__bgrx; - - case WUFFS_BASE__PIXEL_FORMAT__BGR: - return wuffs_base__pixel_swizzler__xxx__xxxx; - - case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL: - case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL: - case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY: - return wuffs_base__pixel_swizzler__bgrw__bgrx; - - case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE: - return wuffs_base__pixel_swizzler__bgrw_4x16le__bgrx; - - case WUFFS_BASE__PIXEL_FORMAT__BGRX: - return wuffs_base__pixel_swizzler__copy_4_4; - - case WUFFS_BASE__PIXEL_FORMAT__RGB: - // TODO. - break; - - case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL: - case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL: - case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY: - case WUFFS_BASE__PIXEL_FORMAT__RGBX: - return wuffs_base__pixel_swizzler__bgrw__rgbx; - } - return NULL; -} - -static wuffs_base__pixel_swizzler__func // -wuffs_base__pixel_swizzler__prepare__rgb(wuffs_base__pixel_swizzler* p, - wuffs_base__pixel_format dst_pixfmt, - wuffs_base__slice_u8 dst_palette, - wuffs_base__slice_u8 src_palette, - wuffs_base__pixel_blend blend) { - switch (dst_pixfmt.repr) { - case WUFFS_BASE__PIXEL_FORMAT__BGR_565: - return wuffs_base__pixel_swizzler__bgr_565__rgb; - - case WUFFS_BASE__PIXEL_FORMAT__BGR: - return wuffs_base__pixel_swizzler__swap_rgb_bgr; - - case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL: - case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL: - case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY: - case WUFFS_BASE__PIXEL_FORMAT__BGRX: -#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) - if (wuffs_base__cpu_arch__have_x86_sse42()) { - return wuffs_base__pixel_swizzler__bgrw__rgb__sse42; - } -#endif - return wuffs_base__pixel_swizzler__bgrw__rgb; - - case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE: - return wuffs_base__pixel_swizzler__bgrw_4x16le__rgb; - - case WUFFS_BASE__PIXEL_FORMAT__RGB: - return wuffs_base__pixel_swizzler__copy_3_3; - - case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL: - case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL: - case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY: - case WUFFS_BASE__PIXEL_FORMAT__RGBX: - return wuffs_base__pixel_swizzler__bgrw__bgr; - } - return NULL; -} - -static wuffs_base__pixel_swizzler__func // -wuffs_base__pixel_swizzler__prepare__rgba_nonpremul( - wuffs_base__pixel_swizzler* p, - wuffs_base__pixel_format dst_pixfmt, - wuffs_base__slice_u8 dst_palette, - wuffs_base__slice_u8 src_palette, - wuffs_base__pixel_blend blend) { - switch (dst_pixfmt.repr) { - case WUFFS_BASE__PIXEL_FORMAT__BGR_565: - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: - return wuffs_base__pixel_swizzler__bgr_565__rgba_nonpremul__src; - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - return wuffs_base__pixel_swizzler__bgr_565__rgba_nonpremul__src_over; - } - return NULL; - - case WUFFS_BASE__PIXEL_FORMAT__BGR: - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: - return wuffs_base__pixel_swizzler__bgr__rgba_nonpremul__src; - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - return wuffs_base__pixel_swizzler__bgr__rgba_nonpremul__src_over; - } - return NULL; - - case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL: - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: -#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) - if (wuffs_base__cpu_arch__have_x86_sse42()) { - return wuffs_base__pixel_swizzler__swap_rgbx_bgrx__sse42; - } -#endif - return wuffs_base__pixel_swizzler__swap_rgbx_bgrx; - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - return wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_nonpremul__src_over; - } - return NULL; - - case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE: - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: - return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__rgba_nonpremul__src; - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__rgba_nonpremul__src_over; - } - return NULL; - - case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL: - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: - return wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src; - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - return wuffs_base__pixel_swizzler__bgra_premul__rgba_nonpremul__src_over; - } - return NULL; - - case WUFFS_BASE__PIXEL_FORMAT__BGRA_BINARY: - case WUFFS_BASE__PIXEL_FORMAT__BGRX: - // TODO. - break; - - case WUFFS_BASE__PIXEL_FORMAT__RGB: - // TODO. - break; - - case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL: - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: - return wuffs_base__pixel_swizzler__copy_4_4; - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_nonpremul__src_over; - } - return NULL; - - case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL: - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: - return wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src; - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - return wuffs_base__pixel_swizzler__bgra_premul__bgra_nonpremul__src_over; - } - return NULL; - - case WUFFS_BASE__PIXEL_FORMAT__RGBA_BINARY: - case WUFFS_BASE__PIXEL_FORMAT__RGBX: - // TODO. - break; - } - return NULL; -} - -static wuffs_base__pixel_swizzler__func // -wuffs_base__pixel_swizzler__prepare__rgba_premul( - wuffs_base__pixel_swizzler* p, - wuffs_base__pixel_format dst_pixfmt, - wuffs_base__slice_u8 dst_palette, - wuffs_base__slice_u8 src_palette, - wuffs_base__pixel_blend blend) { - switch (dst_pixfmt.repr) { - case WUFFS_BASE__PIXEL_FORMAT__BGR_565: - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: - return wuffs_base__pixel_swizzler__bgr_565__rgba_premul__src; - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - return wuffs_base__pixel_swizzler__bgr_565__rgba_premul__src_over; - } - return NULL; - - case WUFFS_BASE__PIXEL_FORMAT__BGR: - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: - return wuffs_base__pixel_swizzler__bgr__rgba_premul__src; - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - return wuffs_base__pixel_swizzler__bgr__rgba_premul__src_over; - } - return NULL; - - case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL: - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: - return wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_premul__src; - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - return wuffs_base__pixel_swizzler__bgra_nonpremul__rgba_premul__src_over; - } - return NULL; - - case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE: - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: - return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__rgba_premul__src; - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - return wuffs_base__pixel_swizzler__bgra_nonpremul_4x16le__rgba_premul__src_over; - } - return NULL; - - case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL: - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: -#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) - if (wuffs_base__cpu_arch__have_x86_sse42()) { - return wuffs_base__pixel_swizzler__swap_rgbx_bgrx__sse42; - } -#endif - return wuffs_base__pixel_swizzler__swap_rgbx_bgrx; - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - return wuffs_base__pixel_swizzler__bgra_premul__rgba_premul__src_over; - } - return NULL; - - case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL: - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: - return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_premul__src; - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - return wuffs_base__pixel_swizzler__bgra_nonpremul__bgra_premul__src_over; - } - return NULL; - - case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL: - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: - return wuffs_base__pixel_swizzler__copy_4_4; - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - return wuffs_base__pixel_swizzler__bgra_premul__bgra_premul__src_over; - } - return NULL; - } - return NULL; -} - -// -------- - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status // -wuffs_base__pixel_swizzler__prepare(wuffs_base__pixel_swizzler* p, - wuffs_base__pixel_format dst_pixfmt, - wuffs_base__slice_u8 dst_palette, - wuffs_base__pixel_format src_pixfmt, - wuffs_base__slice_u8 src_palette, - wuffs_base__pixel_blend blend) { - if (!p) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - p->private_impl.func = NULL; - p->private_impl.transparent_black_func = NULL; - p->private_impl.dst_pixfmt_bytes_per_pixel = 0; - p->private_impl.src_pixfmt_bytes_per_pixel = 0; - - wuffs_base__pixel_swizzler__func func = NULL; - wuffs_base__pixel_swizzler__transparent_black_func transparent_black_func = - NULL; - - uint32_t dst_pixfmt_bits_per_pixel = - wuffs_base__pixel_format__bits_per_pixel(&dst_pixfmt); - if ((dst_pixfmt_bits_per_pixel == 0) || - ((dst_pixfmt_bits_per_pixel & 7) != 0)) { - return wuffs_base__make_status( - wuffs_base__error__unsupported_pixel_swizzler_option); - } - - uint32_t src_pixfmt_bits_per_pixel = - wuffs_base__pixel_format__bits_per_pixel(&src_pixfmt); - if ((src_pixfmt_bits_per_pixel == 0) || - ((src_pixfmt_bits_per_pixel & 7) != 0)) { - return wuffs_base__make_status( - wuffs_base__error__unsupported_pixel_swizzler_option); - } - - // TODO: support many more formats. - - switch (blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: - transparent_black_func = - wuffs_base__pixel_swizzler__transparent_black_src; - break; - - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - transparent_black_func = - wuffs_base__pixel_swizzler__transparent_black_src_over; - break; - } - - switch (src_pixfmt.repr) { - case WUFFS_BASE__PIXEL_FORMAT__Y: - func = wuffs_base__pixel_swizzler__prepare__y(p, dst_pixfmt, dst_palette, - src_palette, blend); - break; - - case WUFFS_BASE__PIXEL_FORMAT__Y_16BE: - func = wuffs_base__pixel_swizzler__prepare__y_16be( - p, dst_pixfmt, dst_palette, src_palette, blend); - break; - - case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL: - func = wuffs_base__pixel_swizzler__prepare__indexed__bgra_nonpremul( - p, dst_pixfmt, dst_palette, src_palette, blend); - break; - - case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY: - func = wuffs_base__pixel_swizzler__prepare__indexed__bgra_binary( - p, dst_pixfmt, dst_palette, src_palette, blend); - break; - - case WUFFS_BASE__PIXEL_FORMAT__BGR_565: - func = wuffs_base__pixel_swizzler__prepare__bgr_565( - p, dst_pixfmt, dst_palette, src_palette, blend); - break; - - case WUFFS_BASE__PIXEL_FORMAT__BGR: - func = wuffs_base__pixel_swizzler__prepare__bgr( - p, dst_pixfmt, dst_palette, src_palette, blend); - break; - - case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL: - func = wuffs_base__pixel_swizzler__prepare__bgra_nonpremul( - p, dst_pixfmt, dst_palette, src_palette, blend); - break; - - case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE: - func = wuffs_base__pixel_swizzler__prepare__bgra_nonpremul_4x16le( - p, dst_pixfmt, dst_palette, src_palette, blend); - break; - - case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL: - func = wuffs_base__pixel_swizzler__prepare__bgra_premul( - p, dst_pixfmt, dst_palette, src_palette, blend); - break; - - case WUFFS_BASE__PIXEL_FORMAT__BGRX: - func = wuffs_base__pixel_swizzler__prepare__bgrx( - p, dst_pixfmt, dst_palette, src_palette, blend); - break; - - case WUFFS_BASE__PIXEL_FORMAT__RGB: - func = wuffs_base__pixel_swizzler__prepare__rgb( - p, dst_pixfmt, dst_palette, src_palette, blend); - break; - - case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL: - func = wuffs_base__pixel_swizzler__prepare__rgba_nonpremul( - p, dst_pixfmt, dst_palette, src_palette, blend); - break; - - case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL: - func = wuffs_base__pixel_swizzler__prepare__rgba_premul( - p, dst_pixfmt, dst_palette, src_palette, blend); - break; - } - - p->private_impl.func = func; - p->private_impl.transparent_black_func = transparent_black_func; - p->private_impl.dst_pixfmt_bytes_per_pixel = dst_pixfmt_bits_per_pixel / 8; - p->private_impl.src_pixfmt_bytes_per_pixel = src_pixfmt_bits_per_pixel / 8; - return wuffs_base__make_status( - func ? NULL : wuffs_base__error__unsupported_pixel_swizzler_option); -} - -WUFFS_BASE__MAYBE_STATIC uint64_t // -wuffs_base__pixel_swizzler__limited_swizzle_u32_interleaved_from_reader( - const wuffs_base__pixel_swizzler* p, - uint32_t up_to_num_pixels, - wuffs_base__slice_u8 dst, - wuffs_base__slice_u8 dst_palette, - const uint8_t** ptr_iop_r, - const uint8_t* io2_r) { - if (p && p->private_impl.func) { - const uint8_t* iop_r = *ptr_iop_r; - uint64_t src_len = wuffs_base__u64__min( - ((uint64_t)up_to_num_pixels) * - ((uint64_t)p->private_impl.src_pixfmt_bytes_per_pixel), - ((uint64_t)(io2_r - iop_r))); - uint64_t n = - (*p->private_impl.func)(dst.ptr, dst.len, dst_palette.ptr, - dst_palette.len, iop_r, (size_t)src_len); - *ptr_iop_r += n * p->private_impl.src_pixfmt_bytes_per_pixel; - return n; - } - return 0; -} - -WUFFS_BASE__MAYBE_STATIC uint64_t // -wuffs_base__pixel_swizzler__swizzle_interleaved_from_reader( - const wuffs_base__pixel_swizzler* p, - wuffs_base__slice_u8 dst, - wuffs_base__slice_u8 dst_palette, - const uint8_t** ptr_iop_r, - const uint8_t* io2_r) { - if (p && p->private_impl.func) { - const uint8_t* iop_r = *ptr_iop_r; - uint64_t src_len = ((uint64_t)(io2_r - iop_r)); - uint64_t n = - (*p->private_impl.func)(dst.ptr, dst.len, dst_palette.ptr, - dst_palette.len, iop_r, (size_t)src_len); - *ptr_iop_r += n * p->private_impl.src_pixfmt_bytes_per_pixel; - return n; - } - return 0; -} - -WUFFS_BASE__MAYBE_STATIC uint64_t // -wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice( - const wuffs_base__pixel_swizzler* p, - wuffs_base__slice_u8 dst, - wuffs_base__slice_u8 dst_palette, - wuffs_base__slice_u8 src) { - if (p && p->private_impl.func) { - return (*p->private_impl.func)(dst.ptr, dst.len, dst_palette.ptr, - dst_palette.len, src.ptr, src.len); - } - return 0; -} - -WUFFS_BASE__MAYBE_STATIC uint64_t // -wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black( - const wuffs_base__pixel_swizzler* p, - wuffs_base__slice_u8 dst, - wuffs_base__slice_u8 dst_palette, - uint64_t num_pixels) { - if (p && p->private_impl.transparent_black_func) { - return (*p->private_impl.transparent_black_func)( - dst.ptr, dst.len, dst_palette.ptr, dst_palette.len, num_pixels, - p->private_impl.dst_pixfmt_bytes_per_pixel); - } - return 0; -} - -// -------- - -static inline uint32_t // -wuffs_base__u32__max_of_4(uint32_t a, uint32_t b, uint32_t c, uint32_t d) { - return wuffs_base__u32__max( // - wuffs_base__u32__max(a, b), // - wuffs_base__u32__max(c, d)); -} - -static inline uint32_t // -wuffs_base__u32__min_of_5(uint32_t a, - uint32_t b, - uint32_t c, - uint32_t d, - uint32_t e) { - return wuffs_base__u32__min( // - wuffs_base__u32__min( // - wuffs_base__u32__min(a, b), // - wuffs_base__u32__min(c, d)), // - e); -} - -// -------- - -// wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upsamples to a -// destination slice at least 480 (YCCK) or 672 (YCC) bytes long and whose -// src_len (multiplied by 1, 2, 3 or 4) is positive but no more than that. This -// 480 or 672 length is just under 1/4 or 1/3 of the scratch_buffer_2k slice -// length. Both (480 * 4) = 1920 and (672 * 3) = 2016 are less than 2048. -// -// 480 and 672 are nice round numbers because a JPEG MCU is 1, 2, 3 or 4 blocks -// wide and each block is 8 pixels wide. We have: -// 480 = 1 * 8 * 60, 672 = 1 * 8 * 84 -// 480 = 2 * 8 * 30, 672 = 2 * 8 * 42 -// 480 = 3 * 8 * 20, 672 = 3 * 8 * 28 -// 480 = 4 * 8 * 15, 672 = 4 * 8 * 21 -// -// Box filters are equivalent to nearest neighbor upsampling. These ignore the -// src_ptr_minor, h1v2_bias, first_column and last_column arguments. -// -// Triangle filters use a 3:1 ratio (in 1 dimension), or 9:3:3:1 (in 2 -// dimensions), which is higher quality (less blocky) but also higher -// computational effort. -// -// In theory, we could use triangle filters for any (inv_h, inv_v) combination. -// In practice, matching libjpeg-turbo, we only implement it for the common -// chroma subsampling ratios (YCC420, YCC422 or YCC440), corresponding to an -// (inv_h, inv_v) pair of (2, 2), (2, 1) or (1, 2). -typedef const uint8_t* ( - *wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func)( - uint8_t* dst_ptr, - const uint8_t* src_ptr_major, // Nearest row. - const uint8_t* src_ptr_minor, // Adjacent row, alternating above or below. - size_t src_len, - uint32_t h1v2_bias, - bool first_column, - bool last_column); - -static const uint8_t* // -wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h1vn_box( - uint8_t* dst_ptr, - const uint8_t* src_ptr_major, - const uint8_t* src_ptr_minor_ignored, - size_t src_len, - uint32_t h1v2_bias_ignored, - bool first_column_ignored, - bool last_column_ignored) { - return src_ptr_major; -} - -static const uint8_t* // -wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h2vn_box( - uint8_t* dst_ptr, - const uint8_t* src_ptr_major, - const uint8_t* src_ptr_minor_ignored, - size_t src_len, - uint32_t h1v2_bias_ignored, - bool first_column_ignored, - bool last_column_ignored) { - uint8_t* dp = dst_ptr; - const uint8_t* sp = src_ptr_major; - while (src_len--) { - uint8_t sv = *sp++; - *dp++ = sv; - *dp++ = sv; - } - return dst_ptr; -} - -static const uint8_t* // -wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h3vn_box( - uint8_t* dst_ptr, - const uint8_t* src_ptr_major, - const uint8_t* src_ptr_minor_ignored, - size_t src_len, - uint32_t h1v2_bias_ignored, - bool first_column_ignored, - bool last_column_ignored) { - uint8_t* dp = dst_ptr; - const uint8_t* sp = src_ptr_major; - while (src_len--) { - uint8_t sv = *sp++; - *dp++ = sv; - *dp++ = sv; - *dp++ = sv; - } - return dst_ptr; -} - -static const uint8_t* // -wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h4vn_box( - uint8_t* dst_ptr, - const uint8_t* src_ptr_major, - const uint8_t* src_ptr_minor_ignored, - size_t src_len, - uint32_t h1v2_bias_ignored, - bool first_column_ignored, - bool last_column_ignored) { - uint8_t* dp = dst_ptr; - const uint8_t* sp = src_ptr_major; - while (src_len--) { - uint8_t sv = *sp++; - *dp++ = sv; - *dp++ = sv; - *dp++ = sv; - *dp++ = sv; - } - return dst_ptr; -} - -static const uint8_t* // -wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h1v2_triangle( - uint8_t* dst_ptr, - const uint8_t* src_ptr_major, - const uint8_t* src_ptr_minor, - size_t src_len, - uint32_t h1v2_bias, - bool first_column, - bool last_column) { - uint8_t* dp = dst_ptr; - const uint8_t* sp_major = src_ptr_major; - const uint8_t* sp_minor = src_ptr_minor; - while (src_len--) { - *dp++ = (uint8_t)(((3u * ((uint32_t)(*sp_major++))) + // - (1u * ((uint32_t)(*sp_minor++))) + // - h1v2_bias) >> - 2u); - } - return dst_ptr; -} - -static const uint8_t* // -wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h2v1_triangle( - uint8_t* dst_ptr, - const uint8_t* src_ptr_major, - const uint8_t* src_ptr_minor, - size_t src_len, - uint32_t h1v2_bias_ignored, - bool first_column, - bool last_column) { - uint8_t* dp = dst_ptr; - const uint8_t* sp = src_ptr_major; - - if (first_column) { - src_len--; - if ((src_len <= 0u) && last_column) { - uint8_t sv = *sp++; - *dp++ = sv; - *dp++ = sv; - return dst_ptr; - } - uint32_t svp1 = sp[+1]; - uint8_t sv = *sp++; - *dp++ = sv; - *dp++ = (uint8_t)(((3u * (uint32_t)sv) + svp1 + 2u) >> 2u); - if (src_len <= 0u) { - return dst_ptr; - } - } - - if (last_column) { - src_len--; - } - - for (; src_len > 0u; src_len--) { - uint32_t svm1 = sp[-1]; - uint32_t svp1 = sp[+1]; - uint32_t sv3 = 3u * (uint32_t)(*sp++); - *dp++ = (uint8_t)((sv3 + svm1 + 1u) >> 2u); - *dp++ = (uint8_t)((sv3 + svp1 + 2u) >> 2u); - } - - if (last_column) { - uint32_t svm1 = sp[-1]; - uint8_t sv = *sp++; - *dp++ = (uint8_t)(((3u * (uint32_t)sv) + svm1 + 1u) >> 2u); - *dp++ = sv; - } - - return dst_ptr; -} - -static const uint8_t* // -wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h2v2_triangle( - uint8_t* dst_ptr, - const uint8_t* src_ptr_major, - const uint8_t* src_ptr_minor, - size_t src_len, - uint32_t h1v2_bias_ignored, - bool first_column, - bool last_column) { - uint8_t* dp = dst_ptr; - const uint8_t* sp_major = src_ptr_major; - const uint8_t* sp_minor = src_ptr_minor; - - if (first_column) { - src_len--; - if ((src_len <= 0u) && last_column) { - uint32_t sv = (12u * ((uint32_t)(*sp_major++))) + // - (4u * ((uint32_t)(*sp_minor++))); - *dp++ = (uint8_t)((sv + 8u) >> 4u); - *dp++ = (uint8_t)((sv + 7u) >> 4u); - return dst_ptr; - } - - uint32_t sv_major_m1 = sp_major[-0]; // Clamp offset to zero. - uint32_t sv_minor_m1 = sp_minor[-0]; // Clamp offset to zero. - uint32_t sv_major_p1 = sp_major[+1]; - uint32_t sv_minor_p1 = sp_minor[+1]; - - uint32_t sv = (9u * ((uint32_t)(*sp_major++))) + // - (3u * ((uint32_t)(*sp_minor++))); - *dp++ = (uint8_t)((sv + (3u * sv_major_m1) + (sv_minor_m1) + 8u) >> 4u); - *dp++ = (uint8_t)((sv + (3u * sv_major_p1) + (sv_minor_p1) + 7u) >> 4u); - if (src_len <= 0u) { - return dst_ptr; - } - } - - if (last_column) { - src_len--; - } - - for (; src_len > 0u; src_len--) { - uint32_t sv_major_m1 = sp_major[-1]; - uint32_t sv_minor_m1 = sp_minor[-1]; - uint32_t sv_major_p1 = sp_major[+1]; - uint32_t sv_minor_p1 = sp_minor[+1]; - - uint32_t sv = (9u * ((uint32_t)(*sp_major++))) + // - (3u * ((uint32_t)(*sp_minor++))); - *dp++ = (uint8_t)((sv + (3u * sv_major_m1) + (sv_minor_m1) + 8u) >> 4u); - *dp++ = (uint8_t)((sv + (3u * sv_major_p1) + (sv_minor_p1) + 7u) >> 4u); - } - - if (last_column) { - uint32_t sv_major_m1 = sp_major[-1]; - uint32_t sv_minor_m1 = sp_minor[-1]; - uint32_t sv_major_p1 = sp_major[+0]; // Clamp offset to zero. - uint32_t sv_minor_p1 = sp_minor[+0]; // Clamp offset to zero. - - uint32_t sv = (9u * ((uint32_t)(*sp_major++))) + // - (3u * ((uint32_t)(*sp_minor++))); - *dp++ = (uint8_t)((sv + (3u * sv_major_m1) + (sv_minor_m1) + 8u) >> 4u); - *dp++ = (uint8_t)((sv + (3u * sv_major_p1) + (sv_minor_p1) + 7u) >> 4u); - } - - return dst_ptr; -} - -// wuffs_base__pixel_swizzler__swizzle_ycc__upsample_funcs is indexed by inv_h -// and then inv_v. -static const wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func - wuffs_base__pixel_swizzler__swizzle_ycc__upsample_funcs[4][4] = { - { - wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h1vn_box, - wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h1v2_triangle, - wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h1vn_box, - wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h1vn_box, - }, - { - wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h2v1_triangle, - wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h2v2_triangle, - wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h2vn_box, - wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h2vn_box, - }, - { - wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h3vn_box, - wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h3vn_box, - wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h3vn_box, - wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h3vn_box, - }, - { - wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h4vn_box, - wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h4vn_box, - wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h4vn_box, - wuffs_base__pixel_swizzler__swizzle_ycc__upsample_inv_h4vn_box, - }, -}; - -static inline uint32_t // -wuffs_base__pixel_swizzler__has_triangle_upsampler(uint32_t inv_h, - uint32_t inv_v) { - if (inv_h == 1u) { - return inv_v == 2u; - } else if (inv_h == 2u) { - return (inv_v == 1u) || (inv_v == 2u); - } - return false; -} - -// -------- - -// All of the wuffs_base__pixel_swizzler__swizzle_ycc__etc functions have -// preconditions. See all of the checks made in -// wuffs_base__pixel_swizzler__swizzle_ycck before calling these functions. For -// example, (width > 0) is a precondition, but there are many more. - -static void // -wuffs_base__pixel_swizzler__swizzle_ycc__general__triangle_filter_edge_row( - wuffs_base__pixel_buffer* dst, - uint32_t width, - uint32_t y, - const uint8_t* src_ptr0, - const uint8_t* src_ptr1, - const uint8_t* src_ptr2, - uint32_t stride0, - uint32_t stride1, - uint32_t stride2, - uint32_t inv_h0, - uint32_t inv_h1, - uint32_t inv_h2, - uint32_t inv_v0, - uint32_t inv_v1, - uint32_t inv_v2, - uint32_t half_width_for_2to1, - uint32_t h1v2_bias, - uint8_t* scratch_buffer_2k_ptr, - wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc0, - wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc1, - wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc2) { - const uint8_t* src0 = src_ptr0 + ((y / inv_v0) * (size_t)stride0); - const uint8_t* src1 = src_ptr1 + ((y / inv_v1) * (size_t)stride1); - const uint8_t* src2 = src_ptr2 + ((y / inv_v2) * (size_t)stride2); - uint32_t total_src_len0 = 0u; - uint32_t total_src_len1 = 0u; - uint32_t total_src_len2 = 0u; - - uint32_t x = 0u; - while (x < width) { - bool first_column = x == 0u; - uint32_t end = x + 672u; - if (end > width) { - end = width; - } - - uint32_t src_len0 = ((end - x) + inv_h0 - 1u) / inv_h0; - uint32_t src_len1 = ((end - x) + inv_h1 - 1u) / inv_h1; - uint32_t src_len2 = ((end - x) + inv_h2 - 1u) / inv_h2; - total_src_len0 += src_len0; - total_src_len1 += src_len1; - total_src_len2 += src_len2; - - const uint8_t* src_ptr_x0 = src0 + (x / inv_h0); - const uint8_t* up0 = (*upfunc0)( // - scratch_buffer_2k_ptr + (0u * 672u), // - src_ptr_x0, // - src_ptr_x0, // - src_len0, // - h1v2_bias, // - first_column, // - (total_src_len0 >= half_width_for_2to1)); - - const uint8_t* src_ptr_x1 = src1 + (x / inv_h1); - const uint8_t* up1 = (*upfunc1)( // - scratch_buffer_2k_ptr + (1u * 672u), // - src_ptr_x1, // - src_ptr_x1, // - src_len1, // - h1v2_bias, // - first_column, // - (total_src_len1 >= half_width_for_2to1)); - - const uint8_t* src_ptr_x2 = src2 + (x / inv_h2); - const uint8_t* up2 = (*upfunc2)( // - scratch_buffer_2k_ptr + (2u * 672u), // - src_ptr_x2, // - src_ptr_x2, // - src_len2, // - h1v2_bias, // - first_column, // - (total_src_len2 >= half_width_for_2to1)); - - for (; x < end; x++) { - wuffs_base__pixel_buffer__set_color_u32_at( - dst, x, y, - wuffs_base__color_ycc__as__color_u32(*up0++, *up1++, *up2++)); - } - } -} - -static void // -wuffs_base__pixel_swizzler__swizzle_ycc__general__triangle_filter( - wuffs_base__pixel_buffer* dst, - uint32_t width, - uint32_t height, - const uint8_t* src_ptr0, - const uint8_t* src_ptr1, - const uint8_t* src_ptr2, - uint32_t stride0, - uint32_t stride1, - uint32_t stride2, - uint32_t inv_h0, - uint32_t inv_h1, - uint32_t inv_h2, - uint32_t inv_v0, - uint32_t inv_v1, - uint32_t inv_v2, - uint32_t half_width_for_2to1, - uint32_t half_height_for_2to1, - uint8_t* scratch_buffer_2k_ptr) { - wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc0 = - wuffs_base__pixel_swizzler__swizzle_ycc__upsample_funcs - [(inv_h0 - 1u) & 3u][(inv_v0 - 1u) & 3u]; - wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc1 = - wuffs_base__pixel_swizzler__swizzle_ycc__upsample_funcs - [(inv_h1 - 1u) & 3u][(inv_v1 - 1u) & 3u]; - wuffs_base__pixel_swizzler__swizzle_ycc__upsample_func upfunc2 = - wuffs_base__pixel_swizzler__swizzle_ycc__upsample_funcs - [(inv_h2 - 1u) & 3u][(inv_v2 - 1u) & 3u]; - - // First row. - uint32_t h1v2_bias = 1u; - wuffs_base__pixel_swizzler__swizzle_ycc__general__triangle_filter_edge_row( - dst, width, 0u, // - src_ptr0, src_ptr1, src_ptr2, // - stride0, stride1, stride2, // - inv_h0, inv_h1, inv_h2, // - inv_v0, inv_v1, inv_v2, // - half_width_for_2to1, // - h1v2_bias, // - scratch_buffer_2k_ptr, // - upfunc0, upfunc1, upfunc2); - h1v2_bias = 2u; - - // Middle rows. - bool last_row = height == 2u * half_height_for_2to1; - uint32_t y_max_excl = last_row ? (height - 1u) : height; - uint32_t y; - for (y = 1u; y < y_max_excl; y++) { - const uint8_t* src0_major = src_ptr0 + ((y / inv_v0) * (size_t)stride0); - const uint8_t* src0_minor = - (inv_v0 != 2u) - ? src0_major - : ((y & 1u) ? (src0_major + stride0) : (src0_major - stride0)); - const uint8_t* src1_major = src_ptr1 + ((y / inv_v1) * (size_t)stride1); - const uint8_t* src1_minor = - (inv_v1 != 2u) - ? src1_major - : ((y & 1u) ? (src1_major + stride1) : (src1_major - stride1)); - const uint8_t* src2_major = src_ptr2 + ((y / inv_v2) * (size_t)stride2); - const uint8_t* src2_minor = - (inv_v2 != 2u) - ? src2_major - : ((y & 1u) ? (src2_major + stride2) : (src2_major - stride2)); - uint32_t total_src_len0 = 0u; - uint32_t total_src_len1 = 0u; - uint32_t total_src_len2 = 0u; - - uint32_t x = 0u; - while (x < width) { - bool first_column = x == 0u; - uint32_t end = x + 672u; - if (end > width) { - end = width; - } - - uint32_t src_len0 = ((end - x) + inv_h0 - 1u) / inv_h0; - uint32_t src_len1 = ((end - x) + inv_h1 - 1u) / inv_h1; - uint32_t src_len2 = ((end - x) + inv_h2 - 1u) / inv_h2; - total_src_len0 += src_len0; - total_src_len1 += src_len1; - total_src_len2 += src_len2; - - const uint8_t* up0 = (*upfunc0)( // - scratch_buffer_2k_ptr + (0u * 672u), // - src0_major + (x / inv_h0), // - src0_minor + (x / inv_h0), // - src_len0, // - h1v2_bias, // - first_column, // - (total_src_len0 >= half_width_for_2to1)); - - const uint8_t* up1 = (*upfunc1)( // - scratch_buffer_2k_ptr + (1u * 672u), // - src1_major + (x / inv_h1), // - src1_minor + (x / inv_h1), // - src_len1, // - h1v2_bias, // - first_column, // - (total_src_len1 >= half_width_for_2to1)); - - const uint8_t* up2 = (*upfunc2)( // - scratch_buffer_2k_ptr + (2u * 672u), // - src2_major + (x / inv_h2), // - src2_minor + (x / inv_h2), // - src_len2, // - h1v2_bias, // - first_column, // - (total_src_len2 >= half_width_for_2to1)); - - for (; x < end; x++) { - wuffs_base__pixel_buffer__set_color_u32_at( - dst, x, y, - wuffs_base__color_ycc__as__color_u32(*up0++, *up1++, *up2++)); - } - } - - h1v2_bias ^= 3u; - } - - // Last row. - if (y_max_excl != height) { - wuffs_base__pixel_swizzler__swizzle_ycc__general__triangle_filter_edge_row( - dst, width, height - 1u, // - src_ptr0, src_ptr1, src_ptr2, // - stride0, stride1, stride2, // - inv_h0, inv_h1, inv_h2, // - inv_v0, inv_v1, inv_v2, // - half_width_for_2to1, // - h1v2_bias, // - scratch_buffer_2k_ptr, // - upfunc0, upfunc1, upfunc2); - } -} - -static void // -wuffs_base__pixel_swizzler__swizzle_ycc__general__box_filter( - wuffs_base__pixel_buffer* dst, - uint32_t width, - uint32_t height, - const uint8_t* src_ptr0, - const uint8_t* src_ptr1, - const uint8_t* src_ptr2, - uint32_t stride0, - uint32_t stride1, - uint32_t stride2, - uint32_t inv_h0, - uint32_t inv_h1, - uint32_t inv_h2, - uint32_t inv_v0, - uint32_t inv_v1, - uint32_t inv_v2) { - // Convert an inv_h or inv_v value from {1, 2, 3, 4} to {12, 6, 4, 3}. - uint32_t h0_out_of_12 = 12u / inv_h0; - uint32_t h1_out_of_12 = 12u / inv_h1; - uint32_t h2_out_of_12 = 12u / inv_h2; - uint32_t v0_out_of_12 = 12u / inv_v0; - uint32_t v1_out_of_12 = 12u / inv_v1; - uint32_t v2_out_of_12 = 12u / inv_v2; - - uint32_t iy0 = 0u; - uint32_t iy1 = 0u; - uint32_t iy2 = 0u; - uint32_t y = 0u; - while (true) { - const uint8_t* src_iter0 = src_ptr0; - const uint8_t* src_iter1 = src_ptr1; - const uint8_t* src_iter2 = src_ptr2; - - uint32_t ix0 = 0u; - uint32_t ix1 = 0u; - uint32_t ix2 = 0u; - uint32_t x = 0u; - while (true) { - wuffs_base__pixel_buffer__set_color_u32_at( - dst, x, y, - wuffs_base__color_ycc__as__color_u32(*src_iter0, *src_iter1, - *src_iter2)); - - if ((x + 1u) == width) { - break; - } - x = x + 1u; - ix0 += h0_out_of_12; - if (ix0 >= 12u) { - ix0 = 0u; - src_iter0++; - } - ix1 += h1_out_of_12; - if (ix1 >= 12u) { - ix1 = 0u; - src_iter1++; - } - ix2 += h2_out_of_12; - if (ix2 >= 12u) { - ix2 = 0u; - src_iter2++; - } - } - - if ((y + 1u) == height) { - break; - } - y = y + 1u; - iy0 += v0_out_of_12; - if (iy0 >= 12u) { - iy0 = 0u; - src_ptr0 += stride0; - } - iy1 += v1_out_of_12; - if (iy1 >= 12u) { - iy1 = 0u; - src_ptr1 += stride1; - } - iy2 += v2_out_of_12; - if (iy2 >= 12u) { - iy2 = 0u; - src_ptr2 += stride2; - } - } -} - -// -------- - -// wuffs_base__pixel_swizzler__flattened_length is like -// wuffs_base__table__flattened_length but returns uint64_t (not size_t) and -// also accounts for subsampling. -static uint64_t // -wuffs_base__pixel_swizzler__flattened_length(uint32_t width, - uint32_t height, - uint32_t stride, - uint32_t inv_h, - uint32_t inv_v) { - uint64_t scaled_width = (((uint64_t)width) + (inv_h - 1u)) / inv_h; - uint64_t scaled_height = (((uint64_t)height) + (inv_v - 1u)) / inv_v; - if (scaled_height <= 0u) { - return 0u; - } - return ((scaled_height - 1u) * stride) + scaled_width; -} - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status // -wuffs_base__pixel_swizzler__swizzle_ycck( - const wuffs_base__pixel_swizzler* p, - wuffs_base__pixel_buffer* dst, - wuffs_base__slice_u8 dst_palette, - uint32_t width, - uint32_t height, - wuffs_base__slice_u8 src0, - wuffs_base__slice_u8 src1, - wuffs_base__slice_u8 src2, - wuffs_base__slice_u8 src3, - uint32_t width0, - uint32_t width1, - uint32_t width2, - uint32_t width3, - uint32_t height0, - uint32_t height1, - uint32_t height2, - uint32_t height3, - uint32_t stride0, - uint32_t stride1, - uint32_t stride2, - uint32_t stride3, - uint8_t h0, - uint8_t h1, - uint8_t h2, - uint8_t h3, - uint8_t v0, - uint8_t v1, - uint8_t v2, - uint8_t v3, - bool triangle_filter_for_2to1, - wuffs_base__slice_u8 scratch_buffer_2k) { - if (!p) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } else if ((h3 != 0u) || (v3 != 0u)) { - // TODO: support the K in YCCK. - return wuffs_base__make_status( - wuffs_base__error__unsupported_pixel_swizzler_option); - } else if (!dst || (width > 0xFFFFu) || (height > 0xFFFFu) || // - (4u <= ((unsigned int)h0 - 1u)) || // - (4u <= ((unsigned int)h1 - 1u)) || // - (4u <= ((unsigned int)h2 - 1u)) || // - (4u <= ((unsigned int)v0 - 1u)) || // - (4u <= ((unsigned int)v1 - 1u)) || // - (4u <= ((unsigned int)v2 - 1u)) || // - (scratch_buffer_2k.len < 2048u)) { - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - - uint32_t max_incl_h = wuffs_base__u32__max_of_4(h0, h1, h2, h3); - uint32_t max_incl_v = wuffs_base__u32__max_of_4(v0, v1, v2, v3); - - // Calculate the inverse h and v ratios. - // - // It also canonicalizes (h=2 and max_incl_h=4) as equivalent to (h=1 and - // max_incl_h=2). In both cases, the inv_h value is 2. - uint32_t inv_h0 = max_incl_h / h0; - uint32_t inv_h1 = max_incl_h / h1; - uint32_t inv_h2 = max_incl_h / h2; - uint32_t inv_v0 = max_incl_v / v0; - uint32_t inv_v1 = max_incl_v / v1; - uint32_t inv_v2 = max_incl_v / v2; - - uint32_t half_width_for_2to1 = (width + 1u) / 2u; - uint32_t half_height_for_2to1 = (height + 1u) / 2u; - - width = wuffs_base__u32__min_of_5( // - width, // - width0 * inv_h0, // - width1 * inv_h1, // - width2 * inv_h2, // - wuffs_base__pixel_config__width(&dst->pixcfg)); - height = wuffs_base__u32__min_of_5( // - height, // - height0 * inv_v0, // - height1 * inv_v1, // - height2 * inv_v2, // - wuffs_base__pixel_config__height(&dst->pixcfg)); - - if (((h0 * inv_h0) != max_incl_h) || // - ((h1 * inv_h1) != max_incl_h) || // - ((h2 * inv_h2) != max_incl_h) || // - ((v0 * inv_v0) != max_incl_v) || // - ((v1 * inv_v1) != max_incl_v) || // - ((v2 * inv_v2) != max_incl_v) || // - (src0.len < wuffs_base__pixel_swizzler__flattened_length( - width, height, stride0, inv_h0, inv_v0)) || - (src1.len < wuffs_base__pixel_swizzler__flattened_length( - width, height, stride1, inv_h1, inv_v1)) || - (src2.len < wuffs_base__pixel_swizzler__flattened_length( - width, height, stride2, inv_h2, inv_v2))) { - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - - if (wuffs_base__pixel_format__is_planar(&dst->pixcfg.private_impl.pixfmt)) { - // TODO: see wuffs_base__pixel_buffer__set_color_u32_at's TODO. - return wuffs_base__make_status( - wuffs_base__error__unsupported_pixel_swizzler_option); - } - - switch (dst->pixcfg.private_impl.pixfmt.repr) { - case WUFFS_BASE__PIXEL_FORMAT__Y: - case WUFFS_BASE__PIXEL_FORMAT__Y_16LE: - case WUFFS_BASE__PIXEL_FORMAT__Y_16BE: - case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_NONPREMUL: - case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_PREMUL: - case WUFFS_BASE__PIXEL_FORMAT__INDEXED__BGRA_BINARY: - case WUFFS_BASE__PIXEL_FORMAT__BGR_565: - case WUFFS_BASE__PIXEL_FORMAT__BGR: - case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL: - case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE: - case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL: - case WUFFS_BASE__PIXEL_FORMAT__BGRX: - case WUFFS_BASE__PIXEL_FORMAT__RGB: - case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL: - case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL: - case WUFFS_BASE__PIXEL_FORMAT__RGBX: - break; - - default: - // TODO: see wuffs_base__pixel_buffer__set_color_u32_at's TODO. - return wuffs_base__make_status( - wuffs_base__error__unsupported_pixel_swizzler_option); - } - - if ((width <= 0u) || (height <= 0u)) { - return wuffs_base__make_status(NULL); - } - - if (triangle_filter_for_2to1 && - (wuffs_base__pixel_swizzler__has_triangle_upsampler(inv_h0, inv_v0) || - wuffs_base__pixel_swizzler__has_triangle_upsampler(inv_h1, inv_v1) || - wuffs_base__pixel_swizzler__has_triangle_upsampler(inv_h2, inv_v2))) { - wuffs_base__pixel_swizzler__swizzle_ycc__general__triangle_filter( - dst, width, height, // - src0.ptr, src1.ptr, src2.ptr, // - stride0, stride1, stride2, // - inv_h0, inv_h1, inv_h2, // - inv_v0, inv_v1, inv_v2, // - half_width_for_2to1, half_height_for_2to1, // - scratch_buffer_2k.ptr); - - } else { - wuffs_base__pixel_swizzler__swizzle_ycc__general__box_filter( - dst, width, height, // - src0.ptr, src1.ptr, src2.ptr, // - stride0, stride1, stride2, // - inv_h0, inv_h1, inv_h2, // - inv_v0, inv_v1, inv_v2); - } - - return wuffs_base__make_status(NULL); -} - -#endif // !defined(WUFFS_CONFIG__MODULES) || - // defined(WUFFS_CONFIG__MODULE__BASE) || - // defined(WUFFS_CONFIG__MODULE__BASE__PIXCONV) - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BASE) || \ - defined(WUFFS_CONFIG__MODULE__BASE__UTF8) - -// ---------------- Unicode and UTF-8 - -WUFFS_BASE__MAYBE_STATIC size_t // -wuffs_base__utf_8__encode(wuffs_base__slice_u8 dst, uint32_t code_point) { - if (code_point <= 0x7F) { - if (dst.len >= 1) { - dst.ptr[0] = (uint8_t)(code_point); - return 1; - } - - } else if (code_point <= 0x07FF) { - if (dst.len >= 2) { - dst.ptr[0] = (uint8_t)(0xC0 | ((code_point >> 6))); - dst.ptr[1] = (uint8_t)(0x80 | ((code_point >> 0) & 0x3F)); - return 2; - } - - } else if (code_point <= 0xFFFF) { - if ((dst.len >= 3) && ((code_point < 0xD800) || (0xDFFF < code_point))) { - dst.ptr[0] = (uint8_t)(0xE0 | ((code_point >> 12))); - dst.ptr[1] = (uint8_t)(0x80 | ((code_point >> 6) & 0x3F)); - dst.ptr[2] = (uint8_t)(0x80 | ((code_point >> 0) & 0x3F)); - return 3; - } - - } else if (code_point <= 0x10FFFF) { - if (dst.len >= 4) { - dst.ptr[0] = (uint8_t)(0xF0 | ((code_point >> 18))); - dst.ptr[1] = (uint8_t)(0x80 | ((code_point >> 12) & 0x3F)); - dst.ptr[2] = (uint8_t)(0x80 | ((code_point >> 6) & 0x3F)); - dst.ptr[3] = (uint8_t)(0x80 | ((code_point >> 0) & 0x3F)); - return 4; - } - } - - return 0; -} - -// wuffs_base__utf_8__byte_length_minus_1 is the byte length (minus 1) of a -// UTF-8 encoded code point, based on the encoding's initial byte. -// - 0x00 is 1-byte UTF-8 (ASCII). -// - 0x01 is the start of 2-byte UTF-8. -// - 0x02 is the start of 3-byte UTF-8. -// - 0x03 is the start of 4-byte UTF-8. -// - 0x40 is a UTF-8 tail byte. -// - 0x80 is invalid UTF-8. -// -// RFC 3629 (UTF-8) gives this grammar for valid UTF-8: -// UTF8-1 = %x00-7F -// UTF8-2 = %xC2-DF UTF8-tail -// UTF8-3 = %xE0 %xA0-BF UTF8-tail / %xE1-EC 2( UTF8-tail ) / -// %xED %x80-9F UTF8-tail / %xEE-EF 2( UTF8-tail ) -// UTF8-4 = %xF0 %x90-BF 2( UTF8-tail ) / %xF1-F3 3( UTF8-tail ) / -// %xF4 %x80-8F 2( UTF8-tail ) -// UTF8-tail = %x80-BF -static const uint8_t wuffs_base__utf_8__byte_length_minus_1[256] = { - // 0 1 2 3 4 5 6 7 - // 8 9 A B C D E F - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x00 ..= 0x07. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x08 ..= 0x0F. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x10 ..= 0x17. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x18 ..= 0x1F. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x20 ..= 0x27. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x28 ..= 0x2F. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x30 ..= 0x37. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x38 ..= 0x3F. - - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x40 ..= 0x47. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x48 ..= 0x4F. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x50 ..= 0x57. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x58 ..= 0x5F. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x60 ..= 0x67. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x68 ..= 0x6F. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x70 ..= 0x77. - 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // 0x78 ..= 0x7F. - - 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, // 0x80 ..= 0x87. - 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, // 0x88 ..= 0x8F. - 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, // 0x90 ..= 0x97. - 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, // 0x98 ..= 0x9F. - 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, // 0xA0 ..= 0xA7. - 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, // 0xA8 ..= 0xAF. - 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, // 0xB0 ..= 0xB7. - 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, 0x40, // 0xB8 ..= 0xBF. - - 0x80, 0x80, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, // 0xC0 ..= 0xC7. - 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, // 0xC8 ..= 0xCF. - 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, // 0xD0 ..= 0xD7. - 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, // 0xD8 ..= 0xDF. - 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, // 0xE0 ..= 0xE7. - 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, 0x02, // 0xE8 ..= 0xEF. - 0x03, 0x03, 0x03, 0x03, 0x03, 0x80, 0x80, 0x80, // 0xF0 ..= 0xF7. - 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, // 0xF8 ..= 0xFF. - // 0 1 2 3 4 5 6 7 - // 8 9 A B C D E F -}; - -WUFFS_BASE__MAYBE_STATIC wuffs_base__utf_8__next__output // -wuffs_base__utf_8__next(const uint8_t* s_ptr, size_t s_len) { - if (s_len == 0) { - return wuffs_base__make_utf_8__next__output(0, 0); - } - uint32_t c = s_ptr[0]; - switch (wuffs_base__utf_8__byte_length_minus_1[c & 0xFF]) { - case 0: - return wuffs_base__make_utf_8__next__output(c, 1); - - case 1: - if (s_len < 2) { - break; - } - c = wuffs_base__peek_u16le__no_bounds_check(s_ptr); - if ((c & 0xC000) != 0x8000) { - break; - } - c = (0x0007C0 & (c << 6)) | (0x00003F & (c >> 8)); - return wuffs_base__make_utf_8__next__output(c, 2); - - case 2: - if (s_len < 3) { - break; - } - c = wuffs_base__peek_u24le__no_bounds_check(s_ptr); - if ((c & 0xC0C000) != 0x808000) { - break; - } - c = (0x00F000 & (c << 12)) | (0x000FC0 & (c >> 2)) | - (0x00003F & (c >> 16)); - if ((c <= 0x07FF) || ((0xD800 <= c) && (c <= 0xDFFF))) { - break; - } - return wuffs_base__make_utf_8__next__output(c, 3); - - case 3: - if (s_len < 4) { - break; - } - c = wuffs_base__peek_u32le__no_bounds_check(s_ptr); - if ((c & 0xC0C0C000) != 0x80808000) { - break; - } - c = (0x1C0000 & (c << 18)) | (0x03F000 & (c << 4)) | - (0x000FC0 & (c >> 10)) | (0x00003F & (c >> 24)); - if ((c <= 0xFFFF) || (0x110000 <= c)) { - break; - } - return wuffs_base__make_utf_8__next__output(c, 4); - } - - return wuffs_base__make_utf_8__next__output( - WUFFS_BASE__UNICODE_REPLACEMENT_CHARACTER, 1); -} - -WUFFS_BASE__MAYBE_STATIC wuffs_base__utf_8__next__output // -wuffs_base__utf_8__next_from_end(const uint8_t* s_ptr, size_t s_len) { - if (s_len == 0) { - return wuffs_base__make_utf_8__next__output(0, 0); - } - const uint8_t* ptr = &s_ptr[s_len - 1]; - if (*ptr < 0x80) { - return wuffs_base__make_utf_8__next__output(*ptr, 1); - - } else if (*ptr < 0xC0) { - const uint8_t* too_far = &s_ptr[(s_len > 4) ? (s_len - 4) : 0]; - uint32_t n = 1; - while (ptr != too_far) { - ptr--; - n++; - if (*ptr < 0x80) { - break; - } else if (*ptr < 0xC0) { - continue; - } - wuffs_base__utf_8__next__output o = wuffs_base__utf_8__next(ptr, n); - if (o.byte_length != n) { - break; - } - return o; - } - } - - return wuffs_base__make_utf_8__next__output( - WUFFS_BASE__UNICODE_REPLACEMENT_CHARACTER, 1); -} - -WUFFS_BASE__MAYBE_STATIC size_t // -wuffs_base__utf_8__longest_valid_prefix(const uint8_t* s_ptr, size_t s_len) { - // TODO: possibly optimize the all-ASCII case (4 or 8 bytes at a time). - // - // TODO: possibly optimize this by manually inlining the - // wuffs_base__utf_8__next calls. - size_t original_len = s_len; - while (s_len > 0) { - wuffs_base__utf_8__next__output o = wuffs_base__utf_8__next(s_ptr, s_len); - if ((o.code_point > 0x7F) && (o.byte_length == 1)) { - break; - } - s_ptr += o.byte_length; - s_len -= o.byte_length; - } - return original_len - s_len; -} - -WUFFS_BASE__MAYBE_STATIC size_t // -wuffs_base__ascii__longest_valid_prefix(const uint8_t* s_ptr, size_t s_len) { - // TODO: possibly optimize this by checking 4 or 8 bytes at a time. - const uint8_t* original_ptr = s_ptr; - const uint8_t* p = s_ptr; - const uint8_t* q = s_ptr + s_len; - for (; (p != q) && ((*p & 0x80) == 0); p++) { - } - return (size_t)(p - original_ptr); -} - -#endif // !defined(WUFFS_CONFIG__MODULES) || - // defined(WUFFS_CONFIG__MODULE__BASE) || - // defined(WUFFS_CONFIG__MODULE__BASE__UTF8) - -#ifdef __cplusplus -} // extern "C" -#endif - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__ADLER32) - -// ---------------- Status Codes Implementations - -// ---------------- Private Consts - -// ---------------- Private Initializer Prototypes - -// ---------------- Private Function Prototypes - -static wuffs_base__empty_struct -wuffs_adler32__hasher__up( - wuffs_adler32__hasher* self, - wuffs_base__slice_u8 a_x); - -static wuffs_base__empty_struct -wuffs_adler32__hasher__up__choosy_default( - wuffs_adler32__hasher* self, - wuffs_base__slice_u8 a_x); - -#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) -static wuffs_base__empty_struct -wuffs_adler32__hasher__up_arm_neon( - wuffs_adler32__hasher* self, - wuffs_base__slice_u8 a_x); -#endif // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) - -#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) -static wuffs_base__empty_struct -wuffs_adler32__hasher__up_x86_sse42( - wuffs_adler32__hasher* self, - wuffs_base__slice_u8 a_x); -#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) - -// ---------------- VTables - -const wuffs_base__hasher_u32__func_ptrs -wuffs_adler32__hasher__func_ptrs_for__wuffs_base__hasher_u32 = { - (wuffs_base__status(*)(void*, - uint32_t, - uint64_t))(&wuffs_adler32__hasher__set_quirk), - (uint32_t(*)(void*, - wuffs_base__slice_u8))(&wuffs_adler32__hasher__update_u32), -}; - -// ---------------- Initializer Implementations - -wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT -wuffs_adler32__hasher__initialize( - wuffs_adler32__hasher* self, - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options){ - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (sizeof(*self) != sizeof_star_self) { - return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver); - } - if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) || - (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) { - return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version); - } - - if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) { - // The whole point of this if-check is to detect an uninitialized *self. - // We disable the warning on GCC. Clang-5.0 does not have this warning. -#if !defined(__clang__) && defined(__GNUC__) -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wmaybe-uninitialized" -#endif - if (self->private_impl.magic != 0) { - return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed); - } -#if !defined(__clang__) && defined(__GNUC__) -#pragma GCC diagnostic pop -#endif - } else { - if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) { - memset(self, 0, sizeof(*self)); - options |= WUFFS_INITIALIZE__ALREADY_ZEROED; - } else { - memset(&(self->private_impl), 0, sizeof(self->private_impl)); - } - } - - self->private_impl.choosy_up = &wuffs_adler32__hasher__up__choosy_default; - - self->private_impl.magic = WUFFS_BASE__MAGIC; - self->private_impl.vtable_for__wuffs_base__hasher_u32.vtable_name = - wuffs_base__hasher_u32__vtable_name; - self->private_impl.vtable_for__wuffs_base__hasher_u32.function_pointers = - (const void*)(&wuffs_adler32__hasher__func_ptrs_for__wuffs_base__hasher_u32); - return wuffs_base__make_status(NULL); -} - -wuffs_adler32__hasher* -wuffs_adler32__hasher__alloc() { - wuffs_adler32__hasher* x = - (wuffs_adler32__hasher*)(calloc(sizeof(wuffs_adler32__hasher), 1)); - if (!x) { - return NULL; - } - if (wuffs_adler32__hasher__initialize( - x, sizeof(wuffs_adler32__hasher), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) { - free(x); - return NULL; - } - return x; -} - -size_t -sizeof__wuffs_adler32__hasher() { - return sizeof(wuffs_adler32__hasher); -} - -// ---------------- Function Implementations - -// -------- func adler32.hasher.set_quirk - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_adler32__hasher__set_quirk( - wuffs_adler32__hasher* self, - uint32_t a_key, - uint64_t a_value) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - - return wuffs_base__make_status(wuffs_base__error__unsupported_option); -} - -// -------- func adler32.hasher.update_u32 - -WUFFS_BASE__MAYBE_STATIC uint32_t -wuffs_adler32__hasher__update_u32( - wuffs_adler32__hasher* self, - wuffs_base__slice_u8 a_x) { - if (!self) { - return 0; - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return 0; - } - - if ( ! self->private_impl.f_started) { - self->private_impl.f_started = true; - self->private_impl.f_state = 1; - self->private_impl.choosy_up = ( -#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) - wuffs_base__cpu_arch__have_arm_neon() ? &wuffs_adler32__hasher__up_arm_neon : -#endif -#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) - wuffs_base__cpu_arch__have_x86_sse42() ? &wuffs_adler32__hasher__up_x86_sse42 : -#endif - self->private_impl.choosy_up); - } - wuffs_adler32__hasher__up(self, a_x); - return self->private_impl.f_state; -} - -// -------- func adler32.hasher.up - -static wuffs_base__empty_struct -wuffs_adler32__hasher__up( - wuffs_adler32__hasher* self, - wuffs_base__slice_u8 a_x) { - return (*self->private_impl.choosy_up)(self, a_x); -} - -static wuffs_base__empty_struct -wuffs_adler32__hasher__up__choosy_default( - wuffs_adler32__hasher* self, - wuffs_base__slice_u8 a_x) { - uint32_t v_s1 = 0; - uint32_t v_s2 = 0; - wuffs_base__slice_u8 v_remaining = {0}; - wuffs_base__slice_u8 v_p = {0}; - - v_s1 = ((self->private_impl.f_state) & 0xFFFF); - v_s2 = ((self->private_impl.f_state) >> (32 - (16))); - while (((uint64_t)(a_x.len)) > 0) { - v_remaining = wuffs_base__slice_u8__subslice_j(a_x, 0); - if (((uint64_t)(a_x.len)) > 5552) { - v_remaining = wuffs_base__slice_u8__subslice_i(a_x, 5552); - a_x = wuffs_base__slice_u8__subslice_j(a_x, 5552); - } - { - wuffs_base__slice_u8 i_slice_p = a_x; - v_p.ptr = i_slice_p.ptr; - v_p.len = 1; - uint8_t* i_end0_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 8) * 8); - while (v_p.ptr < i_end0_p) { - v_s1 += ((uint32_t)(v_p.ptr[0])); - v_s2 += v_s1; - v_p.ptr += 1; - v_s1 += ((uint32_t)(v_p.ptr[0])); - v_s2 += v_s1; - v_p.ptr += 1; - v_s1 += ((uint32_t)(v_p.ptr[0])); - v_s2 += v_s1; - v_p.ptr += 1; - v_s1 += ((uint32_t)(v_p.ptr[0])); - v_s2 += v_s1; - v_p.ptr += 1; - v_s1 += ((uint32_t)(v_p.ptr[0])); - v_s2 += v_s1; - v_p.ptr += 1; - v_s1 += ((uint32_t)(v_p.ptr[0])); - v_s2 += v_s1; - v_p.ptr += 1; - v_s1 += ((uint32_t)(v_p.ptr[0])); - v_s2 += v_s1; - v_p.ptr += 1; - v_s1 += ((uint32_t)(v_p.ptr[0])); - v_s2 += v_s1; - v_p.ptr += 1; - } - v_p.len = 1; - uint8_t* i_end1_p = i_slice_p.ptr + i_slice_p.len; - while (v_p.ptr < i_end1_p) { - v_s1 += ((uint32_t)(v_p.ptr[0])); - v_s2 += v_s1; - v_p.ptr += 1; - } - v_p.len = 0; - } - v_s1 %= 65521; - v_s2 %= 65521; - a_x = v_remaining; - } - self->private_impl.f_state = (((v_s2 & 65535) << 16) | (v_s1 & 65535)); - return wuffs_base__make_empty_struct(); -} - -// ‼ WUFFS MULTI-FILE SECTION +arm_neon -// -------- func adler32.hasher.up_arm_neon - -#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) -static wuffs_base__empty_struct -wuffs_adler32__hasher__up_arm_neon( - wuffs_adler32__hasher* self, - wuffs_base__slice_u8 a_x) { - uint32_t v_s1 = 0; - uint32_t v_s2 = 0; - wuffs_base__slice_u8 v_remaining = {0}; - wuffs_base__slice_u8 v_p = {0}; - uint8x16_t v_p__left = {0}; - uint8x16_t v_p_right = {0}; - uint32x4_t v_v1 = {0}; - uint32x4_t v_v2 = {0}; - uint16x8_t v_col0 = {0}; - uint16x8_t v_col1 = {0}; - uint16x8_t v_col2 = {0}; - uint16x8_t v_col3 = {0}; - uint32x2_t v_sum1 = {0}; - uint32x2_t v_sum2 = {0}; - uint32x2_t v_sum12 = {0}; - uint32_t v_num_iterate_bytes = 0; - uint64_t v_tail_index = 0; - - v_s1 = ((self->private_impl.f_state) & 0xFFFF); - v_s2 = ((self->private_impl.f_state) >> (32 - (16))); - while ((((uint64_t)(a_x.len)) > 0) && ((15 & ((uint32_t)(0xFFF & (uintptr_t)(a_x.ptr)))) != 0)) { - v_s1 += ((uint32_t)(a_x.ptr[0])); - v_s2 += v_s1; - a_x = wuffs_base__slice_u8__subslice_i(a_x, 1); - } - v_s1 %= 65521; - v_s2 %= 65521; - while (((uint64_t)(a_x.len)) > 0) { - v_remaining = wuffs_base__slice_u8__subslice_j(a_x, 0); - if (((uint64_t)(a_x.len)) > 5536) { - v_remaining = wuffs_base__slice_u8__subslice_i(a_x, 5536); - a_x = wuffs_base__slice_u8__subslice_j(a_x, 5536); - } - v_num_iterate_bytes = ((uint32_t)((((uint64_t)(a_x.len)) & 4294967264))); - v_s2 += ((uint32_t)(v_s1 * v_num_iterate_bytes)); - v_v1 = vdupq_n_u32(0); - v_v2 = vdupq_n_u32(0); - v_col0 = vdupq_n_u16(0); - v_col1 = vdupq_n_u16(0); - v_col2 = vdupq_n_u16(0); - v_col3 = vdupq_n_u16(0); - { - wuffs_base__slice_u8 i_slice_p = a_x; - v_p.ptr = i_slice_p.ptr; - v_p.len = 32; - uint8_t* i_end0_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 32) * 32); - while (v_p.ptr < i_end0_p) { - v_p__left = vld1q_u8(v_p.ptr); - v_p_right = vld1q_u8(v_p.ptr + 16); - v_v2 = vaddq_u32(v_v2, v_v1); - v_v1 = vpadalq_u16(v_v1, vpadalq_u8(vpaddlq_u8(v_p__left), v_p_right)); - v_col0 = vaddw_u8(v_col0, vget_low_u8(v_p__left)); - v_col1 = vaddw_u8(v_col1, vget_high_u8(v_p__left)); - v_col2 = vaddw_u8(v_col2, vget_low_u8(v_p_right)); - v_col3 = vaddw_u8(v_col3, vget_high_u8(v_p_right)); - v_p.ptr += 32; - } - v_p.len = 0; - } - v_v2 = vshlq_n_u32(v_v2, 5); - v_v2 = vmlal_u16(v_v2, vget_low_u16(v_col0), ((uint16x4_t){32, 31, 30, 29})); - v_v2 = vmlal_u16(v_v2, vget_high_u16(v_col0), ((uint16x4_t){28, 27, 26, 25})); - v_v2 = vmlal_u16(v_v2, vget_low_u16(v_col1), ((uint16x4_t){24, 23, 22, 21})); - v_v2 = vmlal_u16(v_v2, vget_high_u16(v_col1), ((uint16x4_t){20, 19, 18, 17})); - v_v2 = vmlal_u16(v_v2, vget_low_u16(v_col2), ((uint16x4_t){16, 15, 14, 13})); - v_v2 = vmlal_u16(v_v2, vget_high_u16(v_col2), ((uint16x4_t){12, 11, 10, 9})); - v_v2 = vmlal_u16(v_v2, vget_low_u16(v_col3), ((uint16x4_t){8, 7, 6, 5})); - v_v2 = vmlal_u16(v_v2, vget_high_u16(v_col3), ((uint16x4_t){4, 3, 2, 1})); - v_sum1 = vpadd_u32(vget_low_u32(v_v1), vget_high_u32(v_v1)); - v_sum2 = vpadd_u32(vget_low_u32(v_v2), vget_high_u32(v_v2)); - v_sum12 = vpadd_u32(v_sum1, v_sum2); - v_s1 += vget_lane_u32(v_sum12, 0); - v_s2 += vget_lane_u32(v_sum12, 1); - v_tail_index = (((uint64_t)(a_x.len)) & 18446744073709551584u); - if (v_tail_index < ((uint64_t)(a_x.len))) { - { - wuffs_base__slice_u8 i_slice_p = wuffs_base__slice_u8__subslice_i(a_x, v_tail_index); - v_p.ptr = i_slice_p.ptr; - v_p.len = 1; - uint8_t* i_end0_p = i_slice_p.ptr + i_slice_p.len; - while (v_p.ptr < i_end0_p) { - v_s1 += ((uint32_t)(v_p.ptr[0])); - v_s2 += v_s1; - v_p.ptr += 1; - } - v_p.len = 0; - } - } - v_s1 %= 65521; - v_s2 %= 65521; - a_x = v_remaining; - } - self->private_impl.f_state = (((v_s2 & 65535) << 16) | (v_s1 & 65535)); - return wuffs_base__make_empty_struct(); -} -#endif // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) -// ‼ WUFFS MULTI-FILE SECTION -arm_neon - -// ‼ WUFFS MULTI-FILE SECTION +x86_sse42 -// -------- func adler32.hasher.up_x86_sse42 - -#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) -WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2") -static wuffs_base__empty_struct -wuffs_adler32__hasher__up_x86_sse42( - wuffs_adler32__hasher* self, - wuffs_base__slice_u8 a_x) { - uint32_t v_s1 = 0; - uint32_t v_s2 = 0; - wuffs_base__slice_u8 v_remaining = {0}; - wuffs_base__slice_u8 v_p = {0}; - __m128i v_zeroes = {0}; - __m128i v_ones = {0}; - __m128i v_weights__left = {0}; - __m128i v_weights_right = {0}; - __m128i v_q__left = {0}; - __m128i v_q_right = {0}; - __m128i v_v1 = {0}; - __m128i v_v2 = {0}; - __m128i v_v2j = {0}; - __m128i v_v2k = {0}; - uint32_t v_num_iterate_bytes = 0; - uint64_t v_tail_index = 0; - - v_zeroes = _mm_set1_epi16((int16_t)(0)); - v_ones = _mm_set1_epi16((int16_t)(1)); - v_weights__left = _mm_set_epi8((int8_t)(17), (int8_t)(18), (int8_t)(19), (int8_t)(20), (int8_t)(21), (int8_t)(22), (int8_t)(23), (int8_t)(24), (int8_t)(25), (int8_t)(26), (int8_t)(27), (int8_t)(28), (int8_t)(29), (int8_t)(30), (int8_t)(31), (int8_t)(32)); - v_weights_right = _mm_set_epi8((int8_t)(1), (int8_t)(2), (int8_t)(3), (int8_t)(4), (int8_t)(5), (int8_t)(6), (int8_t)(7), (int8_t)(8), (int8_t)(9), (int8_t)(10), (int8_t)(11), (int8_t)(12), (int8_t)(13), (int8_t)(14), (int8_t)(15), (int8_t)(16)); - v_s1 = ((self->private_impl.f_state) & 0xFFFF); - v_s2 = ((self->private_impl.f_state) >> (32 - (16))); - while (((uint64_t)(a_x.len)) > 0) { - v_remaining = wuffs_base__slice_u8__subslice_j(a_x, 0); - if (((uint64_t)(a_x.len)) > 5536) { - v_remaining = wuffs_base__slice_u8__subslice_i(a_x, 5536); - a_x = wuffs_base__slice_u8__subslice_j(a_x, 5536); - } - v_num_iterate_bytes = ((uint32_t)((((uint64_t)(a_x.len)) & 4294967264))); - v_s2 += ((uint32_t)(v_s1 * v_num_iterate_bytes)); - v_v1 = _mm_setzero_si128(); - v_v2j = _mm_setzero_si128(); - v_v2k = _mm_setzero_si128(); - { - wuffs_base__slice_u8 i_slice_p = a_x; - v_p.ptr = i_slice_p.ptr; - v_p.len = 32; - uint8_t* i_end0_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 32) * 32); - while (v_p.ptr < i_end0_p) { - v_q__left = _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr)); - v_q_right = _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr + 16)); - v_v2j = _mm_add_epi32(v_v2j, v_v1); - v_v1 = _mm_add_epi32(v_v1, _mm_sad_epu8(v_q__left, v_zeroes)); - v_v1 = _mm_add_epi32(v_v1, _mm_sad_epu8(v_q_right, v_zeroes)); - v_v2k = _mm_add_epi32(v_v2k, _mm_madd_epi16(v_ones, _mm_maddubs_epi16(v_q__left, v_weights__left))); - v_v2k = _mm_add_epi32(v_v2k, _mm_madd_epi16(v_ones, _mm_maddubs_epi16(v_q_right, v_weights_right))); - v_p.ptr += 32; - } - v_p.len = 0; - } - v_v1 = _mm_add_epi32(v_v1, _mm_shuffle_epi32(v_v1, (int32_t)(177))); - v_v1 = _mm_add_epi32(v_v1, _mm_shuffle_epi32(v_v1, (int32_t)(78))); - v_s1 += ((uint32_t)(_mm_cvtsi128_si32(v_v1))); - v_v2 = _mm_add_epi32(v_v2k, _mm_slli_epi32(v_v2j, (int32_t)(5))); - v_v2 = _mm_add_epi32(v_v2, _mm_shuffle_epi32(v_v2, (int32_t)(177))); - v_v2 = _mm_add_epi32(v_v2, _mm_shuffle_epi32(v_v2, (int32_t)(78))); - v_s2 += ((uint32_t)(_mm_cvtsi128_si32(v_v2))); - v_tail_index = (((uint64_t)(a_x.len)) & 18446744073709551584u); - if (v_tail_index < ((uint64_t)(a_x.len))) { - { - wuffs_base__slice_u8 i_slice_p = wuffs_base__slice_u8__subslice_i(a_x, v_tail_index); - v_p.ptr = i_slice_p.ptr; - v_p.len = 1; - uint8_t* i_end0_p = i_slice_p.ptr + i_slice_p.len; - while (v_p.ptr < i_end0_p) { - v_s1 += ((uint32_t)(v_p.ptr[0])); - v_s2 += v_s1; - v_p.ptr += 1; - } - v_p.len = 0; - } - } - v_s1 %= 65521; - v_s2 %= 65521; - a_x = v_remaining; - } - self->private_impl.f_state = (((v_s2 & 65535) << 16) | (v_s1 & 65535)); - return wuffs_base__make_empty_struct(); -} -#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) -// ‼ WUFFS MULTI-FILE SECTION -x86_sse42 - -#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__ADLER32) - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BMP) - -// ---------------- Status Codes Implementations - -const char wuffs_bmp__error__bad_header[] = "#bmp: bad header"; -const char wuffs_bmp__error__bad_rle_compression[] = "#bmp: bad RLE compression"; -const char wuffs_bmp__error__truncated_input[] = "#bmp: truncated input"; -const char wuffs_bmp__error__unsupported_bmp_file[] = "#bmp: unsupported BMP file"; -const char wuffs_bmp__note__internal_note_short_read[] = "@bmp: internal note: short read"; - -// ---------------- Private Consts - -#define WUFFS_BMP__COMPRESSION_NONE 0 - -#define WUFFS_BMP__COMPRESSION_RLE8 1 - -#define WUFFS_BMP__COMPRESSION_RLE4 2 - -#define WUFFS_BMP__COMPRESSION_BITFIELDS 3 - -#define WUFFS_BMP__COMPRESSION_JPEG 4 - -#define WUFFS_BMP__COMPRESSION_PNG 5 - -#define WUFFS_BMP__COMPRESSION_ALPHABITFIELDS 6 - -#define WUFFS_BMP__COMPRESSION_LOW_BIT_DEPTH 256 - -#define WUFFS_BMP__RLE_STATE_NEUTRAL 0 - -#define WUFFS_BMP__RLE_STATE_RUN 1 - -#define WUFFS_BMP__RLE_STATE_ESCAPE 2 - -#define WUFFS_BMP__RLE_STATE_LITERAL 3 - -#define WUFFS_BMP__RLE_STATE_DELTA_X 4 - -#define WUFFS_BMP__RLE_STATE_DELTA_Y 5 - -// ---------------- Private Initializer Prototypes - -// ---------------- Private Function Prototypes - -static wuffs_base__status -wuffs_bmp__decoder__do_decode_image_config( - wuffs_bmp__decoder* self, - wuffs_base__image_config* a_dst, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_bmp__decoder__do_decode_frame_config( - wuffs_bmp__decoder* self, - wuffs_base__frame_config* a_dst, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_bmp__decoder__do_decode_frame( - wuffs_bmp__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__pixel_blend a_blend, - wuffs_base__slice_u8 a_workbuf, - wuffs_base__decode_frame_options* a_opts); - -static wuffs_base__status -wuffs_bmp__decoder__swizzle_none( - wuffs_bmp__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_bmp__decoder__swizzle_rle( - wuffs_bmp__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_bmp__decoder__swizzle_bitfields( - wuffs_bmp__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_bmp__decoder__swizzle_low_bit_depth( - wuffs_bmp__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_bmp__decoder__do_tell_me_more( - wuffs_bmp__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__more_information* a_minfo, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_bmp__decoder__read_palette( - wuffs_bmp__decoder* self, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_bmp__decoder__process_masks( - wuffs_bmp__decoder* self); - -// ---------------- VTables - -const wuffs_base__image_decoder__func_ptrs -wuffs_bmp__decoder__func_ptrs_for__wuffs_base__image_decoder = { - (wuffs_base__status(*)(void*, - wuffs_base__pixel_buffer*, - wuffs_base__io_buffer*, - wuffs_base__pixel_blend, - wuffs_base__slice_u8, - wuffs_base__decode_frame_options*))(&wuffs_bmp__decoder__decode_frame), - (wuffs_base__status(*)(void*, - wuffs_base__frame_config*, - wuffs_base__io_buffer*))(&wuffs_bmp__decoder__decode_frame_config), - (wuffs_base__status(*)(void*, - wuffs_base__image_config*, - wuffs_base__io_buffer*))(&wuffs_bmp__decoder__decode_image_config), - (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_bmp__decoder__frame_dirty_rect), - (uint32_t(*)(const void*))(&wuffs_bmp__decoder__num_animation_loops), - (uint64_t(*)(const void*))(&wuffs_bmp__decoder__num_decoded_frame_configs), - (uint64_t(*)(const void*))(&wuffs_bmp__decoder__num_decoded_frames), - (wuffs_base__status(*)(void*, - uint64_t, - uint64_t))(&wuffs_bmp__decoder__restart_frame), - (wuffs_base__status(*)(void*, - uint32_t, - uint64_t))(&wuffs_bmp__decoder__set_quirk), - (wuffs_base__empty_struct(*)(void*, - uint32_t, - bool))(&wuffs_bmp__decoder__set_report_metadata), - (wuffs_base__status(*)(void*, - wuffs_base__io_buffer*, - wuffs_base__more_information*, - wuffs_base__io_buffer*))(&wuffs_bmp__decoder__tell_me_more), - (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_bmp__decoder__workbuf_len), -}; - -// ---------------- Initializer Implementations - -wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT -wuffs_bmp__decoder__initialize( - wuffs_bmp__decoder* self, - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options){ - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (sizeof(*self) != sizeof_star_self) { - return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver); - } - if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) || - (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) { - return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version); - } - - if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) { - // The whole point of this if-check is to detect an uninitialized *self. - // We disable the warning on GCC. Clang-5.0 does not have this warning. -#if !defined(__clang__) && defined(__GNUC__) -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wmaybe-uninitialized" -#endif - if (self->private_impl.magic != 0) { - return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed); - } -#if !defined(__clang__) && defined(__GNUC__) -#pragma GCC diagnostic pop -#endif - } else { - if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) { - memset(self, 0, sizeof(*self)); - options |= WUFFS_INITIALIZE__ALREADY_ZEROED; - } else { - memset(&(self->private_impl), 0, sizeof(self->private_impl)); - } - } - - self->private_impl.magic = WUFFS_BASE__MAGIC; - self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name = - wuffs_base__image_decoder__vtable_name; - self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers = - (const void*)(&wuffs_bmp__decoder__func_ptrs_for__wuffs_base__image_decoder); - return wuffs_base__make_status(NULL); -} - -wuffs_bmp__decoder* -wuffs_bmp__decoder__alloc() { - wuffs_bmp__decoder* x = - (wuffs_bmp__decoder*)(calloc(sizeof(wuffs_bmp__decoder), 1)); - if (!x) { - return NULL; - } - if (wuffs_bmp__decoder__initialize( - x, sizeof(wuffs_bmp__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) { - free(x); - return NULL; - } - return x; -} - -size_t -sizeof__wuffs_bmp__decoder() { - return sizeof(wuffs_bmp__decoder); -} - -// ---------------- Function Implementations - -// -------- func bmp.decoder.set_quirk - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_bmp__decoder__set_quirk( - wuffs_bmp__decoder* self, - uint32_t a_key, - uint64_t a_value) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - - return wuffs_base__make_status(wuffs_base__error__unsupported_option); -} - -// -------- func bmp.decoder.decode_image_config - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_bmp__decoder__decode_image_config( - wuffs_bmp__decoder* self, - wuffs_base__image_config* a_dst, - wuffs_base__io_buffer* a_src) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - if (!a_src) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - if ((self->private_impl.active_coroutine != 0) && - (self->private_impl.active_coroutine != 1)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); - } - self->private_impl.active_coroutine = 0; - wuffs_base__status status = wuffs_base__make_status(NULL); - - wuffs_base__status v_status = wuffs_base__make_status(NULL); - - uint32_t coro_susp_point = self->private_impl.p_decode_image_config[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - while (true) { - { - wuffs_base__status t_0 = wuffs_bmp__decoder__do_decode_image_config(self, a_dst, a_src); - v_status = t_0; - } - if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { - status = wuffs_base__make_status(wuffs_bmp__error__truncated_input); - goto exit; - } - status = v_status; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); - } - - ok: - self->private_impl.p_decode_image_config[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0; - - goto exit; - exit: - if (wuffs_base__status__is_error(&status)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - } - return status; -} - -// -------- func bmp.decoder.do_decode_image_config - -static wuffs_base__status -wuffs_bmp__decoder__do_decode_image_config( - wuffs_bmp__decoder* self, - wuffs_base__image_config* a_dst, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint32_t v_magic = 0; - uint32_t v_width = 0; - uint32_t v_height = 0; - uint32_t v_planes = 0; - uint32_t v_dst_pixfmt = 0; - uint32_t v_byte_width = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - if ((self->private_impl.f_call_sequence != 0) || (self->private_impl.f_io_redirect_fourcc == 1)) { - status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence); - goto exit; - } else if (self->private_impl.f_io_redirect_fourcc != 0) { - status = wuffs_base__make_status(wuffs_base__note__i_o_redirect); - goto ok; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - uint32_t t_0; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { - t_0 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src))); - iop_a_src += 2; - } else { - self->private_data.s_do_decode_image_config[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; - uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0; - if (num_bits_0 == 8) { - t_0 = ((uint32_t)(*scratch)); - break; - } - num_bits_0 += 8; - *scratch |= ((uint64_t)(num_bits_0)) << 56; - } - } - v_magic = t_0; - } - if (v_magic != 19778) { - status = wuffs_base__make_status(wuffs_bmp__error__bad_header); - goto exit; - } - self->private_data.s_do_decode_image_config[0].scratch = 8; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); - if (self->private_data.s_do_decode_image_config[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { - self->private_data.s_do_decode_image_config[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); - iop_a_src = io2_a_src; - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - iop_a_src += self->private_data.s_do_decode_image_config[0].scratch; - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); - uint32_t t_1; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_1 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); - iop_a_src += 4; - } else { - self->private_data.s_do_decode_image_config[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; - uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1; - if (num_bits_1 == 24) { - t_1 = ((uint32_t)(*scratch)); - break; - } - num_bits_1 += 8; - *scratch |= ((uint64_t)(num_bits_1)) << 56; - } - } - self->private_impl.f_padding = t_1; - } - if (self->private_impl.f_padding < 14) { - status = wuffs_base__make_status(wuffs_bmp__error__bad_header); - goto exit; - } - self->private_impl.f_padding -= 14; - self->private_impl.f_io_redirect_pos = wuffs_base__u64__sat_add(((uint64_t)(self->private_impl.f_padding)), wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))); - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); - uint32_t t_2; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_2 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); - iop_a_src += 4; - } else { - self->private_data.s_do_decode_image_config[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; - uint32_t num_bits_2 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_2; - if (num_bits_2 == 24) { - t_2 = ((uint32_t)(*scratch)); - break; - } - num_bits_2 += 8; - *scratch |= ((uint64_t)(num_bits_2)) << 56; - } - } - self->private_impl.f_bitmap_info_len = t_2; - } - if (self->private_impl.f_padding < self->private_impl.f_bitmap_info_len) { - status = wuffs_base__make_status(wuffs_bmp__error__bad_header); - goto exit; - } - self->private_impl.f_padding -= self->private_impl.f_bitmap_info_len; - if (self->private_impl.f_bitmap_info_len == 12) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8); - uint32_t t_3; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { - t_3 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src))); - iop_a_src += 2; - } else { - self->private_data.s_do_decode_image_config[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; - uint32_t num_bits_3 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_3; - if (num_bits_3 == 8) { - t_3 = ((uint32_t)(*scratch)); - break; - } - num_bits_3 += 8; - *scratch |= ((uint64_t)(num_bits_3)) << 56; - } - } - self->private_impl.f_width = t_3; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10); - uint32_t t_4; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { - t_4 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src))); - iop_a_src += 2; - } else { - self->private_data.s_do_decode_image_config[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; - uint32_t num_bits_4 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_4; - if (num_bits_4 == 8) { - t_4 = ((uint32_t)(*scratch)); - break; - } - num_bits_4 += 8; - *scratch |= ((uint64_t)(num_bits_4)) << 56; - } - } - self->private_impl.f_height = t_4; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12); - uint32_t t_5; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { - t_5 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src))); - iop_a_src += 2; - } else { - self->private_data.s_do_decode_image_config[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(13); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; - uint32_t num_bits_5 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_5; - if (num_bits_5 == 8) { - t_5 = ((uint32_t)(*scratch)); - break; - } - num_bits_5 += 8; - *scratch |= ((uint64_t)(num_bits_5)) << 56; - } - } - v_planes = t_5; - } - if (v_planes != 1) { - status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file); - goto exit; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(14); - uint32_t t_6; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { - t_6 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src))); - iop_a_src += 2; - } else { - self->private_data.s_do_decode_image_config[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(15); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; - uint32_t num_bits_6 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_6; - if (num_bits_6 == 8) { - t_6 = ((uint32_t)(*scratch)); - break; - } - num_bits_6 += 8; - *scratch |= ((uint64_t)(num_bits_6)) << 56; - } - } - self->private_impl.f_bits_per_pixel = t_6; - } - } else if (self->private_impl.f_bitmap_info_len == 16) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16); - uint32_t t_7; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_7 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); - iop_a_src += 4; - } else { - self->private_data.s_do_decode_image_config[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(17); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; - uint32_t num_bits_7 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_7; - if (num_bits_7 == 24) { - t_7 = ((uint32_t)(*scratch)); - break; - } - num_bits_7 += 8; - *scratch |= ((uint64_t)(num_bits_7)) << 56; - } - } - v_width = t_7; - } - if (v_width > 2147483647) { - status = wuffs_base__make_status(wuffs_bmp__error__bad_header); - goto exit; - } else if (v_width > 16777215) { - status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension); - goto exit; - } - self->private_impl.f_width = v_width; - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(18); - uint32_t t_8; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_8 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); - iop_a_src += 4; - } else { - self->private_data.s_do_decode_image_config[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(19); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; - uint32_t num_bits_8 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_8; - if (num_bits_8 == 24) { - t_8 = ((uint32_t)(*scratch)); - break; - } - num_bits_8 += 8; - *scratch |= ((uint64_t)(num_bits_8)) << 56; - } - } - v_height = t_8; - } - if (v_height > 2147483647) { - status = wuffs_base__make_status(wuffs_bmp__error__bad_header); - goto exit; - } else if (v_height > 16777215) { - status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension); - goto exit; - } - self->private_impl.f_height = v_height; - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(20); - uint32_t t_9; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { - t_9 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src))); - iop_a_src += 2; - } else { - self->private_data.s_do_decode_image_config[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(21); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; - uint32_t num_bits_9 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_9; - if (num_bits_9 == 8) { - t_9 = ((uint32_t)(*scratch)); - break; - } - num_bits_9 += 8; - *scratch |= ((uint64_t)(num_bits_9)) << 56; - } - } - v_planes = t_9; - } - if (v_planes != 1) { - status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file); - goto exit; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(22); - uint32_t t_10; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { - t_10 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src))); - iop_a_src += 2; - } else { - self->private_data.s_do_decode_image_config[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(23); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; - uint32_t num_bits_10 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_10; - if (num_bits_10 == 8) { - t_10 = ((uint32_t)(*scratch)); - break; - } - num_bits_10 += 8; - *scratch |= ((uint64_t)(num_bits_10)) << 56; - } - } - self->private_impl.f_bits_per_pixel = t_10; - } - } else { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(24); - uint32_t t_11; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_11 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); - iop_a_src += 4; - } else { - self->private_data.s_do_decode_image_config[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(25); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; - uint32_t num_bits_11 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_11; - if (num_bits_11 == 24) { - t_11 = ((uint32_t)(*scratch)); - break; - } - num_bits_11 += 8; - *scratch |= ((uint64_t)(num_bits_11)) << 56; - } - } - v_width = t_11; - } - if (v_width > 2147483647) { - status = wuffs_base__make_status(wuffs_bmp__error__bad_header); - goto exit; - } else if (v_width > 16777215) { - status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension); - goto exit; - } - self->private_impl.f_width = v_width; - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(26); - uint32_t t_12; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_12 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); - iop_a_src += 4; - } else { - self->private_data.s_do_decode_image_config[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(27); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; - uint32_t num_bits_12 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_12; - if (num_bits_12 == 24) { - t_12 = ((uint32_t)(*scratch)); - break; - } - num_bits_12 += 8; - *scratch |= ((uint64_t)(num_bits_12)) << 56; - } - } - v_height = t_12; - } - if (v_height == 2147483648) { - status = wuffs_base__make_status(wuffs_bmp__error__bad_header); - goto exit; - } else if (v_height > 2147483648) { - v_height = ((uint32_t)(0 - v_height)); - if (v_height > 16777215) { - status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension); - goto exit; - } - self->private_impl.f_height = v_height; - self->private_impl.f_top_down = true; - } else if (v_height > 16777215) { - status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension); - goto exit; - } else { - self->private_impl.f_height = v_height; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(28); - uint32_t t_13; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { - t_13 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src))); - iop_a_src += 2; - } else { - self->private_data.s_do_decode_image_config[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(29); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; - uint32_t num_bits_13 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_13; - if (num_bits_13 == 8) { - t_13 = ((uint32_t)(*scratch)); - break; - } - num_bits_13 += 8; - *scratch |= ((uint64_t)(num_bits_13)) << 56; - } - } - v_planes = t_13; - } - if (v_planes != 1) { - status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file); - goto exit; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(30); - uint32_t t_14; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { - t_14 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src))); - iop_a_src += 2; - } else { - self->private_data.s_do_decode_image_config[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(31); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; - uint32_t num_bits_14 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_14; - if (num_bits_14 == 8) { - t_14 = ((uint32_t)(*scratch)); - break; - } - num_bits_14 += 8; - *scratch |= ((uint64_t)(num_bits_14)) << 56; - } - } - self->private_impl.f_bits_per_pixel = t_14; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(32); - uint32_t t_15; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_15 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); - iop_a_src += 4; - } else { - self->private_data.s_do_decode_image_config[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(33); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; - uint32_t num_bits_15 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_15; - if (num_bits_15 == 24) { - t_15 = ((uint32_t)(*scratch)); - break; - } - num_bits_15 += 8; - *scratch |= ((uint64_t)(num_bits_15)) << 56; - } - } - self->private_impl.f_compression = t_15; - } - if (self->private_impl.f_bits_per_pixel == 0) { - if (self->private_impl.f_compression == 4) { - self->private_impl.f_io_redirect_fourcc = 1246774599; - status = wuffs_base__make_status(wuffs_base__note__i_o_redirect); - goto ok; - } else if (self->private_impl.f_compression == 5) { - self->private_impl.f_io_redirect_fourcc = 1347307296; - status = wuffs_base__make_status(wuffs_base__note__i_o_redirect); - goto ok; - } - status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file); - goto exit; - } - self->private_data.s_do_decode_image_config[0].scratch = 20; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(34); - if (self->private_data.s_do_decode_image_config[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { - self->private_data.s_do_decode_image_config[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); - iop_a_src = io2_a_src; - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - iop_a_src += self->private_data.s_do_decode_image_config[0].scratch; - if (self->private_impl.f_bitmap_info_len == 40) { - if (self->private_impl.f_bits_per_pixel >= 16) { - if (self->private_impl.f_padding >= 16) { - self->private_impl.f_bitmap_info_len = 56; - self->private_impl.f_padding -= 16; - } else if (self->private_impl.f_padding >= 12) { - self->private_impl.f_bitmap_info_len = 52; - self->private_impl.f_padding -= 12; - } - } - } else if ((self->private_impl.f_bitmap_info_len != 52) && - (self->private_impl.f_bitmap_info_len != 56) && - (self->private_impl.f_bitmap_info_len != 64) && - (self->private_impl.f_bitmap_info_len != 108) && - (self->private_impl.f_bitmap_info_len != 124)) { - status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file); - goto exit; - } - if (self->private_impl.f_compression == 6) { - self->private_impl.f_compression = 3; - } - if (self->private_impl.f_compression == 3) { - if (self->private_impl.f_bitmap_info_len >= 52) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(35); - uint32_t t_16; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_16 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); - iop_a_src += 4; - } else { - self->private_data.s_do_decode_image_config[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(36); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; - uint32_t num_bits_16 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_16; - if (num_bits_16 == 24) { - t_16 = ((uint32_t)(*scratch)); - break; - } - num_bits_16 += 8; - *scratch |= ((uint64_t)(num_bits_16)) << 56; - } - } - self->private_impl.f_channel_masks[2] = t_16; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(37); - uint32_t t_17; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_17 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); - iop_a_src += 4; - } else { - self->private_data.s_do_decode_image_config[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(38); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; - uint32_t num_bits_17 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_17; - if (num_bits_17 == 24) { - t_17 = ((uint32_t)(*scratch)); - break; - } - num_bits_17 += 8; - *scratch |= ((uint64_t)(num_bits_17)) << 56; - } - } - self->private_impl.f_channel_masks[1] = t_17; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(39); - uint32_t t_18; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_18 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); - iop_a_src += 4; - } else { - self->private_data.s_do_decode_image_config[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(40); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; - uint32_t num_bits_18 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_18; - if (num_bits_18 == 24) { - t_18 = ((uint32_t)(*scratch)); - break; - } - num_bits_18 += 8; - *scratch |= ((uint64_t)(num_bits_18)) << 56; - } - } - self->private_impl.f_channel_masks[0] = t_18; - } - if (self->private_impl.f_bitmap_info_len >= 56) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(41); - uint32_t t_19; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_19 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); - iop_a_src += 4; - } else { - self->private_data.s_do_decode_image_config[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(42); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; - uint32_t num_bits_19 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_19; - if (num_bits_19 == 24) { - t_19 = ((uint32_t)(*scratch)); - break; - } - num_bits_19 += 8; - *scratch |= ((uint64_t)(num_bits_19)) << 56; - } - } - self->private_impl.f_channel_masks[3] = t_19; - } - self->private_data.s_do_decode_image_config[0].scratch = ((uint32_t)(self->private_impl.f_bitmap_info_len - 56)); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(43); - if (self->private_data.s_do_decode_image_config[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { - self->private_data.s_do_decode_image_config[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); - iop_a_src = io2_a_src; - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - iop_a_src += self->private_data.s_do_decode_image_config[0].scratch; - } - if ((self->private_impl.f_channel_masks[0] == 255) && (self->private_impl.f_channel_masks[1] == 65280) && (self->private_impl.f_channel_masks[2] == 16711680)) { - if (self->private_impl.f_bits_per_pixel == 24) { - self->private_impl.f_compression = 0; - } else if (self->private_impl.f_bits_per_pixel == 32) { - if ((self->private_impl.f_channel_masks[3] == 0) || (self->private_impl.f_channel_masks[3] == 4278190080)) { - self->private_impl.f_compression = 0; - } - } - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(44); - status = wuffs_bmp__decoder__process_masks(self); - if (status.repr) { - goto suspend; - } - } - } else if (self->private_impl.f_bitmap_info_len >= 40) { - self->private_data.s_do_decode_image_config[0].scratch = (self->private_impl.f_bitmap_info_len - 40); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(45); - if (self->private_data.s_do_decode_image_config[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { - self->private_data.s_do_decode_image_config[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); - iop_a_src = io2_a_src; - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - iop_a_src += self->private_data.s_do_decode_image_config[0].scratch; - } else { - status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file); - goto exit; - } - } - if (self->private_impl.f_compression != 3) { - if (self->private_impl.f_bits_per_pixel < 16) { - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(46); - status = wuffs_bmp__decoder__read_palette(self, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - } - } - if (self->private_impl.f_compression == 0) { - if ((self->private_impl.f_bits_per_pixel == 1) || (self->private_impl.f_bits_per_pixel == 2) || (self->private_impl.f_bits_per_pixel == 4)) { - self->private_impl.f_src_pixfmt = 2198077448; - self->private_impl.f_compression = 256; - } else if (self->private_impl.f_bits_per_pixel == 8) { - self->private_impl.f_src_pixfmt = 2198077448; - } else if (self->private_impl.f_bits_per_pixel == 16) { - self->private_impl.f_compression = 3; - self->private_impl.f_channel_masks[0] = 31; - self->private_impl.f_channel_masks[1] = 992; - self->private_impl.f_channel_masks[2] = 31744; - self->private_impl.f_channel_masks[3] = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(47); - status = wuffs_bmp__decoder__process_masks(self); - if (status.repr) { - goto suspend; - } - self->private_impl.f_src_pixfmt = 2164308923; - } else if (self->private_impl.f_bits_per_pixel == 24) { - self->private_impl.f_src_pixfmt = 2147485832; - } else if (self->private_impl.f_bits_per_pixel == 32) { - if (self->private_impl.f_channel_masks[3] == 0) { - self->private_impl.f_src_pixfmt = 2415954056; - } else { - self->private_impl.f_src_pixfmt = 2164295816; - } - } else { - status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file); - goto exit; - } - } else if (self->private_impl.f_compression == 1) { - if (self->private_impl.f_bits_per_pixel == 8) { - self->private_impl.f_src_pixfmt = 2198077448; - } else { - status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file); - goto exit; - } - } else if (self->private_impl.f_compression == 2) { - if (self->private_impl.f_bits_per_pixel == 4) { - self->private_impl.f_src_pixfmt = 2198077448; - } else { - status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file); - goto exit; - } - } else if (self->private_impl.f_compression == 3) { - if ((self->private_impl.f_bits_per_pixel == 16) || (self->private_impl.f_bits_per_pixel == 32)) { - self->private_impl.f_src_pixfmt = 2164308923; - } else { - status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file); - goto exit; - } - } else { - status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file); - goto exit; - } - if (((self->private_impl.f_bitmap_info_len < 40) || (self->private_impl.f_bitmap_info_len == 64)) && - (self->private_impl.f_bits_per_pixel != 1) && - (self->private_impl.f_bits_per_pixel != 4) && - (self->private_impl.f_bits_per_pixel != 8) && - (self->private_impl.f_bits_per_pixel != 24)) { - status = wuffs_base__make_status(wuffs_bmp__error__bad_header); - goto exit; - } - if (self->private_impl.f_bits_per_pixel == 1) { - v_byte_width = ((self->private_impl.f_width >> 3) + (((self->private_impl.f_width & 7) + 7) >> 3)); - self->private_impl.f_pad_per_row = ((4 - (v_byte_width & 3)) & 3); - } else if (self->private_impl.f_bits_per_pixel == 2) { - v_byte_width = ((self->private_impl.f_width >> 2) + (((self->private_impl.f_width & 3) + 3) >> 2)); - self->private_impl.f_pad_per_row = ((4 - (v_byte_width & 3)) & 3); - } else if (self->private_impl.f_bits_per_pixel == 4) { - v_byte_width = ((self->private_impl.f_width >> 1) + (self->private_impl.f_width & 1)); - self->private_impl.f_pad_per_row = ((4 - (v_byte_width & 3)) & 3); - } else if (self->private_impl.f_bits_per_pixel == 8) { - self->private_impl.f_pad_per_row = ((4 - (self->private_impl.f_width & 3)) & 3); - } else if (self->private_impl.f_bits_per_pixel == 16) { - self->private_impl.f_pad_per_row = ((self->private_impl.f_width & 1) * 2); - } else if (self->private_impl.f_bits_per_pixel == 24) { - self->private_impl.f_pad_per_row = (self->private_impl.f_width & 3); - } else if (self->private_impl.f_bits_per_pixel == 32) { - self->private_impl.f_pad_per_row = 0; - } - self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))); - if (a_dst != NULL) { - v_dst_pixfmt = 2164295816; - if ((self->private_impl.f_channel_num_bits[0] > 8) || - (self->private_impl.f_channel_num_bits[1] > 8) || - (self->private_impl.f_channel_num_bits[2] > 8) || - (self->private_impl.f_channel_num_bits[3] > 8)) { - v_dst_pixfmt = 2164308923; - } - wuffs_base__image_config__set( - a_dst, - v_dst_pixfmt, - 0, - self->private_impl.f_width, - self->private_impl.f_height, - self->private_impl.f_frame_config_io_position, - (self->private_impl.f_channel_masks[3] == 0)); - } - self->private_impl.f_call_sequence = 32; - - ok: - self->private_impl.p_do_decode_image_config[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_do_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func bmp.decoder.decode_frame_config - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_bmp__decoder__decode_frame_config( - wuffs_bmp__decoder* self, - wuffs_base__frame_config* a_dst, - wuffs_base__io_buffer* a_src) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - if (!a_src) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - if ((self->private_impl.active_coroutine != 0) && - (self->private_impl.active_coroutine != 2)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); - } - self->private_impl.active_coroutine = 0; - wuffs_base__status status = wuffs_base__make_status(NULL); - - wuffs_base__status v_status = wuffs_base__make_status(NULL); - - uint32_t coro_susp_point = self->private_impl.p_decode_frame_config[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - while (true) { - { - wuffs_base__status t_0 = wuffs_bmp__decoder__do_decode_frame_config(self, a_dst, a_src); - v_status = t_0; - } - if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { - status = wuffs_base__make_status(wuffs_bmp__error__truncated_input); - goto exit; - } - status = v_status; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); - } - - ok: - self->private_impl.p_decode_frame_config[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0; - - goto exit; - exit: - if (wuffs_base__status__is_error(&status)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - } - return status; -} - -// -------- func bmp.decoder.do_decode_frame_config - -static wuffs_base__status -wuffs_bmp__decoder__do_decode_frame_config( - wuffs_bmp__decoder* self, - wuffs_base__frame_config* a_dst, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - if (self->private_impl.f_call_sequence == 32) { - } else if (self->private_impl.f_call_sequence < 32) { - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - status = wuffs_bmp__decoder__do_decode_image_config(self, NULL, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - } else if (self->private_impl.f_call_sequence == 40) { - if (self->private_impl.f_frame_config_io_position != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) { - status = wuffs_base__make_status(wuffs_base__error__bad_restart); - goto exit; - } - } else if (self->private_impl.f_call_sequence == 64) { - self->private_impl.f_call_sequence = 96; - status = wuffs_base__make_status(wuffs_base__note__end_of_data); - goto ok; - } else { - status = wuffs_base__make_status(wuffs_base__note__end_of_data); - goto ok; - } - if (a_dst != NULL) { - wuffs_base__frame_config__set( - a_dst, - wuffs_base__utility__make_rect_ie_u32( - 0, - 0, - self->private_impl.f_width, - self->private_impl.f_height), - ((wuffs_base__flicks)(0)), - 0, - self->private_impl.f_frame_config_io_position, - 0, - true, - false, - 4278190080); - } - self->private_impl.f_call_sequence = 64; - - ok: - self->private_impl.p_do_decode_frame_config[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_do_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func bmp.decoder.decode_frame - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_bmp__decoder__decode_frame( - wuffs_bmp__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__pixel_blend a_blend, - wuffs_base__slice_u8 a_workbuf, - wuffs_base__decode_frame_options* a_opts) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - if (!a_dst || !a_src) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - if ((self->private_impl.active_coroutine != 0) && - (self->private_impl.active_coroutine != 3)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); - } - self->private_impl.active_coroutine = 0; - wuffs_base__status status = wuffs_base__make_status(NULL); - - wuffs_base__status v_status = wuffs_base__make_status(NULL); - - uint32_t coro_susp_point = self->private_impl.p_decode_frame[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - while (true) { - { - wuffs_base__status t_0 = wuffs_bmp__decoder__do_decode_frame(self, - a_dst, - a_src, - a_blend, - a_workbuf, - a_opts); - v_status = t_0; - } - if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { - status = wuffs_base__make_status(wuffs_bmp__error__truncated_input); - goto exit; - } - status = v_status; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); - } - - ok: - self->private_impl.p_decode_frame[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0; - - goto exit; - exit: - if (wuffs_base__status__is_error(&status)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - } - return status; -} - -// -------- func bmp.decoder.do_decode_frame - -static wuffs_base__status -wuffs_bmp__decoder__do_decode_frame( - wuffs_bmp__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__pixel_blend a_blend, - wuffs_base__slice_u8 a_workbuf, - wuffs_base__decode_frame_options* a_opts) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - wuffs_base__status v_status = wuffs_base__make_status(NULL); - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_do_decode_frame[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - if (self->private_impl.f_call_sequence == 64) { - } else if (self->private_impl.f_call_sequence < 64) { - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - status = wuffs_bmp__decoder__do_decode_frame_config(self, NULL, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - } else { - status = wuffs_base__make_status(wuffs_base__note__end_of_data); - goto ok; - } - self->private_data.s_do_decode_frame[0].scratch = self->private_impl.f_padding; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - if (self->private_data.s_do_decode_frame[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { - self->private_data.s_do_decode_frame[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); - iop_a_src = io2_a_src; - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - iop_a_src += self->private_data.s_do_decode_frame[0].scratch; - if ((self->private_impl.f_width > 0) && (self->private_impl.f_height > 0)) { - self->private_impl.f_dst_x = 0; - if (self->private_impl.f_top_down) { - self->private_impl.f_dst_y = 0; - self->private_impl.f_dst_y_inc = 1; - } else { - self->private_impl.f_dst_y = ((uint32_t)(self->private_impl.f_height - 1)); - self->private_impl.f_dst_y_inc = 4294967295; - } - v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler, - wuffs_base__pixel_buffer__pixel_format(a_dst), - wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8_ij(self->private_data.f_scratch, 1024, 2048)), - wuffs_base__utility__make_pixel_format(self->private_impl.f_src_pixfmt), - wuffs_base__make_slice_u8(self->private_data.f_src_palette, 1024), - a_blend); - if ( ! wuffs_base__status__is_ok(&v_status)) { - status = v_status; - if (wuffs_base__status__is_error(&status)) { - goto exit; - } else if (wuffs_base__status__is_suspension(&status)) { - status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension); - goto exit; - } - goto ok; - } - while (true) { - if (self->private_impl.f_compression == 0) { - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - v_status = wuffs_bmp__decoder__swizzle_none(self, a_dst, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - } else if (self->private_impl.f_compression < 3) { - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - v_status = wuffs_bmp__decoder__swizzle_rle(self, a_dst, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - } else if (self->private_impl.f_compression == 3) { - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - v_status = wuffs_bmp__decoder__swizzle_bitfields(self, a_dst, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - } else { - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - v_status = wuffs_bmp__decoder__swizzle_low_bit_depth(self, a_dst, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - } - if (wuffs_base__status__is_ok(&v_status)) { - goto label__0__break; - } else if (v_status.repr != wuffs_bmp__note__internal_note_short_read) { - status = v_status; - if (wuffs_base__status__is_error(&status)) { - goto exit; - } else if (wuffs_base__status__is_suspension(&status)) { - status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension); - goto exit; - } - goto ok; - } - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3); - } - label__0__break:; - self->private_data.s_do_decode_frame[0].scratch = self->private_impl.f_pending_pad; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); - if (self->private_data.s_do_decode_frame[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { - self->private_data.s_do_decode_frame[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); - iop_a_src = io2_a_src; - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - iop_a_src += self->private_data.s_do_decode_frame[0].scratch; - self->private_impl.f_pending_pad = 0; - } - self->private_impl.f_call_sequence = 96; - - ok: - self->private_impl.p_do_decode_frame[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_do_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func bmp.decoder.swizzle_none - -static wuffs_base__status -wuffs_bmp__decoder__swizzle_none( - wuffs_bmp__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - wuffs_base__pixel_format v_dst_pixfmt = {0}; - uint32_t v_dst_bits_per_pixel = 0; - uint32_t v_dst_bytes_per_pixel = 0; - uint64_t v_dst_bytes_per_row = 0; - uint32_t v_src_bytes_per_pixel = 0; - wuffs_base__slice_u8 v_dst_palette = {0}; - wuffs_base__table_u8 v_tab = {0}; - wuffs_base__slice_u8 v_dst = {0}; - uint64_t v_i = 0; - uint64_t v_j = 0; - uint64_t v_n = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst); - v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt); - if ((v_dst_bits_per_pixel & 7) != 0) { - status = wuffs_base__make_status(wuffs_base__error__unsupported_option); - goto exit; - } - v_dst_bytes_per_pixel = (v_dst_bits_per_pixel / 8); - v_dst_bytes_per_row = ((uint64_t)((self->private_impl.f_width * v_dst_bytes_per_pixel))); - v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8_ij(self->private_data.f_scratch, 1024, 2048)); - v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0); - label__outer__continue:; - while (true) { - while (self->private_impl.f_pending_pad > 0) { - if (((uint64_t)(io2_a_src - iop_a_src)) <= 0) { - status = wuffs_base__make_status(wuffs_bmp__note__internal_note_short_read); - goto ok; - } - self->private_impl.f_pending_pad -= 1; - iop_a_src += 1; - } - while (true) { - if (self->private_impl.f_dst_x == self->private_impl.f_width) { - self->private_impl.f_dst_x = 0; - self->private_impl.f_dst_y += self->private_impl.f_dst_y_inc; - if (self->private_impl.f_dst_y >= self->private_impl.f_height) { - if (self->private_impl.f_height > 0) { - self->private_impl.f_pending_pad = self->private_impl.f_pad_per_row; - } - goto label__outer__break; - } else if (self->private_impl.f_pad_per_row != 0) { - self->private_impl.f_pending_pad = self->private_impl.f_pad_per_row; - goto label__outer__continue; - } - } - v_dst = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y); - if (v_dst_bytes_per_row < ((uint64_t)(v_dst.len))) { - v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_bytes_per_row); - } - v_i = (((uint64_t)(self->private_impl.f_dst_x)) * ((uint64_t)(v_dst_bytes_per_pixel))); - if (v_i >= ((uint64_t)(v_dst.len))) { - if (self->private_impl.f_bits_per_pixel > 32) { - status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file); - goto exit; - } - v_src_bytes_per_pixel = (self->private_impl.f_bits_per_pixel / 8); - if (v_src_bytes_per_pixel == 0) { - status = wuffs_base__make_status(wuffs_bmp__error__unsupported_bmp_file); - goto exit; - } - v_n = (((uint64_t)(io2_a_src - iop_a_src)) / ((uint64_t)(v_src_bytes_per_pixel))); - v_n = wuffs_base__u64__min(v_n, ((uint64_t)(((uint32_t)(self->private_impl.f_width - self->private_impl.f_dst_x))))); - v_j = v_n; - while (v_j >= 8) { - if (((uint64_t)(io2_a_src - iop_a_src)) >= ((uint64_t)((v_src_bytes_per_pixel * 8)))) { - iop_a_src += (v_src_bytes_per_pixel * 8); - } - v_j -= 8; - } - while (v_j > 0) { - if (((uint64_t)(io2_a_src - iop_a_src)) >= ((uint64_t)((v_src_bytes_per_pixel * 1)))) { - iop_a_src += (v_src_bytes_per_pixel * 1); - } - v_j -= 1; - } - } else { - v_n = wuffs_base__pixel_swizzler__swizzle_interleaved_from_reader( - &self->private_impl.f_swizzler, - wuffs_base__slice_u8__subslice_i(v_dst, v_i), - v_dst_palette, - &iop_a_src, - io2_a_src); - } - if (v_n == 0) { - status = wuffs_base__make_status(wuffs_bmp__note__internal_note_short_read); - goto ok; - } - wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)((v_n & 4294967295)))); - } - } - label__outer__break:; - status = wuffs_base__make_status(NULL); - goto ok; - - ok: - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func bmp.decoder.swizzle_rle - -static wuffs_base__status -wuffs_bmp__decoder__swizzle_rle( - wuffs_bmp__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - wuffs_base__pixel_format v_dst_pixfmt = {0}; - uint32_t v_dst_bits_per_pixel = 0; - uint32_t v_dst_bytes_per_pixel = 0; - uint64_t v_dst_bytes_per_row = 0; - wuffs_base__slice_u8 v_dst_palette = {0}; - wuffs_base__table_u8 v_tab = {0}; - wuffs_base__slice_u8 v_row = {0}; - wuffs_base__slice_u8 v_dst = {0}; - uint64_t v_i = 0; - uint64_t v_n = 0; - uint32_t v_p0 = 0; - uint8_t v_code = 0; - uint8_t v_indexes[2] = {0}; - uint32_t v_rle_state = 0; - uint32_t v_chunk_bits = 0; - uint32_t v_chunk_count = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst); - v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt); - if ((v_dst_bits_per_pixel & 7) != 0) { - status = wuffs_base__make_status(wuffs_base__error__unsupported_option); - goto exit; - } - v_dst_bytes_per_pixel = (v_dst_bits_per_pixel / 8); - v_dst_bytes_per_row = ((uint64_t)((self->private_impl.f_width * v_dst_bytes_per_pixel))); - v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8_ij(self->private_data.f_scratch, 1024, 2048)); - v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0); - v_rle_state = self->private_impl.f_rle_state; - label__outer__continue:; - while (true) { - v_row = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y); - if (v_dst_bytes_per_row < ((uint64_t)(v_row.len))) { - v_row = wuffs_base__slice_u8__subslice_j(v_row, v_dst_bytes_per_row); - } - label__middle__continue:; - while (true) { - v_i = (((uint64_t)(self->private_impl.f_dst_x)) * ((uint64_t)(v_dst_bytes_per_pixel))); - if (v_i <= ((uint64_t)(v_row.len))) { - v_dst = wuffs_base__slice_u8__subslice_i(v_row, v_i); - } else { - v_dst = wuffs_base__utility__empty_slice_u8(); - } - while (true) { - label__inner__continue:; - while (true) { - if (v_rle_state == 0) { - if (((uint64_t)(io2_a_src - iop_a_src)) < 1) { - goto label__goto_suspend__break; - } - v_code = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); - iop_a_src += 1; - if (v_code == 0) { - v_rle_state = 2; - goto label__inner__continue; - } - self->private_impl.f_rle_length = ((uint32_t)(v_code)); - v_rle_state = 1; - goto label__inner__continue; - } else if (v_rle_state == 1) { - if (((uint64_t)(io2_a_src - iop_a_src)) < 1) { - goto label__goto_suspend__break; - } - v_code = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); - iop_a_src += 1; - if (self->private_impl.f_bits_per_pixel == 8) { - v_p0 = 0; - while (v_p0 < self->private_impl.f_rle_length) { - self->private_data.f_scratch[v_p0] = v_code; - v_p0 += 1; - } - } else { - v_indexes[0] = ((uint8_t)((v_code >> 4))); - v_indexes[1] = (v_code & 15); - v_p0 = 0; - while (v_p0 < self->private_impl.f_rle_length) { - self->private_data.f_scratch[(v_p0 + 0)] = v_indexes[0]; - self->private_data.f_scratch[(v_p0 + 1)] = v_indexes[1]; - v_p0 += 2; - } - } - wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, self->private_impl.f_rle_length)); - wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, self->private_impl.f_rle_length); - v_rle_state = 0; - goto label__middle__continue; - } else if (v_rle_state == 2) { - if (((uint64_t)(io2_a_src - iop_a_src)) < 1) { - goto label__goto_suspend__break; - } - v_code = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); - iop_a_src += 1; - if (v_code < 2) { - if ((self->private_impl.f_dst_y >= self->private_impl.f_height) && (v_code == 0)) { - status = wuffs_base__make_status(wuffs_bmp__error__bad_rle_compression); - goto exit; - } - wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black(&self->private_impl.f_swizzler, v_dst, v_dst_palette, 18446744073709551615u); - self->private_impl.f_dst_x = 0; - self->private_impl.f_dst_y += self->private_impl.f_dst_y_inc; - if (v_code > 0) { - goto label__outer__break; - } - v_rle_state = 0; - goto label__outer__continue; - } else if (v_code == 2) { - v_rle_state = 4; - goto label__inner__continue; - } - self->private_impl.f_rle_length = ((uint32_t)(v_code)); - self->private_impl.f_rle_padded = ((self->private_impl.f_bits_per_pixel == 8) && ((v_code & 1) != 0)); - v_rle_state = 3; - goto label__inner__continue; - } else if (v_rle_state == 3) { - if (self->private_impl.f_bits_per_pixel == 8) { - v_n = wuffs_base__pixel_swizzler__limited_swizzle_u32_interleaved_from_reader( - &self->private_impl.f_swizzler, - self->private_impl.f_rle_length, - v_dst, - v_dst_palette, - &iop_a_src, - io2_a_src); - wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)((v_n & 4294967295)))); - wuffs_base__u32__sat_sub_indirect(&self->private_impl.f_rle_length, ((uint32_t)((v_n & 4294967295)))); - } else { - v_chunk_count = ((self->private_impl.f_rle_length + 3) / 4); - v_p0 = 0; - while ((v_chunk_count > 0) && (((uint64_t)(io2_a_src - iop_a_src)) >= 2)) { - v_chunk_bits = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src))); - iop_a_src += 2; - self->private_data.f_scratch[(v_p0 + 0)] = ((uint8_t)((15 & (v_chunk_bits >> 12)))); - self->private_data.f_scratch[(v_p0 + 1)] = ((uint8_t)((15 & (v_chunk_bits >> 8)))); - self->private_data.f_scratch[(v_p0 + 2)] = ((uint8_t)((15 & (v_chunk_bits >> 4)))); - self->private_data.f_scratch[(v_p0 + 3)] = ((uint8_t)((15 & (v_chunk_bits >> 0)))); - v_p0 = ((v_p0 & 255) + 4); - v_chunk_count -= 1; - } - v_p0 = wuffs_base__u32__min(v_p0, self->private_impl.f_rle_length); - wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, v_p0)); - wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, v_p0); - wuffs_base__u32__sat_sub_indirect(&self->private_impl.f_rle_length, v_p0); - } - if (self->private_impl.f_rle_length > 0) { - goto label__goto_suspend__break; - } - if (self->private_impl.f_rle_padded) { - if (((uint64_t)(io2_a_src - iop_a_src)) < 1) { - goto label__goto_suspend__break; - } - iop_a_src += 1; - self->private_impl.f_rle_padded = false; - } - v_rle_state = 0; - goto label__middle__continue; - } else if (v_rle_state == 4) { - if (((uint64_t)(io2_a_src - iop_a_src)) < 1) { - goto label__goto_suspend__break; - } - self->private_impl.f_rle_delta_x = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); - iop_a_src += 1; - v_rle_state = 5; - goto label__inner__continue; - } - if (((uint64_t)(io2_a_src - iop_a_src)) < 1) { - goto label__goto_suspend__break; - } - v_code = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); - iop_a_src += 1; - if (self->private_impl.f_rle_delta_x > 0) { - wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black(&self->private_impl.f_swizzler, v_dst, v_dst_palette, ((uint64_t)(self->private_impl.f_rle_delta_x))); - wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)(self->private_impl.f_rle_delta_x))); - self->private_impl.f_rle_delta_x = 0; - if (self->private_impl.f_dst_x > self->private_impl.f_width) { - status = wuffs_base__make_status(wuffs_bmp__error__bad_rle_compression); - goto exit; - } - } - if (v_code > 0) { -#if defined(__GNUC__) -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wconversion" -#endif - v_code -= 1; -#if defined(__GNUC__) -#pragma GCC diagnostic pop -#endif - while (true) { - self->private_impl.f_dst_y += self->private_impl.f_dst_y_inc; - if (self->private_impl.f_dst_y >= self->private_impl.f_height) { - status = wuffs_base__make_status(wuffs_bmp__error__bad_rle_compression); - goto exit; - } - v_row = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y); - if (v_dst_bytes_per_row < ((uint64_t)(v_row.len))) { - v_row = wuffs_base__slice_u8__subslice_j(v_row, v_dst_bytes_per_row); - } - if (v_code <= 0) { - wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black(&self->private_impl.f_swizzler, v_row, v_dst_palette, ((uint64_t)(self->private_impl.f_dst_x))); - goto label__0__break; - } - wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black(&self->private_impl.f_swizzler, v_row, v_dst_palette, 18446744073709551615u); -#if defined(__GNUC__) -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wconversion" -#endif - v_code -= 1; -#if defined(__GNUC__) -#pragma GCC diagnostic pop -#endif - } - label__0__break:; - } - v_rle_state = 0; - goto label__middle__continue; - } - } - label__goto_suspend__break:; - self->private_impl.f_rle_state = v_rle_state; - status = wuffs_base__make_status(wuffs_bmp__note__internal_note_short_read); - goto ok; - } - } - label__outer__break:; - while (self->private_impl.f_dst_y < self->private_impl.f_height) { - v_row = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y); - if (v_dst_bytes_per_row < ((uint64_t)(v_row.len))) { - v_row = wuffs_base__slice_u8__subslice_j(v_row, v_dst_bytes_per_row); - } - wuffs_base__pixel_swizzler__swizzle_interleaved_transparent_black(&self->private_impl.f_swizzler, v_row, v_dst_palette, 18446744073709551615u); - self->private_impl.f_dst_y += self->private_impl.f_dst_y_inc; - } - status = wuffs_base__make_status(NULL); - goto ok; - - ok: - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func bmp.decoder.swizzle_bitfields - -static wuffs_base__status -wuffs_bmp__decoder__swizzle_bitfields( - wuffs_bmp__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - wuffs_base__pixel_format v_dst_pixfmt = {0}; - uint32_t v_dst_bits_per_pixel = 0; - uint32_t v_dst_bytes_per_pixel = 0; - uint64_t v_dst_bytes_per_row = 0; - wuffs_base__slice_u8 v_dst_palette = {0}; - wuffs_base__table_u8 v_tab = {0}; - wuffs_base__slice_u8 v_dst = {0}; - uint64_t v_i = 0; - uint64_t v_n = 0; - uint32_t v_p0 = 0; - uint32_t v_p1 = 0; - uint32_t v_p1_temp = 0; - uint32_t v_num_bits = 0; - uint32_t v_c = 0; - uint32_t v_c32 = 0; - uint32_t v_channel = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst); - v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt); - if ((v_dst_bits_per_pixel & 7) != 0) { - status = wuffs_base__make_status(wuffs_base__error__unsupported_option); - goto exit; - } - v_dst_bytes_per_pixel = (v_dst_bits_per_pixel / 8); - v_dst_bytes_per_row = ((uint64_t)((self->private_impl.f_width * v_dst_bytes_per_pixel))); - v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8_ij(self->private_data.f_scratch, 1024, 2048)); - v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0); - label__outer__continue:; - while (true) { - while (self->private_impl.f_pending_pad > 0) { - if (((uint64_t)(io2_a_src - iop_a_src)) <= 0) { - status = wuffs_base__make_status(wuffs_bmp__note__internal_note_short_read); - goto ok; - } - self->private_impl.f_pending_pad -= 1; - iop_a_src += 1; - } - while (true) { - if (self->private_impl.f_dst_x == self->private_impl.f_width) { - self->private_impl.f_dst_x = 0; - self->private_impl.f_dst_y += self->private_impl.f_dst_y_inc; - if (self->private_impl.f_dst_y >= self->private_impl.f_height) { - if (self->private_impl.f_height > 0) { - self->private_impl.f_pending_pad = self->private_impl.f_pad_per_row; - } - goto label__outer__break; - } else if (self->private_impl.f_pad_per_row != 0) { - self->private_impl.f_pending_pad = self->private_impl.f_pad_per_row; - goto label__outer__continue; - } - } - v_p1_temp = ((uint32_t)(self->private_impl.f_width - self->private_impl.f_dst_x)); - v_p1 = wuffs_base__u32__min(v_p1_temp, 256); - v_p0 = 0; - while (v_p0 < v_p1) { - if (self->private_impl.f_bits_per_pixel == 16) { - if (((uint64_t)(io2_a_src - iop_a_src)) < 2) { - goto label__0__break; - } - v_c32 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src))); - iop_a_src += 2; - } else { - if (((uint64_t)(io2_a_src - iop_a_src)) < 4) { - goto label__0__break; - } - v_c32 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); - iop_a_src += 4; - } - v_channel = 0; - while (v_channel < 4) { - if (self->private_impl.f_channel_num_bits[v_channel] == 0) { - self->private_data.f_scratch[((8 * v_p0) + (2 * v_channel) + 0)] = 255; - self->private_data.f_scratch[((8 * v_p0) + (2 * v_channel) + 1)] = 255; - } else { - v_c = ((v_c32 & self->private_impl.f_channel_masks[v_channel]) >> self->private_impl.f_channel_shifts[v_channel]); - v_num_bits = ((uint32_t)(self->private_impl.f_channel_num_bits[v_channel])); - while (v_num_bits < 16) { - v_c |= ((uint32_t)(v_c << v_num_bits)); - v_num_bits *= 2; - } - v_c >>= (v_num_bits - 16); - self->private_data.f_scratch[((8 * v_p0) + (2 * v_channel) + 0)] = ((uint8_t)((255 & (v_c >> 0)))); - self->private_data.f_scratch[((8 * v_p0) + (2 * v_channel) + 1)] = ((uint8_t)((255 & (v_c >> 8)))); - } - v_channel += 1; - } - v_p0 += 1; - } - label__0__break:; - v_dst = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y); - if (v_dst_bytes_per_row < ((uint64_t)(v_dst.len))) { - v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_bytes_per_row); - } - v_i = (((uint64_t)(self->private_impl.f_dst_x)) * ((uint64_t)(v_dst_bytes_per_pixel))); - if (v_i >= ((uint64_t)(v_dst.len))) { - v_n = ((uint64_t)(v_p0)); - } else { - v_n = wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, (8 * v_p0))); - } - if (v_n == 0) { - status = wuffs_base__make_status(wuffs_bmp__note__internal_note_short_read); - goto ok; - } - wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)((v_n & 4294967295)))); - } - } - label__outer__break:; - status = wuffs_base__make_status(NULL); - goto ok; - - ok: - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func bmp.decoder.swizzle_low_bit_depth - -static wuffs_base__status -wuffs_bmp__decoder__swizzle_low_bit_depth( - wuffs_bmp__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - wuffs_base__pixel_format v_dst_pixfmt = {0}; - uint32_t v_dst_bits_per_pixel = 0; - uint32_t v_dst_bytes_per_pixel = 0; - uint64_t v_dst_bytes_per_row = 0; - wuffs_base__slice_u8 v_dst_palette = {0}; - wuffs_base__table_u8 v_tab = {0}; - wuffs_base__slice_u8 v_dst = {0}; - uint64_t v_i = 0; - uint64_t v_n = 0; - uint32_t v_p0 = 0; - uint32_t v_chunk_bits = 0; - uint32_t v_chunk_count = 0; - uint32_t v_pixels_per_chunk = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst); - v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt); - if ((v_dst_bits_per_pixel & 7) != 0) { - status = wuffs_base__make_status(wuffs_base__error__unsupported_option); - goto exit; - } - v_dst_bytes_per_pixel = (v_dst_bits_per_pixel / 8); - v_dst_bytes_per_row = ((uint64_t)((self->private_impl.f_width * v_dst_bytes_per_pixel))); - v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8_ij(self->private_data.f_scratch, 1024, 2048)); - v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0); - label__loop__continue:; - while (true) { - if (self->private_impl.f_dst_x == self->private_impl.f_width) { - self->private_impl.f_dst_x = 0; - self->private_impl.f_dst_y += self->private_impl.f_dst_y_inc; - if (self->private_impl.f_dst_y >= self->private_impl.f_height) { - goto label__loop__break; - } - } - v_dst = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y); - if (v_dst_bytes_per_row < ((uint64_t)(v_dst.len))) { - v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_bytes_per_row); - } - v_i = (((uint64_t)(self->private_impl.f_dst_x)) * ((uint64_t)(v_dst_bytes_per_pixel))); - if (v_i >= ((uint64_t)(v_dst.len))) { - if (self->private_impl.f_bits_per_pixel == 1) { - v_chunk_count = ((wuffs_base__u32__sat_sub(self->private_impl.f_width, self->private_impl.f_dst_x) + 31) / 32); - v_pixels_per_chunk = 32; - } else if (self->private_impl.f_bits_per_pixel == 2) { - v_chunk_count = ((wuffs_base__u32__sat_sub(self->private_impl.f_width, self->private_impl.f_dst_x) + 15) / 16); - v_pixels_per_chunk = 16; - } else { - v_chunk_count = ((wuffs_base__u32__sat_sub(self->private_impl.f_width, self->private_impl.f_dst_x) + 7) / 8); - v_pixels_per_chunk = 8; - } - while ((v_chunk_count >= 64) && (((uint64_t)(io2_a_src - iop_a_src)) >= 256)) { - iop_a_src += 256; - self->private_impl.f_dst_x = wuffs_base__u32__min(self->private_impl.f_width, ((uint32_t)(self->private_impl.f_dst_x + (v_pixels_per_chunk * 64)))); - v_chunk_count -= 64; - } - while ((v_chunk_count >= 8) && (((uint64_t)(io2_a_src - iop_a_src)) >= 32)) { - iop_a_src += 32; - self->private_impl.f_dst_x = wuffs_base__u32__min(self->private_impl.f_width, ((uint32_t)(self->private_impl.f_dst_x + (v_pixels_per_chunk * 8)))); - v_chunk_count -= 8; - } - while (v_chunk_count > 0) { - if (((uint64_t)(io2_a_src - iop_a_src)) < 4) { - status = wuffs_base__make_status(wuffs_bmp__note__internal_note_short_read); - goto ok; - } - iop_a_src += 4; - self->private_impl.f_dst_x = wuffs_base__u32__min(self->private_impl.f_width, ((uint32_t)(self->private_impl.f_dst_x + (v_pixels_per_chunk * 1)))); - v_chunk_count -= 1; - } - goto label__loop__continue; - } - v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_i); - v_p0 = 0; - if (self->private_impl.f_bits_per_pixel == 1) { - v_chunk_count = ((wuffs_base__u32__sat_sub(self->private_impl.f_width, self->private_impl.f_dst_x) + 31) / 32); - v_chunk_count = wuffs_base__u32__min(v_chunk_count, 16); - while ((v_chunk_count > 0) && (((uint64_t)(io2_a_src - iop_a_src)) >= 4)) { - v_chunk_bits = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); - iop_a_src += 4; - self->private_data.f_scratch[(v_p0 + 0)] = ((uint8_t)((1 & (v_chunk_bits >> 31)))); - self->private_data.f_scratch[(v_p0 + 1)] = ((uint8_t)((1 & (v_chunk_bits >> 30)))); - self->private_data.f_scratch[(v_p0 + 2)] = ((uint8_t)((1 & (v_chunk_bits >> 29)))); - self->private_data.f_scratch[(v_p0 + 3)] = ((uint8_t)((1 & (v_chunk_bits >> 28)))); - self->private_data.f_scratch[(v_p0 + 4)] = ((uint8_t)((1 & (v_chunk_bits >> 27)))); - self->private_data.f_scratch[(v_p0 + 5)] = ((uint8_t)((1 & (v_chunk_bits >> 26)))); - self->private_data.f_scratch[(v_p0 + 6)] = ((uint8_t)((1 & (v_chunk_bits >> 25)))); - self->private_data.f_scratch[(v_p0 + 7)] = ((uint8_t)((1 & (v_chunk_bits >> 24)))); - self->private_data.f_scratch[(v_p0 + 8)] = ((uint8_t)((1 & (v_chunk_bits >> 23)))); - self->private_data.f_scratch[(v_p0 + 9)] = ((uint8_t)((1 & (v_chunk_bits >> 22)))); - self->private_data.f_scratch[(v_p0 + 10)] = ((uint8_t)((1 & (v_chunk_bits >> 21)))); - self->private_data.f_scratch[(v_p0 + 11)] = ((uint8_t)((1 & (v_chunk_bits >> 20)))); - self->private_data.f_scratch[(v_p0 + 12)] = ((uint8_t)((1 & (v_chunk_bits >> 19)))); - self->private_data.f_scratch[(v_p0 + 13)] = ((uint8_t)((1 & (v_chunk_bits >> 18)))); - self->private_data.f_scratch[(v_p0 + 14)] = ((uint8_t)((1 & (v_chunk_bits >> 17)))); - self->private_data.f_scratch[(v_p0 + 15)] = ((uint8_t)((1 & (v_chunk_bits >> 16)))); - self->private_data.f_scratch[(v_p0 + 16)] = ((uint8_t)((1 & (v_chunk_bits >> 15)))); - self->private_data.f_scratch[(v_p0 + 17)] = ((uint8_t)((1 & (v_chunk_bits >> 14)))); - self->private_data.f_scratch[(v_p0 + 18)] = ((uint8_t)((1 & (v_chunk_bits >> 13)))); - self->private_data.f_scratch[(v_p0 + 19)] = ((uint8_t)((1 & (v_chunk_bits >> 12)))); - self->private_data.f_scratch[(v_p0 + 20)] = ((uint8_t)((1 & (v_chunk_bits >> 11)))); - self->private_data.f_scratch[(v_p0 + 21)] = ((uint8_t)((1 & (v_chunk_bits >> 10)))); - self->private_data.f_scratch[(v_p0 + 22)] = ((uint8_t)((1 & (v_chunk_bits >> 9)))); - self->private_data.f_scratch[(v_p0 + 23)] = ((uint8_t)((1 & (v_chunk_bits >> 8)))); - self->private_data.f_scratch[(v_p0 + 24)] = ((uint8_t)((1 & (v_chunk_bits >> 7)))); - self->private_data.f_scratch[(v_p0 + 25)] = ((uint8_t)((1 & (v_chunk_bits >> 6)))); - self->private_data.f_scratch[(v_p0 + 26)] = ((uint8_t)((1 & (v_chunk_bits >> 5)))); - self->private_data.f_scratch[(v_p0 + 27)] = ((uint8_t)((1 & (v_chunk_bits >> 4)))); - self->private_data.f_scratch[(v_p0 + 28)] = ((uint8_t)((1 & (v_chunk_bits >> 3)))); - self->private_data.f_scratch[(v_p0 + 29)] = ((uint8_t)((1 & (v_chunk_bits >> 2)))); - self->private_data.f_scratch[(v_p0 + 30)] = ((uint8_t)((1 & (v_chunk_bits >> 1)))); - self->private_data.f_scratch[(v_p0 + 31)] = ((uint8_t)((1 & (v_chunk_bits >> 0)))); - v_p0 = ((v_p0 & 511) + 32); - v_chunk_count -= 1; - } - } else if (self->private_impl.f_bits_per_pixel == 2) { - v_chunk_count = ((wuffs_base__u32__sat_sub(self->private_impl.f_width, self->private_impl.f_dst_x) + 15) / 16); - v_chunk_count = wuffs_base__u32__min(v_chunk_count, 32); - while ((v_chunk_count > 0) && (((uint64_t)(io2_a_src - iop_a_src)) >= 4)) { - v_chunk_bits = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); - iop_a_src += 4; - self->private_data.f_scratch[(v_p0 + 0)] = ((uint8_t)((3 & (v_chunk_bits >> 30)))); - self->private_data.f_scratch[(v_p0 + 1)] = ((uint8_t)((3 & (v_chunk_bits >> 28)))); - self->private_data.f_scratch[(v_p0 + 2)] = ((uint8_t)((3 & (v_chunk_bits >> 26)))); - self->private_data.f_scratch[(v_p0 + 3)] = ((uint8_t)((3 & (v_chunk_bits >> 24)))); - self->private_data.f_scratch[(v_p0 + 4)] = ((uint8_t)((3 & (v_chunk_bits >> 22)))); - self->private_data.f_scratch[(v_p0 + 5)] = ((uint8_t)((3 & (v_chunk_bits >> 20)))); - self->private_data.f_scratch[(v_p0 + 6)] = ((uint8_t)((3 & (v_chunk_bits >> 18)))); - self->private_data.f_scratch[(v_p0 + 7)] = ((uint8_t)((3 & (v_chunk_bits >> 16)))); - self->private_data.f_scratch[(v_p0 + 8)] = ((uint8_t)((3 & (v_chunk_bits >> 14)))); - self->private_data.f_scratch[(v_p0 + 9)] = ((uint8_t)((3 & (v_chunk_bits >> 12)))); - self->private_data.f_scratch[(v_p0 + 10)] = ((uint8_t)((3 & (v_chunk_bits >> 10)))); - self->private_data.f_scratch[(v_p0 + 11)] = ((uint8_t)((3 & (v_chunk_bits >> 8)))); - self->private_data.f_scratch[(v_p0 + 12)] = ((uint8_t)((3 & (v_chunk_bits >> 6)))); - self->private_data.f_scratch[(v_p0 + 13)] = ((uint8_t)((3 & (v_chunk_bits >> 4)))); - self->private_data.f_scratch[(v_p0 + 14)] = ((uint8_t)((3 & (v_chunk_bits >> 2)))); - self->private_data.f_scratch[(v_p0 + 15)] = ((uint8_t)((3 & (v_chunk_bits >> 0)))); - v_p0 = ((v_p0 & 511) + 16); - v_chunk_count -= 1; - } - } else { - v_chunk_count = ((wuffs_base__u32__sat_sub(self->private_impl.f_width, self->private_impl.f_dst_x) + 7) / 8); - v_chunk_count = wuffs_base__u32__min(v_chunk_count, 64); - while ((v_chunk_count > 0) && (((uint64_t)(io2_a_src - iop_a_src)) >= 4)) { - v_chunk_bits = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); - iop_a_src += 4; - self->private_data.f_scratch[(v_p0 + 0)] = ((uint8_t)((15 & (v_chunk_bits >> 28)))); - self->private_data.f_scratch[(v_p0 + 1)] = ((uint8_t)((15 & (v_chunk_bits >> 24)))); - self->private_data.f_scratch[(v_p0 + 2)] = ((uint8_t)((15 & (v_chunk_bits >> 20)))); - self->private_data.f_scratch[(v_p0 + 3)] = ((uint8_t)((15 & (v_chunk_bits >> 16)))); - self->private_data.f_scratch[(v_p0 + 4)] = ((uint8_t)((15 & (v_chunk_bits >> 12)))); - self->private_data.f_scratch[(v_p0 + 5)] = ((uint8_t)((15 & (v_chunk_bits >> 8)))); - self->private_data.f_scratch[(v_p0 + 6)] = ((uint8_t)((15 & (v_chunk_bits >> 4)))); - self->private_data.f_scratch[(v_p0 + 7)] = ((uint8_t)((15 & (v_chunk_bits >> 0)))); - v_p0 = ((v_p0 & 511) + 8); - v_chunk_count -= 1; - } - } - v_p0 = wuffs_base__u32__min(v_p0, wuffs_base__u32__sat_sub(self->private_impl.f_width, self->private_impl.f_dst_x)); - v_n = wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, v_p0)); - if (v_n == 0) { - status = wuffs_base__make_status(wuffs_bmp__note__internal_note_short_read); - goto ok; - } - wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)((v_n & 4294967295)))); - } - label__loop__break:; - status = wuffs_base__make_status(NULL); - goto ok; - - ok: - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func bmp.decoder.frame_dirty_rect - -WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32 -wuffs_bmp__decoder__frame_dirty_rect( - const wuffs_bmp__decoder* self) { - if (!self) { - return wuffs_base__utility__empty_rect_ie_u32(); - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return wuffs_base__utility__empty_rect_ie_u32(); - } - - return wuffs_base__utility__make_rect_ie_u32( - 0, - 0, - self->private_impl.f_width, - self->private_impl.f_height); -} - -// -------- func bmp.decoder.num_animation_loops - -WUFFS_BASE__MAYBE_STATIC uint32_t -wuffs_bmp__decoder__num_animation_loops( - const wuffs_bmp__decoder* self) { - if (!self) { - return 0; - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return 0; - } - - return 0; -} - -// -------- func bmp.decoder.num_decoded_frame_configs - -WUFFS_BASE__MAYBE_STATIC uint64_t -wuffs_bmp__decoder__num_decoded_frame_configs( - const wuffs_bmp__decoder* self) { - if (!self) { - return 0; - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return 0; - } - - if (self->private_impl.f_call_sequence > 32) { - return 1; - } - return 0; -} - -// -------- func bmp.decoder.num_decoded_frames - -WUFFS_BASE__MAYBE_STATIC uint64_t -wuffs_bmp__decoder__num_decoded_frames( - const wuffs_bmp__decoder* self) { - if (!self) { - return 0; - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return 0; - } - - if (self->private_impl.f_call_sequence > 64) { - return 1; - } - return 0; -} - -// -------- func bmp.decoder.restart_frame - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_bmp__decoder__restart_frame( - wuffs_bmp__decoder* self, - uint64_t a_index, - uint64_t a_io_position) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - - if (self->private_impl.f_call_sequence < 32) { - return wuffs_base__make_status(wuffs_base__error__bad_call_sequence); - } - if (a_index != 0) { - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - self->private_impl.f_call_sequence = 40; - self->private_impl.f_frame_config_io_position = a_io_position; - return wuffs_base__make_status(NULL); -} - -// -------- func bmp.decoder.set_report_metadata - -WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct -wuffs_bmp__decoder__set_report_metadata( - wuffs_bmp__decoder* self, - uint32_t a_fourcc, - bool a_report) { - return wuffs_base__make_empty_struct(); -} - -// -------- func bmp.decoder.tell_me_more - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_bmp__decoder__tell_me_more( - wuffs_bmp__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__more_information* a_minfo, - wuffs_base__io_buffer* a_src) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - if (!a_dst || !a_src) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - if ((self->private_impl.active_coroutine != 0) && - (self->private_impl.active_coroutine != 4)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); - } - self->private_impl.active_coroutine = 0; - wuffs_base__status status = wuffs_base__make_status(NULL); - - wuffs_base__status v_status = wuffs_base__make_status(NULL); - - uint32_t coro_susp_point = self->private_impl.p_tell_me_more[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - while (true) { - { - wuffs_base__status t_0 = wuffs_bmp__decoder__do_tell_me_more(self, a_dst, a_minfo, a_src); - v_status = t_0; - } - if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { - status = wuffs_base__make_status(wuffs_bmp__error__truncated_input); - goto exit; - } - status = v_status; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); - } - - ok: - self->private_impl.p_tell_me_more[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_tell_me_more[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 4 : 0; - - goto exit; - exit: - if (wuffs_base__status__is_error(&status)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - } - return status; -} - -// -------- func bmp.decoder.do_tell_me_more - -static wuffs_base__status -wuffs_bmp__decoder__do_tell_me_more( - wuffs_bmp__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__more_information* a_minfo, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - if (self->private_impl.f_io_redirect_fourcc <= 1) { - status = wuffs_base__make_status(wuffs_base__error__no_more_information); - goto exit; - } - if (a_minfo != NULL) { - wuffs_base__more_information__set(a_minfo, - 1, - self->private_impl.f_io_redirect_fourcc, - 0, - self->private_impl.f_io_redirect_pos, - 18446744073709551615u); - } - self->private_impl.f_io_redirect_fourcc = 1; - - goto ok; - ok: - goto exit; - exit: - return status; -} - -// -------- func bmp.decoder.workbuf_len - -WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 -wuffs_bmp__decoder__workbuf_len( - const wuffs_bmp__decoder* self) { - if (!self) { - return wuffs_base__utility__empty_range_ii_u64(); - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return wuffs_base__utility__empty_range_ii_u64(); - } - - return wuffs_base__utility__make_range_ii_u64(0, 0); -} - -// -------- func bmp.decoder.read_palette - -static wuffs_base__status -wuffs_bmp__decoder__read_palette( - wuffs_bmp__decoder* self, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint32_t v_i = 0; - uint32_t v_argb = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_read_palette[0]; - if (coro_susp_point) { - v_i = self->private_data.s_read_palette[0].v_i; - } - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - if (self->private_impl.f_bitmap_info_len == 12) { - while ((v_i < 256) && (self->private_impl.f_padding >= 3)) { - self->private_impl.f_padding -= 3; - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - uint32_t t_0; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 3)) { - t_0 = ((uint32_t)(wuffs_base__peek_u24le__no_bounds_check(iop_a_src))); - iop_a_src += 3; - } else { - self->private_data.s_read_palette[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_read_palette[0].scratch; - uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0; - if (num_bits_0 == 16) { - t_0 = ((uint32_t)(*scratch)); - break; - } - num_bits_0 += 8; - *scratch |= ((uint64_t)(num_bits_0)) << 56; - } - } - v_argb = t_0; - } - v_argb |= 4278190080; - self->private_data.f_src_palette[((4 * v_i) + 0)] = ((uint8_t)(((v_argb >> 0) & 255))); - self->private_data.f_src_palette[((4 * v_i) + 1)] = ((uint8_t)(((v_argb >> 8) & 255))); - self->private_data.f_src_palette[((4 * v_i) + 2)] = ((uint8_t)(((v_argb >> 16) & 255))); - self->private_data.f_src_palette[((4 * v_i) + 3)] = ((uint8_t)(((v_argb >> 24) & 255))); - v_i += 1; - } - } else { - while ((v_i < 256) && (self->private_impl.f_padding >= 4)) { - self->private_impl.f_padding -= 4; - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); - uint32_t t_1; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_1 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); - iop_a_src += 4; - } else { - self->private_data.s_read_palette[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_read_palette[0].scratch; - uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1; - if (num_bits_1 == 24) { - t_1 = ((uint32_t)(*scratch)); - break; - } - num_bits_1 += 8; - *scratch |= ((uint64_t)(num_bits_1)) << 56; - } - } - v_argb = t_1; - } - v_argb |= 4278190080; - self->private_data.f_src_palette[((4 * v_i) + 0)] = ((uint8_t)(((v_argb >> 0) & 255))); - self->private_data.f_src_palette[((4 * v_i) + 1)] = ((uint8_t)(((v_argb >> 8) & 255))); - self->private_data.f_src_palette[((4 * v_i) + 2)] = ((uint8_t)(((v_argb >> 16) & 255))); - self->private_data.f_src_palette[((4 * v_i) + 3)] = ((uint8_t)(((v_argb >> 24) & 255))); - v_i += 1; - } - } - while (v_i < 256) { - self->private_data.f_src_palette[((4 * v_i) + 0)] = 0; - self->private_data.f_src_palette[((4 * v_i) + 1)] = 0; - self->private_data.f_src_palette[((4 * v_i) + 2)] = 0; - self->private_data.f_src_palette[((4 * v_i) + 3)] = 255; - v_i += 1; - } - - goto ok; - ok: - self->private_impl.p_read_palette[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_read_palette[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_data.s_read_palette[0].v_i = v_i; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func bmp.decoder.process_masks - -static wuffs_base__status -wuffs_bmp__decoder__process_masks( - wuffs_bmp__decoder* self) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint32_t v_i = 0; - uint32_t v_mask = 0; - uint32_t v_n = 0; - - while (v_i < 4) { - v_mask = self->private_impl.f_channel_masks[v_i]; - if (v_mask != 0) { - v_n = 0; - while ((v_mask & 1) == 0) { - v_n += 1; - v_mask >>= 1; - } - self->private_impl.f_channel_shifts[v_i] = ((uint8_t)((v_n & 31))); - v_n = 0; - while ((v_mask & 1) == 1) { - v_n += 1; - v_mask >>= 1; - } - if ((v_mask != 0) || (v_n > 32)) { - status = wuffs_base__make_status(wuffs_bmp__error__bad_header); - goto exit; - } - self->private_impl.f_channel_num_bits[v_i] = ((uint8_t)(v_n)); - } else if (v_i != 3) { - status = wuffs_base__make_status(wuffs_bmp__error__bad_header); - goto exit; - } - v_i += 1; - } - - goto ok; - ok: - goto exit; - exit: - return status; -} - -#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BMP) - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BZIP2) - -// ---------------- Status Codes Implementations - -const char wuffs_bzip2__error__bad_huffman_code_over_subscribed[] = "#bzip2: bad Huffman code (over-subscribed)"; -const char wuffs_bzip2__error__bad_huffman_code_under_subscribed[] = "#bzip2: bad Huffman code (under-subscribed)"; -const char wuffs_bzip2__error__bad_block_header[] = "#bzip2: bad block header"; -const char wuffs_bzip2__error__bad_block_length[] = "#bzip2: bad block length"; -const char wuffs_bzip2__error__bad_checksum[] = "#bzip2: bad checksum"; -const char wuffs_bzip2__error__bad_header[] = "#bzip2: bad header"; -const char wuffs_bzip2__error__bad_number_of_sections[] = "#bzip2: bad number of sections"; -const char wuffs_bzip2__error__truncated_input[] = "#bzip2: truncated input"; -const char wuffs_bzip2__error__unsupported_block_randomization[] = "#bzip2: unsupported block randomization"; -const char wuffs_bzip2__error__internal_error_inconsistent_huffman_decoder_state[] = "#bzip2: internal error: inconsistent Huffman decoder state"; - -// ---------------- Private Consts - -static const uint8_t -WUFFS_BZIP2__CLAMP_TO_5[8] WUFFS_BASE__POTENTIALLY_UNUSED = { - 0, 1, 2, 3, 4, 5, 5, 5, -}; - -static const uint32_t -WUFFS_BZIP2__REV_CRC32_TABLE[256] WUFFS_BASE__POTENTIALLY_UNUSED = { - 0, 79764919, 159529838, 222504665, 319059676, 398814059, 445009330, 507990021, - 638119352, 583659535, 797628118, 726387553, 890018660, 835552979, 1015980042, 944750013, - 1276238704, 1221641927, 1167319070, 1095957929, 1595256236, 1540665371, 1452775106, 1381403509, - 1780037320, 1859660671, 1671105958, 1733955601, 2031960084, 2111593891, 1889500026, 1952343757, - 2552477408, 2632100695, 2443283854, 2506133561, 2334638140, 2414271883, 2191915858, 2254759653, - 3190512472, 3135915759, 3081330742, 3009969537, 2905550212, 2850959411, 2762807018, 2691435357, - 3560074640, 3505614887, 3719321342, 3648080713, 3342211916, 3287746299, 3467911202, 3396681109, - 4063920168, 4143685023, 4223187782, 4286162673, 3779000052, 3858754371, 3904687514, 3967668269, - 881225847, 809987520, 1023691545, 969234094, 662832811, 591600412, 771767749, 717299826, - 311336399, 374308984, 453813921, 533576470, 25881363, 88864420, 134795389, 214552010, - 2023205639, 2086057648, 1897238633, 1976864222, 1804852699, 1867694188, 1645340341, 1724971778, - 1587496639, 1516133128, 1461550545, 1406951526, 1302016099, 1230646740, 1142491917, 1087903418, - 2896545431, 2825181984, 2770861561, 2716262478, 3215044683, 3143675388, 3055782693, 3001194130, - 2326604591, 2389456536, 2200899649, 2280525302, 2578013683, 2640855108, 2418763421, 2498394922, - 3769900519, 3832873040, 3912640137, 3992402750, 4088425275, 4151408268, 4197601365, 4277358050, - 3334271071, 3263032808, 3476998961, 3422541446, 3585640067, 3514407732, 3694837229, 3640369242, - 1762451694, 1842216281, 1619975040, 1682949687, 2047383090, 2127137669, 1938468188, 2001449195, - 1325665622, 1271206113, 1183200824, 1111960463, 1543535498, 1489069629, 1434599652, 1363369299, - 622672798, 568075817, 748617968, 677256519, 907627842, 853037301, 1067152940, 995781531, - 51762726, 131386257, 177728840, 240578815, 269590778, 349224269, 429104020, 491947555, - 4046411278, 4126034873, 4172115296, 4234965207, 3794477266, 3874110821, 3953728444, 4016571915, - 3609705398, 3555108353, 3735388376, 3664026991, 3290680682, 3236090077, 3449943556, 3378572211, - 3174993278, 3120533705, 3032266256, 2961025959, 2923101090, 2868635157, 2813903052, 2742672763, - 2604032198, 2683796849, 2461293480, 2524268063, 2284983834, 2364738477, 2175806836, 2238787779, - 1569362073, 1498123566, 1409854455, 1355396672, 1317987909, 1246755826, 1192025387, 1137557660, - 2072149281, 2135122070, 1912620623, 1992383480, 1753615357, 1816598090, 1627664531, 1707420964, - 295390185, 358241886, 404320391, 483945776, 43990325, 106832002, 186451547, 266083308, - 932423249, 861060070, 1041341759, 986742920, 613929101, 542559546, 756411363, 701822548, - 3316196985, 3244833742, 3425377559, 3370778784, 3601682597, 3530312978, 3744426955, 3689838204, - 3819031489, 3881883254, 3928223919, 4007849240, 4037393693, 4100235434, 4180117107, 4259748804, - 2310601993, 2373574846, 2151335527, 2231098320, 2596047829, 2659030626, 2470359227, 2550115596, - 2947551409, 2876312838, 2788305887, 2733848168, 3165939309, 3094707162, 3040238851, 2985771188, -}; - -// ---------------- Private Initializer Prototypes - -// ---------------- Private Function Prototypes - -static wuffs_base__status -wuffs_bzip2__decoder__do_transform_io( - wuffs_bzip2__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__slice_u8 a_workbuf); - -static wuffs_base__status -wuffs_bzip2__decoder__prepare_block( - wuffs_bzip2__decoder* self, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_bzip2__decoder__read_code_lengths( - wuffs_bzip2__decoder* self, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_bzip2__decoder__build_huffman_tree( - wuffs_bzip2__decoder* self, - uint32_t a_which); - -static wuffs_base__empty_struct -wuffs_bzip2__decoder__build_huffman_table( - wuffs_bzip2__decoder* self, - uint32_t a_which); - -static wuffs_base__empty_struct -wuffs_bzip2__decoder__invert_bwt( - wuffs_bzip2__decoder* self); - -static wuffs_base__empty_struct -wuffs_bzip2__decoder__flush_fast( - wuffs_bzip2__decoder* self, - wuffs_base__io_buffer* a_dst); - -static wuffs_base__status -wuffs_bzip2__decoder__flush_slow( - wuffs_bzip2__decoder* self, - wuffs_base__io_buffer* a_dst); - -static wuffs_base__status -wuffs_bzip2__decoder__decode_huffman_fast( - wuffs_bzip2__decoder* self, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_bzip2__decoder__decode_huffman_slow( - wuffs_bzip2__decoder* self, - wuffs_base__io_buffer* a_src); - -// ---------------- VTables - -const wuffs_base__io_transformer__func_ptrs -wuffs_bzip2__decoder__func_ptrs_for__wuffs_base__io_transformer = { - (wuffs_base__status(*)(void*, - uint32_t, - uint64_t))(&wuffs_bzip2__decoder__set_quirk), - (wuffs_base__status(*)(void*, - wuffs_base__io_buffer*, - wuffs_base__io_buffer*, - wuffs_base__slice_u8))(&wuffs_bzip2__decoder__transform_io), - (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_bzip2__decoder__workbuf_len), -}; - -// ---------------- Initializer Implementations - -wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT -wuffs_bzip2__decoder__initialize( - wuffs_bzip2__decoder* self, - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options){ - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (sizeof(*self) != sizeof_star_self) { - return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver); - } - if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) || - (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) { - return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version); - } - - if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) { - // The whole point of this if-check is to detect an uninitialized *self. - // We disable the warning on GCC. Clang-5.0 does not have this warning. -#if !defined(__clang__) && defined(__GNUC__) -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wmaybe-uninitialized" -#endif - if (self->private_impl.magic != 0) { - return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed); - } -#if !defined(__clang__) && defined(__GNUC__) -#pragma GCC diagnostic pop -#endif - } else { - if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) { - memset(self, 0, sizeof(*self)); - options |= WUFFS_INITIALIZE__ALREADY_ZEROED; - } else { - memset(&(self->private_impl), 0, sizeof(self->private_impl)); - } - } - - self->private_impl.magic = WUFFS_BASE__MAGIC; - self->private_impl.vtable_for__wuffs_base__io_transformer.vtable_name = - wuffs_base__io_transformer__vtable_name; - self->private_impl.vtable_for__wuffs_base__io_transformer.function_pointers = - (const void*)(&wuffs_bzip2__decoder__func_ptrs_for__wuffs_base__io_transformer); - return wuffs_base__make_status(NULL); -} - -wuffs_bzip2__decoder* -wuffs_bzip2__decoder__alloc() { - wuffs_bzip2__decoder* x = - (wuffs_bzip2__decoder*)(calloc(sizeof(wuffs_bzip2__decoder), 1)); - if (!x) { - return NULL; - } - if (wuffs_bzip2__decoder__initialize( - x, sizeof(wuffs_bzip2__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) { - free(x); - return NULL; - } - return x; -} - -size_t -sizeof__wuffs_bzip2__decoder() { - return sizeof(wuffs_bzip2__decoder); -} - -// ---------------- Function Implementations - -// -------- func bzip2.decoder.set_quirk - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_bzip2__decoder__set_quirk( - wuffs_bzip2__decoder* self, - uint32_t a_key, - uint64_t a_value) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - - if (a_key == 1) { - self->private_impl.f_ignore_checksum = (a_value > 0); - return wuffs_base__make_status(NULL); - } - return wuffs_base__make_status(wuffs_base__error__unsupported_option); -} - -// -------- func bzip2.decoder.workbuf_len - -WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 -wuffs_bzip2__decoder__workbuf_len( - const wuffs_bzip2__decoder* self) { - if (!self) { - return wuffs_base__utility__empty_range_ii_u64(); - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return wuffs_base__utility__empty_range_ii_u64(); - } - - return wuffs_base__utility__make_range_ii_u64(0, 0); -} - -// -------- func bzip2.decoder.transform_io - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_bzip2__decoder__transform_io( - wuffs_bzip2__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__slice_u8 a_workbuf) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - if (!a_dst || !a_src) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - if ((self->private_impl.active_coroutine != 0) && - (self->private_impl.active_coroutine != 1)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); - } - self->private_impl.active_coroutine = 0; - wuffs_base__status status = wuffs_base__make_status(NULL); - - wuffs_base__status v_status = wuffs_base__make_status(NULL); - - uint32_t coro_susp_point = self->private_impl.p_transform_io[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - while (true) { - { - wuffs_base__status t_0 = wuffs_bzip2__decoder__do_transform_io(self, a_dst, a_src, a_workbuf); - v_status = t_0; - } - if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { - status = wuffs_base__make_status(wuffs_bzip2__error__truncated_input); - goto exit; - } - status = v_status; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); - } - - ok: - self->private_impl.p_transform_io[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_transform_io[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0; - - goto exit; - exit: - if (wuffs_base__status__is_error(&status)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - } - return status; -} - -// -------- func bzip2.decoder.do_transform_io - -static wuffs_base__status -wuffs_bzip2__decoder__do_transform_io( - wuffs_bzip2__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__slice_u8 a_workbuf) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint8_t v_c = 0; - uint32_t v_i = 0; - uint64_t v_tag = 0; - wuffs_base__status v_status = wuffs_base__make_status(NULL); - uint32_t v_final_checksum_want = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_do_transform_io[0]; - if (coro_susp_point) { - v_i = self->private_data.s_do_transform_io[0].v_i; - v_tag = self->private_data.s_do_transform_io[0].v_tag; - v_final_checksum_want = self->private_data.s_do_transform_io[0].v_final_checksum_want; - } - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_0 = *iop_a_src++; - v_c = t_0; - } - if (v_c != 66) { - status = wuffs_base__make_status(wuffs_bzip2__error__bad_header); - goto exit; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_1 = *iop_a_src++; - v_c = t_1; - } - if (v_c != 90) { - status = wuffs_base__make_status(wuffs_bzip2__error__bad_header); - goto exit; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_2 = *iop_a_src++; - v_c = t_2; - } - if (v_c != 104) { - status = wuffs_base__make_status(wuffs_bzip2__error__bad_header); - goto exit; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_3 = *iop_a_src++; - v_c = t_3; - } - if ((v_c < 49) || (57 < v_c)) { - status = wuffs_base__make_status(wuffs_bzip2__error__bad_header); - goto exit; - } - self->private_impl.f_max_incl_block_size = (((uint32_t)((v_c - 48))) * 100000); - while (true) { - v_tag = 0; - v_i = 0; - while (v_i < 48) { - if (self->private_impl.f_n_bits <= 0) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_4 = *iop_a_src++; - v_c = t_4; - } - self->private_impl.f_bits = (((uint32_t)(v_c)) << 24); - self->private_impl.f_n_bits = 8; - } - v_tag <<= 1; - v_tag |= ((uint64_t)((self->private_impl.f_bits >> 31))); - self->private_impl.f_bits <<= 1; - self->private_impl.f_n_bits -= 1; - v_i += 1; - } - if (v_tag == 25779555029136) { - goto label__0__break; - } else if (v_tag != 54156738319193) { - status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_header); - goto exit; - } - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); - status = wuffs_bzip2__decoder__prepare_block(self, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - self->private_impl.f_block_size = 0; - self->private_impl.f_decode_huffman_finished = false; - self->private_impl.f_decode_huffman_which = WUFFS_BZIP2__CLAMP_TO_5[(self->private_data.f_huffman_selectors[0] & 7)]; - self->private_impl.f_decode_huffman_ticks = 50; - self->private_impl.f_decode_huffman_section = 0; - self->private_impl.f_decode_huffman_run_shift = 0; - while ( ! self->private_impl.f_decode_huffman_finished) { - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - v_status = wuffs_bzip2__decoder__decode_huffman_fast(self, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (wuffs_base__status__is_error(&v_status)) { - status = v_status; - goto exit; - } else if (self->private_impl.f_decode_huffman_finished) { - goto label__1__break; - } - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7); - status = wuffs_bzip2__decoder__decode_huffman_slow(self, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - } - label__1__break:; - wuffs_bzip2__decoder__invert_bwt(self); - self->private_impl.f_block_checksum_have = 4294967295; - if (self->private_impl.f_original_pointer >= self->private_impl.f_block_size) { - status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length); - goto exit; - } - self->private_impl.f_flush_pointer = (self->private_data.f_bwt[self->private_impl.f_original_pointer] >> 12); - self->private_impl.f_flush_repeat_count = 0; - self->private_impl.f_flush_prev = 0; - while (self->private_impl.f_block_size > 0) { - wuffs_bzip2__decoder__flush_fast(self, a_dst); - if (self->private_impl.f_block_size <= 0) { - goto label__2__break; - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8); - status = wuffs_bzip2__decoder__flush_slow(self, a_dst); - if (status.repr) { - goto suspend; - } - } - label__2__break:; - self->private_impl.f_block_checksum_have ^= 4294967295; - if ( ! self->private_impl.f_ignore_checksum && (self->private_impl.f_block_checksum_have != self->private_impl.f_block_checksum_want)) { - status = wuffs_base__make_status(wuffs_bzip2__error__bad_checksum); - goto exit; - } - self->private_impl.f_final_checksum_have = (self->private_impl.f_block_checksum_have ^ ((self->private_impl.f_final_checksum_have >> 31) | ((uint32_t)(self->private_impl.f_final_checksum_have << 1)))); - } - label__0__break:; - v_final_checksum_want = 0; - v_i = 0; - while (v_i < 32) { - if (self->private_impl.f_n_bits <= 0) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_5 = *iop_a_src++; - v_c = t_5; - } - self->private_impl.f_bits = (((uint32_t)(v_c)) << 24); - self->private_impl.f_n_bits = 8; - } - v_final_checksum_want <<= 1; - v_final_checksum_want |= (self->private_impl.f_bits >> 31); - self->private_impl.f_bits <<= 1; - self->private_impl.f_n_bits -= 1; - v_i += 1; - } - if ( ! self->private_impl.f_ignore_checksum && (self->private_impl.f_final_checksum_have != v_final_checksum_want)) { - status = wuffs_base__make_status(wuffs_bzip2__error__bad_checksum); - goto exit; - } - - goto ok; - ok: - self->private_impl.p_do_transform_io[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_do_transform_io[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_data.s_do_transform_io[0].v_i = v_i; - self->private_data.s_do_transform_io[0].v_tag = v_tag; - self->private_data.s_do_transform_io[0].v_final_checksum_want = v_final_checksum_want; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func bzip2.decoder.prepare_block - -static wuffs_base__status -wuffs_bzip2__decoder__prepare_block( - wuffs_bzip2__decoder* self, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint8_t v_c = 0; - uint32_t v_i = 0; - uint32_t v_j = 0; - uint32_t v_selector = 0; - uint32_t v_sel_ff = 0; - uint8_t v_movee = 0; - wuffs_base__status v_status = wuffs_base__make_status(NULL); - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_prepare_block[0]; - if (coro_susp_point) { - v_i = self->private_data.s_prepare_block[0].v_i; - v_selector = self->private_data.s_prepare_block[0].v_selector; - } - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - self->private_impl.f_block_checksum_want = 0; - v_i = 0; - while (v_i < 32) { - if (self->private_impl.f_n_bits <= 0) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_0 = *iop_a_src++; - v_c = t_0; - } - self->private_impl.f_bits = (((uint32_t)(v_c)) << 24); - self->private_impl.f_n_bits = 8; - } - self->private_impl.f_block_checksum_want <<= 1; - self->private_impl.f_block_checksum_want |= (self->private_impl.f_bits >> 31); - self->private_impl.f_bits <<= 1; - self->private_impl.f_n_bits -= 1; - v_i += 1; - } - if (self->private_impl.f_n_bits <= 0) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_1 = *iop_a_src++; - v_c = t_1; - } - self->private_impl.f_bits = (((uint32_t)(v_c)) << 24); - self->private_impl.f_n_bits = 8; - } - if ((self->private_impl.f_bits >> 31) != 0) { - status = wuffs_base__make_status(wuffs_bzip2__error__unsupported_block_randomization); - goto exit; - } - self->private_impl.f_bits <<= 1; - self->private_impl.f_n_bits -= 1; - self->private_impl.f_original_pointer = 0; - v_i = 0; - while (v_i < 24) { - if (self->private_impl.f_n_bits <= 0) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_2 = *iop_a_src++; - v_c = t_2; - } - self->private_impl.f_bits = (((uint32_t)(v_c)) << 24); - self->private_impl.f_n_bits = 8; - } - self->private_impl.f_original_pointer <<= 1; - self->private_impl.f_original_pointer |= (self->private_impl.f_bits >> 31); - self->private_impl.f_bits <<= 1; - self->private_impl.f_n_bits -= 1; - v_i += 1; - } - v_i = 0; - while (v_i < 256) { - self->private_data.f_presence[v_i] = 0; - v_i += 1; - } - v_i = 0; - while (v_i < 256) { - if (self->private_impl.f_n_bits <= 0) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_3 = *iop_a_src++; - v_c = t_3; - } - self->private_impl.f_bits = (((uint32_t)(v_c)) << 24); - self->private_impl.f_n_bits = 8; - } - if ((self->private_impl.f_bits >> 31) != 0) { - self->private_data.f_presence[v_i] = 1; - } - self->private_impl.f_bits <<= 1; - self->private_impl.f_n_bits -= 1; - v_i += 16; - } - self->private_data.f_scratch = 0; - v_i = 0; - label__0__continue:; - while (v_i < 256) { - if (self->private_data.f_presence[v_i] == 0) { - v_i += 16; - goto label__0__continue; - } - while (true) { - if (self->private_impl.f_n_bits <= 0) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_4 = *iop_a_src++; - v_c = t_4; - } - self->private_impl.f_bits = (((uint32_t)(v_c)) << 24); - self->private_impl.f_n_bits = 8; - } - self->private_data.f_scratch += (self->private_impl.f_bits >> 31); - self->private_data.f_presence[(v_i & 255)] = ((uint8_t)((self->private_impl.f_bits >> 31))); - self->private_impl.f_bits <<= 1; - self->private_impl.f_n_bits -= 1; - v_i += 1; - if ((v_i & 15) == 0) { - goto label__1__break; - } - } - label__1__break:; - } - if ((self->private_data.f_scratch < 1) || (256 < self->private_data.f_scratch)) { - status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_header); - goto exit; - } - self->private_impl.f_num_symbols = (self->private_data.f_scratch + 2); - self->private_data.f_scratch = 0; - v_i = 0; - while (v_i < 3) { - if (self->private_impl.f_n_bits <= 0) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_5 = *iop_a_src++; - v_c = t_5; - } - self->private_impl.f_bits = (((uint32_t)(v_c)) << 24); - self->private_impl.f_n_bits = 8; - } - self->private_data.f_scratch <<= 1; - self->private_data.f_scratch |= (self->private_impl.f_bits >> 31); - self->private_impl.f_bits <<= 1; - self->private_impl.f_n_bits -= 1; - v_i += 1; - } - if ((self->private_data.f_scratch < 2) || (6 < self->private_data.f_scratch)) { - status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_header); - goto exit; - } - self->private_impl.f_num_huffman_codes = self->private_data.f_scratch; - self->private_data.f_scratch = 0; - v_i = 0; - while (v_i < 15) { - if (self->private_impl.f_n_bits <= 0) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_6 = *iop_a_src++; - v_c = t_6; - } - self->private_impl.f_bits = (((uint32_t)(v_c)) << 24); - self->private_impl.f_n_bits = 8; - } - self->private_data.f_scratch <<= 1; - self->private_data.f_scratch |= (self->private_impl.f_bits >> 31); - self->private_impl.f_bits <<= 1; - self->private_impl.f_n_bits -= 1; - v_i += 1; - } - if ((self->private_data.f_scratch < 1) || (18001 < self->private_data.f_scratch)) { - status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_header); - goto exit; - } - self->private_impl.f_num_sections = self->private_data.f_scratch; - v_i = 0; - while (v_i < self->private_impl.f_num_huffman_codes) { - self->private_data.f_mtft[v_i] = ((uint8_t)(v_i)); - v_i += 1; - } - v_i = 0; - while (v_i < self->private_impl.f_num_sections) { - v_selector = 0; - while (true) { - if (self->private_impl.f_n_bits <= 0) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_7 = *iop_a_src++; - v_c = t_7; - } - self->private_impl.f_bits = (((uint32_t)(v_c)) << 24); - self->private_impl.f_n_bits = 8; - } - if ((self->private_impl.f_bits >> 31) == 0) { - self->private_impl.f_bits <<= 1; - self->private_impl.f_n_bits -= 1; - goto label__2__break; - } - self->private_impl.f_bits <<= 1; - self->private_impl.f_n_bits -= 1; - v_selector += 1; - if (v_selector >= self->private_impl.f_num_huffman_codes) { - status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_header); - goto exit; - } - } - label__2__break:; - if (v_selector == 0) { - self->private_data.f_huffman_selectors[v_i] = self->private_data.f_mtft[0]; - } else { - v_sel_ff = (v_selector & 255); - v_movee = self->private_data.f_mtft[v_sel_ff]; - wuffs_base__slice_u8__copy_from_slice(wuffs_base__make_slice_u8_ij(self->private_data.f_mtft, 1, (1 + v_sel_ff)), wuffs_base__make_slice_u8(self->private_data.f_mtft, v_sel_ff)); - self->private_data.f_mtft[0] = v_movee; - self->private_data.f_huffman_selectors[v_i] = v_movee; - } - v_i += 1; - } - v_i = 0; - while (v_i < self->private_impl.f_num_huffman_codes) { - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9); - status = wuffs_bzip2__decoder__read_code_lengths(self, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - v_status = wuffs_bzip2__decoder__build_huffman_tree(self, v_i); - if (wuffs_base__status__is_error(&v_status)) { - status = v_status; - goto exit; - } - wuffs_bzip2__decoder__build_huffman_table(self, v_i); - v_i += 1; - } - v_i = 0; - v_j = 0; - while (v_i < 256) { - if (self->private_data.f_presence[v_i] != 0) { - self->private_data.f_mtft[(v_j & 255)] = ((uint8_t)(v_i)); - v_j += 1; - } - v_i += 1; - } - v_i = 0; - while (v_i < 256) { - self->private_data.f_letter_counts[v_i] = 0; - v_i += 1; - } - - goto ok; - ok: - self->private_impl.p_prepare_block[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_prepare_block[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_data.s_prepare_block[0].v_i = v_i; - self->private_data.s_prepare_block[0].v_selector = v_selector; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func bzip2.decoder.read_code_lengths - -static wuffs_base__status -wuffs_bzip2__decoder__read_code_lengths( - wuffs_bzip2__decoder* self, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint8_t v_c = 0; - uint32_t v_i = 0; - uint32_t v_code_length = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_read_code_lengths[0]; - if (coro_susp_point) { - v_i = self->private_data.s_read_code_lengths[0].v_i; - v_code_length = self->private_data.s_read_code_lengths[0].v_code_length; - } - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - self->private_impl.f_code_lengths_bitmask = 0; - v_i = 0; - while (v_i < 5) { - if (self->private_impl.f_n_bits <= 0) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_0 = *iop_a_src++; - v_c = t_0; - } - self->private_impl.f_bits = (((uint32_t)(v_c)) << 24); - self->private_impl.f_n_bits = 8; - } - v_code_length <<= 1; - v_code_length |= (self->private_impl.f_bits >> 31); - self->private_impl.f_bits <<= 1; - self->private_impl.f_n_bits -= 1; - v_i += 1; - } - v_i = 0; - while (v_i < self->private_impl.f_num_symbols) { - while (true) { - if ((v_code_length < 1) || (20 < v_code_length)) { - status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_header); - goto exit; - } - if (self->private_impl.f_n_bits <= 0) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_1 = *iop_a_src++; - v_c = t_1; - } - self->private_impl.f_bits = (((uint32_t)(v_c)) << 24); - self->private_impl.f_n_bits = 8; - } - if ((self->private_impl.f_bits >> 31) == 0) { - self->private_impl.f_bits <<= 1; - self->private_impl.f_n_bits -= 1; - goto label__0__break; - } - self->private_impl.f_bits <<= 1; - self->private_impl.f_n_bits -= 1; - if (self->private_impl.f_n_bits <= 0) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_2 = *iop_a_src++; - v_c = t_2; - } - self->private_impl.f_bits = (((uint32_t)(v_c)) << 24); - self->private_impl.f_n_bits = 8; - } - if ((self->private_impl.f_bits >> 31) == 0) { - v_code_length += 1; - } else { - v_code_length -= 1; - } - self->private_impl.f_bits <<= 1; - self->private_impl.f_n_bits -= 1; - } - label__0__break:; - self->private_impl.f_code_lengths_bitmask |= (((uint32_t)(1)) << (v_code_length & 31)); - self->private_data.f_bwt[v_i] = v_code_length; - v_i += 1; - } - - goto ok; - ok: - self->private_impl.p_read_code_lengths[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_read_code_lengths[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_data.s_read_code_lengths[0].v_i = v_i; - self->private_data.s_read_code_lengths[0].v_code_length = v_code_length; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func bzip2.decoder.build_huffman_tree - -static wuffs_base__status -wuffs_bzip2__decoder__build_huffman_tree( - wuffs_bzip2__decoder* self, - uint32_t a_which) { - uint32_t v_code_length = 0; - uint32_t v_symbol_index = 0; - uint32_t v_num_branch_nodes = 0; - uint32_t v_stack_height = 0; - uint32_t v_stack_values[21] = {0}; - uint32_t v_node_index = 0; - uint16_t v_leaf_value = 0; - - self->private_data.f_huffman_trees[a_which][0][0] = 0; - self->private_data.f_huffman_trees[a_which][0][1] = 0; - v_num_branch_nodes = 1; - v_stack_height = 1; - v_stack_values[0] = 0; - v_code_length = 1; - label__0__continue:; - while (v_code_length <= 20) { - if ((self->private_impl.f_code_lengths_bitmask & (((uint32_t)(1)) << v_code_length)) == 0) { - v_code_length += 1; - goto label__0__continue; - } - v_symbol_index = 0; - label__1__continue:; - while (v_symbol_index < self->private_impl.f_num_symbols) { - if (self->private_data.f_bwt[v_symbol_index] != v_code_length) { - v_symbol_index += 1; - goto label__1__continue; - } - while (true) { - if (v_stack_height <= 0) { - return wuffs_base__make_status(wuffs_bzip2__error__bad_huffman_code_over_subscribed); - } else if (v_stack_height >= v_code_length) { - goto label__2__break; - } - v_node_index = v_stack_values[(v_stack_height - 1)]; - if (self->private_data.f_huffman_trees[a_which][v_node_index][0] == 0) { - self->private_data.f_huffman_trees[a_which][v_node_index][0] = ((uint16_t)(v_num_branch_nodes)); - } else { - self->private_data.f_huffman_trees[a_which][v_node_index][1] = ((uint16_t)(v_num_branch_nodes)); - } - if (v_num_branch_nodes >= 257) { - return wuffs_base__make_status(wuffs_bzip2__error__bad_huffman_code_under_subscribed); - } - v_stack_values[v_stack_height] = v_num_branch_nodes; - self->private_data.f_huffman_trees[a_which][v_num_branch_nodes][0] = 0; - self->private_data.f_huffman_trees[a_which][v_num_branch_nodes][1] = 0; - v_num_branch_nodes += 1; - v_stack_height += 1; - } - label__2__break:; - v_node_index = v_stack_values[(v_stack_height - 1)]; - if (v_symbol_index < 2) { - v_leaf_value = ((uint16_t)((769 + v_symbol_index))); - } else if ((v_symbol_index + 1) < self->private_impl.f_num_symbols) { - v_leaf_value = ((uint16_t)((511 + v_symbol_index))); - } else { - v_leaf_value = 768; - } - if (self->private_data.f_huffman_trees[a_which][v_node_index][0] == 0) { - self->private_data.f_huffman_trees[a_which][v_node_index][0] = v_leaf_value; - } else { - self->private_data.f_huffman_trees[a_which][v_node_index][1] = v_leaf_value; - v_stack_height -= 1; - while (v_stack_height > 0) { - v_node_index = v_stack_values[(v_stack_height - 1)]; - if (self->private_data.f_huffman_trees[a_which][v_node_index][1] == 0) { - goto label__3__break; - } - v_stack_height -= 1; - } - label__3__break:; - } - v_symbol_index += 1; - } - v_code_length += 1; - } - if (v_stack_height != 0) { - return wuffs_base__make_status(wuffs_bzip2__error__bad_huffman_code_under_subscribed); - } - return wuffs_base__make_status(NULL); -} - -// -------- func bzip2.decoder.build_huffman_table - -static wuffs_base__empty_struct -wuffs_bzip2__decoder__build_huffman_table( - wuffs_bzip2__decoder* self, - uint32_t a_which) { - uint32_t v_i = 0; - uint32_t v_bits = 0; - uint16_t v_n_bits = 0; - uint16_t v_child = 0; - - while (v_i < 256) { - v_bits = (v_i << 24); - v_n_bits = 0; - v_child = 0; - while ((v_child < 257) && (v_n_bits < 8)) { - v_child = self->private_data.f_huffman_trees[a_which][v_child][(v_bits >> 31)]; - v_bits <<= 1; -#if defined(__GNUC__) -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wconversion" -#endif - v_n_bits += 1; -#if defined(__GNUC__) -#pragma GCC diagnostic pop -#endif - } - self->private_data.f_huffman_tables[a_which][v_i] = ((uint16_t)((v_child | (v_n_bits << 12)))); - v_i += 1; - } - return wuffs_base__make_empty_struct(); -} - -// -------- func bzip2.decoder.invert_bwt - -static wuffs_base__empty_struct -wuffs_bzip2__decoder__invert_bwt( - wuffs_bzip2__decoder* self) { - uint32_t v_i = 0; - uint32_t v_letter = 0; - uint32_t v_sum = 0; - uint32_t v_old_sum = 0; - - v_sum = 0; - v_i = 0; - while (v_i < 256) { - v_old_sum = v_sum; - v_sum += self->private_data.f_letter_counts[v_i]; - self->private_data.f_letter_counts[v_i] = v_old_sum; - v_i += 1; - } - v_i = 0; - while (v_i < self->private_impl.f_block_size) { - v_letter = (self->private_data.f_bwt[v_i] & 255); - self->private_data.f_bwt[(self->private_data.f_letter_counts[v_letter] & 1048575)] |= (v_i << 12); - self->private_data.f_letter_counts[v_letter] += 1; - v_i += 1; - } - return wuffs_base__make_empty_struct(); -} - -// -------- func bzip2.decoder.flush_fast - -static wuffs_base__empty_struct -wuffs_bzip2__decoder__flush_fast( - wuffs_bzip2__decoder* self, - wuffs_base__io_buffer* a_dst) { - uint32_t v_flush_pointer = 0; - uint32_t v_flush_repeat_count = 0; - uint8_t v_flush_prev = 0; - uint32_t v_block_checksum_have = 0; - uint32_t v_block_size = 0; - uint32_t v_entry = 0; - uint8_t v_curr = 0; - - uint8_t* iop_a_dst = NULL; - uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_dst && a_dst->data.ptr) { - io0_a_dst = a_dst->data.ptr; - io1_a_dst = io0_a_dst + a_dst->meta.wi; - iop_a_dst = io1_a_dst; - io2_a_dst = io0_a_dst + a_dst->data.len; - if (a_dst->meta.closed) { - io2_a_dst = iop_a_dst; - } - } - - v_flush_pointer = self->private_impl.f_flush_pointer; - v_flush_repeat_count = self->private_impl.f_flush_repeat_count; - v_flush_prev = self->private_impl.f_flush_prev; - v_block_checksum_have = self->private_impl.f_block_checksum_have; - v_block_size = self->private_impl.f_block_size; - while ((v_block_size > 0) && (((uint64_t)(io2_a_dst - iop_a_dst)) >= 255)) { - if (v_flush_repeat_count < 4) { - v_entry = self->private_data.f_bwt[v_flush_pointer]; - v_curr = ((uint8_t)((v_entry & 255))); - v_flush_pointer = (v_entry >> 12); - if (v_curr == v_flush_prev) { - v_flush_repeat_count += 1; - } else { - v_flush_repeat_count = 1; - } - v_block_checksum_have = (WUFFS_BZIP2__REV_CRC32_TABLE[(((uint8_t)((v_block_checksum_have >> 24))) ^ v_curr)] ^ ((uint32_t)(v_block_checksum_have << 8))); - (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, v_curr), iop_a_dst += 1); - v_flush_prev = v_curr; - v_block_size -= 1; - } else { - v_entry = self->private_data.f_bwt[v_flush_pointer]; - v_curr = ((uint8_t)((v_entry & 255))); - v_flush_pointer = (v_entry >> 12); - v_flush_repeat_count = ((uint32_t)(v_curr)); - while (v_flush_repeat_count > 0) { - v_block_checksum_have = (WUFFS_BZIP2__REV_CRC32_TABLE[(((uint8_t)((v_block_checksum_have >> 24))) ^ v_flush_prev)] ^ ((uint32_t)(v_block_checksum_have << 8))); - if (((uint64_t)(io2_a_dst - iop_a_dst)) > 0) { - (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, v_flush_prev), iop_a_dst += 1); - } - v_flush_repeat_count -= 1; - } - v_flush_repeat_count = 0; - v_flush_prev = v_curr; - v_block_size -= 1; - } - } - self->private_impl.f_flush_pointer = v_flush_pointer; - self->private_impl.f_flush_repeat_count = v_flush_repeat_count; - self->private_impl.f_flush_prev = v_flush_prev; - self->private_impl.f_block_checksum_have = v_block_checksum_have; - if (v_block_size <= 900000) { - self->private_impl.f_block_size = v_block_size; - } - if (a_dst && a_dst->data.ptr) { - a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); - } - - return wuffs_base__make_empty_struct(); -} - -// -------- func bzip2.decoder.flush_slow - -static wuffs_base__status -wuffs_bzip2__decoder__flush_slow( - wuffs_bzip2__decoder* self, - wuffs_base__io_buffer* a_dst) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint32_t v_flush_pointer = 0; - uint32_t v_flush_repeat_count = 0; - uint8_t v_flush_prev = 0; - uint32_t v_block_checksum_have = 0; - uint32_t v_block_size = 0; - uint32_t v_entry = 0; - uint8_t v_curr = 0; - - uint8_t* iop_a_dst = NULL; - uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_dst && a_dst->data.ptr) { - io0_a_dst = a_dst->data.ptr; - io1_a_dst = io0_a_dst + a_dst->meta.wi; - iop_a_dst = io1_a_dst; - io2_a_dst = io0_a_dst + a_dst->data.len; - if (a_dst->meta.closed) { - io2_a_dst = iop_a_dst; - } - } - - uint32_t coro_susp_point = self->private_impl.p_flush_slow[0]; - if (coro_susp_point) { - v_flush_pointer = self->private_data.s_flush_slow[0].v_flush_pointer; - v_flush_repeat_count = self->private_data.s_flush_slow[0].v_flush_repeat_count; - v_flush_prev = self->private_data.s_flush_slow[0].v_flush_prev; - v_block_checksum_have = self->private_data.s_flush_slow[0].v_block_checksum_have; - v_block_size = self->private_data.s_flush_slow[0].v_block_size; - v_curr = self->private_data.s_flush_slow[0].v_curr; - } - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - v_flush_pointer = self->private_impl.f_flush_pointer; - v_flush_repeat_count = self->private_impl.f_flush_repeat_count; - v_flush_prev = self->private_impl.f_flush_prev; - v_block_checksum_have = self->private_impl.f_block_checksum_have; - v_block_size = self->private_impl.f_block_size; - while ((v_block_size > 0) && ! (self->private_impl.p_flush_slow[0] != 0)) { - if (v_flush_repeat_count < 4) { - v_entry = self->private_data.f_bwt[v_flush_pointer]; - v_curr = ((uint8_t)((v_entry & 255))); - v_flush_pointer = (v_entry >> 12); - if (v_curr == v_flush_prev) { - v_flush_repeat_count += 1; - } else { - v_flush_repeat_count = 1; - } - v_block_checksum_have = (WUFFS_BZIP2__REV_CRC32_TABLE[(((uint8_t)((v_block_checksum_have >> 24))) ^ v_curr)] ^ ((uint32_t)(v_block_checksum_have << 8))); - self->private_data.s_flush_slow[0].scratch = v_curr; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - if (iop_a_dst == io2_a_dst) { - status = wuffs_base__make_status(wuffs_base__suspension__short_write); - goto suspend; - } - *iop_a_dst++ = ((uint8_t)(self->private_data.s_flush_slow[0].scratch)); - v_flush_prev = v_curr; - v_block_size -= 1; - } else { - v_entry = self->private_data.f_bwt[v_flush_pointer]; - v_curr = ((uint8_t)((v_entry & 255))); - v_flush_pointer = (v_entry >> 12); - v_flush_repeat_count = ((uint32_t)(v_curr)); - while (v_flush_repeat_count > 0) { - v_block_checksum_have = (WUFFS_BZIP2__REV_CRC32_TABLE[(((uint8_t)((v_block_checksum_have >> 24))) ^ v_flush_prev)] ^ ((uint32_t)(v_block_checksum_have << 8))); - self->private_data.s_flush_slow[0].scratch = v_flush_prev; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - if (iop_a_dst == io2_a_dst) { - status = wuffs_base__make_status(wuffs_base__suspension__short_write); - goto suspend; - } - *iop_a_dst++ = ((uint8_t)(self->private_data.s_flush_slow[0].scratch)); - v_flush_repeat_count -= 1; - } - v_flush_repeat_count = 0; - v_flush_prev = v_curr; - v_block_size -= 1; - } - } - self->private_impl.f_flush_pointer = v_flush_pointer; - self->private_impl.f_flush_repeat_count = v_flush_repeat_count; - self->private_impl.f_flush_prev = v_flush_prev; - self->private_impl.f_block_checksum_have = v_block_checksum_have; - if (v_block_size <= 900000) { - self->private_impl.f_block_size = v_block_size; - } - - goto ok; - ok: - self->private_impl.p_flush_slow[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_flush_slow[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_data.s_flush_slow[0].v_flush_pointer = v_flush_pointer; - self->private_data.s_flush_slow[0].v_flush_repeat_count = v_flush_repeat_count; - self->private_data.s_flush_slow[0].v_flush_prev = v_flush_prev; - self->private_data.s_flush_slow[0].v_block_checksum_have = v_block_checksum_have; - self->private_data.s_flush_slow[0].v_block_size = v_block_size; - self->private_data.s_flush_slow[0].v_curr = v_curr; - - goto exit; - exit: - if (a_dst && a_dst->data.ptr) { - a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); - } - - return status; -} - -// -------- func bzip2.decoder.decode_huffman_fast - -static wuffs_base__status -wuffs_bzip2__decoder__decode_huffman_fast( - wuffs_bzip2__decoder* self, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint32_t v_bits = 0; - uint32_t v_n_bits = 0; - uint32_t v_block_size = 0; - uint8_t v_which = 0; - uint32_t v_ticks = 0; - uint32_t v_section = 0; - uint32_t v_run_shift = 0; - uint16_t v_table_entry = 0; - uint16_t v_child = 0; - uint32_t v_child_ff = 0; - uint32_t v_i = 0; - uint32_t v_j = 0; - uint32_t v_output = 0; - uint32_t v_run = 0; - uint32_t v_mtft0 = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - v_bits = self->private_impl.f_bits; - v_n_bits = self->private_impl.f_n_bits; - v_block_size = self->private_impl.f_block_size; - v_which = self->private_impl.f_decode_huffman_which; - v_ticks = self->private_impl.f_decode_huffman_ticks; - v_section = self->private_impl.f_decode_huffman_section; - v_run_shift = self->private_impl.f_decode_huffman_run_shift; - label__outer__continue:; - while (((uint64_t)(io2_a_src - iop_a_src)) >= 4) { - if (v_ticks > 0) { - v_ticks -= 1; - } else { - v_ticks = 49; - v_section += 1; - if (v_section >= self->private_impl.f_num_sections) { - status = wuffs_base__make_status(wuffs_bzip2__error__bad_number_of_sections); - goto exit; - } - v_which = WUFFS_BZIP2__CLAMP_TO_5[(self->private_data.f_huffman_selectors[(v_section & 32767)] & 7)]; - } - v_bits |= (wuffs_base__peek_u32be__no_bounds_check(iop_a_src) >> v_n_bits); - iop_a_src += ((31 - v_n_bits) >> 3); - v_n_bits |= 24; - v_table_entry = self->private_data.f_huffman_tables[v_which][(v_bits >> 24)]; - v_bits <<= (v_table_entry >> 12); - v_n_bits -= ((uint32_t)((v_table_entry >> 12))); - v_child = (v_table_entry & 1023); - while (v_child < 257) { - v_child = self->private_data.f_huffman_trees[v_which][v_child][(v_bits >> 31)]; - v_bits <<= 1; - if (v_n_bits <= 0) { - status = wuffs_base__make_status(wuffs_bzip2__error__internal_error_inconsistent_huffman_decoder_state); - goto exit; - } - v_n_bits -= 1; - } - if (v_child < 768) { - v_child_ff = ((uint32_t)((v_child & 255))); - v_output = ((uint32_t)(self->private_data.f_mtft[v_child_ff])); - wuffs_base__slice_u8__copy_from_slice(wuffs_base__make_slice_u8_ij(self->private_data.f_mtft, 1, (1 + v_child_ff)), wuffs_base__make_slice_u8(self->private_data.f_mtft, v_child_ff)); - self->private_data.f_mtft[0] = ((uint8_t)(v_output)); - self->private_data.f_letter_counts[v_output] += 1; - self->private_data.f_bwt[v_block_size] = v_output; - if (v_block_size >= self->private_impl.f_max_incl_block_size) { - status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length); - goto exit; - } - v_block_size += 1; - v_run_shift = 0; - goto label__outer__continue; - } else if (v_child == 768) { - self->private_impl.f_decode_huffman_finished = true; - goto label__outer__break; - } - if (v_run_shift >= 23) { - status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length); - goto exit; - } - v_run = ((((uint32_t)(v_child)) & 3) << v_run_shift); - v_run_shift += 1; - v_i = v_block_size; - v_j = (v_run + v_block_size); - if (v_j > self->private_impl.f_max_incl_block_size) { - status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length); - goto exit; - } - v_block_size = v_j; - v_mtft0 = ((uint32_t)(self->private_data.f_mtft[0])); - self->private_data.f_letter_counts[v_mtft0] += v_run; - while (v_i < v_j) { - self->private_data.f_bwt[v_i] = v_mtft0; - v_i += 1; - } - } - label__outer__break:; - self->private_impl.f_bits = v_bits; - self->private_impl.f_n_bits = v_n_bits; - self->private_impl.f_block_size = v_block_size; - self->private_impl.f_decode_huffman_which = v_which; - self->private_impl.f_decode_huffman_ticks = v_ticks; - self->private_impl.f_decode_huffman_section = v_section; - self->private_impl.f_decode_huffman_run_shift = v_run_shift; - status = wuffs_base__make_status(NULL); - goto ok; - - ok: - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func bzip2.decoder.decode_huffman_slow - -static wuffs_base__status -wuffs_bzip2__decoder__decode_huffman_slow( - wuffs_bzip2__decoder* self, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint8_t v_c = 0; - uint32_t v_node_index = 0; - uint16_t v_child = 0; - uint32_t v_child_ff = 0; - uint32_t v_i = 0; - uint32_t v_j = 0; - uint32_t v_output = 0; - uint32_t v_run = 0; - uint32_t v_mtft0 = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_decode_huffman_slow[0]; - if (coro_susp_point) { - v_node_index = self->private_data.s_decode_huffman_slow[0].v_node_index; - } - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - while ( ! (self->private_impl.p_decode_huffman_slow[0] != 0)) { - if (self->private_impl.f_decode_huffman_ticks > 0) { - self->private_impl.f_decode_huffman_ticks -= 1; - } else { - self->private_impl.f_decode_huffman_ticks = 49; - self->private_impl.f_decode_huffman_section += 1; - if (self->private_impl.f_decode_huffman_section >= self->private_impl.f_num_sections) { - status = wuffs_base__make_status(wuffs_bzip2__error__bad_number_of_sections); - goto exit; - } - self->private_impl.f_decode_huffman_which = WUFFS_BZIP2__CLAMP_TO_5[(self->private_data.f_huffman_selectors[(self->private_impl.f_decode_huffman_section & 32767)] & 7)]; - } - v_node_index = 0; - label__0__continue:; - while (true) { - if (self->private_impl.f_n_bits <= 0) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_0 = *iop_a_src++; - v_c = t_0; - } - self->private_impl.f_bits = (((uint32_t)(v_c)) << 24); - self->private_impl.f_n_bits = 8; - } - v_child = self->private_data.f_huffman_trees[self->private_impl.f_decode_huffman_which][v_node_index][(self->private_impl.f_bits >> 31)]; - self->private_impl.f_bits <<= 1; - self->private_impl.f_n_bits -= 1; - if (v_child < 257) { - v_node_index = ((uint32_t)(v_child)); - goto label__0__continue; - } else if (v_child < 768) { - v_child_ff = ((uint32_t)((v_child & 255))); - v_output = ((uint32_t)(self->private_data.f_mtft[v_child_ff])); - wuffs_base__slice_u8__copy_from_slice(wuffs_base__make_slice_u8_ij(self->private_data.f_mtft, 1, (1 + v_child_ff)), wuffs_base__make_slice_u8(self->private_data.f_mtft, v_child_ff)); - self->private_data.f_mtft[0] = ((uint8_t)(v_output)); - self->private_data.f_letter_counts[v_output] += 1; - self->private_data.f_bwt[self->private_impl.f_block_size] = v_output; - if (self->private_impl.f_block_size >= self->private_impl.f_max_incl_block_size) { - status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length); - goto exit; - } - self->private_impl.f_block_size += 1; - self->private_impl.f_decode_huffman_run_shift = 0; - goto label__0__break; - } else if (v_child == 768) { - self->private_impl.f_decode_huffman_finished = true; - goto label__outer__break; - } - if (self->private_impl.f_decode_huffman_run_shift >= 23) { - status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length); - goto exit; - } - v_run = ((((uint32_t)(v_child)) & 3) << self->private_impl.f_decode_huffman_run_shift); - self->private_impl.f_decode_huffman_run_shift += 1; - v_i = self->private_impl.f_block_size; - v_j = (v_run + self->private_impl.f_block_size); - if (v_j > self->private_impl.f_max_incl_block_size) { - status = wuffs_base__make_status(wuffs_bzip2__error__bad_block_length); - goto exit; - } - self->private_impl.f_block_size = v_j; - v_mtft0 = ((uint32_t)(self->private_data.f_mtft[0])); - self->private_data.f_letter_counts[v_mtft0] += v_run; - while (v_i < v_j) { - self->private_data.f_bwt[v_i] = v_mtft0; - v_i += 1; - } - goto label__0__break; - } - label__0__break:; - } - label__outer__break:; - - goto ok; - ok: - self->private_impl.p_decode_huffman_slow[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_huffman_slow[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_data.s_decode_huffman_slow[0].v_node_index = v_node_index; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BZIP2) - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__CBOR) - -// ---------------- Status Codes Implementations - -const char wuffs_cbor__error__bad_input[] = "#cbor: bad input"; -const char wuffs_cbor__error__unsupported_recursion_depth[] = "#cbor: unsupported recursion depth"; -const char wuffs_cbor__error__internal_error_inconsistent_i_o[] = "#cbor: internal error: inconsistent I/O"; -const char wuffs_cbor__error__internal_error_inconsistent_token_length[] = "#cbor: internal error: inconsistent token length"; - -// ---------------- Private Consts - -static const uint32_t -WUFFS_CBOR__LITERALS[4] WUFFS_BASE__POTENTIALLY_UNUSED = { - 8388612, 8388616, 8388610, 8388609, -}; - -static const uint8_t -WUFFS_CBOR__TOKEN_LENGTHS[32] WUFFS_BASE__POTENTIALLY_UNUSED = { - 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, - 2, 3, 5, 9, 0, 0, 0, 1, -}; - -// ---------------- Private Initializer Prototypes - -// ---------------- Private Function Prototypes - -// ---------------- VTables - -const wuffs_base__token_decoder__func_ptrs -wuffs_cbor__decoder__func_ptrs_for__wuffs_base__token_decoder = { - (wuffs_base__status(*)(void*, - wuffs_base__token_buffer*, - wuffs_base__io_buffer*, - wuffs_base__slice_u8))(&wuffs_cbor__decoder__decode_tokens), - (wuffs_base__status(*)(void*, - uint32_t, - uint64_t))(&wuffs_cbor__decoder__set_quirk), - (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_cbor__decoder__workbuf_len), -}; - -// ---------------- Initializer Implementations - -wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT -wuffs_cbor__decoder__initialize( - wuffs_cbor__decoder* self, - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options){ - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (sizeof(*self) != sizeof_star_self) { - return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver); - } - if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) || - (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) { - return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version); - } - - if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) { - // The whole point of this if-check is to detect an uninitialized *self. - // We disable the warning on GCC. Clang-5.0 does not have this warning. -#if !defined(__clang__) && defined(__GNUC__) -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wmaybe-uninitialized" -#endif - if (self->private_impl.magic != 0) { - return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed); - } -#if !defined(__clang__) && defined(__GNUC__) -#pragma GCC diagnostic pop -#endif - } else { - if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) { - memset(self, 0, sizeof(*self)); - options |= WUFFS_INITIALIZE__ALREADY_ZEROED; - } else { - memset(&(self->private_impl), 0, sizeof(self->private_impl)); - } - } - - self->private_impl.magic = WUFFS_BASE__MAGIC; - self->private_impl.vtable_for__wuffs_base__token_decoder.vtable_name = - wuffs_base__token_decoder__vtable_name; - self->private_impl.vtable_for__wuffs_base__token_decoder.function_pointers = - (const void*)(&wuffs_cbor__decoder__func_ptrs_for__wuffs_base__token_decoder); - return wuffs_base__make_status(NULL); -} - -wuffs_cbor__decoder* -wuffs_cbor__decoder__alloc() { - wuffs_cbor__decoder* x = - (wuffs_cbor__decoder*)(calloc(sizeof(wuffs_cbor__decoder), 1)); - if (!x) { - return NULL; - } - if (wuffs_cbor__decoder__initialize( - x, sizeof(wuffs_cbor__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) { - free(x); - return NULL; - } - return x; -} - -size_t -sizeof__wuffs_cbor__decoder() { - return sizeof(wuffs_cbor__decoder); -} - -// ---------------- Function Implementations - -// -------- func cbor.decoder.set_quirk - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_cbor__decoder__set_quirk( - wuffs_cbor__decoder* self, - uint32_t a_key, - uint64_t a_value) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - - return wuffs_base__make_status(wuffs_base__error__unsupported_option); -} - -// -------- func cbor.decoder.workbuf_len - -WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 -wuffs_cbor__decoder__workbuf_len( - const wuffs_cbor__decoder* self) { - if (!self) { - return wuffs_base__utility__empty_range_ii_u64(); - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return wuffs_base__utility__empty_range_ii_u64(); - } - - return wuffs_base__utility__empty_range_ii_u64(); -} - -// -------- func cbor.decoder.decode_tokens - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_cbor__decoder__decode_tokens( - wuffs_cbor__decoder* self, - wuffs_base__token_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__slice_u8 a_workbuf) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - if (!a_dst || !a_src) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - if ((self->private_impl.active_coroutine != 0) && - (self->private_impl.active_coroutine != 1)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); - } - self->private_impl.active_coroutine = 0; - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint64_t v_string_length = 0; - uint64_t v_n64 = 0; - uint32_t v_depth = 0; - uint32_t v_stack_byte = 0; - uint32_t v_stack_bit = 0; - uint32_t v_stack_val = 0; - uint32_t v_token_length = 0; - uint32_t v_vminor = 0; - uint32_t v_vminor_alt = 0; - uint32_t v_continued = 0; - uint8_t v_c = 0; - uint8_t v_c_major = 0; - uint8_t v_c_minor = 0; - bool v_tagged = false; - uint8_t v_indefinite_string_major_type = 0; - - wuffs_base__token* iop_a_dst = NULL; - wuffs_base__token* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - wuffs_base__token* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - wuffs_base__token* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_dst && a_dst->data.ptr) { - io0_a_dst = a_dst->data.ptr; - io1_a_dst = io0_a_dst + a_dst->meta.wi; - iop_a_dst = io1_a_dst; - io2_a_dst = io0_a_dst + a_dst->data.len; - if (a_dst->meta.closed) { - io2_a_dst = iop_a_dst; - } - } - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_decode_tokens[0]; - if (coro_susp_point) { - v_string_length = self->private_data.s_decode_tokens[0].v_string_length; - v_depth = self->private_data.s_decode_tokens[0].v_depth; - v_tagged = self->private_data.s_decode_tokens[0].v_tagged; - v_indefinite_string_major_type = self->private_data.s_decode_tokens[0].v_indefinite_string_major_type; - } - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - if (self->private_impl.f_end_of_data) { - status = wuffs_base__make_status(wuffs_base__note__end_of_data); - goto ok; - } - label__outer__continue:; - while (true) { - while (true) { - while (true) { - if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 1) { - status = wuffs_base__make_status(wuffs_base__suspension__short_write); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); - goto label__outer__continue; - } - if (((uint64_t)(io2_a_src - iop_a_src)) <= 0) { - if (a_src && a_src->meta.closed) { - status = wuffs_base__make_status(wuffs_cbor__error__bad_input); - goto exit; - } - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2); - goto label__outer__continue; - } - v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); - if ((v_indefinite_string_major_type != 0) && (v_indefinite_string_major_type != (v_c >> 5))) { - if (v_c != 255) { - status = wuffs_base__make_status(wuffs_cbor__error__bad_input); - goto exit; - } - v_vminor = 4194560; - if (v_indefinite_string_major_type == 3) { - v_vminor |= 19; - } - v_indefinite_string_major_type = 0; - iop_a_src += 1; - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(v_vminor)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - goto label__goto_parsed_a_leaf_value__break; - } - iop_a_src += 1; - v_c_major = ((uint8_t)((v_c >> 5))); - v_c_minor = (v_c & 31); - if (v_c_minor < 24) { - v_string_length = ((uint64_t)(v_c_minor)); - } else { - while (true) { - if (v_c_minor == 24) { - if (((uint64_t)(io2_a_src - iop_a_src)) >= 1) { - v_string_length = ((uint64_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))); - iop_a_src += 1; - goto label__goto_have_string_length__break; - } - } else if (v_c_minor == 25) { - if (((uint64_t)(io2_a_src - iop_a_src)) >= 2) { - v_string_length = ((uint64_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src))); - iop_a_src += 2; - goto label__goto_have_string_length__break; - } - } else if (v_c_minor == 26) { - if (((uint64_t)(io2_a_src - iop_a_src)) >= 4) { - v_string_length = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src))); - iop_a_src += 4; - goto label__goto_have_string_length__break; - } - } else if (v_c_minor == 27) { - if (((uint64_t)(io2_a_src - iop_a_src)) >= 8) { - v_string_length = wuffs_base__peek_u64be__no_bounds_check(iop_a_src); - iop_a_src += 8; - goto label__goto_have_string_length__break; - } - } else { - v_string_length = 0; - goto label__goto_have_string_length__break; - } - if (iop_a_src > io1_a_src) { - iop_a_src--; - if (a_src && a_src->meta.closed) { - status = wuffs_base__make_status(wuffs_cbor__error__bad_input); - goto exit; - } - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3); - goto label__outer__continue; - } - status = wuffs_base__make_status(wuffs_cbor__error__internal_error_inconsistent_i_o); - goto exit; - } - label__goto_have_string_length__break:; - } - if (v_c_major == 0) { - if (v_c_minor < 26) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)((14680064 | ((uint32_t)((v_string_length & 65535)))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - goto label__goto_parsed_a_leaf_value__break; - } else if (v_c_minor < 28) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)((14680064 | ((uint32_t)((v_string_length >> 46)))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | - (((uint64_t)(0)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - *iop_a_dst++ = wuffs_base__make_token( - (~(v_string_length & 70368744177663) << WUFFS_BASE__TOKEN__VALUE_EXTENSION__SHIFT) | - (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - goto label__goto_parsed_a_leaf_value__break; - } - } else if (v_c_major == 1) { - if (v_c_minor < 26) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)((12582912 | (2097151 - ((uint32_t)((v_string_length & 65535))))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - goto label__goto_parsed_a_leaf_value__break; - } else if (v_c_minor < 28) { - if (v_string_length < 9223372036854775808u) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)((12582912 | (2097151 - ((uint32_t)((v_string_length >> 46))))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | - (((uint64_t)(0)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - *iop_a_dst++ = wuffs_base__make_token( - (~((18446744073709551615u - v_string_length) & 70368744177663) << WUFFS_BASE__TOKEN__VALUE_EXTENSION__SHIFT) | - (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - } else { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(787997)) << WUFFS_BASE__TOKEN__VALUE_MAJOR__SHIFT) | - (((uint64_t)(16777216)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(9)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - } - goto label__goto_parsed_a_leaf_value__break; - } - } else if (v_c_major == 2) { - if (v_c_minor < 28) { - if (v_string_length == 0) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(4194560)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - goto label__goto_parsed_a_leaf_value__break; - } - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(4194560)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | - (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - } else if (v_c_minor == 31) { - if (v_indefinite_string_major_type != 0) { - goto label__goto_fail__break; - } - v_indefinite_string_major_type = 2; - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(4194560)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - goto label__outer__continue; - } else { - goto label__goto_fail__break; - } - label__0__continue:; - while (true) { - if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) { - status = wuffs_base__make_status(wuffs_base__suspension__short_write); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4); - goto label__0__continue; - } - v_n64 = wuffs_base__u64__min(v_string_length, ((uint64_t)(io2_a_src - iop_a_src))); - v_token_length = ((uint32_t)((v_n64 & 65535))); - if (v_n64 > 65535) { - v_token_length = 65535; - } else if (v_token_length <= 0) { - if (a_src && a_src->meta.closed) { - status = wuffs_base__make_status(wuffs_cbor__error__bad_input); - goto exit; - } - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5); - goto label__0__continue; - } - if (((uint64_t)(io2_a_src - iop_a_src)) < ((uint64_t)(v_token_length))) { - status = wuffs_base__make_status(wuffs_cbor__error__internal_error_inconsistent_token_length); - goto exit; - } - v_string_length -= ((uint64_t)(v_token_length)); - v_continued = 0; - if ((v_string_length > 0) || (v_indefinite_string_major_type > 0)) { - v_continued = 1; - } - iop_a_src += v_token_length; - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(4194816)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(v_continued)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | - (((uint64_t)(v_token_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - if (v_string_length > 0) { - goto label__0__continue; - } else if (v_indefinite_string_major_type > 0) { - goto label__outer__continue; - } - goto label__goto_parsed_a_leaf_value__break; - } - } else if (v_c_major == 3) { - if (v_c_minor < 28) { - if (v_string_length == 0) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(4194579)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - goto label__goto_parsed_a_leaf_value__break; - } - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(4194579)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | - (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - } else if (v_c_minor == 31) { - if (v_indefinite_string_major_type != 0) { - goto label__goto_fail__break; - } - v_indefinite_string_major_type = 3; - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(4194579)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - goto label__outer__continue; - } else { - goto label__goto_fail__break; - } - label__1__continue:; - while (true) { - if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) { - status = wuffs_base__make_status(wuffs_base__suspension__short_write); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(6); - goto label__1__continue; - } - v_n64 = wuffs_base__u64__min(v_string_length, 65535); - v_n64 = ((uint64_t)(wuffs_base__utf_8__longest_valid_prefix(iop_a_src, - ((size_t)(wuffs_base__u64__min(((uint64_t)(io2_a_src - iop_a_src)), v_n64)))))); - v_token_length = ((uint32_t)((v_n64 & 65535))); - if (v_token_length <= 0) { - if ((a_src && a_src->meta.closed) || (((uint64_t)(io2_a_src - iop_a_src)) >= 4)) { - status = wuffs_base__make_status(wuffs_cbor__error__bad_input); - goto exit; - } - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(7); - goto label__1__continue; - } - if (((uint64_t)(io2_a_src - iop_a_src)) < ((uint64_t)(v_token_length))) { - status = wuffs_base__make_status(wuffs_cbor__error__internal_error_inconsistent_token_length); - goto exit; - } - v_string_length -= ((uint64_t)(v_token_length)); - v_continued = 0; - if ((v_string_length > 0) || (v_indefinite_string_major_type > 0)) { - v_continued = 1; - } - iop_a_src += v_token_length; - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(4194819)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(v_continued)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | - (((uint64_t)(v_token_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - if (v_string_length > 0) { - goto label__1__continue; - } else if (v_indefinite_string_major_type > 0) { - goto label__outer__continue; - } - goto label__goto_parsed_a_leaf_value__break; - } - } else if (v_c_major == 4) { - if (WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor] == 0) { - goto label__goto_fail__break; - } else if (v_depth >= 1024) { - v_token_length = ((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])); - while ((v_token_length > 0) && (iop_a_src > io1_a_src)) { - iop_a_src--; - v_token_length -= 1; - } - status = wuffs_base__make_status(wuffs_cbor__error__unsupported_recursion_depth); - goto exit; - } - v_vminor = 2105361; - v_vminor_alt = 2101282; - if (v_depth > 0) { - v_stack_byte = ((v_depth - 1) / 16); - v_stack_bit = (((v_depth - 1) & 15) * 2); - if (0 == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1)) << v_stack_bit))) { - v_vminor = 2105377; - v_vminor_alt = 2105378; - } else { - v_vminor = 2105409; - v_vminor_alt = 2113570; - } - } - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(v_vminor)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - if (v_c_minor == 0) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(v_vminor_alt)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(0)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - goto label__goto_parsed_a_leaf_value__break; - } - v_stack_byte = (v_depth / 16); - v_stack_bit = ((v_depth & 15) * 2); - self->private_data.f_stack[v_stack_byte] &= (4294967295 ^ (((uint32_t)(3)) << v_stack_bit)); - self->private_data.f_container_num_remaining[v_depth] = v_string_length; - v_depth += 1; - v_tagged = false; - goto label__outer__continue; - } else if (v_c_major == 5) { - if (WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor] == 0) { - goto label__goto_fail__break; - } else if (v_depth >= 1024) { - v_token_length = ((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])); - while ((v_token_length > 0) && (iop_a_src > io1_a_src)) { - iop_a_src--; - v_token_length -= 1; - } - status = wuffs_base__make_status(wuffs_cbor__error__unsupported_recursion_depth); - goto exit; - } - v_vminor = 2113553; - v_vminor_alt = 2101314; - if (v_depth > 0) { - v_stack_byte = ((v_depth - 1) / 16); - v_stack_bit = (((v_depth - 1) & 15) * 2); - if (0 == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1)) << v_stack_bit))) { - v_vminor = 2113569; - v_vminor_alt = 2105410; - } else { - v_vminor = 2113601; - v_vminor_alt = 2113602; - } - } - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(v_vminor)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - if (v_c_minor == 0) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(v_vminor_alt)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(0)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - goto label__goto_parsed_a_leaf_value__break; - } - v_stack_byte = (v_depth / 16); - v_stack_bit = ((v_depth & 15) * 2); - self->private_data.f_stack[v_stack_byte] |= (((uint32_t)(3)) << v_stack_bit); - self->private_data.f_container_num_remaining[v_depth] = v_string_length; - v_depth += 1; - v_tagged = false; - goto label__outer__continue; - } else if (v_c_major == 6) { - if (v_c_minor >= 28) { - goto label__goto_fail__break; - } - if (v_string_length < 262144) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(787997)) << WUFFS_BASE__TOKEN__VALUE_MAJOR__SHIFT) | - (((uint64_t)((4194304 | ((uint32_t)(v_string_length))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - } else { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(787997)) << WUFFS_BASE__TOKEN__VALUE_MAJOR__SHIFT) | - (((uint64_t)((4194304 | ((uint32_t)((v_string_length >> 46)))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | - (((uint64_t)(0)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - *iop_a_dst++ = wuffs_base__make_token( - (~(v_string_length & 70368744177663) << WUFFS_BASE__TOKEN__VALUE_EXTENSION__SHIFT) | - (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - } - v_tagged = true; - goto label__outer__continue; - } else if (v_c_major == 7) { - if (v_c_minor < 20) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(787997)) << WUFFS_BASE__TOKEN__VALUE_MAJOR__SHIFT) | - (((uint64_t)((8388608 | ((uint32_t)((v_string_length & 255)))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - goto label__goto_parsed_a_leaf_value__break; - } else if (v_c_minor < 24) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(WUFFS_CBOR__LITERALS[(v_c_minor & 3)])) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - goto label__goto_parsed_a_leaf_value__break; - } else if (v_c_minor == 24) { - if (v_string_length < 24) { - if ( ! (iop_a_src > io1_a_src)) { - status = wuffs_base__make_status(wuffs_cbor__error__internal_error_inconsistent_i_o); - goto exit; - } - iop_a_src--; - goto label__goto_fail__break; - } - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(787997)) << WUFFS_BASE__TOKEN__VALUE_MAJOR__SHIFT) | - (((uint64_t)((8388608 | ((uint32_t)((v_string_length & 255)))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(2)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - goto label__goto_parsed_a_leaf_value__break; - } else if (v_c_minor < 28) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(10490113)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(((uint32_t)(WUFFS_CBOR__TOKEN_LENGTHS[v_c_minor])))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - goto label__goto_parsed_a_leaf_value__break; - } else if (v_c_minor == 31) { - if (v_tagged || (v_depth <= 0)) { - goto label__goto_fail__break; - } - v_depth -= 1; - if (self->private_data.f_container_num_remaining[v_depth] != 0) { - goto label__goto_fail__break; - } - v_stack_byte = (v_depth / 16); - v_stack_bit = ((v_depth & 15) * 2); - v_stack_val = (3 & (self->private_data.f_stack[v_stack_byte] >> v_stack_bit)); - if (v_stack_val == 1) { - goto label__goto_fail__break; - } - if (v_stack_val != 3) { - v_vminor_alt = 2097186; - } else { - v_vminor_alt = 2097218; - } - if (v_depth <= 0) { - v_vminor_alt |= 4096; - } else { - v_stack_byte = ((v_depth - 1) / 16); - v_stack_bit = (((v_depth - 1) & 15) * 2); - if (0 == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1)) << v_stack_bit))) { - v_vminor_alt |= 8192; - } else { - v_vminor_alt |= 16384; - } - } - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(v_vminor_alt)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - goto label__goto_parsed_a_leaf_value__break; - } - } - goto label__goto_fail__break; - } - label__goto_fail__break:; - if (iop_a_src > io1_a_src) { - iop_a_src--; - status = wuffs_base__make_status(wuffs_cbor__error__bad_input); - goto exit; - } - status = wuffs_base__make_status(wuffs_cbor__error__internal_error_inconsistent_i_o); - goto exit; - } - label__goto_parsed_a_leaf_value__break:; - v_tagged = false; - while (v_depth > 0) { - v_stack_byte = ((v_depth - 1) / 16); - v_stack_bit = (((v_depth - 1) & 15) * 2); - self->private_data.f_stack[v_stack_byte] ^= (((uint32_t)(1)) << (v_stack_bit + 1)); - if (1 == (3 & (self->private_data.f_stack[v_stack_byte] >> v_stack_bit))) { - goto label__outer__continue; - } - if (self->private_data.f_container_num_remaining[(v_depth - 1)] <= 0) { - goto label__outer__continue; - } - self->private_data.f_container_num_remaining[(v_depth - 1)] -= 1; - if (self->private_data.f_container_num_remaining[(v_depth - 1)] > 0) { - goto label__outer__continue; - } - label__2__continue:; - while (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) { - status = wuffs_base__make_status(wuffs_base__suspension__short_write); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(8); - goto label__2__continue; - } - v_depth -= 1; - v_stack_byte = (v_depth / 16); - v_stack_bit = ((v_depth & 15) * 2); - if (0 == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1)) << v_stack_bit))) { - v_vminor_alt = 2097186; - } else { - v_vminor_alt = 2097218; - } - if (v_depth <= 0) { - v_vminor_alt |= 4096; - } else { - v_stack_byte = ((v_depth - 1) / 16); - v_stack_bit = (((v_depth - 1) & 15) * 2); - if (0 == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1)) << v_stack_bit))) { - v_vminor_alt |= 8192; - } else { - v_vminor_alt |= 16384; - } - } - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(v_vminor_alt)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(0)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - } - goto label__outer__break; - } - label__outer__break:; - self->private_impl.f_end_of_data = true; - - ok: - self->private_impl.p_decode_tokens[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_tokens[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0; - self->private_data.s_decode_tokens[0].v_string_length = v_string_length; - self->private_data.s_decode_tokens[0].v_depth = v_depth; - self->private_data.s_decode_tokens[0].v_tagged = v_tagged; - self->private_data.s_decode_tokens[0].v_indefinite_string_major_type = v_indefinite_string_major_type; - - goto exit; - exit: - if (a_dst && a_dst->data.ptr) { - a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); - } - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - if (wuffs_base__status__is_error(&status)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - } - return status; -} - -#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__CBOR) - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__CRC32) - -// ---------------- Status Codes Implementations - -// ---------------- Private Consts - -static const uint32_t -WUFFS_CRC32__IEEE_TABLE[16][256] WUFFS_BASE__POTENTIALLY_UNUSED = { - { - 0, 1996959894, 3993919788, 2567524794, 124634137, 1886057615, 3915621685, 2657392035, - 249268274, 2044508324, 3772115230, 2547177864, 162941995, 2125561021, 3887607047, 2428444049, - 498536548, 1789927666, 4089016648, 2227061214, 450548861, 1843258603, 4107580753, 2211677639, - 325883990, 1684777152, 4251122042, 2321926636, 335633487, 1661365465, 4195302755, 2366115317, - 997073096, 1281953886, 3579855332, 2724688242, 1006888145, 1258607687, 3524101629, 2768942443, - 901097722, 1119000684, 3686517206, 2898065728, 853044451, 1172266101, 3705015759, 2882616665, - 651767980, 1373503546, 3369554304, 3218104598, 565507253, 1454621731, 3485111705, 3099436303, - 671266974, 1594198024, 3322730930, 2970347812, 795835527, 1483230225, 3244367275, 3060149565, - 1994146192, 31158534, 2563907772, 4023717930, 1907459465, 112637215, 2680153253, 3904427059, - 2013776290, 251722036, 2517215374, 3775830040, 2137656763, 141376813, 2439277719, 3865271297, - 1802195444, 476864866, 2238001368, 4066508878, 1812370925, 453092731, 2181625025, 4111451223, - 1706088902, 314042704, 2344532202, 4240017532, 1658658271, 366619977, 2362670323, 4224994405, - 1303535960, 984961486, 2747007092, 3569037538, 1256170817, 1037604311, 2765210733, 3554079995, - 1131014506, 879679996, 2909243462, 3663771856, 1141124467, 855842277, 2852801631, 3708648649, - 1342533948, 654459306, 3188396048, 3373015174, 1466479909, 544179635, 3110523913, 3462522015, - 1591671054, 702138776, 2966460450, 3352799412, 1504918807, 783551873, 3082640443, 3233442989, - 3988292384, 2596254646, 62317068, 1957810842, 3939845945, 2647816111, 81470997, 1943803523, - 3814918930, 2489596804, 225274430, 2053790376, 3826175755, 2466906013, 167816743, 2097651377, - 4027552580, 2265490386, 503444072, 1762050814, 4150417245, 2154129355, 426522225, 1852507879, - 4275313526, 2312317920, 282753626, 1742555852, 4189708143, 2394877945, 397917763, 1622183637, - 3604390888, 2714866558, 953729732, 1340076626, 3518719985, 2797360999, 1068828381, 1219638859, - 3624741850, 2936675148, 906185462, 1090812512, 3747672003, 2825379669, 829329135, 1181335161, - 3412177804, 3160834842, 628085408, 1382605366, 3423369109, 3138078467, 570562233, 1426400815, - 3317316542, 2998733608, 733239954, 1555261956, 3268935591, 3050360625, 752459403, 1541320221, - 2607071920, 3965973030, 1969922972, 40735498, 2617837225, 3943577151, 1913087877, 83908371, - 2512341634, 3803740692, 2075208622, 213261112, 2463272603, 3855990285, 2094854071, 198958881, - 2262029012, 4057260610, 1759359992, 534414190, 2176718541, 4139329115, 1873836001, 414664567, - 2282248934, 4279200368, 1711684554, 285281116, 2405801727, 4167216745, 1634467795, 376229701, - 2685067896, 3608007406, 1308918612, 956543938, 2808555105, 3495958263, 1231636301, 1047427035, - 2932959818, 3654703836, 1088359270, 936918000, 2847714899, 3736837829, 1202900863, 817233897, - 3183342108, 3401237130, 1404277552, 615818150, 3134207493, 3453421203, 1423857449, 601450431, - 3009837614, 3294710456, 1567103746, 711928724, 3020668471, 3272380065, 1510334235, 755167117, - }, { - 0, 421212481, 842424962, 724390851, 1684849924, 2105013317, 1448781702, 1329698503, - 3369699848, 3519200073, 4210026634, 3824474571, 2897563404, 3048111693, 2659397006, 2274893007, - 1254232657, 1406739216, 2029285587, 1643069842, 783210325, 934667796, 479770071, 92505238, - 2182846553, 2600511768, 2955803355, 2838940570, 3866582365, 4285295644, 3561045983, 3445231262, - 2508465314, 2359236067, 2813478432, 3198777185, 4058571174, 3908292839, 3286139684, 3670389349, - 1566420650, 1145479147, 1869335592, 1987116393, 959540142, 539646703, 185010476, 303839341, - 3745920755, 3327985586, 3983561841, 4100678960, 3140154359, 2721170102, 2300350837, 2416418868, - 396344571, 243568058, 631889529, 1018359608, 1945336319, 1793607870, 1103436669, 1490954812, - 4034481925, 3915546180, 3259968903, 3679722694, 2484439553, 2366552896, 2787371139, 3208174018, - 950060301, 565965900, 177645455, 328046286, 1556873225, 1171730760, 1861902987, 2011255754, - 3132841300, 2745199637, 2290958294, 2442530455, 3738671184, 3352078609, 3974232786, 4126854035, - 1919080284, 1803150877, 1079293406, 1498383519, 370020952, 253043481, 607678682, 1025720731, - 1711106983, 2095471334, 1472923941, 1322268772, 26324643, 411738082, 866634785, 717028704, - 2904875439, 3024081134, 2668790573, 2248782444, 3376948395, 3495106026, 4219356713, 3798300520, - 792689142, 908347575, 487136116, 68299317, 1263779058, 1380486579, 2036719216, 1618931505, - 3890672638, 4278043327, 3587215740, 3435896893, 2206873338, 2593195963, 2981909624, 2829542713, - 998479947, 580430090, 162921161, 279890824, 1609522511, 1190423566, 1842954189, 1958874764, - 4082766403, 3930137346, 3245109441, 3631694208, 2536953671, 2385372678, 2768287173, 3155920004, - 1900120602, 1750776667, 1131931800, 1517083097, 355290910, 204897887, 656092572, 1040194781, - 3113746450, 2692952403, 2343461520, 2461357009, 3723805974, 3304059991, 4022511508, 4141455061, - 2919742697, 3072101800, 2620513899, 2234183466, 3396041197, 3547351212, 4166851439, 3779471918, - 1725839073, 2143618976, 1424512099, 1307796770, 45282277, 464110244, 813994343, 698327078, - 3838160568, 4259225593, 3606301754, 3488152955, 2158586812, 2578602749, 2996767038, 2877569151, - 740041904, 889656817, 506086962, 120682355, 1215357364, 1366020341, 2051441462, 1667084919, - 3422213966, 3538019855, 4190942668, 3772220557, 2945847882, 3062702859, 2644537544, 2226864521, - 52649286, 439905287, 823476164, 672009861, 1733269570, 2119477507, 1434057408, 1281543041, - 2167981343, 2552493150, 3004082077, 2853541596, 3847487515, 4233048410, 3613549209, 3464057816, - 1239502615, 1358593622, 2077699477, 1657543892, 764250643, 882293586, 532408465, 111204816, - 1585378284, 1197851309, 1816695150, 1968414767, 974272232, 587794345, 136598634, 289367339, - 2527558116, 2411481253, 2760973158, 3179948583, 4073438432, 3956313505, 3237863010, 3655790371, - 347922877, 229101820, 646611775, 1066513022, 1892689081, 1774917112, 1122387515, 1543337850, - 3697634229, 3313392372, 3998419255, 4148705398, 3087642289, 2702352368, 2319436851, 2468674930, - }, { - 0, 29518391, 59036782, 38190681, 118073564, 114017003, 76381362, 89069189, - 236147128, 265370511, 228034006, 206958561, 152762724, 148411219, 178138378, 190596925, - 472294256, 501532999, 530741022, 509615401, 456068012, 451764635, 413917122, 426358261, - 305525448, 334993663, 296822438, 275991697, 356276756, 352202787, 381193850, 393929805, - 944588512, 965684439, 1003065998, 973863097, 1061482044, 1049003019, 1019230802, 1023561829, - 912136024, 933002607, 903529270, 874031361, 827834244, 815125939, 852716522, 856752605, - 611050896, 631869351, 669987326, 640506825, 593644876, 580921211, 551983394, 556069653, - 712553512, 733666847, 704405574, 675154545, 762387700, 749958851, 787859610, 792175277, - 1889177024, 1901651959, 1931368878, 1927033753, 2006131996, 1985040171, 1947726194, 1976933189, - 2122964088, 2135668303, 2098006038, 2093965857, 2038461604, 2017599123, 2047123658, 2076625661, - 1824272048, 1836991623, 1866005214, 1861914857, 1807058540, 1786244187, 1748062722, 1777547317, - 1655668488, 1668093247, 1630251878, 1625932113, 1705433044, 1684323811, 1713505210, 1742760333, - 1222101792, 1226154263, 1263738702, 1251046777, 1339974652, 1310460363, 1281013650, 1301863845, - 1187289752, 1191637167, 1161842422, 1149379777, 1103966788, 1074747507, 1112139306, 1133218845, - 1425107024, 1429406311, 1467333694, 1454888457, 1408811148, 1379576507, 1350309090, 1371438805, - 1524775400, 1528845279, 1499917702, 1487177649, 1575719220, 1546255107, 1584350554, 1605185389, - 3778354048, 3774312887, 3803303918, 3816007129, 3862737756, 3892238699, 3854067506, 3833203973, - 4012263992, 4007927823, 3970080342, 3982554209, 3895452388, 3924658387, 3953866378, 3932773565, - 4245928176, 4241609415, 4271336606, 4283762345, 4196012076, 4225268251, 4187931714, 4166823541, - 4076923208, 4072833919, 4035198246, 4047918865, 4094247316, 4123732899, 4153251322, 4132437965, - 3648544096, 3636082519, 3673983246, 3678331705, 3732010428, 3753090955, 3723829714, 3694611429, - 3614117080, 3601426159, 3572488374, 3576541825, 3496125444, 3516976691, 3555094634, 3525581405, - 3311336976, 3298595879, 3336186494, 3340255305, 3260503756, 3281337595, 3251864226, 3222399125, - 3410866088, 3398419871, 3368647622, 3372945905, 3427010420, 3448139075, 3485520666, 3456284973, - 2444203584, 2423127159, 2452308526, 2481530905, 2527477404, 2539934891, 2502093554, 2497740997, - 2679949304, 2659102159, 2620920726, 2650438049, 2562027300, 2574714131, 2603727690, 2599670141, - 2374579504, 2353749767, 2383274334, 2412743529, 2323684844, 2336421851, 2298759554, 2294686645, - 2207933576, 2186809023, 2149495014, 2178734801, 2224278612, 2236720739, 2266437690, 2262135309, - 2850214048, 2820717207, 2858812622, 2879680249, 2934667388, 2938704459, 2909776914, 2897069605, - 2817622296, 2788420399, 2759153014, 2780249921, 2700618180, 2704950259, 2742877610, 2730399645, - 3049550800, 3020298727, 3057690558, 3078802825, 2999835404, 3004150075, 2974355298, 2961925461, - 3151438440, 3121956959, 3092510214, 3113327665, 3168701108, 3172786307, 3210370778, 3197646061, - }, { - 0, 3099354981, 2852767883, 313896942, 2405603159, 937357362, 627793884, 2648127673, - 3316918511, 2097696650, 1874714724, 3607201537, 1255587768, 4067088605, 3772741427, 1482887254, - 1343838111, 3903140090, 4195393300, 1118632049, 3749429448, 1741137837, 1970407491, 3452858150, - 2511175536, 756094997, 1067759611, 2266550430, 449832999, 2725482306, 2965774508, 142231497, - 2687676222, 412010587, 171665333, 2995192016, 793786473, 2548850444, 2237264098, 1038456711, - 1703315409, 3711623348, 3482275674, 1999841343, 3940814982, 1381529571, 1089329165, 4166106984, - 4029413537, 1217896388, 1512189994, 3802027855, 2135519222, 3354724499, 3577784189, 1845280792, - 899665998, 2367928107, 2677414085, 657096608, 3137160985, 37822588, 284462994, 2823350519, - 2601801789, 598228824, 824021174, 2309093331, 343330666, 2898962447, 3195996129, 113467524, - 1587572946, 3860600759, 4104763481, 1276501820, 3519211397, 1769898208, 2076913422, 3279374443, - 3406630818, 1941006535, 1627703081, 3652755532, 1148164341, 4241751952, 3999682686, 1457141531, - 247015245, 3053797416, 2763059142, 470583459, 2178658330, 963106687, 735213713, 2473467892, - 992409347, 2207944806, 2435792776, 697522413, 3024379988, 217581361, 508405983, 2800865210, - 4271038444, 1177467017, 1419450215, 3962007554, 1911572667, 3377213406, 3690561584, 1665525589, - 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2493785488, 986493953, 319029491, 3178008930, 1083533591, 4009621638, 3342158964, 1767759333, - 3887577823, 1239362382, 1612160956, 3464433197, 864482904, 2649647049, 3022443323, 441336490, - 1706844275, 3419730402, 3793503504, 1282724993, 2978819316, 535149925, 908921239, 2554697734, - 380632892, 3100077741, 2433735263, 1063734222, 3265180603, 1828069930, 1161729752, 3948283721, - 2207997677, 770953084, 71007118, 2857626143, 1470763626, 4190274555, 3490330377, 2120394392, - 4035494306, 1591758899, 1999168705, 3644880208, 616140069, 2328960180, 2736367686, 225524183, - }, -}; - -static const uint8_t -WUFFS_CRC32__IEEE_X86_SSE42_K1K2[16] WUFFS_BASE__POTENTIALLY_UNUSED = { - 212, 43, 68, 84, 1, 0, 0, 0, - 150, 21, 228, 198, 1, 0, 0, 0, -}; - -static const uint8_t -WUFFS_CRC32__IEEE_X86_SSE42_K3K4[16] WUFFS_BASE__POTENTIALLY_UNUSED = { - 208, 151, 25, 117, 1, 0, 0, 0, - 158, 0, 170, 204, 0, 0, 0, 0, -}; - -static const uint8_t -WUFFS_CRC32__IEEE_X86_SSE42_K5ZZ[16] WUFFS_BASE__POTENTIALLY_UNUSED = { - 36, 97, 205, 99, 1, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, -}; - -static const uint8_t -WUFFS_CRC32__IEEE_X86_SSE42_PXMU[16] WUFFS_BASE__POTENTIALLY_UNUSED = { - 65, 6, 113, 219, 1, 0, 0, 0, - 65, 22, 1, 247, 1, 0, 0, 0, -}; - -// ---------------- Private Initializer Prototypes - -// ---------------- Private Function Prototypes - -static wuffs_base__empty_struct -wuffs_crc32__ieee_hasher__up( - wuffs_crc32__ieee_hasher* self, - wuffs_base__slice_u8 a_x); - -static wuffs_base__empty_struct -wuffs_crc32__ieee_hasher__up__choosy_default( - wuffs_crc32__ieee_hasher* self, - wuffs_base__slice_u8 a_x); - -#if defined(WUFFS_BASE__CPU_ARCH__ARM_CRC32) -static wuffs_base__empty_struct -wuffs_crc32__ieee_hasher__up_arm_crc32( - wuffs_crc32__ieee_hasher* self, - wuffs_base__slice_u8 a_x); -#endif // defined(WUFFS_BASE__CPU_ARCH__ARM_CRC32) - -#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) -static wuffs_base__empty_struct -wuffs_crc32__ieee_hasher__up_x86_avx2( - wuffs_crc32__ieee_hasher* self, - wuffs_base__slice_u8 a_x); -#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) - -#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) -static wuffs_base__empty_struct -wuffs_crc32__ieee_hasher__up_x86_sse42( - wuffs_crc32__ieee_hasher* self, - wuffs_base__slice_u8 a_x); -#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) - -// ---------------- VTables - -const wuffs_base__hasher_u32__func_ptrs -wuffs_crc32__ieee_hasher__func_ptrs_for__wuffs_base__hasher_u32 = { - (wuffs_base__status(*)(void*, - uint32_t, - uint64_t))(&wuffs_crc32__ieee_hasher__set_quirk), - (uint32_t(*)(void*, - wuffs_base__slice_u8))(&wuffs_crc32__ieee_hasher__update_u32), -}; - -// ---------------- Initializer Implementations - -wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT -wuffs_crc32__ieee_hasher__initialize( - wuffs_crc32__ieee_hasher* self, - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options){ - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (sizeof(*self) != sizeof_star_self) { - return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver); - } - if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) || - (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) { - return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version); - } - - if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) { - // The whole point of this if-check is to detect an uninitialized *self. - // We disable the warning on GCC. Clang-5.0 does not have this warning. -#if !defined(__clang__) && defined(__GNUC__) -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wmaybe-uninitialized" -#endif - if (self->private_impl.magic != 0) { - return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed); - } -#if !defined(__clang__) && defined(__GNUC__) -#pragma GCC diagnostic pop -#endif - } else { - if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) { - memset(self, 0, sizeof(*self)); - options |= WUFFS_INITIALIZE__ALREADY_ZEROED; - } else { - memset(&(self->private_impl), 0, sizeof(self->private_impl)); - } - } - - self->private_impl.choosy_up = &wuffs_crc32__ieee_hasher__up__choosy_default; - - self->private_impl.magic = WUFFS_BASE__MAGIC; - self->private_impl.vtable_for__wuffs_base__hasher_u32.vtable_name = - wuffs_base__hasher_u32__vtable_name; - self->private_impl.vtable_for__wuffs_base__hasher_u32.function_pointers = - (const void*)(&wuffs_crc32__ieee_hasher__func_ptrs_for__wuffs_base__hasher_u32); - return wuffs_base__make_status(NULL); -} - -wuffs_crc32__ieee_hasher* -wuffs_crc32__ieee_hasher__alloc() { - wuffs_crc32__ieee_hasher* x = - (wuffs_crc32__ieee_hasher*)(calloc(sizeof(wuffs_crc32__ieee_hasher), 1)); - if (!x) { - return NULL; - } - if (wuffs_crc32__ieee_hasher__initialize( - x, sizeof(wuffs_crc32__ieee_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) { - free(x); - return NULL; - } - return x; -} - -size_t -sizeof__wuffs_crc32__ieee_hasher() { - return sizeof(wuffs_crc32__ieee_hasher); -} - -// ---------------- Function Implementations - -// -------- func crc32.ieee_hasher.set_quirk - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_crc32__ieee_hasher__set_quirk( - wuffs_crc32__ieee_hasher* self, - uint32_t a_key, - uint64_t a_value) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - - return wuffs_base__make_status(wuffs_base__error__unsupported_option); -} - -// -------- func crc32.ieee_hasher.update_u32 - -WUFFS_BASE__MAYBE_STATIC uint32_t -wuffs_crc32__ieee_hasher__update_u32( - wuffs_crc32__ieee_hasher* self, - wuffs_base__slice_u8 a_x) { - if (!self) { - return 0; - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return 0; - } - - if (self->private_impl.f_state == 0) { - self->private_impl.choosy_up = ( -#if defined(WUFFS_BASE__CPU_ARCH__ARM_CRC32) - wuffs_base__cpu_arch__have_arm_crc32() ? &wuffs_crc32__ieee_hasher__up_arm_crc32 : -#endif -#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) - wuffs_base__cpu_arch__have_x86_avx2() ? &wuffs_crc32__ieee_hasher__up_x86_avx2 : -#endif -#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) - wuffs_base__cpu_arch__have_x86_sse42() ? &wuffs_crc32__ieee_hasher__up_x86_sse42 : -#endif - self->private_impl.choosy_up); - } - wuffs_crc32__ieee_hasher__up(self, a_x); - return self->private_impl.f_state; -} - -// -------- func crc32.ieee_hasher.up - -static wuffs_base__empty_struct -wuffs_crc32__ieee_hasher__up( - wuffs_crc32__ieee_hasher* self, - wuffs_base__slice_u8 a_x) { - return (*self->private_impl.choosy_up)(self, a_x); -} - -static wuffs_base__empty_struct -wuffs_crc32__ieee_hasher__up__choosy_default( - wuffs_crc32__ieee_hasher* self, - wuffs_base__slice_u8 a_x) { - uint32_t v_s = 0; - wuffs_base__slice_u8 v_p = {0}; - - v_s = (4294967295 ^ self->private_impl.f_state); - { - wuffs_base__slice_u8 i_slice_p = a_x; - v_p.ptr = i_slice_p.ptr; - v_p.len = 16; - uint8_t* i_end0_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 32) * 32); - while (v_p.ptr < i_end0_p) { - v_s ^= ((((uint32_t)(v_p.ptr[0])) << 0) | - (((uint32_t)(v_p.ptr[1])) << 8) | - (((uint32_t)(v_p.ptr[2])) << 16) | - (((uint32_t)(v_p.ptr[3])) << 24)); - v_s = (WUFFS_CRC32__IEEE_TABLE[0][v_p.ptr[15]] ^ - WUFFS_CRC32__IEEE_TABLE[1][v_p.ptr[14]] ^ - WUFFS_CRC32__IEEE_TABLE[2][v_p.ptr[13]] ^ - WUFFS_CRC32__IEEE_TABLE[3][v_p.ptr[12]] ^ - WUFFS_CRC32__IEEE_TABLE[4][v_p.ptr[11]] ^ - WUFFS_CRC32__IEEE_TABLE[5][v_p.ptr[10]] ^ - WUFFS_CRC32__IEEE_TABLE[6][v_p.ptr[9]] ^ - WUFFS_CRC32__IEEE_TABLE[7][v_p.ptr[8]] ^ - WUFFS_CRC32__IEEE_TABLE[8][v_p.ptr[7]] ^ - WUFFS_CRC32__IEEE_TABLE[9][v_p.ptr[6]] ^ - WUFFS_CRC32__IEEE_TABLE[10][v_p.ptr[5]] ^ - WUFFS_CRC32__IEEE_TABLE[11][v_p.ptr[4]] ^ - WUFFS_CRC32__IEEE_TABLE[12][(255 & (v_s >> 24))] ^ - WUFFS_CRC32__IEEE_TABLE[13][(255 & (v_s >> 16))] ^ - WUFFS_CRC32__IEEE_TABLE[14][(255 & (v_s >> 8))] ^ - WUFFS_CRC32__IEEE_TABLE[15][(255 & (v_s >> 0))]); - v_p.ptr += 16; - v_s ^= ((((uint32_t)(v_p.ptr[0])) << 0) | - (((uint32_t)(v_p.ptr[1])) << 8) | - (((uint32_t)(v_p.ptr[2])) << 16) | - (((uint32_t)(v_p.ptr[3])) << 24)); - v_s = (WUFFS_CRC32__IEEE_TABLE[0][v_p.ptr[15]] ^ - WUFFS_CRC32__IEEE_TABLE[1][v_p.ptr[14]] ^ - WUFFS_CRC32__IEEE_TABLE[2][v_p.ptr[13]] ^ - WUFFS_CRC32__IEEE_TABLE[3][v_p.ptr[12]] ^ - WUFFS_CRC32__IEEE_TABLE[4][v_p.ptr[11]] ^ - WUFFS_CRC32__IEEE_TABLE[5][v_p.ptr[10]] ^ - WUFFS_CRC32__IEEE_TABLE[6][v_p.ptr[9]] ^ - WUFFS_CRC32__IEEE_TABLE[7][v_p.ptr[8]] ^ - WUFFS_CRC32__IEEE_TABLE[8][v_p.ptr[7]] ^ - WUFFS_CRC32__IEEE_TABLE[9][v_p.ptr[6]] ^ - WUFFS_CRC32__IEEE_TABLE[10][v_p.ptr[5]] ^ - WUFFS_CRC32__IEEE_TABLE[11][v_p.ptr[4]] ^ - WUFFS_CRC32__IEEE_TABLE[12][(255 & (v_s >> 24))] ^ - WUFFS_CRC32__IEEE_TABLE[13][(255 & (v_s >> 16))] ^ - WUFFS_CRC32__IEEE_TABLE[14][(255 & (v_s >> 8))] ^ - WUFFS_CRC32__IEEE_TABLE[15][(255 & (v_s >> 0))]); - v_p.ptr += 16; - } - v_p.len = 16; - uint8_t* i_end1_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 16) * 16); - while (v_p.ptr < i_end1_p) { - v_s ^= ((((uint32_t)(v_p.ptr[0])) << 0) | - (((uint32_t)(v_p.ptr[1])) << 8) | - (((uint32_t)(v_p.ptr[2])) << 16) | - (((uint32_t)(v_p.ptr[3])) << 24)); - v_s = (WUFFS_CRC32__IEEE_TABLE[0][v_p.ptr[15]] ^ - WUFFS_CRC32__IEEE_TABLE[1][v_p.ptr[14]] ^ - WUFFS_CRC32__IEEE_TABLE[2][v_p.ptr[13]] ^ - WUFFS_CRC32__IEEE_TABLE[3][v_p.ptr[12]] ^ - WUFFS_CRC32__IEEE_TABLE[4][v_p.ptr[11]] ^ - WUFFS_CRC32__IEEE_TABLE[5][v_p.ptr[10]] ^ - WUFFS_CRC32__IEEE_TABLE[6][v_p.ptr[9]] ^ - WUFFS_CRC32__IEEE_TABLE[7][v_p.ptr[8]] ^ - WUFFS_CRC32__IEEE_TABLE[8][v_p.ptr[7]] ^ - WUFFS_CRC32__IEEE_TABLE[9][v_p.ptr[6]] ^ - WUFFS_CRC32__IEEE_TABLE[10][v_p.ptr[5]] ^ - WUFFS_CRC32__IEEE_TABLE[11][v_p.ptr[4]] ^ - WUFFS_CRC32__IEEE_TABLE[12][(255 & (v_s >> 24))] ^ - WUFFS_CRC32__IEEE_TABLE[13][(255 & (v_s >> 16))] ^ - WUFFS_CRC32__IEEE_TABLE[14][(255 & (v_s >> 8))] ^ - WUFFS_CRC32__IEEE_TABLE[15][(255 & (v_s >> 0))]); - v_p.ptr += 16; - } - v_p.len = 1; - uint8_t* i_end2_p = i_slice_p.ptr + i_slice_p.len; - while (v_p.ptr < i_end2_p) { - v_s = (WUFFS_CRC32__IEEE_TABLE[0][(((uint8_t)((v_s & 255))) ^ v_p.ptr[0])] ^ (v_s >> 8)); - v_p.ptr += 1; - } - v_p.len = 0; - } - self->private_impl.f_state = (4294967295 ^ v_s); - return wuffs_base__make_empty_struct(); -} - -// ‼ WUFFS MULTI-FILE SECTION +arm_crc32 -// -------- func crc32.ieee_hasher.up_arm_crc32 - -#if defined(WUFFS_BASE__CPU_ARCH__ARM_CRC32) -static wuffs_base__empty_struct -wuffs_crc32__ieee_hasher__up_arm_crc32( - wuffs_crc32__ieee_hasher* self, - wuffs_base__slice_u8 a_x) { - wuffs_base__slice_u8 v_p = {0}; - uint32_t v_s = 0; - - v_s = (4294967295 ^ self->private_impl.f_state); - while ((((uint64_t)(a_x.len)) > 0) && ((15 & ((uint32_t)(0xFFF & (uintptr_t)(a_x.ptr)))) != 0)) { - v_s = __crc32b(v_s, a_x.ptr[0]); - a_x = wuffs_base__slice_u8__subslice_i(a_x, 1); - } - { - wuffs_base__slice_u8 i_slice_p = a_x; - v_p.ptr = i_slice_p.ptr; - v_p.len = 8; - uint8_t* i_end0_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 128) * 128); - while (v_p.ptr < i_end0_p) { - v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr)); - v_p.ptr += 8; - v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr)); - v_p.ptr += 8; - v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr)); - v_p.ptr += 8; - v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr)); - v_p.ptr += 8; - v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr)); - v_p.ptr += 8; - v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr)); - v_p.ptr += 8; - v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr)); - v_p.ptr += 8; - v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr)); - v_p.ptr += 8; - v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr)); - v_p.ptr += 8; - v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr)); - v_p.ptr += 8; - v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr)); - v_p.ptr += 8; - v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr)); - v_p.ptr += 8; - v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr)); - v_p.ptr += 8; - v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr)); - v_p.ptr += 8; - v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr)); - v_p.ptr += 8; - v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr)); - v_p.ptr += 8; - } - v_p.len = 8; - uint8_t* i_end1_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 8) * 8); - while (v_p.ptr < i_end1_p) { - v_s = __crc32d(v_s, wuffs_base__peek_u64le__no_bounds_check(v_p.ptr)); - v_p.ptr += 8; - } - v_p.len = 1; - uint8_t* i_end2_p = i_slice_p.ptr + i_slice_p.len; - while (v_p.ptr < i_end2_p) { - v_s = __crc32b(v_s, v_p.ptr[0]); - v_p.ptr += 1; - } - v_p.len = 0; - } - self->private_impl.f_state = (4294967295 ^ v_s); - return wuffs_base__make_empty_struct(); -} -#endif // defined(WUFFS_BASE__CPU_ARCH__ARM_CRC32) -// ‼ WUFFS MULTI-FILE SECTION -arm_crc32 - -// ‼ WUFFS MULTI-FILE SECTION +x86_avx2 -// -------- func crc32.ieee_hasher.up_x86_avx2 - -#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) -WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2,avx2") -static wuffs_base__empty_struct -wuffs_crc32__ieee_hasher__up_x86_avx2( - wuffs_crc32__ieee_hasher* self, - wuffs_base__slice_u8 a_x) { - uint32_t v_s = 0; - wuffs_base__slice_u8 v_p = {0}; - __m128i v_k = {0}; - __m128i v_x0 = {0}; - __m128i v_x1 = {0}; - __m128i v_x2 = {0}; - __m128i v_x3 = {0}; - __m128i v_y0 = {0}; - __m128i v_y1 = {0}; - __m128i v_y2 = {0}; - __m128i v_y3 = {0}; - uint64_t v_tail_index = 0; - - v_s = (4294967295 ^ self->private_impl.f_state); - while ((((uint64_t)(a_x.len)) > 0) && ((15 & ((uint32_t)(0xFFF & (uintptr_t)(a_x.ptr)))) != 0)) { - v_s = (WUFFS_CRC32__IEEE_TABLE[0][(((uint8_t)((v_s & 255))) ^ a_x.ptr[0])] ^ (v_s >> 8)); - a_x = wuffs_base__slice_u8__subslice_i(a_x, 1); - } - if (((uint64_t)(a_x.len)) < 64) { - { - wuffs_base__slice_u8 i_slice_p = a_x; - v_p.ptr = i_slice_p.ptr; - v_p.len = 1; - uint8_t* i_end0_p = i_slice_p.ptr + i_slice_p.len; - while (v_p.ptr < i_end0_p) { - v_s = (WUFFS_CRC32__IEEE_TABLE[0][(((uint8_t)((v_s & 255))) ^ v_p.ptr[0])] ^ (v_s >> 8)); - v_p.ptr += 1; - } - v_p.len = 0; - } - self->private_impl.f_state = (4294967295 ^ v_s); - return wuffs_base__make_empty_struct(); - } - v_x0 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 0)); - v_x1 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 16)); - v_x2 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 32)); - v_x3 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 48)); - v_x0 = _mm_xor_si128(v_x0, _mm_cvtsi32_si128((int32_t)(v_s))); - v_k = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC32__IEEE_X86_SSE42_K1K2)); - { - wuffs_base__slice_u8 i_slice_p = wuffs_base__slice_u8__subslice_i(a_x, 64); - v_p.ptr = i_slice_p.ptr; - v_p.len = 64; - uint8_t* i_end0_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 64) * 64); - while (v_p.ptr < i_end0_p) { - v_y0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0)); - v_y1 = _mm_clmulepi64_si128(v_x1, v_k, (int32_t)(0)); - v_y2 = _mm_clmulepi64_si128(v_x2, v_k, (int32_t)(0)); - v_y3 = _mm_clmulepi64_si128(v_x3, v_k, (int32_t)(0)); - v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(17)); - v_x1 = _mm_clmulepi64_si128(v_x1, v_k, (int32_t)(17)); - v_x2 = _mm_clmulepi64_si128(v_x2, v_k, (int32_t)(17)); - v_x3 = _mm_clmulepi64_si128(v_x3, v_k, (int32_t)(17)); - v_x0 = _mm_xor_si128(_mm_xor_si128(v_x0, v_y0), _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr + 0))); - v_x1 = _mm_xor_si128(_mm_xor_si128(v_x1, v_y1), _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr + 16))); - v_x2 = _mm_xor_si128(_mm_xor_si128(v_x2, v_y2), _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr + 32))); - v_x3 = _mm_xor_si128(_mm_xor_si128(v_x3, v_y3), _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr + 48))); - v_p.ptr += 64; - } - v_p.len = 0; - } - v_k = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC32__IEEE_X86_SSE42_K3K4)); - v_y0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0)); - v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(17)); - v_x0 = _mm_xor_si128(v_x0, v_x1); - v_x0 = _mm_xor_si128(v_x0, v_y0); - v_y0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0)); - v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(17)); - v_x0 = _mm_xor_si128(v_x0, v_x2); - v_x0 = _mm_xor_si128(v_x0, v_y0); - v_y0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0)); - v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(17)); - v_x0 = _mm_xor_si128(v_x0, v_x3); - v_x0 = _mm_xor_si128(v_x0, v_y0); - v_x1 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(16)); - v_x2 = _mm_set_epi32((int32_t)(0), (int32_t)(4294967295), (int32_t)(0), (int32_t)(4294967295)); - v_x0 = _mm_srli_si128(v_x0, (int32_t)(8)); - v_x0 = _mm_xor_si128(v_x0, v_x1); - v_k = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC32__IEEE_X86_SSE42_K5ZZ)); - v_x1 = _mm_srli_si128(v_x0, (int32_t)(4)); - v_x0 = _mm_and_si128(v_x0, v_x2); - v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0)); - v_x0 = _mm_xor_si128(v_x0, v_x1); - v_k = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC32__IEEE_X86_SSE42_PXMU)); - v_x1 = _mm_and_si128(v_x0, v_x2); - v_x1 = _mm_clmulepi64_si128(v_x1, v_k, (int32_t)(16)); - v_x1 = _mm_and_si128(v_x1, v_x2); - v_x1 = _mm_clmulepi64_si128(v_x1, v_k, (int32_t)(0)); - v_x0 = _mm_xor_si128(v_x0, v_x1); - v_s = ((uint32_t)(_mm_extract_epi32(v_x0, (int32_t)(1)))); - v_tail_index = (((uint64_t)(a_x.len)) & 18446744073709551552u); - if (v_tail_index < ((uint64_t)(a_x.len))) { - { - wuffs_base__slice_u8 i_slice_p = wuffs_base__slice_u8__subslice_i(a_x, v_tail_index); - v_p.ptr = i_slice_p.ptr; - v_p.len = 1; - uint8_t* i_end0_p = i_slice_p.ptr + i_slice_p.len; - while (v_p.ptr < i_end0_p) { - v_s = (WUFFS_CRC32__IEEE_TABLE[0][(((uint8_t)((v_s & 255))) ^ v_p.ptr[0])] ^ (v_s >> 8)); - v_p.ptr += 1; - } - v_p.len = 0; - } - } - self->private_impl.f_state = (4294967295 ^ v_s); - return wuffs_base__make_empty_struct(); -} -#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) -// ‼ WUFFS MULTI-FILE SECTION -x86_avx2 - -// ‼ WUFFS MULTI-FILE SECTION +x86_sse42 -// -------- func crc32.ieee_hasher.up_x86_sse42 - -#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) -WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2") -static wuffs_base__empty_struct -wuffs_crc32__ieee_hasher__up_x86_sse42( - wuffs_crc32__ieee_hasher* self, - wuffs_base__slice_u8 a_x) { - uint32_t v_s = 0; - wuffs_base__slice_u8 v_p = {0}; - __m128i v_k = {0}; - __m128i v_x0 = {0}; - __m128i v_x1 = {0}; - __m128i v_x2 = {0}; - __m128i v_x3 = {0}; - __m128i v_y0 = {0}; - __m128i v_y1 = {0}; - __m128i v_y2 = {0}; - __m128i v_y3 = {0}; - uint64_t v_tail_index = 0; - - v_s = (4294967295 ^ self->private_impl.f_state); - while ((((uint64_t)(a_x.len)) > 0) && ((15 & ((uint32_t)(0xFFF & (uintptr_t)(a_x.ptr)))) != 0)) { - v_s = (WUFFS_CRC32__IEEE_TABLE[0][(((uint8_t)((v_s & 255))) ^ a_x.ptr[0])] ^ (v_s >> 8)); - a_x = wuffs_base__slice_u8__subslice_i(a_x, 1); - } - if (((uint64_t)(a_x.len)) < 64) { - { - wuffs_base__slice_u8 i_slice_p = a_x; - v_p.ptr = i_slice_p.ptr; - v_p.len = 1; - uint8_t* i_end0_p = i_slice_p.ptr + i_slice_p.len; - while (v_p.ptr < i_end0_p) { - v_s = (WUFFS_CRC32__IEEE_TABLE[0][(((uint8_t)((v_s & 255))) ^ v_p.ptr[0])] ^ (v_s >> 8)); - v_p.ptr += 1; - } - v_p.len = 0; - } - self->private_impl.f_state = (4294967295 ^ v_s); - return wuffs_base__make_empty_struct(); - } - v_x0 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 0)); - v_x1 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 16)); - v_x2 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 32)); - v_x3 = _mm_lddqu_si128((const __m128i*)(const void*)(a_x.ptr + 48)); - v_x0 = _mm_xor_si128(v_x0, _mm_cvtsi32_si128((int32_t)(v_s))); - v_k = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC32__IEEE_X86_SSE42_K1K2)); - { - wuffs_base__slice_u8 i_slice_p = wuffs_base__slice_u8__subslice_i(a_x, 64); - v_p.ptr = i_slice_p.ptr; - v_p.len = 64; - uint8_t* i_end0_p = v_p.ptr + (((i_slice_p.len - (size_t)(v_p.ptr - i_slice_p.ptr)) / 64) * 64); - while (v_p.ptr < i_end0_p) { - v_y0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0)); - v_y1 = _mm_clmulepi64_si128(v_x1, v_k, (int32_t)(0)); - v_y2 = _mm_clmulepi64_si128(v_x2, v_k, (int32_t)(0)); - v_y3 = _mm_clmulepi64_si128(v_x3, v_k, (int32_t)(0)); - v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(17)); - v_x1 = _mm_clmulepi64_si128(v_x1, v_k, (int32_t)(17)); - v_x2 = _mm_clmulepi64_si128(v_x2, v_k, (int32_t)(17)); - v_x3 = _mm_clmulepi64_si128(v_x3, v_k, (int32_t)(17)); - v_x0 = _mm_xor_si128(_mm_xor_si128(v_x0, v_y0), _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr + 0))); - v_x1 = _mm_xor_si128(_mm_xor_si128(v_x1, v_y1), _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr + 16))); - v_x2 = _mm_xor_si128(_mm_xor_si128(v_x2, v_y2), _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr + 32))); - v_x3 = _mm_xor_si128(_mm_xor_si128(v_x3, v_y3), _mm_lddqu_si128((const __m128i*)(const void*)(v_p.ptr + 48))); - v_p.ptr += 64; - } - v_p.len = 0; - } - v_k = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC32__IEEE_X86_SSE42_K3K4)); - v_y0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0)); - v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(17)); - v_x0 = _mm_xor_si128(v_x0, v_x1); - v_x0 = _mm_xor_si128(v_x0, v_y0); - v_y0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0)); - v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(17)); - v_x0 = _mm_xor_si128(v_x0, v_x2); - v_x0 = _mm_xor_si128(v_x0, v_y0); - v_y0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0)); - v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(17)); - v_x0 = _mm_xor_si128(v_x0, v_x3); - v_x0 = _mm_xor_si128(v_x0, v_y0); - v_x1 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(16)); - v_x2 = _mm_set_epi32((int32_t)(0), (int32_t)(4294967295), (int32_t)(0), (int32_t)(4294967295)); - v_x0 = _mm_srli_si128(v_x0, (int32_t)(8)); - v_x0 = _mm_xor_si128(v_x0, v_x1); - v_k = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC32__IEEE_X86_SSE42_K5ZZ)); - v_x1 = _mm_srli_si128(v_x0, (int32_t)(4)); - v_x0 = _mm_and_si128(v_x0, v_x2); - v_x0 = _mm_clmulepi64_si128(v_x0, v_k, (int32_t)(0)); - v_x0 = _mm_xor_si128(v_x0, v_x1); - v_k = _mm_lddqu_si128((const __m128i*)(const void*)(WUFFS_CRC32__IEEE_X86_SSE42_PXMU)); - v_x1 = _mm_and_si128(v_x0, v_x2); - v_x1 = _mm_clmulepi64_si128(v_x1, v_k, (int32_t)(16)); - v_x1 = _mm_and_si128(v_x1, v_x2); - v_x1 = _mm_clmulepi64_si128(v_x1, v_k, (int32_t)(0)); - v_x0 = _mm_xor_si128(v_x0, v_x1); - v_s = ((uint32_t)(_mm_extract_epi32(v_x0, (int32_t)(1)))); - v_tail_index = (((uint64_t)(a_x.len)) & 18446744073709551552u); - if (v_tail_index < ((uint64_t)(a_x.len))) { - { - wuffs_base__slice_u8 i_slice_p = wuffs_base__slice_u8__subslice_i(a_x, v_tail_index); - v_p.ptr = i_slice_p.ptr; - v_p.len = 1; - uint8_t* i_end0_p = i_slice_p.ptr + i_slice_p.len; - while (v_p.ptr < i_end0_p) { - v_s = (WUFFS_CRC32__IEEE_TABLE[0][(((uint8_t)((v_s & 255))) ^ v_p.ptr[0])] ^ (v_s >> 8)); - v_p.ptr += 1; - } - v_p.len = 0; - } - } - self->private_impl.f_state = (4294967295 ^ v_s); - return wuffs_base__make_empty_struct(); -} -#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) -// ‼ WUFFS MULTI-FILE SECTION -x86_sse42 - -#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__CRC32) - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__DEFLATE) - -// ---------------- Status Codes Implementations - -const char wuffs_deflate__error__bad_huffman_code_over_subscribed[] = "#deflate: bad Huffman code (over-subscribed)"; -const char wuffs_deflate__error__bad_huffman_code_under_subscribed[] = "#deflate: bad Huffman code (under-subscribed)"; -const char wuffs_deflate__error__bad_huffman_code_length_count[] = "#deflate: bad Huffman code length count"; -const char wuffs_deflate__error__bad_huffman_code_length_repetition[] = "#deflate: bad Huffman code length repetition"; -const char wuffs_deflate__error__bad_huffman_code[] = "#deflate: bad Huffman code"; -const char wuffs_deflate__error__bad_huffman_minimum_code_length[] = "#deflate: bad Huffman minimum code length"; -const char wuffs_deflate__error__bad_block[] = "#deflate: bad block"; -const char wuffs_deflate__error__bad_distance[] = "#deflate: bad distance"; -const char wuffs_deflate__error__bad_distance_code_count[] = "#deflate: bad distance code count"; -const char wuffs_deflate__error__bad_literal_length_code_count[] = "#deflate: bad literal/length code count"; -const char wuffs_deflate__error__inconsistent_stored_block_length[] = "#deflate: inconsistent stored block length"; -const char wuffs_deflate__error__missing_end_of_block_code[] = "#deflate: missing end-of-block code"; -const char wuffs_deflate__error__no_huffman_codes[] = "#deflate: no Huffman codes"; -const char wuffs_deflate__error__truncated_input[] = "#deflate: truncated input"; -const char wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state[] = "#deflate: internal error: inconsistent Huffman decoder state"; -const char wuffs_deflate__error__internal_error_inconsistent_i_o[] = "#deflate: internal error: inconsistent I/O"; -const char wuffs_deflate__error__internal_error_inconsistent_distance[] = "#deflate: internal error: inconsistent distance"; -const char wuffs_deflate__error__internal_error_inconsistent_n_bits[] = "#deflate: internal error: inconsistent n_bits"; - -// ---------------- Private Consts - -static const uint8_t -WUFFS_DEFLATE__CODE_ORDER[19] WUFFS_BASE__POTENTIALLY_UNUSED = { - 16, 17, 18, 0, 8, 7, 9, 6, - 10, 5, 11, 4, 12, 3, 13, 2, - 14, 1, 15, -}; - -static const uint8_t -WUFFS_DEFLATE__REVERSE8[256] WUFFS_BASE__POTENTIALLY_UNUSED = { - 0, 128, 64, 192, 32, 160, 96, 224, - 16, 144, 80, 208, 48, 176, 112, 240, - 8, 136, 72, 200, 40, 168, 104, 232, - 24, 152, 88, 216, 56, 184, 120, 248, - 4, 132, 68, 196, 36, 164, 100, 228, - 20, 148, 84, 212, 52, 180, 116, 244, - 12, 140, 76, 204, 44, 172, 108, 236, - 28, 156, 92, 220, 60, 188, 124, 252, - 2, 130, 66, 194, 34, 162, 98, 226, - 18, 146, 82, 210, 50, 178, 114, 242, - 10, 138, 74, 202, 42, 170, 106, 234, - 26, 154, 90, 218, 58, 186, 122, 250, - 6, 134, 70, 198, 38, 166, 102, 230, - 22, 150, 86, 214, 54, 182, 118, 246, - 14, 142, 78, 206, 46, 174, 110, 238, - 30, 158, 94, 222, 62, 190, 126, 254, - 1, 129, 65, 193, 33, 161, 97, 225, - 17, 145, 81, 209, 49, 177, 113, 241, - 9, 137, 73, 201, 41, 169, 105, 233, - 25, 153, 89, 217, 57, 185, 121, 249, - 5, 133, 69, 197, 37, 165, 101, 229, - 21, 149, 85, 213, 53, 181, 117, 245, - 13, 141, 77, 205, 45, 173, 109, 237, - 29, 157, 93, 221, 61, 189, 125, 253, - 3, 131, 67, 195, 35, 163, 99, 227, - 19, 147, 83, 211, 51, 179, 115, 243, - 11, 139, 75, 203, 43, 171, 107, 235, - 27, 155, 91, 219, 59, 187, 123, 251, - 7, 135, 71, 199, 39, 167, 103, 231, - 23, 151, 87, 215, 55, 183, 119, 247, - 15, 143, 79, 207, 47, 175, 111, 239, - 31, 159, 95, 223, 63, 191, 127, 255, -}; - -static const uint32_t -WUFFS_DEFLATE__LCODE_MAGIC_NUMBERS[32] WUFFS_BASE__POTENTIALLY_UNUSED = { - 1073741824, 1073742080, 1073742336, 1073742592, 1073742848, 1073743104, 1073743360, 1073743616, - 1073743888, 1073744400, 1073744912, 1073745424, 1073745952, 1073746976, 1073748000, 1073749024, - 1073750064, 1073752112, 1073754160, 1073756208, 1073758272, 1073762368, 1073766464, 1073770560, - 1073774672, 1073782864, 1073791056, 1073799248, 1073807104, 134217728, 134217728, 134217728, -}; - -static const uint32_t -WUFFS_DEFLATE__DCODE_MAGIC_NUMBERS[32] WUFFS_BASE__POTENTIALLY_UNUSED = { - 1073741824, 1073742080, 1073742336, 1073742592, 1073742864, 1073743376, 1073743904, 1073744928, - 1073745968, 1073748016, 1073750080, 1073754176, 1073758288, 1073766480, 1073774688, 1073791072, - 1073807472, 1073840240, 1073873024, 1073938560, 1074004112, 1074135184, 1074266272, 1074528416, - 1074790576, 1075314864, 1075839168, 1076887744, 1077936336, 1080033488, 134217728, 134217728, -}; - -#define WUFFS_DEFLATE__HUFFS_TABLE_SIZE 1024 - -#define WUFFS_DEFLATE__HUFFS_TABLE_MASK 1023 - -// ---------------- Private Initializer Prototypes - -// ---------------- Private Function Prototypes - -static wuffs_base__status -wuffs_deflate__decoder__do_transform_io( - wuffs_deflate__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__slice_u8 a_workbuf); - -static wuffs_base__status -wuffs_deflate__decoder__decode_blocks( - wuffs_deflate__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_deflate__decoder__decode_uncompressed( - wuffs_deflate__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_deflate__decoder__init_fixed_huffman( - wuffs_deflate__decoder* self); - -static wuffs_base__status -wuffs_deflate__decoder__init_dynamic_huffman( - wuffs_deflate__decoder* self, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_deflate__decoder__init_huff( - wuffs_deflate__decoder* self, - uint32_t a_which, - uint32_t a_n_codes0, - uint32_t a_n_codes1, - uint32_t a_base_symbol); - -#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) -static wuffs_base__status -wuffs_deflate__decoder__decode_huffman_bmi2( - wuffs_deflate__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__io_buffer* a_src); -#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) - -static wuffs_base__status -wuffs_deflate__decoder__decode_huffman_fast32( - wuffs_deflate__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_deflate__decoder__decode_huffman_fast64( - wuffs_deflate__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_deflate__decoder__decode_huffman_fast64__choosy_default( - wuffs_deflate__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_deflate__decoder__decode_huffman_slow( - wuffs_deflate__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__io_buffer* a_src); - -// ---------------- VTables - -const wuffs_base__io_transformer__func_ptrs -wuffs_deflate__decoder__func_ptrs_for__wuffs_base__io_transformer = { - (wuffs_base__status(*)(void*, - uint32_t, - uint64_t))(&wuffs_deflate__decoder__set_quirk), - (wuffs_base__status(*)(void*, - wuffs_base__io_buffer*, - wuffs_base__io_buffer*, - wuffs_base__slice_u8))(&wuffs_deflate__decoder__transform_io), - (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_deflate__decoder__workbuf_len), -}; - -// ---------------- Initializer Implementations - -wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT -wuffs_deflate__decoder__initialize( - wuffs_deflate__decoder* self, - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options){ - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (sizeof(*self) != sizeof_star_self) { - return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver); - } - if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) || - (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) { - return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version); - } - - if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) { - // The whole point of this if-check is to detect an uninitialized *self. - // We disable the warning on GCC. Clang-5.0 does not have this warning. -#if !defined(__clang__) && defined(__GNUC__) -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wmaybe-uninitialized" -#endif - if (self->private_impl.magic != 0) { - return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed); - } -#if !defined(__clang__) && defined(__GNUC__) -#pragma GCC diagnostic pop -#endif - } else { - if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) { - memset(self, 0, sizeof(*self)); - options |= WUFFS_INITIALIZE__ALREADY_ZEROED; - } else { - memset(&(self->private_impl), 0, sizeof(self->private_impl)); - } - } - - self->private_impl.choosy_decode_huffman_fast64 = &wuffs_deflate__decoder__decode_huffman_fast64__choosy_default; - - self->private_impl.magic = WUFFS_BASE__MAGIC; - self->private_impl.vtable_for__wuffs_base__io_transformer.vtable_name = - wuffs_base__io_transformer__vtable_name; - self->private_impl.vtable_for__wuffs_base__io_transformer.function_pointers = - (const void*)(&wuffs_deflate__decoder__func_ptrs_for__wuffs_base__io_transformer); - return wuffs_base__make_status(NULL); -} - -wuffs_deflate__decoder* -wuffs_deflate__decoder__alloc() { - wuffs_deflate__decoder* x = - (wuffs_deflate__decoder*)(calloc(sizeof(wuffs_deflate__decoder), 1)); - if (!x) { - return NULL; - } - if (wuffs_deflate__decoder__initialize( - x, sizeof(wuffs_deflate__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) { - free(x); - return NULL; - } - return x; -} - -size_t -sizeof__wuffs_deflate__decoder() { - return sizeof(wuffs_deflate__decoder); -} - -// ---------------- Function Implementations - -// -------- func deflate.decoder.add_history - -WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct -wuffs_deflate__decoder__add_history( - wuffs_deflate__decoder* self, - wuffs_base__slice_u8 a_hist) { - if (!self) { - return wuffs_base__make_empty_struct(); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_empty_struct(); - } - - wuffs_base__slice_u8 v_s = {0}; - uint64_t v_n_copied = 0; - uint32_t v_already_full = 0; - - v_s = a_hist; - if (((uint64_t)(v_s.len)) >= 32768) { - v_s = wuffs_base__slice_u8__suffix(v_s, 32768); - wuffs_base__slice_u8__copy_from_slice(wuffs_base__make_slice_u8(self->private_data.f_history, 32768), v_s); - self->private_impl.f_history_index = 32768; - } else { - v_n_copied = wuffs_base__slice_u8__copy_from_slice(wuffs_base__make_slice_u8_ij(self->private_data.f_history, (self->private_impl.f_history_index & 32767), 32768), v_s); - if (v_n_copied < ((uint64_t)(v_s.len))) { - v_s = wuffs_base__slice_u8__subslice_i(v_s, v_n_copied); - v_n_copied = wuffs_base__slice_u8__copy_from_slice(wuffs_base__make_slice_u8(self->private_data.f_history, 32768), v_s); - self->private_impl.f_history_index = (((uint32_t)((v_n_copied & 32767))) + 32768); - } else { - v_already_full = 0; - if (self->private_impl.f_history_index >= 32768) { - v_already_full = 32768; - } - self->private_impl.f_history_index = ((self->private_impl.f_history_index & 32767) + ((uint32_t)((v_n_copied & 32767))) + v_already_full); - } - } - wuffs_base__slice_u8__copy_from_slice(wuffs_base__make_slice_u8_ij(self->private_data.f_history, 32768, 33025), wuffs_base__make_slice_u8(self->private_data.f_history, 33025)); - return wuffs_base__make_empty_struct(); -} - -// -------- func deflate.decoder.set_quirk - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_deflate__decoder__set_quirk( - wuffs_deflate__decoder* self, - uint32_t a_key, - uint64_t a_value) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - - return wuffs_base__make_status(wuffs_base__error__unsupported_option); -} - -// -------- func deflate.decoder.workbuf_len - -WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 -wuffs_deflate__decoder__workbuf_len( - const wuffs_deflate__decoder* self) { - if (!self) { - return wuffs_base__utility__empty_range_ii_u64(); - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return wuffs_base__utility__empty_range_ii_u64(); - } - - return wuffs_base__utility__make_range_ii_u64(1, 1); -} - -// -------- func deflate.decoder.transform_io - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_deflate__decoder__transform_io( - wuffs_deflate__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__slice_u8 a_workbuf) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - if (!a_dst || !a_src) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - if ((self->private_impl.active_coroutine != 0) && - (self->private_impl.active_coroutine != 1)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); - } - self->private_impl.active_coroutine = 0; - wuffs_base__status status = wuffs_base__make_status(NULL); - - wuffs_base__status v_status = wuffs_base__make_status(NULL); - - uint32_t coro_susp_point = self->private_impl.p_transform_io[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - while (true) { - { - wuffs_base__status t_0 = wuffs_deflate__decoder__do_transform_io(self, a_dst, a_src, a_workbuf); - v_status = t_0; - } - if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { - status = wuffs_base__make_status(wuffs_deflate__error__truncated_input); - goto exit; - } - status = v_status; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); - } - - ok: - self->private_impl.p_transform_io[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_transform_io[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0; - - goto exit; - exit: - if (wuffs_base__status__is_error(&status)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - } - return status; -} - -// -------- func deflate.decoder.do_transform_io - -static wuffs_base__status -wuffs_deflate__decoder__do_transform_io( - wuffs_deflate__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__slice_u8 a_workbuf) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint64_t v_mark = 0; - wuffs_base__status v_status = wuffs_base__make_status(NULL); - - uint8_t* iop_a_dst = NULL; - uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_dst && a_dst->data.ptr) { - io0_a_dst = a_dst->data.ptr; - io1_a_dst = io0_a_dst + a_dst->meta.wi; - iop_a_dst = io1_a_dst; - io2_a_dst = io0_a_dst + a_dst->data.len; - if (a_dst->meta.closed) { - io2_a_dst = iop_a_dst; - } - } - - uint32_t coro_susp_point = self->private_impl.p_do_transform_io[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - self->private_impl.choosy_decode_huffman_fast64 = ( -#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) - wuffs_base__cpu_arch__have_x86_bmi2() ? &wuffs_deflate__decoder__decode_huffman_bmi2 : -#endif - self->private_impl.choosy_decode_huffman_fast64); - while (true) { - v_mark = ((uint64_t)(iop_a_dst - io0_a_dst)); - { - if (a_dst) { - a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); - } - wuffs_base__status t_0 = wuffs_deflate__decoder__decode_blocks(self, a_dst, a_src); - v_status = t_0; - if (a_dst) { - iop_a_dst = a_dst->data.ptr + a_dst->meta.wi; - } - } - if ( ! wuffs_base__status__is_suspension(&v_status)) { - status = v_status; - if (wuffs_base__status__is_error(&status)) { - goto exit; - } else if (wuffs_base__status__is_suspension(&status)) { - status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension); - goto exit; - } - goto ok; - } - wuffs_base__u64__sat_add_indirect(&self->private_impl.f_transformed_history_count, wuffs_base__io__count_since(v_mark, ((uint64_t)(iop_a_dst - io0_a_dst)))); - wuffs_deflate__decoder__add_history(self, wuffs_base__io__since(v_mark, ((uint64_t)(iop_a_dst - io0_a_dst)), io0_a_dst)); - status = v_status; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); - } - - ok: - self->private_impl.p_do_transform_io[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_do_transform_io[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - - goto exit; - exit: - if (a_dst && a_dst->data.ptr) { - a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); - } - - return status; -} - -// -------- func deflate.decoder.decode_blocks - -static wuffs_base__status -wuffs_deflate__decoder__decode_blocks( - wuffs_deflate__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint32_t v_final = 0; - uint32_t v_b0 = 0; - uint32_t v_type = 0; - wuffs_base__status v_status = wuffs_base__make_status(NULL); - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_decode_blocks[0]; - if (coro_susp_point) { - v_final = self->private_data.s_decode_blocks[0].v_final; - } - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - label__outer__continue:; - while (v_final == 0) { - while (self->private_impl.f_n_bits < 3) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint32_t t_0 = *iop_a_src++; - v_b0 = t_0; - } - self->private_impl.f_bits |= (v_b0 << (self->private_impl.f_n_bits & 3)); - self->private_impl.f_n_bits = ((self->private_impl.f_n_bits & 3) + 8); - } - v_final = (self->private_impl.f_bits & 1); - v_type = ((self->private_impl.f_bits >> 1) & 3); - self->private_impl.f_bits >>= 3; - self->private_impl.f_n_bits -= 3; - if (v_type == 0) { - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - status = wuffs_deflate__decoder__decode_uncompressed(self, a_dst, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - goto label__outer__continue; - } else if (v_type == 1) { - v_status = wuffs_deflate__decoder__init_fixed_huffman(self); - if ( ! wuffs_base__status__is_ok(&v_status)) { - status = v_status; - if (wuffs_base__status__is_error(&status)) { - goto exit; - } else if (wuffs_base__status__is_suspension(&status)) { - status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension); - goto exit; - } - goto ok; - } - } else if (v_type == 2) { - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); - status = wuffs_deflate__decoder__init_dynamic_huffman(self, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - } else { - status = wuffs_base__make_status(wuffs_deflate__error__bad_block); - goto exit; - } - self->private_impl.f_end_of_block = false; - while (true) { - if (sizeof(void*) == 4) { - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - v_status = wuffs_deflate__decoder__decode_huffman_fast32(self, a_dst, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - } else { - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - v_status = wuffs_deflate__decoder__decode_huffman_fast64(self, a_dst, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - } - if (wuffs_base__status__is_error(&v_status)) { - status = v_status; - goto exit; - } - if (self->private_impl.f_end_of_block) { - goto label__outer__continue; - } - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); - status = wuffs_deflate__decoder__decode_huffman_slow(self, a_dst, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - if (self->private_impl.f_end_of_block) { - goto label__outer__continue; - } - } - } - - ok: - self->private_impl.p_decode_blocks[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_blocks[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_data.s_decode_blocks[0].v_final = v_final; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func deflate.decoder.decode_uncompressed - -static wuffs_base__status -wuffs_deflate__decoder__decode_uncompressed( - wuffs_deflate__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint32_t v_length = 0; - uint32_t v_n_copied = 0; - - uint8_t* iop_a_dst = NULL; - uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_dst && a_dst->data.ptr) { - io0_a_dst = a_dst->data.ptr; - io1_a_dst = io0_a_dst + a_dst->meta.wi; - iop_a_dst = io1_a_dst; - io2_a_dst = io0_a_dst + a_dst->data.len; - if (a_dst->meta.closed) { - io2_a_dst = iop_a_dst; - } - } - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_decode_uncompressed[0]; - if (coro_susp_point) { - v_length = self->private_data.s_decode_uncompressed[0].v_length; - } - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - if ((self->private_impl.f_n_bits >= 8) || ((self->private_impl.f_bits >> (self->private_impl.f_n_bits & 7)) != 0)) { - status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits); - goto exit; - } - self->private_impl.f_n_bits = 0; - self->private_impl.f_bits = 0; - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - uint32_t t_0; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_0 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); - iop_a_src += 4; - } else { - self->private_data.s_decode_uncompressed[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_decode_uncompressed[0].scratch; - uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0; - if (num_bits_0 == 24) { - t_0 = ((uint32_t)(*scratch)); - break; - } - num_bits_0 += 8; - *scratch |= ((uint64_t)(num_bits_0)) << 56; - } - } - v_length = t_0; - } - if ((((v_length) & 0xFFFF) + ((v_length) >> (32 - (16)))) != 65535) { - status = wuffs_base__make_status(wuffs_deflate__error__inconsistent_stored_block_length); - goto exit; - } - v_length = ((v_length) & 0xFFFF); - while (true) { - v_n_copied = wuffs_base__io_writer__limited_copy_u32_from_reader( - &iop_a_dst, io2_a_dst,v_length, &iop_a_src, io2_a_src); - if (v_length <= v_n_copied) { - status = wuffs_base__make_status(NULL); - goto ok; - } - v_length -= v_n_copied; - if (((uint64_t)(io2_a_dst - iop_a_dst)) == 0) { - status = wuffs_base__make_status(wuffs_base__suspension__short_write); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3); - } else { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4); - } - } - - ok: - self->private_impl.p_decode_uncompressed[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_uncompressed[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_data.s_decode_uncompressed[0].v_length = v_length; - - goto exit; - exit: - if (a_dst && a_dst->data.ptr) { - a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); - } - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func deflate.decoder.init_fixed_huffman - -static wuffs_base__status -wuffs_deflate__decoder__init_fixed_huffman( - wuffs_deflate__decoder* self) { - uint32_t v_i = 0; - wuffs_base__status v_status = wuffs_base__make_status(NULL); - - while (v_i < 144) { - self->private_data.f_code_lengths[v_i] = 8; - v_i += 1; - } - while (v_i < 256) { - self->private_data.f_code_lengths[v_i] = 9; - v_i += 1; - } - while (v_i < 280) { - self->private_data.f_code_lengths[v_i] = 7; - v_i += 1; - } - while (v_i < 288) { - self->private_data.f_code_lengths[v_i] = 8; - v_i += 1; - } - while (v_i < 320) { - self->private_data.f_code_lengths[v_i] = 5; - v_i += 1; - } - v_status = wuffs_deflate__decoder__init_huff(self, - 0, - 0, - 288, - 257); - if (wuffs_base__status__is_error(&v_status)) { - return v_status; - } - v_status = wuffs_deflate__decoder__init_huff(self, - 1, - 288, - 320, - 0); - if (wuffs_base__status__is_error(&v_status)) { - return v_status; - } - return wuffs_base__make_status(NULL); -} - -// -------- func deflate.decoder.init_dynamic_huffman - -static wuffs_base__status -wuffs_deflate__decoder__init_dynamic_huffman( - wuffs_deflate__decoder* self, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint32_t v_bits = 0; - uint32_t v_n_bits = 0; - uint32_t v_b0 = 0; - uint32_t v_n_lit = 0; - uint32_t v_n_dist = 0; - uint32_t v_n_clen = 0; - uint32_t v_i = 0; - uint32_t v_b1 = 0; - wuffs_base__status v_status = wuffs_base__make_status(NULL); - uint32_t v_mask = 0; - uint32_t v_table_entry = 0; - uint32_t v_table_entry_n_bits = 0; - uint32_t v_b2 = 0; - uint32_t v_n_extra_bits = 0; - uint8_t v_rep_symbol = 0; - uint32_t v_rep_count = 0; - uint32_t v_b3 = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_init_dynamic_huffman[0]; - if (coro_susp_point) { - v_bits = self->private_data.s_init_dynamic_huffman[0].v_bits; - v_n_bits = self->private_data.s_init_dynamic_huffman[0].v_n_bits; - v_n_lit = self->private_data.s_init_dynamic_huffman[0].v_n_lit; - v_n_dist = self->private_data.s_init_dynamic_huffman[0].v_n_dist; - v_n_clen = self->private_data.s_init_dynamic_huffman[0].v_n_clen; - v_i = self->private_data.s_init_dynamic_huffman[0].v_i; - v_mask = self->private_data.s_init_dynamic_huffman[0].v_mask; - v_n_extra_bits = self->private_data.s_init_dynamic_huffman[0].v_n_extra_bits; - v_rep_symbol = self->private_data.s_init_dynamic_huffman[0].v_rep_symbol; - v_rep_count = self->private_data.s_init_dynamic_huffman[0].v_rep_count; - } - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - v_bits = self->private_impl.f_bits; - v_n_bits = self->private_impl.f_n_bits; - while (v_n_bits < 14) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint32_t t_0 = *iop_a_src++; - v_b0 = t_0; - } - v_bits |= (v_b0 << v_n_bits); - v_n_bits += 8; - } - v_n_lit = (((v_bits) & 0x1F) + 257); - if (v_n_lit > 286) { - status = wuffs_base__make_status(wuffs_deflate__error__bad_literal_length_code_count); - goto exit; - } - v_bits >>= 5; - v_n_dist = (((v_bits) & 0x1F) + 1); - if (v_n_dist > 30) { - status = wuffs_base__make_status(wuffs_deflate__error__bad_distance_code_count); - goto exit; - } - v_bits >>= 5; - v_n_clen = (((v_bits) & 0xF) + 4); - v_bits >>= 4; - v_n_bits -= 14; - v_i = 0; - while (v_i < v_n_clen) { - while (v_n_bits < 3) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint32_t t_1 = *iop_a_src++; - v_b1 = t_1; - } - v_bits |= (v_b1 << v_n_bits); - v_n_bits += 8; - } - self->private_data.f_code_lengths[WUFFS_DEFLATE__CODE_ORDER[v_i]] = ((uint8_t)((v_bits & 7))); - v_bits >>= 3; - v_n_bits -= 3; - v_i += 1; - } - while (v_i < 19) { - self->private_data.f_code_lengths[WUFFS_DEFLATE__CODE_ORDER[v_i]] = 0; - v_i += 1; - } - v_status = wuffs_deflate__decoder__init_huff(self, - 0, - 0, - 19, - 4095); - if (wuffs_base__status__is_error(&v_status)) { - status = v_status; - goto exit; - } - v_mask = ((((uint32_t)(1)) << self->private_impl.f_n_huffs_bits[0]) - 1); - v_i = 0; - label__0__continue:; - while (v_i < (v_n_lit + v_n_dist)) { - while (true) { - v_table_entry = self->private_data.f_huffs[0][(v_bits & v_mask)]; - v_table_entry_n_bits = (v_table_entry & 15); - if (v_n_bits >= v_table_entry_n_bits) { - v_bits >>= v_table_entry_n_bits; - v_n_bits -= v_table_entry_n_bits; - goto label__1__break; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint32_t t_2 = *iop_a_src++; - v_b2 = t_2; - } - v_bits |= (v_b2 << v_n_bits); - v_n_bits += 8; - } - label__1__break:; - if ((v_table_entry >> 24) != 128) { - status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); - goto exit; - } - v_table_entry = ((v_table_entry >> 8) & 255); - if (v_table_entry < 16) { - self->private_data.f_code_lengths[v_i] = ((uint8_t)(v_table_entry)); - v_i += 1; - goto label__0__continue; - } - v_n_extra_bits = 0; - v_rep_symbol = 0; - v_rep_count = 0; - if (v_table_entry == 16) { - v_n_extra_bits = 2; - if (v_i <= 0) { - status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code_length_repetition); - goto exit; - } - v_rep_symbol = (self->private_data.f_code_lengths[(v_i - 1)] & 15); - v_rep_count = 3; - } else if (v_table_entry == 17) { - v_n_extra_bits = 3; - v_rep_symbol = 0; - v_rep_count = 3; - } else if (v_table_entry == 18) { - v_n_extra_bits = 7; - v_rep_symbol = 0; - v_rep_count = 11; - } else { - status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); - goto exit; - } - while (v_n_bits < v_n_extra_bits) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint32_t t_3 = *iop_a_src++; - v_b3 = t_3; - } - v_bits |= (v_b3 << v_n_bits); - v_n_bits += 8; - } - v_rep_count += ((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U32(v_n_extra_bits)); - v_bits >>= v_n_extra_bits; - v_n_bits -= v_n_extra_bits; - while (v_rep_count > 0) { - if (v_i >= (v_n_lit + v_n_dist)) { - status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code_length_count); - goto exit; - } - self->private_data.f_code_lengths[v_i] = v_rep_symbol; - v_i += 1; - v_rep_count -= 1; - } - } - if (v_i != (v_n_lit + v_n_dist)) { - status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code_length_count); - goto exit; - } - if (self->private_data.f_code_lengths[256] == 0) { - status = wuffs_base__make_status(wuffs_deflate__error__missing_end_of_block_code); - goto exit; - } - v_status = wuffs_deflate__decoder__init_huff(self, - 0, - 0, - v_n_lit, - 257); - if (wuffs_base__status__is_error(&v_status)) { - status = v_status; - goto exit; - } - v_status = wuffs_deflate__decoder__init_huff(self, - 1, - v_n_lit, - (v_n_lit + v_n_dist), - 0); - if (wuffs_base__status__is_error(&v_status)) { - status = v_status; - goto exit; - } - self->private_impl.f_bits = v_bits; - self->private_impl.f_n_bits = v_n_bits; - - goto ok; - ok: - self->private_impl.p_init_dynamic_huffman[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_init_dynamic_huffman[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_data.s_init_dynamic_huffman[0].v_bits = v_bits; - self->private_data.s_init_dynamic_huffman[0].v_n_bits = v_n_bits; - self->private_data.s_init_dynamic_huffman[0].v_n_lit = v_n_lit; - self->private_data.s_init_dynamic_huffman[0].v_n_dist = v_n_dist; - self->private_data.s_init_dynamic_huffman[0].v_n_clen = v_n_clen; - self->private_data.s_init_dynamic_huffman[0].v_i = v_i; - self->private_data.s_init_dynamic_huffman[0].v_mask = v_mask; - self->private_data.s_init_dynamic_huffman[0].v_n_extra_bits = v_n_extra_bits; - self->private_data.s_init_dynamic_huffman[0].v_rep_symbol = v_rep_symbol; - self->private_data.s_init_dynamic_huffman[0].v_rep_count = v_rep_count; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func deflate.decoder.init_huff - -static wuffs_base__status -wuffs_deflate__decoder__init_huff( - wuffs_deflate__decoder* self, - uint32_t a_which, - uint32_t a_n_codes0, - uint32_t a_n_codes1, - uint32_t a_base_symbol) { - uint16_t v_counts[16] = {0}; - uint32_t v_i = 0; - uint32_t v_remaining = 0; - uint16_t v_offsets[16] = {0}; - uint32_t v_n_symbols = 0; - uint32_t v_count = 0; - uint16_t v_symbols[320] = {0}; - uint32_t v_min_cl = 0; - uint32_t v_max_cl = 0; - uint32_t v_initial_high_bits = 0; - uint32_t v_prev_cl = 0; - uint32_t v_prev_redirect_key = 0; - uint32_t v_top = 0; - uint32_t v_next_top = 0; - uint32_t v_code = 0; - uint32_t v_key = 0; - uint32_t v_value = 0; - uint32_t v_cl = 0; - uint32_t v_redirect_key = 0; - uint32_t v_j = 0; - uint32_t v_reversed_key = 0; - uint32_t v_symbol = 0; - uint32_t v_high_bits = 0; - uint32_t v_delta = 0; - - v_i = a_n_codes0; - while (v_i < a_n_codes1) { - if (v_counts[(self->private_data.f_code_lengths[v_i] & 15)] >= 320) { - return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); - } -#if defined(__GNUC__) -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wconversion" -#endif - v_counts[(self->private_data.f_code_lengths[v_i] & 15)] += 1; -#if defined(__GNUC__) -#pragma GCC diagnostic pop -#endif - v_i += 1; - } - if ((((uint32_t)(v_counts[0])) + a_n_codes0) == a_n_codes1) { - return wuffs_base__make_status(wuffs_deflate__error__no_huffman_codes); - } - v_remaining = 1; - v_i = 1; - while (v_i <= 15) { - if (v_remaining > 1073741824) { - return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); - } - v_remaining <<= 1; - if (v_remaining < ((uint32_t)(v_counts[v_i]))) { - return wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code_over_subscribed); - } - v_remaining -= ((uint32_t)(v_counts[v_i])); - v_i += 1; - } - if (v_remaining != 0) { - if ((a_which == 1) && (v_counts[1] == 1) && ((((uint32_t)(v_counts[0])) + a_n_codes0 + 1) == a_n_codes1)) { - v_i = 0; - while (v_i <= 29) { - if (self->private_data.f_code_lengths[(a_n_codes0 + v_i)] == 1) { - self->private_impl.f_n_huffs_bits[1] = 1; - self->private_data.f_huffs[1][0] = (WUFFS_DEFLATE__DCODE_MAGIC_NUMBERS[v_i] | 1); - self->private_data.f_huffs[1][1] = (WUFFS_DEFLATE__DCODE_MAGIC_NUMBERS[31] | 1); - return wuffs_base__make_status(NULL); - } - v_i += 1; - } - } - return wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code_under_subscribed); - } - v_i = 1; - while (v_i <= 15) { - v_offsets[v_i] = ((uint16_t)(v_n_symbols)); - v_count = ((uint32_t)(v_counts[v_i])); - if (v_n_symbols > (320 - v_count)) { - return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); - } - v_n_symbols = (v_n_symbols + v_count); - v_i += 1; - } - if (v_n_symbols > 288) { - return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); - } - v_i = a_n_codes0; - while (v_i < a_n_codes1) { - if (v_i < a_n_codes0) { - return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); - } - if (self->private_data.f_code_lengths[v_i] != 0) { - if (v_offsets[(self->private_data.f_code_lengths[v_i] & 15)] >= 320) { - return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); - } - v_symbols[v_offsets[(self->private_data.f_code_lengths[v_i] & 15)]] = ((uint16_t)((v_i - a_n_codes0))); -#if defined(__GNUC__) -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wconversion" -#endif - v_offsets[(self->private_data.f_code_lengths[v_i] & 15)] += 1; -#if defined(__GNUC__) -#pragma GCC diagnostic pop -#endif - } - v_i += 1; - } - v_min_cl = 1; - while (true) { - if (v_counts[v_min_cl] != 0) { - goto label__0__break; - } - if (v_min_cl >= 9) { - return wuffs_base__make_status(wuffs_deflate__error__bad_huffman_minimum_code_length); - } - v_min_cl += 1; - } - label__0__break:; - v_max_cl = 15; - while (true) { - if (v_counts[v_max_cl] != 0) { - goto label__1__break; - } - if (v_max_cl <= 1) { - return wuffs_base__make_status(wuffs_deflate__error__no_huffman_codes); - } - v_max_cl -= 1; - } - label__1__break:; - if (v_max_cl <= 9) { - self->private_impl.f_n_huffs_bits[a_which] = v_max_cl; - } else { - self->private_impl.f_n_huffs_bits[a_which] = 9; - } - v_i = 0; - if ((v_n_symbols != ((uint32_t)(v_offsets[v_max_cl]))) || (v_n_symbols != ((uint32_t)(v_offsets[15])))) { - return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); - } - if ((a_n_codes0 + ((uint32_t)(v_symbols[0]))) >= 320) { - return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); - } - v_initial_high_bits = 512; - if (v_max_cl < 9) { - v_initial_high_bits = (((uint32_t)(1)) << v_max_cl); - } - v_prev_cl = ((uint32_t)((self->private_data.f_code_lengths[(a_n_codes0 + ((uint32_t)(v_symbols[0])))] & 15))); - v_prev_redirect_key = 4294967295; - v_top = 0; - v_next_top = 512; - v_code = 0; - v_key = 0; - v_value = 0; - while (true) { - if ((a_n_codes0 + ((uint32_t)(v_symbols[v_i]))) >= 320) { - return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); - } - v_cl = ((uint32_t)((self->private_data.f_code_lengths[(a_n_codes0 + ((uint32_t)(v_symbols[v_i])))] & 15))); - if (v_cl > v_prev_cl) { - v_code <<= (v_cl - v_prev_cl); - if (v_code >= 32768) { - return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); - } - } - v_prev_cl = v_cl; - v_key = v_code; - if (v_cl > 9) { - v_cl -= 9; - v_redirect_key = ((v_key >> v_cl) & 511); - v_key = ((v_key) & WUFFS_BASE__LOW_BITS_MASK__U32(v_cl)); - if (v_prev_redirect_key != v_redirect_key) { - v_prev_redirect_key = v_redirect_key; - v_remaining = (((uint32_t)(1)) << v_cl); - v_j = v_prev_cl; - while (v_j <= 15) { - if (v_remaining <= ((uint32_t)(v_counts[v_j]))) { - goto label__2__break; - } - v_remaining -= ((uint32_t)(v_counts[v_j])); - if (v_remaining > 1073741824) { - return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); - } - v_remaining <<= 1; - v_j += 1; - } - label__2__break:; - if ((v_j <= 9) || (15 < v_j)) { - return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); - } - v_j -= 9; - v_initial_high_bits = (((uint32_t)(1)) << v_j); - v_top = v_next_top; - if ((v_top + (((uint32_t)(1)) << v_j)) > 1024) { - return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); - } - v_next_top = (v_top + (((uint32_t)(1)) << v_j)); - v_redirect_key = (((uint32_t)(WUFFS_DEFLATE__REVERSE8[(v_redirect_key >> 1)])) | ((v_redirect_key & 1) << 8)); - self->private_data.f_huffs[a_which][v_redirect_key] = (268435465 | (v_top << 8) | (v_j << 4)); - } - } - if ((v_key >= 512) || (v_counts[v_prev_cl] <= 0)) { - return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); - } -#if defined(__GNUC__) -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wconversion" -#endif - v_counts[v_prev_cl] -= 1; -#if defined(__GNUC__) -#pragma GCC diagnostic pop -#endif - v_reversed_key = (((uint32_t)(WUFFS_DEFLATE__REVERSE8[(v_key >> 1)])) | ((v_key & 1) << 8)); - v_reversed_key >>= (9 - v_cl); - v_symbol = ((uint32_t)(v_symbols[v_i])); - if (v_symbol == 256) { - v_value = (536870912 | v_cl); - } else if ((v_symbol < 256) && (a_which == 0)) { - v_value = (2147483648 | (v_symbol << 8) | v_cl); - } else if (v_symbol >= a_base_symbol) { - v_symbol -= a_base_symbol; - if (a_which == 0) { - v_value = (WUFFS_DEFLATE__LCODE_MAGIC_NUMBERS[(v_symbol & 31)] | v_cl); - } else { - v_value = (WUFFS_DEFLATE__DCODE_MAGIC_NUMBERS[(v_symbol & 31)] | v_cl); - } - } else { - return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); - } - v_high_bits = v_initial_high_bits; - v_delta = (((uint32_t)(1)) << v_cl); - while (v_high_bits >= v_delta) { - v_high_bits -= v_delta; - if ((v_top + ((v_high_bits | v_reversed_key) & 511)) >= 1024) { - return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); - } - self->private_data.f_huffs[a_which][(v_top + ((v_high_bits | v_reversed_key) & 511))] = v_value; - } - v_i += 1; - if (v_i >= v_n_symbols) { - goto label__3__break; - } - v_code += 1; - if (v_code >= 32768) { - return wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); - } - } - label__3__break:; - return wuffs_base__make_status(NULL); -} - -// ‼ WUFFS MULTI-FILE SECTION +x86_bmi2 -// -------- func deflate.decoder.decode_huffman_bmi2 - -#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) -WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("bmi2") -static wuffs_base__status -wuffs_deflate__decoder__decode_huffman_bmi2( - wuffs_deflate__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint64_t v_bits = 0; - uint32_t v_n_bits = 0; - uint32_t v_table_entry = 0; - uint32_t v_table_entry_n_bits = 0; - uint64_t v_lmask = 0; - uint64_t v_dmask = 0; - uint32_t v_redir_top = 0; - uint32_t v_redir_mask = 0; - uint32_t v_length = 0; - uint32_t v_dist_minus_1 = 0; - uint32_t v_hlen = 0; - uint32_t v_hdist = 0; - uint32_t v_hdist_adjustment = 0; - - uint8_t* iop_a_dst = NULL; - uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_dst && a_dst->data.ptr) { - io0_a_dst = a_dst->data.ptr; - io1_a_dst = io0_a_dst + a_dst->meta.wi; - iop_a_dst = io1_a_dst; - io2_a_dst = io0_a_dst + a_dst->data.len; - if (a_dst->meta.closed) { - io2_a_dst = iop_a_dst; - } - } - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - if ((self->private_impl.f_n_bits >= 8) || ((self->private_impl.f_bits >> (self->private_impl.f_n_bits & 7)) != 0)) { - status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits); - goto exit; - } - v_bits = ((uint64_t)(self->private_impl.f_bits)); - v_n_bits = self->private_impl.f_n_bits; - v_lmask = ((((uint64_t)(1)) << self->private_impl.f_n_huffs_bits[0]) - 1); - v_dmask = ((((uint64_t)(1)) << self->private_impl.f_n_huffs_bits[1]) - 1); - if (self->private_impl.f_transformed_history_count < (a_dst ? a_dst->meta.pos : 0)) { - status = wuffs_base__make_status(wuffs_base__error__bad_i_o_position); - goto exit; - } - v_hdist_adjustment = ((uint32_t)(((self->private_impl.f_transformed_history_count - (a_dst ? a_dst->meta.pos : 0)) & 4294967295))); - label__loop__continue:; - while ((((uint64_t)(io2_a_dst - iop_a_dst)) >= 266) && (((uint64_t)(io2_a_src - iop_a_src)) >= 8)) { - v_bits |= ((uint64_t)(wuffs_base__peek_u64le__no_bounds_check(iop_a_src) << (v_n_bits & 63))); - iop_a_src += ((63 - (v_n_bits & 63)) >> 3); - v_n_bits |= 56; - v_table_entry = self->private_data.f_huffs[0][(v_bits & v_lmask)]; - v_table_entry_n_bits = (v_table_entry & 15); - v_bits >>= v_table_entry_n_bits; - v_n_bits -= v_table_entry_n_bits; - if ((v_table_entry >> 31) != 0) { - (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)(((v_table_entry >> 8) & 255)))), iop_a_dst += 1); - goto label__loop__continue; - } else if ((v_table_entry >> 30) != 0) { - } else if ((v_table_entry >> 29) != 0) { - self->private_impl.f_end_of_block = true; - goto label__loop__break; - } else if ((v_table_entry >> 28) != 0) { - v_redir_top = ((v_table_entry >> 8) & 65535); - v_redir_mask = ((((uint32_t)(1)) << ((v_table_entry >> 4) & 15)) - 1); - v_table_entry = self->private_data.f_huffs[0][((v_redir_top + (((uint32_t)((v_bits & 4294967295))) & v_redir_mask)) & 1023)]; - v_table_entry_n_bits = (v_table_entry & 15); - v_bits >>= v_table_entry_n_bits; - v_n_bits -= v_table_entry_n_bits; - if ((v_table_entry >> 31) != 0) { - (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)(((v_table_entry >> 8) & 255)))), iop_a_dst += 1); - goto label__loop__continue; - } else if ((v_table_entry >> 30) != 0) { - } else if ((v_table_entry >> 29) != 0) { - self->private_impl.f_end_of_block = true; - goto label__loop__break; - } else if ((v_table_entry >> 28) != 0) { - status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); - goto exit; - } else if ((v_table_entry >> 27) != 0) { - status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code); - goto exit; - } else { - status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); - goto exit; - } - } else if ((v_table_entry >> 27) != 0) { - status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code); - goto exit; - } else { - status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); - goto exit; - } - v_length = (((v_table_entry >> 8) & 255) + 3); - v_table_entry_n_bits = ((v_table_entry >> 4) & 15); - if (v_table_entry_n_bits > 0) { - v_length = (((v_length + 253 + ((uint32_t)(((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U64(v_table_entry_n_bits))))) & 255) + 3); - v_bits >>= v_table_entry_n_bits; - v_n_bits -= v_table_entry_n_bits; - } - v_table_entry = self->private_data.f_huffs[1][(v_bits & v_dmask)]; - v_table_entry_n_bits = (v_table_entry & 15); - v_bits >>= v_table_entry_n_bits; - v_n_bits -= v_table_entry_n_bits; - if ((v_table_entry >> 28) == 1) { - v_redir_top = ((v_table_entry >> 8) & 65535); - v_redir_mask = ((((uint32_t)(1)) << ((v_table_entry >> 4) & 15)) - 1); - v_table_entry = self->private_data.f_huffs[1][((v_redir_top + (((uint32_t)((v_bits & 4294967295))) & v_redir_mask)) & 1023)]; - v_table_entry_n_bits = (v_table_entry & 15); - v_bits >>= v_table_entry_n_bits; - v_n_bits -= v_table_entry_n_bits; - } - if ((v_table_entry >> 24) != 64) { - if ((v_table_entry >> 24) == 8) { - status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code); - goto exit; - } - status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); - goto exit; - } - v_dist_minus_1 = ((v_table_entry >> 8) & 32767); - v_table_entry_n_bits = ((v_table_entry >> 4) & 15); - v_dist_minus_1 = ((v_dist_minus_1 + ((uint32_t)(((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U64(v_table_entry_n_bits))))) & 32767); - v_bits >>= v_table_entry_n_bits; - v_n_bits -= v_table_entry_n_bits; - while (true) { - if (((uint64_t)((v_dist_minus_1 + 1))) > ((uint64_t)(iop_a_dst - io0_a_dst))) { - v_hlen = 0; - v_hdist = ((uint32_t)((((uint64_t)((v_dist_minus_1 + 1))) - ((uint64_t)(iop_a_dst - io0_a_dst))))); - if (v_length > v_hdist) { - v_length -= v_hdist; - v_hlen = v_hdist; - } else { - v_hlen = v_length; - v_length = 0; - } - v_hdist += v_hdist_adjustment; - if (self->private_impl.f_history_index < v_hdist) { - status = wuffs_base__make_status(wuffs_deflate__error__bad_distance); - goto exit; - } - wuffs_base__io_writer__limited_copy_u32_from_slice( - &iop_a_dst, io2_a_dst,v_hlen, wuffs_base__make_slice_u8_ij(self->private_data.f_history, ((self->private_impl.f_history_index - v_hdist) & 32767), 33025)); - if (v_length == 0) { - goto label__loop__continue; - } - if ((((uint64_t)((v_dist_minus_1 + 1))) > ((uint64_t)(iop_a_dst - io0_a_dst))) || (((uint64_t)(v_length)) > ((uint64_t)(io2_a_dst - iop_a_dst))) || (((uint64_t)((v_length + 8))) > ((uint64_t)(io2_a_dst - iop_a_dst)))) { - status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_distance); - goto exit; - } - } - if ((v_dist_minus_1 + 1) >= 8) { - wuffs_base__io_writer__limited_copy_u32_from_history_8_byte_chunks_fast( - &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1)); - } else if ((v_dist_minus_1 + 1) == 1) { - wuffs_base__io_writer__limited_copy_u32_from_history_8_byte_chunks_distance_1_fast( - &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1)); - } else { - wuffs_base__io_writer__limited_copy_u32_from_history_fast( - &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1)); - } - goto label__0__break; - } - label__0__break:; - } - label__loop__break:; - if (v_n_bits > 63) { - status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits); - goto exit; - } - while (v_n_bits >= 8) { - v_n_bits -= 8; - if (iop_a_src > io1_a_src) { - iop_a_src--; - } else { - status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_i_o); - goto exit; - } - } - self->private_impl.f_bits = ((uint32_t)((v_bits & ((((uint64_t)(1)) << v_n_bits) - 1)))); - self->private_impl.f_n_bits = v_n_bits; - if ((self->private_impl.f_n_bits >= 8) || ((self->private_impl.f_bits >> self->private_impl.f_n_bits) != 0)) { - status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits); - goto exit; - } - goto exit; - exit: - if (a_dst && a_dst->data.ptr) { - a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); - } - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} -#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) -// ‼ WUFFS MULTI-FILE SECTION -x86_bmi2 - -// -------- func deflate.decoder.decode_huffman_fast32 - -static wuffs_base__status -wuffs_deflate__decoder__decode_huffman_fast32( - wuffs_deflate__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint32_t v_bits = 0; - uint32_t v_n_bits = 0; - uint32_t v_table_entry = 0; - uint32_t v_table_entry_n_bits = 0; - uint32_t v_lmask = 0; - uint32_t v_dmask = 0; - uint32_t v_redir_top = 0; - uint32_t v_redir_mask = 0; - uint32_t v_length = 0; - uint32_t v_dist_minus_1 = 0; - uint32_t v_hlen = 0; - uint32_t v_hdist = 0; - uint32_t v_hdist_adjustment = 0; - - uint8_t* iop_a_dst = NULL; - uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_dst && a_dst->data.ptr) { - io0_a_dst = a_dst->data.ptr; - io1_a_dst = io0_a_dst + a_dst->meta.wi; - iop_a_dst = io1_a_dst; - io2_a_dst = io0_a_dst + a_dst->data.len; - if (a_dst->meta.closed) { - io2_a_dst = iop_a_dst; - } - } - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - if ((self->private_impl.f_n_bits >= 8) || ((self->private_impl.f_bits >> (self->private_impl.f_n_bits & 7)) != 0)) { - status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits); - goto exit; - } - v_bits = self->private_impl.f_bits; - v_n_bits = self->private_impl.f_n_bits; - v_lmask = ((((uint32_t)(1)) << self->private_impl.f_n_huffs_bits[0]) - 1); - v_dmask = ((((uint32_t)(1)) << self->private_impl.f_n_huffs_bits[1]) - 1); - if (self->private_impl.f_transformed_history_count < (a_dst ? a_dst->meta.pos : 0)) { - status = wuffs_base__make_status(wuffs_base__error__bad_i_o_position); - goto exit; - } - v_hdist_adjustment = ((uint32_t)(((self->private_impl.f_transformed_history_count - (a_dst ? a_dst->meta.pos : 0)) & 4294967295))); - label__loop__continue:; - while ((((uint64_t)(io2_a_dst - iop_a_dst)) >= 266) && (((uint64_t)(io2_a_src - iop_a_src)) >= 12)) { - if (v_n_bits < 15) { - v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits); - iop_a_src += 1; - v_n_bits += 8; - v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits); - iop_a_src += 1; - v_n_bits += 8; - } else { - } - v_table_entry = self->private_data.f_huffs[0][(v_bits & v_lmask)]; - v_table_entry_n_bits = (v_table_entry & 15); - v_bits >>= v_table_entry_n_bits; - v_n_bits -= v_table_entry_n_bits; - if ((v_table_entry >> 31) != 0) { - (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)(((v_table_entry >> 8) & 255)))), iop_a_dst += 1); - goto label__loop__continue; - } else if ((v_table_entry >> 30) != 0) { - } else if ((v_table_entry >> 29) != 0) { - self->private_impl.f_end_of_block = true; - goto label__loop__break; - } else if ((v_table_entry >> 28) != 0) { - if (v_n_bits < 15) { - v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits); - iop_a_src += 1; - v_n_bits += 8; - v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits); - iop_a_src += 1; - v_n_bits += 8; - } else { - } - v_redir_top = ((v_table_entry >> 8) & 65535); - v_redir_mask = ((((uint32_t)(1)) << ((v_table_entry >> 4) & 15)) - 1); - v_table_entry = self->private_data.f_huffs[0][((v_redir_top + (v_bits & v_redir_mask)) & 1023)]; - v_table_entry_n_bits = (v_table_entry & 15); - v_bits >>= v_table_entry_n_bits; - v_n_bits -= v_table_entry_n_bits; - if ((v_table_entry >> 31) != 0) { - (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)(((v_table_entry >> 8) & 255)))), iop_a_dst += 1); - goto label__loop__continue; - } else if ((v_table_entry >> 30) != 0) { - } else if ((v_table_entry >> 29) != 0) { - self->private_impl.f_end_of_block = true; - goto label__loop__break; - } else if ((v_table_entry >> 28) != 0) { - status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); - goto exit; - } else if ((v_table_entry >> 27) != 0) { - status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code); - goto exit; - } else { - status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); - goto exit; - } - } else if ((v_table_entry >> 27) != 0) { - status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code); - goto exit; - } else { - status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); - goto exit; - } - v_length = (((v_table_entry >> 8) & 255) + 3); - v_table_entry_n_bits = ((v_table_entry >> 4) & 15); - if (v_table_entry_n_bits > 0) { - if (v_n_bits < 15) { - v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits); - iop_a_src += 1; - v_n_bits += 8; - v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits); - iop_a_src += 1; - v_n_bits += 8; - } else { - } - v_length = (((v_length + 253 + ((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U32(v_table_entry_n_bits))) & 255) + 3); - v_bits >>= v_table_entry_n_bits; - v_n_bits -= v_table_entry_n_bits; - } else { - } - if (v_n_bits < 15) { - v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits); - iop_a_src += 1; - v_n_bits += 8; - v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits); - iop_a_src += 1; - v_n_bits += 8; - } else { - } - v_table_entry = self->private_data.f_huffs[1][(v_bits & v_dmask)]; - v_table_entry_n_bits = (v_table_entry & 15); - v_bits >>= v_table_entry_n_bits; - v_n_bits -= v_table_entry_n_bits; - if ((v_table_entry >> 28) == 1) { - if (v_n_bits < 15) { - v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits); - iop_a_src += 1; - v_n_bits += 8; - v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits); - iop_a_src += 1; - v_n_bits += 8; - } else { - } - v_redir_top = ((v_table_entry >> 8) & 65535); - v_redir_mask = ((((uint32_t)(1)) << ((v_table_entry >> 4) & 15)) - 1); - v_table_entry = self->private_data.f_huffs[1][((v_redir_top + (v_bits & v_redir_mask)) & 1023)]; - v_table_entry_n_bits = (v_table_entry & 15); - v_bits >>= v_table_entry_n_bits; - v_n_bits -= v_table_entry_n_bits; - } else { - } - if ((v_table_entry >> 24) != 64) { - if ((v_table_entry >> 24) == 8) { - status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code); - goto exit; - } - status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); - goto exit; - } - v_dist_minus_1 = ((v_table_entry >> 8) & 32767); - v_table_entry_n_bits = ((v_table_entry >> 4) & 15); - if (v_n_bits < v_table_entry_n_bits) { - v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits); - iop_a_src += 1; - v_n_bits += 8; - v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits); - iop_a_src += 1; - v_n_bits += 8; - } - v_dist_minus_1 = ((v_dist_minus_1 + ((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U32(v_table_entry_n_bits))) & 32767); - v_bits >>= v_table_entry_n_bits; - v_n_bits -= v_table_entry_n_bits; - while (true) { - if (((uint64_t)((v_dist_minus_1 + 1))) > ((uint64_t)(iop_a_dst - io0_a_dst))) { - v_hlen = 0; - v_hdist = ((uint32_t)((((uint64_t)((v_dist_minus_1 + 1))) - ((uint64_t)(iop_a_dst - io0_a_dst))))); - if (v_length > v_hdist) { - v_length -= v_hdist; - v_hlen = v_hdist; - } else { - v_hlen = v_length; - v_length = 0; - } - v_hdist += v_hdist_adjustment; - if (self->private_impl.f_history_index < v_hdist) { - status = wuffs_base__make_status(wuffs_deflate__error__bad_distance); - goto exit; - } - wuffs_base__io_writer__limited_copy_u32_from_slice( - &iop_a_dst, io2_a_dst,v_hlen, wuffs_base__make_slice_u8_ij(self->private_data.f_history, ((self->private_impl.f_history_index - v_hdist) & 32767), 33025)); - if (v_length == 0) { - goto label__loop__continue; - } - if ((((uint64_t)((v_dist_minus_1 + 1))) > ((uint64_t)(iop_a_dst - io0_a_dst))) || (((uint64_t)(v_length)) > ((uint64_t)(io2_a_dst - iop_a_dst))) || (((uint64_t)((v_length + 8))) > ((uint64_t)(io2_a_dst - iop_a_dst)))) { - status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_distance); - goto exit; - } - } - if ((v_dist_minus_1 + 1) >= 8) { - wuffs_base__io_writer__limited_copy_u32_from_history_8_byte_chunks_fast( - &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1)); - } else { - wuffs_base__io_writer__limited_copy_u32_from_history_fast( - &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1)); - } - goto label__0__break; - } - label__0__break:; - } - label__loop__break:; - while (v_n_bits >= 8) { - v_n_bits -= 8; - if (iop_a_src > io1_a_src) { - iop_a_src--; - } else { - status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_i_o); - goto exit; - } - } - self->private_impl.f_bits = (v_bits & ((((uint32_t)(1)) << v_n_bits) - 1)); - self->private_impl.f_n_bits = v_n_bits; - if ((self->private_impl.f_n_bits >= 8) || ((self->private_impl.f_bits >> self->private_impl.f_n_bits) != 0)) { - status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits); - goto exit; - } - goto exit; - exit: - if (a_dst && a_dst->data.ptr) { - a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); - } - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func deflate.decoder.decode_huffman_fast64 - -static wuffs_base__status -wuffs_deflate__decoder__decode_huffman_fast64( - wuffs_deflate__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__io_buffer* a_src) { - return (*self->private_impl.choosy_decode_huffman_fast64)(self, a_dst, a_src); -} - -static wuffs_base__status -wuffs_deflate__decoder__decode_huffman_fast64__choosy_default( - wuffs_deflate__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint64_t v_bits = 0; - uint32_t v_n_bits = 0; - uint32_t v_table_entry = 0; - uint32_t v_table_entry_n_bits = 0; - uint64_t v_lmask = 0; - uint64_t v_dmask = 0; - uint32_t v_redir_top = 0; - uint32_t v_redir_mask = 0; - uint32_t v_length = 0; - uint32_t v_dist_minus_1 = 0; - uint32_t v_hlen = 0; - uint32_t v_hdist = 0; - uint32_t v_hdist_adjustment = 0; - - uint8_t* iop_a_dst = NULL; - uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_dst && a_dst->data.ptr) { - io0_a_dst = a_dst->data.ptr; - io1_a_dst = io0_a_dst + a_dst->meta.wi; - iop_a_dst = io1_a_dst; - io2_a_dst = io0_a_dst + a_dst->data.len; - if (a_dst->meta.closed) { - io2_a_dst = iop_a_dst; - } - } - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - if ((self->private_impl.f_n_bits >= 8) || ((self->private_impl.f_bits >> (self->private_impl.f_n_bits & 7)) != 0)) { - status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits); - goto exit; - } - v_bits = ((uint64_t)(self->private_impl.f_bits)); - v_n_bits = self->private_impl.f_n_bits; - v_lmask = ((((uint64_t)(1)) << self->private_impl.f_n_huffs_bits[0]) - 1); - v_dmask = ((((uint64_t)(1)) << self->private_impl.f_n_huffs_bits[1]) - 1); - if (self->private_impl.f_transformed_history_count < (a_dst ? a_dst->meta.pos : 0)) { - status = wuffs_base__make_status(wuffs_base__error__bad_i_o_position); - goto exit; - } - v_hdist_adjustment = ((uint32_t)(((self->private_impl.f_transformed_history_count - (a_dst ? a_dst->meta.pos : 0)) & 4294967295))); - label__loop__continue:; - while ((((uint64_t)(io2_a_dst - iop_a_dst)) >= 266) && (((uint64_t)(io2_a_src - iop_a_src)) >= 8)) { - v_bits |= ((uint64_t)(wuffs_base__peek_u64le__no_bounds_check(iop_a_src) << (v_n_bits & 63))); - iop_a_src += ((63 - (v_n_bits & 63)) >> 3); - v_n_bits |= 56; - v_table_entry = self->private_data.f_huffs[0][(v_bits & v_lmask)]; - v_table_entry_n_bits = (v_table_entry & 15); - v_bits >>= v_table_entry_n_bits; - v_n_bits -= v_table_entry_n_bits; - if ((v_table_entry >> 31) != 0) { - (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)(((v_table_entry >> 8) & 255)))), iop_a_dst += 1); - goto label__loop__continue; - } else if ((v_table_entry >> 30) != 0) { - } else if ((v_table_entry >> 29) != 0) { - self->private_impl.f_end_of_block = true; - goto label__loop__break; - } else if ((v_table_entry >> 28) != 0) { - v_redir_top = ((v_table_entry >> 8) & 65535); - v_redir_mask = ((((uint32_t)(1)) << ((v_table_entry >> 4) & 15)) - 1); - v_table_entry = self->private_data.f_huffs[0][((v_redir_top + (((uint32_t)((v_bits & 4294967295))) & v_redir_mask)) & 1023)]; - v_table_entry_n_bits = (v_table_entry & 15); - v_bits >>= v_table_entry_n_bits; - v_n_bits -= v_table_entry_n_bits; - if ((v_table_entry >> 31) != 0) { - (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)(((v_table_entry >> 8) & 255)))), iop_a_dst += 1); - goto label__loop__continue; - } else if ((v_table_entry >> 30) != 0) { - } else if ((v_table_entry >> 29) != 0) { - self->private_impl.f_end_of_block = true; - goto label__loop__break; - } else if ((v_table_entry >> 28) != 0) { - status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); - goto exit; - } else if ((v_table_entry >> 27) != 0) { - status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code); - goto exit; - } else { - status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); - goto exit; - } - } else if ((v_table_entry >> 27) != 0) { - status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code); - goto exit; - } else { - status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); - goto exit; - } - v_length = (((v_table_entry >> 8) & 255) + 3); - v_table_entry_n_bits = ((v_table_entry >> 4) & 15); - if (v_table_entry_n_bits > 0) { - v_length = (((v_length + 253 + ((uint32_t)(((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U64(v_table_entry_n_bits))))) & 255) + 3); - v_bits >>= v_table_entry_n_bits; - v_n_bits -= v_table_entry_n_bits; - } - v_table_entry = self->private_data.f_huffs[1][(v_bits & v_dmask)]; - v_table_entry_n_bits = (v_table_entry & 15); - v_bits >>= v_table_entry_n_bits; - v_n_bits -= v_table_entry_n_bits; - if ((v_table_entry >> 28) == 1) { - v_redir_top = ((v_table_entry >> 8) & 65535); - v_redir_mask = ((((uint32_t)(1)) << ((v_table_entry >> 4) & 15)) - 1); - v_table_entry = self->private_data.f_huffs[1][((v_redir_top + (((uint32_t)((v_bits & 4294967295))) & v_redir_mask)) & 1023)]; - v_table_entry_n_bits = (v_table_entry & 15); - v_bits >>= v_table_entry_n_bits; - v_n_bits -= v_table_entry_n_bits; - } - if ((v_table_entry >> 24) != 64) { - if ((v_table_entry >> 24) == 8) { - status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code); - goto exit; - } - status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); - goto exit; - } - v_dist_minus_1 = ((v_table_entry >> 8) & 32767); - v_table_entry_n_bits = ((v_table_entry >> 4) & 15); - v_dist_minus_1 = ((v_dist_minus_1 + ((uint32_t)(((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U64(v_table_entry_n_bits))))) & 32767); - v_bits >>= v_table_entry_n_bits; - v_n_bits -= v_table_entry_n_bits; - while (true) { - if (((uint64_t)((v_dist_minus_1 + 1))) > ((uint64_t)(iop_a_dst - io0_a_dst))) { - v_hlen = 0; - v_hdist = ((uint32_t)((((uint64_t)((v_dist_minus_1 + 1))) - ((uint64_t)(iop_a_dst - io0_a_dst))))); - if (v_length > v_hdist) { - v_length -= v_hdist; - v_hlen = v_hdist; - } else { - v_hlen = v_length; - v_length = 0; - } - v_hdist += v_hdist_adjustment; - if (self->private_impl.f_history_index < v_hdist) { - status = wuffs_base__make_status(wuffs_deflate__error__bad_distance); - goto exit; - } - wuffs_base__io_writer__limited_copy_u32_from_slice( - &iop_a_dst, io2_a_dst,v_hlen, wuffs_base__make_slice_u8_ij(self->private_data.f_history, ((self->private_impl.f_history_index - v_hdist) & 32767), 33025)); - if (v_length == 0) { - goto label__loop__continue; - } - if ((((uint64_t)((v_dist_minus_1 + 1))) > ((uint64_t)(iop_a_dst - io0_a_dst))) || (((uint64_t)(v_length)) > ((uint64_t)(io2_a_dst - iop_a_dst))) || (((uint64_t)((v_length + 8))) > ((uint64_t)(io2_a_dst - iop_a_dst)))) { - status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_distance); - goto exit; - } - } - if ((v_dist_minus_1 + 1) >= 8) { - wuffs_base__io_writer__limited_copy_u32_from_history_8_byte_chunks_fast( - &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1)); - } else if ((v_dist_minus_1 + 1) == 1) { - wuffs_base__io_writer__limited_copy_u32_from_history_8_byte_chunks_distance_1_fast( - &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1)); - } else { - wuffs_base__io_writer__limited_copy_u32_from_history_fast( - &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1)); - } - goto label__0__break; - } - label__0__break:; - } - label__loop__break:; - if (v_n_bits > 63) { - status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits); - goto exit; - } - while (v_n_bits >= 8) { - v_n_bits -= 8; - if (iop_a_src > io1_a_src) { - iop_a_src--; - } else { - status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_i_o); - goto exit; - } - } - self->private_impl.f_bits = ((uint32_t)((v_bits & ((((uint64_t)(1)) << v_n_bits) - 1)))); - self->private_impl.f_n_bits = v_n_bits; - if ((self->private_impl.f_n_bits >= 8) || ((self->private_impl.f_bits >> self->private_impl.f_n_bits) != 0)) { - status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits); - goto exit; - } - goto exit; - exit: - if (a_dst && a_dst->data.ptr) { - a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); - } - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func deflate.decoder.decode_huffman_slow - -static wuffs_base__status -wuffs_deflate__decoder__decode_huffman_slow( - wuffs_deflate__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint32_t v_bits = 0; - uint32_t v_n_bits = 0; - uint32_t v_table_entry = 0; - uint32_t v_table_entry_n_bits = 0; - uint32_t v_lmask = 0; - uint32_t v_dmask = 0; - uint32_t v_b0 = 0; - uint32_t v_redir_top = 0; - uint32_t v_redir_mask = 0; - uint32_t v_b1 = 0; - uint32_t v_length = 0; - uint32_t v_b2 = 0; - uint32_t v_b3 = 0; - uint32_t v_b4 = 0; - uint32_t v_dist_minus_1 = 0; - uint32_t v_b5 = 0; - uint32_t v_n_copied = 0; - uint32_t v_hlen = 0; - uint32_t v_hdist = 0; - - uint8_t* iop_a_dst = NULL; - uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_dst && a_dst->data.ptr) { - io0_a_dst = a_dst->data.ptr; - io1_a_dst = io0_a_dst + a_dst->meta.wi; - iop_a_dst = io1_a_dst; - io2_a_dst = io0_a_dst + a_dst->data.len; - if (a_dst->meta.closed) { - io2_a_dst = iop_a_dst; - } - } - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_decode_huffman_slow[0]; - if (coro_susp_point) { - v_bits = self->private_data.s_decode_huffman_slow[0].v_bits; - v_n_bits = self->private_data.s_decode_huffman_slow[0].v_n_bits; - v_table_entry_n_bits = self->private_data.s_decode_huffman_slow[0].v_table_entry_n_bits; - v_lmask = self->private_data.s_decode_huffman_slow[0].v_lmask; - v_dmask = self->private_data.s_decode_huffman_slow[0].v_dmask; - v_redir_top = self->private_data.s_decode_huffman_slow[0].v_redir_top; - v_redir_mask = self->private_data.s_decode_huffman_slow[0].v_redir_mask; - v_length = self->private_data.s_decode_huffman_slow[0].v_length; - v_dist_minus_1 = self->private_data.s_decode_huffman_slow[0].v_dist_minus_1; - } - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - if ((self->private_impl.f_n_bits >= 8) || ((self->private_impl.f_bits >> (self->private_impl.f_n_bits & 7)) != 0)) { - status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits); - goto exit; - } - v_bits = self->private_impl.f_bits; - v_n_bits = self->private_impl.f_n_bits; - v_lmask = ((((uint32_t)(1)) << self->private_impl.f_n_huffs_bits[0]) - 1); - v_dmask = ((((uint32_t)(1)) << self->private_impl.f_n_huffs_bits[1]) - 1); - label__loop__continue:; - while ( ! (self->private_impl.p_decode_huffman_slow[0] != 0)) { - while (true) { - v_table_entry = self->private_data.f_huffs[0][(v_bits & v_lmask)]; - v_table_entry_n_bits = (v_table_entry & 15); - if (v_n_bits >= v_table_entry_n_bits) { - v_bits >>= v_table_entry_n_bits; - v_n_bits -= v_table_entry_n_bits; - goto label__0__break; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint32_t t_0 = *iop_a_src++; - v_b0 = t_0; - } - v_bits |= (v_b0 << v_n_bits); - v_n_bits += 8; - } - label__0__break:; - if ((v_table_entry >> 31) != 0) { - self->private_data.s_decode_huffman_slow[0].scratch = ((uint8_t)(((v_table_entry >> 8) & 255))); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - if (iop_a_dst == io2_a_dst) { - status = wuffs_base__make_status(wuffs_base__suspension__short_write); - goto suspend; - } - *iop_a_dst++ = ((uint8_t)(self->private_data.s_decode_huffman_slow[0].scratch)); - goto label__loop__continue; - } else if ((v_table_entry >> 30) != 0) { - } else if ((v_table_entry >> 29) != 0) { - self->private_impl.f_end_of_block = true; - goto label__loop__break; - } else if ((v_table_entry >> 28) != 0) { - v_redir_top = ((v_table_entry >> 8) & 65535); - v_redir_mask = ((((uint32_t)(1)) << ((v_table_entry >> 4) & 15)) - 1); - while (true) { - v_table_entry = self->private_data.f_huffs[0][((v_redir_top + (v_bits & v_redir_mask)) & 1023)]; - v_table_entry_n_bits = (v_table_entry & 15); - if (v_n_bits >= v_table_entry_n_bits) { - v_bits >>= v_table_entry_n_bits; - v_n_bits -= v_table_entry_n_bits; - goto label__1__break; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint32_t t_1 = *iop_a_src++; - v_b1 = t_1; - } - v_bits |= (v_b1 << v_n_bits); - v_n_bits += 8; - } - label__1__break:; - if ((v_table_entry >> 31) != 0) { - self->private_data.s_decode_huffman_slow[0].scratch = ((uint8_t)(((v_table_entry >> 8) & 255))); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); - if (iop_a_dst == io2_a_dst) { - status = wuffs_base__make_status(wuffs_base__suspension__short_write); - goto suspend; - } - *iop_a_dst++ = ((uint8_t)(self->private_data.s_decode_huffman_slow[0].scratch)); - goto label__loop__continue; - } else if ((v_table_entry >> 30) != 0) { - } else if ((v_table_entry >> 29) != 0) { - self->private_impl.f_end_of_block = true; - goto label__loop__break; - } else if ((v_table_entry >> 28) != 0) { - status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); - goto exit; - } else if ((v_table_entry >> 27) != 0) { - status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code); - goto exit; - } else { - status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); - goto exit; - } - } else if ((v_table_entry >> 27) != 0) { - status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code); - goto exit; - } else { - status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); - goto exit; - } - v_length = (((v_table_entry >> 8) & 255) + 3); - v_table_entry_n_bits = ((v_table_entry >> 4) & 15); - if (v_table_entry_n_bits > 0) { - while (v_n_bits < v_table_entry_n_bits) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint32_t t_2 = *iop_a_src++; - v_b2 = t_2; - } - v_bits |= (v_b2 << v_n_bits); - v_n_bits += 8; - } - v_length = (((v_length + 253 + ((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U32(v_table_entry_n_bits))) & 255) + 3); - v_bits >>= v_table_entry_n_bits; - v_n_bits -= v_table_entry_n_bits; - } - while (true) { - v_table_entry = self->private_data.f_huffs[1][(v_bits & v_dmask)]; - v_table_entry_n_bits = (v_table_entry & 15); - if (v_n_bits >= v_table_entry_n_bits) { - v_bits >>= v_table_entry_n_bits; - v_n_bits -= v_table_entry_n_bits; - goto label__2__break; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint32_t t_3 = *iop_a_src++; - v_b3 = t_3; - } - v_bits |= (v_b3 << v_n_bits); - v_n_bits += 8; - } - label__2__break:; - if ((v_table_entry >> 28) == 1) { - v_redir_top = ((v_table_entry >> 8) & 65535); - v_redir_mask = ((((uint32_t)(1)) << ((v_table_entry >> 4) & 15)) - 1); - while (true) { - v_table_entry = self->private_data.f_huffs[1][((v_redir_top + (v_bits & v_redir_mask)) & 1023)]; - v_table_entry_n_bits = (v_table_entry & 15); - if (v_n_bits >= v_table_entry_n_bits) { - v_bits >>= v_table_entry_n_bits; - v_n_bits -= v_table_entry_n_bits; - goto label__3__break; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint32_t t_4 = *iop_a_src++; - v_b4 = t_4; - } - v_bits |= (v_b4 << v_n_bits); - v_n_bits += 8; - } - label__3__break:; - } - if ((v_table_entry >> 24) != 64) { - if ((v_table_entry >> 24) == 8) { - status = wuffs_base__make_status(wuffs_deflate__error__bad_huffman_code); - goto exit; - } - status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_huffman_decoder_state); - goto exit; - } - v_dist_minus_1 = ((v_table_entry >> 8) & 32767); - v_table_entry_n_bits = ((v_table_entry >> 4) & 15); - if (v_table_entry_n_bits > 0) { - while (v_n_bits < v_table_entry_n_bits) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint32_t t_5 = *iop_a_src++; - v_b5 = t_5; - } - v_bits |= (v_b5 << v_n_bits); - v_n_bits += 8; - } - v_dist_minus_1 = ((v_dist_minus_1 + ((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U32(v_table_entry_n_bits))) & 32767); - v_bits >>= v_table_entry_n_bits; - v_n_bits -= v_table_entry_n_bits; - } - label__inner__continue:; - while (true) { - if (((uint64_t)((v_dist_minus_1 + 1))) > ((uint64_t)(iop_a_dst - io0_a_dst))) { - v_hdist = ((uint32_t)((((uint64_t)((v_dist_minus_1 + 1))) - ((uint64_t)(iop_a_dst - io0_a_dst))))); - if (v_hdist < v_length) { - v_hlen = v_hdist; - } else { - v_hlen = v_length; - } - v_hdist += ((uint32_t)((((uint64_t)(self->private_impl.f_transformed_history_count - (a_dst ? a_dst->meta.pos : 0))) & 4294967295))); - if (self->private_impl.f_history_index < v_hdist) { - status = wuffs_base__make_status(wuffs_deflate__error__bad_distance); - goto exit; - } - v_n_copied = wuffs_base__io_writer__limited_copy_u32_from_slice( - &iop_a_dst, io2_a_dst,v_hlen, wuffs_base__make_slice_u8_ij(self->private_data.f_history, ((self->private_impl.f_history_index - v_hdist) & 32767), 33025)); - if (v_n_copied < v_hlen) { - v_length -= v_n_copied; - status = wuffs_base__make_status(wuffs_base__suspension__short_write); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(9); - goto label__inner__continue; - } - v_length -= v_hlen; - if (v_length == 0) { - goto label__loop__continue; - } - } - v_n_copied = wuffs_base__io_writer__limited_copy_u32_from_history( - &iop_a_dst, io0_a_dst, io2_a_dst, v_length, (v_dist_minus_1 + 1)); - if (v_length <= v_n_copied) { - goto label__loop__continue; - } - v_length -= v_n_copied; - status = wuffs_base__make_status(wuffs_base__suspension__short_write); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(10); - } - } - label__loop__break:; - self->private_impl.f_bits = v_bits; - self->private_impl.f_n_bits = v_n_bits; - if ((self->private_impl.f_n_bits >= 8) || ((self->private_impl.f_bits >> (self->private_impl.f_n_bits & 7)) != 0)) { - status = wuffs_base__make_status(wuffs_deflate__error__internal_error_inconsistent_n_bits); - goto exit; - } - - ok: - self->private_impl.p_decode_huffman_slow[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_huffman_slow[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_data.s_decode_huffman_slow[0].v_bits = v_bits; - self->private_data.s_decode_huffman_slow[0].v_n_bits = v_n_bits; - self->private_data.s_decode_huffman_slow[0].v_table_entry_n_bits = v_table_entry_n_bits; - self->private_data.s_decode_huffman_slow[0].v_lmask = v_lmask; - self->private_data.s_decode_huffman_slow[0].v_dmask = v_dmask; - self->private_data.s_decode_huffman_slow[0].v_redir_top = v_redir_top; - self->private_data.s_decode_huffman_slow[0].v_redir_mask = v_redir_mask; - self->private_data.s_decode_huffman_slow[0].v_length = v_length; - self->private_data.s_decode_huffman_slow[0].v_dist_minus_1 = v_dist_minus_1; - - goto exit; - exit: - if (a_dst && a_dst->data.ptr) { - a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); - } - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__DEFLATE) - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__LZW) - -// ---------------- Status Codes Implementations - -const char wuffs_lzw__error__bad_code[] = "#lzw: bad code"; -const char wuffs_lzw__error__truncated_input[] = "#lzw: truncated input"; -const char wuffs_lzw__error__internal_error_inconsistent_i_o[] = "#lzw: internal error: inconsistent I/O"; - -// ---------------- Private Consts - -#define WUFFS_LZW__QUIRKS_BASE 1348378624 - -// ---------------- Private Initializer Prototypes - -// ---------------- Private Function Prototypes - -static wuffs_base__empty_struct -wuffs_lzw__decoder__read_from( - wuffs_lzw__decoder* self, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_lzw__decoder__write_to( - wuffs_lzw__decoder* self, - wuffs_base__io_buffer* a_dst); - -// ---------------- VTables - -const wuffs_base__io_transformer__func_ptrs -wuffs_lzw__decoder__func_ptrs_for__wuffs_base__io_transformer = { - (wuffs_base__status(*)(void*, - uint32_t, - uint64_t))(&wuffs_lzw__decoder__set_quirk), - (wuffs_base__status(*)(void*, - wuffs_base__io_buffer*, - wuffs_base__io_buffer*, - wuffs_base__slice_u8))(&wuffs_lzw__decoder__transform_io), - (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_lzw__decoder__workbuf_len), -}; - -// ---------------- Initializer Implementations - -wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT -wuffs_lzw__decoder__initialize( - wuffs_lzw__decoder* self, - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options){ - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (sizeof(*self) != sizeof_star_self) { - return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver); - } - if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) || - (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) { - return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version); - } - - if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) { - // The whole point of this if-check is to detect an uninitialized *self. - // We disable the warning on GCC. Clang-5.0 does not have this warning. -#if !defined(__clang__) && defined(__GNUC__) -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wmaybe-uninitialized" -#endif - if (self->private_impl.magic != 0) { - return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed); - } -#if !defined(__clang__) && defined(__GNUC__) -#pragma GCC diagnostic pop -#endif - } else { - if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) { - memset(self, 0, sizeof(*self)); - options |= WUFFS_INITIALIZE__ALREADY_ZEROED; - } else { - memset(&(self->private_impl), 0, sizeof(self->private_impl)); - } - } - - self->private_impl.magic = WUFFS_BASE__MAGIC; - self->private_impl.vtable_for__wuffs_base__io_transformer.vtable_name = - wuffs_base__io_transformer__vtable_name; - self->private_impl.vtable_for__wuffs_base__io_transformer.function_pointers = - (const void*)(&wuffs_lzw__decoder__func_ptrs_for__wuffs_base__io_transformer); - return wuffs_base__make_status(NULL); -} - -wuffs_lzw__decoder* -wuffs_lzw__decoder__alloc() { - wuffs_lzw__decoder* x = - (wuffs_lzw__decoder*)(calloc(sizeof(wuffs_lzw__decoder), 1)); - if (!x) { - return NULL; - } - if (wuffs_lzw__decoder__initialize( - x, sizeof(wuffs_lzw__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) { - free(x); - return NULL; - } - return x; -} - -size_t -sizeof__wuffs_lzw__decoder() { - return sizeof(wuffs_lzw__decoder); -} - -// ---------------- Function Implementations - -// -------- func lzw.decoder.set_quirk - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_lzw__decoder__set_quirk( - wuffs_lzw__decoder* self, - uint32_t a_key, - uint64_t a_value) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - - if (a_key == 1348378624) { - if (a_value > 9) { - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - self->private_impl.f_pending_literal_width_plus_one = ((uint32_t)(a_value)); - return wuffs_base__make_status(NULL); - } - return wuffs_base__make_status(wuffs_base__error__unsupported_option); -} - -// -------- func lzw.decoder.workbuf_len - -WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 -wuffs_lzw__decoder__workbuf_len( - const wuffs_lzw__decoder* self) { - if (!self) { - return wuffs_base__utility__empty_range_ii_u64(); - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return wuffs_base__utility__empty_range_ii_u64(); - } - - return wuffs_base__utility__make_range_ii_u64(0, 0); -} - -// -------- func lzw.decoder.transform_io - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_lzw__decoder__transform_io( - wuffs_lzw__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__slice_u8 a_workbuf) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - if (!a_dst || !a_src) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - if ((self->private_impl.active_coroutine != 0) && - (self->private_impl.active_coroutine != 1)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); - } - self->private_impl.active_coroutine = 0; - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint32_t v_i = 0; - - uint32_t coro_susp_point = self->private_impl.p_transform_io[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - self->private_impl.f_literal_width = 8; - if (self->private_impl.f_pending_literal_width_plus_one > 0) { - self->private_impl.f_literal_width = (self->private_impl.f_pending_literal_width_plus_one - 1); - } - self->private_impl.f_clear_code = (((uint32_t)(1)) << self->private_impl.f_literal_width); - self->private_impl.f_end_code = (self->private_impl.f_clear_code + 1); - self->private_impl.f_save_code = self->private_impl.f_end_code; - self->private_impl.f_prev_code = self->private_impl.f_end_code; - self->private_impl.f_width = (self->private_impl.f_literal_width + 1); - self->private_impl.f_bits = 0; - self->private_impl.f_n_bits = 0; - self->private_impl.f_output_ri = 0; - self->private_impl.f_output_wi = 0; - v_i = 0; - while (v_i < self->private_impl.f_clear_code) { - self->private_data.f_lm1s[v_i] = 0; - self->private_data.f_suffixes[v_i][0] = ((uint8_t)(v_i)); - v_i += 1; - } - label__0__continue:; - while (true) { - wuffs_lzw__decoder__read_from(self, a_src); - if (self->private_impl.f_output_wi > 0) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - status = wuffs_lzw__decoder__write_to(self, a_dst); - if (status.repr) { - goto suspend; - } - } - if (self->private_impl.f_read_from_return_value == 0) { - goto label__0__break; - } else if (self->private_impl.f_read_from_return_value == 1) { - goto label__0__continue; - } else if (self->private_impl.f_read_from_return_value == 2) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2); - } else if (self->private_impl.f_read_from_return_value == 3) { - status = wuffs_base__make_status(wuffs_lzw__error__truncated_input); - goto exit; - } else if (self->private_impl.f_read_from_return_value == 4) { - status = wuffs_base__make_status(wuffs_lzw__error__bad_code); - goto exit; - } else { - status = wuffs_base__make_status(wuffs_lzw__error__internal_error_inconsistent_i_o); - goto exit; - } - } - label__0__break:; - - ok: - self->private_impl.p_transform_io[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_transform_io[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0; - - goto exit; - exit: - if (wuffs_base__status__is_error(&status)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - } - return status; -} - -// -------- func lzw.decoder.read_from - -static wuffs_base__empty_struct -wuffs_lzw__decoder__read_from( - wuffs_lzw__decoder* self, - wuffs_base__io_buffer* a_src) { - uint32_t v_clear_code = 0; - uint32_t v_end_code = 0; - uint32_t v_save_code = 0; - uint32_t v_prev_code = 0; - uint32_t v_width = 0; - uint32_t v_bits = 0; - uint32_t v_n_bits = 0; - uint32_t v_output_wi = 0; - uint32_t v_code = 0; - uint32_t v_c = 0; - uint32_t v_o = 0; - uint32_t v_steps = 0; - uint8_t v_first_byte = 0; - uint16_t v_lm1_b = 0; - uint16_t v_lm1_a = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - v_clear_code = self->private_impl.f_clear_code; - v_end_code = self->private_impl.f_end_code; - v_save_code = self->private_impl.f_save_code; - v_prev_code = self->private_impl.f_prev_code; - v_width = self->private_impl.f_width; - v_bits = self->private_impl.f_bits; - v_n_bits = self->private_impl.f_n_bits; - v_output_wi = self->private_impl.f_output_wi; - while (true) { - if (v_n_bits < v_width) { - if (((uint64_t)(io2_a_src - iop_a_src)) >= 4) { - v_bits |= ((uint32_t)(wuffs_base__peek_u32le__no_bounds_check(iop_a_src) << v_n_bits)); - iop_a_src += ((31 - v_n_bits) >> 3); - v_n_bits |= 24; - } else if (((uint64_t)(io2_a_src - iop_a_src)) <= 0) { - if (a_src && a_src->meta.closed) { - self->private_impl.f_read_from_return_value = 3; - } else { - self->private_impl.f_read_from_return_value = 2; - } - goto label__0__break; - } else { - v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits); - iop_a_src += 1; - v_n_bits += 8; - if (v_n_bits >= v_width) { - } else if (((uint64_t)(io2_a_src - iop_a_src)) <= 0) { - if (a_src && a_src->meta.closed) { - self->private_impl.f_read_from_return_value = 3; - } else { - self->private_impl.f_read_from_return_value = 2; - } - goto label__0__break; - } else { - v_bits |= (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) << v_n_bits); - iop_a_src += 1; - v_n_bits += 8; - if (v_n_bits < v_width) { - self->private_impl.f_read_from_return_value = 5; - goto label__0__break; - } - } - } - } - v_code = ((v_bits) & WUFFS_BASE__LOW_BITS_MASK__U32(v_width)); - v_bits >>= v_width; - v_n_bits -= v_width; - if (v_code < v_clear_code) { - self->private_data.f_output[v_output_wi] = ((uint8_t)(v_code)); - v_output_wi = ((v_output_wi + 1) & 8191); - if (v_save_code <= 4095) { - v_lm1_a = (((uint16_t)(self->private_data.f_lm1s[v_prev_code] + 1)) & 4095); - self->private_data.f_lm1s[v_save_code] = v_lm1_a; - if ((v_lm1_a % 8) != 0) { - self->private_impl.f_prefixes[v_save_code] = self->private_impl.f_prefixes[v_prev_code]; - memcpy(self->private_data.f_suffixes[v_save_code],self->private_data.f_suffixes[v_prev_code], sizeof(self->private_data.f_suffixes[v_save_code])); - self->private_data.f_suffixes[v_save_code][(v_lm1_a % 8)] = ((uint8_t)(v_code)); - } else { - self->private_impl.f_prefixes[v_save_code] = ((uint16_t)(v_prev_code)); - self->private_data.f_suffixes[v_save_code][0] = ((uint8_t)(v_code)); - } - v_save_code += 1; - if (v_width < 12) { - v_width += (1 & (v_save_code >> v_width)); - } - v_prev_code = v_code; - } - } else if (v_code <= v_end_code) { - if (v_code == v_end_code) { - self->private_impl.f_read_from_return_value = 0; - goto label__0__break; - } - v_save_code = v_end_code; - v_prev_code = v_end_code; - v_width = (self->private_impl.f_literal_width + 1); - } else if (v_code <= v_save_code) { - v_c = v_code; - if (v_code == v_save_code) { - v_c = v_prev_code; - } - v_o = ((v_output_wi + (((uint32_t)(self->private_data.f_lm1s[v_c])) & 4294967288)) & 8191); - v_output_wi = ((v_output_wi + 1 + ((uint32_t)(self->private_data.f_lm1s[v_c]))) & 8191); - v_steps = (((uint32_t)(self->private_data.f_lm1s[v_c])) >> 3); - while (true) { - memcpy((self->private_data.f_output)+(v_o), (self->private_data.f_suffixes[v_c]), 8); - if (v_steps <= 0) { - goto label__1__break; - } - v_steps -= 1; - v_o = (((uint32_t)(v_o - 8)) & 8191); - v_c = ((uint32_t)(self->private_impl.f_prefixes[v_c])); - } - label__1__break:; - v_first_byte = self->private_data.f_suffixes[v_c][0]; - if (v_code == v_save_code) { - self->private_data.f_output[v_output_wi] = v_first_byte; - v_output_wi = ((v_output_wi + 1) & 8191); - } - if (v_save_code <= 4095) { - v_lm1_b = (((uint16_t)(self->private_data.f_lm1s[v_prev_code] + 1)) & 4095); - self->private_data.f_lm1s[v_save_code] = v_lm1_b; - if ((v_lm1_b % 8) != 0) { - self->private_impl.f_prefixes[v_save_code] = self->private_impl.f_prefixes[v_prev_code]; - memcpy(self->private_data.f_suffixes[v_save_code],self->private_data.f_suffixes[v_prev_code], sizeof(self->private_data.f_suffixes[v_save_code])); - self->private_data.f_suffixes[v_save_code][(v_lm1_b % 8)] = v_first_byte; - } else { - self->private_impl.f_prefixes[v_save_code] = ((uint16_t)(v_prev_code)); - self->private_data.f_suffixes[v_save_code][0] = ((uint8_t)(v_first_byte)); - } - v_save_code += 1; - if (v_width < 12) { - v_width += (1 & (v_save_code >> v_width)); - } - v_prev_code = v_code; - } - } else { - self->private_impl.f_read_from_return_value = 4; - goto label__0__break; - } - if (v_output_wi > 4095) { - self->private_impl.f_read_from_return_value = 1; - goto label__0__break; - } - } - label__0__break:; - if (self->private_impl.f_read_from_return_value != 2) { - while (v_n_bits >= 8) { - v_n_bits -= 8; - if (iop_a_src > io1_a_src) { - iop_a_src--; - } else { - self->private_impl.f_read_from_return_value = 5; - goto label__2__break; - } - } - label__2__break:; - } - self->private_impl.f_save_code = v_save_code; - self->private_impl.f_prev_code = v_prev_code; - self->private_impl.f_width = v_width; - self->private_impl.f_bits = v_bits; - self->private_impl.f_n_bits = v_n_bits; - self->private_impl.f_output_wi = v_output_wi; - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return wuffs_base__make_empty_struct(); -} - -// -------- func lzw.decoder.write_to - -static wuffs_base__status -wuffs_lzw__decoder__write_to( - wuffs_lzw__decoder* self, - wuffs_base__io_buffer* a_dst) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - wuffs_base__slice_u8 v_s = {0}; - uint64_t v_n = 0; - - uint8_t* iop_a_dst = NULL; - uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_dst && a_dst->data.ptr) { - io0_a_dst = a_dst->data.ptr; - io1_a_dst = io0_a_dst + a_dst->meta.wi; - iop_a_dst = io1_a_dst; - io2_a_dst = io0_a_dst + a_dst->data.len; - if (a_dst->meta.closed) { - io2_a_dst = iop_a_dst; - } - } - - uint32_t coro_susp_point = self->private_impl.p_write_to[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - while (self->private_impl.f_output_wi > 0) { - if (self->private_impl.f_output_ri > self->private_impl.f_output_wi) { - status = wuffs_base__make_status(wuffs_lzw__error__internal_error_inconsistent_i_o); - goto exit; - } - v_s = wuffs_base__make_slice_u8_ij(self->private_data.f_output, - self->private_impl.f_output_ri, - self->private_impl.f_output_wi); - v_n = wuffs_base__io_writer__copy_from_slice(&iop_a_dst, io2_a_dst,v_s); - if (v_n == ((uint64_t)(v_s.len))) { - self->private_impl.f_output_ri = 0; - self->private_impl.f_output_wi = 0; - status = wuffs_base__make_status(NULL); - goto ok; - } - self->private_impl.f_output_ri = (((uint32_t)(self->private_impl.f_output_ri + ((uint32_t)((v_n & 4294967295))))) & 8191); - status = wuffs_base__make_status(wuffs_base__suspension__short_write); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); - } - - ok: - self->private_impl.p_write_to[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_write_to[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - - goto exit; - exit: - if (a_dst && a_dst->data.ptr) { - a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); - } - - return status; -} - -// -------- func lzw.decoder.flush - -WUFFS_BASE__MAYBE_STATIC wuffs_base__slice_u8 -wuffs_lzw__decoder__flush( - wuffs_lzw__decoder* self) { - if (!self) { - return wuffs_base__make_slice_u8(NULL, 0); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_slice_u8(NULL, 0); - } - - wuffs_base__slice_u8 v_s = {0}; - - if (self->private_impl.f_output_ri <= self->private_impl.f_output_wi) { - v_s = wuffs_base__make_slice_u8_ij(self->private_data.f_output, - self->private_impl.f_output_ri, - self->private_impl.f_output_wi); - } - self->private_impl.f_output_ri = 0; - self->private_impl.f_output_wi = 0; - return v_s; -} - -#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__LZW) - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__GIF) - -// ---------------- Status Codes Implementations - -const char wuffs_gif__error__bad_extension_label[] = "#gif: bad extension label"; -const char wuffs_gif__error__bad_frame_size[] = "#gif: bad frame size"; -const char wuffs_gif__error__bad_graphic_control[] = "#gif: bad graphic control"; -const char wuffs_gif__error__bad_header[] = "#gif: bad header"; -const char wuffs_gif__error__bad_literal_width[] = "#gif: bad literal width"; -const char wuffs_gif__error__bad_palette[] = "#gif: bad palette"; -const char wuffs_gif__error__truncated_input[] = "#gif: truncated input"; -const char wuffs_gif__error__internal_error_inconsistent_ri_wi[] = "#gif: internal error: inconsistent ri/wi"; - -// ---------------- Private Consts - -static const uint32_t -WUFFS_GIF__INTERLACE_START[5] WUFFS_BASE__POTENTIALLY_UNUSED = { - 4294967295, 1, 2, 4, 0, -}; - -static const uint8_t -WUFFS_GIF__INTERLACE_DELTA[5] WUFFS_BASE__POTENTIALLY_UNUSED = { - 1, 2, 4, 8, 8, -}; - -static const uint8_t -WUFFS_GIF__INTERLACE_COUNT[5] WUFFS_BASE__POTENTIALLY_UNUSED = { - 0, 1, 2, 4, 8, -}; - -static const uint8_t -WUFFS_GIF__ANIMEXTS1DOT0[11] WUFFS_BASE__POTENTIALLY_UNUSED = { - 65, 78, 73, 77, 69, 88, 84, 83, - 49, 46, 48, -}; - -static const uint8_t -WUFFS_GIF__NETSCAPE2DOT0[11] WUFFS_BASE__POTENTIALLY_UNUSED = { - 78, 69, 84, 83, 67, 65, 80, 69, - 50, 46, 48, -}; - -static const uint8_t -WUFFS_GIF__ICCRGBG1012[11] WUFFS_BASE__POTENTIALLY_UNUSED = { - 73, 67, 67, 82, 71, 66, 71, 49, - 48, 49, 50, -}; - -static const uint8_t -WUFFS_GIF__XMPDATAXMP[11] WUFFS_BASE__POTENTIALLY_UNUSED = { - 88, 77, 80, 32, 68, 97, 116, 97, - 88, 77, 80, -}; - -#define WUFFS_GIF__QUIRKS_BASE 1041635328 - -#define WUFFS_GIF__QUIRKS_COUNT 7 - -// ---------------- Private Initializer Prototypes - -// ---------------- Private Function Prototypes - -static wuffs_base__status -wuffs_gif__decoder__do_decode_image_config( - wuffs_gif__decoder* self, - wuffs_base__image_config* a_dst, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_gif__decoder__do_tell_me_more( - wuffs_gif__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__more_information* a_minfo, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_gif__decoder__do_decode_frame_config( - wuffs_gif__decoder* self, - wuffs_base__frame_config* a_dst, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_gif__decoder__skip_frame( - wuffs_gif__decoder* self, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_gif__decoder__do_decode_frame( - wuffs_gif__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__pixel_blend a_blend, - wuffs_base__slice_u8 a_workbuf, - wuffs_base__decode_frame_options* a_opts); - -static wuffs_base__empty_struct -wuffs_gif__decoder__reset_gc( - wuffs_gif__decoder* self); - -static wuffs_base__status -wuffs_gif__decoder__decode_up_to_id_part1( - wuffs_gif__decoder* self, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_gif__decoder__decode_header( - wuffs_gif__decoder* self, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_gif__decoder__decode_lsd( - wuffs_gif__decoder* self, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_gif__decoder__decode_extension( - wuffs_gif__decoder* self, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_gif__decoder__skip_blocks( - wuffs_gif__decoder* self, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_gif__decoder__decode_ae( - wuffs_gif__decoder* self, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_gif__decoder__decode_gc( - wuffs_gif__decoder* self, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_gif__decoder__decode_id_part0( - wuffs_gif__decoder* self, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_gif__decoder__decode_id_part1( - wuffs_gif__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__pixel_blend a_blend); - -static wuffs_base__status -wuffs_gif__decoder__decode_id_part2( - wuffs_gif__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__slice_u8 a_workbuf); - -static wuffs_base__status -wuffs_gif__decoder__copy_to_image_buffer( - wuffs_gif__decoder* self, - wuffs_base__pixel_buffer* a_pb, - wuffs_base__slice_u8 a_src); - -// ---------------- VTables - -const wuffs_base__image_decoder__func_ptrs -wuffs_gif__decoder__func_ptrs_for__wuffs_base__image_decoder = { - (wuffs_base__status(*)(void*, - wuffs_base__pixel_buffer*, - wuffs_base__io_buffer*, - wuffs_base__pixel_blend, - wuffs_base__slice_u8, - wuffs_base__decode_frame_options*))(&wuffs_gif__decoder__decode_frame), - (wuffs_base__status(*)(void*, - wuffs_base__frame_config*, - wuffs_base__io_buffer*))(&wuffs_gif__decoder__decode_frame_config), - (wuffs_base__status(*)(void*, - wuffs_base__image_config*, - wuffs_base__io_buffer*))(&wuffs_gif__decoder__decode_image_config), - (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_gif__decoder__frame_dirty_rect), - (uint32_t(*)(const void*))(&wuffs_gif__decoder__num_animation_loops), - (uint64_t(*)(const void*))(&wuffs_gif__decoder__num_decoded_frame_configs), - (uint64_t(*)(const void*))(&wuffs_gif__decoder__num_decoded_frames), - (wuffs_base__status(*)(void*, - uint64_t, - uint64_t))(&wuffs_gif__decoder__restart_frame), - (wuffs_base__status(*)(void*, - uint32_t, - uint64_t))(&wuffs_gif__decoder__set_quirk), - (wuffs_base__empty_struct(*)(void*, - uint32_t, - bool))(&wuffs_gif__decoder__set_report_metadata), - (wuffs_base__status(*)(void*, - wuffs_base__io_buffer*, - wuffs_base__more_information*, - wuffs_base__io_buffer*))(&wuffs_gif__decoder__tell_me_more), - (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_gif__decoder__workbuf_len), -}; - -// ---------------- Initializer Implementations - -wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT -wuffs_gif__decoder__initialize( - wuffs_gif__decoder* self, - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options){ - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (sizeof(*self) != sizeof_star_self) { - return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver); - } - if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) || - (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) { - return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version); - } - - if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) { - // The whole point of this if-check is to detect an uninitialized *self. - // We disable the warning on GCC. Clang-5.0 does not have this warning. -#if !defined(__clang__) && defined(__GNUC__) -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wmaybe-uninitialized" -#endif - if (self->private_impl.magic != 0) { - return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed); - } -#if !defined(__clang__) && defined(__GNUC__) -#pragma GCC diagnostic pop -#endif - } else { - if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) { - memset(self, 0, sizeof(*self)); - options |= WUFFS_INITIALIZE__ALREADY_ZEROED; - } else { - memset(&(self->private_impl), 0, sizeof(self->private_impl)); - } - } - - { - wuffs_base__status z = wuffs_lzw__decoder__initialize( - &self->private_data.f_lzw, sizeof(self->private_data.f_lzw), WUFFS_VERSION, options); - if (z.repr) { - return z; - } - } - self->private_impl.magic = WUFFS_BASE__MAGIC; - self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name = - wuffs_base__image_decoder__vtable_name; - self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers = - (const void*)(&wuffs_gif__decoder__func_ptrs_for__wuffs_base__image_decoder); - return wuffs_base__make_status(NULL); -} - -wuffs_gif__decoder* -wuffs_gif__decoder__alloc() { - wuffs_gif__decoder* x = - (wuffs_gif__decoder*)(calloc(sizeof(wuffs_gif__decoder), 1)); - if (!x) { - return NULL; - } - if (wuffs_gif__decoder__initialize( - x, sizeof(wuffs_gif__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) { - free(x); - return NULL; - } - return x; -} - -size_t -sizeof__wuffs_gif__decoder() { - return sizeof(wuffs_gif__decoder); -} - -// ---------------- Function Implementations - -// -------- func gif.decoder.set_quirk - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_gif__decoder__set_quirk( - wuffs_gif__decoder* self, - uint32_t a_key, - uint64_t a_value) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - - if ((self->private_impl.f_call_sequence == 0) && (a_key >= 1041635328)) { - a_key -= 1041635328; - if (a_key < 7) { - self->private_impl.f_quirks[a_key] = (a_value > 0); - return wuffs_base__make_status(NULL); - } - } - return wuffs_base__make_status(wuffs_base__error__unsupported_option); -} - -// -------- func gif.decoder.decode_image_config - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_gif__decoder__decode_image_config( - wuffs_gif__decoder* self, - wuffs_base__image_config* a_dst, - wuffs_base__io_buffer* a_src) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - if (!a_src) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - if ((self->private_impl.active_coroutine != 0) && - (self->private_impl.active_coroutine != 1)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); - } - self->private_impl.active_coroutine = 0; - wuffs_base__status status = wuffs_base__make_status(NULL); - - wuffs_base__status v_status = wuffs_base__make_status(NULL); - - uint32_t coro_susp_point = self->private_impl.p_decode_image_config[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - while (true) { - { - wuffs_base__status t_0 = wuffs_gif__decoder__do_decode_image_config(self, a_dst, a_src); - v_status = t_0; - } - if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { - status = wuffs_base__make_status(wuffs_gif__error__truncated_input); - goto exit; - } - status = v_status; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); - } - - ok: - self->private_impl.p_decode_image_config[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0; - - goto exit; - exit: - if (wuffs_base__status__is_error(&status)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - } - return status; -} - -// -------- func gif.decoder.do_decode_image_config - -static wuffs_base__status -wuffs_gif__decoder__do_decode_image_config( - wuffs_gif__decoder* self, - wuffs_base__image_config* a_dst, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - bool v_ffio = false; - - uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - if (self->private_impl.f_call_sequence != 0) { - status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence); - goto exit; - } else if ( ! self->private_impl.f_seen_header) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - status = wuffs_gif__decoder__decode_header(self, a_src); - if (status.repr) { - goto suspend; - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - status = wuffs_gif__decoder__decode_lsd(self, a_src); - if (status.repr) { - goto suspend; - } - self->private_impl.f_seen_header = true; - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); - status = wuffs_gif__decoder__decode_up_to_id_part1(self, a_src); - if (status.repr) { - goto suspend; - } - v_ffio = ! self->private_impl.f_gc_has_transparent_index; - if ( ! self->private_impl.f_quirks[2]) { - v_ffio = (v_ffio && - (self->private_impl.f_frame_rect_x0 == 0) && - (self->private_impl.f_frame_rect_y0 == 0) && - (self->private_impl.f_frame_rect_x1 == self->private_impl.f_width) && - (self->private_impl.f_frame_rect_y1 == self->private_impl.f_height)); - } else if (v_ffio) { - self->private_impl.f_black_color_u32_argb_premul = 4278190080; - } - if (self->private_impl.f_background_color_u32_argb_premul == 77) { - self->private_impl.f_background_color_u32_argb_premul = self->private_impl.f_black_color_u32_argb_premul; - } - if (a_dst != NULL) { - wuffs_base__image_config__set( - a_dst, - 2198077448, - 0, - self->private_impl.f_width, - self->private_impl.f_height, - self->private_impl.f_frame_config_io_position, - v_ffio); - } - if (self->private_impl.f_call_sequence == 0) { - self->private_impl.f_call_sequence = 32; - } - - goto ok; - ok: - self->private_impl.p_do_decode_image_config[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_do_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - - goto exit; - exit: - return status; -} - -// -------- func gif.decoder.set_report_metadata - -WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct -wuffs_gif__decoder__set_report_metadata( - wuffs_gif__decoder* self, - uint32_t a_fourcc, - bool a_report) { - if (!self) { - return wuffs_base__make_empty_struct(); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_empty_struct(); - } - - if (a_fourcc == 1229144912) { - self->private_impl.f_report_metadata_iccp = a_report; - } else if (a_fourcc == 1481461792) { - self->private_impl.f_report_metadata_xmp = a_report; - } - return wuffs_base__make_empty_struct(); -} - -// -------- func gif.decoder.tell_me_more - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_gif__decoder__tell_me_more( - wuffs_gif__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__more_information* a_minfo, - wuffs_base__io_buffer* a_src) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - if (!a_dst || !a_src) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - if ((self->private_impl.active_coroutine != 0) && - (self->private_impl.active_coroutine != 2)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); - } - self->private_impl.active_coroutine = 0; - wuffs_base__status status = wuffs_base__make_status(NULL); - - wuffs_base__status v_status = wuffs_base__make_status(NULL); - - uint32_t coro_susp_point = self->private_impl.p_tell_me_more[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - while (true) { - { - wuffs_base__status t_0 = wuffs_gif__decoder__do_tell_me_more(self, a_dst, a_minfo, a_src); - v_status = t_0; - } - if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { - status = wuffs_base__make_status(wuffs_gif__error__truncated_input); - goto exit; - } - status = v_status; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); - } - - ok: - self->private_impl.p_tell_me_more[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_tell_me_more[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0; - - goto exit; - exit: - if (wuffs_base__status__is_error(&status)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - } - return status; -} - -// -------- func gif.decoder.do_tell_me_more - -static wuffs_base__status -wuffs_gif__decoder__do_tell_me_more( - wuffs_gif__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__more_information* a_minfo, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint64_t v_chunk_length = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_do_tell_me_more[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - if ((self->private_impl.f_call_sequence & 16) == 0) { - status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence); - goto exit; - } - if (self->private_impl.f_metadata_fourcc == 0) { - status = wuffs_base__make_status(wuffs_base__error__no_more_information); - goto exit; - } - while (true) { - label__0__continue:; - while (true) { - if (wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))) != self->private_impl.f_metadata_io_position) { - if (a_minfo != NULL) { - wuffs_base__more_information__set(a_minfo, - 2, - 0, - self->private_impl.f_metadata_io_position, - 0, - 0); - } - status = wuffs_base__make_status(wuffs_base__suspension__mispositioned_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); - goto label__0__continue; - } - if (((uint64_t)(io2_a_src - iop_a_src)) <= 0) { - if (a_minfo != NULL) { - wuffs_base__more_information__set(a_minfo, - 0, - 0, - 0, - 0, - 0); - } - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2); - goto label__0__continue; - } - goto label__0__break; - } - label__0__break:; - v_chunk_length = ((uint64_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))); - if (v_chunk_length <= 0) { - iop_a_src += 1; - goto label__1__break; - } - if (self->private_impl.f_metadata_fourcc == 1481461792) { - v_chunk_length += 1; - } else { - iop_a_src += 1; - } - self->private_impl.f_metadata_io_position = wuffs_base__u64__sat_add(wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))), v_chunk_length); - if (a_minfo != NULL) { - wuffs_base__more_information__set(a_minfo, - 3, - self->private_impl.f_metadata_fourcc, - 0, - wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))), - self->private_impl.f_metadata_io_position); - } - status = wuffs_base__make_status(wuffs_base__suspension__even_more_information); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3); - } - label__1__break:; - if (a_minfo != NULL) { - wuffs_base__more_information__set(a_minfo, - 3, - self->private_impl.f_metadata_fourcc, - 0, - self->private_impl.f_metadata_io_position, - self->private_impl.f_metadata_io_position); - } - self->private_impl.f_call_sequence &= 239; - self->private_impl.f_metadata_fourcc = 0; - self->private_impl.f_metadata_io_position = 0; - status = wuffs_base__make_status(NULL); - goto ok; - - ok: - self->private_impl.p_do_tell_me_more[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_do_tell_me_more[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func gif.decoder.num_animation_loops - -WUFFS_BASE__MAYBE_STATIC uint32_t -wuffs_gif__decoder__num_animation_loops( - const wuffs_gif__decoder* self) { - if (!self) { - return 0; - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return 0; - } - - if (self->private_impl.f_seen_num_animation_loops_value) { - return self->private_impl.f_num_animation_loops_value; - } - if (self->private_impl.f_num_decoded_frame_configs_value > 1) { - return 1; - } - return 0; -} - -// -------- func gif.decoder.num_decoded_frame_configs - -WUFFS_BASE__MAYBE_STATIC uint64_t -wuffs_gif__decoder__num_decoded_frame_configs( - const wuffs_gif__decoder* self) { - if (!self) { - return 0; - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return 0; - } - - return self->private_impl.f_num_decoded_frame_configs_value; -} - -// -------- func gif.decoder.num_decoded_frames - -WUFFS_BASE__MAYBE_STATIC uint64_t -wuffs_gif__decoder__num_decoded_frames( - const wuffs_gif__decoder* self) { - if (!self) { - return 0; - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return 0; - } - - return self->private_impl.f_num_decoded_frames_value; -} - -// -------- func gif.decoder.frame_dirty_rect - -WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32 -wuffs_gif__decoder__frame_dirty_rect( - const wuffs_gif__decoder* self) { - if (!self) { - return wuffs_base__utility__empty_rect_ie_u32(); - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return wuffs_base__utility__empty_rect_ie_u32(); - } - - return wuffs_base__utility__make_rect_ie_u32( - wuffs_base__u32__min(self->private_impl.f_frame_rect_x0, self->private_impl.f_width), - wuffs_base__u32__min(self->private_impl.f_frame_rect_y0, self->private_impl.f_height), - wuffs_base__u32__min(self->private_impl.f_frame_rect_x1, self->private_impl.f_width), - wuffs_base__u32__min(self->private_impl.f_dirty_max_excl_y, self->private_impl.f_height)); -} - -// -------- func gif.decoder.workbuf_len - -WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 -wuffs_gif__decoder__workbuf_len( - const wuffs_gif__decoder* self) { - if (!self) { - return wuffs_base__utility__empty_range_ii_u64(); - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return wuffs_base__utility__empty_range_ii_u64(); - } - - return wuffs_base__utility__make_range_ii_u64(0, 0); -} - -// -------- func gif.decoder.restart_frame - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_gif__decoder__restart_frame( - wuffs_gif__decoder* self, - uint64_t a_index, - uint64_t a_io_position) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - - if (self->private_impl.f_call_sequence < 32) { - return wuffs_base__make_status(wuffs_base__error__bad_call_sequence); - } else if (a_io_position == 0) { - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - self->private_impl.f_delayed_num_decoded_frames = false; - self->private_impl.f_frame_config_io_position = a_io_position; - self->private_impl.f_num_decoded_frame_configs_value = a_index; - self->private_impl.f_num_decoded_frames_value = a_index; - wuffs_gif__decoder__reset_gc(self); - self->private_impl.f_call_sequence = 40; - return wuffs_base__make_status(NULL); -} - -// -------- func gif.decoder.decode_frame_config - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_gif__decoder__decode_frame_config( - wuffs_gif__decoder* self, - wuffs_base__frame_config* a_dst, - wuffs_base__io_buffer* a_src) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - if (!a_src) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - if ((self->private_impl.active_coroutine != 0) && - (self->private_impl.active_coroutine != 3)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); - } - self->private_impl.active_coroutine = 0; - wuffs_base__status status = wuffs_base__make_status(NULL); - - wuffs_base__status v_status = wuffs_base__make_status(NULL); - - uint32_t coro_susp_point = self->private_impl.p_decode_frame_config[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - while (true) { - { - wuffs_base__status t_0 = wuffs_gif__decoder__do_decode_frame_config(self, a_dst, a_src); - v_status = t_0; - } - if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { - status = wuffs_base__make_status(wuffs_gif__error__truncated_input); - goto exit; - } - status = v_status; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); - } - - ok: - self->private_impl.p_decode_frame_config[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0; - - goto exit; - exit: - if (wuffs_base__status__is_error(&status)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - } - return status; -} - -// -------- func gif.decoder.do_decode_frame_config - -static wuffs_base__status -wuffs_gif__decoder__do_decode_frame_config( - wuffs_gif__decoder* self, - wuffs_base__frame_config* a_dst, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint32_t v_background_color = 0; - uint8_t v_flags = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config[0]; - if (coro_susp_point) { - v_background_color = self->private_data.s_do_decode_frame_config[0].v_background_color; - } - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - self->private_impl.f_dirty_max_excl_y = 0; - if ((self->private_impl.f_call_sequence & 16) != 0) { - status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence); - goto exit; - } else if (self->private_impl.f_call_sequence == 32) { - } else if (self->private_impl.f_call_sequence < 32) { - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - status = wuffs_gif__decoder__do_decode_image_config(self, NULL, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - } else if (self->private_impl.f_call_sequence == 40) { - if (self->private_impl.f_frame_config_io_position != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) { - status = wuffs_base__make_status(wuffs_base__error__bad_restart); - goto exit; - } - } else if (self->private_impl.f_call_sequence == 64) { - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - status = wuffs_gif__decoder__skip_frame(self, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - if (self->private_impl.f_call_sequence >= 96) { - status = wuffs_base__make_status(wuffs_base__note__end_of_data); - goto ok; - } - } else { - status = wuffs_base__make_status(wuffs_base__note__end_of_data); - goto ok; - } - if ((self->private_impl.f_num_decoded_frame_configs_value > 0) || (self->private_impl.f_call_sequence == 40)) { - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); - status = wuffs_gif__decoder__decode_up_to_id_part1(self, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - if (self->private_impl.f_call_sequence >= 96) { - status = wuffs_base__make_status(wuffs_base__note__end_of_data); - goto ok; - } - } - v_background_color = self->private_impl.f_black_color_u32_argb_premul; - if ( ! self->private_impl.f_gc_has_transparent_index) { - v_background_color = self->private_impl.f_background_color_u32_argb_premul; - if (self->private_impl.f_quirks[1] && (self->private_impl.f_num_decoded_frame_configs_value == 0)) { - while (((uint64_t)(io2_a_src - iop_a_src)) <= 0) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4); - } - v_flags = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); - if ((v_flags & 128) != 0) { - v_background_color = self->private_impl.f_black_color_u32_argb_premul; - } - } - } - if (a_dst != NULL) { - wuffs_base__frame_config__set( - a_dst, - wuffs_base__utility__make_rect_ie_u32( - wuffs_base__u32__min(self->private_impl.f_frame_rect_x0, self->private_impl.f_width), - wuffs_base__u32__min(self->private_impl.f_frame_rect_y0, self->private_impl.f_height), - wuffs_base__u32__min(self->private_impl.f_frame_rect_x1, self->private_impl.f_width), - wuffs_base__u32__min(self->private_impl.f_frame_rect_y1, self->private_impl.f_height)), - ((wuffs_base__flicks)(self->private_impl.f_gc_duration)), - self->private_impl.f_num_decoded_frame_configs_value, - self->private_impl.f_frame_config_io_position, - self->private_impl.f_gc_disposal, - ! self->private_impl.f_gc_has_transparent_index, - false, - v_background_color); - } - wuffs_base__u64__sat_add_indirect(&self->private_impl.f_num_decoded_frame_configs_value, 1); - self->private_impl.f_call_sequence = 64; - - ok: - self->private_impl.p_do_decode_frame_config[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_do_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_data.s_do_decode_frame_config[0].v_background_color = v_background_color; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func gif.decoder.skip_frame - -static wuffs_base__status -wuffs_gif__decoder__skip_frame( - wuffs_gif__decoder* self, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint8_t v_flags = 0; - uint8_t v_lw = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_skip_frame[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_0 = *iop_a_src++; - v_flags = t_0; - } - if ((v_flags & 128) != 0) { - self->private_data.s_skip_frame[0].scratch = (((uint32_t)(3)) << (1 + (v_flags & 7))); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - if (self->private_data.s_skip_frame[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { - self->private_data.s_skip_frame[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); - iop_a_src = io2_a_src; - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - iop_a_src += self->private_data.s_skip_frame[0].scratch; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_1 = *iop_a_src++; - v_lw = t_1; - } - if (v_lw > 8) { - status = wuffs_base__make_status(wuffs_gif__error__bad_literal_width); - goto exit; - } - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); - status = wuffs_gif__decoder__skip_blocks(self, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - if (self->private_impl.f_quirks[0]) { - self->private_impl.f_delayed_num_decoded_frames = true; - } else { - wuffs_base__u64__sat_add_indirect(&self->private_impl.f_num_decoded_frames_value, 1); - } - wuffs_gif__decoder__reset_gc(self); - self->private_impl.f_call_sequence = 32; - - goto ok; - ok: - self->private_impl.p_skip_frame[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_skip_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func gif.decoder.decode_frame - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_gif__decoder__decode_frame( - wuffs_gif__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__pixel_blend a_blend, - wuffs_base__slice_u8 a_workbuf, - wuffs_base__decode_frame_options* a_opts) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - if (!a_dst || !a_src) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - if ((self->private_impl.active_coroutine != 0) && - (self->private_impl.active_coroutine != 4)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); - } - self->private_impl.active_coroutine = 0; - wuffs_base__status status = wuffs_base__make_status(NULL); - - wuffs_base__status v_status = wuffs_base__make_status(NULL); - - uint32_t coro_susp_point = self->private_impl.p_decode_frame[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - while (true) { - { - wuffs_base__status t_0 = wuffs_gif__decoder__do_decode_frame(self, - a_dst, - a_src, - a_blend, - a_workbuf, - a_opts); - v_status = t_0; - } - if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { - status = wuffs_base__make_status(wuffs_gif__error__truncated_input); - goto exit; - } - status = v_status; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); - } - - ok: - self->private_impl.p_decode_frame[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 4 : 0; - - goto exit; - exit: - if (wuffs_base__status__is_error(&status)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - } - return status; -} - -// -------- func gif.decoder.do_decode_frame - -static wuffs_base__status -wuffs_gif__decoder__do_decode_frame( - wuffs_gif__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__pixel_blend a_blend, - wuffs_base__slice_u8 a_workbuf, - wuffs_base__decode_frame_options* a_opts) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint32_t coro_susp_point = self->private_impl.p_do_decode_frame[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - if (self->private_impl.f_call_sequence == 64) { - } else if (self->private_impl.f_call_sequence < 64) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - status = wuffs_gif__decoder__do_decode_frame_config(self, NULL, a_src); - if (status.repr) { - goto suspend; - } - } else { - status = wuffs_base__make_status(wuffs_base__note__end_of_data); - goto ok; - } - if (self->private_impl.f_quirks[5] && ((self->private_impl.f_frame_rect_x0 == self->private_impl.f_frame_rect_x1) || (self->private_impl.f_frame_rect_y0 == self->private_impl.f_frame_rect_y1))) { - status = wuffs_base__make_status(wuffs_gif__error__bad_frame_size); - goto exit; - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - status = wuffs_gif__decoder__decode_id_part1(self, a_dst, a_src, a_blend); - if (status.repr) { - goto suspend; - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); - status = wuffs_gif__decoder__decode_id_part2(self, a_dst, a_src, a_workbuf); - if (status.repr) { - goto suspend; - } - wuffs_base__u64__sat_add_indirect(&self->private_impl.f_num_decoded_frames_value, 1); - wuffs_gif__decoder__reset_gc(self); - self->private_impl.f_call_sequence = 32; - - ok: - self->private_impl.p_do_decode_frame[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_do_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - - goto exit; - exit: - return status; -} - -// -------- func gif.decoder.reset_gc - -static wuffs_base__empty_struct -wuffs_gif__decoder__reset_gc( - wuffs_gif__decoder* self) { - self->private_impl.f_gc_has_transparent_index = false; - self->private_impl.f_gc_transparent_index = 0; - self->private_impl.f_gc_disposal = 0; - self->private_impl.f_gc_duration = 0; - return wuffs_base__make_empty_struct(); -} - -// -------- func gif.decoder.decode_up_to_id_part1 - -static wuffs_base__status -wuffs_gif__decoder__decode_up_to_id_part1( - wuffs_gif__decoder* self, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint8_t v_block_type = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_decode_up_to_id_part1[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - if ((self->private_impl.f_frame_config_io_position == 0) || (self->private_impl.f_num_decoded_frame_configs_value > 0)) { - self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))); - } - while (true) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_0 = *iop_a_src++; - v_block_type = t_0; - } - if (v_block_type == 33) { - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - status = wuffs_gif__decoder__decode_extension(self, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - } else if (v_block_type == 44) { - if (self->private_impl.f_delayed_num_decoded_frames) { - self->private_impl.f_delayed_num_decoded_frames = false; - wuffs_base__u64__sat_add_indirect(&self->private_impl.f_num_decoded_frames_value, 1); - } - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); - status = wuffs_gif__decoder__decode_id_part0(self, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - goto label__0__break; - } else { - if (self->private_impl.f_delayed_num_decoded_frames) { - self->private_impl.f_delayed_num_decoded_frames = false; - wuffs_base__u64__sat_add_indirect(&self->private_impl.f_num_decoded_frames_value, 1); - } - self->private_impl.f_call_sequence = 96; - goto label__0__break; - } - } - label__0__break:; - - goto ok; - ok: - self->private_impl.p_decode_up_to_id_part1[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_up_to_id_part1[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func gif.decoder.decode_header - -static wuffs_base__status -wuffs_gif__decoder__decode_header( - wuffs_gif__decoder* self, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint8_t v_c[6] = {0}; - uint32_t v_i = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_decode_header[0]; - if (coro_susp_point) { - memcpy(v_c, self->private_data.s_decode_header[0].v_c, sizeof(v_c)); - v_i = self->private_data.s_decode_header[0].v_i; - } - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - while (v_i < 6) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_0 = *iop_a_src++; - v_c[v_i] = t_0; - } - v_i += 1; - } - if ((v_c[0] != 71) || - (v_c[1] != 73) || - (v_c[2] != 70) || - (v_c[3] != 56) || - ((v_c[4] != 55) && (v_c[4] != 57)) || - (v_c[5] != 97)) { - status = wuffs_base__make_status(wuffs_gif__error__bad_header); - goto exit; - } - - goto ok; - ok: - self->private_impl.p_decode_header[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_header[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - memcpy(self->private_data.s_decode_header[0].v_c, v_c, sizeof(v_c)); - self->private_data.s_decode_header[0].v_i = v_i; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func gif.decoder.decode_lsd - -static wuffs_base__status -wuffs_gif__decoder__decode_lsd( - wuffs_gif__decoder* self, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint8_t v_flags = 0; - uint8_t v_background_color_index = 0; - uint32_t v_num_palette_entries = 0; - uint32_t v_i = 0; - uint32_t v_j = 0; - uint32_t v_argb = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_decode_lsd[0]; - if (coro_susp_point) { - v_flags = self->private_data.s_decode_lsd[0].v_flags; - v_background_color_index = self->private_data.s_decode_lsd[0].v_background_color_index; - v_num_palette_entries = self->private_data.s_decode_lsd[0].v_num_palette_entries; - v_i = self->private_data.s_decode_lsd[0].v_i; - } - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - uint32_t t_0; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { - t_0 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src))); - iop_a_src += 2; - } else { - self->private_data.s_decode_lsd[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_decode_lsd[0].scratch; - uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0; - if (num_bits_0 == 8) { - t_0 = ((uint32_t)(*scratch)); - break; - } - num_bits_0 += 8; - *scratch |= ((uint64_t)(num_bits_0)) << 56; - } - } - self->private_impl.f_width = t_0; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); - uint32_t t_1; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { - t_1 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src))); - iop_a_src += 2; - } else { - self->private_data.s_decode_lsd[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_decode_lsd[0].scratch; - uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1; - if (num_bits_1 == 8) { - t_1 = ((uint32_t)(*scratch)); - break; - } - num_bits_1 += 8; - *scratch |= ((uint64_t)(num_bits_1)) << 56; - } - } - self->private_impl.f_height = t_1; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_2 = *iop_a_src++; - v_flags = t_2; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_3 = *iop_a_src++; - v_background_color_index = t_3; - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - iop_a_src++; - v_i = 0; - self->private_impl.f_has_global_palette = ((v_flags & 128) != 0); - if (self->private_impl.f_has_global_palette) { - v_num_palette_entries = (((uint32_t)(1)) << (1 + (v_flags & 7))); - while (v_i < v_num_palette_entries) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8); - uint32_t t_4; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 3)) { - t_4 = ((uint32_t)(wuffs_base__peek_u24be__no_bounds_check(iop_a_src))); - iop_a_src += 3; - } else { - self->private_data.s_decode_lsd[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_decode_lsd[0].scratch; - uint32_t num_bits_4 = ((uint32_t)(*scratch & 0xFF)); - *scratch >>= 8; - *scratch <<= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_4); - if (num_bits_4 == 16) { - t_4 = ((uint32_t)(*scratch >> 40)); - break; - } - num_bits_4 += 8; - *scratch |= ((uint64_t)(num_bits_4)); - } - } - v_argb = t_4; - } - v_argb |= 4278190080; - self->private_data.f_palettes[0][((4 * v_i) + 0)] = ((uint8_t)(((v_argb >> 0) & 255))); - self->private_data.f_palettes[0][((4 * v_i) + 1)] = ((uint8_t)(((v_argb >> 8) & 255))); - self->private_data.f_palettes[0][((4 * v_i) + 2)] = ((uint8_t)(((v_argb >> 16) & 255))); - self->private_data.f_palettes[0][((4 * v_i) + 3)] = ((uint8_t)(((v_argb >> 24) & 255))); - v_i += 1; - } - if (self->private_impl.f_quirks[2]) { - if ((v_background_color_index != 0) && (((uint32_t)(v_background_color_index)) < v_num_palette_entries)) { - v_j = (4 * ((uint32_t)(v_background_color_index))); - self->private_impl.f_background_color_u32_argb_premul = ((((uint32_t)(self->private_data.f_palettes[0][(v_j + 0)])) << 0) | - (((uint32_t)(self->private_data.f_palettes[0][(v_j + 1)])) << 8) | - (((uint32_t)(self->private_data.f_palettes[0][(v_j + 2)])) << 16) | - (((uint32_t)(self->private_data.f_palettes[0][(v_j + 3)])) << 24)); - } else { - self->private_impl.f_background_color_u32_argb_premul = 77; - } - } - } - while (v_i < 256) { - self->private_data.f_palettes[0][((4 * v_i) + 0)] = 0; - self->private_data.f_palettes[0][((4 * v_i) + 1)] = 0; - self->private_data.f_palettes[0][((4 * v_i) + 2)] = 0; - self->private_data.f_palettes[0][((4 * v_i) + 3)] = 255; - v_i += 1; - } - - goto ok; - ok: - self->private_impl.p_decode_lsd[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_lsd[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_data.s_decode_lsd[0].v_flags = v_flags; - self->private_data.s_decode_lsd[0].v_background_color_index = v_background_color_index; - self->private_data.s_decode_lsd[0].v_num_palette_entries = v_num_palette_entries; - self->private_data.s_decode_lsd[0].v_i = v_i; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func gif.decoder.decode_extension - -static wuffs_base__status -wuffs_gif__decoder__decode_extension( - wuffs_gif__decoder* self, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint8_t v_label = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_decode_extension[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_0 = *iop_a_src++; - v_label = t_0; - } - if (v_label == 249) { - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - status = wuffs_gif__decoder__decode_gc(self, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - status = wuffs_base__make_status(NULL); - goto ok; - } else if (v_label == 255) { - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); - status = wuffs_gif__decoder__decode_ae(self, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - status = wuffs_base__make_status(NULL); - goto ok; - } - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); - status = wuffs_gif__decoder__skip_blocks(self, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - - ok: - self->private_impl.p_decode_extension[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_extension[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func gif.decoder.skip_blocks - -static wuffs_base__status -wuffs_gif__decoder__skip_blocks( - wuffs_gif__decoder* self, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint8_t v_block_size = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_skip_blocks[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - while (true) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_0 = *iop_a_src++; - v_block_size = t_0; - } - if (v_block_size == 0) { - status = wuffs_base__make_status(NULL); - goto ok; - } - self->private_data.s_skip_blocks[0].scratch = ((uint32_t)(v_block_size)); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - if (self->private_data.s_skip_blocks[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { - self->private_data.s_skip_blocks[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); - iop_a_src = io2_a_src; - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - iop_a_src += self->private_data.s_skip_blocks[0].scratch; - } - - ok: - self->private_impl.p_skip_blocks[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_skip_blocks[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func gif.decoder.decode_ae - -static wuffs_base__status -wuffs_gif__decoder__decode_ae( - wuffs_gif__decoder* self, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint8_t v_c = 0; - uint8_t v_block_size = 0; - bool v_is_animexts = false; - bool v_is_netscape = false; - bool v_is_iccp = false; - bool v_is_xmp = false; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_decode_ae[0]; - if (coro_susp_point) { - v_block_size = self->private_data.s_decode_ae[0].v_block_size; - v_is_animexts = self->private_data.s_decode_ae[0].v_is_animexts; - v_is_netscape = self->private_data.s_decode_ae[0].v_is_netscape; - v_is_iccp = self->private_data.s_decode_ae[0].v_is_iccp; - v_is_xmp = self->private_data.s_decode_ae[0].v_is_xmp; - } - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - while (true) { - if (self->private_impl.f_metadata_fourcc != 0) { - status = wuffs_base__make_status(wuffs_base__note__metadata_reported); - goto ok; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_0 = *iop_a_src++; - v_block_size = t_0; - } - if (v_block_size == 0) { - status = wuffs_base__make_status(NULL); - goto ok; - } - if (v_block_size != 11) { - self->private_data.s_decode_ae[0].scratch = ((uint32_t)(v_block_size)); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - if (self->private_data.s_decode_ae[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { - self->private_data.s_decode_ae[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); - iop_a_src = io2_a_src; - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - iop_a_src += self->private_data.s_decode_ae[0].scratch; - goto label__goto_done__break; - } - v_is_animexts = true; - v_is_netscape = true; - v_is_iccp = true; - v_is_xmp = true; - v_block_size = 0; - while (v_block_size < 11) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_1 = *iop_a_src++; - v_c = t_1; - } - v_is_animexts = (v_is_animexts && (v_c == WUFFS_GIF__ANIMEXTS1DOT0[v_block_size])); - v_is_netscape = (v_is_netscape && (v_c == WUFFS_GIF__NETSCAPE2DOT0[v_block_size])); - v_is_iccp = (v_is_iccp && (v_c == WUFFS_GIF__ICCRGBG1012[v_block_size])); - v_is_xmp = (v_is_xmp && (v_c == WUFFS_GIF__XMPDATAXMP[v_block_size])); -#if defined(__GNUC__) -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wconversion" -#endif - v_block_size += 1; -#if defined(__GNUC__) -#pragma GCC diagnostic pop -#endif - } - if (v_is_animexts || v_is_netscape) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_2 = *iop_a_src++; - v_block_size = t_2; - } - if (v_block_size != 3) { - self->private_data.s_decode_ae[0].scratch = ((uint32_t)(v_block_size)); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); - if (self->private_data.s_decode_ae[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { - self->private_data.s_decode_ae[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); - iop_a_src = io2_a_src; - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - iop_a_src += self->private_data.s_decode_ae[0].scratch; - goto label__goto_done__break; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_3 = *iop_a_src++; - v_c = t_3; - } - if (v_c != 1) { - self->private_data.s_decode_ae[0].scratch = 2; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7); - if (self->private_data.s_decode_ae[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { - self->private_data.s_decode_ae[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); - iop_a_src = io2_a_src; - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - iop_a_src += self->private_data.s_decode_ae[0].scratch; - goto label__goto_done__break; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8); - uint32_t t_4; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { - t_4 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src))); - iop_a_src += 2; - } else { - self->private_data.s_decode_ae[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_decode_ae[0].scratch; - uint32_t num_bits_4 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_4; - if (num_bits_4 == 8) { - t_4 = ((uint32_t)(*scratch)); - break; - } - num_bits_4 += 8; - *scratch |= ((uint64_t)(num_bits_4)) << 56; - } - } - self->private_impl.f_num_animation_loops_value = t_4; - } - self->private_impl.f_seen_num_animation_loops_value = true; - if ((0 < self->private_impl.f_num_animation_loops_value) && (self->private_impl.f_num_animation_loops_value <= 65535)) { - self->private_impl.f_num_animation_loops_value += 1; - } - } else if (self->private_impl.f_call_sequence >= 32) { - } else if (v_is_iccp && self->private_impl.f_report_metadata_iccp) { - self->private_impl.f_metadata_fourcc = 1229144912; - self->private_impl.f_metadata_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))); - self->private_impl.f_call_sequence = 16; - status = wuffs_base__make_status(wuffs_base__note__metadata_reported); - goto ok; - } else if (v_is_xmp && self->private_impl.f_report_metadata_xmp) { - self->private_impl.f_metadata_fourcc = 1481461792; - self->private_impl.f_metadata_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))); - self->private_impl.f_call_sequence = 16; - status = wuffs_base__make_status(wuffs_base__note__metadata_reported); - goto ok; - } - goto label__goto_done__break; - } - label__goto_done__break:; - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10); - status = wuffs_gif__decoder__skip_blocks(self, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - - ok: - self->private_impl.p_decode_ae[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_ae[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_data.s_decode_ae[0].v_block_size = v_block_size; - self->private_data.s_decode_ae[0].v_is_animexts = v_is_animexts; - self->private_data.s_decode_ae[0].v_is_netscape = v_is_netscape; - self->private_data.s_decode_ae[0].v_is_iccp = v_is_iccp; - self->private_data.s_decode_ae[0].v_is_xmp = v_is_xmp; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func gif.decoder.decode_gc - -static wuffs_base__status -wuffs_gif__decoder__decode_gc( - wuffs_gif__decoder* self, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint8_t v_c = 0; - uint8_t v_flags = 0; - uint16_t v_gc_duration_centiseconds = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_decode_gc[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_0 = *iop_a_src++; - v_c = t_0; - } - if (v_c != 4) { - status = wuffs_base__make_status(wuffs_gif__error__bad_graphic_control); - goto exit; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_1 = *iop_a_src++; - v_flags = t_1; - } - self->private_impl.f_gc_has_transparent_index = ((v_flags & 1) != 0); - v_flags = ((v_flags >> 2) & 7); - if (v_flags == 2) { - self->private_impl.f_gc_disposal = 1; - } else if ((v_flags == 3) || (v_flags == 4)) { - self->private_impl.f_gc_disposal = 2; - } else { - self->private_impl.f_gc_disposal = 0; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); - uint16_t t_2; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { - t_2 = wuffs_base__peek_u16le__no_bounds_check(iop_a_src); - iop_a_src += 2; - } else { - self->private_data.s_decode_gc[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_decode_gc[0].scratch; - uint32_t num_bits_2 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_2; - if (num_bits_2 == 8) { - t_2 = ((uint16_t)(*scratch)); - break; - } - num_bits_2 += 8; - *scratch |= ((uint64_t)(num_bits_2)) << 56; - } - } - v_gc_duration_centiseconds = t_2; - } - self->private_impl.f_gc_duration = (((uint64_t)(v_gc_duration_centiseconds)) * 7056000); - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_3 = *iop_a_src++; - self->private_impl.f_gc_transparent_index = t_3; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_4 = *iop_a_src++; - v_c = t_4; - } - if (v_c != 0) { - status = wuffs_base__make_status(wuffs_gif__error__bad_graphic_control); - goto exit; - } - - goto ok; - ok: - self->private_impl.p_decode_gc[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_gc[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func gif.decoder.decode_id_part0 - -static wuffs_base__status -wuffs_gif__decoder__decode_id_part0( - wuffs_gif__decoder* self, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_decode_id_part0[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - uint32_t t_0; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { - t_0 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src))); - iop_a_src += 2; - } else { - self->private_data.s_decode_id_part0[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_decode_id_part0[0].scratch; - uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0; - if (num_bits_0 == 8) { - t_0 = ((uint32_t)(*scratch)); - break; - } - num_bits_0 += 8; - *scratch |= ((uint64_t)(num_bits_0)) << 56; - } - } - self->private_impl.f_frame_rect_x0 = t_0; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); - uint32_t t_1; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { - t_1 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src))); - iop_a_src += 2; - } else { - self->private_data.s_decode_id_part0[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_decode_id_part0[0].scratch; - uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1; - if (num_bits_1 == 8) { - t_1 = ((uint32_t)(*scratch)); - break; - } - num_bits_1 += 8; - *scratch |= ((uint64_t)(num_bits_1)) << 56; - } - } - self->private_impl.f_frame_rect_y0 = t_1; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); - uint32_t t_2; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { - t_2 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src))); - iop_a_src += 2; - } else { - self->private_data.s_decode_id_part0[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_decode_id_part0[0].scratch; - uint32_t num_bits_2 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_2; - if (num_bits_2 == 8) { - t_2 = ((uint32_t)(*scratch)); - break; - } - num_bits_2 += 8; - *scratch |= ((uint64_t)(num_bits_2)) << 56; - } - } - self->private_impl.f_frame_rect_x1 = t_2; - } - self->private_impl.f_frame_rect_x1 += self->private_impl.f_frame_rect_x0; - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7); - uint32_t t_3; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { - t_3 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src))); - iop_a_src += 2; - } else { - self->private_data.s_decode_id_part0[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_decode_id_part0[0].scratch; - uint32_t num_bits_3 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_3; - if (num_bits_3 == 8) { - t_3 = ((uint32_t)(*scratch)); - break; - } - num_bits_3 += 8; - *scratch |= ((uint64_t)(num_bits_3)) << 56; - } - } - self->private_impl.f_frame_rect_y1 = t_3; - } - self->private_impl.f_frame_rect_y1 += self->private_impl.f_frame_rect_y0; - self->private_impl.f_dst_x = self->private_impl.f_frame_rect_x0; - self->private_impl.f_dst_y = self->private_impl.f_frame_rect_y0; - if ((self->private_impl.f_num_decoded_frame_configs_value == 0) && ! self->private_impl.f_quirks[4]) { - self->private_impl.f_width = wuffs_base__u32__max(self->private_impl.f_width, self->private_impl.f_frame_rect_x1); - self->private_impl.f_height = wuffs_base__u32__max(self->private_impl.f_height, self->private_impl.f_frame_rect_y1); - } - - goto ok; - ok: - self->private_impl.p_decode_id_part0[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_id_part0[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func gif.decoder.decode_id_part1 - -static wuffs_base__status -wuffs_gif__decoder__decode_id_part1( - wuffs_gif__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__pixel_blend a_blend) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint8_t v_flags = 0; - uint8_t v_which_palette = 0; - uint32_t v_num_palette_entries = 0; - uint32_t v_i = 0; - uint32_t v_argb = 0; - wuffs_base__status v_status = wuffs_base__make_status(NULL); - uint8_t v_lw = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_decode_id_part1[0]; - if (coro_susp_point) { - v_which_palette = self->private_data.s_decode_id_part1[0].v_which_palette; - v_num_palette_entries = self->private_data.s_decode_id_part1[0].v_num_palette_entries; - v_i = self->private_data.s_decode_id_part1[0].v_i; - } - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_0 = *iop_a_src++; - v_flags = t_0; - } - if ((v_flags & 64) != 0) { - self->private_impl.f_interlace = 4; - } else { - self->private_impl.f_interlace = 0; - } - v_which_palette = 1; - if ((v_flags & 128) != 0) { - v_num_palette_entries = (((uint32_t)(1)) << (1 + (v_flags & 7))); - v_i = 0; - while (v_i < v_num_palette_entries) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - uint32_t t_1; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 3)) { - t_1 = ((uint32_t)(wuffs_base__peek_u24be__no_bounds_check(iop_a_src))); - iop_a_src += 3; - } else { - self->private_data.s_decode_id_part1[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_decode_id_part1[0].scratch; - uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFF)); - *scratch >>= 8; - *scratch <<= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1); - if (num_bits_1 == 16) { - t_1 = ((uint32_t)(*scratch >> 40)); - break; - } - num_bits_1 += 8; - *scratch |= ((uint64_t)(num_bits_1)); - } - } - v_argb = t_1; - } - v_argb |= 4278190080; - self->private_data.f_palettes[1][((4 * v_i) + 0)] = ((uint8_t)(((v_argb >> 0) & 255))); - self->private_data.f_palettes[1][((4 * v_i) + 1)] = ((uint8_t)(((v_argb >> 8) & 255))); - self->private_data.f_palettes[1][((4 * v_i) + 2)] = ((uint8_t)(((v_argb >> 16) & 255))); - self->private_data.f_palettes[1][((4 * v_i) + 3)] = ((uint8_t)(((v_argb >> 24) & 255))); - v_i += 1; - } - while (v_i < 256) { - self->private_data.f_palettes[1][((4 * v_i) + 0)] = 0; - self->private_data.f_palettes[1][((4 * v_i) + 1)] = 0; - self->private_data.f_palettes[1][((4 * v_i) + 2)] = 0; - self->private_data.f_palettes[1][((4 * v_i) + 3)] = 255; - v_i += 1; - } - } else if (self->private_impl.f_quirks[6] && ! self->private_impl.f_has_global_palette) { - status = wuffs_base__make_status(wuffs_gif__error__bad_palette); - goto exit; - } else if (self->private_impl.f_gc_has_transparent_index) { - wuffs_base__slice_u8__copy_from_slice(wuffs_base__make_slice_u8(self->private_data.f_palettes[1], 1024), wuffs_base__make_slice_u8(self->private_data.f_palettes[0], 1024)); - } else { - v_which_palette = 0; - } - if (self->private_impl.f_gc_has_transparent_index) { - self->private_data.f_palettes[1][((4 * ((uint32_t)(self->private_impl.f_gc_transparent_index))) + 0)] = 0; - self->private_data.f_palettes[1][((4 * ((uint32_t)(self->private_impl.f_gc_transparent_index))) + 1)] = 0; - self->private_data.f_palettes[1][((4 * ((uint32_t)(self->private_impl.f_gc_transparent_index))) + 2)] = 0; - self->private_data.f_palettes[1][((4 * ((uint32_t)(self->private_impl.f_gc_transparent_index))) + 3)] = 0; - } - v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler, - wuffs_base__pixel_buffer__pixel_format(a_dst), - wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024)), - wuffs_base__utility__make_pixel_format(2198077448), - wuffs_base__make_slice_u8(self->private_data.f_palettes[v_which_palette], 1024), - a_blend); - if ( ! wuffs_base__status__is_ok(&v_status)) { - status = v_status; - if (wuffs_base__status__is_error(&status)) { - goto exit; - } else if (wuffs_base__status__is_suspension(&status)) { - status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension); - goto exit; - } - goto ok; - } - if (self->private_impl.f_previous_lzw_decode_ended_abruptly) { - wuffs_base__ignore_status(wuffs_lzw__decoder__initialize(&self->private_data.f_lzw, - sizeof (wuffs_lzw__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED)); - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_2 = *iop_a_src++; - v_lw = t_2; - } - if (v_lw > 8) { - status = wuffs_base__make_status(wuffs_gif__error__bad_literal_width); - goto exit; - } - wuffs_lzw__decoder__set_quirk(&self->private_data.f_lzw, 1348378624, ((uint64_t)((1 + v_lw)))); - self->private_impl.f_previous_lzw_decode_ended_abruptly = true; - - ok: - self->private_impl.p_decode_id_part1[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_id_part1[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_data.s_decode_id_part1[0].v_which_palette = v_which_palette; - self->private_data.s_decode_id_part1[0].v_num_palette_entries = v_num_palette_entries; - self->private_data.s_decode_id_part1[0].v_i = v_i; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func gif.decoder.decode_id_part2 - -static wuffs_base__status -wuffs_gif__decoder__decode_id_part2( - wuffs_gif__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__slice_u8 a_workbuf) { - wuffs_base__io_buffer empty_io_buffer = wuffs_base__empty_io_buffer(); - - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint64_t v_block_size = 0; - bool v_need_block_size = false; - uint32_t v_n_copied = 0; - uint64_t v_n_compressed = 0; - wuffs_base__io_buffer u_r = wuffs_base__empty_io_buffer(); - wuffs_base__io_buffer* v_r = &u_r; - const uint8_t* iop_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io0_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - uint64_t v_mark = 0; - wuffs_base__status v_lzw_status = wuffs_base__make_status(NULL); - wuffs_base__status v_copy_status = wuffs_base__make_status(NULL); - wuffs_base__slice_u8 v_uncompressed = {0}; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_decode_id_part2[0]; - if (coro_susp_point) { - v_block_size = self->private_data.s_decode_id_part2[0].v_block_size; - v_need_block_size = self->private_data.s_decode_id_part2[0].v_need_block_size; - } - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - v_need_block_size = true; - label__outer__continue:; - while (true) { - if (v_need_block_size) { - v_need_block_size = false; - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t t_0 = *iop_a_src++; - v_block_size = t_0; - } - } - if (v_block_size == 0) { - goto label__outer__break; - } - while (((uint64_t)(io2_a_src - iop_a_src)) == 0) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2); - } - if (self->private_impl.f_compressed_ri == self->private_impl.f_compressed_wi) { - self->private_impl.f_compressed_ri = 0; - self->private_impl.f_compressed_wi = 0; - } - while (self->private_impl.f_compressed_wi <= 3841) { - v_n_compressed = wuffs_base__u64__min(v_block_size, ((uint64_t)(io2_a_src - iop_a_src))); - if (v_n_compressed <= 0) { - goto label__0__break; - } - v_n_copied = wuffs_base__io_reader__limited_copy_u32_to_slice( - &iop_a_src, io2_a_src,((uint32_t)((v_n_compressed & 4294967295))), wuffs_base__make_slice_u8_ij(self->private_data.f_compressed, self->private_impl.f_compressed_wi, 4096)); - wuffs_base__u64__sat_add_indirect(&self->private_impl.f_compressed_wi, ((uint64_t)(v_n_copied))); - wuffs_base__u64__sat_sub_indirect(&v_block_size, ((uint64_t)(v_n_copied))); - if (v_block_size > 0) { - goto label__0__break; - } - if (((uint64_t)(io2_a_src - iop_a_src)) <= 0) { - v_need_block_size = true; - goto label__0__break; - } - v_block_size = ((uint64_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))); - iop_a_src += 1; - } - label__0__break:; - label__inner__continue:; - while (true) { - if ((self->private_impl.f_compressed_ri > self->private_impl.f_compressed_wi) || (self->private_impl.f_compressed_wi > 4096)) { - status = wuffs_base__make_status(wuffs_gif__error__internal_error_inconsistent_ri_wi); - goto exit; - } - { - wuffs_base__io_buffer* o_0_v_r = v_r; - const uint8_t *o_0_iop_v_r = iop_v_r; - const uint8_t *o_0_io0_v_r = io0_v_r; - const uint8_t *o_0_io1_v_r = io1_v_r; - const uint8_t *o_0_io2_v_r = io2_v_r; - v_r = wuffs_base__io_reader__set( - &u_r, - &iop_v_r, - &io0_v_r, - &io1_v_r, - &io2_v_r, - wuffs_base__make_slice_u8_ij(self->private_data.f_compressed, - self->private_impl.f_compressed_ri, - self->private_impl.f_compressed_wi), - 0); - v_mark = ((uint64_t)(iop_v_r - io0_v_r)); - { - u_r.meta.ri = ((size_t)(iop_v_r - u_r.data.ptr)); - wuffs_base__status t_1 = wuffs_lzw__decoder__transform_io(&self->private_data.f_lzw, &empty_io_buffer, v_r, wuffs_base__utility__empty_slice_u8()); - v_lzw_status = t_1; - iop_v_r = u_r.data.ptr + u_r.meta.ri; - } - wuffs_base__u64__sat_add_indirect(&self->private_impl.f_compressed_ri, wuffs_base__io__count_since(v_mark, ((uint64_t)(iop_v_r - io0_v_r)))); - v_r = o_0_v_r; - iop_v_r = o_0_iop_v_r; - io0_v_r = o_0_io0_v_r; - io1_v_r = o_0_io1_v_r; - io2_v_r = o_0_io2_v_r; - } - v_uncompressed = wuffs_lzw__decoder__flush(&self->private_data.f_lzw); - if (((uint64_t)(v_uncompressed.len)) > 0) { - v_copy_status = wuffs_gif__decoder__copy_to_image_buffer(self, a_dst, v_uncompressed); - if (wuffs_base__status__is_error(&v_copy_status)) { - status = v_copy_status; - goto exit; - } - } - if (wuffs_base__status__is_ok(&v_lzw_status)) { - self->private_impl.f_previous_lzw_decode_ended_abruptly = false; - if (v_need_block_size || (v_block_size > 0)) { - self->private_data.s_decode_id_part2[0].scratch = ((uint32_t)(v_block_size)); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); - if (self->private_data.s_decode_id_part2[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { - self->private_data.s_decode_id_part2[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); - iop_a_src = io2_a_src; - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - iop_a_src += self->private_data.s_decode_id_part2[0].scratch; - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); - status = wuffs_gif__decoder__skip_blocks(self, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - } - goto label__outer__break; - } else if (v_lzw_status.repr == wuffs_base__suspension__short_read) { - goto label__outer__continue; - } else if (v_lzw_status.repr == wuffs_base__suspension__short_write) { - goto label__inner__continue; - } else if (self->private_impl.f_quirks[3] && (self->private_impl.f_dst_y >= self->private_impl.f_frame_rect_y1) && (self->private_impl.f_interlace == 0)) { - if (v_need_block_size || (v_block_size > 0)) { - self->private_data.s_decode_id_part2[0].scratch = ((uint32_t)(v_block_size)); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); - if (self->private_data.s_decode_id_part2[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { - self->private_data.s_decode_id_part2[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); - iop_a_src = io2_a_src; - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - iop_a_src += self->private_data.s_decode_id_part2[0].scratch; - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); - status = wuffs_gif__decoder__skip_blocks(self, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - } - goto label__outer__break; - } - status = v_lzw_status; - if (wuffs_base__status__is_error(&status)) { - goto exit; - } else if (wuffs_base__status__is_suspension(&status)) { - status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension); - goto exit; - } - goto ok; - } - } - label__outer__break:; - self->private_impl.f_compressed_ri = 0; - self->private_impl.f_compressed_wi = 0; - if ((self->private_impl.f_dst_y < self->private_impl.f_frame_rect_y1) && (self->private_impl.f_frame_rect_x0 != self->private_impl.f_frame_rect_x1) && (self->private_impl.f_frame_rect_y0 != self->private_impl.f_frame_rect_y1)) { - status = wuffs_base__make_status(wuffs_base__error__not_enough_data); - goto exit; - } - - ok: - self->private_impl.p_decode_id_part2[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_id_part2[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_data.s_decode_id_part2[0].v_block_size = v_block_size; - self->private_data.s_decode_id_part2[0].v_need_block_size = v_need_block_size; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func gif.decoder.copy_to_image_buffer - -static wuffs_base__status -wuffs_gif__decoder__copy_to_image_buffer( - wuffs_gif__decoder* self, - wuffs_base__pixel_buffer* a_pb, - wuffs_base__slice_u8 a_src) { - wuffs_base__slice_u8 v_dst = {0}; - wuffs_base__slice_u8 v_src = {0}; - uint64_t v_width_in_bytes = 0; - uint64_t v_n = 0; - uint64_t v_src_ri = 0; - wuffs_base__pixel_format v_pixfmt = {0}; - uint32_t v_bytes_per_pixel = 0; - uint32_t v_bits_per_pixel = 0; - wuffs_base__table_u8 v_tab = {0}; - uint64_t v_i = 0; - uint64_t v_j = 0; - uint32_t v_replicate_y0 = 0; - uint32_t v_replicate_y1 = 0; - wuffs_base__slice_u8 v_replicate_dst = {0}; - wuffs_base__slice_u8 v_replicate_src = {0}; - - v_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_pb); - v_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_pixfmt); - if ((v_bits_per_pixel & 7) != 0) { - return wuffs_base__make_status(wuffs_base__error__unsupported_option); - } - v_bytes_per_pixel = (v_bits_per_pixel >> 3); - v_width_in_bytes = ((uint64_t)((self->private_impl.f_width * v_bytes_per_pixel))); - v_tab = wuffs_base__pixel_buffer__plane(a_pb, 0); - label__0__continue:; - while (v_src_ri < ((uint64_t)(a_src.len))) { - v_src = wuffs_base__slice_u8__subslice_i(a_src, v_src_ri); - if (self->private_impl.f_dst_y >= self->private_impl.f_frame_rect_y1) { - if (self->private_impl.f_quirks[3]) { - return wuffs_base__make_status(NULL); - } - return wuffs_base__make_status(wuffs_base__error__too_much_data); - } - v_dst = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y); - if (self->private_impl.f_dst_y >= self->private_impl.f_height) { - v_dst = wuffs_base__slice_u8__subslice_j(v_dst, 0); - } else if (v_width_in_bytes < ((uint64_t)(v_dst.len))) { - v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_width_in_bytes); - } - v_i = (((uint64_t)(self->private_impl.f_dst_x)) * ((uint64_t)(v_bytes_per_pixel))); - if (v_i < ((uint64_t)(v_dst.len))) { - v_j = (((uint64_t)(self->private_impl.f_frame_rect_x1)) * ((uint64_t)(v_bytes_per_pixel))); - if ((v_i <= v_j) && (v_j <= ((uint64_t)(v_dst.len)))) { - v_dst = wuffs_base__slice_u8__subslice_ij(v_dst, v_i, v_j); - } else { - v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_i); - } - v_n = wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024), v_src); - wuffs_base__u64__sat_add_indirect(&v_src_ri, v_n); - wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)((v_n & 4294967295)))); - self->private_impl.f_dirty_max_excl_y = wuffs_base__u32__max(self->private_impl.f_dirty_max_excl_y, wuffs_base__u32__sat_add(self->private_impl.f_dst_y, 1)); - } - if (self->private_impl.f_frame_rect_x1 <= self->private_impl.f_dst_x) { - self->private_impl.f_dst_x = self->private_impl.f_frame_rect_x0; - if (self->private_impl.f_interlace == 0) { - wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_y, 1); - goto label__0__continue; - } - if ((self->private_impl.f_num_decoded_frames_value == 0) && ! self->private_impl.f_gc_has_transparent_index && (self->private_impl.f_interlace > 1)) { - v_replicate_src = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y); - v_replicate_y0 = wuffs_base__u32__sat_add(self->private_impl.f_dst_y, 1); - v_replicate_y1 = wuffs_base__u32__sat_add(self->private_impl.f_dst_y, ((uint32_t)(WUFFS_GIF__INTERLACE_COUNT[self->private_impl.f_interlace]))); - v_replicate_y1 = wuffs_base__u32__min(v_replicate_y1, self->private_impl.f_frame_rect_y1); - while (v_replicate_y0 < v_replicate_y1) { - v_replicate_dst = wuffs_base__table_u8__row_u32(v_tab, v_replicate_y0); - wuffs_base__slice_u8__copy_from_slice(v_replicate_dst, v_replicate_src); - v_replicate_y0 += 1; - } - self->private_impl.f_dirty_max_excl_y = wuffs_base__u32__max(self->private_impl.f_dirty_max_excl_y, v_replicate_y1); - } - wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_y, ((uint32_t)(WUFFS_GIF__INTERLACE_DELTA[self->private_impl.f_interlace]))); - while ((self->private_impl.f_interlace > 0) && (self->private_impl.f_dst_y >= self->private_impl.f_frame_rect_y1)) { -#if defined(__GNUC__) -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wconversion" -#endif - self->private_impl.f_interlace -= 1; -#if defined(__GNUC__) -#pragma GCC diagnostic pop -#endif - self->private_impl.f_dst_y = wuffs_base__u32__sat_add(self->private_impl.f_frame_rect_y0, WUFFS_GIF__INTERLACE_START[self->private_impl.f_interlace]); - } - goto label__0__continue; - } - if (((uint64_t)(a_src.len)) == v_src_ri) { - goto label__0__break; - } else if (((uint64_t)(a_src.len)) < v_src_ri) { - return wuffs_base__make_status(wuffs_gif__error__internal_error_inconsistent_ri_wi); - } - v_n = ((uint64_t)((self->private_impl.f_frame_rect_x1 - self->private_impl.f_dst_x))); - v_n = wuffs_base__u64__min(v_n, (((uint64_t)(a_src.len)) - v_src_ri)); - wuffs_base__u64__sat_add_indirect(&v_src_ri, v_n); - wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)((v_n & 4294967295)))); - if (self->private_impl.f_frame_rect_x1 <= self->private_impl.f_dst_x) { - self->private_impl.f_dst_x = self->private_impl.f_frame_rect_x0; - wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_y, ((uint32_t)(WUFFS_GIF__INTERLACE_DELTA[self->private_impl.f_interlace]))); - while ((self->private_impl.f_interlace > 0) && (self->private_impl.f_dst_y >= self->private_impl.f_frame_rect_y1)) { -#if defined(__GNUC__) -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wconversion" -#endif - self->private_impl.f_interlace -= 1; -#if defined(__GNUC__) -#pragma GCC diagnostic pop -#endif - self->private_impl.f_dst_y = wuffs_base__u32__sat_add(self->private_impl.f_frame_rect_y0, WUFFS_GIF__INTERLACE_START[self->private_impl.f_interlace]); - } - goto label__0__continue; - } - if (v_src_ri != ((uint64_t)(a_src.len))) { - return wuffs_base__make_status(wuffs_gif__error__internal_error_inconsistent_ri_wi); - } - goto label__0__break; - } - label__0__break:; - return wuffs_base__make_status(NULL); -} - -#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__GIF) - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__GZIP) - -// ---------------- Status Codes Implementations - -const char wuffs_gzip__error__bad_checksum[] = "#gzip: bad checksum"; -const char wuffs_gzip__error__bad_compression_method[] = "#gzip: bad compression method"; -const char wuffs_gzip__error__bad_encoding_flags[] = "#gzip: bad encoding flags"; -const char wuffs_gzip__error__bad_header[] = "#gzip: bad header"; -const char wuffs_gzip__error__truncated_input[] = "#gzip: truncated input"; - -// ---------------- Private Consts - -// ---------------- Private Initializer Prototypes - -// ---------------- Private Function Prototypes - -static wuffs_base__status -wuffs_gzip__decoder__do_transform_io( - wuffs_gzip__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__slice_u8 a_workbuf); - -// ---------------- VTables - -const wuffs_base__io_transformer__func_ptrs -wuffs_gzip__decoder__func_ptrs_for__wuffs_base__io_transformer = { - (wuffs_base__status(*)(void*, - uint32_t, - uint64_t))(&wuffs_gzip__decoder__set_quirk), - (wuffs_base__status(*)(void*, - wuffs_base__io_buffer*, - wuffs_base__io_buffer*, - wuffs_base__slice_u8))(&wuffs_gzip__decoder__transform_io), - (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_gzip__decoder__workbuf_len), -}; - -// ---------------- Initializer Implementations - -wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT -wuffs_gzip__decoder__initialize( - wuffs_gzip__decoder* self, - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options){ - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (sizeof(*self) != sizeof_star_self) { - return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver); - } - if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) || - (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) { - return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version); - } - - if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) { - // The whole point of this if-check is to detect an uninitialized *self. - // We disable the warning on GCC. Clang-5.0 does not have this warning. -#if !defined(__clang__) && defined(__GNUC__) -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wmaybe-uninitialized" -#endif - if (self->private_impl.magic != 0) { - return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed); - } -#if !defined(__clang__) && defined(__GNUC__) -#pragma GCC diagnostic pop -#endif - } else { - if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) { - memset(self, 0, sizeof(*self)); - options |= WUFFS_INITIALIZE__ALREADY_ZEROED; - } else { - memset(&(self->private_impl), 0, sizeof(self->private_impl)); - } - } - - { - wuffs_base__status z = wuffs_crc32__ieee_hasher__initialize( - &self->private_data.f_checksum, sizeof(self->private_data.f_checksum), WUFFS_VERSION, options); - if (z.repr) { - return z; - } - } - { - wuffs_base__status z = wuffs_deflate__decoder__initialize( - &self->private_data.f_flate, sizeof(self->private_data.f_flate), WUFFS_VERSION, options); - if (z.repr) { - return z; - } - } - self->private_impl.magic = WUFFS_BASE__MAGIC; - self->private_impl.vtable_for__wuffs_base__io_transformer.vtable_name = - wuffs_base__io_transformer__vtable_name; - self->private_impl.vtable_for__wuffs_base__io_transformer.function_pointers = - (const void*)(&wuffs_gzip__decoder__func_ptrs_for__wuffs_base__io_transformer); - return wuffs_base__make_status(NULL); -} - -wuffs_gzip__decoder* -wuffs_gzip__decoder__alloc() { - wuffs_gzip__decoder* x = - (wuffs_gzip__decoder*)(calloc(sizeof(wuffs_gzip__decoder), 1)); - if (!x) { - return NULL; - } - if (wuffs_gzip__decoder__initialize( - x, sizeof(wuffs_gzip__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) { - free(x); - return NULL; - } - return x; -} - -size_t -sizeof__wuffs_gzip__decoder() { - return sizeof(wuffs_gzip__decoder); -} - -// ---------------- Function Implementations - -// -------- func gzip.decoder.set_quirk - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_gzip__decoder__set_quirk( - wuffs_gzip__decoder* self, - uint32_t a_key, - uint64_t a_value) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - - if (a_key == 1) { - self->private_impl.f_ignore_checksum = (a_value > 0); - return wuffs_base__make_status(NULL); - } - return wuffs_base__make_status(wuffs_base__error__unsupported_option); -} - -// -------- func gzip.decoder.workbuf_len - -WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 -wuffs_gzip__decoder__workbuf_len( - const wuffs_gzip__decoder* self) { - if (!self) { - return wuffs_base__utility__empty_range_ii_u64(); - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return wuffs_base__utility__empty_range_ii_u64(); - } - - return wuffs_base__utility__make_range_ii_u64(1, 1); -} - -// -------- func gzip.decoder.transform_io - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_gzip__decoder__transform_io( - wuffs_gzip__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__slice_u8 a_workbuf) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - if (!a_dst || !a_src) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - if ((self->private_impl.active_coroutine != 0) && - (self->private_impl.active_coroutine != 1)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); - } - self->private_impl.active_coroutine = 0; - wuffs_base__status status = wuffs_base__make_status(NULL); - - wuffs_base__status v_status = wuffs_base__make_status(NULL); - - uint32_t coro_susp_point = self->private_impl.p_transform_io[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - while (true) { - { - wuffs_base__status t_0 = wuffs_gzip__decoder__do_transform_io(self, a_dst, a_src, a_workbuf); - v_status = t_0; - } - if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { - status = wuffs_base__make_status(wuffs_gzip__error__truncated_input); - goto exit; - } - status = v_status; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); - } - - ok: - self->private_impl.p_transform_io[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_transform_io[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0; - - goto exit; - exit: - if (wuffs_base__status__is_error(&status)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - } - return status; -} - -// -------- func gzip.decoder.do_transform_io - -static wuffs_base__status -wuffs_gzip__decoder__do_transform_io( - wuffs_gzip__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__slice_u8 a_workbuf) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint8_t v_c = 0; - uint8_t v_flags = 0; - uint16_t v_xlen = 0; - uint64_t v_mark = 0; - uint32_t v_checksum_got = 0; - uint32_t v_decoded_length_got = 0; - wuffs_base__status v_status = wuffs_base__make_status(NULL); - uint32_t v_checksum_want = 0; - uint32_t v_decoded_length_want = 0; - - uint8_t* iop_a_dst = NULL; - uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_dst && a_dst->data.ptr) { - io0_a_dst = a_dst->data.ptr; - io1_a_dst = io0_a_dst + a_dst->meta.wi; - iop_a_dst = io1_a_dst; - io2_a_dst = io0_a_dst + a_dst->data.len; - if (a_dst->meta.closed) { - io2_a_dst = iop_a_dst; - } - } - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_do_transform_io[0]; - if (coro_susp_point) { - v_flags = self->private_data.s_do_transform_io[0].v_flags; - v_checksum_got = self->private_data.s_do_transform_io[0].v_checksum_got; - v_decoded_length_got = self->private_data.s_do_transform_io[0].v_decoded_length_got; - v_checksum_want = self->private_data.s_do_transform_io[0].v_checksum_want; - } - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_0 = *iop_a_src++; - v_c = t_0; - } - if (v_c != 31) { - status = wuffs_base__make_status(wuffs_gzip__error__bad_header); - goto exit; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_1 = *iop_a_src++; - v_c = t_1; - } - if (v_c != 139) { - status = wuffs_base__make_status(wuffs_gzip__error__bad_header); - goto exit; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_2 = *iop_a_src++; - v_c = t_2; - } - if (v_c != 8) { - status = wuffs_base__make_status(wuffs_gzip__error__bad_compression_method); - goto exit; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_3 = *iop_a_src++; - v_flags = t_3; - } - self->private_data.s_do_transform_io[0].scratch = 6; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); - if (self->private_data.s_do_transform_io[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { - self->private_data.s_do_transform_io[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); - iop_a_src = io2_a_src; - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - iop_a_src += self->private_data.s_do_transform_io[0].scratch; - if ((v_flags & 4) != 0) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); - uint16_t t_4; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { - t_4 = wuffs_base__peek_u16le__no_bounds_check(iop_a_src); - iop_a_src += 2; - } else { - self->private_data.s_do_transform_io[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_do_transform_io[0].scratch; - uint32_t num_bits_4 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_4; - if (num_bits_4 == 8) { - t_4 = ((uint16_t)(*scratch)); - break; - } - num_bits_4 += 8; - *scratch |= ((uint64_t)(num_bits_4)) << 56; - } - } - v_xlen = t_4; - } - self->private_data.s_do_transform_io[0].scratch = ((uint32_t)(v_xlen)); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8); - if (self->private_data.s_do_transform_io[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { - self->private_data.s_do_transform_io[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); - iop_a_src = io2_a_src; - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - iop_a_src += self->private_data.s_do_transform_io[0].scratch; - } - if ((v_flags & 8) != 0) { - while (true) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_5 = *iop_a_src++; - v_c = t_5; - } - if (v_c == 0) { - goto label__0__break; - } - } - label__0__break:; - } - if ((v_flags & 16) != 0) { - while (true) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_6 = *iop_a_src++; - v_c = t_6; - } - if (v_c == 0) { - goto label__1__break; - } - } - label__1__break:; - } - if ((v_flags & 2) != 0) { - self->private_data.s_do_transform_io[0].scratch = 2; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11); - if (self->private_data.s_do_transform_io[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { - self->private_data.s_do_transform_io[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); - iop_a_src = io2_a_src; - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - iop_a_src += self->private_data.s_do_transform_io[0].scratch; - } - if ((v_flags & 224) != 0) { - status = wuffs_base__make_status(wuffs_gzip__error__bad_encoding_flags); - goto exit; - } - while (true) { - v_mark = ((uint64_t)(iop_a_dst - io0_a_dst)); - { - if (a_dst) { - a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); - } - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - wuffs_base__status t_7 = wuffs_deflate__decoder__transform_io(&self->private_data.f_flate, a_dst, a_src, a_workbuf); - v_status = t_7; - if (a_dst) { - iop_a_dst = a_dst->data.ptr + a_dst->meta.wi; - } - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - } - if ( ! self->private_impl.f_ignore_checksum) { - v_checksum_got = wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_checksum, wuffs_base__io__since(v_mark, ((uint64_t)(iop_a_dst - io0_a_dst)), io0_a_dst)); - v_decoded_length_got += ((uint32_t)((wuffs_base__io__count_since(v_mark, ((uint64_t)(iop_a_dst - io0_a_dst))) & 4294967295))); - } - if (wuffs_base__status__is_ok(&v_status)) { - goto label__2__break; - } - status = v_status; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(12); - } - label__2__break:; - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(13); - uint32_t t_8; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_8 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); - iop_a_src += 4; - } else { - self->private_data.s_do_transform_io[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(14); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_do_transform_io[0].scratch; - uint32_t num_bits_8 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_8; - if (num_bits_8 == 24) { - t_8 = ((uint32_t)(*scratch)); - break; - } - num_bits_8 += 8; - *scratch |= ((uint64_t)(num_bits_8)) << 56; - } - } - v_checksum_want = t_8; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(15); - uint32_t t_9; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_9 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); - iop_a_src += 4; - } else { - self->private_data.s_do_transform_io[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_do_transform_io[0].scratch; - uint32_t num_bits_9 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_9; - if (num_bits_9 == 24) { - t_9 = ((uint32_t)(*scratch)); - break; - } - num_bits_9 += 8; - *scratch |= ((uint64_t)(num_bits_9)) << 56; - } - } - v_decoded_length_want = t_9; - } - if ( ! self->private_impl.f_ignore_checksum && ((v_checksum_got != v_checksum_want) || (v_decoded_length_got != v_decoded_length_want))) { - status = wuffs_base__make_status(wuffs_gzip__error__bad_checksum); - goto exit; - } - - ok: - self->private_impl.p_do_transform_io[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_do_transform_io[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_data.s_do_transform_io[0].v_flags = v_flags; - self->private_data.s_do_transform_io[0].v_checksum_got = v_checksum_got; - self->private_data.s_do_transform_io[0].v_decoded_length_got = v_decoded_length_got; - self->private_data.s_do_transform_io[0].v_checksum_want = v_checksum_want; - - goto exit; - exit: - if (a_dst && a_dst->data.ptr) { - a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); - } - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__GZIP) - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__JPEG) - -// ---------------- Status Codes Implementations - -const char wuffs_jpeg__error__bad_dht_marker[] = "#jpeg: bad DHT marker"; -const char wuffs_jpeg__error__bad_dqt_marker[] = "#jpeg: bad DQT marker"; -const char wuffs_jpeg__error__bad_dri_marker[] = "#jpeg: bad DRI marker"; -const char wuffs_jpeg__error__bad_sof_marker[] = "#jpeg: bad SOF marker"; -const char wuffs_jpeg__error__bad_sos_marker[] = "#jpeg: bad SOS marker"; -const char wuffs_jpeg__error__bad_header[] = "#jpeg: bad header"; -const char wuffs_jpeg__error__bad_marker[] = "#jpeg: bad marker"; -const char wuffs_jpeg__error__missing_huffman_table[] = "#jpeg: missing Huffman table"; -const char wuffs_jpeg__error__missing_quantization_table[] = "#jpeg: missing Quantization table"; -const char wuffs_jpeg__error__truncated_input[] = "#jpeg: truncated input"; -const char wuffs_jpeg__error__unsupported_arithmetic_coding[] = "#jpeg: unsupported arithmetic coding"; -const char wuffs_jpeg__error__unsupported_fractional_sampling[] = "#jpeg: unsupported fractional sampling"; -const char wuffs_jpeg__error__unsupported_hierarchical_coding[] = "#jpeg: unsupported hierarchical coding"; -const char wuffs_jpeg__error__unsupported_implicit_height[] = "#jpeg: unsupported implicit height"; -const char wuffs_jpeg__error__unsupported_lossless_coding[] = "#jpeg: unsupported lossless coding"; -const char wuffs_jpeg__error__unsupported_marker[] = "#jpeg: unsupported marker"; -const char wuffs_jpeg__error__unsupported_precision_12_bits[] = "#jpeg: unsupported precision (12 bits)"; -const char wuffs_jpeg__error__unsupported_precision_16_bits[] = "#jpeg: unsupported precision (16 bits)"; -const char wuffs_jpeg__error__unsupported_precision[] = "#jpeg: unsupported precision"; -const char wuffs_jpeg__error__internal_error_inconsistent_decoder_state[] = "#jpeg: internal error: inconsistent decoder state"; - -// ---------------- Private Consts - -static const uint8_t -WUFFS_JPEG__UNZIG[80] WUFFS_BASE__POTENTIALLY_UNUSED = { - 0, 1, 8, 16, 9, 2, 3, 10, - 17, 24, 32, 25, 18, 11, 4, 5, - 12, 19, 26, 33, 40, 48, 41, 34, - 27, 20, 13, 6, 7, 14, 21, 28, - 35, 42, 49, 56, 57, 50, 43, 36, - 29, 22, 15, 23, 30, 37, 44, 51, - 58, 59, 52, 45, 38, 31, 39, 46, - 53, 60, 61, 54, 47, 55, 62, 63, - 63, 63, 63, 63, 63, 63, 63, 63, - 63, 63, 63, 63, 63, 63, 63, 63, -}; - -static const uint8_t -WUFFS_JPEG__BIAS_AND_CLAMP[1024] WUFFS_BASE__POTENTIALLY_UNUSED = { - 128, 129, 130, 131, 132, 133, 134, 135, - 136, 137, 138, 139, 140, 141, 142, 143, - 144, 145, 146, 147, 148, 149, 150, 151, - 152, 153, 154, 155, 156, 157, 158, 159, - 160, 161, 162, 163, 164, 165, 166, 167, - 168, 169, 170, 171, 172, 173, 174, 175, - 176, 177, 178, 179, 180, 181, 182, 183, - 184, 185, 186, 187, 188, 189, 190, 191, - 192, 193, 194, 195, 196, 197, 198, 199, - 200, 201, 202, 203, 204, 205, 206, 207, - 208, 209, 210, 211, 212, 213, 214, 215, - 216, 217, 218, 219, 220, 221, 222, 223, - 224, 225, 226, 227, 228, 229, 230, 231, - 232, 233, 234, 235, 236, 237, 238, 239, - 240, 241, 242, 243, 244, 245, 246, 247, - 248, 249, 250, 251, 252, 253, 254, 255, - 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, - 255, 255, 255, 255, 255, 255, 255, 255, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 1, 2, 3, 4, 5, 6, 7, - 8, 9, 10, 11, 12, 13, 14, 15, - 16, 17, 18, 19, 20, 21, 22, 23, - 24, 25, 26, 27, 28, 29, 30, 31, - 32, 33, 34, 35, 36, 37, 38, 39, - 40, 41, 42, 43, 44, 45, 46, 47, - 48, 49, 50, 51, 52, 53, 54, 55, - 56, 57, 58, 59, 60, 61, 62, 63, - 64, 65, 66, 67, 68, 69, 70, 71, - 72, 73, 74, 75, 76, 77, 78, 79, - 80, 81, 82, 83, 84, 85, 86, 87, - 88, 89, 90, 91, 92, 93, 94, 95, - 96, 97, 98, 99, 100, 101, 102, 103, - 104, 105, 106, 107, 108, 109, 110, 111, - 112, 113, 114, 115, 116, 117, 118, 119, - 120, 121, 122, 123, 124, 125, 126, 127, -}; - -// ---------------- Private Initializer Prototypes - -// ---------------- Private Function Prototypes - -static wuffs_base__empty_struct -wuffs_jpeg__decoder__decode_idct( - wuffs_jpeg__decoder* self, - wuffs_base__slice_u8 a_dst_buffer, - uint64_t a_dst_stride, - uint32_t a_b, - uint32_t a_q); - -static wuffs_base__status -wuffs_jpeg__decoder__do_decode_image_config( - wuffs_jpeg__decoder* self, - wuffs_base__image_config* a_dst, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_jpeg__decoder__decode_dqt( - wuffs_jpeg__decoder* self, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_jpeg__decoder__decode_dri( - wuffs_jpeg__decoder* self, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_jpeg__decoder__decode_sof( - wuffs_jpeg__decoder* self, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_jpeg__decoder__do_decode_frame_config( - wuffs_jpeg__decoder* self, - wuffs_base__frame_config* a_dst, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_jpeg__decoder__do_decode_frame( - wuffs_jpeg__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__pixel_blend a_blend, - wuffs_base__slice_u8 a_workbuf, - wuffs_base__decode_frame_options* a_opts); - -static wuffs_base__status -wuffs_jpeg__decoder__decode_dht( - wuffs_jpeg__decoder* self, - wuffs_base__io_buffer* a_src); - -static bool -wuffs_jpeg__decoder__calculate_huff_tables( - wuffs_jpeg__decoder* self, - uint8_t a_tc4_th, - uint32_t a_total_count); - -static wuffs_base__status -wuffs_jpeg__decoder__decode_sos( - wuffs_jpeg__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__slice_u8 a_workbuf); - -static wuffs_base__status -wuffs_jpeg__decoder__prepare_scan( - wuffs_jpeg__decoder* self, - wuffs_base__io_buffer* a_src); - -static wuffs_base__empty_struct -wuffs_jpeg__decoder__fill_bitstream( - wuffs_jpeg__decoder* self, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_jpeg__decoder__skip_past_the_next_restart_marker( - wuffs_jpeg__decoder* self, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_jpeg__decoder__swizzle_gray( - wuffs_jpeg__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__slice_u8 a_workbuf); - -static wuffs_base__status -wuffs_jpeg__decoder__swizzle_colorful( - wuffs_jpeg__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__slice_u8 a_workbuf); - -static uint32_t -wuffs_jpeg__decoder__decode_mcu( - wuffs_jpeg__decoder* self); - -// ---------------- VTables - -const wuffs_base__image_decoder__func_ptrs -wuffs_jpeg__decoder__func_ptrs_for__wuffs_base__image_decoder = { - (wuffs_base__status(*)(void*, - wuffs_base__pixel_buffer*, - wuffs_base__io_buffer*, - wuffs_base__pixel_blend, - wuffs_base__slice_u8, - wuffs_base__decode_frame_options*))(&wuffs_jpeg__decoder__decode_frame), - (wuffs_base__status(*)(void*, - wuffs_base__frame_config*, - wuffs_base__io_buffer*))(&wuffs_jpeg__decoder__decode_frame_config), - (wuffs_base__status(*)(void*, - wuffs_base__image_config*, - wuffs_base__io_buffer*))(&wuffs_jpeg__decoder__decode_image_config), - (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_jpeg__decoder__frame_dirty_rect), - (uint32_t(*)(const void*))(&wuffs_jpeg__decoder__num_animation_loops), - (uint64_t(*)(const void*))(&wuffs_jpeg__decoder__num_decoded_frame_configs), - (uint64_t(*)(const void*))(&wuffs_jpeg__decoder__num_decoded_frames), - (wuffs_base__status(*)(void*, - uint64_t, - uint64_t))(&wuffs_jpeg__decoder__restart_frame), - (wuffs_base__status(*)(void*, - uint32_t, - uint64_t))(&wuffs_jpeg__decoder__set_quirk), - (wuffs_base__empty_struct(*)(void*, - uint32_t, - bool))(&wuffs_jpeg__decoder__set_report_metadata), - (wuffs_base__status(*)(void*, - wuffs_base__io_buffer*, - wuffs_base__more_information*, - wuffs_base__io_buffer*))(&wuffs_jpeg__decoder__tell_me_more), - (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_jpeg__decoder__workbuf_len), -}; - -// ---------------- Initializer Implementations - -wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT -wuffs_jpeg__decoder__initialize( - wuffs_jpeg__decoder* self, - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options){ - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (sizeof(*self) != sizeof_star_self) { - return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver); - } - if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) || - (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) { - return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version); - } - - if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) { - // The whole point of this if-check is to detect an uninitialized *self. - // We disable the warning on GCC. Clang-5.0 does not have this warning. -#if !defined(__clang__) && defined(__GNUC__) -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wmaybe-uninitialized" -#endif - if (self->private_impl.magic != 0) { - return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed); - } -#if !defined(__clang__) && defined(__GNUC__) -#pragma GCC diagnostic pop -#endif - } else { - if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) { - memset(self, 0, sizeof(*self)); - options |= WUFFS_INITIALIZE__ALREADY_ZEROED; - } else { - memset(&(self->private_impl), 0, sizeof(self->private_impl)); - } - } - - self->private_impl.magic = WUFFS_BASE__MAGIC; - self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name = - wuffs_base__image_decoder__vtable_name; - self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers = - (const void*)(&wuffs_jpeg__decoder__func_ptrs_for__wuffs_base__image_decoder); - return wuffs_base__make_status(NULL); -} - -wuffs_jpeg__decoder* -wuffs_jpeg__decoder__alloc() { - wuffs_jpeg__decoder* x = - (wuffs_jpeg__decoder*)(calloc(sizeof(wuffs_jpeg__decoder), 1)); - if (!x) { - return NULL; - } - if (wuffs_jpeg__decoder__initialize( - x, sizeof(wuffs_jpeg__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) { - free(x); - return NULL; - } - return x; -} - -size_t -sizeof__wuffs_jpeg__decoder() { - return sizeof(wuffs_jpeg__decoder); -} - -// ---------------- Function Implementations - -// -------- func jpeg.decoder.decode_idct - -static wuffs_base__empty_struct -wuffs_jpeg__decoder__decode_idct( - wuffs_jpeg__decoder* self, - wuffs_base__slice_u8 a_dst_buffer, - uint64_t a_dst_stride, - uint32_t a_b, - uint32_t a_q) { - uint32_t v_bq0 = 0; - uint32_t v_bq2 = 0; - uint32_t v_bq4 = 0; - uint32_t v_bq6 = 0; - uint32_t v_ca = 0; - uint32_t v_cb2 = 0; - uint32_t v_cb6 = 0; - uint32_t v_ccp = 0; - uint32_t v_ccm = 0; - uint32_t v_cd0 = 0; - uint32_t v_cd1 = 0; - uint32_t v_cd2 = 0; - uint32_t v_cd3 = 0; - uint32_t v_bq1 = 0; - uint32_t v_bq3 = 0; - uint32_t v_bq5 = 0; - uint32_t v_bq7 = 0; - uint32_t v_ci51 = 0; - uint32_t v_ci53 = 0; - uint32_t v_ci71 = 0; - uint32_t v_ci73 = 0; - uint32_t v_cj = 0; - uint32_t v_ck1 = 0; - uint32_t v_ck3 = 0; - uint32_t v_ck5 = 0; - uint32_t v_ck7 = 0; - uint32_t v_cl51 = 0; - uint32_t v_cl73 = 0; - uint32_t v_in0 = 0; - uint32_t v_in2 = 0; - uint32_t v_in4 = 0; - uint32_t v_in6 = 0; - uint32_t v_ra = 0; - uint32_t v_rb2 = 0; - uint32_t v_rb6 = 0; - uint32_t v_rcp = 0; - uint32_t v_rcm = 0; - uint32_t v_rd0 = 0; - uint32_t v_rd1 = 0; - uint32_t v_rd2 = 0; - uint32_t v_rd3 = 0; - uint32_t v_in1 = 0; - uint32_t v_in3 = 0; - uint32_t v_in5 = 0; - uint32_t v_in7 = 0; - uint32_t v_ri51 = 0; - uint32_t v_ri53 = 0; - uint32_t v_ri71 = 0; - uint32_t v_ri73 = 0; - uint32_t v_rj = 0; - uint32_t v_rk1 = 0; - uint32_t v_rk3 = 0; - uint32_t v_rk5 = 0; - uint32_t v_rk7 = 0; - uint32_t v_rl51 = 0; - uint32_t v_rl73 = 0; - uint32_t v_intermediate[64] = {0}; - - if (8 > a_dst_stride) { - return wuffs_base__make_empty_struct(); - } - v_bq2 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][16]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][16])))); - v_bq6 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][48]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][48])))); - v_ca = ((uint32_t)(((uint32_t)(v_bq2 + v_bq6)) * 4433)); - v_cb2 = ((uint32_t)(v_ca + ((uint32_t)(v_bq2 * 6270)))); - v_cb6 = ((uint32_t)(v_ca - ((uint32_t)(v_bq6 * 15137)))); - v_bq0 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][0]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][0])))); - v_bq4 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][32]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][32])))); - v_ccp = ((uint32_t)(((uint32_t)(v_bq0 + v_bq4)) << 13)); - v_ccm = ((uint32_t)(((uint32_t)(v_bq0 - v_bq4)) << 13)); - v_cd0 = ((uint32_t)(v_ccp + v_cb2)); - v_cd1 = ((uint32_t)(v_ccm + v_cb6)); - v_cd2 = ((uint32_t)(v_ccm - v_cb6)); - v_cd3 = ((uint32_t)(v_ccp - v_cb2)); - v_bq1 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][8]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][8])))); - v_bq3 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][24]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][24])))); - v_bq5 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][40]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][40])))); - v_bq7 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][56]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][56])))); - v_ci51 = ((uint32_t)(v_bq5 + v_bq1)); - v_ci53 = ((uint32_t)(v_bq5 + v_bq3)); - v_ci71 = ((uint32_t)(v_bq7 + v_bq1)); - v_ci73 = ((uint32_t)(v_bq7 + v_bq3)); - v_cj = ((uint32_t)(((uint32_t)(v_ci73 + v_ci51)) * 9633)); - v_ck1 = ((uint32_t)(v_bq1 * 12299)); - v_ck3 = ((uint32_t)(v_bq3 * 25172)); - v_ck5 = ((uint32_t)(v_bq5 * 16819)); - v_ck7 = ((uint32_t)(v_bq7 * 2446)); - v_ci51 *= 4294964100u; - v_ci53 *= 4294946301u; - v_ci71 *= 4294959923u; - v_ci73 *= 4294951227u; - v_cl51 = ((uint32_t)(v_ci51 + v_cj)); - v_cl73 = ((uint32_t)(v_ci73 + v_cj)); - v_ck1 += ((uint32_t)(v_ci71 + v_cl51)); - v_ck3 += ((uint32_t)(v_ci53 + v_cl73)); - v_ck5 += ((uint32_t)(v_ci53 + v_cl51)); - v_ck7 += ((uint32_t)(v_ci71 + v_cl73)); - v_intermediate[0] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 + v_ck1)) + 1024)), 11); - v_intermediate[56] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 - v_ck1)) + 1024)), 11); - v_intermediate[8] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 + v_ck3)) + 1024)), 11); - v_intermediate[48] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 - v_ck3)) + 1024)), 11); - v_intermediate[16] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 + v_ck5)) + 1024)), 11); - v_intermediate[40] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 - v_ck5)) + 1024)), 11); - v_intermediate[24] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 + v_ck7)) + 1024)), 11); - v_intermediate[32] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 - v_ck7)) + 1024)), 11); - v_bq2 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][17]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][17])))); - v_bq6 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][49]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][49])))); - v_ca = ((uint32_t)(((uint32_t)(v_bq2 + v_bq6)) * 4433)); - v_cb2 = ((uint32_t)(v_ca + ((uint32_t)(v_bq2 * 6270)))); - v_cb6 = ((uint32_t)(v_ca - ((uint32_t)(v_bq6 * 15137)))); - v_bq0 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][1]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][1])))); - v_bq4 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][33]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][33])))); - v_ccp = ((uint32_t)(((uint32_t)(v_bq0 + v_bq4)) << 13)); - v_ccm = ((uint32_t)(((uint32_t)(v_bq0 - v_bq4)) << 13)); - v_cd0 = ((uint32_t)(v_ccp + v_cb2)); - v_cd1 = ((uint32_t)(v_ccm + v_cb6)); - v_cd2 = ((uint32_t)(v_ccm - v_cb6)); - v_cd3 = ((uint32_t)(v_ccp - v_cb2)); - v_bq1 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][9]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][9])))); - v_bq3 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][25]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][25])))); - v_bq5 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][41]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][41])))); - v_bq7 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][57]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][57])))); - v_ci51 = ((uint32_t)(v_bq5 + v_bq1)); - v_ci53 = ((uint32_t)(v_bq5 + v_bq3)); - v_ci71 = ((uint32_t)(v_bq7 + v_bq1)); - v_ci73 = ((uint32_t)(v_bq7 + v_bq3)); - v_cj = ((uint32_t)(((uint32_t)(v_ci73 + v_ci51)) * 9633)); - v_ck1 = ((uint32_t)(v_bq1 * 12299)); - v_ck3 = ((uint32_t)(v_bq3 * 25172)); - v_ck5 = ((uint32_t)(v_bq5 * 16819)); - v_ck7 = ((uint32_t)(v_bq7 * 2446)); - v_ci51 *= 4294964100u; - v_ci53 *= 4294946301u; - v_ci71 *= 4294959923u; - v_ci73 *= 4294951227u; - v_cl51 = ((uint32_t)(v_ci51 + v_cj)); - v_cl73 = ((uint32_t)(v_ci73 + v_cj)); - v_ck1 += ((uint32_t)(v_ci71 + v_cl51)); - v_ck3 += ((uint32_t)(v_ci53 + v_cl73)); - v_ck5 += ((uint32_t)(v_ci53 + v_cl51)); - v_ck7 += ((uint32_t)(v_ci71 + v_cl73)); - v_intermediate[1] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 + v_ck1)) + 1024)), 11); - v_intermediate[57] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 - v_ck1)) + 1024)), 11); - v_intermediate[9] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 + v_ck3)) + 1024)), 11); - v_intermediate[49] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 - v_ck3)) + 1024)), 11); - v_intermediate[17] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 + v_ck5)) + 1024)), 11); - v_intermediate[41] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 - v_ck5)) + 1024)), 11); - v_intermediate[25] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 + v_ck7)) + 1024)), 11); - v_intermediate[33] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 - v_ck7)) + 1024)), 11); - v_bq2 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][18]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][18])))); - v_bq6 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][50]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][50])))); - v_ca = ((uint32_t)(((uint32_t)(v_bq2 + v_bq6)) * 4433)); - v_cb2 = ((uint32_t)(v_ca + ((uint32_t)(v_bq2 * 6270)))); - v_cb6 = ((uint32_t)(v_ca - ((uint32_t)(v_bq6 * 15137)))); - v_bq0 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][2]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][2])))); - v_bq4 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][34]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][34])))); - v_ccp = ((uint32_t)(((uint32_t)(v_bq0 + v_bq4)) << 13)); - v_ccm = ((uint32_t)(((uint32_t)(v_bq0 - v_bq4)) << 13)); - v_cd0 = ((uint32_t)(v_ccp + v_cb2)); - v_cd1 = ((uint32_t)(v_ccm + v_cb6)); - v_cd2 = ((uint32_t)(v_ccm - v_cb6)); - v_cd3 = ((uint32_t)(v_ccp - v_cb2)); - v_bq1 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][10]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][10])))); - v_bq3 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][26]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][26])))); - v_bq5 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][42]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][42])))); - v_bq7 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][58]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][58])))); - v_ci51 = ((uint32_t)(v_bq5 + v_bq1)); - v_ci53 = ((uint32_t)(v_bq5 + v_bq3)); - v_ci71 = ((uint32_t)(v_bq7 + v_bq1)); - v_ci73 = ((uint32_t)(v_bq7 + v_bq3)); - v_cj = ((uint32_t)(((uint32_t)(v_ci73 + v_ci51)) * 9633)); - v_ck1 = ((uint32_t)(v_bq1 * 12299)); - v_ck3 = ((uint32_t)(v_bq3 * 25172)); - v_ck5 = ((uint32_t)(v_bq5 * 16819)); - v_ck7 = ((uint32_t)(v_bq7 * 2446)); - v_ci51 *= 4294964100u; - v_ci53 *= 4294946301u; - v_ci71 *= 4294959923u; - v_ci73 *= 4294951227u; - v_cl51 = ((uint32_t)(v_ci51 + v_cj)); - v_cl73 = ((uint32_t)(v_ci73 + v_cj)); - v_ck1 += ((uint32_t)(v_ci71 + v_cl51)); - v_ck3 += ((uint32_t)(v_ci53 + v_cl73)); - v_ck5 += ((uint32_t)(v_ci53 + v_cl51)); - v_ck7 += ((uint32_t)(v_ci71 + v_cl73)); - v_intermediate[2] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 + v_ck1)) + 1024)), 11); - v_intermediate[58] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 - v_ck1)) + 1024)), 11); - v_intermediate[10] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 + v_ck3)) + 1024)), 11); - v_intermediate[50] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 - v_ck3)) + 1024)), 11); - v_intermediate[18] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 + v_ck5)) + 1024)), 11); - v_intermediate[42] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 - v_ck5)) + 1024)), 11); - v_intermediate[26] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 + v_ck7)) + 1024)), 11); - v_intermediate[34] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 - v_ck7)) + 1024)), 11); - v_bq2 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][19]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][19])))); - v_bq6 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][51]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][51])))); - v_ca = ((uint32_t)(((uint32_t)(v_bq2 + v_bq6)) * 4433)); - v_cb2 = ((uint32_t)(v_ca + ((uint32_t)(v_bq2 * 6270)))); - v_cb6 = ((uint32_t)(v_ca - ((uint32_t)(v_bq6 * 15137)))); - v_bq0 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][3]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][3])))); - v_bq4 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][35]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][35])))); - v_ccp = ((uint32_t)(((uint32_t)(v_bq0 + v_bq4)) << 13)); - v_ccm = ((uint32_t)(((uint32_t)(v_bq0 - v_bq4)) << 13)); - v_cd0 = ((uint32_t)(v_ccp + v_cb2)); - v_cd1 = ((uint32_t)(v_ccm + v_cb6)); - v_cd2 = ((uint32_t)(v_ccm - v_cb6)); - v_cd3 = ((uint32_t)(v_ccp - v_cb2)); - v_bq1 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][11]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][11])))); - v_bq3 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][27]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][27])))); - v_bq5 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][43]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][43])))); - v_bq7 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][59]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][59])))); - v_ci51 = ((uint32_t)(v_bq5 + v_bq1)); - v_ci53 = ((uint32_t)(v_bq5 + v_bq3)); - v_ci71 = ((uint32_t)(v_bq7 + v_bq1)); - v_ci73 = ((uint32_t)(v_bq7 + v_bq3)); - v_cj = ((uint32_t)(((uint32_t)(v_ci73 + v_ci51)) * 9633)); - v_ck1 = ((uint32_t)(v_bq1 * 12299)); - v_ck3 = ((uint32_t)(v_bq3 * 25172)); - v_ck5 = ((uint32_t)(v_bq5 * 16819)); - v_ck7 = ((uint32_t)(v_bq7 * 2446)); - v_ci51 *= 4294964100u; - v_ci53 *= 4294946301u; - v_ci71 *= 4294959923u; - v_ci73 *= 4294951227u; - v_cl51 = ((uint32_t)(v_ci51 + v_cj)); - v_cl73 = ((uint32_t)(v_ci73 + v_cj)); - v_ck1 += ((uint32_t)(v_ci71 + v_cl51)); - v_ck3 += ((uint32_t)(v_ci53 + v_cl73)); - v_ck5 += ((uint32_t)(v_ci53 + v_cl51)); - v_ck7 += ((uint32_t)(v_ci71 + v_cl73)); - v_intermediate[3] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 + v_ck1)) + 1024)), 11); - v_intermediate[59] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 - v_ck1)) + 1024)), 11); - v_intermediate[11] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 + v_ck3)) + 1024)), 11); - v_intermediate[51] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 - v_ck3)) + 1024)), 11); - v_intermediate[19] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 + v_ck5)) + 1024)), 11); - v_intermediate[43] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 - v_ck5)) + 1024)), 11); - v_intermediate[27] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 + v_ck7)) + 1024)), 11); - v_intermediate[35] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 - v_ck7)) + 1024)), 11); - v_bq2 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][20]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][20])))); - v_bq6 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][52]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][52])))); - v_ca = ((uint32_t)(((uint32_t)(v_bq2 + v_bq6)) * 4433)); - v_cb2 = ((uint32_t)(v_ca + ((uint32_t)(v_bq2 * 6270)))); - v_cb6 = ((uint32_t)(v_ca - ((uint32_t)(v_bq6 * 15137)))); - v_bq0 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][4]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][4])))); - v_bq4 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][36]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][36])))); - v_ccp = ((uint32_t)(((uint32_t)(v_bq0 + v_bq4)) << 13)); - v_ccm = ((uint32_t)(((uint32_t)(v_bq0 - v_bq4)) << 13)); - v_cd0 = ((uint32_t)(v_ccp + v_cb2)); - v_cd1 = ((uint32_t)(v_ccm + v_cb6)); - v_cd2 = ((uint32_t)(v_ccm - v_cb6)); - v_cd3 = ((uint32_t)(v_ccp - v_cb2)); - v_bq1 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][12]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][12])))); - v_bq3 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][28]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][28])))); - v_bq5 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][44]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][44])))); - v_bq7 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][60]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][60])))); - v_ci51 = ((uint32_t)(v_bq5 + v_bq1)); - v_ci53 = ((uint32_t)(v_bq5 + v_bq3)); - v_ci71 = ((uint32_t)(v_bq7 + v_bq1)); - v_ci73 = ((uint32_t)(v_bq7 + v_bq3)); - v_cj = ((uint32_t)(((uint32_t)(v_ci73 + v_ci51)) * 9633)); - v_ck1 = ((uint32_t)(v_bq1 * 12299)); - v_ck3 = ((uint32_t)(v_bq3 * 25172)); - v_ck5 = ((uint32_t)(v_bq5 * 16819)); - v_ck7 = ((uint32_t)(v_bq7 * 2446)); - v_ci51 *= 4294964100u; - v_ci53 *= 4294946301u; - v_ci71 *= 4294959923u; - v_ci73 *= 4294951227u; - v_cl51 = ((uint32_t)(v_ci51 + v_cj)); - v_cl73 = ((uint32_t)(v_ci73 + v_cj)); - v_ck1 += ((uint32_t)(v_ci71 + v_cl51)); - v_ck3 += ((uint32_t)(v_ci53 + v_cl73)); - v_ck5 += ((uint32_t)(v_ci53 + v_cl51)); - v_ck7 += ((uint32_t)(v_ci71 + v_cl73)); - v_intermediate[4] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 + v_ck1)) + 1024)), 11); - v_intermediate[60] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 - v_ck1)) + 1024)), 11); - v_intermediate[12] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 + v_ck3)) + 1024)), 11); - v_intermediate[52] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 - v_ck3)) + 1024)), 11); - v_intermediate[20] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 + v_ck5)) + 1024)), 11); - v_intermediate[44] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 - v_ck5)) + 1024)), 11); - v_intermediate[28] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 + v_ck7)) + 1024)), 11); - v_intermediate[36] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 - v_ck7)) + 1024)), 11); - v_bq2 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][21]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][21])))); - v_bq6 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][53]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][53])))); - v_ca = ((uint32_t)(((uint32_t)(v_bq2 + v_bq6)) * 4433)); - v_cb2 = ((uint32_t)(v_ca + ((uint32_t)(v_bq2 * 6270)))); - v_cb6 = ((uint32_t)(v_ca - ((uint32_t)(v_bq6 * 15137)))); - v_bq0 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][5]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][5])))); - v_bq4 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][37]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][37])))); - v_ccp = ((uint32_t)(((uint32_t)(v_bq0 + v_bq4)) << 13)); - v_ccm = ((uint32_t)(((uint32_t)(v_bq0 - v_bq4)) << 13)); - v_cd0 = ((uint32_t)(v_ccp + v_cb2)); - v_cd1 = ((uint32_t)(v_ccm + v_cb6)); - v_cd2 = ((uint32_t)(v_ccm - v_cb6)); - v_cd3 = ((uint32_t)(v_ccp - v_cb2)); - v_bq1 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][13]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][13])))); - v_bq3 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][29]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][29])))); - v_bq5 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][45]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][45])))); - v_bq7 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][61]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][61])))); - v_ci51 = ((uint32_t)(v_bq5 + v_bq1)); - v_ci53 = ((uint32_t)(v_bq5 + v_bq3)); - v_ci71 = ((uint32_t)(v_bq7 + v_bq1)); - v_ci73 = ((uint32_t)(v_bq7 + v_bq3)); - v_cj = ((uint32_t)(((uint32_t)(v_ci73 + v_ci51)) * 9633)); - v_ck1 = ((uint32_t)(v_bq1 * 12299)); - v_ck3 = ((uint32_t)(v_bq3 * 25172)); - v_ck5 = ((uint32_t)(v_bq5 * 16819)); - v_ck7 = ((uint32_t)(v_bq7 * 2446)); - v_ci51 *= 4294964100u; - v_ci53 *= 4294946301u; - v_ci71 *= 4294959923u; - v_ci73 *= 4294951227u; - v_cl51 = ((uint32_t)(v_ci51 + v_cj)); - v_cl73 = ((uint32_t)(v_ci73 + v_cj)); - v_ck1 += ((uint32_t)(v_ci71 + v_cl51)); - v_ck3 += ((uint32_t)(v_ci53 + v_cl73)); - v_ck5 += ((uint32_t)(v_ci53 + v_cl51)); - v_ck7 += ((uint32_t)(v_ci71 + v_cl73)); - v_intermediate[5] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 + v_ck1)) + 1024)), 11); - v_intermediate[61] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 - v_ck1)) + 1024)), 11); - v_intermediate[13] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 + v_ck3)) + 1024)), 11); - v_intermediate[53] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 - v_ck3)) + 1024)), 11); - v_intermediate[21] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 + v_ck5)) + 1024)), 11); - v_intermediate[45] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 - v_ck5)) + 1024)), 11); - v_intermediate[29] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 + v_ck7)) + 1024)), 11); - v_intermediate[37] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 - v_ck7)) + 1024)), 11); - v_bq2 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][22]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][22])))); - v_bq6 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][54]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][54])))); - v_ca = ((uint32_t)(((uint32_t)(v_bq2 + v_bq6)) * 4433)); - v_cb2 = ((uint32_t)(v_ca + ((uint32_t)(v_bq2 * 6270)))); - v_cb6 = ((uint32_t)(v_ca - ((uint32_t)(v_bq6 * 15137)))); - v_bq0 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][6]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][6])))); - v_bq4 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][38]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][38])))); - v_ccp = ((uint32_t)(((uint32_t)(v_bq0 + v_bq4)) << 13)); - v_ccm = ((uint32_t)(((uint32_t)(v_bq0 - v_bq4)) << 13)); - v_cd0 = ((uint32_t)(v_ccp + v_cb2)); - v_cd1 = ((uint32_t)(v_ccm + v_cb6)); - v_cd2 = ((uint32_t)(v_ccm - v_cb6)); - v_cd3 = ((uint32_t)(v_ccp - v_cb2)); - v_bq1 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][14]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][14])))); - v_bq3 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][30]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][30])))); - v_bq5 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][46]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][46])))); - v_bq7 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][62]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][62])))); - v_ci51 = ((uint32_t)(v_bq5 + v_bq1)); - v_ci53 = ((uint32_t)(v_bq5 + v_bq3)); - v_ci71 = ((uint32_t)(v_bq7 + v_bq1)); - v_ci73 = ((uint32_t)(v_bq7 + v_bq3)); - v_cj = ((uint32_t)(((uint32_t)(v_ci73 + v_ci51)) * 9633)); - v_ck1 = ((uint32_t)(v_bq1 * 12299)); - v_ck3 = ((uint32_t)(v_bq3 * 25172)); - v_ck5 = ((uint32_t)(v_bq5 * 16819)); - v_ck7 = ((uint32_t)(v_bq7 * 2446)); - v_ci51 *= 4294964100u; - v_ci53 *= 4294946301u; - v_ci71 *= 4294959923u; - v_ci73 *= 4294951227u; - v_cl51 = ((uint32_t)(v_ci51 + v_cj)); - v_cl73 = ((uint32_t)(v_ci73 + v_cj)); - v_ck1 += ((uint32_t)(v_ci71 + v_cl51)); - v_ck3 += ((uint32_t)(v_ci53 + v_cl73)); - v_ck5 += ((uint32_t)(v_ci53 + v_cl51)); - v_ck7 += ((uint32_t)(v_ci71 + v_cl73)); - v_intermediate[6] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 + v_ck1)) + 1024)), 11); - v_intermediate[62] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 - v_ck1)) + 1024)), 11); - v_intermediate[14] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 + v_ck3)) + 1024)), 11); - v_intermediate[54] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 - v_ck3)) + 1024)), 11); - v_intermediate[22] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 + v_ck5)) + 1024)), 11); - v_intermediate[46] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 - v_ck5)) + 1024)), 11); - v_intermediate[30] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 + v_ck7)) + 1024)), 11); - v_intermediate[38] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 - v_ck7)) + 1024)), 11); - v_bq2 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][23]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][23])))); - v_bq6 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][55]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][55])))); - v_ca = ((uint32_t)(((uint32_t)(v_bq2 + v_bq6)) * 4433)); - v_cb2 = ((uint32_t)(v_ca + ((uint32_t)(v_bq2 * 6270)))); - v_cb6 = ((uint32_t)(v_ca - ((uint32_t)(v_bq6 * 15137)))); - v_bq0 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][7]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][7])))); - v_bq4 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][39]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][39])))); - v_ccp = ((uint32_t)(((uint32_t)(v_bq0 + v_bq4)) << 13)); - v_ccm = ((uint32_t)(((uint32_t)(v_bq0 - v_bq4)) << 13)); - v_cd0 = ((uint32_t)(v_ccp + v_cb2)); - v_cd1 = ((uint32_t)(v_ccm + v_cb6)); - v_cd2 = ((uint32_t)(v_ccm - v_cb6)); - v_cd3 = ((uint32_t)(v_ccp - v_cb2)); - v_bq1 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][15]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][15])))); - v_bq3 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][31]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][31])))); - v_bq5 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][47]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][47])))); - v_bq7 = ((uint32_t)(wuffs_base__utility__sign_extend_convert_u16_u32(self->private_data.f_mcu_blocks[a_b][63]) * ((uint32_t)(self->private_impl.f_quant_tables[a_q][63])))); - v_ci51 = ((uint32_t)(v_bq5 + v_bq1)); - v_ci53 = ((uint32_t)(v_bq5 + v_bq3)); - v_ci71 = ((uint32_t)(v_bq7 + v_bq1)); - v_ci73 = ((uint32_t)(v_bq7 + v_bq3)); - v_cj = ((uint32_t)(((uint32_t)(v_ci73 + v_ci51)) * 9633)); - v_ck1 = ((uint32_t)(v_bq1 * 12299)); - v_ck3 = ((uint32_t)(v_bq3 * 25172)); - v_ck5 = ((uint32_t)(v_bq5 * 16819)); - v_ck7 = ((uint32_t)(v_bq7 * 2446)); - v_ci51 *= 4294964100u; - v_ci53 *= 4294946301u; - v_ci71 *= 4294959923u; - v_ci73 *= 4294951227u; - v_cl51 = ((uint32_t)(v_ci51 + v_cj)); - v_cl73 = ((uint32_t)(v_ci73 + v_cj)); - v_ck1 += ((uint32_t)(v_ci71 + v_cl51)); - v_ck3 += ((uint32_t)(v_ci53 + v_cl73)); - v_ck5 += ((uint32_t)(v_ci53 + v_cl51)); - v_ck7 += ((uint32_t)(v_ci71 + v_cl73)); - v_intermediate[7] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 + v_ck1)) + 1024)), 11); - v_intermediate[63] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd0 - v_ck1)) + 1024)), 11); - v_intermediate[15] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 + v_ck3)) + 1024)), 11); - v_intermediate[55] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd1 - v_ck3)) + 1024)), 11); - v_intermediate[23] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 + v_ck5)) + 1024)), 11); - v_intermediate[47] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd2 - v_ck5)) + 1024)), 11); - v_intermediate[31] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 + v_ck7)) + 1024)), 11); - v_intermediate[39] = wuffs_base__utility__sign_extend_rshift_u32(((uint32_t)(((uint32_t)(v_cd3 - v_ck7)) + 1024)), 11); - v_in2 = v_intermediate[2]; - v_in6 = v_intermediate[6]; - v_ra = ((uint32_t)(((uint32_t)(v_in2 + v_in6)) * 4433)); - v_rb2 = ((uint32_t)(v_ra + ((uint32_t)(v_in2 * 6270)))); - v_rb6 = ((uint32_t)(v_ra - ((uint32_t)(v_in6 * 15137)))); - v_in0 = v_intermediate[0]; - v_in4 = v_intermediate[4]; - v_rcp = ((uint32_t)(((uint32_t)(v_in0 + v_in4)) << 13)); - v_rcm = ((uint32_t)(((uint32_t)(v_in0 - v_in4)) << 13)); - v_rd0 = ((uint32_t)(v_rcp + v_rb2)); - v_rd1 = ((uint32_t)(v_rcm + v_rb6)); - v_rd2 = ((uint32_t)(v_rcm - v_rb6)); - v_rd3 = ((uint32_t)(v_rcp - v_rb2)); - v_in1 = v_intermediate[1]; - v_in3 = v_intermediate[3]; - v_in5 = v_intermediate[5]; - v_in7 = v_intermediate[7]; - v_ri51 = ((uint32_t)(v_in5 + v_in1)); - v_ri53 = ((uint32_t)(v_in5 + v_in3)); - v_ri71 = ((uint32_t)(v_in7 + v_in1)); - v_ri73 = ((uint32_t)(v_in7 + v_in3)); - v_rj = ((uint32_t)(((uint32_t)(v_ri73 + v_ri51)) * 9633)); - v_rk1 = ((uint32_t)(v_in1 * 12299)); - v_rk3 = ((uint32_t)(v_in3 * 25172)); - v_rk5 = ((uint32_t)(v_in5 * 16819)); - v_rk7 = ((uint32_t)(v_in7 * 2446)); - v_ri51 *= 4294964100u; - v_ri53 *= 4294946301u; - v_ri71 *= 4294959923u; - v_ri73 *= 4294951227u; - v_rl51 = ((uint32_t)(v_ri51 + v_rj)); - v_rl73 = ((uint32_t)(v_ri73 + v_rj)); - v_rk1 += ((uint32_t)(v_ri71 + v_rl51)); - v_rk3 += ((uint32_t)(v_ri53 + v_rl73)); - v_rk5 += ((uint32_t)(v_ri53 + v_rl51)); - v_rk7 += ((uint32_t)(v_ri71 + v_rl73)); - if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) { - return wuffs_base__make_empty_struct(); - } - a_dst_buffer.ptr[0] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 + v_rk1)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[7] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 - v_rk1)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[1] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 + v_rk3)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[6] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 - v_rk3)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[2] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 + v_rk5)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[5] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 - v_rk5)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[3] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 + v_rk7)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[4] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 - v_rk7)) + 131072)) >> 18) & 1023)]; - a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride); - v_in2 = v_intermediate[10]; - v_in6 = v_intermediate[14]; - v_ra = ((uint32_t)(((uint32_t)(v_in2 + v_in6)) * 4433)); - v_rb2 = ((uint32_t)(v_ra + ((uint32_t)(v_in2 * 6270)))); - v_rb6 = ((uint32_t)(v_ra - ((uint32_t)(v_in6 * 15137)))); - v_in0 = v_intermediate[8]; - v_in4 = v_intermediate[12]; - v_rcp = ((uint32_t)(((uint32_t)(v_in0 + v_in4)) << 13)); - v_rcm = ((uint32_t)(((uint32_t)(v_in0 - v_in4)) << 13)); - v_rd0 = ((uint32_t)(v_rcp + v_rb2)); - v_rd1 = ((uint32_t)(v_rcm + v_rb6)); - v_rd2 = ((uint32_t)(v_rcm - v_rb6)); - v_rd3 = ((uint32_t)(v_rcp - v_rb2)); - v_in1 = v_intermediate[9]; - v_in3 = v_intermediate[11]; - v_in5 = v_intermediate[13]; - v_in7 = v_intermediate[15]; - v_ri51 = ((uint32_t)(v_in5 + v_in1)); - v_ri53 = ((uint32_t)(v_in5 + v_in3)); - v_ri71 = ((uint32_t)(v_in7 + v_in1)); - v_ri73 = ((uint32_t)(v_in7 + v_in3)); - v_rj = ((uint32_t)(((uint32_t)(v_ri73 + v_ri51)) * 9633)); - v_rk1 = ((uint32_t)(v_in1 * 12299)); - v_rk3 = ((uint32_t)(v_in3 * 25172)); - v_rk5 = ((uint32_t)(v_in5 * 16819)); - v_rk7 = ((uint32_t)(v_in7 * 2446)); - v_ri51 *= 4294964100u; - v_ri53 *= 4294946301u; - v_ri71 *= 4294959923u; - v_ri73 *= 4294951227u; - v_rl51 = ((uint32_t)(v_ri51 + v_rj)); - v_rl73 = ((uint32_t)(v_ri73 + v_rj)); - v_rk1 += ((uint32_t)(v_ri71 + v_rl51)); - v_rk3 += ((uint32_t)(v_ri53 + v_rl73)); - v_rk5 += ((uint32_t)(v_ri53 + v_rl51)); - v_rk7 += ((uint32_t)(v_ri71 + v_rl73)); - if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) { - return wuffs_base__make_empty_struct(); - } - a_dst_buffer.ptr[0] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 + v_rk1)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[7] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 - v_rk1)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[1] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 + v_rk3)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[6] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 - v_rk3)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[2] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 + v_rk5)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[5] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 - v_rk5)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[3] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 + v_rk7)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[4] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 - v_rk7)) + 131072)) >> 18) & 1023)]; - a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride); - v_in2 = v_intermediate[18]; - v_in6 = v_intermediate[22]; - v_ra = ((uint32_t)(((uint32_t)(v_in2 + v_in6)) * 4433)); - v_rb2 = ((uint32_t)(v_ra + ((uint32_t)(v_in2 * 6270)))); - v_rb6 = ((uint32_t)(v_ra - ((uint32_t)(v_in6 * 15137)))); - v_in0 = v_intermediate[16]; - v_in4 = v_intermediate[20]; - v_rcp = ((uint32_t)(((uint32_t)(v_in0 + v_in4)) << 13)); - v_rcm = ((uint32_t)(((uint32_t)(v_in0 - v_in4)) << 13)); - v_rd0 = ((uint32_t)(v_rcp + v_rb2)); - v_rd1 = ((uint32_t)(v_rcm + v_rb6)); - v_rd2 = ((uint32_t)(v_rcm - v_rb6)); - v_rd3 = ((uint32_t)(v_rcp - v_rb2)); - v_in1 = v_intermediate[17]; - v_in3 = v_intermediate[19]; - v_in5 = v_intermediate[21]; - v_in7 = v_intermediate[23]; - v_ri51 = ((uint32_t)(v_in5 + v_in1)); - v_ri53 = ((uint32_t)(v_in5 + v_in3)); - v_ri71 = ((uint32_t)(v_in7 + v_in1)); - v_ri73 = ((uint32_t)(v_in7 + v_in3)); - v_rj = ((uint32_t)(((uint32_t)(v_ri73 + v_ri51)) * 9633)); - v_rk1 = ((uint32_t)(v_in1 * 12299)); - v_rk3 = ((uint32_t)(v_in3 * 25172)); - v_rk5 = ((uint32_t)(v_in5 * 16819)); - v_rk7 = ((uint32_t)(v_in7 * 2446)); - v_ri51 *= 4294964100u; - v_ri53 *= 4294946301u; - v_ri71 *= 4294959923u; - v_ri73 *= 4294951227u; - v_rl51 = ((uint32_t)(v_ri51 + v_rj)); - v_rl73 = ((uint32_t)(v_ri73 + v_rj)); - v_rk1 += ((uint32_t)(v_ri71 + v_rl51)); - v_rk3 += ((uint32_t)(v_ri53 + v_rl73)); - v_rk5 += ((uint32_t)(v_ri53 + v_rl51)); - v_rk7 += ((uint32_t)(v_ri71 + v_rl73)); - if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) { - return wuffs_base__make_empty_struct(); - } - a_dst_buffer.ptr[0] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 + v_rk1)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[7] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 - v_rk1)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[1] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 + v_rk3)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[6] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 - v_rk3)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[2] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 + v_rk5)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[5] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 - v_rk5)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[3] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 + v_rk7)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[4] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 - v_rk7)) + 131072)) >> 18) & 1023)]; - a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride); - v_in2 = v_intermediate[26]; - v_in6 = v_intermediate[30]; - v_ra = ((uint32_t)(((uint32_t)(v_in2 + v_in6)) * 4433)); - v_rb2 = ((uint32_t)(v_ra + ((uint32_t)(v_in2 * 6270)))); - v_rb6 = ((uint32_t)(v_ra - ((uint32_t)(v_in6 * 15137)))); - v_in0 = v_intermediate[24]; - v_in4 = v_intermediate[28]; - v_rcp = ((uint32_t)(((uint32_t)(v_in0 + v_in4)) << 13)); - v_rcm = ((uint32_t)(((uint32_t)(v_in0 - v_in4)) << 13)); - v_rd0 = ((uint32_t)(v_rcp + v_rb2)); - v_rd1 = ((uint32_t)(v_rcm + v_rb6)); - v_rd2 = ((uint32_t)(v_rcm - v_rb6)); - v_rd3 = ((uint32_t)(v_rcp - v_rb2)); - v_in1 = v_intermediate[25]; - v_in3 = v_intermediate[27]; - v_in5 = v_intermediate[29]; - v_in7 = v_intermediate[31]; - v_ri51 = ((uint32_t)(v_in5 + v_in1)); - v_ri53 = ((uint32_t)(v_in5 + v_in3)); - v_ri71 = ((uint32_t)(v_in7 + v_in1)); - v_ri73 = ((uint32_t)(v_in7 + v_in3)); - v_rj = ((uint32_t)(((uint32_t)(v_ri73 + v_ri51)) * 9633)); - v_rk1 = ((uint32_t)(v_in1 * 12299)); - v_rk3 = ((uint32_t)(v_in3 * 25172)); - v_rk5 = ((uint32_t)(v_in5 * 16819)); - v_rk7 = ((uint32_t)(v_in7 * 2446)); - v_ri51 *= 4294964100u; - v_ri53 *= 4294946301u; - v_ri71 *= 4294959923u; - v_ri73 *= 4294951227u; - v_rl51 = ((uint32_t)(v_ri51 + v_rj)); - v_rl73 = ((uint32_t)(v_ri73 + v_rj)); - v_rk1 += ((uint32_t)(v_ri71 + v_rl51)); - v_rk3 += ((uint32_t)(v_ri53 + v_rl73)); - v_rk5 += ((uint32_t)(v_ri53 + v_rl51)); - v_rk7 += ((uint32_t)(v_ri71 + v_rl73)); - if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) { - return wuffs_base__make_empty_struct(); - } - a_dst_buffer.ptr[0] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 + v_rk1)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[7] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 - v_rk1)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[1] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 + v_rk3)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[6] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 - v_rk3)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[2] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 + v_rk5)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[5] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 - v_rk5)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[3] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 + v_rk7)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[4] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 - v_rk7)) + 131072)) >> 18) & 1023)]; - a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride); - v_in2 = v_intermediate[34]; - v_in6 = v_intermediate[38]; - v_ra = ((uint32_t)(((uint32_t)(v_in2 + v_in6)) * 4433)); - v_rb2 = ((uint32_t)(v_ra + ((uint32_t)(v_in2 * 6270)))); - v_rb6 = ((uint32_t)(v_ra - ((uint32_t)(v_in6 * 15137)))); - v_in0 = v_intermediate[32]; - v_in4 = v_intermediate[36]; - v_rcp = ((uint32_t)(((uint32_t)(v_in0 + v_in4)) << 13)); - v_rcm = ((uint32_t)(((uint32_t)(v_in0 - v_in4)) << 13)); - v_rd0 = ((uint32_t)(v_rcp + v_rb2)); - v_rd1 = ((uint32_t)(v_rcm + v_rb6)); - v_rd2 = ((uint32_t)(v_rcm - v_rb6)); - v_rd3 = ((uint32_t)(v_rcp - v_rb2)); - v_in1 = v_intermediate[33]; - v_in3 = v_intermediate[35]; - v_in5 = v_intermediate[37]; - v_in7 = v_intermediate[39]; - v_ri51 = ((uint32_t)(v_in5 + v_in1)); - v_ri53 = ((uint32_t)(v_in5 + v_in3)); - v_ri71 = ((uint32_t)(v_in7 + v_in1)); - v_ri73 = ((uint32_t)(v_in7 + v_in3)); - v_rj = ((uint32_t)(((uint32_t)(v_ri73 + v_ri51)) * 9633)); - v_rk1 = ((uint32_t)(v_in1 * 12299)); - v_rk3 = ((uint32_t)(v_in3 * 25172)); - v_rk5 = ((uint32_t)(v_in5 * 16819)); - v_rk7 = ((uint32_t)(v_in7 * 2446)); - v_ri51 *= 4294964100u; - v_ri53 *= 4294946301u; - v_ri71 *= 4294959923u; - v_ri73 *= 4294951227u; - v_rl51 = ((uint32_t)(v_ri51 + v_rj)); - v_rl73 = ((uint32_t)(v_ri73 + v_rj)); - v_rk1 += ((uint32_t)(v_ri71 + v_rl51)); - v_rk3 += ((uint32_t)(v_ri53 + v_rl73)); - v_rk5 += ((uint32_t)(v_ri53 + v_rl51)); - v_rk7 += ((uint32_t)(v_ri71 + v_rl73)); - if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) { - return wuffs_base__make_empty_struct(); - } - a_dst_buffer.ptr[0] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 + v_rk1)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[7] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 - v_rk1)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[1] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 + v_rk3)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[6] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 - v_rk3)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[2] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 + v_rk5)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[5] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 - v_rk5)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[3] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 + v_rk7)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[4] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 - v_rk7)) + 131072)) >> 18) & 1023)]; - a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride); - v_in2 = v_intermediate[42]; - v_in6 = v_intermediate[46]; - v_ra = ((uint32_t)(((uint32_t)(v_in2 + v_in6)) * 4433)); - v_rb2 = ((uint32_t)(v_ra + ((uint32_t)(v_in2 * 6270)))); - v_rb6 = ((uint32_t)(v_ra - ((uint32_t)(v_in6 * 15137)))); - v_in0 = v_intermediate[40]; - v_in4 = v_intermediate[44]; - v_rcp = ((uint32_t)(((uint32_t)(v_in0 + v_in4)) << 13)); - v_rcm = ((uint32_t)(((uint32_t)(v_in0 - v_in4)) << 13)); - v_rd0 = ((uint32_t)(v_rcp + v_rb2)); - v_rd1 = ((uint32_t)(v_rcm + v_rb6)); - v_rd2 = ((uint32_t)(v_rcm - v_rb6)); - v_rd3 = ((uint32_t)(v_rcp - v_rb2)); - v_in1 = v_intermediate[41]; - v_in3 = v_intermediate[43]; - v_in5 = v_intermediate[45]; - v_in7 = v_intermediate[47]; - v_ri51 = ((uint32_t)(v_in5 + v_in1)); - v_ri53 = ((uint32_t)(v_in5 + v_in3)); - v_ri71 = ((uint32_t)(v_in7 + v_in1)); - v_ri73 = ((uint32_t)(v_in7 + v_in3)); - v_rj = ((uint32_t)(((uint32_t)(v_ri73 + v_ri51)) * 9633)); - v_rk1 = ((uint32_t)(v_in1 * 12299)); - v_rk3 = ((uint32_t)(v_in3 * 25172)); - v_rk5 = ((uint32_t)(v_in5 * 16819)); - v_rk7 = ((uint32_t)(v_in7 * 2446)); - v_ri51 *= 4294964100u; - v_ri53 *= 4294946301u; - v_ri71 *= 4294959923u; - v_ri73 *= 4294951227u; - v_rl51 = ((uint32_t)(v_ri51 + v_rj)); - v_rl73 = ((uint32_t)(v_ri73 + v_rj)); - v_rk1 += ((uint32_t)(v_ri71 + v_rl51)); - v_rk3 += ((uint32_t)(v_ri53 + v_rl73)); - v_rk5 += ((uint32_t)(v_ri53 + v_rl51)); - v_rk7 += ((uint32_t)(v_ri71 + v_rl73)); - if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) { - return wuffs_base__make_empty_struct(); - } - a_dst_buffer.ptr[0] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 + v_rk1)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[7] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 - v_rk1)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[1] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 + v_rk3)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[6] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 - v_rk3)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[2] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 + v_rk5)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[5] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 - v_rk5)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[3] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 + v_rk7)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[4] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 - v_rk7)) + 131072)) >> 18) & 1023)]; - a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride); - v_in2 = v_intermediate[50]; - v_in6 = v_intermediate[54]; - v_ra = ((uint32_t)(((uint32_t)(v_in2 + v_in6)) * 4433)); - v_rb2 = ((uint32_t)(v_ra + ((uint32_t)(v_in2 * 6270)))); - v_rb6 = ((uint32_t)(v_ra - ((uint32_t)(v_in6 * 15137)))); - v_in0 = v_intermediate[48]; - v_in4 = v_intermediate[52]; - v_rcp = ((uint32_t)(((uint32_t)(v_in0 + v_in4)) << 13)); - v_rcm = ((uint32_t)(((uint32_t)(v_in0 - v_in4)) << 13)); - v_rd0 = ((uint32_t)(v_rcp + v_rb2)); - v_rd1 = ((uint32_t)(v_rcm + v_rb6)); - v_rd2 = ((uint32_t)(v_rcm - v_rb6)); - v_rd3 = ((uint32_t)(v_rcp - v_rb2)); - v_in1 = v_intermediate[49]; - v_in3 = v_intermediate[51]; - v_in5 = v_intermediate[53]; - v_in7 = v_intermediate[55]; - v_ri51 = ((uint32_t)(v_in5 + v_in1)); - v_ri53 = ((uint32_t)(v_in5 + v_in3)); - v_ri71 = ((uint32_t)(v_in7 + v_in1)); - v_ri73 = ((uint32_t)(v_in7 + v_in3)); - v_rj = ((uint32_t)(((uint32_t)(v_ri73 + v_ri51)) * 9633)); - v_rk1 = ((uint32_t)(v_in1 * 12299)); - v_rk3 = ((uint32_t)(v_in3 * 25172)); - v_rk5 = ((uint32_t)(v_in5 * 16819)); - v_rk7 = ((uint32_t)(v_in7 * 2446)); - v_ri51 *= 4294964100u; - v_ri53 *= 4294946301u; - v_ri71 *= 4294959923u; - v_ri73 *= 4294951227u; - v_rl51 = ((uint32_t)(v_ri51 + v_rj)); - v_rl73 = ((uint32_t)(v_ri73 + v_rj)); - v_rk1 += ((uint32_t)(v_ri71 + v_rl51)); - v_rk3 += ((uint32_t)(v_ri53 + v_rl73)); - v_rk5 += ((uint32_t)(v_ri53 + v_rl51)); - v_rk7 += ((uint32_t)(v_ri71 + v_rl73)); - if (a_dst_stride > ((uint64_t)(a_dst_buffer.len))) { - return wuffs_base__make_empty_struct(); - } - a_dst_buffer.ptr[0] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 + v_rk1)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[7] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 - v_rk1)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[1] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 + v_rk3)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[6] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 - v_rk3)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[2] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 + v_rk5)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[5] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 - v_rk5)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[3] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 + v_rk7)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[4] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 - v_rk7)) + 131072)) >> 18) & 1023)]; - a_dst_buffer = wuffs_base__slice_u8__subslice_i(a_dst_buffer, a_dst_stride); - v_in2 = v_intermediate[58]; - v_in6 = v_intermediate[62]; - v_ra = ((uint32_t)(((uint32_t)(v_in2 + v_in6)) * 4433)); - v_rb2 = ((uint32_t)(v_ra + ((uint32_t)(v_in2 * 6270)))); - v_rb6 = ((uint32_t)(v_ra - ((uint32_t)(v_in6 * 15137)))); - v_in0 = v_intermediate[56]; - v_in4 = v_intermediate[60]; - v_rcp = ((uint32_t)(((uint32_t)(v_in0 + v_in4)) << 13)); - v_rcm = ((uint32_t)(((uint32_t)(v_in0 - v_in4)) << 13)); - v_rd0 = ((uint32_t)(v_rcp + v_rb2)); - v_rd1 = ((uint32_t)(v_rcm + v_rb6)); - v_rd2 = ((uint32_t)(v_rcm - v_rb6)); - v_rd3 = ((uint32_t)(v_rcp - v_rb2)); - v_in1 = v_intermediate[57]; - v_in3 = v_intermediate[59]; - v_in5 = v_intermediate[61]; - v_in7 = v_intermediate[63]; - v_ri51 = ((uint32_t)(v_in5 + v_in1)); - v_ri53 = ((uint32_t)(v_in5 + v_in3)); - v_ri71 = ((uint32_t)(v_in7 + v_in1)); - v_ri73 = ((uint32_t)(v_in7 + v_in3)); - v_rj = ((uint32_t)(((uint32_t)(v_ri73 + v_ri51)) * 9633)); - v_rk1 = ((uint32_t)(v_in1 * 12299)); - v_rk3 = ((uint32_t)(v_in3 * 25172)); - v_rk5 = ((uint32_t)(v_in5 * 16819)); - v_rk7 = ((uint32_t)(v_in7 * 2446)); - v_ri51 *= 4294964100u; - v_ri53 *= 4294946301u; - v_ri71 *= 4294959923u; - v_ri73 *= 4294951227u; - v_rl51 = ((uint32_t)(v_ri51 + v_rj)); - v_rl73 = ((uint32_t)(v_ri73 + v_rj)); - v_rk1 += ((uint32_t)(v_ri71 + v_rl51)); - v_rk3 += ((uint32_t)(v_ri53 + v_rl73)); - v_rk5 += ((uint32_t)(v_ri53 + v_rl51)); - v_rk7 += ((uint32_t)(v_ri71 + v_rl73)); - if (8 > ((uint64_t)(a_dst_buffer.len))) { - return wuffs_base__make_empty_struct(); - } - a_dst_buffer.ptr[0] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 + v_rk1)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[7] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd0 - v_rk1)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[1] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 + v_rk3)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[6] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd1 - v_rk3)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[2] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 + v_rk5)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[5] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd2 - v_rk5)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[3] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 + v_rk7)) + 131072)) >> 18) & 1023)]; - a_dst_buffer.ptr[4] = WUFFS_JPEG__BIAS_AND_CLAMP[((((uint32_t)(((uint32_t)(v_rd3 - v_rk7)) + 131072)) >> 18) & 1023)]; - return wuffs_base__make_empty_struct(); -} - -// -------- func jpeg.decoder.set_quirk - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_jpeg__decoder__set_quirk( - wuffs_jpeg__decoder* self, - uint32_t a_key, - uint64_t a_value) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - - return wuffs_base__make_status(wuffs_base__error__unsupported_option); -} - -// -------- func jpeg.decoder.decode_image_config - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_jpeg__decoder__decode_image_config( - wuffs_jpeg__decoder* self, - wuffs_base__image_config* a_dst, - wuffs_base__io_buffer* a_src) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - if (!a_src) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - if ((self->private_impl.active_coroutine != 0) && - (self->private_impl.active_coroutine != 1)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); - } - self->private_impl.active_coroutine = 0; - wuffs_base__status status = wuffs_base__make_status(NULL); - - wuffs_base__status v_status = wuffs_base__make_status(NULL); - - uint32_t coro_susp_point = self->private_impl.p_decode_image_config[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - while (true) { - { - wuffs_base__status t_0 = wuffs_jpeg__decoder__do_decode_image_config(self, a_dst, a_src); - v_status = t_0; - } - if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { - status = wuffs_base__make_status(wuffs_jpeg__error__truncated_input); - goto exit; - } - status = v_status; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); - } - - ok: - self->private_impl.p_decode_image_config[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0; - - goto exit; - exit: - if (wuffs_base__status__is_error(&status)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - } - return status; -} - -// -------- func jpeg.decoder.do_decode_image_config - -static wuffs_base__status -wuffs_jpeg__decoder__do_decode_image_config( - wuffs_jpeg__decoder* self, - wuffs_base__image_config* a_dst, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint8_t v_c = 0; - uint8_t v_marker = 0; - uint32_t v_pixfmt = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config[0]; - if (coro_susp_point) { - v_marker = self->private_data.s_do_decode_image_config[0].v_marker; - } - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - if (self->private_impl.f_call_sequence != 0) { - status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence); - goto exit; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_0 = *iop_a_src++; - v_c = t_0; - } - if (v_c != 255) { - status = wuffs_base__make_status(wuffs_jpeg__error__bad_header); - goto exit; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_1 = *iop_a_src++; - v_c = t_1; - } - if (v_c != 216) { - status = wuffs_base__make_status(wuffs_jpeg__error__bad_header); - goto exit; - } - label__0__continue:; - while (true) { - while (true) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_2 = *iop_a_src++; - v_c = t_2; - } - if (v_c == 255) { - goto label__1__break; - } - } - label__1__break:; - while (true) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_3 = *iop_a_src++; - v_c = t_3; - } - if (v_c != 255) { - v_marker = v_c; - goto label__2__break; - } - } - label__2__break:; - if (v_marker == 0) { - goto label__0__continue; - } else if ((208 <= v_marker) && (v_marker <= 215)) { - goto label__0__continue; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); - uint32_t t_4; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { - t_4 = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src))); - iop_a_src += 2; - } else { - self->private_data.s_do_decode_image_config[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; - uint32_t num_bits_4 = ((uint32_t)(*scratch & 0xFF)); - *scratch >>= 8; - *scratch <<= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_4); - if (num_bits_4 == 8) { - t_4 = ((uint32_t)(*scratch >> 48)); - break; - } - num_bits_4 += 8; - *scratch |= ((uint64_t)(num_bits_4)); - } - } - self->private_impl.f_payload_length = t_4; - } - if (self->private_impl.f_payload_length < 2) { - status = wuffs_base__make_status(wuffs_jpeg__error__bad_marker); - goto exit; - } - self->private_impl.f_payload_length -= 2; - if (v_marker < 192) { - status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_marker); - goto exit; - } else if (v_marker < 208) { - if (v_marker <= 194) { - if (self->private_impl.f_sof_marker != 0) { - status = wuffs_base__make_status(wuffs_jpeg__error__bad_sof_marker); - goto exit; - } - self->private_impl.f_sof_marker = v_marker; - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7); - status = wuffs_jpeg__decoder__decode_sof(self, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - goto label__0__break; - } else if (v_marker == 195) { - status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_lossless_coding); - goto exit; - } else if (v_marker == 196) { - status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker); - goto exit; - } else if ((197 <= v_marker) && (v_marker <= 199)) { - status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_hierarchical_coding); - goto exit; - } else if (v_marker == 200) { - status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_marker); - goto exit; - } else { - status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_arithmetic_coding); - goto exit; - } - } else if (v_marker < 224) { - if (v_marker < 218) { - status = wuffs_base__make_status(wuffs_jpeg__error__bad_marker); - goto exit; - } else if (v_marker == 218) { - status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker); - goto exit; - } else if (v_marker == 219) { - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8); - status = wuffs_jpeg__decoder__decode_dqt(self, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - goto label__0__continue; - } else if (v_marker == 221) { - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9); - status = wuffs_jpeg__decoder__decode_dri(self, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - goto label__0__continue; - } else { - status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_marker); - goto exit; - } - } else if (v_marker < 240) { - } else { - if (v_marker == 254) { - } else { - status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_marker); - goto exit; - } - } - self->private_data.s_do_decode_image_config[0].scratch = self->private_impl.f_payload_length; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10); - if (self->private_data.s_do_decode_image_config[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { - self->private_data.s_do_decode_image_config[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); - iop_a_src = io2_a_src; - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - iop_a_src += self->private_data.s_do_decode_image_config[0].scratch; - self->private_impl.f_payload_length = 0; - } - label__0__break:; - self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))); - if (a_dst != NULL) { - v_pixfmt = 536870920; - if (self->private_impl.f_num_components > 1) { - v_pixfmt = 2415954056; - } - wuffs_base__image_config__set( - a_dst, - v_pixfmt, - 0, - self->private_impl.f_width, - self->private_impl.f_height, - self->private_impl.f_frame_config_io_position, - true); - } - self->private_impl.f_call_sequence = 32; - - goto ok; - ok: - self->private_impl.p_do_decode_image_config[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_do_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_data.s_do_decode_image_config[0].v_marker = v_marker; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func jpeg.decoder.decode_dqt - -static wuffs_base__status -wuffs_jpeg__decoder__decode_dqt( - wuffs_jpeg__decoder* self, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint8_t v_c = 0; - uint8_t v_q = 0; - uint32_t v_i = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_decode_dqt[0]; - if (coro_susp_point) { - v_q = self->private_data.s_decode_dqt[0].v_q; - v_i = self->private_data.s_decode_dqt[0].v_i; - } - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - while (self->private_impl.f_payload_length > 0) { - self->private_impl.f_payload_length -= 1; - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_0 = *iop_a_src++; - v_c = t_0; - } - if ((v_c & 15) > 3) { - status = wuffs_base__make_status(wuffs_jpeg__error__bad_dqt_marker); - goto exit; - } - v_q = (v_c & 15); - if ((v_c >> 4) == 1) { - status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_precision); - goto exit; - } else if (((v_c >> 4) > 1) || (self->private_impl.f_payload_length < 64)) { - status = wuffs_base__make_status(wuffs_jpeg__error__bad_dqt_marker); - goto exit; - } - self->private_impl.f_payload_length -= 64; - v_i = 0; - while (v_i < 64) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_1 = *iop_a_src++; - self->private_impl.f_quant_tables[v_q][WUFFS_JPEG__UNZIG[v_i]] = t_1; - } - v_i += 1; - } - self->private_impl.f_seen_dqt[v_q] = true; - if (self->private_impl.f_sof_marker == 0) { - v_i = 0; - while (v_i < 64) { - self->private_impl.f_saved_quant_tables[v_q][v_i] = self->private_impl.f_quant_tables[v_q][v_i]; - v_i += 1; - } - self->private_impl.f_saved_seen_dqt[v_q] = true; - } - } - - goto ok; - ok: - self->private_impl.p_decode_dqt[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_dqt[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_data.s_decode_dqt[0].v_q = v_q; - self->private_data.s_decode_dqt[0].v_i = v_i; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func jpeg.decoder.decode_dri - -static wuffs_base__status -wuffs_jpeg__decoder__decode_dri( - wuffs_jpeg__decoder* self, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_decode_dri[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - if (self->private_impl.f_payload_length != 2) { - status = wuffs_base__make_status(wuffs_jpeg__error__bad_dri_marker); - goto exit; - } - self->private_impl.f_payload_length = 0; - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - uint16_t t_0; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { - t_0 = wuffs_base__peek_u16be__no_bounds_check(iop_a_src); - iop_a_src += 2; - } else { - self->private_data.s_decode_dri[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_decode_dri[0].scratch; - uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFF)); - *scratch >>= 8; - *scratch <<= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0); - if (num_bits_0 == 8) { - t_0 = ((uint16_t)(*scratch >> 48)); - break; - } - num_bits_0 += 8; - *scratch |= ((uint64_t)(num_bits_0)); - } - } - self->private_impl.f_restart_interval = t_0; - } - if (self->private_impl.f_sof_marker == 0) { - self->private_impl.f_saved_restart_interval = self->private_impl.f_restart_interval; - } - - goto ok; - ok: - self->private_impl.p_decode_dri[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_dri[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func jpeg.decoder.decode_sof - -static wuffs_base__status -wuffs_jpeg__decoder__decode_sof( - wuffs_jpeg__decoder* self, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint8_t v_c = 0; - uint8_t v_comp_h = 0; - uint8_t v_comp_v = 0; - uint32_t v_i = 0; - uint32_t v_j = 0; - bool v_has_h24 = false; - bool v_has_h3 = false; - bool v_has_v24 = false; - bool v_has_v3 = false; - uint32_t v_upper_bound = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_decode_sof[0]; - if (coro_susp_point) { - v_i = self->private_data.s_decode_sof[0].v_i; - } - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - if (self->private_impl.f_payload_length < 6) { - status = wuffs_base__make_status(wuffs_jpeg__error__bad_sof_marker); - goto exit; - } - self->private_impl.f_payload_length -= 6; - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_0 = *iop_a_src++; - v_c = t_0; - } - if (v_c == 8) { - } else if (v_c == 12) { - status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_precision_12_bits); - goto exit; - } else if (v_c == 16) { - status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_precision_16_bits); - goto exit; - } else { - status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_precision); - goto exit; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - uint32_t t_1; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { - t_1 = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src))); - iop_a_src += 2; - } else { - self->private_data.s_decode_sof[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_decode_sof[0].scratch; - uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFF)); - *scratch >>= 8; - *scratch <<= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1); - if (num_bits_1 == 8) { - t_1 = ((uint32_t)(*scratch >> 48)); - break; - } - num_bits_1 += 8; - *scratch |= ((uint64_t)(num_bits_1)); - } - } - self->private_impl.f_height = t_1; - } - if (self->private_impl.f_height == 0) { - status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_implicit_height); - goto exit; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); - uint32_t t_2; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { - t_2 = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src))); - iop_a_src += 2; - } else { - self->private_data.s_decode_sof[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_decode_sof[0].scratch; - uint32_t num_bits_2 = ((uint32_t)(*scratch & 0xFF)); - *scratch >>= 8; - *scratch <<= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_2); - if (num_bits_2 == 8) { - t_2 = ((uint32_t)(*scratch >> 48)); - break; - } - num_bits_2 += 8; - *scratch |= ((uint64_t)(num_bits_2)); - } - } - self->private_impl.f_width = t_2; - } - if (self->private_impl.f_width == 0) { - status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension); - goto exit; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_3 = *iop_a_src++; - v_c = t_3; - } - if ((v_c == 0) || (v_c > 4)) { - status = wuffs_base__make_status(wuffs_jpeg__error__bad_sof_marker); - goto exit; - } - self->private_impl.f_num_components = ((uint32_t)(v_c)); - if (self->private_impl.f_payload_length != (3 * self->private_impl.f_num_components)) { - status = wuffs_base__make_status(wuffs_jpeg__error__bad_sof_marker); - goto exit; - } - self->private_impl.f_payload_length = 0; - v_i = 0; - while (v_i < self->private_impl.f_num_components) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_4 = *iop_a_src++; - self->private_impl.f_components_c[v_i] = t_4; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_5 = *iop_a_src++; - v_c = t_5; - } - v_comp_h = (v_c >> 4); - v_comp_v = (v_c & 15); - if ((v_comp_h == 0) || - (v_comp_h > 4) || - (v_comp_v == 0) || - (v_comp_v > 4)) { - status = wuffs_base__make_status(wuffs_jpeg__error__bad_sof_marker); - goto exit; - } - self->private_impl.f_components_h[v_i] = v_comp_h; - if (self->private_impl.f_max_incl_components_h < self->private_impl.f_components_h[v_i]) { - self->private_impl.f_max_incl_components_h = self->private_impl.f_components_h[v_i]; - } - self->private_impl.f_components_v[v_i] = v_comp_v; - if (self->private_impl.f_max_incl_components_v < self->private_impl.f_components_v[v_i]) { - self->private_impl.f_max_incl_components_v = self->private_impl.f_components_v[v_i]; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_6 = *iop_a_src++; - v_c = t_6; - } - if (v_c >= 4) { - status = wuffs_base__make_status(wuffs_jpeg__error__bad_sof_marker); - goto exit; - } - self->private_impl.f_components_tq[v_i] = v_c; - v_j = 0; - while (v_j < v_i) { - if (self->private_impl.f_components_c[v_j] == self->private_impl.f_components_c[v_i]) { - status = wuffs_base__make_status(wuffs_jpeg__error__bad_sof_marker); - goto exit; - } - v_j += 1; - } - v_i += 1; - } - if (self->private_impl.f_num_components == 1) { - self->private_impl.f_max_incl_components_h = 1; - self->private_impl.f_max_incl_components_v = 1; - self->private_impl.f_components_h[0] = 1; - self->private_impl.f_components_v[0] = 1; - } else { - v_has_h24 = false; - v_has_h3 = false; - v_has_v24 = false; - v_has_v3 = false; - v_i = 0; - while (v_i < self->private_impl.f_num_components) { - v_has_h24 = (v_has_h24 || (self->private_impl.f_components_h[v_i] == 2) || (self->private_impl.f_components_h[v_i] == 4)); - v_has_h3 = (v_has_h3 || (self->private_impl.f_components_h[v_i] == 3)); - v_has_v24 = (v_has_v24 || (self->private_impl.f_components_v[v_i] == 2) || (self->private_impl.f_components_v[v_i] == 4)); - v_has_v3 = (v_has_v3 || (self->private_impl.f_components_v[v_i] == 3)); - v_i += 1; - } - if ((v_has_h24 && v_has_h3) || (v_has_v24 && v_has_v3)) { - status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_fractional_sampling); - goto exit; - } - } - if (self->private_impl.f_max_incl_components_h == 1) { - self->private_impl.f_width_in_mcus = ((self->private_impl.f_width + 7) / 8); - } else if (self->private_impl.f_max_incl_components_h == 2) { - self->private_impl.f_width_in_mcus = ((self->private_impl.f_width + 15) / 16); - } else if (self->private_impl.f_max_incl_components_h == 3) { - self->private_impl.f_width_in_mcus = ((self->private_impl.f_width + 23) / 24); - } else { - self->private_impl.f_width_in_mcus = ((self->private_impl.f_width + 31) / 32); - } - if (self->private_impl.f_max_incl_components_v == 1) { - self->private_impl.f_height_in_mcus = ((self->private_impl.f_height + 7) / 8); - } else if (self->private_impl.f_max_incl_components_v == 2) { - self->private_impl.f_height_in_mcus = ((self->private_impl.f_height + 15) / 16); - } else if (self->private_impl.f_max_incl_components_v == 3) { - self->private_impl.f_height_in_mcus = ((self->private_impl.f_height + 23) / 24); - } else { - self->private_impl.f_height_in_mcus = ((self->private_impl.f_height + 31) / 32); - } - v_upper_bound = 65544; - self->private_impl.f_components_workbuf_widths[0] = wuffs_base__u32__min(v_upper_bound, (8 * self->private_impl.f_width_in_mcus * ((uint32_t)(self->private_impl.f_components_h[0])))); - self->private_impl.f_components_workbuf_widths[1] = wuffs_base__u32__min(v_upper_bound, (8 * self->private_impl.f_width_in_mcus * ((uint32_t)(self->private_impl.f_components_h[1])))); - self->private_impl.f_components_workbuf_widths[2] = wuffs_base__u32__min(v_upper_bound, (8 * self->private_impl.f_width_in_mcus * ((uint32_t)(self->private_impl.f_components_h[2])))); - self->private_impl.f_components_workbuf_widths[3] = wuffs_base__u32__min(v_upper_bound, (8 * self->private_impl.f_width_in_mcus * ((uint32_t)(self->private_impl.f_components_h[3])))); - self->private_impl.f_components_workbuf_heights[0] = wuffs_base__u32__min(v_upper_bound, (8 * self->private_impl.f_height_in_mcus * ((uint32_t)(self->private_impl.f_components_v[0])))); - self->private_impl.f_components_workbuf_heights[1] = wuffs_base__u32__min(v_upper_bound, (8 * self->private_impl.f_height_in_mcus * ((uint32_t)(self->private_impl.f_components_v[1])))); - self->private_impl.f_components_workbuf_heights[2] = wuffs_base__u32__min(v_upper_bound, (8 * self->private_impl.f_height_in_mcus * ((uint32_t)(self->private_impl.f_components_v[2])))); - self->private_impl.f_components_workbuf_heights[3] = wuffs_base__u32__min(v_upper_bound, (8 * self->private_impl.f_height_in_mcus * ((uint32_t)(self->private_impl.f_components_v[3])))); - self->private_impl.f_components_workbuf_offsets[0] = 0; - self->private_impl.f_components_workbuf_offsets[1] = (self->private_impl.f_components_workbuf_offsets[0] + (((uint64_t)(self->private_impl.f_components_workbuf_widths[0])) * ((uint64_t)(self->private_impl.f_components_workbuf_heights[0])))); - self->private_impl.f_components_workbuf_offsets[2] = (self->private_impl.f_components_workbuf_offsets[1] + (((uint64_t)(self->private_impl.f_components_workbuf_widths[1])) * ((uint64_t)(self->private_impl.f_components_workbuf_heights[1])))); - self->private_impl.f_components_workbuf_offsets[3] = (self->private_impl.f_components_workbuf_offsets[2] + (((uint64_t)(self->private_impl.f_components_workbuf_widths[2])) * ((uint64_t)(self->private_impl.f_components_workbuf_heights[2])))); - self->private_impl.f_components_workbuf_offsets[4] = (self->private_impl.f_components_workbuf_offsets[3] + (((uint64_t)(self->private_impl.f_components_workbuf_widths[3])) * ((uint64_t)(self->private_impl.f_components_workbuf_heights[3])))); - - goto ok; - ok: - self->private_impl.p_decode_sof[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_sof[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_data.s_decode_sof[0].v_i = v_i; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func jpeg.decoder.decode_frame_config - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_jpeg__decoder__decode_frame_config( - wuffs_jpeg__decoder* self, - wuffs_base__frame_config* a_dst, - wuffs_base__io_buffer* a_src) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - if (!a_src) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - if ((self->private_impl.active_coroutine != 0) && - (self->private_impl.active_coroutine != 2)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); - } - self->private_impl.active_coroutine = 0; - wuffs_base__status status = wuffs_base__make_status(NULL); - - wuffs_base__status v_status = wuffs_base__make_status(NULL); - - uint32_t coro_susp_point = self->private_impl.p_decode_frame_config[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - while (true) { - { - wuffs_base__status t_0 = wuffs_jpeg__decoder__do_decode_frame_config(self, a_dst, a_src); - v_status = t_0; - } - if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { - status = wuffs_base__make_status(wuffs_jpeg__error__truncated_input); - goto exit; - } - status = v_status; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); - } - - ok: - self->private_impl.p_decode_frame_config[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0; - - goto exit; - exit: - if (wuffs_base__status__is_error(&status)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - } - return status; -} - -// -------- func jpeg.decoder.do_decode_frame_config - -static wuffs_base__status -wuffs_jpeg__decoder__do_decode_frame_config( - wuffs_jpeg__decoder* self, - wuffs_base__frame_config* a_dst, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - if (self->private_impl.f_call_sequence == 32) { - } else if (self->private_impl.f_call_sequence < 32) { - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - status = wuffs_jpeg__decoder__do_decode_image_config(self, NULL, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - } else if (self->private_impl.f_call_sequence == 40) { - if (self->private_impl.f_frame_config_io_position != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) { - status = wuffs_base__make_status(wuffs_base__error__bad_restart); - goto exit; - } - } else if (self->private_impl.f_call_sequence == 64) { - self->private_impl.f_call_sequence = 96; - status = wuffs_base__make_status(wuffs_base__note__end_of_data); - goto ok; - } else { - status = wuffs_base__make_status(wuffs_base__note__end_of_data); - goto ok; - } - if (a_dst != NULL) { - wuffs_base__frame_config__set( - a_dst, - wuffs_base__utility__make_rect_ie_u32( - 0, - 0, - self->private_impl.f_width, - self->private_impl.f_height), - ((wuffs_base__flicks)(0)), - 0, - self->private_impl.f_frame_config_io_position, - 0, - true, - false, - 4278190080); - } - self->private_impl.f_call_sequence = 64; - - ok: - self->private_impl.p_do_decode_frame_config[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_do_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func jpeg.decoder.decode_frame - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_jpeg__decoder__decode_frame( - wuffs_jpeg__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__pixel_blend a_blend, - wuffs_base__slice_u8 a_workbuf, - wuffs_base__decode_frame_options* a_opts) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - if (!a_dst || !a_src) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - if ((self->private_impl.active_coroutine != 0) && - (self->private_impl.active_coroutine != 3)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); - } - self->private_impl.active_coroutine = 0; - wuffs_base__status status = wuffs_base__make_status(NULL); - - wuffs_base__status v_status = wuffs_base__make_status(NULL); - - uint32_t coro_susp_point = self->private_impl.p_decode_frame[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - while (true) { - { - wuffs_base__status t_0 = wuffs_jpeg__decoder__do_decode_frame(self, - a_dst, - a_src, - a_blend, - a_workbuf, - a_opts); - v_status = t_0; - } - if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { - status = wuffs_base__make_status(wuffs_jpeg__error__truncated_input); - goto exit; - } - status = v_status; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); - } - - ok: - self->private_impl.p_decode_frame[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0; - - goto exit; - exit: - if (wuffs_base__status__is_error(&status)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - } - return status; -} - -// -------- func jpeg.decoder.do_decode_frame - -static wuffs_base__status -wuffs_jpeg__decoder__do_decode_frame( - wuffs_jpeg__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__pixel_blend a_blend, - wuffs_base__slice_u8 a_workbuf, - wuffs_base__decode_frame_options* a_opts) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint32_t v_pixfmt = 0; - wuffs_base__status v_status = wuffs_base__make_status(NULL); - uint8_t v_c = 0; - uint8_t v_marker = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_do_decode_frame[0]; - if (coro_susp_point) { - v_marker = self->private_data.s_do_decode_frame[0].v_marker; - } - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - if (self->private_impl.f_call_sequence == 64) { - } else if (self->private_impl.f_call_sequence < 64) { - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - status = wuffs_jpeg__decoder__do_decode_frame_config(self, NULL, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - } else { - status = wuffs_base__make_status(wuffs_base__note__end_of_data); - goto ok; - } - v_pixfmt = 536870920; - if (self->private_impl.f_num_components > 1) { - v_pixfmt = 2415954056; - } - v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler, - wuffs_base__pixel_buffer__pixel_format(a_dst), - wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024)), - wuffs_base__utility__make_pixel_format(v_pixfmt), - wuffs_base__utility__empty_slice_u8(), - a_blend); - if ( ! wuffs_base__status__is_ok(&v_status)) { - status = v_status; - if (wuffs_base__status__is_error(&status)) { - goto exit; - } else if (wuffs_base__status__is_suspension(&status)) { - status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension); - goto exit; - } - goto ok; - } - label__0__continue:; - while (true) { - while (true) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_0 = *iop_a_src++; - v_c = t_0; - } - if (v_c == 255) { - goto label__1__break; - } - } - label__1__break:; - while (true) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_1 = *iop_a_src++; - v_c = t_1; - } - if (v_c != 255) { - v_marker = v_c; - goto label__2__break; - } - } - label__2__break:; - if (v_marker == 0) { - goto label__0__continue; - } else if ((208 <= v_marker) && (v_marker <= 215)) { - goto label__0__continue; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); - uint32_t t_2; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { - t_2 = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src))); - iop_a_src += 2; - } else { - self->private_data.s_do_decode_frame[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_do_decode_frame[0].scratch; - uint32_t num_bits_2 = ((uint32_t)(*scratch & 0xFF)); - *scratch >>= 8; - *scratch <<= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_2); - if (num_bits_2 == 8) { - t_2 = ((uint32_t)(*scratch >> 48)); - break; - } - num_bits_2 += 8; - *scratch |= ((uint64_t)(num_bits_2)); - } - } - self->private_impl.f_payload_length = t_2; - } - if (self->private_impl.f_payload_length < 2) { - status = wuffs_base__make_status(wuffs_jpeg__error__bad_marker); - goto exit; - } - self->private_impl.f_payload_length -= 2; - if (v_marker < 192) { - status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_marker); - goto exit; - } else if (v_marker < 208) { - if (v_marker == 196) { - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); - status = wuffs_jpeg__decoder__decode_dht(self, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - goto label__0__continue; - } else if (v_marker == 200) { - status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_marker); - goto exit; - } - status = wuffs_base__make_status(wuffs_jpeg__error__bad_sof_marker); - goto exit; - } else if (v_marker < 224) { - if (v_marker < 218) { - status = wuffs_base__make_status(wuffs_jpeg__error__bad_marker); - goto exit; - } else if (v_marker == 218) { - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7); - status = wuffs_jpeg__decoder__decode_sos(self, a_dst, a_src, a_workbuf); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - goto label__0__break; - } else if (v_marker == 219) { - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8); - status = wuffs_jpeg__decoder__decode_dqt(self, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - goto label__0__continue; - } else if (v_marker == 221) { - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9); - status = wuffs_jpeg__decoder__decode_dri(self, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - goto label__0__continue; - } else { - status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_marker); - goto exit; - } - } else if (v_marker < 240) { - } else { - if (v_marker == 254) { - } else { - status = wuffs_base__make_status(wuffs_jpeg__error__unsupported_marker); - goto exit; - } - } - self->private_data.s_do_decode_frame[0].scratch = self->private_impl.f_payload_length; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10); - if (self->private_data.s_do_decode_frame[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { - self->private_data.s_do_decode_frame[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); - iop_a_src = io2_a_src; - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - iop_a_src += self->private_data.s_do_decode_frame[0].scratch; - self->private_impl.f_payload_length = 0; - } - label__0__break:; - self->private_impl.f_call_sequence = 96; - - ok: - self->private_impl.p_do_decode_frame[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_do_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_data.s_do_decode_frame[0].v_marker = v_marker; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func jpeg.decoder.decode_dht - -static wuffs_base__status -wuffs_jpeg__decoder__decode_dht( - wuffs_jpeg__decoder* self, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint8_t v_c = 0; - uint8_t v_tc = 0; - uint8_t v_th = 0; - uint8_t v_tc4_th = 0; - uint32_t v_working_total_count = 0; - uint32_t v_total_count = 0; - uint32_t v_i = 0; - bool v_failed = false; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_decode_dht[0]; - if (coro_susp_point) { - v_tc4_th = self->private_data.s_decode_dht[0].v_tc4_th; - v_total_count = self->private_data.s_decode_dht[0].v_total_count; - v_i = self->private_data.s_decode_dht[0].v_i; - } - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - if (self->private_impl.f_sof_marker == 0) { - status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker); - goto exit; - } - while (self->private_impl.f_payload_length > 0) { - if (self->private_impl.f_payload_length < 17) { - status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker); - goto exit; - } - self->private_impl.f_payload_length -= 17; - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_0 = *iop_a_src++; - v_c = t_0; - } - if (((v_c >> 4) > 1) || ((v_c & 15) > 3)) { - status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker); - goto exit; - } - v_tc = (v_c >> 4); - v_th = (v_c & 15); - v_tc4_th = ((uint8_t)(((v_tc * 4) | v_th))); - if ((self->private_impl.f_sof_marker == 192) && ((v_tc4_th & 3) > 1)) { - status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker); - goto exit; - } - v_i = 0; - while (v_i < 16) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_1 = *iop_a_src++; - self->private_data.f_dht_temp_counts[v_i] = t_1; - } - v_i += 1; - } - v_working_total_count = 0; - v_i = 0; - while (v_i < 16) { - v_working_total_count = ((v_working_total_count + ((uint32_t)(self->private_data.f_dht_temp_counts[v_i]))) & 65535); - v_i += 1; - } - if ((v_working_total_count <= 0) || (256 < v_working_total_count)) { - status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker); - goto exit; - } - v_total_count = v_working_total_count; - if (self->private_impl.f_payload_length < v_total_count) { - status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker); - goto exit; - } - self->private_impl.f_payload_length -= v_total_count; - v_i = 0; - while (v_i < v_total_count) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_2 = *iop_a_src++; - self->private_impl.f_huff_tables_symbols[v_tc4_th][v_i] = t_2; - } - v_i += 1; - } - while (v_i < 256) { - self->private_impl.f_huff_tables_symbols[v_tc4_th][v_i] = 0; - v_i += 1; - } - if ((v_tc4_th & 4) == 0) { - v_i = 0; - while (v_i < v_total_count) { - if (self->private_impl.f_huff_tables_symbols[v_tc4_th][v_i] > 15) { - status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker); - goto exit; - } - v_i += 1; - } - } - v_failed = wuffs_jpeg__decoder__calculate_huff_tables(self, v_tc4_th, v_total_count); - if (v_failed) { - status = wuffs_base__make_status(wuffs_jpeg__error__bad_dht_marker); - goto exit; - } - self->private_impl.f_seen_dht[v_tc4_th] = true; - } - - goto ok; - ok: - self->private_impl.p_decode_dht[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_dht[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_data.s_decode_dht[0].v_tc4_th = v_tc4_th; - self->private_data.s_decode_dht[0].v_total_count = v_total_count; - self->private_data.s_decode_dht[0].v_i = v_i; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func jpeg.decoder.calculate_huff_tables - -static bool -wuffs_jpeg__decoder__calculate_huff_tables( - wuffs_jpeg__decoder* self, - uint8_t a_tc4_th, - uint32_t a_total_count) { - uint32_t v_i = 0; - uint8_t v_j = 0; - uint8_t v_k = 0; - uint32_t v_bit_length_minus_one = 0; - uint8_t v_bit_length = 0; - uint32_t v_bit_string = 0; - uint32_t v_slow = 0; - uint8_t v_prefix = 0; - uint16_t v_fast = 0; - uint32_t v_reps = 0; - - v_i = 0; - v_k = 0; - v_bit_length_minus_one = 0; - while (v_i < a_total_count) { - while (v_k >= self->private_data.f_dht_temp_counts[v_bit_length_minus_one]) { - v_k = 0; - v_bit_length_minus_one = ((v_bit_length_minus_one + 1) & 15); - } -#if defined(__GNUC__) -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wconversion" -#endif - v_k += 1; -#if defined(__GNUC__) -#pragma GCC diagnostic pop -#endif - self->private_data.f_dht_temp_bit_lengths[v_i] = ((uint8_t)((v_bit_length_minus_one + 1))); - v_i += 1; - } - v_bit_length = 0; - v_bit_string = 0; - v_i = 0; - while (v_i < a_total_count) { - while (v_bit_length < self->private_data.f_dht_temp_bit_lengths[v_i]) { - if (v_bit_length >= 16) { - return true; - } -#if defined(__GNUC__) -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wconversion" -#endif - v_bit_length += 1; -#if defined(__GNUC__) -#pragma GCC diagnostic pop -#endif - v_bit_string <<= 1; - } - self->private_data.f_dht_temp_bit_strings[v_i] = ((uint16_t)((v_bit_string & 65535))); - v_bit_string += 1; - if ((v_bit_string >> v_bit_length) > 0) { - return true; - } - v_i += 1; - } - v_k = 0; - v_bit_length_minus_one = 0; - while (true) { - if (self->private_data.f_dht_temp_counts[v_bit_length_minus_one] == 0) { - self->private_impl.f_huff_tables_slow[a_tc4_th][v_bit_length_minus_one] = 0; - } else { - v_slow = (255 & ((uint32_t)(((uint32_t)(v_k)) - ((uint32_t)(self->private_data.f_dht_temp_bit_strings[v_k]))))); - v_k += self->private_data.f_dht_temp_counts[v_bit_length_minus_one]; - self->private_impl.f_huff_tables_slow[a_tc4_th][v_bit_length_minus_one] = (v_slow | ((((uint32_t)(self->private_data.f_dht_temp_bit_strings[((uint8_t)(v_k - 1))])) + 1) << 8)); - } - v_bit_length_minus_one = ((v_bit_length_minus_one + 1) & 15); - if (v_bit_length_minus_one == 0) { - goto label__0__break; - } - } - label__0__break:; - v_i = 0; - while (v_i < 256) { - self->private_impl.f_huff_tables_fast[a_tc4_th][v_i] = 65535; - v_i += 1; - } - v_j = 0; - v_bit_length_minus_one = 0; - while (v_bit_length_minus_one < 8) { - v_k = 0; - while (v_k < self->private_data.f_dht_temp_counts[v_bit_length_minus_one]) { - v_prefix = ((uint8_t)(((((uint32_t)(self->private_data.f_dht_temp_bit_strings[v_j])) << (7 - v_bit_length_minus_one)) & 255))); - v_fast = ((uint16_t)(((((uint32_t)((v_bit_length_minus_one + 1))) << 8) | ((uint32_t)(self->private_impl.f_huff_tables_symbols[a_tc4_th][v_j]))))); - v_reps = (((uint32_t)(1)) << (7 - v_bit_length_minus_one)); - while (v_reps > 0) { - self->private_impl.f_huff_tables_fast[a_tc4_th][v_prefix] = v_fast; - v_prefix += 1; - v_reps -= 1; - } -#if defined(__GNUC__) -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wconversion" -#endif - v_k += 1; -#if defined(__GNUC__) -#pragma GCC diagnostic pop -#endif - v_j += 1; - } - v_bit_length_minus_one += 1; - } - return false; -} - -// -------- func jpeg.decoder.decode_sos - -static wuffs_base__status -wuffs_jpeg__decoder__decode_sos( - wuffs_jpeg__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__slice_u8 a_workbuf) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint32_t v_my = 0; - uint32_t v_mx = 0; - uint32_t v_decode_mcu_result = 0; - uint32_t v_bitstream_length = 0; - uint32_t v_b = 0; - uint32_t v_i = 0; - uint8_t v_csel = 0; - uint64_t v_h = 0; - uint64_t v_v = 0; - uint64_t v_stride = 0; - uint64_t v_offset = 0; - wuffs_base__status v_status = wuffs_base__make_status(NULL); - - uint32_t coro_susp_point = self->private_impl.p_decode_sos[0]; - if (coro_susp_point) { - v_my = self->private_data.s_decode_sos[0].v_my; - v_mx = self->private_data.s_decode_sos[0].v_mx; - } - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - if (((uint64_t)(a_workbuf.len)) < self->private_impl.f_components_workbuf_offsets[4]) { - status = wuffs_base__make_status(wuffs_base__error__bad_workbuf_length); - goto exit; - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - status = wuffs_jpeg__decoder__prepare_scan(self, a_src); - if (status.repr) { - goto suspend; - } - self->private_impl.f_next_restart_marker = 0; - self->private_impl.f_restarts_remaining = self->private_impl.f_restart_interval; - self->private_impl.f_mcu_previous_dc_values[0] = 0; - self->private_impl.f_mcu_previous_dc_values[1] = 0; - self->private_impl.f_mcu_previous_dc_values[2] = 0; - self->private_impl.f_mcu_previous_dc_values[3] = 0; - self->private_impl.f_bitstream_bits = 0; - self->private_impl.f_bitstream_n_bits = 0; - self->private_impl.f_bitstream_ri = 0; - self->private_impl.f_bitstream_wi = 0; - wuffs_jpeg__decoder__fill_bitstream(self, a_src); - v_my = 0; - while (v_my < self->private_impl.f_scan_height_in_mcus) { - v_mx = 0; - while (v_mx < self->private_impl.f_scan_width_in_mcus) { - self->private_impl.f_mcu_current_block = 0; - self->private_impl.f_mcu_zig_index = 0; - while (true) { - v_decode_mcu_result = wuffs_jpeg__decoder__decode_mcu(self); - if (v_decode_mcu_result == 0) { - goto label__decode_mcu__break; - } else if (v_decode_mcu_result != 1) { - status = wuffs_base__make_status(wuffs_jpeg__error__internal_error_inconsistent_decoder_state); - goto exit; - } - while (true) { - v_bitstream_length = ((uint32_t)(self->private_impl.f_bitstream_wi - self->private_impl.f_bitstream_ri)); - wuffs_jpeg__decoder__fill_bitstream(self, a_src); - if (v_bitstream_length < ((uint32_t)(self->private_impl.f_bitstream_wi - self->private_impl.f_bitstream_ri))) { - goto label__fill_bitstream__break; - } - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2); - } - label__fill_bitstream__break:; - } - label__decode_mcu__break:; - v_b = 0; - while (v_b < self->private_impl.f_mcu_num_blocks) { - v_csel = self->private_impl.f_scan_comps_cselector[self->private_impl.f_mcu_blocks_sselector[v_b]]; - v_h = ((uint64_t)(self->private_impl.f_components_h[v_csel])); - v_v = ((uint64_t)(self->private_impl.f_components_v[v_csel])); - v_stride = ((uint64_t)(self->private_impl.f_components_workbuf_widths[v_csel])); - v_offset = (self->private_impl.f_components_workbuf_offsets[v_csel] + (8 * (((v_h * ((uint64_t)(v_mx))) + ((uint64_t)(self->private_impl.f_scan_comps_bx_offset[v_b]))) + (((v_v * ((uint64_t)(v_my))) + ((uint64_t)(self->private_impl.f_scan_comps_by_offset[v_b]))) * v_stride)))); - if (v_offset <= ((uint64_t)(a_workbuf.len))) { - wuffs_jpeg__decoder__decode_idct(self, - wuffs_base__slice_u8__subslice_i(a_workbuf, v_offset), - v_stride, - v_b, - ((uint32_t)(self->private_impl.f_components_tq[v_csel]))); - } - v_b += 1; - } - v_b = 0; - while (v_b < self->private_impl.f_mcu_num_blocks) { - v_i = 0; - while (v_i < 64) { - self->private_data.f_mcu_blocks[v_b][v_i] = 0; - v_i += 1; - } - v_b += 1; - } - if (self->private_impl.f_restarts_remaining > 0) { -#if defined(__GNUC__) -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wconversion" -#endif - self->private_impl.f_restarts_remaining -= 1; -#if defined(__GNUC__) -#pragma GCC diagnostic pop -#endif - if (self->private_impl.f_restarts_remaining == 0) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); - status = wuffs_jpeg__decoder__skip_past_the_next_restart_marker(self, a_src); - if (status.repr) { - goto suspend; - } - self->private_impl.f_restarts_remaining = self->private_impl.f_restart_interval; - self->private_impl.f_mcu_previous_dc_values[0] = 0; - self->private_impl.f_mcu_previous_dc_values[1] = 0; - self->private_impl.f_mcu_previous_dc_values[2] = 0; - self->private_impl.f_mcu_previous_dc_values[3] = 0; - self->private_impl.f_bitstream_bits = 0; - self->private_impl.f_bitstream_n_bits = 0; - self->private_impl.f_bitstream_ri = 0; - self->private_impl.f_bitstream_wi = 0; - } - } - v_mx += 1; - } - v_my += 1; - } - if (self->private_impl.f_num_components == 1) { - v_status = wuffs_jpeg__decoder__swizzle_gray(self, a_dst, a_workbuf); - status = v_status; - if (wuffs_base__status__is_error(&status)) { - goto exit; - } else if (wuffs_base__status__is_suspension(&status)) { - status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension); - goto exit; - } - goto ok; - } - v_status = wuffs_jpeg__decoder__swizzle_colorful(self, a_dst, a_workbuf); - status = v_status; - if (wuffs_base__status__is_error(&status)) { - goto exit; - } else if (wuffs_base__status__is_suspension(&status)) { - status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension); - goto exit; - } - goto ok; - - ok: - self->private_impl.p_decode_sos[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_sos[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_data.s_decode_sos[0].v_my = v_my; - self->private_data.s_decode_sos[0].v_mx = v_mx; - - goto exit; - exit: - return status; -} - -// -------- func jpeg.decoder.prepare_scan - -static wuffs_base__status -wuffs_jpeg__decoder__prepare_scan( - wuffs_jpeg__decoder* self, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint8_t v_c = 0; - uint32_t v_i = 0; - uint32_t v_j = 0; - uint32_t v_h = 0; - uint32_t v_v = 0; - uint32_t v_hv = 0; - uint32_t v_total_hv = 0; - uint32_t v_b = 0; - uint32_t v_bx_offset = 0; - uint32_t v_by_offset = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_prepare_scan[0]; - if (coro_susp_point) { - v_i = self->private_data.s_prepare_scan[0].v_i; - } - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - if ((self->private_impl.f_payload_length < 6) || (self->private_impl.f_payload_length > 12)) { - status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker); - goto exit; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_0 = *iop_a_src++; - v_c = t_0; - } - if ((v_c < 1) || (v_c > 4)) { - status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker); - goto exit; - } - self->private_impl.f_scan_num_components = ((uint32_t)(v_c)); - if ((self->private_impl.f_scan_num_components > self->private_impl.f_num_components) || ((self->private_impl.f_scan_num_components < self->private_impl.f_num_components) && (self->private_impl.f_sof_marker < 194)) || (self->private_impl.f_payload_length != (4 + (2 * self->private_impl.f_scan_num_components)))) { - status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker); - goto exit; - } - self->private_impl.f_payload_length = 0; - v_i = 0; - while (v_i < self->private_impl.f_scan_num_components) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_1 = *iop_a_src++; - v_c = t_1; - } - v_j = 0; - label__0__continue:; - while (true) { - if (v_j >= self->private_impl.f_num_components) { - status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker); - goto exit; - } - if (v_c != self->private_impl.f_components_c[v_j]) { - v_j += 1; - goto label__0__continue; - } - if (v_i > 0) { - if (v_j <= ((uint32_t)(self->private_impl.f_scan_comps_cselector[(v_i - 1)]))) { - status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker); - goto exit; - } - } - if ( ! self->private_impl.f_seen_dqt[self->private_impl.f_components_tq[v_j]]) { - status = wuffs_base__make_status(wuffs_jpeg__error__missing_quantization_table); - goto exit; - } - self->private_impl.f_scan_comps_cselector[v_i] = ((uint8_t)(v_j)); - goto label__0__break; - } - label__0__break:; - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_2 = *iop_a_src++; - v_c = t_2; - } - if (((v_c >> 4) > 3) || ((v_c & 15) > 3)) { - status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker); - goto exit; - } - self->private_impl.f_scan_comps_td[v_i] = (v_c >> 4); - self->private_impl.f_scan_comps_ta[v_i] = (v_c & 15); - if (self->private_impl.f_sof_marker == 192) { - if ((self->private_impl.f_scan_comps_td[v_i] > 1) || (self->private_impl.f_scan_comps_ta[v_i] > 1)) { - status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker); - goto exit; - } - } - if ( ! self->private_impl.f_seen_dht[(0 | self->private_impl.f_scan_comps_td[v_i])] || ! self->private_impl.f_seen_dht[(4 | self->private_impl.f_scan_comps_ta[v_i])]) { - status = wuffs_base__make_status(wuffs_jpeg__error__missing_huffman_table); - goto exit; - } - v_i += 1; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_3 = *iop_a_src++; - v_c = t_3; - } - if (v_c > 63) { - status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker); - goto exit; - } - self->private_impl.f_scan_ss = v_c; - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_4 = *iop_a_src++; - v_c = t_4; - } - if ((v_c > 63) || (v_c < self->private_impl.f_scan_ss)) { - status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker); - goto exit; - } - self->private_impl.f_scan_se = v_c; - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_5 = *iop_a_src++; - v_c = t_5; - } - if (((v_c >> 4) > 13) || ((v_c & 15) > 13)) { - status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker); - goto exit; - } - self->private_impl.f_scan_ah = (v_c >> 4); - self->private_impl.f_scan_al = (v_c & 15); - self->private_impl.f_scan_width_in_mcus = self->private_impl.f_width_in_mcus; - self->private_impl.f_scan_height_in_mcus = self->private_impl.f_height_in_mcus; - if (self->private_impl.f_scan_num_components == 1) { - self->private_impl.f_scan_comps_bx_offset[0] = 0; - self->private_impl.f_scan_comps_by_offset[0] = 0; - self->private_impl.f_mcu_num_blocks = 1; - self->private_impl.f_mcu_blocks_sselector[0] = 0; - } else { - v_total_hv = 0; - v_i = 0; - v_b = 0; - v_bx_offset = 0; - v_by_offset = 0; - while (v_i < self->private_impl.f_scan_num_components) { - v_h = ((uint32_t)(self->private_impl.f_components_h[self->private_impl.f_scan_comps_cselector[v_i]])); - v_v = ((uint32_t)(self->private_impl.f_components_v[self->private_impl.f_scan_comps_cselector[v_i]])); - v_hv = (((uint32_t)(self->private_impl.f_components_h[self->private_impl.f_scan_comps_cselector[v_i]])) * ((uint32_t)(self->private_impl.f_components_v[self->private_impl.f_scan_comps_cselector[v_i]]))); - v_total_hv += v_hv; - while (v_hv > 0) { - self->private_impl.f_scan_comps_bx_offset[(v_b & 15)] = ((uint8_t)((v_bx_offset & 3))); - self->private_impl.f_scan_comps_by_offset[(v_b & 15)] = ((uint8_t)((v_by_offset & 3))); - self->private_impl.f_mcu_blocks_sselector[(v_b & 15)] = ((uint8_t)(v_i)); - v_b += 1; - v_bx_offset += 1; - if (v_bx_offset == v_h) { - v_bx_offset = 0; - v_by_offset += 1; - if (v_by_offset == v_v) { - v_by_offset = 0; - } - } - v_hv -= 1; - } - v_i += 1; - } - if (v_total_hv > 10) { - status = wuffs_base__make_status(wuffs_jpeg__error__bad_sos_marker); - goto exit; - } - self->private_impl.f_mcu_num_blocks = v_total_hv; - } - - goto ok; - ok: - self->private_impl.p_prepare_scan[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_prepare_scan[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_data.s_prepare_scan[0].v_i = v_i; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func jpeg.decoder.fill_bitstream - -static wuffs_base__empty_struct -wuffs_jpeg__decoder__fill_bitstream( - wuffs_jpeg__decoder* self, - wuffs_base__io_buffer* a_src) { - uint32_t v_i = 0; - uint32_t v_wi = 0; - uint8_t v_c = 0; - uint32_t v_n = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - if (self->private_impl.f_bitstream_ri <= 0) { - } else if (self->private_impl.f_bitstream_ri == self->private_impl.f_bitstream_wi) { - self->private_impl.f_bitstream_ri = 0; - self->private_impl.f_bitstream_wi = 0; - } else { - v_i = 0; - while (self->private_impl.f_bitstream_ri < self->private_impl.f_bitstream_wi) { - self->private_data.f_bitstream_buffer[v_i] = self->private_data.f_bitstream_buffer[self->private_impl.f_bitstream_ri]; - self->private_impl.f_bitstream_ri += 1; - v_i += 1; - if (v_i >= self->private_impl.f_bitstream_ri) { - goto label__0__break; - } - } - label__0__break:; - self->private_impl.f_bitstream_ri = 0; - self->private_impl.f_bitstream_wi = v_i; - } - v_wi = self->private_impl.f_bitstream_wi; - while ((v_wi < 2048) && (((uint64_t)(io2_a_src - iop_a_src)) > 0)) { - v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); - if (v_c < 255) { - self->private_data.f_bitstream_buffer[v_wi] = v_c; - v_wi += 1; - iop_a_src += 1; - } else if (((uint64_t)(io2_a_src - iop_a_src)) <= 1) { - goto label__1__break; - } else if ((wuffs_base__peek_u16le__no_bounds_check(iop_a_src) >> 8) > 0) { - goto label__1__break; - } else { - self->private_data.f_bitstream_buffer[v_wi] = 255; - v_wi += 1; - iop_a_src += 2; - } - } - label__1__break:; - if (((uint64_t)(io2_a_src - iop_a_src)) > 1) { - if ((wuffs_base__peek_u8be__no_bounds_check(iop_a_src) >= 255) && ((wuffs_base__peek_u16le__no_bounds_check(iop_a_src) >> 8) > 0)) { - v_n = (wuffs_base__u32__min(v_wi, 2016) + 32); - while (v_wi < v_n) { - self->private_data.f_bitstream_buffer[v_wi] = 0; - v_wi += 1; - } - } - } - self->private_impl.f_bitstream_wi = v_wi; - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return wuffs_base__make_empty_struct(); -} - -// -------- func jpeg.decoder.skip_past_the_next_restart_marker - -static wuffs_base__status -wuffs_jpeg__decoder__skip_past_the_next_restart_marker( - wuffs_jpeg__decoder* self, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint8_t v_c = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_skip_past_the_next_restart_marker[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - label__0__continue:; - while (true) { - if (((uint64_t)(io2_a_src - iop_a_src)) < 2) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); - goto label__0__continue; - } else if (wuffs_base__peek_u8be__no_bounds_check(iop_a_src) < 255) { - iop_a_src += 1; - goto label__0__continue; - } - v_c = ((uint8_t)((wuffs_base__peek_u16le__no_bounds_check(iop_a_src) >> 8))); - if (v_c < 192) { - iop_a_src += 2; - goto label__0__continue; - } else if ((v_c < 208) || (215 < v_c)) { - goto label__0__break; - } - v_c &= 7; - if ((self->private_impl.f_next_restart_marker == ((v_c + 1) & 7)) || (self->private_impl.f_next_restart_marker == ((v_c + 2) & 7))) { - goto label__0__break; - } else if ((self->private_impl.f_next_restart_marker == ((v_c + 7) & 7)) || (self->private_impl.f_next_restart_marker == ((v_c + 6) & 7))) { - iop_a_src += 2; - goto label__0__continue; - } else { - iop_a_src += 2; - goto label__0__break; - } - } - label__0__break:; - self->private_impl.f_next_restart_marker = (((uint8_t)(self->private_impl.f_next_restart_marker + 1)) & 7); - - ok: - self->private_impl.p_skip_past_the_next_restart_marker[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_skip_past_the_next_restart_marker[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func jpeg.decoder.swizzle_gray - -static wuffs_base__status -wuffs_jpeg__decoder__swizzle_gray( - wuffs_jpeg__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__slice_u8 a_workbuf) { - wuffs_base__pixel_format v_dst_pixfmt = {0}; - uint32_t v_dst_bits_per_pixel = 0; - uint32_t v_dst_bytes_per_pixel = 0; - uint64_t v_dst_length = 0; - wuffs_base__table_u8 v_tab = {0}; - wuffs_base__slice_u8 v_dst = {0}; - uint32_t v_y = 0; - uint64_t v_stride = 0; - - v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst); - v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt); - if ((v_dst_bits_per_pixel & 7) != 0) { - return wuffs_base__make_status(wuffs_base__error__unsupported_option); - } - v_dst_bytes_per_pixel = (v_dst_bits_per_pixel / 8); - v_dst_length = ((uint64_t)((v_dst_bytes_per_pixel * self->private_impl.f_width))); - v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0); - v_y = 0; - while (v_y < self->private_impl.f_height) { - v_dst = wuffs_base__table_u8__row_u32(v_tab, v_y); - if (v_dst_length < ((uint64_t)(v_dst.len))) { - v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_length); - } - wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024)), a_workbuf); - v_stride = ((uint64_t)(self->private_impl.f_components_workbuf_widths[0])); - if (v_stride <= ((uint64_t)(a_workbuf.len))) { - a_workbuf = wuffs_base__slice_u8__subslice_i(a_workbuf, v_stride); - } else { - a_workbuf = wuffs_base__utility__empty_slice_u8(); - } - v_y += 1; - } - return wuffs_base__make_status(NULL); -} - -// -------- func jpeg.decoder.swizzle_colorful - -static wuffs_base__status -wuffs_jpeg__decoder__swizzle_colorful( - wuffs_jpeg__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__slice_u8 a_workbuf) { - wuffs_base__slice_u8 v_src0 = {0}; - wuffs_base__slice_u8 v_src1 = {0}; - wuffs_base__slice_u8 v_src2 = {0}; - wuffs_base__slice_u8 v_src3 = {0}; - wuffs_base__status v_status = wuffs_base__make_status(NULL); - - if ((self->private_impl.f_components_workbuf_offsets[0] <= self->private_impl.f_components_workbuf_offsets[1]) && (self->private_impl.f_components_workbuf_offsets[1] <= ((uint64_t)(a_workbuf.len)))) { - v_src0 = wuffs_base__slice_u8__subslice_ij(a_workbuf, - self->private_impl.f_components_workbuf_offsets[0], - self->private_impl.f_components_workbuf_offsets[1]); - } - if ((self->private_impl.f_components_workbuf_offsets[1] <= self->private_impl.f_components_workbuf_offsets[2]) && (self->private_impl.f_components_workbuf_offsets[2] <= ((uint64_t)(a_workbuf.len)))) { - v_src1 = wuffs_base__slice_u8__subslice_ij(a_workbuf, - self->private_impl.f_components_workbuf_offsets[1], - self->private_impl.f_components_workbuf_offsets[2]); - } - if ((self->private_impl.f_components_workbuf_offsets[2] <= self->private_impl.f_components_workbuf_offsets[3]) && (self->private_impl.f_components_workbuf_offsets[3] <= ((uint64_t)(a_workbuf.len)))) { - v_src2 = wuffs_base__slice_u8__subslice_ij(a_workbuf, - self->private_impl.f_components_workbuf_offsets[2], - self->private_impl.f_components_workbuf_offsets[3]); - } - if ((self->private_impl.f_components_workbuf_offsets[3] <= self->private_impl.f_components_workbuf_offsets[4]) && (self->private_impl.f_components_workbuf_offsets[4] <= ((uint64_t)(a_workbuf.len)))) { - v_src3 = wuffs_base__slice_u8__subslice_ij(a_workbuf, - self->private_impl.f_components_workbuf_offsets[3], - self->private_impl.f_components_workbuf_offsets[4]); - } - v_status = wuffs_base__pixel_swizzler__swizzle_ycck(&self->private_impl.f_swizzler, - a_dst, - wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024)), - self->private_impl.f_width, - self->private_impl.f_height, - v_src0, - v_src1, - v_src2, - v_src3, - self->private_impl.f_components_workbuf_widths[0], - self->private_impl.f_components_workbuf_widths[1], - self->private_impl.f_components_workbuf_widths[2], - self->private_impl.f_components_workbuf_widths[3], - self->private_impl.f_components_workbuf_heights[0], - self->private_impl.f_components_workbuf_heights[1], - self->private_impl.f_components_workbuf_heights[2], - self->private_impl.f_components_workbuf_heights[3], - self->private_impl.f_components_workbuf_widths[0], - self->private_impl.f_components_workbuf_widths[1], - self->private_impl.f_components_workbuf_widths[2], - self->private_impl.f_components_workbuf_widths[3], - self->private_impl.f_components_h[0], - self->private_impl.f_components_h[1], - self->private_impl.f_components_h[2], - self->private_impl.f_components_h[3], - self->private_impl.f_components_v[0], - self->private_impl.f_components_v[1], - self->private_impl.f_components_v[2], - self->private_impl.f_components_v[3], - true, - wuffs_base__make_slice_u8(self->private_data.f_bitstream_buffer, 2048)); - return wuffs_base__status__ensure_not_a_suspension(v_status); -} - -// -------- func jpeg.decoder.frame_dirty_rect - -WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32 -wuffs_jpeg__decoder__frame_dirty_rect( - const wuffs_jpeg__decoder* self) { - if (!self) { - return wuffs_base__utility__empty_rect_ie_u32(); - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return wuffs_base__utility__empty_rect_ie_u32(); - } - - return wuffs_base__utility__make_rect_ie_u32( - 0, - 0, - self->private_impl.f_width, - self->private_impl.f_height); -} - -// -------- func jpeg.decoder.num_animation_loops - -WUFFS_BASE__MAYBE_STATIC uint32_t -wuffs_jpeg__decoder__num_animation_loops( - const wuffs_jpeg__decoder* self) { - if (!self) { - return 0; - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return 0; - } - - return 0; -} - -// -------- func jpeg.decoder.num_decoded_frame_configs - -WUFFS_BASE__MAYBE_STATIC uint64_t -wuffs_jpeg__decoder__num_decoded_frame_configs( - const wuffs_jpeg__decoder* self) { - if (!self) { - return 0; - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return 0; - } - - if (self->private_impl.f_call_sequence > 32) { - return 1; - } - return 0; -} - -// -------- func jpeg.decoder.num_decoded_frames - -WUFFS_BASE__MAYBE_STATIC uint64_t -wuffs_jpeg__decoder__num_decoded_frames( - const wuffs_jpeg__decoder* self) { - if (!self) { - return 0; - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return 0; - } - - if (self->private_impl.f_call_sequence > 64) { - return 1; - } - return 0; -} - -// -------- func jpeg.decoder.restart_frame - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_jpeg__decoder__restart_frame( - wuffs_jpeg__decoder* self, - uint64_t a_index, - uint64_t a_io_position) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - - uint32_t v_i = 0; - uint32_t v_j = 0; - - if (self->private_impl.f_call_sequence < 32) { - return wuffs_base__make_status(wuffs_base__error__bad_call_sequence); - } - if (a_index != 0) { - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - self->private_impl.f_call_sequence = 40; - self->private_impl.f_frame_config_io_position = a_io_position; - self->private_impl.f_restart_interval = self->private_impl.f_saved_restart_interval; - while (v_i < 4) { - self->private_impl.f_seen_dqt[v_i] = self->private_impl.f_saved_seen_dqt[v_i]; - while (v_j < 64) { - self->private_impl.f_quant_tables[v_i][v_j] = self->private_impl.f_saved_quant_tables[v_i][v_j]; - v_j += 1; - } - v_i += 1; - } - while (v_i < 8) { - self->private_impl.f_seen_dht[v_i] = false; - v_i += 1; - } - return wuffs_base__make_status(NULL); -} - -// -------- func jpeg.decoder.set_report_metadata - -WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct -wuffs_jpeg__decoder__set_report_metadata( - wuffs_jpeg__decoder* self, - uint32_t a_fourcc, - bool a_report) { - return wuffs_base__make_empty_struct(); -} - -// -------- func jpeg.decoder.tell_me_more - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_jpeg__decoder__tell_me_more( - wuffs_jpeg__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__more_information* a_minfo, - wuffs_base__io_buffer* a_src) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - if (!a_dst || !a_src) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - if ((self->private_impl.active_coroutine != 0) && - (self->private_impl.active_coroutine != 4)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); - } - self->private_impl.active_coroutine = 0; - wuffs_base__status status = wuffs_base__make_status(NULL); - - status = wuffs_base__make_status(wuffs_base__error__no_more_information); - goto exit; - - goto ok; - ok: - goto exit; - exit: - if (wuffs_base__status__is_error(&status)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - } - return status; -} - -// -------- func jpeg.decoder.workbuf_len - -WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 -wuffs_jpeg__decoder__workbuf_len( - const wuffs_jpeg__decoder* self) { - if (!self) { - return wuffs_base__utility__empty_range_ii_u64(); - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return wuffs_base__utility__empty_range_ii_u64(); - } - - return wuffs_base__utility__make_range_ii_u64(self->private_impl.f_components_workbuf_offsets[4], self->private_impl.f_components_workbuf_offsets[4]); -} - -// -------- func jpeg.decoder.decode_mcu - -static uint32_t -wuffs_jpeg__decoder__decode_mcu( - wuffs_jpeg__decoder* self) { - uint32_t v_ret = 0; - uint64_t v_bits = 0; - uint32_t v_n_bits = 0; - uint8_t v_csel = 0; - wuffs_base__io_buffer u_r = wuffs_base__empty_io_buffer(); - wuffs_base__io_buffer* v_r = &u_r; - const uint8_t* iop_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io0_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_v_r WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - uint32_t v_pos = 0; - uint8_t v_dc_h = 0; - uint32_t v_dc_symbol = 0; - uint32_t v_dc_ht_fast = 0; - uint32_t v_dc_bl = 0; - uint32_t v_dc_code = 0; - uint32_t v_dc_blm1 = 0; - uint32_t v_dc_ht_slow = 0; - uint32_t v_dc_value = 0; - uint8_t v_ac_h = 0; - uint32_t v_ac_symbol = 0; - uint32_t v_ac_ht_fast = 0; - uint32_t v_ac_bl = 0; - uint32_t v_ac_code = 0; - uint32_t v_ac_blm1 = 0; - uint32_t v_ac_ht_slow = 0; - uint32_t v_ac_value = 0; - uint32_t v_ac_rrrr = 0; - uint32_t v_ac_ssss = 0; - uint32_t v_z = 0; - - v_bits = self->private_impl.f_bitstream_bits; - v_n_bits = self->private_impl.f_bitstream_n_bits; - if (self->private_impl.f_bitstream_ri > self->private_impl.f_bitstream_wi) { - return 2; - } - { - wuffs_base__io_buffer* o_0_v_r = v_r; - const uint8_t *o_0_iop_v_r = iop_v_r; - const uint8_t *o_0_io0_v_r = io0_v_r; - const uint8_t *o_0_io1_v_r = io1_v_r; - const uint8_t *o_0_io2_v_r = io2_v_r; - v_r = wuffs_base__io_reader__set( - &u_r, - &iop_v_r, - &io0_v_r, - &io1_v_r, - &io2_v_r, - wuffs_base__make_slice_u8_ij(self->private_data.f_bitstream_buffer, - self->private_impl.f_bitstream_ri, - self->private_impl.f_bitstream_wi), - ((uint64_t)(self->private_impl.f_bitstream_ri))); - while (true) { - while (self->private_impl.f_mcu_current_block < self->private_impl.f_mcu_num_blocks) { - while (self->private_impl.f_mcu_zig_index <= 0) { - if (((uint64_t)(io2_v_r - iop_v_r)) < 8) { - v_ret = 1; - goto label__goto_done__break; - } - v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63)); - iop_v_r += ((63 - (v_n_bits & 63)) >> 3); - v_n_bits |= 56; - v_dc_h = (0 | self->private_impl.f_scan_comps_td[self->private_impl.f_mcu_blocks_sselector[self->private_impl.f_mcu_current_block]]); - v_dc_ht_fast = ((uint32_t)(self->private_impl.f_huff_tables_fast[v_dc_h][(v_bits >> 56)])); - v_dc_bl = (v_dc_ht_fast >> 8); - if (v_n_bits >= v_dc_bl) { - v_dc_symbol = (15 & v_dc_ht_fast); - v_bits <<= (v_dc_bl & 63); - v_n_bits -= v_dc_bl; - } else { - v_dc_code = ((uint32_t)((v_bits >> 55))); - v_dc_blm1 = 8; - v_bits <<= 9; - v_n_bits -= 9; - while (true) { - v_dc_ht_slow = self->private_impl.f_huff_tables_slow[v_dc_h][v_dc_blm1]; - if (v_dc_code < (v_dc_ht_slow >> 8)) { - v_dc_symbol = (15 & ((uint32_t)(self->private_impl.f_huff_tables_symbols[v_dc_h][(255 & ((uint32_t)(v_dc_code + v_dc_ht_slow)))]))); - goto label__0__break; - } - v_dc_code = (((uint32_t)(v_dc_code << 1)) | ((uint32_t)((v_bits >> 63)))); - v_bits <<= 1; - v_n_bits -= 1; - v_dc_blm1 = ((v_dc_blm1 + 1) & 15); - if (v_dc_blm1 == 0) { - v_dc_symbol = 0; - goto label__0__break; - } - } - label__0__break:; - } - v_dc_value = ((uint32_t)((((v_bits >> 32) >> (32 - v_dc_symbol)) & 4294967295))); - if ((v_bits >> 63) == 0) { - v_dc_value += ((uint32_t)(1 + ((uint32_t)(((uint32_t)(4294967295)) << v_dc_symbol)))); - } - v_bits <<= v_dc_symbol; - v_n_bits -= v_dc_symbol; - v_csel = self->private_impl.f_scan_comps_cselector[self->private_impl.f_mcu_blocks_sselector[self->private_impl.f_mcu_current_block]]; - self->private_impl.f_mcu_previous_dc_values[v_csel] += ((uint16_t)((v_dc_value & 65535))); - self->private_data.f_mcu_blocks[self->private_impl.f_mcu_current_block][0] = self->private_impl.f_mcu_previous_dc_values[v_csel]; - self->private_impl.f_mcu_zig_index = 1; - goto label__dc_component__break; - } - label__dc_component__break:; - while (true) { - if (((uint64_t)(io2_v_r - iop_v_r)) < 8) { - v_ret = 1; - goto label__goto_done__break; - } - v_bits |= (wuffs_base__peek_u64be__no_bounds_check(iop_v_r) >> (v_n_bits & 63)); - iop_v_r += ((63 - (v_n_bits & 63)) >> 3); - v_n_bits |= 56; - v_ac_h = (4 | self->private_impl.f_scan_comps_ta[self->private_impl.f_mcu_blocks_sselector[self->private_impl.f_mcu_current_block]]); - v_ac_ht_fast = ((uint32_t)(self->private_impl.f_huff_tables_fast[v_ac_h][(v_bits >> 56)])); - v_ac_bl = (v_ac_ht_fast >> 8); - if (v_n_bits >= v_ac_bl) { - v_ac_symbol = (255 & v_ac_ht_fast); - v_bits <<= (v_ac_bl & 63); - v_n_bits -= v_ac_bl; - } else { - v_ac_code = ((uint32_t)((v_bits >> 55))); - v_ac_blm1 = 8; - v_bits <<= 9; - v_n_bits -= 9; - while (true) { - v_ac_ht_slow = self->private_impl.f_huff_tables_slow[v_ac_h][v_ac_blm1]; - if (v_ac_code < (v_ac_ht_slow >> 8)) { - v_ac_symbol = ((uint32_t)(self->private_impl.f_huff_tables_symbols[v_ac_h][(255 & ((uint32_t)(v_ac_code + v_ac_ht_slow)))])); - goto label__1__break; - } - v_ac_code = (((uint32_t)(v_ac_code << 1)) | ((uint32_t)((v_bits >> 63)))); - v_bits <<= 1; - v_n_bits -= 1; - v_ac_blm1 = ((v_ac_blm1 + 1) & 15); - if (v_ac_blm1 == 0) { - v_ac_symbol = 0; - goto label__1__break; - } - } - label__1__break:; - } - v_ac_rrrr = (v_ac_symbol >> 4); - v_ac_ssss = (v_ac_symbol & 15); - if (v_ac_ssss > 0) { - v_ac_value = ((uint32_t)(((v_bits >> (64 - v_ac_ssss)) & 4294967295))); - if ((v_bits >> 63) == 0) { - v_ac_value += ((uint32_t)(1 + ((uint32_t)(((uint32_t)(4294967295)) << v_ac_ssss)))); - } - v_bits <<= v_ac_ssss; - v_n_bits -= v_ac_ssss; - v_z = (self->private_impl.f_mcu_zig_index + v_ac_rrrr); - self->private_data.f_mcu_blocks[self->private_impl.f_mcu_current_block][WUFFS_JPEG__UNZIG[v_z]] = ((uint16_t)((v_ac_value & 65535))); - if ((v_z + 1) > 63) { - goto label__ac_components__break; - } - self->private_impl.f_mcu_zig_index = (v_z + 1); - } else if ((v_ac_rrrr < 15) || ((self->private_impl.f_mcu_zig_index + 16) > 63)) { - goto label__ac_components__break; - } else { - self->private_impl.f_mcu_zig_index = (self->private_impl.f_mcu_zig_index + 16); - } - } - label__ac_components__break:; - self->private_impl.f_mcu_zig_index = 0; - self->private_impl.f_mcu_current_block += 1; - } - self->private_impl.f_mcu_current_block = 0; - goto label__goto_done__break; - } - label__goto_done__break:; - v_pos = ((uint32_t)((wuffs_base__u64__sat_add((v_r ? v_r->meta.pos : 0), ((uint64_t)(iop_v_r - io0_v_r))) & 4294967295))); - if (v_pos > self->private_impl.f_bitstream_wi) { - v_ret = 2; - } else { - self->private_impl.f_bitstream_ri = v_pos; - } - v_r = o_0_v_r; - iop_v_r = o_0_iop_v_r; - io0_v_r = o_0_io0_v_r; - io1_v_r = o_0_io1_v_r; - io2_v_r = o_0_io2_v_r; - } - self->private_impl.f_bitstream_bits = v_bits; - self->private_impl.f_bitstream_n_bits = v_n_bits; - return v_ret; -} - -#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__JPEG) - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__JSON) - -// ---------------- Status Codes Implementations - -const char wuffs_json__error__bad_c0_control_code[] = "#json: bad C0 control code"; -const char wuffs_json__error__bad_utf_8[] = "#json: bad UTF-8"; -const char wuffs_json__error__bad_backslash_escape[] = "#json: bad backslash-escape"; -const char wuffs_json__error__bad_input[] = "#json: bad input"; -const char wuffs_json__error__bad_new_line_in_a_string[] = "#json: bad new-line in a string"; -const char wuffs_json__error__bad_quirk_combination[] = "#json: bad quirk combination"; -const char wuffs_json__error__unsupported_number_length[] = "#json: unsupported number length"; -const char wuffs_json__error__unsupported_recursion_depth[] = "#json: unsupported recursion depth"; -const char wuffs_json__error__internal_error_inconsistent_i_o[] = "#json: internal error: inconsistent I/O"; - -// ---------------- Private Consts - -#define WUFFS_JSON__DECODER_NUMBER_LENGTH_MAX_INCL 99 - -static const uint8_t -WUFFS_JSON__LUT_BACKSLASHES[256] WUFFS_BASE__POTENTIALLY_UNUSED = { - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 3, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 162, 0, 0, 0, 0, 5, - 0, 0, 0, 0, 0, 0, 0, 175, - 7, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 4, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 220, 0, 0, 0, - 0, 1, 136, 0, 0, 2, 140, 0, - 0, 0, 0, 0, 0, 0, 138, 0, - 0, 0, 141, 0, 137, 0, 6, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, -}; - -static const uint8_t -WUFFS_JSON__LUT_QUIRKY_BACKSLASHES_QUIRKS[8] WUFFS_BASE__POTENTIALLY_UNUSED = { - 0, 1, 3, 4, 5, 6, 7, 10, -}; - -static const uint8_t -WUFFS_JSON__LUT_QUIRKY_BACKSLASHES_CHARS[8] WUFFS_BASE__POTENTIALLY_UNUSED = { - 0, 7, 27, 10, 63, 39, 11, 0, -}; - -static const uint8_t -WUFFS_JSON__LUT_CHARS[256] WUFFS_BASE__POTENTIALLY_UNUSED = { - 128, 129, 130, 131, 132, 133, 134, 135, - 136, 137, 138, 139, 140, 141, 142, 143, - 144, 145, 146, 147, 148, 149, 150, 151, - 152, 153, 154, 155, 156, 157, 158, 159, - 0, 0, 1, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 2, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 16, 16, 16, 16, 16, 16, 16, 16, - 16, 16, 16, 16, 16, 16, 16, 16, - 16, 16, 16, 16, 16, 16, 16, 16, - 16, 16, 16, 16, 16, 16, 16, 16, - 16, 16, 16, 16, 16, 16, 16, 16, - 16, 16, 16, 16, 16, 16, 16, 16, - 16, 16, 16, 16, 16, 16, 16, 16, - 16, 16, 16, 16, 16, 16, 16, 16, - 32, 32, 3, 3, 3, 3, 3, 3, - 3, 3, 3, 3, 3, 3, 3, 3, - 3, 3, 3, 3, 3, 3, 3, 3, - 3, 3, 3, 3, 3, 3, 3, 3, - 4, 4, 4, 4, 4, 4, 4, 4, - 4, 4, 4, 4, 4, 4, 4, 4, - 5, 5, 5, 5, 5, 32, 32, 32, - 32, 32, 32, 32, 32, 32, 32, 32, -}; - -#define WUFFS_JSON__CLASS_WHITESPACE 0 - -#define WUFFS_JSON__CLASS_STRING 1 - -#define WUFFS_JSON__CLASS_COMMA 2 - -#define WUFFS_JSON__CLASS_COLON 3 - -#define WUFFS_JSON__CLASS_NUMBER 4 - -#define WUFFS_JSON__CLASS_OPEN_CURLY_BRACE 5 - -#define WUFFS_JSON__CLASS_CLOSE_CURLY_BRACE 6 - -#define WUFFS_JSON__CLASS_OPEN_SQUARE_BRACKET 7 - -#define WUFFS_JSON__CLASS_CLOSE_SQUARE_BRACKET 8 - -#define WUFFS_JSON__CLASS_FALSE 9 - -#define WUFFS_JSON__CLASS_TRUE 10 - -#define WUFFS_JSON__CLASS_NULL_NAN_INF 11 - -#define WUFFS_JSON__CLASS_COMMENT 12 - -#define WUFFS_JSON__EXPECT_VALUE 7858 - -#define WUFFS_JSON__EXPECT_NON_STRING_VALUE 7856 - -#define WUFFS_JSON__EXPECT_STRING 4098 - -#define WUFFS_JSON__EXPECT_COMMA 4100 - -#define WUFFS_JSON__EXPECT_COLON 4104 - -#define WUFFS_JSON__EXPECT_NUMBER 4112 - -#define WUFFS_JSON__EXPECT_CLOSE_CURLY_BRACE 4160 - -#define WUFFS_JSON__EXPECT_CLOSE_SQUARE_BRACKET 4352 - -static const uint8_t -WUFFS_JSON__LUT_CLASSES[256] WUFFS_BASE__POTENTIALLY_UNUSED = { - 15, 15, 15, 15, 15, 15, 15, 15, - 15, 0, 0, 15, 15, 0, 15, 15, - 15, 15, 15, 15, 15, 15, 15, 15, - 15, 15, 15, 15, 15, 15, 15, 15, - 0, 15, 1, 15, 15, 15, 15, 15, - 15, 15, 15, 11, 2, 4, 15, 12, - 4, 4, 4, 4, 4, 4, 4, 4, - 4, 4, 3, 15, 15, 15, 15, 15, - 15, 15, 15, 15, 15, 15, 15, 15, - 15, 11, 15, 15, 15, 15, 11, 15, - 15, 15, 15, 15, 15, 15, 15, 15, - 15, 15, 15, 7, 15, 8, 15, 15, - 15, 15, 15, 15, 15, 15, 9, 15, - 15, 11, 15, 15, 15, 15, 11, 15, - 15, 15, 15, 15, 10, 15, 15, 15, - 15, 15, 15, 5, 15, 6, 15, 15, - 15, 15, 15, 15, 15, 15, 15, 15, - 15, 15, 15, 15, 15, 15, 15, 15, - 15, 15, 15, 15, 15, 15, 15, 15, - 15, 15, 15, 15, 15, 15, 15, 15, - 15, 15, 15, 15, 15, 15, 15, 15, - 15, 15, 15, 15, 15, 15, 15, 15, - 15, 15, 15, 15, 15, 15, 15, 15, - 15, 15, 15, 15, 15, 15, 15, 15, - 15, 15, 15, 15, 15, 15, 15, 15, - 15, 15, 15, 15, 15, 15, 15, 15, - 15, 15, 15, 15, 15, 15, 15, 15, - 15, 15, 15, 15, 15, 15, 15, 15, - 15, 15, 15, 15, 15, 15, 15, 15, - 15, 15, 15, 15, 15, 15, 15, 15, - 15, 15, 15, 15, 15, 15, 15, 15, - 15, 15, 15, 15, 15, 15, 15, 15, -}; - -static const uint8_t -WUFFS_JSON__LUT_DECIMAL_DIGITS[256] WUFFS_BASE__POTENTIALLY_UNUSED = { - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 128, 129, 130, 131, 132, 133, 134, 135, - 136, 137, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, -}; - -static const uint8_t -WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[256] WUFFS_BASE__POTENTIALLY_UNUSED = { - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 128, 129, 130, 131, 132, 133, 134, 135, - 136, 137, 0, 0, 0, 0, 0, 0, - 0, 138, 139, 140, 141, 142, 143, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 138, 139, 140, 141, 142, 143, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, -}; - -#define WUFFS_JSON__QUIRKS_BASE 1225364480 - -#define WUFFS_JSON__QUIRKS_COUNT 21 - -// ---------------- Private Initializer Prototypes - -// ---------------- Private Function Prototypes - -static uint32_t -wuffs_json__decoder__decode_number( - wuffs_json__decoder* self, - wuffs_base__io_buffer* a_src); - -static uint32_t -wuffs_json__decoder__decode_digits( - wuffs_json__decoder* self, - wuffs_base__io_buffer* a_src, - uint32_t a_n); - -static wuffs_base__status -wuffs_json__decoder__decode_leading( - wuffs_json__decoder* self, - wuffs_base__token_buffer* a_dst, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_json__decoder__decode_comment( - wuffs_json__decoder* self, - wuffs_base__token_buffer* a_dst, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_json__decoder__decode_inf_nan( - wuffs_json__decoder* self, - wuffs_base__token_buffer* a_dst, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_json__decoder__decode_trailer( - wuffs_json__decoder* self, - wuffs_base__token_buffer* a_dst, - wuffs_base__io_buffer* a_src); - -// ---------------- VTables - -const wuffs_base__token_decoder__func_ptrs -wuffs_json__decoder__func_ptrs_for__wuffs_base__token_decoder = { - (wuffs_base__status(*)(void*, - wuffs_base__token_buffer*, - wuffs_base__io_buffer*, - wuffs_base__slice_u8))(&wuffs_json__decoder__decode_tokens), - (wuffs_base__status(*)(void*, - uint32_t, - uint64_t))(&wuffs_json__decoder__set_quirk), - (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_json__decoder__workbuf_len), -}; - -// ---------------- Initializer Implementations - -wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT -wuffs_json__decoder__initialize( - wuffs_json__decoder* self, - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options){ - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (sizeof(*self) != sizeof_star_self) { - return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver); - } - if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) || - (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) { - return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version); - } - - if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) { - // The whole point of this if-check is to detect an uninitialized *self. - // We disable the warning on GCC. Clang-5.0 does not have this warning. -#if !defined(__clang__) && defined(__GNUC__) -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wmaybe-uninitialized" -#endif - if (self->private_impl.magic != 0) { - return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed); - } -#if !defined(__clang__) && defined(__GNUC__) -#pragma GCC diagnostic pop -#endif - } else { - if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) { - memset(self, 0, sizeof(*self)); - options |= WUFFS_INITIALIZE__ALREADY_ZEROED; - } else { - memset(&(self->private_impl), 0, sizeof(self->private_impl)); - } - } - - self->private_impl.magic = WUFFS_BASE__MAGIC; - self->private_impl.vtable_for__wuffs_base__token_decoder.vtable_name = - wuffs_base__token_decoder__vtable_name; - self->private_impl.vtable_for__wuffs_base__token_decoder.function_pointers = - (const void*)(&wuffs_json__decoder__func_ptrs_for__wuffs_base__token_decoder); - return wuffs_base__make_status(NULL); -} - -wuffs_json__decoder* -wuffs_json__decoder__alloc() { - wuffs_json__decoder* x = - (wuffs_json__decoder*)(calloc(sizeof(wuffs_json__decoder), 1)); - if (!x) { - return NULL; - } - if (wuffs_json__decoder__initialize( - x, sizeof(wuffs_json__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) { - free(x); - return NULL; - } - return x; -} - -size_t -sizeof__wuffs_json__decoder() { - return sizeof(wuffs_json__decoder); -} - -// ---------------- Function Implementations - -// -------- func json.decoder.set_quirk - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_json__decoder__set_quirk( - wuffs_json__decoder* self, - uint32_t a_key, - uint64_t a_value) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - - if (a_key >= 1225364480) { - a_key -= 1225364480; - if (a_key < 21) { - self->private_impl.f_quirks[a_key] = (a_value > 0); - return wuffs_base__make_status(NULL); - } - } - return wuffs_base__make_status(wuffs_base__error__unsupported_option); -} - -// -------- func json.decoder.workbuf_len - -WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 -wuffs_json__decoder__workbuf_len( - const wuffs_json__decoder* self) { - if (!self) { - return wuffs_base__utility__empty_range_ii_u64(); - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return wuffs_base__utility__empty_range_ii_u64(); - } - - return wuffs_base__utility__empty_range_ii_u64(); -} - -// -------- func json.decoder.decode_tokens - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_json__decoder__decode_tokens( - wuffs_json__decoder* self, - wuffs_base__token_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__slice_u8 a_workbuf) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - if (!a_dst || !a_src) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - if ((self->private_impl.active_coroutine != 0) && - (self->private_impl.active_coroutine != 1)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); - } - self->private_impl.active_coroutine = 0; - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint32_t v_vminor = 0; - uint32_t v_number_length = 0; - uint32_t v_number_status = 0; - uint32_t v_string_length = 0; - uint32_t v_whitespace_length = 0; - uint32_t v_depth = 0; - uint32_t v_stack_byte = 0; - uint32_t v_stack_bit = 0; - uint32_t v_match = 0; - uint32_t v_c4 = 0; - uint8_t v_c = 0; - uint8_t v_backslash = 0; - uint8_t v_char = 0; - uint8_t v_class = 0; - uint32_t v_multi_byte_utf8 = 0; - uint8_t v_backslash_x_ok = 0; - uint8_t v_backslash_x_value = 0; - uint32_t v_backslash_x_string = 0; - uint8_t v_uni4_ok = 0; - uint64_t v_uni4_string = 0; - uint32_t v_uni4_value = 0; - uint32_t v_uni4_high_surrogate = 0; - uint8_t v_uni8_ok = 0; - uint64_t v_uni8_string = 0; - uint32_t v_uni8_value = 0; - uint32_t v_expect = 0; - uint32_t v_expect_after_value = 0; - - wuffs_base__token* iop_a_dst = NULL; - wuffs_base__token* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - wuffs_base__token* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - wuffs_base__token* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_dst && a_dst->data.ptr) { - io0_a_dst = a_dst->data.ptr; - io1_a_dst = io0_a_dst + a_dst->meta.wi; - iop_a_dst = io1_a_dst; - io2_a_dst = io0_a_dst + a_dst->data.len; - if (a_dst->meta.closed) { - io2_a_dst = iop_a_dst; - } - } - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_decode_tokens[0]; - if (coro_susp_point) { - v_depth = self->private_data.s_decode_tokens[0].v_depth; - v_expect = self->private_data.s_decode_tokens[0].v_expect; - v_expect_after_value = self->private_data.s_decode_tokens[0].v_expect_after_value; - } - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - if (self->private_impl.f_end_of_data) { - status = wuffs_base__make_status(wuffs_base__note__end_of_data); - goto ok; - } - if (self->private_impl.f_quirks[18]) { - if (self->private_impl.f_quirks[11] || self->private_impl.f_quirks[12] || self->private_impl.f_quirks[17]) { - status = wuffs_base__make_status(wuffs_json__error__bad_quirk_combination); - goto exit; - } - } - if (self->private_impl.f_quirks[15] || self->private_impl.f_quirks[16]) { - if (a_dst) { - a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); - } - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - status = wuffs_json__decoder__decode_leading(self, a_dst, a_src); - if (a_dst) { - iop_a_dst = a_dst->data.ptr + a_dst->meta.wi; - } - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - } - v_expect = 7858; - label__outer__continue:; - while (true) { - while (true) { - if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) { - status = wuffs_base__make_status(wuffs_base__suspension__short_write); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2); - goto label__outer__continue; - } - v_whitespace_length = 0; - v_c = 0; - v_class = 0; - while (true) { - if (((uint64_t)(io2_a_src - iop_a_src)) <= 0) { - if (v_whitespace_length > 0) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(0)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(v_whitespace_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - v_whitespace_length = 0; - } - if (a_src && a_src->meta.closed) { - status = wuffs_base__make_status(wuffs_json__error__bad_input); - goto exit; - } - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3); - goto label__outer__continue; - } - v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); - v_class = WUFFS_JSON__LUT_CLASSES[v_c]; - if (v_class != 0) { - goto label__ws__break; - } - iop_a_src += 1; - if (v_whitespace_length >= 65534) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(0)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(65535)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - v_whitespace_length = 0; - goto label__outer__continue; - } - v_whitespace_length += 1; - } - label__ws__break:; - if (v_whitespace_length > 0) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(0)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(v_whitespace_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - v_whitespace_length = 0; - if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) { - goto label__outer__continue; - } - } - if (0 == (v_expect & (((uint32_t)(1)) << v_class))) { - status = wuffs_base__make_status(wuffs_json__error__bad_input); - goto exit; - } - if (v_class == 1) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(4194579)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - iop_a_src += 1; - label__string_loop_outer__continue:; - while (true) { - if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) { - status = wuffs_base__make_status(wuffs_base__suspension__short_write); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4); - goto label__string_loop_outer__continue; - } - v_string_length = 0; - label__string_loop_inner__continue:; - while (true) { - if (((uint64_t)(io2_a_src - iop_a_src)) <= 0) { - if (v_string_length > 0) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(4194819)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | - (((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - v_string_length = 0; - } - if (a_src && a_src->meta.closed) { - status = wuffs_base__make_status(wuffs_json__error__bad_input); - goto exit; - } - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5); - goto label__string_loop_outer__continue; - } - while (((uint64_t)(io2_a_src - iop_a_src)) > 4) { - v_c4 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); - if (0 != (WUFFS_JSON__LUT_CHARS[(255 & (v_c4 >> 0))] | - WUFFS_JSON__LUT_CHARS[(255 & (v_c4 >> 8))] | - WUFFS_JSON__LUT_CHARS[(255 & (v_c4 >> 16))] | - WUFFS_JSON__LUT_CHARS[(255 & (v_c4 >> 24))])) { - goto label__0__break; - } - iop_a_src += 4; - if (v_string_length > 65527) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(4194819)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | - (((uint64_t)((v_string_length + 4))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - v_string_length = 0; - goto label__string_loop_outer__continue; - } - v_string_length += 4; - } - label__0__break:; - v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); - v_char = WUFFS_JSON__LUT_CHARS[v_c]; - if (v_char == 0) { - iop_a_src += 1; - if (v_string_length >= 65531) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(4194819)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | - (((uint64_t)(65532)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - v_string_length = 0; - goto label__string_loop_outer__continue; - } - v_string_length += 1; - goto label__string_loop_inner__continue; - } else if (v_char == 1) { - if (v_string_length != 0) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(4194819)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | - (((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - v_string_length = 0; - } - goto label__string_loop_outer__break; - } else if (v_char == 2) { - if (v_string_length > 0) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(4194819)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | - (((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - v_string_length = 0; - if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) { - goto label__string_loop_outer__continue; - } - } - if (((uint64_t)(io2_a_src - iop_a_src)) < 2) { - if (a_src && a_src->meta.closed) { - status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape); - goto exit; - } - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(6); - goto label__string_loop_outer__continue; - } - v_c = ((uint8_t)((wuffs_base__peek_u16le__no_bounds_check(iop_a_src) >> 8))); - v_backslash = WUFFS_JSON__LUT_BACKSLASHES[v_c]; - if ((v_backslash & 128) != 0) { - iop_a_src += 2; - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)((6291456 | ((uint32_t)((v_backslash & 127)))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | - (((uint64_t)(2)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - goto label__string_loop_outer__continue; - } else if (v_backslash != 0) { - if (self->private_impl.f_quirks[WUFFS_JSON__LUT_QUIRKY_BACKSLASHES_QUIRKS[(v_backslash & 7)]]) { - iop_a_src += 2; - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)((6291456 | ((uint32_t)(WUFFS_JSON__LUT_QUIRKY_BACKSLASHES_CHARS[(v_backslash & 7)]))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | - (((uint64_t)(2)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - goto label__string_loop_outer__continue; - } - } else if (v_c == 117) { - if (((uint64_t)(io2_a_src - iop_a_src)) < 6) { - if (a_src && a_src->meta.closed) { - status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape); - goto exit; - } - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(7); - goto label__string_loop_outer__continue; - } - v_uni4_string = (((uint64_t)(wuffs_base__peek_u48le__no_bounds_check(iop_a_src))) >> 16); - v_uni4_value = 0; - v_uni4_ok = 128; - v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255 & (v_uni4_string >> 0))]; - v_uni4_ok &= v_c; - v_uni4_value |= (((uint32_t)((v_c & 15))) << 12); - v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255 & (v_uni4_string >> 8))]; - v_uni4_ok &= v_c; - v_uni4_value |= (((uint32_t)((v_c & 15))) << 8); - v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255 & (v_uni4_string >> 16))]; - v_uni4_ok &= v_c; - v_uni4_value |= (((uint32_t)((v_c & 15))) << 4); - v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255 & (v_uni4_string >> 24))]; - v_uni4_ok &= v_c; - v_uni4_value |= (((uint32_t)((v_c & 15))) << 0); - if (v_uni4_ok == 0) { - } else if ((v_uni4_value < 55296) || (57343 < v_uni4_value)) { - iop_a_src += 6; - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)((6291456 | v_uni4_value))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | - (((uint64_t)(6)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - goto label__string_loop_outer__continue; - } else if (v_uni4_value >= 56320) { - } else { - if (((uint64_t)(io2_a_src - iop_a_src)) < 12) { - if (a_src && a_src->meta.closed) { - if (self->private_impl.f_quirks[20]) { - iop_a_src += 6; - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(6356989)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | - (((uint64_t)(6)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - goto label__string_loop_outer__continue; - } - status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape); - goto exit; - } - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(8); - goto label__string_loop_outer__continue; - } - v_uni4_string = (wuffs_base__peek_u64le__no_bounds_check(iop_a_src + 4) >> 16); - if (((255 & (v_uni4_string >> 0)) != 92) || ((255 & (v_uni4_string >> 8)) != 117)) { - v_uni4_high_surrogate = 0; - v_uni4_value = 0; - v_uni4_ok = 0; - } else { - v_uni4_high_surrogate = (65536 + ((v_uni4_value - 55296) << 10)); - v_uni4_value = 0; - v_uni4_ok = 128; - v_uni4_string >>= 16; - v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255 & (v_uni4_string >> 0))]; - v_uni4_ok &= v_c; - v_uni4_value |= (((uint32_t)((v_c & 15))) << 12); - v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255 & (v_uni4_string >> 8))]; - v_uni4_ok &= v_c; - v_uni4_value |= (((uint32_t)((v_c & 15))) << 8); - v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255 & (v_uni4_string >> 16))]; - v_uni4_ok &= v_c; - v_uni4_value |= (((uint32_t)((v_c & 15))) << 4); - v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255 & (v_uni4_string >> 24))]; - v_uni4_ok &= v_c; - v_uni4_value |= (((uint32_t)((v_c & 15))) << 0); - } - if ((v_uni4_ok != 0) && (56320 <= v_uni4_value) && (v_uni4_value <= 57343)) { - v_uni4_value -= 56320; - iop_a_src += 12; - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)((6291456 | v_uni4_high_surrogate | v_uni4_value))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | - (((uint64_t)(12)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - goto label__string_loop_outer__continue; - } - } - if (self->private_impl.f_quirks[20]) { - if (((uint64_t)(io2_a_src - iop_a_src)) < 6) { - status = wuffs_base__make_status(wuffs_json__error__internal_error_inconsistent_i_o); - goto exit; - } - iop_a_src += 6; - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(6356989)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | - (((uint64_t)(6)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - goto label__string_loop_outer__continue; - } - } else if ((v_c == 85) && self->private_impl.f_quirks[2]) { - if (((uint64_t)(io2_a_src - iop_a_src)) < 10) { - if (a_src && a_src->meta.closed) { - status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape); - goto exit; - } - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(9); - goto label__string_loop_outer__continue; - } - v_uni8_string = wuffs_base__peek_u64le__no_bounds_check(iop_a_src + 2); - v_uni8_value = 0; - v_uni8_ok = 128; - v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255 & (v_uni8_string >> 0))]; - v_uni8_ok &= v_c; - v_uni8_value |= (((uint32_t)((v_c & 15))) << 28); - v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255 & (v_uni8_string >> 8))]; - v_uni8_ok &= v_c; - v_uni8_value |= (((uint32_t)((v_c & 15))) << 24); - v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255 & (v_uni8_string >> 16))]; - v_uni8_ok &= v_c; - v_uni8_value |= (((uint32_t)((v_c & 15))) << 20); - v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255 & (v_uni8_string >> 24))]; - v_uni8_ok &= v_c; - v_uni8_value |= (((uint32_t)((v_c & 15))) << 16); - v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255 & (v_uni8_string >> 32))]; - v_uni8_ok &= v_c; - v_uni8_value |= (((uint32_t)((v_c & 15))) << 12); - v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255 & (v_uni8_string >> 40))]; - v_uni8_ok &= v_c; - v_uni8_value |= (((uint32_t)((v_c & 15))) << 8); - v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255 & (v_uni8_string >> 48))]; - v_uni8_ok &= v_c; - v_uni8_value |= (((uint32_t)((v_c & 15))) << 4); - v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255 & (v_uni8_string >> 56))]; - v_uni8_ok &= v_c; - v_uni8_value |= (((uint32_t)((v_c & 15))) << 0); - if (v_uni8_ok == 0) { - } else if ((v_uni8_value < 55296) || ((57343 < v_uni8_value) && (v_uni8_value <= 1114111))) { - iop_a_src += 10; - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)((6291456 | (v_uni8_value & 2097151)))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | - (((uint64_t)(10)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - goto label__string_loop_outer__continue; - } else if (self->private_impl.f_quirks[20]) { - iop_a_src += 10; - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(6356989)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | - (((uint64_t)(10)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - goto label__string_loop_outer__continue; - } - } else if ((v_c == 120) && self->private_impl.f_quirks[9]) { - if (((uint64_t)(io2_a_src - iop_a_src)) < 4) { - if (a_src && a_src->meta.closed) { - status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape); - goto exit; - } - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(10); - goto label__string_loop_outer__continue; - } - v_backslash_x_string = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); - v_backslash_x_ok = 128; - v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255 & (v_backslash_x_string >> 16))]; - v_backslash_x_ok &= v_c; - v_backslash_x_value = ((uint8_t)(((v_c & 15) << 4))); - v_c = WUFFS_JSON__LUT_HEXADECIMAL_DIGITS[(255 & (v_backslash_x_string >> 24))]; - v_backslash_x_ok &= v_c; - v_backslash_x_value = ((uint8_t)((v_backslash_x_value | (v_c & 15)))); - if ((v_backslash_x_ok == 0) || ((v_backslash_x_string & 65535) != 30812)) { - status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape); - goto exit; - } - iop_a_src += 4; - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)((6291456 | ((uint32_t)(v_backslash_x_value))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | - (((uint64_t)(4)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - goto label__string_loop_outer__continue; - } - status = wuffs_base__make_status(wuffs_json__error__bad_backslash_escape); - goto exit; - } else if (v_char == 3) { - if (((uint64_t)(io2_a_src - iop_a_src)) < 2) { - if (v_string_length > 0) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(4194819)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | - (((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - v_string_length = 0; - if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) { - goto label__string_loop_outer__continue; - } - } - if (a_src && a_src->meta.closed) { - if (self->private_impl.f_quirks[20]) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(6356989)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - iop_a_src += 1; - goto label__string_loop_outer__continue; - } - status = wuffs_base__make_status(wuffs_json__error__bad_utf_8); - goto exit; - } - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(11); - goto label__string_loop_outer__continue; - } - v_multi_byte_utf8 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src))); - if ((v_multi_byte_utf8 & 49152) == 32768) { - v_multi_byte_utf8 = ((1984 & ((uint32_t)(v_multi_byte_utf8 << 6))) | (63 & (v_multi_byte_utf8 >> 8))); - iop_a_src += 2; - if (v_string_length >= 65528) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(4194819)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | - (((uint64_t)((v_string_length + 2))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - v_string_length = 0; - goto label__string_loop_outer__continue; - } - v_string_length += 2; - goto label__string_loop_inner__continue; - } - } else if (v_char == 4) { - if (((uint64_t)(io2_a_src - iop_a_src)) < 3) { - if (v_string_length > 0) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(4194819)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | - (((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - v_string_length = 0; - if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) { - goto label__string_loop_outer__continue; - } - } - if (a_src && a_src->meta.closed) { - if (self->private_impl.f_quirks[20]) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(6356989)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - iop_a_src += 1; - goto label__string_loop_outer__continue; - } - status = wuffs_base__make_status(wuffs_json__error__bad_utf_8); - goto exit; - } - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(12); - goto label__string_loop_outer__continue; - } - v_multi_byte_utf8 = ((uint32_t)(wuffs_base__peek_u24le__no_bounds_check(iop_a_src))); - if ((v_multi_byte_utf8 & 12632064) == 8421376) { - v_multi_byte_utf8 = ((61440 & ((uint32_t)(v_multi_byte_utf8 << 12))) | (4032 & (v_multi_byte_utf8 >> 2)) | (63 & (v_multi_byte_utf8 >> 16))); - if ((2047 < v_multi_byte_utf8) && ((v_multi_byte_utf8 < 55296) || (57343 < v_multi_byte_utf8))) { - iop_a_src += 3; - if (v_string_length >= 65528) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(4194819)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | - (((uint64_t)((v_string_length + 3))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - v_string_length = 0; - goto label__string_loop_outer__continue; - } - v_string_length += 3; - goto label__string_loop_inner__continue; - } - } - } else if (v_char == 5) { - if (((uint64_t)(io2_a_src - iop_a_src)) < 4) { - if (v_string_length > 0) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(4194819)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | - (((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - v_string_length = 0; - if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) { - goto label__string_loop_outer__continue; - } - } - if (a_src && a_src->meta.closed) { - if (self->private_impl.f_quirks[20]) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(6356989)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - iop_a_src += 1; - goto label__string_loop_outer__continue; - } - status = wuffs_base__make_status(wuffs_json__error__bad_utf_8); - goto exit; - } - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(13); - goto label__string_loop_outer__continue; - } - v_multi_byte_utf8 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); - if ((v_multi_byte_utf8 & 3233857536) == 2155905024) { - v_multi_byte_utf8 = ((1835008 & ((uint32_t)(v_multi_byte_utf8 << 18))) | - (258048 & ((uint32_t)(v_multi_byte_utf8 << 4))) | - (4032 & (v_multi_byte_utf8 >> 10)) | - (63 & (v_multi_byte_utf8 >> 24))); - if ((65535 < v_multi_byte_utf8) && (v_multi_byte_utf8 <= 1114111)) { - iop_a_src += 4; - if (v_string_length >= 65528) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(4194819)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | - (((uint64_t)((v_string_length + 4))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - v_string_length = 0; - goto label__string_loop_outer__continue; - } - v_string_length += 4; - goto label__string_loop_inner__continue; - } - } - } - if (v_string_length > 0) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(4194819)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | - (((uint64_t)(v_string_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - v_string_length = 0; - if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) { - goto label__string_loop_outer__continue; - } - } - if ((v_char & 128) != 0) { - if (self->private_impl.f_quirks[0]) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)((6291456 | ((uint32_t)((v_char & 127)))))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - iop_a_src += 1; - goto label__string_loop_outer__continue; - } - if (v_char == 138) { - status = wuffs_base__make_status(wuffs_json__error__bad_new_line_in_a_string); - goto exit; - } - status = wuffs_base__make_status(wuffs_json__error__bad_c0_control_code); - goto exit; - } - if (self->private_impl.f_quirks[20]) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(6356989)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - iop_a_src += 1; - goto label__string_loop_outer__continue; - } - status = wuffs_base__make_status(wuffs_json__error__bad_utf_8); - goto exit; - } - } - label__string_loop_outer__break:; - label__1__continue:; - while (true) { - if (((uint64_t)(io2_a_src - iop_a_src)) <= 0) { - if (a_src && a_src->meta.closed) { - status = wuffs_base__make_status(wuffs_json__error__bad_input); - goto exit; - } - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(14); - goto label__1__continue; - } - if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) { - status = wuffs_base__make_status(wuffs_base__suspension__short_write); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(15); - goto label__1__continue; - } - iop_a_src += 1; - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(4194579)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - goto label__1__break; - } - label__1__break:; - if (0 == (v_expect & (((uint32_t)(1)) << 4))) { - v_expect = 4104; - goto label__outer__continue; - } - goto label__goto_parsed_a_leaf_value__break; - } else if (v_class == 2) { - iop_a_src += 1; - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - if (0 == (v_expect & (((uint32_t)(1)) << 8))) { - if (self->private_impl.f_quirks[13]) { - v_expect = 4162; - } else { - v_expect = 4098; - } - } else { - if (self->private_impl.f_quirks[13]) { - v_expect = 8114; - } else { - v_expect = 7858; - } - } - goto label__outer__continue; - } else if (v_class == 3) { - iop_a_src += 1; - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - v_expect = 7858; - goto label__outer__continue; - } else if (v_class == 4) { - while (true) { - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - v_number_length = wuffs_json__decoder__decode_number(self, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - v_number_status = (v_number_length >> 8); - v_vminor = 10486787; - if ((v_number_length & 128) != 0) { - v_vminor = 10486785; - } - v_number_length = (v_number_length & 127); - if (v_number_status == 0) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(v_vminor)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(v_number_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - goto label__2__break; - } - while (v_number_length > 0) { - v_number_length -= 1; - if (iop_a_src > io1_a_src) { - iop_a_src--; - } else { - status = wuffs_base__make_status(wuffs_json__error__internal_error_inconsistent_i_o); - goto exit; - } - } - if (v_number_status == 1) { - if (self->private_impl.f_quirks[14]) { - if (a_dst) { - a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); - } - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16); - status = wuffs_json__decoder__decode_inf_nan(self, a_dst, a_src); - if (a_dst) { - iop_a_dst = a_dst->data.ptr + a_dst->meta.wi; - } - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - goto label__2__break; - } - status = wuffs_base__make_status(wuffs_json__error__bad_input); - goto exit; - } else if (v_number_status == 2) { - status = wuffs_base__make_status(wuffs_json__error__unsupported_number_length); - goto exit; - } else { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(17); - while (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) { - status = wuffs_base__make_status(wuffs_base__suspension__short_write); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(18); - } - } - } - label__2__break:; - goto label__goto_parsed_a_leaf_value__break; - } else if (v_class == 5) { - v_vminor = 2113553; - if (v_depth == 0) { - } else if (0 != (v_expect_after_value & (((uint32_t)(1)) << 6))) { - v_vminor = 2113601; - } else { - v_vminor = 2113569; - } - if (v_depth >= 1024) { - status = wuffs_base__make_status(wuffs_json__error__unsupported_recursion_depth); - goto exit; - } - v_stack_byte = (v_depth / 32); - v_stack_bit = (v_depth & 31); - self->private_data.f_stack[v_stack_byte] |= (((uint32_t)(1)) << v_stack_bit); - v_depth += 1; - iop_a_src += 1; - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(v_vminor)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - v_expect = 4162; - v_expect_after_value = 4164; - goto label__outer__continue; - } else if (v_class == 6) { - iop_a_src += 1; - if (v_depth <= 1) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(2101314)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - goto label__outer__break; - } - v_depth -= 1; - v_stack_byte = ((v_depth - 1) / 32); - v_stack_bit = ((v_depth - 1) & 31); - if (0 == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1)) << v_stack_bit))) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(2105410)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - v_expect = 4356; - v_expect_after_value = 4356; - } else { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(2113602)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - v_expect = 4164; - v_expect_after_value = 4164; - } - goto label__outer__continue; - } else if (v_class == 7) { - v_vminor = 2105361; - if (v_depth == 0) { - } else if (0 != (v_expect_after_value & (((uint32_t)(1)) << 6))) { - v_vminor = 2105409; - } else { - v_vminor = 2105377; - } - if (v_depth >= 1024) { - status = wuffs_base__make_status(wuffs_json__error__unsupported_recursion_depth); - goto exit; - } - v_stack_byte = (v_depth / 32); - v_stack_bit = (v_depth & 31); - self->private_data.f_stack[v_stack_byte] &= (4294967295 ^ (((uint32_t)(1)) << v_stack_bit)); - v_depth += 1; - iop_a_src += 1; - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(v_vminor)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - v_expect = 8114; - v_expect_after_value = 4356; - goto label__outer__continue; - } else if (v_class == 8) { - iop_a_src += 1; - if (v_depth <= 1) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(2101282)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - goto label__outer__break; - } - v_depth -= 1; - v_stack_byte = ((v_depth - 1) / 32); - v_stack_bit = ((v_depth - 1) & 31); - if (0 == (self->private_data.f_stack[v_stack_byte] & (((uint32_t)(1)) << v_stack_bit))) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(2105378)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - v_expect = 4356; - v_expect_after_value = 4356; - } else { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(2113570)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - v_expect = 4164; - v_expect_after_value = 4164; - } - goto label__outer__continue; - } else if (v_class == 9) { - v_match = wuffs_base__io_reader__match7(iop_a_src, io2_a_src, a_src,111546413966853); - if (v_match == 0) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(8388612)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(5)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - if (((uint64_t)(io2_a_src - iop_a_src)) < 5) { - status = wuffs_base__make_status(wuffs_json__error__internal_error_inconsistent_i_o); - goto exit; - } - iop_a_src += 5; - goto label__goto_parsed_a_leaf_value__break; - } else if (v_match == 1) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(19); - goto label__outer__continue; - } - } else if (v_class == 10) { - v_match = wuffs_base__io_reader__match7(iop_a_src, io2_a_src, a_src,435762131972); - if (v_match == 0) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(8388616)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(4)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - if (((uint64_t)(io2_a_src - iop_a_src)) < 4) { - status = wuffs_base__make_status(wuffs_json__error__internal_error_inconsistent_i_o); - goto exit; - } - iop_a_src += 4; - goto label__goto_parsed_a_leaf_value__break; - } else if (v_match == 1) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(20); - goto label__outer__continue; - } - } else if (v_class == 11) { - v_match = wuffs_base__io_reader__match7(iop_a_src, io2_a_src, a_src,465676103172); - if (v_match == 0) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(8388610)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(4)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - if (((uint64_t)(io2_a_src - iop_a_src)) < 4) { - status = wuffs_base__make_status(wuffs_json__error__internal_error_inconsistent_i_o); - goto exit; - } - iop_a_src += 4; - goto label__goto_parsed_a_leaf_value__break; - } else if (v_match == 1) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(21); - goto label__outer__continue; - } - if (self->private_impl.f_quirks[14]) { - if (a_dst) { - a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); - } - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(22); - status = wuffs_json__decoder__decode_inf_nan(self, a_dst, a_src); - if (a_dst) { - iop_a_dst = a_dst->data.ptr + a_dst->meta.wi; - } - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - goto label__goto_parsed_a_leaf_value__break; - } - } else if (v_class == 12) { - if (self->private_impl.f_quirks[11] || self->private_impl.f_quirks[12]) { - if (a_dst) { - a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); - } - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(23); - status = wuffs_json__decoder__decode_comment(self, a_dst, a_src); - if (a_dst) { - iop_a_dst = a_dst->data.ptr + a_dst->meta.wi; - } - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - if (self->private_impl.f_comment_type > 0) { - goto label__outer__continue; - } - } - } - status = wuffs_base__make_status(wuffs_json__error__bad_input); - goto exit; - } - label__goto_parsed_a_leaf_value__break:; - if (v_depth == 0) { - goto label__outer__break; - } - v_expect = v_expect_after_value; - } - label__outer__break:; - if (self->private_impl.f_quirks[17] || self->private_impl.f_quirks[18]) { - if (a_dst) { - a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); - } - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(24); - status = wuffs_json__decoder__decode_trailer(self, a_dst, a_src); - if (a_dst) { - iop_a_dst = a_dst->data.ptr + a_dst->meta.wi; - } - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - } - self->private_impl.f_end_of_data = true; - - ok: - self->private_impl.p_decode_tokens[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_tokens[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0; - self->private_data.s_decode_tokens[0].v_depth = v_depth; - self->private_data.s_decode_tokens[0].v_expect = v_expect; - self->private_data.s_decode_tokens[0].v_expect_after_value = v_expect_after_value; - - goto exit; - exit: - if (a_dst && a_dst->data.ptr) { - a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); - } - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - if (wuffs_base__status__is_error(&status)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - } - return status; -} - -// -------- func json.decoder.decode_number - -static uint32_t -wuffs_json__decoder__decode_number( - wuffs_json__decoder* self, - wuffs_base__io_buffer* a_src) { - uint8_t v_c = 0; - uint32_t v_n = 0; - uint32_t v_floating_point = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - while (true) { - v_n = 0; - if (((uint64_t)(io2_a_src - iop_a_src)) <= 0) { - if ( ! (a_src && a_src->meta.closed)) { - v_n |= 768; - } - goto label__goto_done__break; - } - v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); - if (v_c != 45) { - } else { - v_n += 1; - iop_a_src += 1; - if (((uint64_t)(io2_a_src - iop_a_src)) <= 0) { - if ( ! (a_src && a_src->meta.closed)) { - v_n |= 768; - } - v_n |= 256; - goto label__goto_done__break; - } - v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); - } - if (v_c == 48) { - v_n += 1; - iop_a_src += 1; - } else { - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - v_n = wuffs_json__decoder__decode_digits(self, a_src, v_n); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (v_n > 99) { - goto label__goto_done__break; - } - } - if (((uint64_t)(io2_a_src - iop_a_src)) <= 0) { - if ( ! (a_src && a_src->meta.closed)) { - v_n |= 768; - } - goto label__goto_done__break; - } - v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); - if (v_c != 46) { - } else { - if (v_n >= 99) { - v_n |= 512; - goto label__goto_done__break; - } - v_n += 1; - iop_a_src += 1; - v_floating_point = 128; - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - v_n = wuffs_json__decoder__decode_digits(self, a_src, v_n); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (v_n > 99) { - goto label__goto_done__break; - } - if (((uint64_t)(io2_a_src - iop_a_src)) <= 0) { - if ( ! (a_src && a_src->meta.closed)) { - v_n |= 768; - } - goto label__goto_done__break; - } - v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); - } - if ((v_c != 69) && (v_c != 101)) { - goto label__goto_done__break; - } - if (v_n >= 99) { - v_n |= 512; - goto label__goto_done__break; - } - v_n += 1; - iop_a_src += 1; - v_floating_point = 128; - if (((uint64_t)(io2_a_src - iop_a_src)) <= 0) { - if ( ! (a_src && a_src->meta.closed)) { - v_n |= 768; - } - v_n |= 256; - goto label__goto_done__break; - } - v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); - if ((v_c != 43) && (v_c != 45)) { - } else { - if (v_n >= 99) { - v_n |= 512; - goto label__goto_done__break; - } - v_n += 1; - iop_a_src += 1; - } - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - v_n = wuffs_json__decoder__decode_digits(self, a_src, v_n); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - goto label__goto_done__break; - } - label__goto_done__break:; - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - return (v_n | v_floating_point); -} - -// -------- func json.decoder.decode_digits - -static uint32_t -wuffs_json__decoder__decode_digits( - wuffs_json__decoder* self, - wuffs_base__io_buffer* a_src, - uint32_t a_n) { - uint8_t v_c = 0; - uint32_t v_n = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - v_n = a_n; - while (true) { - if (((uint64_t)(io2_a_src - iop_a_src)) <= 0) { - if ( ! (a_src && a_src->meta.closed)) { - v_n |= 768; - } - goto label__0__break; - } - v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); - if (0 == WUFFS_JSON__LUT_DECIMAL_DIGITS[v_c]) { - goto label__0__break; - } - if (v_n >= 99) { - v_n |= 512; - goto label__0__break; - } - v_n += 1; - iop_a_src += 1; - } - label__0__break:; - if (v_n == a_n) { - v_n |= 256; - } - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - return v_n; -} - -// -------- func json.decoder.decode_leading - -static wuffs_base__status -wuffs_json__decoder__decode_leading( - wuffs_json__decoder* self, - wuffs_base__token_buffer* a_dst, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint8_t v_c = 0; - uint32_t v_u = 0; - - wuffs_base__token* iop_a_dst = NULL; - wuffs_base__token* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - wuffs_base__token* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - wuffs_base__token* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_dst && a_dst->data.ptr) { - io0_a_dst = a_dst->data.ptr; - io1_a_dst = io0_a_dst + a_dst->meta.wi; - iop_a_dst = io1_a_dst; - io2_a_dst = io0_a_dst + a_dst->data.len; - if (a_dst->meta.closed) { - io2_a_dst = iop_a_dst; - } - } - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_decode_leading[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - self->private_impl.f_allow_leading_ars = self->private_impl.f_quirks[15]; - self->private_impl.f_allow_leading_ubom = self->private_impl.f_quirks[16]; - label__0__continue:; - while (self->private_impl.f_allow_leading_ars || self->private_impl.f_allow_leading_ubom) { - if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) { - status = wuffs_base__make_status(wuffs_base__suspension__short_write); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); - goto label__0__continue; - } - if (((uint64_t)(io2_a_src - iop_a_src)) <= 0) { - if (a_src && a_src->meta.closed) { - goto label__0__break; - } - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2); - goto label__0__continue; - } - v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); - if ((v_c == 30) && self->private_impl.f_allow_leading_ars) { - self->private_impl.f_allow_leading_ars = false; - iop_a_src += 1; - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(0)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - goto label__0__continue; - } else if ((v_c == 239) && self->private_impl.f_allow_leading_ubom) { - if (((uint64_t)(io2_a_src - iop_a_src)) < 3) { - if (a_src && a_src->meta.closed) { - goto label__0__break; - } - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3); - goto label__0__continue; - } - v_u = ((uint32_t)(wuffs_base__peek_u24le__no_bounds_check(iop_a_src))); - if (v_u == 12565487) { - self->private_impl.f_allow_leading_ubom = false; - iop_a_src += 3; - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(0)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(3)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - goto label__0__continue; - } - } - goto label__0__break; - } - label__0__break:; - - ok: - self->private_impl.p_decode_leading[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_leading[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - - goto exit; - exit: - if (a_dst && a_dst->data.ptr) { - a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); - } - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func json.decoder.decode_comment - -static wuffs_base__status -wuffs_json__decoder__decode_comment( - wuffs_json__decoder* self, - wuffs_base__token_buffer* a_dst, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint8_t v_c = 0; - uint16_t v_c2 = 0; - uint32_t v_length = 0; - - wuffs_base__token* iop_a_dst = NULL; - wuffs_base__token* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - wuffs_base__token* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - wuffs_base__token* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_dst && a_dst->data.ptr) { - io0_a_dst = a_dst->data.ptr; - io1_a_dst = io0_a_dst + a_dst->meta.wi; - iop_a_dst = io1_a_dst; - io2_a_dst = io0_a_dst + a_dst->data.len; - if (a_dst->meta.closed) { - io2_a_dst = iop_a_dst; - } - } - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_decode_comment[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - self->private_impl.f_comment_type = 0; - label__0__continue:; - while ((((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) || (((uint64_t)(io2_a_src - iop_a_src)) <= 1)) { - if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) { - status = wuffs_base__make_status(wuffs_base__suspension__short_write); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); - goto label__0__continue; - } - if (a_src && a_src->meta.closed) { - status = wuffs_base__make_status(NULL); - goto ok; - } - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2); - } - v_c2 = wuffs_base__peek_u16le__no_bounds_check(iop_a_src); - if ((v_c2 == 10799) && self->private_impl.f_quirks[11]) { - iop_a_src += 2; - v_length = 2; - label__comment_block__continue:; - while (true) { - if (((uint64_t)(io2_a_src - iop_a_src)) <= 1) { - if (v_length > 0) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(2)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | - (((uint64_t)(v_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - } - if (a_src && a_src->meta.closed) { - status = wuffs_base__make_status(wuffs_json__error__bad_input); - goto exit; - } - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3); - while (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) { - status = wuffs_base__make_status(wuffs_base__suspension__short_write); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4); - } - v_length = 0; - goto label__comment_block__continue; - } - v_c2 = wuffs_base__peek_u16le__no_bounds_check(iop_a_src); - if (v_c2 == 12074) { - iop_a_src += 2; - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(2)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)((v_length + 2))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - self->private_impl.f_comment_type = 1; - status = wuffs_base__make_status(NULL); - goto ok; - } - iop_a_src += 1; - if (v_length >= 65533) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(2)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | - (((uint64_t)((v_length + 1))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - while (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) { - status = wuffs_base__make_status(wuffs_base__suspension__short_write); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5); - } - v_length = 0; - goto label__comment_block__continue; - } - v_length += 1; - } - } else if ((v_c2 == 12079) && self->private_impl.f_quirks[12]) { - iop_a_src += 2; - v_length = 2; - label__comment_line__continue:; - while (true) { - if (((uint64_t)(io2_a_src - iop_a_src)) <= 0) { - if (a_src && a_src->meta.closed) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(4)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(v_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - self->private_impl.f_comment_type = 2; - status = wuffs_base__make_status(NULL); - goto ok; - } else if (v_length > 0) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(4)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | - (((uint64_t)(v_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - } - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(6); - while (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) { - status = wuffs_base__make_status(wuffs_base__suspension__short_write); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(7); - } - v_length = 0; - goto label__comment_line__continue; - } - v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); - if (v_c == 10) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(4)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(v_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - self->private_impl.f_comment_type = 2; - status = wuffs_base__make_status(NULL); - goto ok; - } - iop_a_src += 1; - if (v_length >= 65533) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(4)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(1)) << WUFFS_BASE__TOKEN__CONTINUED__SHIFT) | - (((uint64_t)((v_length + 1))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - while (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) { - status = wuffs_base__make_status(wuffs_base__suspension__short_write); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(8); - } - v_length = 0; - goto label__comment_line__continue; - } - v_length += 1; - } - } - - ok: - self->private_impl.p_decode_comment[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_comment[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - - goto exit; - exit: - if (a_dst && a_dst->data.ptr) { - a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); - } - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func json.decoder.decode_inf_nan - -static wuffs_base__status -wuffs_json__decoder__decode_inf_nan( - wuffs_json__decoder* self, - wuffs_base__token_buffer* a_dst, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint32_t v_c4 = 0; - uint32_t v_neg = 0; - - wuffs_base__token* iop_a_dst = NULL; - wuffs_base__token* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - wuffs_base__token* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - wuffs_base__token* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_dst && a_dst->data.ptr) { - io0_a_dst = a_dst->data.ptr; - io1_a_dst = io0_a_dst + a_dst->meta.wi; - iop_a_dst = io1_a_dst; - io2_a_dst = io0_a_dst + a_dst->data.len; - if (a_dst->meta.closed) { - io2_a_dst = iop_a_dst; - } - } - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_decode_inf_nan[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - label__0__continue:; - while (true) { - if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) { - status = wuffs_base__make_status(wuffs_base__suspension__short_write); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); - goto label__0__continue; - } - if (((uint64_t)(io2_a_src - iop_a_src)) <= 2) { - if (a_src && a_src->meta.closed) { - status = wuffs_base__make_status(wuffs_json__error__bad_input); - goto exit; - } - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2); - goto label__0__continue; - } - v_c4 = ((uint32_t)(wuffs_base__peek_u24le__no_bounds_check(iop_a_src))); - if ((v_c4 | 2105376) == 6712937) { - if (((uint64_t)(io2_a_src - iop_a_src)) > 7) { - if ((wuffs_base__peek_u64le__no_bounds_check(iop_a_src) | 2314885530818453536) == 8751735898823356009) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(10485792)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(8)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - iop_a_src += 8; - status = wuffs_base__make_status(NULL); - goto ok; - } - } else if ( ! (a_src && a_src->meta.closed)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3); - goto label__0__continue; - } - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(10485792)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(3)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - iop_a_src += 3; - status = wuffs_base__make_status(NULL); - goto ok; - } else if ((v_c4 | 2105376) == 7233902) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(10485888)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(3)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - iop_a_src += 3; - status = wuffs_base__make_status(NULL); - goto ok; - } else if ((v_c4 & 255) == 43) { - v_neg = 0; - } else if ((v_c4 & 255) == 45) { - v_neg = 1; - } else { - status = wuffs_base__make_status(wuffs_json__error__bad_input); - goto exit; - } - if (((uint64_t)(io2_a_src - iop_a_src)) <= 3) { - if (a_src && a_src->meta.closed) { - status = wuffs_base__make_status(wuffs_json__error__bad_input); - goto exit; - } - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4); - goto label__0__continue; - } - v_c4 = (wuffs_base__peek_u32le__no_bounds_check(iop_a_src) >> 8); - if ((v_c4 | 2105376) == 6712937) { - if (((uint64_t)(io2_a_src - iop_a_src)) > 8) { - if ((wuffs_base__peek_u64le__no_bounds_check(iop_a_src + 1) | 2314885530818453536) == 8751735898823356009) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)((10485760 | (((uint32_t)(32)) >> v_neg)))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(9)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - iop_a_src += 9; - status = wuffs_base__make_status(NULL); - goto ok; - } - } else if ( ! (a_src && a_src->meta.closed)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5); - goto label__0__continue; - } - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)((10485760 | (((uint32_t)(32)) >> v_neg)))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(4)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - iop_a_src += 4; - status = wuffs_base__make_status(NULL); - goto ok; - } else if ((v_c4 | 2105376) == 7233902) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)((10485760 | (((uint32_t)(128)) >> v_neg)))) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(4)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - iop_a_src += 4; - status = wuffs_base__make_status(NULL); - goto ok; - } - status = wuffs_base__make_status(wuffs_json__error__bad_input); - goto exit; - } - - ok: - self->private_impl.p_decode_inf_nan[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_inf_nan[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - - goto exit; - exit: - if (a_dst && a_dst->data.ptr) { - a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); - } - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func json.decoder.decode_trailer - -static wuffs_base__status -wuffs_json__decoder__decode_trailer( - wuffs_json__decoder* self, - wuffs_base__token_buffer* a_dst, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint8_t v_c = 0; - uint32_t v_whitespace_length = 0; - - wuffs_base__token* iop_a_dst = NULL; - wuffs_base__token* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - wuffs_base__token* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - wuffs_base__token* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_dst && a_dst->data.ptr) { - io0_a_dst = a_dst->data.ptr; - io1_a_dst = io0_a_dst + a_dst->meta.wi; - iop_a_dst = io1_a_dst; - io2_a_dst = io0_a_dst + a_dst->data.len; - if (a_dst->meta.closed) { - io2_a_dst = iop_a_dst; - } - } - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_decode_trailer[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - if (self->private_impl.f_quirks[18]) { - self->private_impl.f_trailer_stop = 10; - } else { - self->private_impl.f_trailer_stop = 0; - } - label__outer__continue:; - while (true) { - if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) { - status = wuffs_base__make_status(wuffs_base__suspension__short_write); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); - goto label__outer__continue; - } - v_whitespace_length = 0; - while (true) { - if (((uint64_t)(io2_a_src - iop_a_src)) <= 0) { - if (v_whitespace_length > 0) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(0)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(v_whitespace_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - } - if (a_src && a_src->meta.closed) { - goto label__outer__break; - } - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2); - goto label__outer__continue; - } - v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); - if (WUFFS_JSON__LUT_CLASSES[v_c] != 0) { - if (v_whitespace_length > 0) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(0)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)(v_whitespace_length)) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - } - if (self->private_impl.f_trailer_stop > 0) { - status = wuffs_base__make_status(wuffs_json__error__bad_input); - goto exit; - } - if (a_dst) { - a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); - } - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); - status = wuffs_json__decoder__decode_comment(self, a_dst, a_src); - if (a_dst) { - iop_a_dst = a_dst->data.ptr + a_dst->meta.wi; - } - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - if (self->private_impl.f_comment_type > 0) { - goto label__outer__continue; - } - status = wuffs_base__make_status(NULL); - goto ok; - } - iop_a_src += 1; - if ((v_whitespace_length >= 65534) || (v_c == self->private_impl.f_trailer_stop)) { - *iop_a_dst++ = wuffs_base__make_token( - (((uint64_t)(0)) << WUFFS_BASE__TOKEN__VALUE_MINOR__SHIFT) | - (((uint64_t)((v_whitespace_length + 1))) << WUFFS_BASE__TOKEN__LENGTH__SHIFT)); - if (v_c == self->private_impl.f_trailer_stop) { - status = wuffs_base__make_status(NULL); - goto ok; - } - goto label__outer__continue; - } - v_whitespace_length += 1; - } - } - label__outer__break:; - - ok: - self->private_impl.p_decode_trailer[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_trailer[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - - goto exit; - exit: - if (a_dst && a_dst->data.ptr) { - a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); - } - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__JSON) - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NETPBM) - -// ---------------- Status Codes Implementations - -const char wuffs_netpbm__error__bad_header[] = "#netpbm: bad header"; -const char wuffs_netpbm__error__truncated_input[] = "#netpbm: truncated input"; -const char wuffs_netpbm__error__unsupported_netpbm_file[] = "#netpbm: unsupported Netpbm file"; -const char wuffs_netpbm__note__internal_note_short_read[] = "@netpbm: internal note: short read"; - -// ---------------- Private Consts - -// ---------------- Private Initializer Prototypes - -// ---------------- Private Function Prototypes - -static wuffs_base__status -wuffs_netpbm__decoder__do_decode_image_config( - wuffs_netpbm__decoder* self, - wuffs_base__image_config* a_dst, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_netpbm__decoder__do_decode_frame_config( - wuffs_netpbm__decoder* self, - wuffs_base__frame_config* a_dst, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_netpbm__decoder__do_decode_frame( - wuffs_netpbm__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__pixel_blend a_blend, - wuffs_base__slice_u8 a_workbuf, - wuffs_base__decode_frame_options* a_opts); - -static wuffs_base__status -wuffs_netpbm__decoder__swizzle( - wuffs_netpbm__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src); - -// ---------------- VTables - -const wuffs_base__image_decoder__func_ptrs -wuffs_netpbm__decoder__func_ptrs_for__wuffs_base__image_decoder = { - (wuffs_base__status(*)(void*, - wuffs_base__pixel_buffer*, - wuffs_base__io_buffer*, - wuffs_base__pixel_blend, - wuffs_base__slice_u8, - wuffs_base__decode_frame_options*))(&wuffs_netpbm__decoder__decode_frame), - (wuffs_base__status(*)(void*, - wuffs_base__frame_config*, - wuffs_base__io_buffer*))(&wuffs_netpbm__decoder__decode_frame_config), - (wuffs_base__status(*)(void*, - wuffs_base__image_config*, - wuffs_base__io_buffer*))(&wuffs_netpbm__decoder__decode_image_config), - (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_netpbm__decoder__frame_dirty_rect), - (uint32_t(*)(const void*))(&wuffs_netpbm__decoder__num_animation_loops), - (uint64_t(*)(const void*))(&wuffs_netpbm__decoder__num_decoded_frame_configs), - (uint64_t(*)(const void*))(&wuffs_netpbm__decoder__num_decoded_frames), - (wuffs_base__status(*)(void*, - uint64_t, - uint64_t))(&wuffs_netpbm__decoder__restart_frame), - (wuffs_base__status(*)(void*, - uint32_t, - uint64_t))(&wuffs_netpbm__decoder__set_quirk), - (wuffs_base__empty_struct(*)(void*, - uint32_t, - bool))(&wuffs_netpbm__decoder__set_report_metadata), - (wuffs_base__status(*)(void*, - wuffs_base__io_buffer*, - wuffs_base__more_information*, - wuffs_base__io_buffer*))(&wuffs_netpbm__decoder__tell_me_more), - (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_netpbm__decoder__workbuf_len), -}; - -// ---------------- Initializer Implementations - -wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT -wuffs_netpbm__decoder__initialize( - wuffs_netpbm__decoder* self, - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options){ - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (sizeof(*self) != sizeof_star_self) { - return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver); - } - if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) || - (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) { - return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version); - } - - if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) { - // The whole point of this if-check is to detect an uninitialized *self. - // We disable the warning on GCC. Clang-5.0 does not have this warning. -#if !defined(__clang__) && defined(__GNUC__) -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wmaybe-uninitialized" -#endif - if (self->private_impl.magic != 0) { - return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed); - } -#if !defined(__clang__) && defined(__GNUC__) -#pragma GCC diagnostic pop -#endif - } else { - if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) { - memset(self, 0, sizeof(*self)); - options |= WUFFS_INITIALIZE__ALREADY_ZEROED; - } else { - memset(&(self->private_impl), 0, sizeof(self->private_impl)); - } - } - - self->private_impl.magic = WUFFS_BASE__MAGIC; - self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name = - wuffs_base__image_decoder__vtable_name; - self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers = - (const void*)(&wuffs_netpbm__decoder__func_ptrs_for__wuffs_base__image_decoder); - return wuffs_base__make_status(NULL); -} - -wuffs_netpbm__decoder* -wuffs_netpbm__decoder__alloc() { - wuffs_netpbm__decoder* x = - (wuffs_netpbm__decoder*)(calloc(sizeof(wuffs_netpbm__decoder), 1)); - if (!x) { - return NULL; - } - if (wuffs_netpbm__decoder__initialize( - x, sizeof(wuffs_netpbm__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) { - free(x); - return NULL; - } - return x; -} - -size_t -sizeof__wuffs_netpbm__decoder() { - return sizeof(wuffs_netpbm__decoder); -} - -// ---------------- Function Implementations - -// -------- func netpbm.decoder.set_quirk - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_netpbm__decoder__set_quirk( - wuffs_netpbm__decoder* self, - uint32_t a_key, - uint64_t a_value) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - - return wuffs_base__make_status(wuffs_base__error__unsupported_option); -} - -// -------- func netpbm.decoder.decode_image_config - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_netpbm__decoder__decode_image_config( - wuffs_netpbm__decoder* self, - wuffs_base__image_config* a_dst, - wuffs_base__io_buffer* a_src) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - if (!a_src) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - if ((self->private_impl.active_coroutine != 0) && - (self->private_impl.active_coroutine != 1)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); - } - self->private_impl.active_coroutine = 0; - wuffs_base__status status = wuffs_base__make_status(NULL); - - wuffs_base__status v_status = wuffs_base__make_status(NULL); - - uint32_t coro_susp_point = self->private_impl.p_decode_image_config[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - while (true) { - { - wuffs_base__status t_0 = wuffs_netpbm__decoder__do_decode_image_config(self, a_dst, a_src); - v_status = t_0; - } - if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { - status = wuffs_base__make_status(wuffs_netpbm__error__truncated_input); - goto exit; - } - status = v_status; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); - } - - ok: - self->private_impl.p_decode_image_config[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0; - - goto exit; - exit: - if (wuffs_base__status__is_error(&status)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - } - return status; -} - -// -------- func netpbm.decoder.do_decode_image_config - -static wuffs_base__status -wuffs_netpbm__decoder__do_decode_image_config( - wuffs_netpbm__decoder* self, - wuffs_base__image_config* a_dst, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint8_t v_c = 0; - uint32_t v_n = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - if (self->private_impl.f_call_sequence != 0) { - status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence); - goto exit; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_0 = *iop_a_src++; - v_c = t_0; - } - if (v_c != 80) { - status = wuffs_base__make_status(wuffs_netpbm__error__bad_header); - goto exit; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_1 = *iop_a_src++; - v_c = t_1; - } - if ((v_c < 49) || (55 < v_c)) { - status = wuffs_base__make_status(wuffs_netpbm__error__bad_header); - goto exit; - } else if (v_c == 53) { - self->private_impl.f_pixfmt = 536870920; - } else if (v_c == 54) { - self->private_impl.f_pixfmt = 2684356744; - } else { - status = wuffs_base__make_status(wuffs_netpbm__error__unsupported_netpbm_file); - goto exit; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_2 = *iop_a_src++; - v_c = t_2; - } - if (v_c != 10) { - status = wuffs_base__make_status(wuffs_netpbm__error__bad_header); - goto exit; - } - label__0__continue:; - while (true) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_3 = *iop_a_src++; - v_c = t_3; - } - if ((v_c == 32) || (v_c == 9)) { - goto label__0__continue; - } else if (v_c == 35) { - while (true) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_4 = *iop_a_src++; - v_c = t_4; - } - if (v_c == 10) { - goto label__1__break; - } - } - label__1__break:; - goto label__0__continue; - } else if ((v_c < 48) || (57 < v_c)) { - status = wuffs_base__make_status(wuffs_netpbm__error__bad_header); - goto exit; - } - self->private_impl.f_width = ((uint32_t)((v_c - 48))); - goto label__0__break; - } - label__0__break:; - while (true) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_5 = *iop_a_src++; - v_c = t_5; - } - if ((v_c == 32) || (v_c == 9)) { - goto label__2__break; - } else if ((v_c < 48) || (57 < v_c)) { - status = wuffs_base__make_status(wuffs_netpbm__error__bad_header); - goto exit; - } - v_n = ((10 * self->private_impl.f_width) + ((uint32_t)((v_c - 48)))); - if (v_n > 16777215) { - status = wuffs_base__make_status(wuffs_netpbm__error__unsupported_netpbm_file); - goto exit; - } - self->private_impl.f_width = v_n; - } - label__2__break:; - label__3__continue:; - while (true) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_6 = *iop_a_src++; - v_c = t_6; - } - if ((v_c == 32) || (v_c == 9)) { - goto label__3__continue; - } else if (v_c == 35) { - while (true) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_7 = *iop_a_src++; - v_c = t_7; - } - if (v_c == 10) { - goto label__4__break; - } - } - label__4__break:; - goto label__3__continue; - } else if ((v_c < 48) || (57 < v_c)) { - status = wuffs_base__make_status(wuffs_netpbm__error__bad_header); - goto exit; - } - self->private_impl.f_height = ((uint32_t)((v_c - 48))); - goto label__3__break; - } - label__3__break:; - label__5__continue:; - while (true) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_8 = *iop_a_src++; - v_c = t_8; - } - if ((v_c == 32) || (v_c == 9) || (v_c == 13)) { - goto label__5__continue; - } else if (v_c == 10) { - goto label__5__break; - } else if ((v_c < 48) || (57 < v_c)) { - status = wuffs_base__make_status(wuffs_netpbm__error__bad_header); - goto exit; - } - v_n = ((10 * self->private_impl.f_height) + ((uint32_t)((v_c - 48)))); - if (v_n > 16777215) { - status = wuffs_base__make_status(wuffs_netpbm__error__unsupported_netpbm_file); - goto exit; - } - self->private_impl.f_height = v_n; - } - label__5__break:; - label__6__continue:; - while (true) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_9 = *iop_a_src++; - v_c = t_9; - } - if ((v_c == 32) || (v_c == 9)) { - goto label__6__continue; - } else if (v_c == 35) { - while (true) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_10 = *iop_a_src++; - v_c = t_10; - } - if (v_c == 10) { - goto label__7__break; - } - } - label__7__break:; - goto label__6__continue; - } else if ((v_c < 48) || (57 < v_c)) { - status = wuffs_base__make_status(wuffs_netpbm__error__bad_header); - goto exit; - } - self->private_impl.f_max_value = ((uint32_t)((v_c - 48))); - goto label__6__break; - } - label__6__break:; - label__8__continue:; - while (true) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_11 = *iop_a_src++; - v_c = t_11; - } - if ((v_c == 32) || (v_c == 9) || (v_c == 13)) { - goto label__8__continue; - } else if (v_c == 10) { - goto label__8__break; - } else if ((v_c < 48) || (57 < v_c)) { - status = wuffs_base__make_status(wuffs_netpbm__error__bad_header); - goto exit; - } - v_n = ((10 * self->private_impl.f_max_value) + ((uint32_t)((v_c - 48)))); - if (v_n > 16777215) { - status = wuffs_base__make_status(wuffs_netpbm__error__unsupported_netpbm_file); - goto exit; - } - self->private_impl.f_max_value = v_n; - } - label__8__break:; - if (self->private_impl.f_max_value != 255) { - status = wuffs_base__make_status(wuffs_netpbm__error__unsupported_netpbm_file); - goto exit; - } - self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))); - if (a_dst != NULL) { - wuffs_base__image_config__set( - a_dst, - self->private_impl.f_pixfmt, - 0, - self->private_impl.f_width, - self->private_impl.f_height, - self->private_impl.f_frame_config_io_position, - false); - } - self->private_impl.f_call_sequence = 32; - - goto ok; - ok: - self->private_impl.p_do_decode_image_config[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_do_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func netpbm.decoder.decode_frame_config - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_netpbm__decoder__decode_frame_config( - wuffs_netpbm__decoder* self, - wuffs_base__frame_config* a_dst, - wuffs_base__io_buffer* a_src) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - if (!a_src) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - if ((self->private_impl.active_coroutine != 0) && - (self->private_impl.active_coroutine != 2)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); - } - self->private_impl.active_coroutine = 0; - wuffs_base__status status = wuffs_base__make_status(NULL); - - wuffs_base__status v_status = wuffs_base__make_status(NULL); - - uint32_t coro_susp_point = self->private_impl.p_decode_frame_config[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - while (true) { - { - wuffs_base__status t_0 = wuffs_netpbm__decoder__do_decode_frame_config(self, a_dst, a_src); - v_status = t_0; - } - if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { - status = wuffs_base__make_status(wuffs_netpbm__error__truncated_input); - goto exit; - } - status = v_status; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); - } - - ok: - self->private_impl.p_decode_frame_config[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0; - - goto exit; - exit: - if (wuffs_base__status__is_error(&status)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - } - return status; -} - -// -------- func netpbm.decoder.do_decode_frame_config - -static wuffs_base__status -wuffs_netpbm__decoder__do_decode_frame_config( - wuffs_netpbm__decoder* self, - wuffs_base__frame_config* a_dst, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - if (self->private_impl.f_call_sequence == 32) { - } else if (self->private_impl.f_call_sequence < 32) { - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - status = wuffs_netpbm__decoder__do_decode_image_config(self, NULL, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - } else if (self->private_impl.f_call_sequence == 40) { - if (self->private_impl.f_frame_config_io_position != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) { - status = wuffs_base__make_status(wuffs_base__error__bad_restart); - goto exit; - } - } else if (self->private_impl.f_call_sequence == 64) { - self->private_impl.f_call_sequence = 96; - status = wuffs_base__make_status(wuffs_base__note__end_of_data); - goto ok; - } else { - status = wuffs_base__make_status(wuffs_base__note__end_of_data); - goto ok; - } - if (a_dst != NULL) { - wuffs_base__frame_config__set( - a_dst, - wuffs_base__utility__make_rect_ie_u32( - 0, - 0, - self->private_impl.f_width, - self->private_impl.f_height), - ((wuffs_base__flicks)(0)), - 0, - self->private_impl.f_frame_config_io_position, - 0, - false, - false, - 0); - } - self->private_impl.f_call_sequence = 64; - - ok: - self->private_impl.p_do_decode_frame_config[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_do_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func netpbm.decoder.decode_frame - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_netpbm__decoder__decode_frame( - wuffs_netpbm__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__pixel_blend a_blend, - wuffs_base__slice_u8 a_workbuf, - wuffs_base__decode_frame_options* a_opts) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - if (!a_dst || !a_src) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - if ((self->private_impl.active_coroutine != 0) && - (self->private_impl.active_coroutine != 3)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); - } - self->private_impl.active_coroutine = 0; - wuffs_base__status status = wuffs_base__make_status(NULL); - - wuffs_base__status v_status = wuffs_base__make_status(NULL); - - uint32_t coro_susp_point = self->private_impl.p_decode_frame[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - while (true) { - { - wuffs_base__status t_0 = wuffs_netpbm__decoder__do_decode_frame(self, - a_dst, - a_src, - a_blend, - a_workbuf, - a_opts); - v_status = t_0; - } - if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { - status = wuffs_base__make_status(wuffs_netpbm__error__truncated_input); - goto exit; - } - status = v_status; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); - } - - ok: - self->private_impl.p_decode_frame[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0; - - goto exit; - exit: - if (wuffs_base__status__is_error(&status)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - } - return status; -} - -// -------- func netpbm.decoder.do_decode_frame - -static wuffs_base__status -wuffs_netpbm__decoder__do_decode_frame( - wuffs_netpbm__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__pixel_blend a_blend, - wuffs_base__slice_u8 a_workbuf, - wuffs_base__decode_frame_options* a_opts) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - wuffs_base__status v_status = wuffs_base__make_status(NULL); - - uint32_t coro_susp_point = self->private_impl.p_do_decode_frame[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - if (self->private_impl.f_call_sequence == 64) { - } else if (self->private_impl.f_call_sequence < 64) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - status = wuffs_netpbm__decoder__do_decode_frame_config(self, NULL, a_src); - if (status.repr) { - goto suspend; - } - } else { - status = wuffs_base__make_status(wuffs_base__note__end_of_data); - goto ok; - } - self->private_impl.f_dst_x = 0; - self->private_impl.f_dst_y = 0; - v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler, - wuffs_base__pixel_buffer__pixel_format(a_dst), - wuffs_base__pixel_buffer__palette(a_dst), - wuffs_base__utility__make_pixel_format(self->private_impl.f_pixfmt), - wuffs_base__utility__empty_slice_u8(), - a_blend); - if ( ! wuffs_base__status__is_ok(&v_status)) { - status = v_status; - if (wuffs_base__status__is_error(&status)) { - goto exit; - } else if (wuffs_base__status__is_suspension(&status)) { - status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension); - goto exit; - } - goto ok; - } - while (true) { - v_status = wuffs_netpbm__decoder__swizzle(self, a_dst, a_src); - if (wuffs_base__status__is_ok(&v_status)) { - goto label__0__break; - } else if (v_status.repr != wuffs_netpbm__note__internal_note_short_read) { - status = v_status; - if (wuffs_base__status__is_error(&status)) { - goto exit; - } else if (wuffs_base__status__is_suspension(&status)) { - status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension); - goto exit; - } - goto ok; - } - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2); - } - label__0__break:; - self->private_impl.f_call_sequence = 96; - - ok: - self->private_impl.p_do_decode_frame[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_do_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - - goto exit; - exit: - return status; -} - -// -------- func netpbm.decoder.swizzle - -static wuffs_base__status -wuffs_netpbm__decoder__swizzle( - wuffs_netpbm__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - wuffs_base__pixel_format v_dst_pixfmt = {0}; - uint32_t v_dst_bits_per_pixel = 0; - uint32_t v_dst_bytes_per_pixel = 0; - uint64_t v_dst_bytes_per_row = 0; - uint32_t v_src_bytes_per_pixel = 0; - wuffs_base__table_u8 v_tab = {0}; - wuffs_base__slice_u8 v_dst = {0}; - uint64_t v_i = 0; - uint64_t v_j = 0; - uint64_t v_n = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst); - v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt); - if ((v_dst_bits_per_pixel & 7) != 0) { - status = wuffs_base__make_status(wuffs_base__error__unsupported_option); - goto exit; - } - v_dst_bytes_per_pixel = (v_dst_bits_per_pixel / 8); - v_dst_bytes_per_row = ((uint64_t)((self->private_impl.f_width * v_dst_bytes_per_pixel))); - v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0); - while (true) { - if (self->private_impl.f_dst_x == self->private_impl.f_width) { - self->private_impl.f_dst_x = 0; - self->private_impl.f_dst_y += 1; - if (self->private_impl.f_dst_y >= self->private_impl.f_height) { - goto label__0__break; - } - } - v_dst = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y); - if (v_dst_bytes_per_row < ((uint64_t)(v_dst.len))) { - v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_bytes_per_row); - } - v_i = (((uint64_t)(self->private_impl.f_dst_x)) * ((uint64_t)(v_dst_bytes_per_pixel))); - if (v_i >= ((uint64_t)(v_dst.len))) { - v_src_bytes_per_pixel = 1; - if (self->private_impl.f_pixfmt == 2684356744) { - v_src_bytes_per_pixel = 3; - } - v_n = (((uint64_t)(io2_a_src - iop_a_src)) / ((uint64_t)(v_src_bytes_per_pixel))); - v_n = wuffs_base__u64__min(v_n, ((uint64_t)(((uint32_t)(self->private_impl.f_width - self->private_impl.f_dst_x))))); - v_j = v_n; - while (v_j >= 8) { - if (((uint64_t)(io2_a_src - iop_a_src)) >= ((uint64_t)((v_src_bytes_per_pixel * 8)))) { - iop_a_src += (v_src_bytes_per_pixel * 8); - } - v_j -= 8; - } - while (v_j > 0) { - if (((uint64_t)(io2_a_src - iop_a_src)) >= ((uint64_t)((v_src_bytes_per_pixel * 1)))) { - iop_a_src += (v_src_bytes_per_pixel * 1); - } - v_j -= 1; - } - } else { - v_n = wuffs_base__pixel_swizzler__swizzle_interleaved_from_reader( - &self->private_impl.f_swizzler, - wuffs_base__slice_u8__subslice_i(v_dst, v_i), - wuffs_base__pixel_buffer__palette(a_dst), - &iop_a_src, - io2_a_src); - } - if (v_n == 0) { - status = wuffs_base__make_status(wuffs_netpbm__note__internal_note_short_read); - goto ok; - } - wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)((v_n & 4294967295)))); - } - label__0__break:; - status = wuffs_base__make_status(NULL); - goto ok; - - ok: - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func netpbm.decoder.frame_dirty_rect - -WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32 -wuffs_netpbm__decoder__frame_dirty_rect( - const wuffs_netpbm__decoder* self) { - if (!self) { - return wuffs_base__utility__empty_rect_ie_u32(); - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return wuffs_base__utility__empty_rect_ie_u32(); - } - - return wuffs_base__utility__make_rect_ie_u32( - 0, - 0, - self->private_impl.f_width, - self->private_impl.f_height); -} - -// -------- func netpbm.decoder.num_animation_loops - -WUFFS_BASE__MAYBE_STATIC uint32_t -wuffs_netpbm__decoder__num_animation_loops( - const wuffs_netpbm__decoder* self) { - if (!self) { - return 0; - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return 0; - } - - return 0; -} - -// -------- func netpbm.decoder.num_decoded_frame_configs - -WUFFS_BASE__MAYBE_STATIC uint64_t -wuffs_netpbm__decoder__num_decoded_frame_configs( - const wuffs_netpbm__decoder* self) { - if (!self) { - return 0; - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return 0; - } - - if (self->private_impl.f_call_sequence > 32) { - return 1; - } - return 0; -} - -// -------- func netpbm.decoder.num_decoded_frames - -WUFFS_BASE__MAYBE_STATIC uint64_t -wuffs_netpbm__decoder__num_decoded_frames( - const wuffs_netpbm__decoder* self) { - if (!self) { - return 0; - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return 0; - } - - if (self->private_impl.f_call_sequence > 64) { - return 1; - } - return 0; -} - -// -------- func netpbm.decoder.restart_frame - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_netpbm__decoder__restart_frame( - wuffs_netpbm__decoder* self, - uint64_t a_index, - uint64_t a_io_position) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - - if (self->private_impl.f_call_sequence < 32) { - return wuffs_base__make_status(wuffs_base__error__bad_call_sequence); - } - if ((a_index != 0) || (a_io_position != self->private_impl.f_frame_config_io_position)) { - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - self->private_impl.f_call_sequence = 40; - return wuffs_base__make_status(NULL); -} - -// -------- func netpbm.decoder.set_report_metadata - -WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct -wuffs_netpbm__decoder__set_report_metadata( - wuffs_netpbm__decoder* self, - uint32_t a_fourcc, - bool a_report) { - return wuffs_base__make_empty_struct(); -} - -// -------- func netpbm.decoder.tell_me_more - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_netpbm__decoder__tell_me_more( - wuffs_netpbm__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__more_information* a_minfo, - wuffs_base__io_buffer* a_src) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - if (!a_dst || !a_src) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - if ((self->private_impl.active_coroutine != 0) && - (self->private_impl.active_coroutine != 4)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); - } - self->private_impl.active_coroutine = 0; - wuffs_base__status status = wuffs_base__make_status(NULL); - - status = wuffs_base__make_status(wuffs_base__error__no_more_information); - goto exit; - - goto ok; - ok: - goto exit; - exit: - if (wuffs_base__status__is_error(&status)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - } - return status; -} - -// -------- func netpbm.decoder.workbuf_len - -WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 -wuffs_netpbm__decoder__workbuf_len( - const wuffs_netpbm__decoder* self) { - if (!self) { - return wuffs_base__utility__empty_range_ii_u64(); - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return wuffs_base__utility__empty_range_ii_u64(); - } - - return wuffs_base__utility__make_range_ii_u64(0, 0); -} - -#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NETPBM) - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NIE) - -// ---------------- Status Codes Implementations - -const char wuffs_nie__error__bad_header[] = "#nie: bad header"; -const char wuffs_nie__error__truncated_input[] = "#nie: truncated input"; -const char wuffs_nie__error__unsupported_nie_file[] = "#nie: unsupported NIE file"; -const char wuffs_nie__note__internal_note_short_read[] = "@nie: internal note: short read"; - -// ---------------- Private Consts - -// ---------------- Private Initializer Prototypes - -// ---------------- Private Function Prototypes - -static wuffs_base__status -wuffs_nie__decoder__do_decode_image_config( - wuffs_nie__decoder* self, - wuffs_base__image_config* a_dst, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_nie__decoder__do_decode_frame_config( - wuffs_nie__decoder* self, - wuffs_base__frame_config* a_dst, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_nie__decoder__do_decode_frame( - wuffs_nie__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__pixel_blend a_blend, - wuffs_base__slice_u8 a_workbuf, - wuffs_base__decode_frame_options* a_opts); - -static wuffs_base__status -wuffs_nie__decoder__swizzle( - wuffs_nie__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src); - -// ---------------- VTables - -const wuffs_base__image_decoder__func_ptrs -wuffs_nie__decoder__func_ptrs_for__wuffs_base__image_decoder = { - (wuffs_base__status(*)(void*, - wuffs_base__pixel_buffer*, - wuffs_base__io_buffer*, - wuffs_base__pixel_blend, - wuffs_base__slice_u8, - wuffs_base__decode_frame_options*))(&wuffs_nie__decoder__decode_frame), - (wuffs_base__status(*)(void*, - wuffs_base__frame_config*, - wuffs_base__io_buffer*))(&wuffs_nie__decoder__decode_frame_config), - (wuffs_base__status(*)(void*, - wuffs_base__image_config*, - wuffs_base__io_buffer*))(&wuffs_nie__decoder__decode_image_config), - (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_nie__decoder__frame_dirty_rect), - (uint32_t(*)(const void*))(&wuffs_nie__decoder__num_animation_loops), - (uint64_t(*)(const void*))(&wuffs_nie__decoder__num_decoded_frame_configs), - (uint64_t(*)(const void*))(&wuffs_nie__decoder__num_decoded_frames), - (wuffs_base__status(*)(void*, - uint64_t, - uint64_t))(&wuffs_nie__decoder__restart_frame), - (wuffs_base__status(*)(void*, - uint32_t, - uint64_t))(&wuffs_nie__decoder__set_quirk), - (wuffs_base__empty_struct(*)(void*, - uint32_t, - bool))(&wuffs_nie__decoder__set_report_metadata), - (wuffs_base__status(*)(void*, - wuffs_base__io_buffer*, - wuffs_base__more_information*, - wuffs_base__io_buffer*))(&wuffs_nie__decoder__tell_me_more), - (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_nie__decoder__workbuf_len), -}; - -// ---------------- Initializer Implementations - -wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT -wuffs_nie__decoder__initialize( - wuffs_nie__decoder* self, - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options){ - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (sizeof(*self) != sizeof_star_self) { - return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver); - } - if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) || - (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) { - return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version); - } - - if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) { - // The whole point of this if-check is to detect an uninitialized *self. - // We disable the warning on GCC. Clang-5.0 does not have this warning. -#if !defined(__clang__) && defined(__GNUC__) -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wmaybe-uninitialized" -#endif - if (self->private_impl.magic != 0) { - return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed); - } -#if !defined(__clang__) && defined(__GNUC__) -#pragma GCC diagnostic pop -#endif - } else { - if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) { - memset(self, 0, sizeof(*self)); - options |= WUFFS_INITIALIZE__ALREADY_ZEROED; - } else { - memset(&(self->private_impl), 0, sizeof(self->private_impl)); - } - } - - self->private_impl.magic = WUFFS_BASE__MAGIC; - self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name = - wuffs_base__image_decoder__vtable_name; - self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers = - (const void*)(&wuffs_nie__decoder__func_ptrs_for__wuffs_base__image_decoder); - return wuffs_base__make_status(NULL); -} - -wuffs_nie__decoder* -wuffs_nie__decoder__alloc() { - wuffs_nie__decoder* x = - (wuffs_nie__decoder*)(calloc(sizeof(wuffs_nie__decoder), 1)); - if (!x) { - return NULL; - } - if (wuffs_nie__decoder__initialize( - x, sizeof(wuffs_nie__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) { - free(x); - return NULL; - } - return x; -} - -size_t -sizeof__wuffs_nie__decoder() { - return sizeof(wuffs_nie__decoder); -} - -// ---------------- Function Implementations - -// -------- func nie.decoder.set_quirk - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_nie__decoder__set_quirk( - wuffs_nie__decoder* self, - uint32_t a_key, - uint64_t a_value) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - - return wuffs_base__make_status(wuffs_base__error__unsupported_option); -} - -// -------- func nie.decoder.decode_image_config - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_nie__decoder__decode_image_config( - wuffs_nie__decoder* self, - wuffs_base__image_config* a_dst, - wuffs_base__io_buffer* a_src) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - if (!a_src) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - if ((self->private_impl.active_coroutine != 0) && - (self->private_impl.active_coroutine != 1)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); - } - self->private_impl.active_coroutine = 0; - wuffs_base__status status = wuffs_base__make_status(NULL); - - wuffs_base__status v_status = wuffs_base__make_status(NULL); - - uint32_t coro_susp_point = self->private_impl.p_decode_image_config[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - while (true) { - { - wuffs_base__status t_0 = wuffs_nie__decoder__do_decode_image_config(self, a_dst, a_src); - v_status = t_0; - } - if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { - status = wuffs_base__make_status(wuffs_nie__error__truncated_input); - goto exit; - } - status = v_status; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); - } - - ok: - self->private_impl.p_decode_image_config[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0; - - goto exit; - exit: - if (wuffs_base__status__is_error(&status)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - } - return status; -} - -// -------- func nie.decoder.do_decode_image_config - -static wuffs_base__status -wuffs_nie__decoder__do_decode_image_config( - wuffs_nie__decoder* self, - wuffs_base__image_config* a_dst, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint32_t v_a = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - if (self->private_impl.f_call_sequence != 0) { - status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence); - goto exit; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - uint32_t t_0; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_0 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); - iop_a_src += 4; - } else { - self->private_data.s_do_decode_image_config[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; - uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0; - if (num_bits_0 == 24) { - t_0 = ((uint32_t)(*scratch)); - break; - } - num_bits_0 += 8; - *scratch |= ((uint64_t)(num_bits_0)) << 56; - } - } - v_a = t_0; - } - if (v_a != 1169146734) { - status = wuffs_base__make_status(wuffs_nie__error__bad_header); - goto exit; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); - uint32_t t_1; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_1 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); - iop_a_src += 4; - } else { - self->private_data.s_do_decode_image_config[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; - uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1; - if (num_bits_1 == 24) { - t_1 = ((uint32_t)(*scratch)); - break; - } - num_bits_1 += 8; - *scratch |= ((uint64_t)(num_bits_1)) << 56; - } - } - v_a = t_1; - } - if (v_a == 879649535) { - self->private_impl.f_pixfmt = 2164295816; - } else if (v_a == 946758399) { - self->private_impl.f_pixfmt = 2164308923; - } else if (v_a == 879780607) { - status = wuffs_base__make_status(wuffs_nie__error__unsupported_nie_file); - goto exit; - } else if (v_a == 946889471) { - status = wuffs_base__make_status(wuffs_nie__error__unsupported_nie_file); - goto exit; - } else { - status = wuffs_base__make_status(wuffs_nie__error__bad_header); - goto exit; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); - uint32_t t_2; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_2 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); - iop_a_src += 4; - } else { - self->private_data.s_do_decode_image_config[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; - uint32_t num_bits_2 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_2; - if (num_bits_2 == 24) { - t_2 = ((uint32_t)(*scratch)); - break; - } - num_bits_2 += 8; - *scratch |= ((uint64_t)(num_bits_2)) << 56; - } - } - v_a = t_2; - } - if (v_a > 2147483647) { - status = wuffs_base__make_status(wuffs_nie__error__bad_header); - goto exit; - } else if (v_a > 16777215) { - status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension); - goto exit; - } - self->private_impl.f_width = v_a; - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7); - uint32_t t_3; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_3 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); - iop_a_src += 4; - } else { - self->private_data.s_do_decode_image_config[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; - uint32_t num_bits_3 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_3; - if (num_bits_3 == 24) { - t_3 = ((uint32_t)(*scratch)); - break; - } - num_bits_3 += 8; - *scratch |= ((uint64_t)(num_bits_3)) << 56; - } - } - v_a = t_3; - } - if (v_a > 2147483647) { - status = wuffs_base__make_status(wuffs_nie__error__bad_header); - goto exit; - } else if (v_a > 16777215) { - status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension); - goto exit; - } - self->private_impl.f_height = v_a; - if (a_dst != NULL) { - wuffs_base__image_config__set( - a_dst, - self->private_impl.f_pixfmt, - 0, - self->private_impl.f_width, - self->private_impl.f_height, - 16, - false); - } - self->private_impl.f_call_sequence = 32; - - goto ok; - ok: - self->private_impl.p_do_decode_image_config[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_do_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func nie.decoder.decode_frame_config - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_nie__decoder__decode_frame_config( - wuffs_nie__decoder* self, - wuffs_base__frame_config* a_dst, - wuffs_base__io_buffer* a_src) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - if (!a_src) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - if ((self->private_impl.active_coroutine != 0) && - (self->private_impl.active_coroutine != 2)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); - } - self->private_impl.active_coroutine = 0; - wuffs_base__status status = wuffs_base__make_status(NULL); - - wuffs_base__status v_status = wuffs_base__make_status(NULL); - - uint32_t coro_susp_point = self->private_impl.p_decode_frame_config[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - while (true) { - { - wuffs_base__status t_0 = wuffs_nie__decoder__do_decode_frame_config(self, a_dst, a_src); - v_status = t_0; - } - if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { - status = wuffs_base__make_status(wuffs_nie__error__truncated_input); - goto exit; - } - status = v_status; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); - } - - ok: - self->private_impl.p_decode_frame_config[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0; - - goto exit; - exit: - if (wuffs_base__status__is_error(&status)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - } - return status; -} - -// -------- func nie.decoder.do_decode_frame_config - -static wuffs_base__status -wuffs_nie__decoder__do_decode_frame_config( - wuffs_nie__decoder* self, - wuffs_base__frame_config* a_dst, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - if (self->private_impl.f_call_sequence == 32) { - } else if (self->private_impl.f_call_sequence < 32) { - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - status = wuffs_nie__decoder__do_decode_image_config(self, NULL, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - } else if (self->private_impl.f_call_sequence == 40) { - if (16 != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) { - status = wuffs_base__make_status(wuffs_base__error__bad_restart); - goto exit; - } - } else if (self->private_impl.f_call_sequence == 64) { - self->private_impl.f_call_sequence = 96; - status = wuffs_base__make_status(wuffs_base__note__end_of_data); - goto ok; - } else { - status = wuffs_base__make_status(wuffs_base__note__end_of_data); - goto ok; - } - if (a_dst != NULL) { - wuffs_base__frame_config__set( - a_dst, - wuffs_base__utility__make_rect_ie_u32( - 0, - 0, - self->private_impl.f_width, - self->private_impl.f_height), - ((wuffs_base__flicks)(0)), - 0, - 16, - 0, - false, - false, - 0); - } - self->private_impl.f_call_sequence = 64; - - ok: - self->private_impl.p_do_decode_frame_config[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_do_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func nie.decoder.decode_frame - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_nie__decoder__decode_frame( - wuffs_nie__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__pixel_blend a_blend, - wuffs_base__slice_u8 a_workbuf, - wuffs_base__decode_frame_options* a_opts) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - if (!a_dst || !a_src) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - if ((self->private_impl.active_coroutine != 0) && - (self->private_impl.active_coroutine != 3)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); - } - self->private_impl.active_coroutine = 0; - wuffs_base__status status = wuffs_base__make_status(NULL); - - wuffs_base__status v_status = wuffs_base__make_status(NULL); - - uint32_t coro_susp_point = self->private_impl.p_decode_frame[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - while (true) { - { - wuffs_base__status t_0 = wuffs_nie__decoder__do_decode_frame(self, - a_dst, - a_src, - a_blend, - a_workbuf, - a_opts); - v_status = t_0; - } - if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { - status = wuffs_base__make_status(wuffs_nie__error__truncated_input); - goto exit; - } - status = v_status; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); - } - - ok: - self->private_impl.p_decode_frame[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0; - - goto exit; - exit: - if (wuffs_base__status__is_error(&status)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - } - return status; -} - -// -------- func nie.decoder.do_decode_frame - -static wuffs_base__status -wuffs_nie__decoder__do_decode_frame( - wuffs_nie__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__pixel_blend a_blend, - wuffs_base__slice_u8 a_workbuf, - wuffs_base__decode_frame_options* a_opts) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - wuffs_base__status v_status = wuffs_base__make_status(NULL); - - uint32_t coro_susp_point = self->private_impl.p_do_decode_frame[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - if (self->private_impl.f_call_sequence == 64) { - } else if (self->private_impl.f_call_sequence < 64) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - status = wuffs_nie__decoder__do_decode_frame_config(self, NULL, a_src); - if (status.repr) { - goto suspend; - } - } else { - status = wuffs_base__make_status(wuffs_base__note__end_of_data); - goto ok; - } - self->private_impl.f_dst_x = 0; - self->private_impl.f_dst_y = 0; - v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler, - wuffs_base__pixel_buffer__pixel_format(a_dst), - wuffs_base__pixel_buffer__palette(a_dst), - wuffs_base__utility__make_pixel_format(self->private_impl.f_pixfmt), - wuffs_base__utility__empty_slice_u8(), - a_blend); - if ( ! wuffs_base__status__is_ok(&v_status)) { - status = v_status; - if (wuffs_base__status__is_error(&status)) { - goto exit; - } else if (wuffs_base__status__is_suspension(&status)) { - status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension); - goto exit; - } - goto ok; - } - while (true) { - v_status = wuffs_nie__decoder__swizzle(self, a_dst, a_src); - if (wuffs_base__status__is_ok(&v_status)) { - goto label__0__break; - } else if (v_status.repr != wuffs_nie__note__internal_note_short_read) { - status = v_status; - if (wuffs_base__status__is_error(&status)) { - goto exit; - } else if (wuffs_base__status__is_suspension(&status)) { - status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension); - goto exit; - } - goto ok; - } - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2); - } - label__0__break:; - self->private_impl.f_call_sequence = 96; - - ok: - self->private_impl.p_do_decode_frame[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_do_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - - goto exit; - exit: - return status; -} - -// -------- func nie.decoder.swizzle - -static wuffs_base__status -wuffs_nie__decoder__swizzle( - wuffs_nie__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - wuffs_base__pixel_format v_dst_pixfmt = {0}; - uint32_t v_dst_bits_per_pixel = 0; - uint32_t v_dst_bytes_per_pixel = 0; - uint64_t v_dst_bytes_per_row = 0; - uint32_t v_src_bytes_per_pixel = 0; - wuffs_base__table_u8 v_tab = {0}; - wuffs_base__slice_u8 v_dst = {0}; - uint64_t v_i = 0; - uint64_t v_j = 0; - uint64_t v_n = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst); - v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt); - if ((v_dst_bits_per_pixel & 7) != 0) { - status = wuffs_base__make_status(wuffs_base__error__unsupported_option); - goto exit; - } - v_dst_bytes_per_pixel = (v_dst_bits_per_pixel / 8); - v_dst_bytes_per_row = ((uint64_t)((self->private_impl.f_width * v_dst_bytes_per_pixel))); - v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0); - while (true) { - if (self->private_impl.f_dst_x == self->private_impl.f_width) { - self->private_impl.f_dst_x = 0; - self->private_impl.f_dst_y += 1; - if (self->private_impl.f_dst_y >= self->private_impl.f_height) { - goto label__0__break; - } - } - v_dst = wuffs_base__table_u8__row_u32(v_tab, self->private_impl.f_dst_y); - if (v_dst_bytes_per_row < ((uint64_t)(v_dst.len))) { - v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_bytes_per_row); - } - v_i = (((uint64_t)(self->private_impl.f_dst_x)) * ((uint64_t)(v_dst_bytes_per_pixel))); - if (v_i >= ((uint64_t)(v_dst.len))) { - v_src_bytes_per_pixel = 4; - if (self->private_impl.f_pixfmt == 2164308923) { - v_src_bytes_per_pixel = 8; - } - v_n = (((uint64_t)(io2_a_src - iop_a_src)) / ((uint64_t)(v_src_bytes_per_pixel))); - v_n = wuffs_base__u64__min(v_n, ((uint64_t)(((uint32_t)(self->private_impl.f_width - self->private_impl.f_dst_x))))); - v_j = v_n; - while (v_j >= 8) { - if (((uint64_t)(io2_a_src - iop_a_src)) >= ((uint64_t)((v_src_bytes_per_pixel * 8)))) { - iop_a_src += (v_src_bytes_per_pixel * 8); - } - v_j -= 8; - } - while (v_j > 0) { - if (((uint64_t)(io2_a_src - iop_a_src)) >= ((uint64_t)((v_src_bytes_per_pixel * 1)))) { - iop_a_src += (v_src_bytes_per_pixel * 1); - } - v_j -= 1; - } - } else { - v_n = wuffs_base__pixel_swizzler__swizzle_interleaved_from_reader( - &self->private_impl.f_swizzler, - wuffs_base__slice_u8__subslice_i(v_dst, v_i), - wuffs_base__pixel_buffer__palette(a_dst), - &iop_a_src, - io2_a_src); - } - if (v_n == 0) { - status = wuffs_base__make_status(wuffs_nie__note__internal_note_short_read); - goto ok; - } - wuffs_base__u32__sat_add_indirect(&self->private_impl.f_dst_x, ((uint32_t)((v_n & 4294967295)))); - } - label__0__break:; - status = wuffs_base__make_status(NULL); - goto ok; - - ok: - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func nie.decoder.frame_dirty_rect - -WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32 -wuffs_nie__decoder__frame_dirty_rect( - const wuffs_nie__decoder* self) { - if (!self) { - return wuffs_base__utility__empty_rect_ie_u32(); - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return wuffs_base__utility__empty_rect_ie_u32(); - } - - return wuffs_base__utility__make_rect_ie_u32( - 0, - 0, - self->private_impl.f_width, - self->private_impl.f_height); -} - -// -------- func nie.decoder.num_animation_loops - -WUFFS_BASE__MAYBE_STATIC uint32_t -wuffs_nie__decoder__num_animation_loops( - const wuffs_nie__decoder* self) { - if (!self) { - return 0; - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return 0; - } - - return 0; -} - -// -------- func nie.decoder.num_decoded_frame_configs - -WUFFS_BASE__MAYBE_STATIC uint64_t -wuffs_nie__decoder__num_decoded_frame_configs( - const wuffs_nie__decoder* self) { - if (!self) { - return 0; - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return 0; - } - - if (self->private_impl.f_call_sequence > 32) { - return 1; - } - return 0; -} - -// -------- func nie.decoder.num_decoded_frames - -WUFFS_BASE__MAYBE_STATIC uint64_t -wuffs_nie__decoder__num_decoded_frames( - const wuffs_nie__decoder* self) { - if (!self) { - return 0; - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return 0; - } - - if (self->private_impl.f_call_sequence > 64) { - return 1; - } - return 0; -} - -// -------- func nie.decoder.restart_frame - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_nie__decoder__restart_frame( - wuffs_nie__decoder* self, - uint64_t a_index, - uint64_t a_io_position) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - - if (self->private_impl.f_call_sequence < 32) { - return wuffs_base__make_status(wuffs_base__error__bad_call_sequence); - } - if ((a_index != 0) || (a_io_position != 16)) { - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - self->private_impl.f_call_sequence = 40; - return wuffs_base__make_status(NULL); -} - -// -------- func nie.decoder.set_report_metadata - -WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct -wuffs_nie__decoder__set_report_metadata( - wuffs_nie__decoder* self, - uint32_t a_fourcc, - bool a_report) { - return wuffs_base__make_empty_struct(); -} - -// -------- func nie.decoder.tell_me_more - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_nie__decoder__tell_me_more( - wuffs_nie__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__more_information* a_minfo, - wuffs_base__io_buffer* a_src) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - if (!a_dst || !a_src) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - if ((self->private_impl.active_coroutine != 0) && - (self->private_impl.active_coroutine != 4)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); - } - self->private_impl.active_coroutine = 0; - wuffs_base__status status = wuffs_base__make_status(NULL); - - status = wuffs_base__make_status(wuffs_base__error__no_more_information); - goto exit; - - goto ok; - ok: - goto exit; - exit: - if (wuffs_base__status__is_error(&status)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - } - return status; -} - -// -------- func nie.decoder.workbuf_len - -WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 -wuffs_nie__decoder__workbuf_len( - const wuffs_nie__decoder* self) { - if (!self) { - return wuffs_base__utility__empty_range_ii_u64(); - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return wuffs_base__utility__empty_range_ii_u64(); - } - - return wuffs_base__utility__make_range_ii_u64(0, 0); -} - -#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NIE) - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__ZLIB) - -// ---------------- Status Codes Implementations - -const char wuffs_zlib__note__dictionary_required[] = "@zlib: dictionary required"; -const char wuffs_zlib__error__bad_checksum[] = "#zlib: bad checksum"; -const char wuffs_zlib__error__bad_compression_method[] = "#zlib: bad compression method"; -const char wuffs_zlib__error__bad_compression_window_size[] = "#zlib: bad compression window size"; -const char wuffs_zlib__error__bad_parity_check[] = "#zlib: bad parity check"; -const char wuffs_zlib__error__incorrect_dictionary[] = "#zlib: incorrect dictionary"; -const char wuffs_zlib__error__truncated_input[] = "#zlib: truncated input"; - -// ---------------- Private Consts - -#define WUFFS_ZLIB__QUIRKS_BASE 2113790976 - -#define WUFFS_ZLIB__QUIRKS_COUNT 1 - -// ---------------- Private Initializer Prototypes - -// ---------------- Private Function Prototypes - -static wuffs_base__status -wuffs_zlib__decoder__do_transform_io( - wuffs_zlib__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__slice_u8 a_workbuf); - -// ---------------- VTables - -const wuffs_base__io_transformer__func_ptrs -wuffs_zlib__decoder__func_ptrs_for__wuffs_base__io_transformer = { - (wuffs_base__status(*)(void*, - uint32_t, - uint64_t))(&wuffs_zlib__decoder__set_quirk), - (wuffs_base__status(*)(void*, - wuffs_base__io_buffer*, - wuffs_base__io_buffer*, - wuffs_base__slice_u8))(&wuffs_zlib__decoder__transform_io), - (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_zlib__decoder__workbuf_len), -}; - -// ---------------- Initializer Implementations - -wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT -wuffs_zlib__decoder__initialize( - wuffs_zlib__decoder* self, - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options){ - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (sizeof(*self) != sizeof_star_self) { - return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver); - } - if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) || - (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) { - return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version); - } - - if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) { - // The whole point of this if-check is to detect an uninitialized *self. - // We disable the warning on GCC. Clang-5.0 does not have this warning. -#if !defined(__clang__) && defined(__GNUC__) -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wmaybe-uninitialized" -#endif - if (self->private_impl.magic != 0) { - return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed); - } -#if !defined(__clang__) && defined(__GNUC__) -#pragma GCC diagnostic pop -#endif - } else { - if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) { - memset(self, 0, sizeof(*self)); - options |= WUFFS_INITIALIZE__ALREADY_ZEROED; - } else { - memset(&(self->private_impl), 0, sizeof(self->private_impl)); - } - } - - { - wuffs_base__status z = wuffs_adler32__hasher__initialize( - &self->private_data.f_checksum, sizeof(self->private_data.f_checksum), WUFFS_VERSION, options); - if (z.repr) { - return z; - } - } - { - wuffs_base__status z = wuffs_adler32__hasher__initialize( - &self->private_data.f_dict_id_hasher, sizeof(self->private_data.f_dict_id_hasher), WUFFS_VERSION, options); - if (z.repr) { - return z; - } - } - { - wuffs_base__status z = wuffs_deflate__decoder__initialize( - &self->private_data.f_flate, sizeof(self->private_data.f_flate), WUFFS_VERSION, options); - if (z.repr) { - return z; - } - } - self->private_impl.magic = WUFFS_BASE__MAGIC; - self->private_impl.vtable_for__wuffs_base__io_transformer.vtable_name = - wuffs_base__io_transformer__vtable_name; - self->private_impl.vtable_for__wuffs_base__io_transformer.function_pointers = - (const void*)(&wuffs_zlib__decoder__func_ptrs_for__wuffs_base__io_transformer); - return wuffs_base__make_status(NULL); -} - -wuffs_zlib__decoder* -wuffs_zlib__decoder__alloc() { - wuffs_zlib__decoder* x = - (wuffs_zlib__decoder*)(calloc(sizeof(wuffs_zlib__decoder), 1)); - if (!x) { - return NULL; - } - if (wuffs_zlib__decoder__initialize( - x, sizeof(wuffs_zlib__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) { - free(x); - return NULL; - } - return x; -} - -size_t -sizeof__wuffs_zlib__decoder() { - return sizeof(wuffs_zlib__decoder); -} - -// ---------------- Function Implementations - -// -------- func zlib.decoder.dictionary_id - -WUFFS_BASE__MAYBE_STATIC uint32_t -wuffs_zlib__decoder__dictionary_id( - const wuffs_zlib__decoder* self) { - if (!self) { - return 0; - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return 0; - } - - return self->private_impl.f_dict_id_want; -} - -// -------- func zlib.decoder.add_dictionary - -WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct -wuffs_zlib__decoder__add_dictionary( - wuffs_zlib__decoder* self, - wuffs_base__slice_u8 a_dict) { - if (!self) { - return wuffs_base__make_empty_struct(); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_empty_struct(); - } - - if (self->private_impl.f_header_complete) { - self->private_impl.f_bad_call_sequence = true; - } else { - self->private_impl.f_dict_id_got = wuffs_adler32__hasher__update_u32(&self->private_data.f_dict_id_hasher, a_dict); - wuffs_deflate__decoder__add_history(&self->private_data.f_flate, a_dict); - } - self->private_impl.f_got_dictionary = true; - return wuffs_base__make_empty_struct(); -} - -// -------- func zlib.decoder.set_quirk - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_zlib__decoder__set_quirk( - wuffs_zlib__decoder* self, - uint32_t a_key, - uint64_t a_value) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - - if (self->private_impl.f_header_complete) { - self->private_impl.f_bad_call_sequence = true; - return wuffs_base__make_status(wuffs_base__error__bad_call_sequence); - } else if (a_key == 1) { - self->private_impl.f_ignore_checksum = (a_value > 0); - return wuffs_base__make_status(NULL); - } else if (a_key >= 2113790976) { - a_key -= 2113790976; - if (a_key < 1) { - self->private_impl.f_quirks[a_key] = (a_value > 0); - return wuffs_base__make_status(NULL); - } - } - return wuffs_base__make_status(wuffs_base__error__unsupported_option); -} - -// -------- func zlib.decoder.workbuf_len - -WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 -wuffs_zlib__decoder__workbuf_len( - const wuffs_zlib__decoder* self) { - if (!self) { - return wuffs_base__utility__empty_range_ii_u64(); - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return wuffs_base__utility__empty_range_ii_u64(); - } - - return wuffs_base__utility__make_range_ii_u64(1, 1); -} - -// -------- func zlib.decoder.transform_io - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_zlib__decoder__transform_io( - wuffs_zlib__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__slice_u8 a_workbuf) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - if (!a_dst || !a_src) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - if ((self->private_impl.active_coroutine != 0) && - (self->private_impl.active_coroutine != 1)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); - } - self->private_impl.active_coroutine = 0; - wuffs_base__status status = wuffs_base__make_status(NULL); - - wuffs_base__status v_status = wuffs_base__make_status(NULL); - - uint32_t coro_susp_point = self->private_impl.p_transform_io[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - while (true) { - { - wuffs_base__status t_0 = wuffs_zlib__decoder__do_transform_io(self, a_dst, a_src, a_workbuf); - v_status = t_0; - } - if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { - status = wuffs_base__make_status(wuffs_zlib__error__truncated_input); - goto exit; - } - status = v_status; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); - } - - ok: - self->private_impl.p_transform_io[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_transform_io[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0; - - goto exit; - exit: - if (wuffs_base__status__is_error(&status)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - } - return status; -} - -// -------- func zlib.decoder.do_transform_io - -static wuffs_base__status -wuffs_zlib__decoder__do_transform_io( - wuffs_zlib__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__slice_u8 a_workbuf) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint16_t v_x = 0; - uint32_t v_checksum_got = 0; - wuffs_base__status v_status = wuffs_base__make_status(NULL); - uint32_t v_checksum_want = 0; - uint64_t v_mark = 0; - - uint8_t* iop_a_dst = NULL; - uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_dst && a_dst->data.ptr) { - io0_a_dst = a_dst->data.ptr; - io1_a_dst = io0_a_dst + a_dst->meta.wi; - iop_a_dst = io1_a_dst; - io2_a_dst = io0_a_dst + a_dst->data.len; - if (a_dst->meta.closed) { - io2_a_dst = iop_a_dst; - } - } - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_do_transform_io[0]; - if (coro_susp_point) { - v_checksum_got = self->private_data.s_do_transform_io[0].v_checksum_got; - } - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - if (self->private_impl.f_bad_call_sequence) { - status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence); - goto exit; - } else if (self->private_impl.f_quirks[0]) { - } else if ( ! self->private_impl.f_want_dictionary) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - uint16_t t_0; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { - t_0 = wuffs_base__peek_u16be__no_bounds_check(iop_a_src); - iop_a_src += 2; - } else { - self->private_data.s_do_transform_io[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_do_transform_io[0].scratch; - uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFF)); - *scratch >>= 8; - *scratch <<= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0); - if (num_bits_0 == 8) { - t_0 = ((uint16_t)(*scratch >> 48)); - break; - } - num_bits_0 += 8; - *scratch |= ((uint64_t)(num_bits_0)); - } - } - v_x = t_0; - } - if (((v_x >> 8) & 15) != 8) { - status = wuffs_base__make_status(wuffs_zlib__error__bad_compression_method); - goto exit; - } - if ((v_x >> 12) > 7) { - status = wuffs_base__make_status(wuffs_zlib__error__bad_compression_window_size); - goto exit; - } - if ((v_x % 31) != 0) { - status = wuffs_base__make_status(wuffs_zlib__error__bad_parity_check); - goto exit; - } - self->private_impl.f_want_dictionary = ((v_x & 32) != 0); - if (self->private_impl.f_want_dictionary) { - self->private_impl.f_dict_id_got = 1; - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); - uint32_t t_1; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_1 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); - iop_a_src += 4; - } else { - self->private_data.s_do_transform_io[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_do_transform_io[0].scratch; - uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFF)); - *scratch >>= 8; - *scratch <<= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1); - if (num_bits_1 == 24) { - t_1 = ((uint32_t)(*scratch >> 32)); - break; - } - num_bits_1 += 8; - *scratch |= ((uint64_t)(num_bits_1)); - } - } - self->private_impl.f_dict_id_want = t_1; - } - status = wuffs_base__make_status(wuffs_zlib__note__dictionary_required); - goto ok; - } else if (self->private_impl.f_got_dictionary) { - status = wuffs_base__make_status(wuffs_zlib__error__incorrect_dictionary); - goto exit; - } - } else if (self->private_impl.f_dict_id_got != self->private_impl.f_dict_id_want) { - if (self->private_impl.f_got_dictionary) { - status = wuffs_base__make_status(wuffs_zlib__error__incorrect_dictionary); - goto exit; - } - status = wuffs_base__make_status(wuffs_zlib__note__dictionary_required); - goto ok; - } - self->private_impl.f_header_complete = true; - while (true) { - v_mark = ((uint64_t)(iop_a_dst - io0_a_dst)); - { - if (a_dst) { - a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); - } - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - wuffs_base__status t_2 = wuffs_deflate__decoder__transform_io(&self->private_data.f_flate, a_dst, a_src, a_workbuf); - v_status = t_2; - if (a_dst) { - iop_a_dst = a_dst->data.ptr + a_dst->meta.wi; - } - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - } - if ( ! self->private_impl.f_ignore_checksum && ! self->private_impl.f_quirks[0]) { - v_checksum_got = wuffs_adler32__hasher__update_u32(&self->private_data.f_checksum, wuffs_base__io__since(v_mark, ((uint64_t)(iop_a_dst - io0_a_dst)), io0_a_dst)); - } - if (wuffs_base__status__is_ok(&v_status)) { - goto label__0__break; - } - status = v_status; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5); - } - label__0__break:; - if ( ! self->private_impl.f_quirks[0]) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); - uint32_t t_3; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_3 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); - iop_a_src += 4; - } else { - self->private_data.s_do_transform_io[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_do_transform_io[0].scratch; - uint32_t num_bits_3 = ((uint32_t)(*scratch & 0xFF)); - *scratch >>= 8; - *scratch <<= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_3); - if (num_bits_3 == 24) { - t_3 = ((uint32_t)(*scratch >> 32)); - break; - } - num_bits_3 += 8; - *scratch |= ((uint64_t)(num_bits_3)); - } - } - v_checksum_want = t_3; - } - if ( ! self->private_impl.f_ignore_checksum && (v_checksum_got != v_checksum_want)) { - status = wuffs_base__make_status(wuffs_zlib__error__bad_checksum); - goto exit; - } - } - - ok: - self->private_impl.p_do_transform_io[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_do_transform_io[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_data.s_do_transform_io[0].v_checksum_got = v_checksum_got; - - goto exit; - exit: - if (a_dst && a_dst->data.ptr) { - a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); - } - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__ZLIB) - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__PNG) - -// ---------------- Status Codes Implementations - -const char wuffs_png__error__bad_animation_sequence_number[] = "#png: bad animation sequence number"; -const char wuffs_png__error__bad_checksum[] = "#png: bad checksum"; -const char wuffs_png__error__bad_chunk[] = "#png: bad chunk"; -const char wuffs_png__error__bad_filter[] = "#png: bad filter"; -const char wuffs_png__error__bad_header[] = "#png: bad header"; -const char wuffs_png__error__bad_text_chunk_not_latin_1[] = "#png: bad text chunk (not Latin-1)"; -const char wuffs_png__error__missing_palette[] = "#png: missing palette"; -const char wuffs_png__error__truncated_input[] = "#png: truncated input"; -const char wuffs_png__error__unsupported_cgbi_extension[] = "#png: unsupported CgBI extension"; -const char wuffs_png__error__unsupported_png_compression_method[] = "#png: unsupported PNG compression method"; -const char wuffs_png__error__unsupported_png_file[] = "#png: unsupported PNG file"; -const char wuffs_png__error__internal_error_inconsistent_i_o[] = "#png: internal error: inconsistent I/O"; -const char wuffs_png__error__internal_error_inconsistent_chunk_type[] = "#png: internal error: inconsistent chunk type"; -const char wuffs_png__error__internal_error_inconsistent_frame_bounds[] = "#png: internal error: inconsistent frame bounds"; -const char wuffs_png__error__internal_error_inconsistent_workbuf_length[] = "#png: internal error: inconsistent workbuf length"; -const char wuffs_png__error__internal_error_zlib_decoder_did_not_exhaust_its_input[] = "#png: internal error: zlib decoder did not exhaust its input"; - -// ---------------- Private Consts - -#define WUFFS_PNG__ANCILLARY_BIT 32 - -static const uint8_t -WUFFS_PNG__INTERLACING[8][6] WUFFS_BASE__POTENTIALLY_UNUSED = { - { - 0, 0, 0, 0, 0, 0, - }, { - 3, 7, 0, 3, 7, 0, - }, { - 3, 3, 4, 3, 7, 0, - }, { - 2, 3, 0, 3, 3, 4, - }, { - 2, 1, 2, 2, 3, 0, - }, { - 1, 1, 0, 2, 1, 2, - }, { - 1, 0, 1, 1, 1, 0, - }, { - 0, 0, 0, 1, 0, 1, - }, -}; - -static const uint8_t -WUFFS_PNG__LOW_BIT_DEPTH_MULTIPLIERS[8] WUFFS_BASE__POTENTIALLY_UNUSED = { - 0, 255, 85, 0, 17, 0, 0, 0, -}; - -static const uint8_t -WUFFS_PNG__LOW_BIT_DEPTH_NUM_PACKS[8] WUFFS_BASE__POTENTIALLY_UNUSED = { - 0, 8, 4, 0, 2, 0, 0, 0, -}; - -static const uint8_t -WUFFS_PNG__NUM_CHANNELS[8] WUFFS_BASE__POTENTIALLY_UNUSED = { - 1, 0, 3, 1, 2, 0, 4, 0, -}; - -static const uint16_t -WUFFS_PNG__LATIN_1[256] WUFFS_BASE__POTENTIALLY_UNUSED = { - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 32, 33, 34, 35, 36, 37, 38, 39, - 40, 41, 42, 43, 44, 45, 46, 47, - 48, 49, 50, 51, 52, 53, 54, 55, - 56, 57, 58, 59, 60, 61, 62, 63, - 64, 65, 66, 67, 68, 69, 70, 71, - 72, 73, 74, 75, 76, 77, 78, 79, - 80, 81, 82, 83, 84, 85, 86, 87, - 88, 89, 90, 91, 92, 93, 94, 95, - 96, 97, 98, 99, 100, 101, 102, 103, - 104, 105, 106, 107, 108, 109, 110, 111, - 112, 113, 114, 115, 116, 117, 118, 119, - 120, 121, 122, 123, 124, 125, 126, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 41410, 41666, 41922, 42178, 42434, 42690, 42946, - 43202, 43458, 43714, 43970, 44226, 44482, 44738, 44994, - 45250, 45506, 45762, 46018, 46274, 46530, 46786, 47042, - 47298, 47554, 47810, 48066, 48322, 48578, 48834, 49090, - 32963, 33219, 33475, 33731, 33987, 34243, 34499, 34755, - 35011, 35267, 35523, 35779, 36035, 36291, 36547, 36803, - 37059, 37315, 37571, 37827, 38083, 38339, 38595, 38851, - 39107, 39363, 39619, 39875, 40131, 40387, 40643, 40899, - 41155, 41411, 41667, 41923, 42179, 42435, 42691, 42947, - 43203, 43459, 43715, 43971, 44227, 44483, 44739, 44995, - 45251, 45507, 45763, 46019, 46275, 46531, 46787, 47043, - 47299, 47555, 47811, 48067, 48323, 48579, 48835, 49091, -}; - -// ---------------- Private Initializer Prototypes - -// ---------------- Private Function Prototypes - -#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) -static wuffs_base__empty_struct -wuffs_png__decoder__filter_1_distance_4_arm_neon( - wuffs_png__decoder* self, - wuffs_base__slice_u8 a_curr); -#endif // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) - -#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) -static wuffs_base__empty_struct -wuffs_png__decoder__filter_3_distance_4_arm_neon( - wuffs_png__decoder* self, - wuffs_base__slice_u8 a_curr, - wuffs_base__slice_u8 a_prev); -#endif // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) - -#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) -static wuffs_base__empty_struct -wuffs_png__decoder__filter_4_distance_3_arm_neon( - wuffs_png__decoder* self, - wuffs_base__slice_u8 a_curr, - wuffs_base__slice_u8 a_prev); -#endif // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) - -#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) -static wuffs_base__empty_struct -wuffs_png__decoder__filter_4_distance_4_arm_neon( - wuffs_png__decoder* self, - wuffs_base__slice_u8 a_curr, - wuffs_base__slice_u8 a_prev); -#endif // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) - -static wuffs_base__empty_struct -wuffs_png__decoder__filter_1( - wuffs_png__decoder* self, - wuffs_base__slice_u8 a_curr); - -static wuffs_base__empty_struct -wuffs_png__decoder__filter_1__choosy_default( - wuffs_png__decoder* self, - wuffs_base__slice_u8 a_curr); - -static wuffs_base__empty_struct -wuffs_png__decoder__filter_1_distance_3_fallback( - wuffs_png__decoder* self, - wuffs_base__slice_u8 a_curr); - -static wuffs_base__empty_struct -wuffs_png__decoder__filter_1_distance_4_fallback( - wuffs_png__decoder* self, - wuffs_base__slice_u8 a_curr); - -static wuffs_base__empty_struct -wuffs_png__decoder__filter_2( - wuffs_png__decoder* self, - wuffs_base__slice_u8 a_curr, - wuffs_base__slice_u8 a_prev); - -static wuffs_base__empty_struct -wuffs_png__decoder__filter_3( - wuffs_png__decoder* self, - wuffs_base__slice_u8 a_curr, - wuffs_base__slice_u8 a_prev); - -static wuffs_base__empty_struct -wuffs_png__decoder__filter_3__choosy_default( - wuffs_png__decoder* self, - wuffs_base__slice_u8 a_curr, - wuffs_base__slice_u8 a_prev); - -static wuffs_base__empty_struct -wuffs_png__decoder__filter_3_distance_3_fallback( - wuffs_png__decoder* self, - wuffs_base__slice_u8 a_curr, - wuffs_base__slice_u8 a_prev); - -static wuffs_base__empty_struct -wuffs_png__decoder__filter_3_distance_4_fallback( - wuffs_png__decoder* self, - wuffs_base__slice_u8 a_curr, - wuffs_base__slice_u8 a_prev); - -static wuffs_base__empty_struct -wuffs_png__decoder__filter_4( - wuffs_png__decoder* self, - wuffs_base__slice_u8 a_curr, - wuffs_base__slice_u8 a_prev); - -static wuffs_base__empty_struct -wuffs_png__decoder__filter_4__choosy_default( - wuffs_png__decoder* self, - wuffs_base__slice_u8 a_curr, - wuffs_base__slice_u8 a_prev); - -static wuffs_base__empty_struct -wuffs_png__decoder__filter_4_distance_3_fallback( - wuffs_png__decoder* self, - wuffs_base__slice_u8 a_curr, - wuffs_base__slice_u8 a_prev); - -static wuffs_base__empty_struct -wuffs_png__decoder__filter_4_distance_4_fallback( - wuffs_png__decoder* self, - wuffs_base__slice_u8 a_curr, - wuffs_base__slice_u8 a_prev); - -#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) -static wuffs_base__empty_struct -wuffs_png__decoder__filter_1_distance_4_x86_sse42( - wuffs_png__decoder* self, - wuffs_base__slice_u8 a_curr); -#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) - -#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) -static wuffs_base__empty_struct -wuffs_png__decoder__filter_3_distance_4_x86_sse42( - wuffs_png__decoder* self, - wuffs_base__slice_u8 a_curr, - wuffs_base__slice_u8 a_prev); -#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) - -#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) -static wuffs_base__empty_struct -wuffs_png__decoder__filter_4_distance_3_x86_sse42( - wuffs_png__decoder* self, - wuffs_base__slice_u8 a_curr, - wuffs_base__slice_u8 a_prev); -#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) - -#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) -static wuffs_base__empty_struct -wuffs_png__decoder__filter_4_distance_4_x86_sse42( - wuffs_png__decoder* self, - wuffs_base__slice_u8 a_curr, - wuffs_base__slice_u8 a_prev); -#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) - -static wuffs_base__status -wuffs_png__decoder__do_decode_image_config( - wuffs_png__decoder* self, - wuffs_base__image_config* a_dst, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_png__decoder__decode_ihdr( - wuffs_png__decoder* self, - wuffs_base__io_buffer* a_src); - -static wuffs_base__empty_struct -wuffs_png__decoder__assign_filter_distance( - wuffs_png__decoder* self); - -static uint64_t -wuffs_png__decoder__calculate_bytes_per_row( - const wuffs_png__decoder* self, - uint32_t a_width); - -static wuffs_base__empty_struct -wuffs_png__decoder__choose_filter_implementations( - wuffs_png__decoder* self); - -static wuffs_base__status -wuffs_png__decoder__decode_other_chunk( - wuffs_png__decoder* self, - wuffs_base__io_buffer* a_src, - bool a_framy); - -static wuffs_base__status -wuffs_png__decoder__decode_actl( - wuffs_png__decoder* self, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_png__decoder__decode_chrm( - wuffs_png__decoder* self, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_png__decoder__decode_exif( - wuffs_png__decoder* self, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_png__decoder__decode_fctl( - wuffs_png__decoder* self, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_png__decoder__decode_gama( - wuffs_png__decoder* self, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_png__decoder__decode_iccp( - wuffs_png__decoder* self, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_png__decoder__decode_plte( - wuffs_png__decoder* self, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_png__decoder__decode_srgb( - wuffs_png__decoder* self, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_png__decoder__decode_trns( - wuffs_png__decoder* self, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_png__decoder__do_decode_frame_config( - wuffs_png__decoder* self, - wuffs_base__frame_config* a_dst, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_png__decoder__skip_frame( - wuffs_png__decoder* self, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_png__decoder__do_decode_frame( - wuffs_png__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__pixel_blend a_blend, - wuffs_base__slice_u8 a_workbuf, - wuffs_base__decode_frame_options* a_opts); - -static wuffs_base__status -wuffs_png__decoder__decode_pass( - wuffs_png__decoder* self, - wuffs_base__io_buffer* a_src, - wuffs_base__slice_u8 a_workbuf); - -static wuffs_base__status -wuffs_png__decoder__do_tell_me_more( - wuffs_png__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__more_information* a_minfo, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_png__decoder__filter_and_swizzle( - wuffs_png__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__slice_u8 a_workbuf); - -static wuffs_base__status -wuffs_png__decoder__filter_and_swizzle__choosy_default( - wuffs_png__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__slice_u8 a_workbuf); - -static wuffs_base__status -wuffs_png__decoder__filter_and_swizzle_tricky( - wuffs_png__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__slice_u8 a_workbuf); - -// ---------------- VTables - -const wuffs_base__image_decoder__func_ptrs -wuffs_png__decoder__func_ptrs_for__wuffs_base__image_decoder = { - (wuffs_base__status(*)(void*, - wuffs_base__pixel_buffer*, - wuffs_base__io_buffer*, - wuffs_base__pixel_blend, - wuffs_base__slice_u8, - wuffs_base__decode_frame_options*))(&wuffs_png__decoder__decode_frame), - (wuffs_base__status(*)(void*, - wuffs_base__frame_config*, - wuffs_base__io_buffer*))(&wuffs_png__decoder__decode_frame_config), - (wuffs_base__status(*)(void*, - wuffs_base__image_config*, - wuffs_base__io_buffer*))(&wuffs_png__decoder__decode_image_config), - (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_png__decoder__frame_dirty_rect), - (uint32_t(*)(const void*))(&wuffs_png__decoder__num_animation_loops), - (uint64_t(*)(const void*))(&wuffs_png__decoder__num_decoded_frame_configs), - (uint64_t(*)(const void*))(&wuffs_png__decoder__num_decoded_frames), - (wuffs_base__status(*)(void*, - uint64_t, - uint64_t))(&wuffs_png__decoder__restart_frame), - (wuffs_base__status(*)(void*, - uint32_t, - uint64_t))(&wuffs_png__decoder__set_quirk), - (wuffs_base__empty_struct(*)(void*, - uint32_t, - bool))(&wuffs_png__decoder__set_report_metadata), - (wuffs_base__status(*)(void*, - wuffs_base__io_buffer*, - wuffs_base__more_information*, - wuffs_base__io_buffer*))(&wuffs_png__decoder__tell_me_more), - (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_png__decoder__workbuf_len), -}; - -// ---------------- Initializer Implementations - -wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT -wuffs_png__decoder__initialize( - wuffs_png__decoder* self, - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options){ - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (sizeof(*self) != sizeof_star_self) { - return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver); - } - if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) || - (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) { - return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version); - } - - if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) { - // The whole point of this if-check is to detect an uninitialized *self. - // We disable the warning on GCC. Clang-5.0 does not have this warning. -#if !defined(__clang__) && defined(__GNUC__) -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wmaybe-uninitialized" -#endif - if (self->private_impl.magic != 0) { - return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed); - } -#if !defined(__clang__) && defined(__GNUC__) -#pragma GCC diagnostic pop -#endif - } else { - if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) { - memset(self, 0, sizeof(*self)); - options |= WUFFS_INITIALIZE__ALREADY_ZEROED; - } else { - memset(&(self->private_impl), 0, sizeof(self->private_impl)); - } - } - - self->private_impl.choosy_filter_1 = &wuffs_png__decoder__filter_1__choosy_default; - self->private_impl.choosy_filter_3 = &wuffs_png__decoder__filter_3__choosy_default; - self->private_impl.choosy_filter_4 = &wuffs_png__decoder__filter_4__choosy_default; - self->private_impl.choosy_filter_and_swizzle = &wuffs_png__decoder__filter_and_swizzle__choosy_default; - - { - wuffs_base__status z = wuffs_crc32__ieee_hasher__initialize( - &self->private_data.f_crc32, sizeof(self->private_data.f_crc32), WUFFS_VERSION, options); - if (z.repr) { - return z; - } - } - { - wuffs_base__status z = wuffs_zlib__decoder__initialize( - &self->private_data.f_zlib, sizeof(self->private_data.f_zlib), WUFFS_VERSION, options); - if (z.repr) { - return z; - } - } - self->private_impl.magic = WUFFS_BASE__MAGIC; - self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name = - wuffs_base__image_decoder__vtable_name; - self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers = - (const void*)(&wuffs_png__decoder__func_ptrs_for__wuffs_base__image_decoder); - return wuffs_base__make_status(NULL); -} - -wuffs_png__decoder* -wuffs_png__decoder__alloc() { - wuffs_png__decoder* x = - (wuffs_png__decoder*)(calloc(sizeof(wuffs_png__decoder), 1)); - if (!x) { - return NULL; - } - if (wuffs_png__decoder__initialize( - x, sizeof(wuffs_png__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) { - free(x); - return NULL; - } - return x; -} - -size_t -sizeof__wuffs_png__decoder() { - return sizeof(wuffs_png__decoder); -} - -// ---------------- Function Implementations - -// ‼ WUFFS MULTI-FILE SECTION +arm_neon -// -------- func png.decoder.filter_1_distance_4_arm_neon - -#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) -static wuffs_base__empty_struct -wuffs_png__decoder__filter_1_distance_4_arm_neon( - wuffs_png__decoder* self, - wuffs_base__slice_u8 a_curr) { - wuffs_base__slice_u8 v_curr = {0}; - uint8x8_t v_fa = {0}; - uint8x8_t v_fx = {0}; - - { - wuffs_base__slice_u8 i_slice_curr = a_curr; - v_curr.ptr = i_slice_curr.ptr; - v_curr.len = 4; - uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8); - while (v_curr.ptr < i_end0_curr) { - v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); - v_fx = vadd_u8(v_fx, v_fa); - wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0)); - v_fa = v_fx; - v_curr.ptr += 4; - v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); - v_fx = vadd_u8(v_fx, v_fa); - wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0)); - v_fa = v_fx; - v_curr.ptr += 4; - } - v_curr.len = 4; - uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4); - while (v_curr.ptr < i_end1_curr) { - v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); - v_fx = vadd_u8(v_fx, v_fa); - wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0)); - v_fa = v_fx; - v_curr.ptr += 4; - } - v_curr.len = 0; - } - return wuffs_base__make_empty_struct(); -} -#endif // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) -// ‼ WUFFS MULTI-FILE SECTION -arm_neon - -// ‼ WUFFS MULTI-FILE SECTION +arm_neon -// -------- func png.decoder.filter_3_distance_4_arm_neon - -#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) -static wuffs_base__empty_struct -wuffs_png__decoder__filter_3_distance_4_arm_neon( - wuffs_png__decoder* self, - wuffs_base__slice_u8 a_curr, - wuffs_base__slice_u8 a_prev) { - wuffs_base__slice_u8 v_curr = {0}; - wuffs_base__slice_u8 v_prev = {0}; - uint8x8_t v_fa = {0}; - uint8x8_t v_fb = {0}; - uint8x8_t v_fx = {0}; - - if (((uint64_t)(a_prev.len)) == 0) { - { - wuffs_base__slice_u8 i_slice_curr = a_curr; - v_curr.ptr = i_slice_curr.ptr; - v_curr.len = 4; - uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8); - while (v_curr.ptr < i_end0_curr) { - v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); - v_fx = vadd_u8(v_fx, vhadd_u8(v_fa, v_fb)); - wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0)); - v_fa = v_fx; - v_curr.ptr += 4; - v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); - v_fx = vadd_u8(v_fx, vhadd_u8(v_fa, v_fb)); - wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0)); - v_fa = v_fx; - v_curr.ptr += 4; - } - v_curr.len = 4; - uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4); - while (v_curr.ptr < i_end1_curr) { - v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); - v_fx = vadd_u8(v_fx, vhadd_u8(v_fa, v_fb)); - wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0)); - v_fa = v_fx; - v_curr.ptr += 4; - } - v_curr.len = 0; - } - } else { - { - wuffs_base__slice_u8 i_slice_curr = a_curr; - v_curr.ptr = i_slice_curr.ptr; - wuffs_base__slice_u8 i_slice_prev = a_prev; - v_prev.ptr = i_slice_prev.ptr; - i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len))); - v_curr.len = 4; - v_prev.len = 4; - uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8); - while (v_curr.ptr < i_end0_curr) { - v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr))); - v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); - v_fx = vadd_u8(v_fx, vhadd_u8(v_fa, v_fb)); - wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0)); - v_fa = v_fx; - v_curr.ptr += 4; - v_prev.ptr += 4; - v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr))); - v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); - v_fx = vadd_u8(v_fx, vhadd_u8(v_fa, v_fb)); - wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0)); - v_fa = v_fx; - v_curr.ptr += 4; - v_prev.ptr += 4; - } - v_curr.len = 4; - v_prev.len = 4; - uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4); - while (v_curr.ptr < i_end1_curr) { - v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr))); - v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); - v_fx = vadd_u8(v_fx, vhadd_u8(v_fa, v_fb)); - wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0)); - v_fa = v_fx; - v_curr.ptr += 4; - v_prev.ptr += 4; - } - v_curr.len = 0; - v_prev.len = 0; - } - } - return wuffs_base__make_empty_struct(); -} -#endif // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) -// ‼ WUFFS MULTI-FILE SECTION -arm_neon - -// ‼ WUFFS MULTI-FILE SECTION +arm_neon -// -------- func png.decoder.filter_4_distance_3_arm_neon - -#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) -static wuffs_base__empty_struct -wuffs_png__decoder__filter_4_distance_3_arm_neon( - wuffs_png__decoder* self, - wuffs_base__slice_u8 a_curr, - wuffs_base__slice_u8 a_prev) { - wuffs_base__slice_u8 v_curr = {0}; - wuffs_base__slice_u8 v_prev = {0}; - uint8x8_t v_fa = {0}; - uint8x8_t v_fb = {0}; - uint8x8_t v_fc = {0}; - uint8x8_t v_fx = {0}; - uint16x8_t v_fafb = {0}; - uint16x8_t v_fcfc = {0}; - uint16x8_t v_pa = {0}; - uint16x8_t v_pb = {0}; - uint16x8_t v_pc = {0}; - uint16x8_t v_cmpab = {0}; - uint16x8_t v_cmpac = {0}; - uint8x8_t v_picka = {0}; - uint8x8_t v_pickb = {0}; - - { - wuffs_base__slice_u8 i_slice_curr = a_curr; - v_curr.ptr = i_slice_curr.ptr; - wuffs_base__slice_u8 i_slice_prev = a_prev; - v_prev.ptr = i_slice_prev.ptr; - i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len))); - v_curr.len = 4; - v_prev.len = 4; - uint8_t* i_end0_curr = v_curr.ptr + wuffs_base__iterate_total_advance((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)), 7, 6); - while (v_curr.ptr < i_end0_curr) { - v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr))); - v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); - v_fafb = vaddl_u8(v_fa, v_fb); - v_fcfc = vaddl_u8(v_fc, v_fc); - v_pa = vabdl_u8(v_fb, v_fc); - v_pb = vabdl_u8(v_fa, v_fc); - v_pc = vabdq_u16(v_fafb, v_fcfc); - v_cmpab = vcleq_u16(v_pa, v_pb); - v_cmpac = vcleq_u16(v_pa, v_pc); - v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac)); - v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc)); - v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc))); - wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0)); - v_fc = v_fb; - v_fa = v_fx; - v_curr.ptr += 3; - v_prev.ptr += 3; - v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr))); - v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); - v_fafb = vaddl_u8(v_fa, v_fb); - v_fcfc = vaddl_u8(v_fc, v_fc); - v_pa = vabdl_u8(v_fb, v_fc); - v_pb = vabdl_u8(v_fa, v_fc); - v_pc = vabdq_u16(v_fafb, v_fcfc); - v_cmpab = vcleq_u16(v_pa, v_pb); - v_cmpac = vcleq_u16(v_pa, v_pc); - v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac)); - v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc)); - v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc))); - wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0)); - v_fc = v_fb; - v_fa = v_fx; - v_curr.ptr += 3; - v_prev.ptr += 3; - } - v_curr.len = 4; - v_prev.len = 4; - uint8_t* i_end1_curr = v_curr.ptr + wuffs_base__iterate_total_advance((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)), 4, 3); - while (v_curr.ptr < i_end1_curr) { - v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr))); - v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); - v_fafb = vaddl_u8(v_fa, v_fb); - v_fcfc = vaddl_u8(v_fc, v_fc); - v_pa = vabdl_u8(v_fb, v_fc); - v_pb = vabdl_u8(v_fa, v_fc); - v_pc = vabdq_u16(v_fafb, v_fcfc); - v_cmpab = vcleq_u16(v_pa, v_pb); - v_cmpac = vcleq_u16(v_pa, v_pc); - v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac)); - v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc)); - v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc))); - wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0)); - v_fc = v_fb; - v_fa = v_fx; - v_curr.ptr += 3; - v_prev.ptr += 3; - } - v_curr.len = 3; - v_prev.len = 3; - uint8_t* i_end2_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 3) * 3); - while (v_curr.ptr < i_end2_curr) { - v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u24le__no_bounds_check(v_prev.ptr))); - v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u24le__no_bounds_check(v_curr.ptr))); - v_fafb = vaddl_u8(v_fa, v_fb); - v_fcfc = vaddl_u8(v_fc, v_fc); - v_pa = vabdl_u8(v_fb, v_fc); - v_pb = vabdl_u8(v_fa, v_fc); - v_pc = vabdq_u16(v_fafb, v_fcfc); - v_cmpab = vcleq_u16(v_pa, v_pb); - v_cmpac = vcleq_u16(v_pa, v_pc); - v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac)); - v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc)); - v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc))); - wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0)); - v_curr.ptr += 3; - v_prev.ptr += 3; - } - v_curr.len = 0; - v_prev.len = 0; - } - return wuffs_base__make_empty_struct(); -} -#endif // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) -// ‼ WUFFS MULTI-FILE SECTION -arm_neon - -// ‼ WUFFS MULTI-FILE SECTION +arm_neon -// -------- func png.decoder.filter_4_distance_4_arm_neon - -#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) -static wuffs_base__empty_struct -wuffs_png__decoder__filter_4_distance_4_arm_neon( - wuffs_png__decoder* self, - wuffs_base__slice_u8 a_curr, - wuffs_base__slice_u8 a_prev) { - wuffs_base__slice_u8 v_curr = {0}; - wuffs_base__slice_u8 v_prev = {0}; - uint8x8_t v_fa = {0}; - uint8x8_t v_fb = {0}; - uint8x8_t v_fc = {0}; - uint8x8_t v_fx = {0}; - uint16x8_t v_fafb = {0}; - uint16x8_t v_fcfc = {0}; - uint16x8_t v_pa = {0}; - uint16x8_t v_pb = {0}; - uint16x8_t v_pc = {0}; - uint16x8_t v_cmpab = {0}; - uint16x8_t v_cmpac = {0}; - uint8x8_t v_picka = {0}; - uint8x8_t v_pickb = {0}; - - { - wuffs_base__slice_u8 i_slice_curr = a_curr; - v_curr.ptr = i_slice_curr.ptr; - wuffs_base__slice_u8 i_slice_prev = a_prev; - v_prev.ptr = i_slice_prev.ptr; - i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len))); - v_curr.len = 4; - v_prev.len = 4; - uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8); - while (v_curr.ptr < i_end0_curr) { - v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr))); - v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); - v_fafb = vaddl_u8(v_fa, v_fb); - v_fcfc = vaddl_u8(v_fc, v_fc); - v_pa = vabdl_u8(v_fb, v_fc); - v_pb = vabdl_u8(v_fa, v_fc); - v_pc = vabdq_u16(v_fafb, v_fcfc); - v_cmpab = vcleq_u16(v_pa, v_pb); - v_cmpac = vcleq_u16(v_pa, v_pc); - v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac)); - v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc)); - v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc))); - wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0)); - v_fc = v_fb; - v_fa = v_fx; - v_curr.ptr += 4; - v_prev.ptr += 4; - v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr))); - v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); - v_fafb = vaddl_u8(v_fa, v_fb); - v_fcfc = vaddl_u8(v_fc, v_fc); - v_pa = vabdl_u8(v_fb, v_fc); - v_pb = vabdl_u8(v_fa, v_fc); - v_pc = vabdq_u16(v_fafb, v_fcfc); - v_cmpab = vcleq_u16(v_pa, v_pb); - v_cmpac = vcleq_u16(v_pa, v_pc); - v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac)); - v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc)); - v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc))); - wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0)); - v_fc = v_fb; - v_fa = v_fx; - v_curr.ptr += 4; - v_prev.ptr += 4; - } - v_curr.len = 4; - v_prev.len = 4; - uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4); - while (v_curr.ptr < i_end1_curr) { - v_fb = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr))); - v_fx = vreinterpret_u8_u32(vdup_n_u32(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); - v_fafb = vaddl_u8(v_fa, v_fb); - v_fcfc = vaddl_u8(v_fc, v_fc); - v_pa = vabdl_u8(v_fb, v_fc); - v_pb = vabdl_u8(v_fa, v_fc); - v_pc = vabdq_u16(v_fafb, v_fcfc); - v_cmpab = vcleq_u16(v_pa, v_pb); - v_cmpac = vcleq_u16(v_pa, v_pc); - v_picka = vmovn_u16(vandq_u16(v_cmpab, v_cmpac)); - v_pickb = vmovn_u16(vcleq_u16(v_pb, v_pc)); - v_fx = vadd_u8(v_fx, vbsl_u8(v_picka, v_fa, vbsl_u8(v_pickb, v_fb, v_fc))); - wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, vget_lane_u32(vreinterpret_u32_u8(v_fx), 0)); - v_fc = v_fb; - v_fa = v_fx; - v_curr.ptr += 4; - v_prev.ptr += 4; - } - v_curr.len = 0; - v_prev.len = 0; - } - return wuffs_base__make_empty_struct(); -} -#endif // defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) -// ‼ WUFFS MULTI-FILE SECTION -arm_neon - -// -------- func png.decoder.filter_1 - -static wuffs_base__empty_struct -wuffs_png__decoder__filter_1( - wuffs_png__decoder* self, - wuffs_base__slice_u8 a_curr) { - return (*self->private_impl.choosy_filter_1)(self, a_curr); -} - -static wuffs_base__empty_struct -wuffs_png__decoder__filter_1__choosy_default( - wuffs_png__decoder* self, - wuffs_base__slice_u8 a_curr) { - uint64_t v_filter_distance = 0; - uint8_t v_fa = 0; - uint64_t v_i_start = 0; - uint64_t v_i = 0; - - v_filter_distance = ((uint64_t)(self->private_impl.f_filter_distance)); - v_i_start = 0; - while (v_i_start < v_filter_distance) { - v_fa = 0; - v_i = v_i_start; - while (v_i < ((uint64_t)(a_curr.len))) { - a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + v_fa)); - v_fa = a_curr.ptr[v_i]; - v_i += v_filter_distance; - } - v_i_start += 1; - } - return wuffs_base__make_empty_struct(); -} - -// -------- func png.decoder.filter_1_distance_3_fallback - -static wuffs_base__empty_struct -wuffs_png__decoder__filter_1_distance_3_fallback( - wuffs_png__decoder* self, - wuffs_base__slice_u8 a_curr) { - wuffs_base__slice_u8 v_curr = {0}; - uint8_t v_fa0 = 0; - uint8_t v_fa1 = 0; - uint8_t v_fa2 = 0; - - { - wuffs_base__slice_u8 i_slice_curr = a_curr; - v_curr.ptr = i_slice_curr.ptr; - v_curr.len = 3; - uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 6) * 6); - while (v_curr.ptr < i_end0_curr) { - v_fa0 = ((uint8_t)(v_fa0 + v_curr.ptr[0])); - v_curr.ptr[0] = v_fa0; - v_fa1 = ((uint8_t)(v_fa1 + v_curr.ptr[1])); - v_curr.ptr[1] = v_fa1; - v_fa2 = ((uint8_t)(v_fa2 + v_curr.ptr[2])); - v_curr.ptr[2] = v_fa2; - v_curr.ptr += 3; - v_fa0 = ((uint8_t)(v_fa0 + v_curr.ptr[0])); - v_curr.ptr[0] = v_fa0; - v_fa1 = ((uint8_t)(v_fa1 + v_curr.ptr[1])); - v_curr.ptr[1] = v_fa1; - v_fa2 = ((uint8_t)(v_fa2 + v_curr.ptr[2])); - v_curr.ptr[2] = v_fa2; - v_curr.ptr += 3; - } - v_curr.len = 3; - uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 3) * 3); - while (v_curr.ptr < i_end1_curr) { - v_fa0 = ((uint8_t)(v_fa0 + v_curr.ptr[0])); - v_curr.ptr[0] = v_fa0; - v_fa1 = ((uint8_t)(v_fa1 + v_curr.ptr[1])); - v_curr.ptr[1] = v_fa1; - v_fa2 = ((uint8_t)(v_fa2 + v_curr.ptr[2])); - v_curr.ptr[2] = v_fa2; - v_curr.ptr += 3; - } - v_curr.len = 0; - } - return wuffs_base__make_empty_struct(); -} - -// -------- func png.decoder.filter_1_distance_4_fallback - -static wuffs_base__empty_struct -wuffs_png__decoder__filter_1_distance_4_fallback( - wuffs_png__decoder* self, - wuffs_base__slice_u8 a_curr) { - wuffs_base__slice_u8 v_curr = {0}; - uint8_t v_fa0 = 0; - uint8_t v_fa1 = 0; - uint8_t v_fa2 = 0; - uint8_t v_fa3 = 0; - - { - wuffs_base__slice_u8 i_slice_curr = a_curr; - v_curr.ptr = i_slice_curr.ptr; - v_curr.len = 4; - uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4); - while (v_curr.ptr < i_end0_curr) { - v_fa0 = ((uint8_t)(v_fa0 + v_curr.ptr[0])); - v_curr.ptr[0] = v_fa0; - v_fa1 = ((uint8_t)(v_fa1 + v_curr.ptr[1])); - v_curr.ptr[1] = v_fa1; - v_fa2 = ((uint8_t)(v_fa2 + v_curr.ptr[2])); - v_curr.ptr[2] = v_fa2; - v_fa3 = ((uint8_t)(v_fa3 + v_curr.ptr[3])); - v_curr.ptr[3] = v_fa3; - v_curr.ptr += 4; - } - v_curr.len = 0; - } - return wuffs_base__make_empty_struct(); -} - -// -------- func png.decoder.filter_2 - -static wuffs_base__empty_struct -wuffs_png__decoder__filter_2( - wuffs_png__decoder* self, - wuffs_base__slice_u8 a_curr, - wuffs_base__slice_u8 a_prev) { - uint64_t v_n = 0; - uint64_t v_i = 0; - - v_n = wuffs_base__u64__min(((uint64_t)(a_curr.len)), ((uint64_t)(a_prev.len))); - v_i = 0; - while (v_i < v_n) { - a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + a_prev.ptr[v_i])); - v_i += 1; - } - return wuffs_base__make_empty_struct(); -} - -// -------- func png.decoder.filter_3 - -static wuffs_base__empty_struct -wuffs_png__decoder__filter_3( - wuffs_png__decoder* self, - wuffs_base__slice_u8 a_curr, - wuffs_base__slice_u8 a_prev) { - return (*self->private_impl.choosy_filter_3)(self, a_curr, a_prev); -} - -static wuffs_base__empty_struct -wuffs_png__decoder__filter_3__choosy_default( - wuffs_png__decoder* self, - wuffs_base__slice_u8 a_curr, - wuffs_base__slice_u8 a_prev) { - uint64_t v_filter_distance = 0; - uint64_t v_n = 0; - uint64_t v_i = 0; - - v_filter_distance = ((uint64_t)(self->private_impl.f_filter_distance)); - if (((uint64_t)(a_prev.len)) == 0) { - v_i = v_filter_distance; - while (v_i < ((uint64_t)(a_curr.len))) { - a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + (a_curr.ptr[(v_i - v_filter_distance)] / 2))); - v_i += 1; - } - } else { - v_n = wuffs_base__u64__min(((uint64_t)(a_curr.len)), ((uint64_t)(a_prev.len))); - v_i = 0; - while ((v_i < v_n) && (v_i < v_filter_distance)) { - a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + (a_prev.ptr[v_i] / 2))); - v_i += 1; - } - v_i = v_filter_distance; - while (v_i < v_n) { - a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + ((uint8_t)(((((uint32_t)(a_curr.ptr[(v_i - v_filter_distance)])) + ((uint32_t)(a_prev.ptr[v_i]))) / 2))))); - v_i += 1; - } - } - return wuffs_base__make_empty_struct(); -} - -// -------- func png.decoder.filter_3_distance_3_fallback - -static wuffs_base__empty_struct -wuffs_png__decoder__filter_3_distance_3_fallback( - wuffs_png__decoder* self, - wuffs_base__slice_u8 a_curr, - wuffs_base__slice_u8 a_prev) { - wuffs_base__slice_u8 v_curr = {0}; - wuffs_base__slice_u8 v_prev = {0}; - uint8_t v_fa0 = 0; - uint8_t v_fa1 = 0; - uint8_t v_fa2 = 0; - - if (((uint64_t)(a_prev.len)) == 0) { - { - wuffs_base__slice_u8 i_slice_curr = a_curr; - v_curr.ptr = i_slice_curr.ptr; - v_curr.len = 3; - uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 6) * 6); - while (v_curr.ptr < i_end0_curr) { - v_fa0 = ((uint8_t)((v_fa0 / 2) + v_curr.ptr[0])); - v_curr.ptr[0] = v_fa0; - v_fa1 = ((uint8_t)((v_fa1 / 2) + v_curr.ptr[1])); - v_curr.ptr[1] = v_fa1; - v_fa2 = ((uint8_t)((v_fa2 / 2) + v_curr.ptr[2])); - v_curr.ptr[2] = v_fa2; - v_curr.ptr += 3; - v_fa0 = ((uint8_t)((v_fa0 / 2) + v_curr.ptr[0])); - v_curr.ptr[0] = v_fa0; - v_fa1 = ((uint8_t)((v_fa1 / 2) + v_curr.ptr[1])); - v_curr.ptr[1] = v_fa1; - v_fa2 = ((uint8_t)((v_fa2 / 2) + v_curr.ptr[2])); - v_curr.ptr[2] = v_fa2; - v_curr.ptr += 3; - } - v_curr.len = 3; - uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 3) * 3); - while (v_curr.ptr < i_end1_curr) { - v_fa0 = ((uint8_t)((v_fa0 / 2) + v_curr.ptr[0])); - v_curr.ptr[0] = v_fa0; - v_fa1 = ((uint8_t)((v_fa1 / 2) + v_curr.ptr[1])); - v_curr.ptr[1] = v_fa1; - v_fa2 = ((uint8_t)((v_fa2 / 2) + v_curr.ptr[2])); - v_curr.ptr[2] = v_fa2; - v_curr.ptr += 3; - } - v_curr.len = 0; - } - } else { - { - wuffs_base__slice_u8 i_slice_curr = a_curr; - v_curr.ptr = i_slice_curr.ptr; - wuffs_base__slice_u8 i_slice_prev = a_prev; - v_prev.ptr = i_slice_prev.ptr; - i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len))); - v_curr.len = 3; - v_prev.len = 3; - uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 6) * 6); - while (v_curr.ptr < i_end0_curr) { - v_fa0 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa0)) + ((uint32_t)(v_prev.ptr[0]))) / 2))) + v_curr.ptr[0])); - v_curr.ptr[0] = v_fa0; - v_fa1 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa1)) + ((uint32_t)(v_prev.ptr[1]))) / 2))) + v_curr.ptr[1])); - v_curr.ptr[1] = v_fa1; - v_fa2 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa2)) + ((uint32_t)(v_prev.ptr[2]))) / 2))) + v_curr.ptr[2])); - v_curr.ptr[2] = v_fa2; - v_curr.ptr += 3; - v_prev.ptr += 3; - v_fa0 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa0)) + ((uint32_t)(v_prev.ptr[0]))) / 2))) + v_curr.ptr[0])); - v_curr.ptr[0] = v_fa0; - v_fa1 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa1)) + ((uint32_t)(v_prev.ptr[1]))) / 2))) + v_curr.ptr[1])); - v_curr.ptr[1] = v_fa1; - v_fa2 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa2)) + ((uint32_t)(v_prev.ptr[2]))) / 2))) + v_curr.ptr[2])); - v_curr.ptr[2] = v_fa2; - v_curr.ptr += 3; - v_prev.ptr += 3; - } - v_curr.len = 3; - v_prev.len = 3; - uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 3) * 3); - while (v_curr.ptr < i_end1_curr) { - v_fa0 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa0)) + ((uint32_t)(v_prev.ptr[0]))) / 2))) + v_curr.ptr[0])); - v_curr.ptr[0] = v_fa0; - v_fa1 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa1)) + ((uint32_t)(v_prev.ptr[1]))) / 2))) + v_curr.ptr[1])); - v_curr.ptr[1] = v_fa1; - v_fa2 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa2)) + ((uint32_t)(v_prev.ptr[2]))) / 2))) + v_curr.ptr[2])); - v_curr.ptr[2] = v_fa2; - v_curr.ptr += 3; - v_prev.ptr += 3; - } - v_curr.len = 0; - v_prev.len = 0; - } - } - return wuffs_base__make_empty_struct(); -} - -// -------- func png.decoder.filter_3_distance_4_fallback - -static wuffs_base__empty_struct -wuffs_png__decoder__filter_3_distance_4_fallback( - wuffs_png__decoder* self, - wuffs_base__slice_u8 a_curr, - wuffs_base__slice_u8 a_prev) { - wuffs_base__slice_u8 v_curr = {0}; - wuffs_base__slice_u8 v_prev = {0}; - uint8_t v_fa0 = 0; - uint8_t v_fa1 = 0; - uint8_t v_fa2 = 0; - uint8_t v_fa3 = 0; - - if (((uint64_t)(a_prev.len)) == 0) { - { - wuffs_base__slice_u8 i_slice_curr = a_curr; - v_curr.ptr = i_slice_curr.ptr; - v_curr.len = 4; - uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4); - while (v_curr.ptr < i_end0_curr) { - v_fa0 = ((uint8_t)((v_fa0 / 2) + v_curr.ptr[0])); - v_curr.ptr[0] = v_fa0; - v_fa1 = ((uint8_t)((v_fa1 / 2) + v_curr.ptr[1])); - v_curr.ptr[1] = v_fa1; - v_fa2 = ((uint8_t)((v_fa2 / 2) + v_curr.ptr[2])); - v_curr.ptr[2] = v_fa2; - v_fa3 = ((uint8_t)((v_fa3 / 2) + v_curr.ptr[3])); - v_curr.ptr[3] = v_fa3; - v_curr.ptr += 4; - } - v_curr.len = 0; - } - } else { - { - wuffs_base__slice_u8 i_slice_curr = a_curr; - v_curr.ptr = i_slice_curr.ptr; - wuffs_base__slice_u8 i_slice_prev = a_prev; - v_prev.ptr = i_slice_prev.ptr; - i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len))); - v_curr.len = 4; - v_prev.len = 4; - uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4); - while (v_curr.ptr < i_end0_curr) { - v_fa0 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa0)) + ((uint32_t)(v_prev.ptr[0]))) / 2))) + v_curr.ptr[0])); - v_curr.ptr[0] = v_fa0; - v_fa1 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa1)) + ((uint32_t)(v_prev.ptr[1]))) / 2))) + v_curr.ptr[1])); - v_curr.ptr[1] = v_fa1; - v_fa2 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa2)) + ((uint32_t)(v_prev.ptr[2]))) / 2))) + v_curr.ptr[2])); - v_curr.ptr[2] = v_fa2; - v_fa3 = ((uint8_t)(((uint8_t)(((((uint32_t)(v_fa3)) + ((uint32_t)(v_prev.ptr[3]))) / 2))) + v_curr.ptr[3])); - v_curr.ptr[3] = v_fa3; - v_curr.ptr += 4; - v_prev.ptr += 4; - } - v_curr.len = 0; - v_prev.len = 0; - } - } - return wuffs_base__make_empty_struct(); -} - -// -------- func png.decoder.filter_4 - -static wuffs_base__empty_struct -wuffs_png__decoder__filter_4( - wuffs_png__decoder* self, - wuffs_base__slice_u8 a_curr, - wuffs_base__slice_u8 a_prev) { - return (*self->private_impl.choosy_filter_4)(self, a_curr, a_prev); -} - -static wuffs_base__empty_struct -wuffs_png__decoder__filter_4__choosy_default( - wuffs_png__decoder* self, - wuffs_base__slice_u8 a_curr, - wuffs_base__slice_u8 a_prev) { - uint64_t v_filter_distance = 0; - uint64_t v_n = 0; - uint64_t v_i = 0; - uint32_t v_fa = 0; - uint32_t v_fb = 0; - uint32_t v_fc = 0; - uint32_t v_pp = 0; - uint32_t v_pa = 0; - uint32_t v_pb = 0; - uint32_t v_pc = 0; - - v_filter_distance = ((uint64_t)(self->private_impl.f_filter_distance)); - v_n = wuffs_base__u64__min(((uint64_t)(a_curr.len)), ((uint64_t)(a_prev.len))); - v_i = 0; - while ((v_i < v_n) && (v_i < v_filter_distance)) { - a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + a_prev.ptr[v_i])); - v_i += 1; - } - v_i = v_filter_distance; - while (v_i < v_n) { - v_fa = ((uint32_t)(a_curr.ptr[(v_i - v_filter_distance)])); - v_fb = ((uint32_t)(a_prev.ptr[v_i])); - v_fc = ((uint32_t)(a_prev.ptr[(v_i - v_filter_distance)])); - v_pp = ((uint32_t)(((uint32_t)(v_fa + v_fb)) - v_fc)); - v_pa = ((uint32_t)(v_pp - v_fa)); - if (v_pa >= 2147483648) { - v_pa = ((uint32_t)(0 - v_pa)); - } - v_pb = ((uint32_t)(v_pp - v_fb)); - if (v_pb >= 2147483648) { - v_pb = ((uint32_t)(0 - v_pb)); - } - v_pc = ((uint32_t)(v_pp - v_fc)); - if (v_pc >= 2147483648) { - v_pc = ((uint32_t)(0 - v_pc)); - } - if ((v_pa <= v_pb) && (v_pa <= v_pc)) { - } else if (v_pb <= v_pc) { - v_fa = v_fb; - } else { - v_fa = v_fc; - } - a_curr.ptr[v_i] = ((uint8_t)(a_curr.ptr[v_i] + ((uint8_t)((v_fa & 255))))); - v_i += 1; - } - return wuffs_base__make_empty_struct(); -} - -// -------- func png.decoder.filter_4_distance_3_fallback - -static wuffs_base__empty_struct -wuffs_png__decoder__filter_4_distance_3_fallback( - wuffs_png__decoder* self, - wuffs_base__slice_u8 a_curr, - wuffs_base__slice_u8 a_prev) { - wuffs_base__slice_u8 v_curr = {0}; - wuffs_base__slice_u8 v_prev = {0}; - uint32_t v_fa0 = 0; - uint32_t v_fa1 = 0; - uint32_t v_fa2 = 0; - uint32_t v_fb0 = 0; - uint32_t v_fb1 = 0; - uint32_t v_fb2 = 0; - uint32_t v_fc0 = 0; - uint32_t v_fc1 = 0; - uint32_t v_fc2 = 0; - uint32_t v_pp0 = 0; - uint32_t v_pp1 = 0; - uint32_t v_pp2 = 0; - uint32_t v_pa0 = 0; - uint32_t v_pa1 = 0; - uint32_t v_pa2 = 0; - uint32_t v_pb0 = 0; - uint32_t v_pb1 = 0; - uint32_t v_pb2 = 0; - uint32_t v_pc0 = 0; - uint32_t v_pc1 = 0; - uint32_t v_pc2 = 0; - - { - wuffs_base__slice_u8 i_slice_curr = a_curr; - v_curr.ptr = i_slice_curr.ptr; - wuffs_base__slice_u8 i_slice_prev = a_prev; - v_prev.ptr = i_slice_prev.ptr; - i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len))); - v_curr.len = 3; - v_prev.len = 3; - uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 3) * 3); - while (v_curr.ptr < i_end0_curr) { - v_fb0 = ((uint32_t)(v_prev.ptr[0])); - v_pp0 = ((uint32_t)(((uint32_t)(v_fa0 + v_fb0)) - v_fc0)); - v_pa0 = ((uint32_t)(v_pp0 - v_fa0)); - if (v_pa0 >= 2147483648) { - v_pa0 = ((uint32_t)(0 - v_pa0)); - } - v_pb0 = ((uint32_t)(v_pp0 - v_fb0)); - if (v_pb0 >= 2147483648) { - v_pb0 = ((uint32_t)(0 - v_pb0)); - } - v_pc0 = ((uint32_t)(v_pp0 - v_fc0)); - if (v_pc0 >= 2147483648) { - v_pc0 = ((uint32_t)(0 - v_pc0)); - } - if ((v_pa0 <= v_pb0) && (v_pa0 <= v_pc0)) { - } else if (v_pb0 <= v_pc0) { - v_fa0 = v_fb0; - } else { - v_fa0 = v_fc0; - } - v_curr.ptr[0] = ((uint8_t)(v_curr.ptr[0] + ((uint8_t)((v_fa0 & 255))))); - v_fa0 = ((uint32_t)(v_curr.ptr[0])); - v_fc0 = v_fb0; - v_fb1 = ((uint32_t)(v_prev.ptr[1])); - v_pp1 = ((uint32_t)(((uint32_t)(v_fa1 + v_fb1)) - v_fc1)); - v_pa1 = ((uint32_t)(v_pp1 - v_fa1)); - if (v_pa1 >= 2147483648) { - v_pa1 = ((uint32_t)(0 - v_pa1)); - } - v_pb1 = ((uint32_t)(v_pp1 - v_fb1)); - if (v_pb1 >= 2147483648) { - v_pb1 = ((uint32_t)(0 - v_pb1)); - } - v_pc1 = ((uint32_t)(v_pp1 - v_fc1)); - if (v_pc1 >= 2147483648) { - v_pc1 = ((uint32_t)(0 - v_pc1)); - } - if ((v_pa1 <= v_pb1) && (v_pa1 <= v_pc1)) { - } else if (v_pb1 <= v_pc1) { - v_fa1 = v_fb1; - } else { - v_fa1 = v_fc1; - } - v_curr.ptr[1] = ((uint8_t)(v_curr.ptr[1] + ((uint8_t)((v_fa1 & 255))))); - v_fa1 = ((uint32_t)(v_curr.ptr[1])); - v_fc1 = v_fb1; - v_fb2 = ((uint32_t)(v_prev.ptr[2])); - v_pp2 = ((uint32_t)(((uint32_t)(v_fa2 + v_fb2)) - v_fc2)); - v_pa2 = ((uint32_t)(v_pp2 - v_fa2)); - if (v_pa2 >= 2147483648) { - v_pa2 = ((uint32_t)(0 - v_pa2)); - } - v_pb2 = ((uint32_t)(v_pp2 - v_fb2)); - if (v_pb2 >= 2147483648) { - v_pb2 = ((uint32_t)(0 - v_pb2)); - } - v_pc2 = ((uint32_t)(v_pp2 - v_fc2)); - if (v_pc2 >= 2147483648) { - v_pc2 = ((uint32_t)(0 - v_pc2)); - } - if ((v_pa2 <= v_pb2) && (v_pa2 <= v_pc2)) { - } else if (v_pb2 <= v_pc2) { - v_fa2 = v_fb2; - } else { - v_fa2 = v_fc2; - } - v_curr.ptr[2] = ((uint8_t)(v_curr.ptr[2] + ((uint8_t)((v_fa2 & 255))))); - v_fa2 = ((uint32_t)(v_curr.ptr[2])); - v_fc2 = v_fb2; - v_curr.ptr += 3; - v_prev.ptr += 3; - } - v_curr.len = 0; - v_prev.len = 0; - } - return wuffs_base__make_empty_struct(); -} - -// -------- func png.decoder.filter_4_distance_4_fallback - -static wuffs_base__empty_struct -wuffs_png__decoder__filter_4_distance_4_fallback( - wuffs_png__decoder* self, - wuffs_base__slice_u8 a_curr, - wuffs_base__slice_u8 a_prev) { - wuffs_base__slice_u8 v_curr = {0}; - wuffs_base__slice_u8 v_prev = {0}; - uint32_t v_fa0 = 0; - uint32_t v_fa1 = 0; - uint32_t v_fa2 = 0; - uint32_t v_fa3 = 0; - uint32_t v_fb0 = 0; - uint32_t v_fb1 = 0; - uint32_t v_fb2 = 0; - uint32_t v_fb3 = 0; - uint32_t v_fc0 = 0; - uint32_t v_fc1 = 0; - uint32_t v_fc2 = 0; - uint32_t v_fc3 = 0; - uint32_t v_pp0 = 0; - uint32_t v_pp1 = 0; - uint32_t v_pp2 = 0; - uint32_t v_pp3 = 0; - uint32_t v_pa0 = 0; - uint32_t v_pa1 = 0; - uint32_t v_pa2 = 0; - uint32_t v_pa3 = 0; - uint32_t v_pb0 = 0; - uint32_t v_pb1 = 0; - uint32_t v_pb2 = 0; - uint32_t v_pb3 = 0; - uint32_t v_pc0 = 0; - uint32_t v_pc1 = 0; - uint32_t v_pc2 = 0; - uint32_t v_pc3 = 0; - - { - wuffs_base__slice_u8 i_slice_curr = a_curr; - v_curr.ptr = i_slice_curr.ptr; - wuffs_base__slice_u8 i_slice_prev = a_prev; - v_prev.ptr = i_slice_prev.ptr; - i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len))); - v_curr.len = 4; - v_prev.len = 4; - uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4); - while (v_curr.ptr < i_end0_curr) { - v_fb0 = ((uint32_t)(v_prev.ptr[0])); - v_pp0 = ((uint32_t)(((uint32_t)(v_fa0 + v_fb0)) - v_fc0)); - v_pa0 = ((uint32_t)(v_pp0 - v_fa0)); - if (v_pa0 >= 2147483648) { - v_pa0 = ((uint32_t)(0 - v_pa0)); - } - v_pb0 = ((uint32_t)(v_pp0 - v_fb0)); - if (v_pb0 >= 2147483648) { - v_pb0 = ((uint32_t)(0 - v_pb0)); - } - v_pc0 = ((uint32_t)(v_pp0 - v_fc0)); - if (v_pc0 >= 2147483648) { - v_pc0 = ((uint32_t)(0 - v_pc0)); - } - if ((v_pa0 <= v_pb0) && (v_pa0 <= v_pc0)) { - } else if (v_pb0 <= v_pc0) { - v_fa0 = v_fb0; - } else { - v_fa0 = v_fc0; - } - v_curr.ptr[0] = ((uint8_t)(v_curr.ptr[0] + ((uint8_t)((v_fa0 & 255))))); - v_fa0 = ((uint32_t)(v_curr.ptr[0])); - v_fc0 = v_fb0; - v_fb1 = ((uint32_t)(v_prev.ptr[1])); - v_pp1 = ((uint32_t)(((uint32_t)(v_fa1 + v_fb1)) - v_fc1)); - v_pa1 = ((uint32_t)(v_pp1 - v_fa1)); - if (v_pa1 >= 2147483648) { - v_pa1 = ((uint32_t)(0 - v_pa1)); - } - v_pb1 = ((uint32_t)(v_pp1 - v_fb1)); - if (v_pb1 >= 2147483648) { - v_pb1 = ((uint32_t)(0 - v_pb1)); - } - v_pc1 = ((uint32_t)(v_pp1 - v_fc1)); - if (v_pc1 >= 2147483648) { - v_pc1 = ((uint32_t)(0 - v_pc1)); - } - if ((v_pa1 <= v_pb1) && (v_pa1 <= v_pc1)) { - } else if (v_pb1 <= v_pc1) { - v_fa1 = v_fb1; - } else { - v_fa1 = v_fc1; - } - v_curr.ptr[1] = ((uint8_t)(v_curr.ptr[1] + ((uint8_t)((v_fa1 & 255))))); - v_fa1 = ((uint32_t)(v_curr.ptr[1])); - v_fc1 = v_fb1; - v_fb2 = ((uint32_t)(v_prev.ptr[2])); - v_pp2 = ((uint32_t)(((uint32_t)(v_fa2 + v_fb2)) - v_fc2)); - v_pa2 = ((uint32_t)(v_pp2 - v_fa2)); - if (v_pa2 >= 2147483648) { - v_pa2 = ((uint32_t)(0 - v_pa2)); - } - v_pb2 = ((uint32_t)(v_pp2 - v_fb2)); - if (v_pb2 >= 2147483648) { - v_pb2 = ((uint32_t)(0 - v_pb2)); - } - v_pc2 = ((uint32_t)(v_pp2 - v_fc2)); - if (v_pc2 >= 2147483648) { - v_pc2 = ((uint32_t)(0 - v_pc2)); - } - if ((v_pa2 <= v_pb2) && (v_pa2 <= v_pc2)) { - } else if (v_pb2 <= v_pc2) { - v_fa2 = v_fb2; - } else { - v_fa2 = v_fc2; - } - v_curr.ptr[2] = ((uint8_t)(v_curr.ptr[2] + ((uint8_t)((v_fa2 & 255))))); - v_fa2 = ((uint32_t)(v_curr.ptr[2])); - v_fc2 = v_fb2; - v_fb3 = ((uint32_t)(v_prev.ptr[3])); - v_pp3 = ((uint32_t)(((uint32_t)(v_fa3 + v_fb3)) - v_fc3)); - v_pa3 = ((uint32_t)(v_pp3 - v_fa3)); - if (v_pa3 >= 2147483648) { - v_pa3 = ((uint32_t)(0 - v_pa3)); - } - v_pb3 = ((uint32_t)(v_pp3 - v_fb3)); - if (v_pb3 >= 2147483648) { - v_pb3 = ((uint32_t)(0 - v_pb3)); - } - v_pc3 = ((uint32_t)(v_pp3 - v_fc3)); - if (v_pc3 >= 2147483648) { - v_pc3 = ((uint32_t)(0 - v_pc3)); - } - if ((v_pa3 <= v_pb3) && (v_pa3 <= v_pc3)) { - } else if (v_pb3 <= v_pc3) { - v_fa3 = v_fb3; - } else { - v_fa3 = v_fc3; - } - v_curr.ptr[3] = ((uint8_t)(v_curr.ptr[3] + ((uint8_t)((v_fa3 & 255))))); - v_fa3 = ((uint32_t)(v_curr.ptr[3])); - v_fc3 = v_fb3; - v_curr.ptr += 4; - v_prev.ptr += 4; - } - v_curr.len = 0; - v_prev.len = 0; - } - return wuffs_base__make_empty_struct(); -} - -// ‼ WUFFS MULTI-FILE SECTION +x86_sse42 -// -------- func png.decoder.filter_1_distance_4_x86_sse42 - -#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) -WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2") -static wuffs_base__empty_struct -wuffs_png__decoder__filter_1_distance_4_x86_sse42( - wuffs_png__decoder* self, - wuffs_base__slice_u8 a_curr) { - wuffs_base__slice_u8 v_curr = {0}; - __m128i v_x128 = {0}; - __m128i v_a128 = {0}; - - { - wuffs_base__slice_u8 i_slice_curr = a_curr; - v_curr.ptr = i_slice_curr.ptr; - v_curr.len = 4; - uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8); - while (v_curr.ptr < i_end0_curr) { - v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); - v_x128 = _mm_add_epi8(v_x128, v_a128); - v_a128 = v_x128; - wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128)))); - v_curr.ptr += 4; - v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); - v_x128 = _mm_add_epi8(v_x128, v_a128); - v_a128 = v_x128; - wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128)))); - v_curr.ptr += 4; - } - v_curr.len = 4; - uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4); - while (v_curr.ptr < i_end1_curr) { - v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); - v_x128 = _mm_add_epi8(v_x128, v_a128); - v_a128 = v_x128; - wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128)))); - v_curr.ptr += 4; - } - v_curr.len = 0; - } - return wuffs_base__make_empty_struct(); -} -#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) -// ‼ WUFFS MULTI-FILE SECTION -x86_sse42 - -// ‼ WUFFS MULTI-FILE SECTION +x86_sse42 -// -------- func png.decoder.filter_3_distance_4_x86_sse42 - -#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) -WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2") -static wuffs_base__empty_struct -wuffs_png__decoder__filter_3_distance_4_x86_sse42( - wuffs_png__decoder* self, - wuffs_base__slice_u8 a_curr, - wuffs_base__slice_u8 a_prev) { - wuffs_base__slice_u8 v_curr = {0}; - wuffs_base__slice_u8 v_prev = {0}; - __m128i v_x128 = {0}; - __m128i v_a128 = {0}; - __m128i v_b128 = {0}; - __m128i v_p128 = {0}; - __m128i v_k128 = {0}; - - if (((uint64_t)(a_prev.len)) == 0) { - v_k128 = _mm_set1_epi8((int8_t)(254)); - { - wuffs_base__slice_u8 i_slice_curr = a_curr; - v_curr.ptr = i_slice_curr.ptr; - v_curr.len = 4; - uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8); - while (v_curr.ptr < i_end0_curr) { - v_p128 = _mm_avg_epu8(_mm_and_si128(v_a128, v_k128), v_b128); - v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); - v_x128 = _mm_add_epi8(v_x128, v_p128); - v_a128 = v_x128; - wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128)))); - v_curr.ptr += 4; - v_p128 = _mm_avg_epu8(_mm_and_si128(v_a128, v_k128), v_b128); - v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); - v_x128 = _mm_add_epi8(v_x128, v_p128); - v_a128 = v_x128; - wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128)))); - v_curr.ptr += 4; - } - v_curr.len = 4; - uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4); - while (v_curr.ptr < i_end1_curr) { - v_p128 = _mm_avg_epu8(_mm_and_si128(v_a128, v_k128), v_b128); - v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); - v_x128 = _mm_add_epi8(v_x128, v_p128); - v_a128 = v_x128; - wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128)))); - v_curr.ptr += 4; - } - v_curr.len = 0; - } - } else { - v_k128 = _mm_set1_epi8((int8_t)(1)); - { - wuffs_base__slice_u8 i_slice_curr = a_curr; - v_curr.ptr = i_slice_curr.ptr; - wuffs_base__slice_u8 i_slice_prev = a_prev; - v_prev.ptr = i_slice_prev.ptr; - i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len))); - v_curr.len = 4; - v_prev.len = 4; - uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8); - while (v_curr.ptr < i_end0_curr) { - v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr))); - v_p128 = _mm_avg_epu8(v_a128, v_b128); - v_p128 = _mm_sub_epi8(v_p128, _mm_and_si128(v_k128, _mm_xor_si128(v_a128, v_b128))); - v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); - v_x128 = _mm_add_epi8(v_x128, v_p128); - v_a128 = v_x128; - wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128)))); - v_curr.ptr += 4; - v_prev.ptr += 4; - v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr))); - v_p128 = _mm_avg_epu8(v_a128, v_b128); - v_p128 = _mm_sub_epi8(v_p128, _mm_and_si128(v_k128, _mm_xor_si128(v_a128, v_b128))); - v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); - v_x128 = _mm_add_epi8(v_x128, v_p128); - v_a128 = v_x128; - wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128)))); - v_curr.ptr += 4; - v_prev.ptr += 4; - } - v_curr.len = 4; - v_prev.len = 4; - uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4); - while (v_curr.ptr < i_end1_curr) { - v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr))); - v_p128 = _mm_avg_epu8(v_a128, v_b128); - v_p128 = _mm_sub_epi8(v_p128, _mm_and_si128(v_k128, _mm_xor_si128(v_a128, v_b128))); - v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); - v_x128 = _mm_add_epi8(v_x128, v_p128); - v_a128 = v_x128; - wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128)))); - v_curr.ptr += 4; - v_prev.ptr += 4; - } - v_curr.len = 0; - v_prev.len = 0; - } - } - return wuffs_base__make_empty_struct(); -} -#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) -// ‼ WUFFS MULTI-FILE SECTION -x86_sse42 - -// ‼ WUFFS MULTI-FILE SECTION +x86_sse42 -// -------- func png.decoder.filter_4_distance_3_x86_sse42 - -#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) -WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2") -static wuffs_base__empty_struct -wuffs_png__decoder__filter_4_distance_3_x86_sse42( - wuffs_png__decoder* self, - wuffs_base__slice_u8 a_curr, - wuffs_base__slice_u8 a_prev) { - wuffs_base__slice_u8 v_curr = {0}; - wuffs_base__slice_u8 v_prev = {0}; - __m128i v_x128 = {0}; - __m128i v_a128 = {0}; - __m128i v_b128 = {0}; - __m128i v_c128 = {0}; - __m128i v_p128 = {0}; - __m128i v_pa128 = {0}; - __m128i v_pb128 = {0}; - __m128i v_pc128 = {0}; - __m128i v_smallest128 = {0}; - __m128i v_z128 = {0}; - - { - wuffs_base__slice_u8 i_slice_curr = a_curr; - v_curr.ptr = i_slice_curr.ptr; - wuffs_base__slice_u8 i_slice_prev = a_prev; - v_prev.ptr = i_slice_prev.ptr; - i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len))); - v_curr.len = 4; - v_prev.len = 4; - uint8_t* i_end0_curr = v_curr.ptr + wuffs_base__iterate_total_advance((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)), 7, 6); - while (v_curr.ptr < i_end0_curr) { - v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr))); - v_b128 = _mm_unpacklo_epi8(v_b128, v_z128); - v_pa128 = _mm_sub_epi16(v_b128, v_c128); - v_pb128 = _mm_sub_epi16(v_a128, v_c128); - v_pc128 = _mm_add_epi16(v_pa128, v_pb128); - v_pa128 = _mm_abs_epi16(v_pa128); - v_pb128 = _mm_abs_epi16(v_pb128); - v_pc128 = _mm_abs_epi16(v_pc128); - v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128)); - v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128)); - v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); - v_x128 = _mm_unpacklo_epi8(v_x128, v_z128); - v_x128 = _mm_add_epi8(v_x128, v_p128); - v_a128 = v_x128; - v_c128 = v_b128; - v_x128 = _mm_packus_epi16(v_x128, v_x128); - wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128)))); - v_curr.ptr += 3; - v_prev.ptr += 3; - v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr))); - v_b128 = _mm_unpacklo_epi8(v_b128, v_z128); - v_pa128 = _mm_sub_epi16(v_b128, v_c128); - v_pb128 = _mm_sub_epi16(v_a128, v_c128); - v_pc128 = _mm_add_epi16(v_pa128, v_pb128); - v_pa128 = _mm_abs_epi16(v_pa128); - v_pb128 = _mm_abs_epi16(v_pb128); - v_pc128 = _mm_abs_epi16(v_pc128); - v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128)); - v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128)); - v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); - v_x128 = _mm_unpacklo_epi8(v_x128, v_z128); - v_x128 = _mm_add_epi8(v_x128, v_p128); - v_a128 = v_x128; - v_c128 = v_b128; - v_x128 = _mm_packus_epi16(v_x128, v_x128); - wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128)))); - v_curr.ptr += 3; - v_prev.ptr += 3; - } - v_curr.len = 4; - v_prev.len = 4; - uint8_t* i_end1_curr = v_curr.ptr + wuffs_base__iterate_total_advance((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)), 4, 3); - while (v_curr.ptr < i_end1_curr) { - v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr))); - v_b128 = _mm_unpacklo_epi8(v_b128, v_z128); - v_pa128 = _mm_sub_epi16(v_b128, v_c128); - v_pb128 = _mm_sub_epi16(v_a128, v_c128); - v_pc128 = _mm_add_epi16(v_pa128, v_pb128); - v_pa128 = _mm_abs_epi16(v_pa128); - v_pb128 = _mm_abs_epi16(v_pb128); - v_pc128 = _mm_abs_epi16(v_pc128); - v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128)); - v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128)); - v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); - v_x128 = _mm_unpacklo_epi8(v_x128, v_z128); - v_x128 = _mm_add_epi8(v_x128, v_p128); - v_a128 = v_x128; - v_c128 = v_b128; - v_x128 = _mm_packus_epi16(v_x128, v_x128); - wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128)))); - v_curr.ptr += 3; - v_prev.ptr += 3; - } - v_curr.len = 3; - v_prev.len = 3; - uint8_t* i_end2_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 3) * 3); - while (v_curr.ptr < i_end2_curr) { - v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u24le__no_bounds_check(v_prev.ptr))); - v_b128 = _mm_unpacklo_epi8(v_b128, v_z128); - v_pa128 = _mm_sub_epi16(v_b128, v_c128); - v_pb128 = _mm_sub_epi16(v_a128, v_c128); - v_pc128 = _mm_add_epi16(v_pa128, v_pb128); - v_pa128 = _mm_abs_epi16(v_pa128); - v_pb128 = _mm_abs_epi16(v_pb128); - v_pc128 = _mm_abs_epi16(v_pc128); - v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128)); - v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128)); - v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u24le__no_bounds_check(v_curr.ptr))); - v_x128 = _mm_unpacklo_epi8(v_x128, v_z128); - v_x128 = _mm_add_epi8(v_x128, v_p128); - v_x128 = _mm_packus_epi16(v_x128, v_x128); - wuffs_base__poke_u24le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128)))); - v_curr.ptr += 3; - v_prev.ptr += 3; - } - v_curr.len = 0; - v_prev.len = 0; - } - return wuffs_base__make_empty_struct(); -} -#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) -// ‼ WUFFS MULTI-FILE SECTION -x86_sse42 - -// ‼ WUFFS MULTI-FILE SECTION +x86_sse42 -// -------- func png.decoder.filter_4_distance_4_x86_sse42 - -#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) -WUFFS_BASE__MAYBE_ATTRIBUTE_TARGET("pclmul,popcnt,sse4.2") -static wuffs_base__empty_struct -wuffs_png__decoder__filter_4_distance_4_x86_sse42( - wuffs_png__decoder* self, - wuffs_base__slice_u8 a_curr, - wuffs_base__slice_u8 a_prev) { - wuffs_base__slice_u8 v_curr = {0}; - wuffs_base__slice_u8 v_prev = {0}; - __m128i v_x128 = {0}; - __m128i v_a128 = {0}; - __m128i v_b128 = {0}; - __m128i v_c128 = {0}; - __m128i v_p128 = {0}; - __m128i v_pa128 = {0}; - __m128i v_pb128 = {0}; - __m128i v_pc128 = {0}; - __m128i v_smallest128 = {0}; - __m128i v_z128 = {0}; - - { - wuffs_base__slice_u8 i_slice_curr = a_curr; - v_curr.ptr = i_slice_curr.ptr; - wuffs_base__slice_u8 i_slice_prev = a_prev; - v_prev.ptr = i_slice_prev.ptr; - i_slice_curr.len = ((size_t)(wuffs_base__u64__min(i_slice_curr.len, i_slice_prev.len))); - v_curr.len = 4; - v_prev.len = 4; - uint8_t* i_end0_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 8) * 8); - while (v_curr.ptr < i_end0_curr) { - v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr))); - v_b128 = _mm_unpacklo_epi8(v_b128, v_z128); - v_pa128 = _mm_sub_epi16(v_b128, v_c128); - v_pb128 = _mm_sub_epi16(v_a128, v_c128); - v_pc128 = _mm_add_epi16(v_pa128, v_pb128); - v_pa128 = _mm_abs_epi16(v_pa128); - v_pb128 = _mm_abs_epi16(v_pb128); - v_pc128 = _mm_abs_epi16(v_pc128); - v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128)); - v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128)); - v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); - v_x128 = _mm_unpacklo_epi8(v_x128, v_z128); - v_x128 = _mm_add_epi8(v_x128, v_p128); - v_a128 = v_x128; - v_c128 = v_b128; - v_x128 = _mm_packus_epi16(v_x128, v_x128); - wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128)))); - v_curr.ptr += 4; - v_prev.ptr += 4; - v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr))); - v_b128 = _mm_unpacklo_epi8(v_b128, v_z128); - v_pa128 = _mm_sub_epi16(v_b128, v_c128); - v_pb128 = _mm_sub_epi16(v_a128, v_c128); - v_pc128 = _mm_add_epi16(v_pa128, v_pb128); - v_pa128 = _mm_abs_epi16(v_pa128); - v_pb128 = _mm_abs_epi16(v_pb128); - v_pc128 = _mm_abs_epi16(v_pc128); - v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128)); - v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128)); - v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); - v_x128 = _mm_unpacklo_epi8(v_x128, v_z128); - v_x128 = _mm_add_epi8(v_x128, v_p128); - v_a128 = v_x128; - v_c128 = v_b128; - v_x128 = _mm_packus_epi16(v_x128, v_x128); - wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128)))); - v_curr.ptr += 4; - v_prev.ptr += 4; - } - v_curr.len = 4; - v_prev.len = 4; - uint8_t* i_end1_curr = v_curr.ptr + (((i_slice_curr.len - (size_t)(v_curr.ptr - i_slice_curr.ptr)) / 4) * 4); - while (v_curr.ptr < i_end1_curr) { - v_b128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_prev.ptr))); - v_b128 = _mm_unpacklo_epi8(v_b128, v_z128); - v_pa128 = _mm_sub_epi16(v_b128, v_c128); - v_pb128 = _mm_sub_epi16(v_a128, v_c128); - v_pc128 = _mm_add_epi16(v_pa128, v_pb128); - v_pa128 = _mm_abs_epi16(v_pa128); - v_pb128 = _mm_abs_epi16(v_pb128); - v_pc128 = _mm_abs_epi16(v_pc128); - v_smallest128 = _mm_min_epi16(v_pc128, _mm_min_epi16(v_pb128, v_pa128)); - v_p128 = _mm_blendv_epi8(_mm_blendv_epi8(v_c128, v_b128, _mm_cmpeq_epi16(v_smallest128, v_pb128)), v_a128, _mm_cmpeq_epi16(v_smallest128, v_pa128)); - v_x128 = _mm_cvtsi32_si128((int32_t)(wuffs_base__peek_u32le__no_bounds_check(v_curr.ptr))); - v_x128 = _mm_unpacklo_epi8(v_x128, v_z128); - v_x128 = _mm_add_epi8(v_x128, v_p128); - v_a128 = v_x128; - v_c128 = v_b128; - v_x128 = _mm_packus_epi16(v_x128, v_x128); - wuffs_base__poke_u32le__no_bounds_check(v_curr.ptr, ((uint32_t)(_mm_cvtsi128_si32(v_x128)))); - v_curr.ptr += 4; - v_prev.ptr += 4; - } - v_curr.len = 0; - v_prev.len = 0; - } - return wuffs_base__make_empty_struct(); -} -#endif // defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) -// ‼ WUFFS MULTI-FILE SECTION -x86_sse42 - -// -------- func png.decoder.set_quirk - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_png__decoder__set_quirk( - wuffs_png__decoder* self, - uint32_t a_key, - uint64_t a_value) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - - if (a_key == 1) { - self->private_impl.f_ignore_checksum = (a_value > 0); - wuffs_zlib__decoder__set_quirk(&self->private_data.f_zlib, a_key, a_value); - return wuffs_base__make_status(NULL); - } - return wuffs_base__make_status(wuffs_base__error__unsupported_option); -} - -// -------- func png.decoder.decode_image_config - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_png__decoder__decode_image_config( - wuffs_png__decoder* self, - wuffs_base__image_config* a_dst, - wuffs_base__io_buffer* a_src) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - if (!a_src) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - if ((self->private_impl.active_coroutine != 0) && - (self->private_impl.active_coroutine != 1)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); - } - self->private_impl.active_coroutine = 0; - wuffs_base__status status = wuffs_base__make_status(NULL); - - wuffs_base__status v_status = wuffs_base__make_status(NULL); - - uint32_t coro_susp_point = self->private_impl.p_decode_image_config[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - while (true) { - { - wuffs_base__status t_0 = wuffs_png__decoder__do_decode_image_config(self, a_dst, a_src); - v_status = t_0; - } - if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { - status = wuffs_base__make_status(wuffs_png__error__truncated_input); - goto exit; - } - status = v_status; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); - } - - ok: - self->private_impl.p_decode_image_config[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0; - - goto exit; - exit: - if (wuffs_base__status__is_error(&status)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - } - return status; -} - -// -------- func png.decoder.do_decode_image_config - -static wuffs_base__status -wuffs_png__decoder__do_decode_image_config( - wuffs_png__decoder* self, - wuffs_base__image_config* a_dst, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint64_t v_magic = 0; - uint64_t v_mark = 0; - uint32_t v_checksum_have = 0; - uint32_t v_checksum_want = 0; - wuffs_base__status v_status = wuffs_base__make_status(NULL); - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config[0]; - if (coro_susp_point) { - v_checksum_have = self->private_data.s_do_decode_image_config[0].v_checksum_have; - } - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - if (self->private_impl.f_call_sequence != 0) { - status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence); - goto exit; - } else if ( ! self->private_impl.f_seen_ihdr) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - uint64_t t_0; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 8)) { - t_0 = wuffs_base__peek_u64le__no_bounds_check(iop_a_src); - iop_a_src += 8; - } else { - self->private_data.s_do_decode_image_config[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; - uint32_t num_bits_0 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_0; - if (num_bits_0 == 56) { - t_0 = ((uint64_t)(*scratch)); - break; - } - num_bits_0 += 8; - *scratch |= ((uint64_t)(num_bits_0)) << 56; - } - } - v_magic = t_0; - } - if (v_magic != 727905341920923785) { - status = wuffs_base__make_status(wuffs_png__error__bad_header); - goto exit; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); - uint64_t t_1; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 8)) { - t_1 = wuffs_base__peek_u64le__no_bounds_check(iop_a_src); - iop_a_src += 8; - } else { - self->private_data.s_do_decode_image_config[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; - uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1; - if (num_bits_1 == 56) { - t_1 = ((uint64_t)(*scratch)); - break; - } - num_bits_1 += 8; - *scratch |= ((uint64_t)(num_bits_1)) << 56; - } - } - v_magic = t_1; - } - if (v_magic != 5927942488114331648) { - if (v_magic == 5278895250759221248) { - status = wuffs_base__make_status(wuffs_png__error__unsupported_cgbi_extension); - goto exit; - } - status = wuffs_base__make_status(wuffs_png__error__bad_header); - goto exit; - } - self->private_impl.f_chunk_type_array[0] = 73; - self->private_impl.f_chunk_type_array[1] = 72; - self->private_impl.f_chunk_type_array[2] = 68; - self->private_impl.f_chunk_type_array[3] = 82; - wuffs_base__ignore_status(wuffs_crc32__ieee_hasher__initialize(&self->private_data.f_crc32, - sizeof (wuffs_crc32__ieee_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED)); - wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__make_slice_u8(self->private_impl.f_chunk_type_array, 4)); - while (true) { - v_mark = ((uint64_t)(iop_a_src - io0_a_src)); - { - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - wuffs_base__status t_2 = wuffs_png__decoder__decode_ihdr(self, a_src); - v_status = t_2; - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - } - if ( ! self->private_impl.f_ignore_checksum) { - v_checksum_have = wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__io__since(v_mark, ((uint64_t)(iop_a_src - io0_a_src)), io0_a_src)); - } - if (wuffs_base__status__is_ok(&v_status)) { - goto label__0__break; - } - status = v_status; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5); - } - label__0__break:; - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); - uint32_t t_3; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_3 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); - iop_a_src += 4; - } else { - self->private_data.s_do_decode_image_config[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; - uint32_t num_bits_3 = ((uint32_t)(*scratch & 0xFF)); - *scratch >>= 8; - *scratch <<= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_3); - if (num_bits_3 == 24) { - t_3 = ((uint32_t)(*scratch >> 32)); - break; - } - num_bits_3 += 8; - *scratch |= ((uint64_t)(num_bits_3)); - } - } - v_checksum_want = t_3; - } - if ( ! self->private_impl.f_ignore_checksum && (v_checksum_have != v_checksum_want)) { - status = wuffs_base__make_status(wuffs_png__error__bad_checksum); - goto exit; - } - self->private_impl.f_seen_ihdr = true; - } else if (self->private_impl.f_metadata_fourcc != 0) { - self->private_impl.f_call_sequence = 16; - status = wuffs_base__make_status(wuffs_base__note__metadata_reported); - goto ok; - } - label__1__continue:; - while (true) { - if (((uint64_t)(io2_a_src - iop_a_src)) < 8) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(8); - goto label__1__continue; - } - self->private_impl.f_chunk_length = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); - self->private_impl.f_chunk_type = ((uint32_t)((wuffs_base__peek_u64le__no_bounds_check(iop_a_src) >> 32))); - if (self->private_impl.f_chunk_type == 1413563465) { - if ( ! self->private_impl.f_seen_actl || self->private_impl.f_seen_fctl) { - goto label__1__break; - } - self->private_impl.f_seen_idat = true; - } else if (self->private_impl.f_chunk_type == 1413571686) { - if (self->private_impl.f_seen_idat && self->private_impl.f_seen_fctl) { - goto label__1__break; - } - status = wuffs_base__make_status(wuffs_png__error__bad_chunk); - goto exit; - } - iop_a_src += 8; - if ( ! self->private_impl.f_ignore_checksum && ((self->private_impl.f_chunk_type & 32) == 0)) { - self->private_impl.f_chunk_type_array[0] = ((uint8_t)(((self->private_impl.f_chunk_type >> 0) & 255))); - self->private_impl.f_chunk_type_array[1] = ((uint8_t)(((self->private_impl.f_chunk_type >> 8) & 255))); - self->private_impl.f_chunk_type_array[2] = ((uint8_t)(((self->private_impl.f_chunk_type >> 16) & 255))); - self->private_impl.f_chunk_type_array[3] = ((uint8_t)(((self->private_impl.f_chunk_type >> 24) & 255))); - wuffs_base__ignore_status(wuffs_crc32__ieee_hasher__initialize(&self->private_data.f_crc32, - sizeof (wuffs_crc32__ieee_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED)); - wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__make_slice_u8(self->private_impl.f_chunk_type_array, 4)); - } - while (true) { - v_mark = ((uint64_t)(iop_a_src - io0_a_src)); - { - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - wuffs_base__status t_4 = wuffs_png__decoder__decode_other_chunk(self, a_src, false); - v_status = t_4; - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - } - if ( ! self->private_impl.f_ignore_checksum && ((self->private_impl.f_chunk_type & 32) == 0)) { - v_checksum_have = wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__io__since(v_mark, ((uint64_t)(iop_a_src - io0_a_src)), io0_a_src)); - } - if (wuffs_base__status__is_ok(&v_status)) { - goto label__2__break; - } - status = v_status; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(9); - } - label__2__break:; - if (self->private_impl.f_metadata_fourcc != 0) { - self->private_impl.f_call_sequence = 16; - status = wuffs_base__make_status(wuffs_base__note__metadata_reported); - goto ok; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10); - uint32_t t_5; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_5 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); - iop_a_src += 4; - } else { - self->private_data.s_do_decode_image_config[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; - uint32_t num_bits_5 = ((uint32_t)(*scratch & 0xFF)); - *scratch >>= 8; - *scratch <<= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_5); - if (num_bits_5 == 24) { - t_5 = ((uint32_t)(*scratch >> 32)); - break; - } - num_bits_5 += 8; - *scratch |= ((uint64_t)(num_bits_5)); - } - } - v_checksum_want = t_5; - } - if ( ! self->private_impl.f_ignore_checksum && ((self->private_impl.f_chunk_type & 32) == 0) && (v_checksum_have != v_checksum_want)) { - status = wuffs_base__make_status(wuffs_png__error__bad_checksum); - goto exit; - } - } - label__1__break:; - if ((self->private_impl.f_color_type == 3) && ! self->private_impl.f_seen_plte) { - status = wuffs_base__make_status(wuffs_png__error__missing_palette); - goto exit; - } - self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))); - self->private_impl.f_first_config_io_position = self->private_impl.f_frame_config_io_position; - if (a_dst != NULL) { - wuffs_base__image_config__set( - a_dst, - self->private_impl.f_dst_pixfmt, - 0, - self->private_impl.f_width, - self->private_impl.f_height, - self->private_impl.f_first_config_io_position, - ((self->private_impl.f_color_type <= 3) && ! self->private_impl.f_seen_trns)); - } - if ( ! self->private_impl.f_seen_actl) { - self->private_impl.f_num_animation_frames_value = 1; - self->private_impl.f_first_rect_x0 = 0; - self->private_impl.f_first_rect_y0 = 0; - self->private_impl.f_first_rect_x1 = self->private_impl.f_width; - self->private_impl.f_first_rect_y1 = self->private_impl.f_height; - self->private_impl.f_first_duration = 0; - self->private_impl.f_first_disposal = 0; - self->private_impl.f_first_overwrite_instead_of_blend = false; - } - self->private_impl.f_call_sequence = 32; - - ok: - self->private_impl.p_do_decode_image_config[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_do_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_data.s_do_decode_image_config[0].v_checksum_have = v_checksum_have; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func png.decoder.decode_ihdr - -static wuffs_base__status -wuffs_png__decoder__decode_ihdr( - wuffs_png__decoder* self, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint32_t v_a32 = 0; - uint8_t v_a8 = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_decode_ihdr[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - uint32_t t_0; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_0 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); - iop_a_src += 4; - } else { - self->private_data.s_decode_ihdr[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_decode_ihdr[0].scratch; - uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFF)); - *scratch >>= 8; - *scratch <<= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0); - if (num_bits_0 == 24) { - t_0 = ((uint32_t)(*scratch >> 32)); - break; - } - num_bits_0 += 8; - *scratch |= ((uint64_t)(num_bits_0)); - } - } - v_a32 = t_0; - } - if ((v_a32 == 0) || (v_a32 > 2147483647)) { - status = wuffs_base__make_status(wuffs_png__error__bad_header); - goto exit; - } else if (v_a32 > 16777215) { - status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension); - goto exit; - } - self->private_impl.f_width = v_a32; - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); - uint32_t t_1; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_1 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); - iop_a_src += 4; - } else { - self->private_data.s_decode_ihdr[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_decode_ihdr[0].scratch; - uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFF)); - *scratch >>= 8; - *scratch <<= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1); - if (num_bits_1 == 24) { - t_1 = ((uint32_t)(*scratch >> 32)); - break; - } - num_bits_1 += 8; - *scratch |= ((uint64_t)(num_bits_1)); - } - } - v_a32 = t_1; - } - if ((v_a32 == 0) || (v_a32 > 2147483647)) { - status = wuffs_base__make_status(wuffs_png__error__bad_header); - goto exit; - } else if (v_a32 > 16777215) { - status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension); - goto exit; - } - self->private_impl.f_height = v_a32; - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_2 = *iop_a_src++; - v_a8 = t_2; - } - if (v_a8 > 16) { - status = wuffs_base__make_status(wuffs_png__error__bad_header); - goto exit; - } - self->private_impl.f_depth = v_a8; - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_3 = *iop_a_src++; - v_a8 = t_3; - } - if ((v_a8 == 1) || (v_a8 == 5) || (v_a8 > 6)) { - status = wuffs_base__make_status(wuffs_png__error__bad_header); - goto exit; - } - self->private_impl.f_color_type = v_a8; - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_4 = *iop_a_src++; - v_a8 = t_4; - } - if (v_a8 != 0) { - status = wuffs_base__make_status(wuffs_png__error__unsupported_png_compression_method); - goto exit; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_5 = *iop_a_src++; - v_a8 = t_5; - } - if (v_a8 != 0) { - status = wuffs_base__make_status(wuffs_png__error__bad_header); - goto exit; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_6 = *iop_a_src++; - v_a8 = t_6; - } - if (v_a8 == 0) { - self->private_impl.f_interlace_pass = 0; - } else if (v_a8 == 1) { - self->private_impl.f_interlace_pass = 1; - self->private_impl.choosy_filter_and_swizzle = ( - &wuffs_png__decoder__filter_and_swizzle_tricky); - } else { - status = wuffs_base__make_status(wuffs_png__error__bad_header); - goto exit; - } - self->private_impl.f_filter_distance = 0; - wuffs_png__decoder__assign_filter_distance(self); - if (self->private_impl.f_filter_distance == 0) { - status = wuffs_base__make_status(wuffs_png__error__bad_header); - goto exit; - } - self->private_impl.f_overall_workbuf_length = (((uint64_t)(self->private_impl.f_height)) * (1 + wuffs_png__decoder__calculate_bytes_per_row(self, self->private_impl.f_width))); - wuffs_png__decoder__choose_filter_implementations(self); - - goto ok; - ok: - self->private_impl.p_decode_ihdr[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_ihdr[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func png.decoder.assign_filter_distance - -static wuffs_base__empty_struct -wuffs_png__decoder__assign_filter_distance( - wuffs_png__decoder* self) { - if (self->private_impl.f_depth < 8) { - if ((self->private_impl.f_depth != 1) && (self->private_impl.f_depth != 2) && (self->private_impl.f_depth != 4)) { - return wuffs_base__make_empty_struct(); - } else if (self->private_impl.f_color_type == 0) { - self->private_impl.f_dst_pixfmt = 536870920; - self->private_impl.f_src_pixfmt = 536870920; - } else if (self->private_impl.f_color_type == 3) { - self->private_impl.f_dst_pixfmt = 2198077448; - self->private_impl.f_src_pixfmt = 2198077448; - } else { - return wuffs_base__make_empty_struct(); - } - self->private_impl.f_filter_distance = 1; - self->private_impl.choosy_filter_and_swizzle = ( - &wuffs_png__decoder__filter_and_swizzle_tricky); - } else if (self->private_impl.f_color_type == 0) { - if (self->private_impl.f_depth == 8) { - self->private_impl.f_dst_pixfmt = 536870920; - self->private_impl.f_src_pixfmt = 536870920; - self->private_impl.f_filter_distance = 1; - } else if (self->private_impl.f_depth == 16) { - if (self->private_impl.f_interlace_pass == 0) { - self->private_impl.f_dst_pixfmt = 536870923; - self->private_impl.f_src_pixfmt = 537919499; - } else { - self->private_impl.f_dst_pixfmt = 2164308923; - self->private_impl.f_src_pixfmt = 2164308923; - } - self->private_impl.f_filter_distance = 2; - } - } else if (self->private_impl.f_color_type == 2) { - if (self->private_impl.f_depth == 8) { - self->private_impl.f_dst_pixfmt = 2147485832; - self->private_impl.f_src_pixfmt = 2684356744; - self->private_impl.f_filter_distance = 3; - } else if (self->private_impl.f_depth == 16) { - self->private_impl.f_dst_pixfmt = 2164308923; - self->private_impl.f_src_pixfmt = 2164308923; - self->private_impl.f_filter_distance = 6; - self->private_impl.choosy_filter_and_swizzle = ( - &wuffs_png__decoder__filter_and_swizzle_tricky); - } - } else if (self->private_impl.f_color_type == 3) { - if (self->private_impl.f_depth == 8) { - self->private_impl.f_dst_pixfmt = 2198077448; - self->private_impl.f_src_pixfmt = 2198077448; - self->private_impl.f_filter_distance = 1; - } - } else if (self->private_impl.f_color_type == 4) { - if (self->private_impl.f_depth == 8) { - self->private_impl.f_dst_pixfmt = 2164295816; - self->private_impl.f_src_pixfmt = 2164295816; - self->private_impl.f_filter_distance = 2; - self->private_impl.choosy_filter_and_swizzle = ( - &wuffs_png__decoder__filter_and_swizzle_tricky); - } else if (self->private_impl.f_depth == 16) { - self->private_impl.f_dst_pixfmt = 2164308923; - self->private_impl.f_src_pixfmt = 2164308923; - self->private_impl.f_filter_distance = 4; - self->private_impl.choosy_filter_and_swizzle = ( - &wuffs_png__decoder__filter_and_swizzle_tricky); - } - } else if (self->private_impl.f_color_type == 6) { - if (self->private_impl.f_depth == 8) { - self->private_impl.f_dst_pixfmt = 2164295816; - self->private_impl.f_src_pixfmt = 2701166728; - self->private_impl.f_filter_distance = 4; - } else if (self->private_impl.f_depth == 16) { - self->private_impl.f_dst_pixfmt = 2164308923; - self->private_impl.f_src_pixfmt = 2164308923; - self->private_impl.f_filter_distance = 8; - self->private_impl.choosy_filter_and_swizzle = ( - &wuffs_png__decoder__filter_and_swizzle_tricky); - } - } - return wuffs_base__make_empty_struct(); -} - -// -------- func png.decoder.calculate_bytes_per_row - -static uint64_t -wuffs_png__decoder__calculate_bytes_per_row( - const wuffs_png__decoder* self, - uint32_t a_width) { - uint64_t v_bytes_per_channel = 0; - - if (self->private_impl.f_depth == 1) { - return ((uint64_t)(((a_width + 7) / 8))); - } else if (self->private_impl.f_depth == 2) { - return ((uint64_t)(((a_width + 3) / 4))); - } else if (self->private_impl.f_depth == 4) { - return ((uint64_t)(((a_width + 1) / 2))); - } - v_bytes_per_channel = ((uint64_t)((self->private_impl.f_depth >> 3))); - return (((uint64_t)(a_width)) * v_bytes_per_channel * ((uint64_t)(WUFFS_PNG__NUM_CHANNELS[self->private_impl.f_color_type]))); -} - -// -------- func png.decoder.choose_filter_implementations - -static wuffs_base__empty_struct -wuffs_png__decoder__choose_filter_implementations( - wuffs_png__decoder* self) { - if (self->private_impl.f_filter_distance == 3) { - self->private_impl.choosy_filter_1 = ( - &wuffs_png__decoder__filter_1_distance_3_fallback); - self->private_impl.choosy_filter_3 = ( - &wuffs_png__decoder__filter_3_distance_3_fallback); - self->private_impl.choosy_filter_4 = ( -#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) - wuffs_base__cpu_arch__have_arm_neon() ? &wuffs_png__decoder__filter_4_distance_3_arm_neon : -#endif -#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) - wuffs_base__cpu_arch__have_x86_sse42() ? &wuffs_png__decoder__filter_4_distance_3_x86_sse42 : -#endif - &wuffs_png__decoder__filter_4_distance_3_fallback); - } else if (self->private_impl.f_filter_distance == 4) { - self->private_impl.choosy_filter_1 = ( -#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) - wuffs_base__cpu_arch__have_arm_neon() ? &wuffs_png__decoder__filter_1_distance_4_arm_neon : -#endif -#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) - wuffs_base__cpu_arch__have_x86_sse42() ? &wuffs_png__decoder__filter_1_distance_4_x86_sse42 : -#endif - &wuffs_png__decoder__filter_1_distance_4_fallback); - self->private_impl.choosy_filter_3 = ( -#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) - wuffs_base__cpu_arch__have_arm_neon() ? &wuffs_png__decoder__filter_3_distance_4_arm_neon : -#endif -#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) - wuffs_base__cpu_arch__have_x86_sse42() ? &wuffs_png__decoder__filter_3_distance_4_x86_sse42 : -#endif - &wuffs_png__decoder__filter_3_distance_4_fallback); - self->private_impl.choosy_filter_4 = ( -#if defined(WUFFS_BASE__CPU_ARCH__ARM_NEON) - wuffs_base__cpu_arch__have_arm_neon() ? &wuffs_png__decoder__filter_4_distance_4_arm_neon : -#endif -#if defined(WUFFS_BASE__CPU_ARCH__X86_FAMILY) - wuffs_base__cpu_arch__have_x86_sse42() ? &wuffs_png__decoder__filter_4_distance_4_x86_sse42 : -#endif - &wuffs_png__decoder__filter_4_distance_4_fallback); - } - return wuffs_base__make_empty_struct(); -} - -// -------- func png.decoder.decode_other_chunk - -static wuffs_base__status -wuffs_png__decoder__decode_other_chunk( - wuffs_png__decoder* self, - wuffs_base__io_buffer* a_src, - bool a_framy) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_decode_other_chunk[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - if ((self->private_impl.f_chunk_type == 1163152464) && ! a_framy) { - if (self->private_impl.f_seen_plte) { - status = wuffs_base__make_status(wuffs_png__error__bad_chunk); - goto exit; - } else if (self->private_impl.f_color_type == 3) { - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - status = wuffs_png__decoder__decode_plte(self, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - } else if ((self->private_impl.f_color_type == 2) || (self->private_impl.f_color_type == 6)) { - } else { - status = wuffs_base__make_status(wuffs_png__error__bad_chunk); - goto exit; - } - self->private_impl.f_seen_plte = true; - } else if ((self->private_impl.f_chunk_type & 32) == 0) { - if (self->private_impl.f_chunk_type != 1413563465) { - status = wuffs_base__make_status(wuffs_png__error__bad_chunk); - goto exit; - } - } - if (self->private_impl.f_chunk_type == 1716082789) { - if (self->private_impl.f_report_metadata_exif) { - if (self->private_impl.f_seen_exif) { - status = wuffs_base__make_status(wuffs_png__error__bad_chunk); - goto exit; - } - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - status = wuffs_png__decoder__decode_exif(self, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - self->private_impl.f_seen_exif = true; - } - } else if ((self->private_impl.f_chunk_type == 1951945833) || (self->private_impl.f_chunk_type == 1951942004) || (self->private_impl.f_chunk_type == 1951945850)) { - if (self->private_impl.f_report_metadata_kvp) { - self->private_impl.f_metadata_flavor = 4; - self->private_impl.f_metadata_fourcc = 1263947851; - self->private_impl.f_metadata_x = 0; - self->private_impl.f_metadata_y = 0; - self->private_impl.f_metadata_z = 0; - } - } else if ( ! a_framy) { - if (self->private_impl.f_chunk_type == 1280598881) { - if (self->private_impl.f_seen_actl) { - status = wuffs_base__make_status(wuffs_png__error__bad_chunk); - goto exit; - } - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); - status = wuffs_png__decoder__decode_actl(self, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - self->private_impl.f_seen_actl = true; - } else if (self->private_impl.f_chunk_type == 1297238115) { - if (self->private_impl.f_report_metadata_chrm) { - if (self->private_impl.f_seen_chrm) { - status = wuffs_base__make_status(wuffs_png__error__bad_chunk); - goto exit; - } - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); - status = wuffs_png__decoder__decode_chrm(self, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - self->private_impl.f_seen_chrm = true; - } - } else if (self->private_impl.f_chunk_type == 1280598886) { - if (self->private_impl.f_seen_fctl) { - status = wuffs_base__make_status(wuffs_png__error__bad_chunk); - goto exit; - } - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); - status = wuffs_png__decoder__decode_fctl(self, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - self->private_impl.f_seen_fctl = true; - } else if (self->private_impl.f_chunk_type == 1095582055) { - if (self->private_impl.f_report_metadata_gama) { - if (self->private_impl.f_seen_gama) { - status = wuffs_base__make_status(wuffs_png__error__bad_chunk); - goto exit; - } - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); - status = wuffs_png__decoder__decode_gama(self, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - self->private_impl.f_seen_gama = true; - } - } else if (self->private_impl.f_chunk_type == 1346585449) { - if (self->private_impl.f_report_metadata_iccp) { - if (self->private_impl.f_seen_iccp) { - status = wuffs_base__make_status(wuffs_png__error__bad_chunk); - goto exit; - } - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7); - status = wuffs_png__decoder__decode_iccp(self, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - self->private_impl.f_seen_iccp = true; - } - } else if (self->private_impl.f_chunk_type == 1111970419) { - if (self->private_impl.f_report_metadata_srgb) { - if (self->private_impl.f_seen_srgb) { - status = wuffs_base__make_status(wuffs_png__error__bad_chunk); - goto exit; - } - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8); - status = wuffs_png__decoder__decode_srgb(self, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - self->private_impl.f_seen_srgb = true; - } - } else if (self->private_impl.f_chunk_type == 1397641844) { - if (self->private_impl.f_seen_trns || (self->private_impl.f_color_type > 3) || ((self->private_impl.f_color_type == 3) && ! self->private_impl.f_seen_plte)) { - status = wuffs_base__make_status(wuffs_png__error__bad_chunk); - goto exit; - } - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9); - status = wuffs_png__decoder__decode_trns(self, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - self->private_impl.f_seen_trns = true; - } - } - if (self->private_impl.f_metadata_fourcc == 0) { - self->private_data.s_decode_other_chunk[0].scratch = self->private_impl.f_chunk_length; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10); - if (self->private_data.s_decode_other_chunk[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { - self->private_data.s_decode_other_chunk[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); - iop_a_src = io2_a_src; - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - iop_a_src += self->private_data.s_decode_other_chunk[0].scratch; - } - - goto ok; - ok: - self->private_impl.p_decode_other_chunk[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_other_chunk[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func png.decoder.decode_actl - -static wuffs_base__status -wuffs_png__decoder__decode_actl( - wuffs_png__decoder* self, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_decode_actl[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - if (self->private_impl.f_chunk_length != 8) { - status = wuffs_base__make_status(wuffs_png__error__bad_chunk); - goto exit; - } else if (self->private_impl.f_interlace_pass > 0) { - status = wuffs_base__make_status(wuffs_png__error__unsupported_png_file); - goto exit; - } - self->private_impl.f_chunk_length = 0; - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - uint32_t t_0; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_0 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); - iop_a_src += 4; - } else { - self->private_data.s_decode_actl[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_decode_actl[0].scratch; - uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFF)); - *scratch >>= 8; - *scratch <<= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0); - if (num_bits_0 == 24) { - t_0 = ((uint32_t)(*scratch >> 32)); - break; - } - num_bits_0 += 8; - *scratch |= ((uint64_t)(num_bits_0)); - } - } - self->private_impl.f_num_animation_frames_value = t_0; - } - if (self->private_impl.f_num_animation_frames_value == 0) { - status = wuffs_base__make_status(wuffs_png__error__bad_chunk); - goto exit; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); - uint32_t t_1; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_1 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); - iop_a_src += 4; - } else { - self->private_data.s_decode_actl[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_decode_actl[0].scratch; - uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFF)); - *scratch >>= 8; - *scratch <<= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1); - if (num_bits_1 == 24) { - t_1 = ((uint32_t)(*scratch >> 32)); - break; - } - num_bits_1 += 8; - *scratch |= ((uint64_t)(num_bits_1)); - } - } - self->private_impl.f_num_animation_loops_value = t_1; - } - - goto ok; - ok: - self->private_impl.p_decode_actl[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_actl[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func png.decoder.decode_chrm - -static wuffs_base__status -wuffs_png__decoder__decode_chrm( - wuffs_png__decoder* self, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint64_t v_u = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_decode_chrm[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - if (self->private_impl.f_chunk_length != 32) { - status = wuffs_base__make_status(wuffs_png__error__bad_chunk); - goto exit; - } - self->private_impl.f_chunk_length = 0; - self->private_impl.f_metadata_flavor = 5; - self->private_impl.f_metadata_fourcc = 1128813133; - self->private_impl.f_metadata_x = 0; - self->private_impl.f_metadata_y = 0; - self->private_impl.f_metadata_z = 0; - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - uint64_t t_0; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_0 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src))); - iop_a_src += 4; - } else { - self->private_data.s_decode_chrm[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_decode_chrm[0].scratch; - uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFF)); - *scratch >>= 8; - *scratch <<= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0); - if (num_bits_0 == 24) { - t_0 = ((uint64_t)(*scratch >> 32)); - break; - } - num_bits_0 += 8; - *scratch |= ((uint64_t)(num_bits_0)); - } - } - v_u = t_0; - } - self->private_impl.f_metadata_x |= ((16777215 & v_u) << 0); - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); - uint64_t t_1; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_1 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src))); - iop_a_src += 4; - } else { - self->private_data.s_decode_chrm[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_decode_chrm[0].scratch; - uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFF)); - *scratch >>= 8; - *scratch <<= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1); - if (num_bits_1 == 24) { - t_1 = ((uint64_t)(*scratch >> 32)); - break; - } - num_bits_1 += 8; - *scratch |= ((uint64_t)(num_bits_1)); - } - } - v_u = t_1; - } - self->private_impl.f_metadata_x |= ((16777215 & v_u) << 24); - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); - uint64_t t_2; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_2 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src))); - iop_a_src += 4; - } else { - self->private_data.s_decode_chrm[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_decode_chrm[0].scratch; - uint32_t num_bits_2 = ((uint32_t)(*scratch & 0xFF)); - *scratch >>= 8; - *scratch <<= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_2); - if (num_bits_2 == 24) { - t_2 = ((uint64_t)(*scratch >> 32)); - break; - } - num_bits_2 += 8; - *scratch |= ((uint64_t)(num_bits_2)); - } - } - v_u = t_2; - } - self->private_impl.f_metadata_x |= ((uint64_t)((16777215 & v_u) << 48)); - self->private_impl.f_metadata_y |= ((16777215 & v_u) >> 16); - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7); - uint64_t t_3; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_3 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src))); - iop_a_src += 4; - } else { - self->private_data.s_decode_chrm[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_decode_chrm[0].scratch; - uint32_t num_bits_3 = ((uint32_t)(*scratch & 0xFF)); - *scratch >>= 8; - *scratch <<= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_3); - if (num_bits_3 == 24) { - t_3 = ((uint64_t)(*scratch >> 32)); - break; - } - num_bits_3 += 8; - *scratch |= ((uint64_t)(num_bits_3)); - } - } - v_u = t_3; - } - self->private_impl.f_metadata_y |= ((16777215 & v_u) << 8); - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9); - uint64_t t_4; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_4 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src))); - iop_a_src += 4; - } else { - self->private_data.s_decode_chrm[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_decode_chrm[0].scratch; - uint32_t num_bits_4 = ((uint32_t)(*scratch & 0xFF)); - *scratch >>= 8; - *scratch <<= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_4); - if (num_bits_4 == 24) { - t_4 = ((uint64_t)(*scratch >> 32)); - break; - } - num_bits_4 += 8; - *scratch |= ((uint64_t)(num_bits_4)); - } - } - v_u = t_4; - } - self->private_impl.f_metadata_y |= ((16777215 & v_u) << 32); - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11); - uint64_t t_5; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_5 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src))); - iop_a_src += 4; - } else { - self->private_data.s_decode_chrm[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_decode_chrm[0].scratch; - uint32_t num_bits_5 = ((uint32_t)(*scratch & 0xFF)); - *scratch >>= 8; - *scratch <<= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_5); - if (num_bits_5 == 24) { - t_5 = ((uint64_t)(*scratch >> 32)); - break; - } - num_bits_5 += 8; - *scratch |= ((uint64_t)(num_bits_5)); - } - } - v_u = t_5; - } - self->private_impl.f_metadata_y |= ((uint64_t)((16777215 & v_u) << 56)); - self->private_impl.f_metadata_z |= ((16777215 & v_u) >> 8); - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(13); - uint64_t t_6; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_6 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src))); - iop_a_src += 4; - } else { - self->private_data.s_decode_chrm[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(14); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_decode_chrm[0].scratch; - uint32_t num_bits_6 = ((uint32_t)(*scratch & 0xFF)); - *scratch >>= 8; - *scratch <<= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_6); - if (num_bits_6 == 24) { - t_6 = ((uint64_t)(*scratch >> 32)); - break; - } - num_bits_6 += 8; - *scratch |= ((uint64_t)(num_bits_6)); - } - } - v_u = t_6; - } - self->private_impl.f_metadata_z |= ((16777215 & v_u) << 16); - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(15); - uint64_t t_7; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_7 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src))); - iop_a_src += 4; - } else { - self->private_data.s_decode_chrm[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_decode_chrm[0].scratch; - uint32_t num_bits_7 = ((uint32_t)(*scratch & 0xFF)); - *scratch >>= 8; - *scratch <<= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_7); - if (num_bits_7 == 24) { - t_7 = ((uint64_t)(*scratch >> 32)); - break; - } - num_bits_7 += 8; - *scratch |= ((uint64_t)(num_bits_7)); - } - } - v_u = t_7; - } - self->private_impl.f_metadata_z |= ((16777215 & v_u) << 40); - - goto ok; - ok: - self->private_impl.p_decode_chrm[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_chrm[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func png.decoder.decode_exif - -static wuffs_base__status -wuffs_png__decoder__decode_exif( - wuffs_png__decoder* self, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - if (self->private_impl.f_chunk_length < 4) { - status = wuffs_base__make_status(wuffs_png__error__bad_chunk); - goto exit; - } - self->private_impl.f_metadata_flavor = 3; - self->private_impl.f_metadata_fourcc = 1163413830; - self->private_impl.f_metadata_x = 0; - self->private_impl.f_metadata_y = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))); - self->private_impl.f_metadata_z = wuffs_base__u64__sat_add(self->private_impl.f_metadata_y, ((uint64_t)(self->private_impl.f_chunk_length))); - self->private_impl.f_chunk_length = 0; - - goto ok; - ok: - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func png.decoder.decode_fctl - -static wuffs_base__status -wuffs_png__decoder__decode_fctl( - wuffs_png__decoder* self, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint32_t v_x0 = 0; - uint32_t v_y0 = 0; - uint32_t v_x1 = 0; - uint32_t v_y1 = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_decode_fctl[0]; - if (coro_susp_point) { - v_x0 = self->private_data.s_decode_fctl[0].v_x0; - v_x1 = self->private_data.s_decode_fctl[0].v_x1; - v_y1 = self->private_data.s_decode_fctl[0].v_y1; - } - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - if (self->private_impl.f_chunk_length != 26) { - status = wuffs_base__make_status(wuffs_png__error__bad_chunk); - goto exit; - } - self->private_impl.f_chunk_length = 0; - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - uint32_t t_0; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_0 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); - iop_a_src += 4; - } else { - self->private_data.s_decode_fctl[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_decode_fctl[0].scratch; - uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFF)); - *scratch >>= 8; - *scratch <<= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0); - if (num_bits_0 == 24) { - t_0 = ((uint32_t)(*scratch >> 32)); - break; - } - num_bits_0 += 8; - *scratch |= ((uint64_t)(num_bits_0)); - } - } - v_x0 = t_0; - } - if (v_x0 != self->private_impl.f_next_animation_seq_num) { - status = wuffs_base__make_status(wuffs_png__error__bad_animation_sequence_number); - goto exit; - } else if (self->private_impl.f_next_animation_seq_num >= 4294967295) { - status = wuffs_base__make_status(wuffs_png__error__unsupported_png_file); - goto exit; - } - self->private_impl.f_next_animation_seq_num += 1; - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); - uint32_t t_1; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_1 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); - iop_a_src += 4; - } else { - self->private_data.s_decode_fctl[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_decode_fctl[0].scratch; - uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFF)); - *scratch >>= 8; - *scratch <<= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1); - if (num_bits_1 == 24) { - t_1 = ((uint32_t)(*scratch >> 32)); - break; - } - num_bits_1 += 8; - *scratch |= ((uint64_t)(num_bits_1)); - } - } - v_x1 = t_1; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); - uint32_t t_2; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_2 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); - iop_a_src += 4; - } else { - self->private_data.s_decode_fctl[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_decode_fctl[0].scratch; - uint32_t num_bits_2 = ((uint32_t)(*scratch & 0xFF)); - *scratch >>= 8; - *scratch <<= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_2); - if (num_bits_2 == 24) { - t_2 = ((uint32_t)(*scratch >> 32)); - break; - } - num_bits_2 += 8; - *scratch |= ((uint64_t)(num_bits_2)); - } - } - v_y1 = t_2; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7); - uint32_t t_3; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_3 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); - iop_a_src += 4; - } else { - self->private_data.s_decode_fctl[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_decode_fctl[0].scratch; - uint32_t num_bits_3 = ((uint32_t)(*scratch & 0xFF)); - *scratch >>= 8; - *scratch <<= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_3); - if (num_bits_3 == 24) { - t_3 = ((uint32_t)(*scratch >> 32)); - break; - } - num_bits_3 += 8; - *scratch |= ((uint64_t)(num_bits_3)); - } - } - v_x0 = t_3; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9); - uint32_t t_4; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_4 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); - iop_a_src += 4; - } else { - self->private_data.s_decode_fctl[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_decode_fctl[0].scratch; - uint32_t num_bits_4 = ((uint32_t)(*scratch & 0xFF)); - *scratch >>= 8; - *scratch <<= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_4); - if (num_bits_4 == 24) { - t_4 = ((uint32_t)(*scratch >> 32)); - break; - } - num_bits_4 += 8; - *scratch |= ((uint64_t)(num_bits_4)); - } - } - v_y0 = t_4; - } - v_x1 += v_x0; - v_y1 += v_y0; - if ((v_x0 >= v_x1) || - (v_x0 > self->private_impl.f_width) || - (v_x1 > self->private_impl.f_width) || - (v_y0 >= v_y1) || - (v_y0 > self->private_impl.f_height) || - (v_y1 > self->private_impl.f_height)) { - status = wuffs_base__make_status(wuffs_png__error__bad_chunk); - goto exit; - } - self->private_impl.f_frame_rect_x0 = v_x0; - self->private_impl.f_frame_rect_y0 = v_y0; - self->private_impl.f_frame_rect_x1 = v_x1; - self->private_impl.f_frame_rect_y1 = v_y1; - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11); - uint32_t t_5; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { - t_5 = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src))); - iop_a_src += 2; - } else { - self->private_data.s_decode_fctl[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_decode_fctl[0].scratch; - uint32_t num_bits_5 = ((uint32_t)(*scratch & 0xFF)); - *scratch >>= 8; - *scratch <<= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_5); - if (num_bits_5 == 8) { - t_5 = ((uint32_t)(*scratch >> 48)); - break; - } - num_bits_5 += 8; - *scratch |= ((uint64_t)(num_bits_5)); - } - } - v_x0 = t_5; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(13); - uint32_t t_6; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { - t_6 = ((uint32_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src))); - iop_a_src += 2; - } else { - self->private_data.s_decode_fctl[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(14); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_decode_fctl[0].scratch; - uint32_t num_bits_6 = ((uint32_t)(*scratch & 0xFF)); - *scratch >>= 8; - *scratch <<= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_6); - if (num_bits_6 == 8) { - t_6 = ((uint32_t)(*scratch >> 48)); - break; - } - num_bits_6 += 8; - *scratch |= ((uint64_t)(num_bits_6)); - } - } - v_x1 = t_6; - } - if (v_x1 <= 0) { - self->private_impl.f_frame_duration = (((uint64_t)(v_x0)) * 7056000); - } else { - self->private_impl.f_frame_duration = ((((uint64_t)(v_x0)) * 705600000) / ((uint64_t)(v_x1))); - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(15); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint32_t t_7 = *iop_a_src++; - v_x0 = t_7; - } - if (v_x0 == 0) { - self->private_impl.f_frame_disposal = 0; - } else if (v_x0 == 1) { - self->private_impl.f_frame_disposal = 1; - } else if (v_x0 == 2) { - self->private_impl.f_frame_disposal = 2; - } else { - status = wuffs_base__make_status(wuffs_png__error__bad_chunk); - goto exit; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint32_t t_8 = *iop_a_src++; - v_x0 = t_8; - } - if (v_x0 == 0) { - self->private_impl.f_frame_overwrite_instead_of_blend = true; - } else if (v_x0 == 1) { - self->private_impl.f_frame_overwrite_instead_of_blend = false; - } else { - status = wuffs_base__make_status(wuffs_png__error__bad_chunk); - goto exit; - } - if (self->private_impl.f_num_decoded_frame_configs_value == 0) { - self->private_impl.f_first_rect_x0 = self->private_impl.f_frame_rect_x0; - self->private_impl.f_first_rect_y0 = self->private_impl.f_frame_rect_y0; - self->private_impl.f_first_rect_x1 = self->private_impl.f_frame_rect_x1; - self->private_impl.f_first_rect_y1 = self->private_impl.f_frame_rect_y1; - self->private_impl.f_first_duration = self->private_impl.f_frame_duration; - self->private_impl.f_first_disposal = self->private_impl.f_frame_disposal; - self->private_impl.f_first_overwrite_instead_of_blend = self->private_impl.f_frame_overwrite_instead_of_blend; - } - - goto ok; - ok: - self->private_impl.p_decode_fctl[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_fctl[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_data.s_decode_fctl[0].v_x0 = v_x0; - self->private_data.s_decode_fctl[0].v_x1 = v_x1; - self->private_data.s_decode_fctl[0].v_y1 = v_y1; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func png.decoder.decode_gama - -static wuffs_base__status -wuffs_png__decoder__decode_gama( - wuffs_png__decoder* self, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_decode_gama[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - if (self->private_impl.f_chunk_length != 4) { - status = wuffs_base__make_status(wuffs_png__error__bad_chunk); - goto exit; - } - self->private_impl.f_chunk_length = 0; - self->private_impl.f_metadata_flavor = 5; - self->private_impl.f_metadata_fourcc = 1195461953; - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - uint64_t t_0; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_0 = ((uint64_t)(wuffs_base__peek_u32be__no_bounds_check(iop_a_src))); - iop_a_src += 4; - } else { - self->private_data.s_decode_gama[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_decode_gama[0].scratch; - uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFF)); - *scratch >>= 8; - *scratch <<= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0); - if (num_bits_0 == 24) { - t_0 = ((uint64_t)(*scratch >> 32)); - break; - } - num_bits_0 += 8; - *scratch |= ((uint64_t)(num_bits_0)); - } - } - self->private_impl.f_metadata_x = t_0; - } - self->private_impl.f_metadata_y = 0; - self->private_impl.f_metadata_z = 0; - - goto ok; - ok: - self->private_impl.p_decode_gama[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_gama[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func png.decoder.decode_iccp - -static wuffs_base__status -wuffs_png__decoder__decode_iccp( - wuffs_png__decoder* self, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint8_t v_c = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_decode_iccp[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - while (true) { - if (self->private_impl.f_chunk_length <= 0) { - status = wuffs_base__make_status(wuffs_png__error__bad_chunk); - goto exit; - } - self->private_impl.f_chunk_length -= 1; - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_0 = *iop_a_src++; - v_c = t_0; - } - if (v_c == 0) { - goto label__0__break; - } - } - label__0__break:; - if (self->private_impl.f_chunk_length <= 0) { - status = wuffs_base__make_status(wuffs_png__error__bad_chunk); - goto exit; - } - self->private_impl.f_chunk_length -= 1; - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_1 = *iop_a_src++; - v_c = t_1; - } - if (v_c != 0) { - status = wuffs_base__make_status(wuffs_png__error__unsupported_png_compression_method); - goto exit; - } - self->private_impl.f_metadata_is_zlib_compressed = true; - self->private_impl.f_metadata_flavor = 4; - self->private_impl.f_metadata_fourcc = 1229144912; - self->private_impl.f_metadata_x = 0; - self->private_impl.f_metadata_y = 0; - self->private_impl.f_metadata_z = 0; - - goto ok; - ok: - self->private_impl.p_decode_iccp[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_iccp[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func png.decoder.decode_plte - -static wuffs_base__status -wuffs_png__decoder__decode_plte( - wuffs_png__decoder* self, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint32_t v_num_entries = 0; - uint32_t v_i = 0; - uint32_t v_argb = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_decode_plte[0]; - if (coro_susp_point) { - v_num_entries = self->private_data.s_decode_plte[0].v_num_entries; - v_i = self->private_data.s_decode_plte[0].v_i; - } - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - if ((self->private_impl.f_chunk_length > 768) || ((self->private_impl.f_chunk_length % 3) != 0)) { - status = wuffs_base__make_status(wuffs_png__error__bad_chunk); - goto exit; - } - v_num_entries = (((uint32_t)(self->private_impl.f_chunk_length)) / 3); - self->private_impl.f_chunk_length = 0; - while (v_i < v_num_entries) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - uint32_t t_0; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 3)) { - t_0 = ((uint32_t)(wuffs_base__peek_u24be__no_bounds_check(iop_a_src))); - iop_a_src += 3; - } else { - self->private_data.s_decode_plte[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_decode_plte[0].scratch; - uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFF)); - *scratch >>= 8; - *scratch <<= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0); - if (num_bits_0 == 16) { - t_0 = ((uint32_t)(*scratch >> 40)); - break; - } - num_bits_0 += 8; - *scratch |= ((uint64_t)(num_bits_0)); - } - } - v_argb = t_0; - } - v_argb |= 4278190080; - self->private_data.f_src_palette[((4 * v_i) + 0)] = ((uint8_t)(((v_argb >> 0) & 255))); - self->private_data.f_src_palette[((4 * v_i) + 1)] = ((uint8_t)(((v_argb >> 8) & 255))); - self->private_data.f_src_palette[((4 * v_i) + 2)] = ((uint8_t)(((v_argb >> 16) & 255))); - self->private_data.f_src_palette[((4 * v_i) + 3)] = ((uint8_t)(((v_argb >> 24) & 255))); - v_i += 1; - } - while (v_i < 256) { - self->private_data.f_src_palette[((4 * v_i) + 0)] = 0; - self->private_data.f_src_palette[((4 * v_i) + 1)] = 0; - self->private_data.f_src_palette[((4 * v_i) + 2)] = 0; - self->private_data.f_src_palette[((4 * v_i) + 3)] = 255; - v_i += 1; - } - - goto ok; - ok: - self->private_impl.p_decode_plte[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_plte[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_data.s_decode_plte[0].v_num_entries = v_num_entries; - self->private_data.s_decode_plte[0].v_i = v_i; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func png.decoder.decode_srgb - -static wuffs_base__status -wuffs_png__decoder__decode_srgb( - wuffs_png__decoder* self, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_decode_srgb[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - if (self->private_impl.f_chunk_length != 1) { - status = wuffs_base__make_status(wuffs_png__error__bad_chunk); - goto exit; - } - self->private_impl.f_chunk_length = 0; - self->private_impl.f_metadata_flavor = 5; - self->private_impl.f_metadata_fourcc = 1397901122; - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t t_0 = *iop_a_src++; - self->private_impl.f_metadata_x = t_0; - } - self->private_impl.f_metadata_y = 0; - self->private_impl.f_metadata_z = 0; - - goto ok; - ok: - self->private_impl.p_decode_srgb[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_srgb[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func png.decoder.decode_trns - -static wuffs_base__status -wuffs_png__decoder__decode_trns( - wuffs_png__decoder* self, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint32_t v_i = 0; - uint32_t v_n = 0; - uint64_t v_u = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_decode_trns[0]; - if (coro_susp_point) { - v_i = self->private_data.s_decode_trns[0].v_i; - v_n = self->private_data.s_decode_trns[0].v_n; - } - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - if (self->private_impl.f_color_type == 0) { - self->private_impl.choosy_filter_and_swizzle = ( - &wuffs_png__decoder__filter_and_swizzle_tricky); - if (self->private_impl.f_depth <= 8) { - self->private_impl.f_dst_pixfmt = 2164295816; - self->private_impl.f_src_pixfmt = 2164295816; - } else { - self->private_impl.f_dst_pixfmt = 2164308923; - self->private_impl.f_src_pixfmt = 2164308923; - } - if (self->private_impl.f_chunk_length != 2) { - status = wuffs_base__make_status(wuffs_png__error__bad_chunk); - goto exit; - } - self->private_impl.f_chunk_length = 0; - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - uint64_t t_0; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { - t_0 = ((uint64_t)(wuffs_base__peek_u16be__no_bounds_check(iop_a_src))); - iop_a_src += 2; - } else { - self->private_data.s_decode_trns[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_decode_trns[0].scratch; - uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFF)); - *scratch >>= 8; - *scratch <<= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0); - if (num_bits_0 == 8) { - t_0 = ((uint64_t)(*scratch >> 48)); - break; - } - num_bits_0 += 8; - *scratch |= ((uint64_t)(num_bits_0)); - } - } - v_u = t_0; - } - if (self->private_impl.f_depth <= 1) { - self->private_impl.f_remap_transparency = (((v_u & 1) * 16777215) | 4278190080); - } else if (self->private_impl.f_depth <= 2) { - self->private_impl.f_remap_transparency = (((v_u & 3) * 5592405) | 4278190080); - } else if (self->private_impl.f_depth <= 4) { - self->private_impl.f_remap_transparency = (((v_u & 15) * 1118481) | 4278190080); - } else if (self->private_impl.f_depth <= 8) { - self->private_impl.f_remap_transparency = (((v_u & 255) * 65793) | 4278190080); - } else { - self->private_impl.f_remap_transparency = ((v_u * 4295032833) | 18446462598732840960u); - } - } else if (self->private_impl.f_color_type == 2) { - self->private_impl.choosy_filter_and_swizzle = ( - &wuffs_png__decoder__filter_and_swizzle_tricky); - if (self->private_impl.f_depth <= 8) { - self->private_impl.f_dst_pixfmt = 2164295816; - self->private_impl.f_src_pixfmt = 2164295816; - } else { - self->private_impl.f_dst_pixfmt = 2164308923; - self->private_impl.f_src_pixfmt = 2164308923; - } - if (self->private_impl.f_chunk_length != 6) { - status = wuffs_base__make_status(wuffs_png__error__bad_chunk); - goto exit; - } - self->private_impl.f_chunk_length = 0; - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); - uint64_t t_1; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 6)) { - t_1 = ((uint64_t)(wuffs_base__peek_u48be__no_bounds_check(iop_a_src))); - iop_a_src += 6; - } else { - self->private_data.s_decode_trns[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_decode_trns[0].scratch; - uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFF)); - *scratch >>= 8; - *scratch <<= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1); - if (num_bits_1 == 40) { - t_1 = ((uint64_t)(*scratch >> 16)); - break; - } - num_bits_1 += 8; - *scratch |= ((uint64_t)(num_bits_1)); - } - } - v_u = t_1; - } - if (self->private_impl.f_depth <= 8) { - self->private_impl.f_remap_transparency = ((255 & (v_u >> 0)) | - (65280 & (v_u >> 8)) | - (16711680 & (v_u >> 16)) | - 4278190080); - } else { - self->private_impl.f_remap_transparency = (v_u | 18446462598732840960u); - } - } else if (self->private_impl.f_color_type == 3) { - self->private_impl.f_dst_pixfmt = 2164523016; - self->private_impl.f_src_pixfmt = 2164523016; - if (self->private_impl.f_chunk_length > 256) { - status = wuffs_base__make_status(wuffs_png__error__bad_chunk); - goto exit; - } - v_n = ((uint32_t)(self->private_impl.f_chunk_length)); - self->private_impl.f_chunk_length = 0; - while (v_i < v_n) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_2 = *iop_a_src++; - self->private_data.f_src_palette[((4 * v_i) + 3)] = t_2; - } - v_i += 1; - } - } else { - status = wuffs_base__make_status(wuffs_png__error__bad_chunk); - goto exit; - } - - goto ok; - ok: - self->private_impl.p_decode_trns[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_trns[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_data.s_decode_trns[0].v_i = v_i; - self->private_data.s_decode_trns[0].v_n = v_n; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func png.decoder.decode_frame_config - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_png__decoder__decode_frame_config( - wuffs_png__decoder* self, - wuffs_base__frame_config* a_dst, - wuffs_base__io_buffer* a_src) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - if (!a_src) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - if ((self->private_impl.active_coroutine != 0) && - (self->private_impl.active_coroutine != 2)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); - } - self->private_impl.active_coroutine = 0; - wuffs_base__status status = wuffs_base__make_status(NULL); - - wuffs_base__status v_status = wuffs_base__make_status(NULL); - - uint32_t coro_susp_point = self->private_impl.p_decode_frame_config[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - while (true) { - { - wuffs_base__status t_0 = wuffs_png__decoder__do_decode_frame_config(self, a_dst, a_src); - v_status = t_0; - } - if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { - status = wuffs_base__make_status(wuffs_png__error__truncated_input); - goto exit; - } - status = v_status; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); - } - - ok: - self->private_impl.p_decode_frame_config[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0; - - goto exit; - exit: - if (wuffs_base__status__is_error(&status)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - } - return status; -} - -// -------- func png.decoder.do_decode_frame_config - -static wuffs_base__status -wuffs_png__decoder__do_decode_frame_config( - wuffs_png__decoder* self, - wuffs_base__frame_config* a_dst, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint32_t v_checksum_have = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - if ((self->private_impl.f_call_sequence & 16) != 0) { - status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence); - goto exit; - } else if (self->private_impl.f_call_sequence == 32) { - } else if (self->private_impl.f_call_sequence < 32) { - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - status = wuffs_png__decoder__do_decode_image_config(self, NULL, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - } else if (self->private_impl.f_call_sequence == 40) { - if (self->private_impl.f_frame_config_io_position != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) { - status = wuffs_base__make_status(wuffs_base__error__bad_restart); - goto exit; - } - } else if (self->private_impl.f_call_sequence == 64) { - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - status = wuffs_png__decoder__skip_frame(self, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - } else { - status = wuffs_base__make_status(wuffs_base__note__end_of_data); - goto ok; - } - if (self->private_impl.f_metadata_fourcc != 0) { - self->private_impl.f_call_sequence = 48; - status = wuffs_base__make_status(wuffs_base__note__metadata_reported); - goto ok; - } - if (self->private_impl.f_num_decoded_frame_configs_value == 0) { - self->private_impl.f_frame_rect_x0 = self->private_impl.f_first_rect_x0; - self->private_impl.f_frame_rect_y0 = self->private_impl.f_first_rect_y0; - self->private_impl.f_frame_rect_x1 = self->private_impl.f_first_rect_x1; - self->private_impl.f_frame_rect_y1 = self->private_impl.f_first_rect_y1; - self->private_impl.f_frame_config_io_position = self->private_impl.f_first_config_io_position; - self->private_impl.f_frame_duration = self->private_impl.f_first_duration; - self->private_impl.f_frame_disposal = self->private_impl.f_first_disposal; - self->private_impl.f_frame_overwrite_instead_of_blend = self->private_impl.f_first_overwrite_instead_of_blend; - } else { - while (true) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); - uint32_t t_0; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_0 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); - iop_a_src += 4; - } else { - self->private_data.s_do_decode_frame_config[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_do_decode_frame_config[0].scratch; - uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFF)); - *scratch >>= 8; - *scratch <<= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0); - if (num_bits_0 == 24) { - t_0 = ((uint32_t)(*scratch >> 32)); - break; - } - num_bits_0 += 8; - *scratch |= ((uint64_t)(num_bits_0)); - } - } - self->private_impl.f_chunk_length = t_0; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); - uint32_t t_1; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_1 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); - iop_a_src += 4; - } else { - self->private_data.s_do_decode_frame_config[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_do_decode_frame_config[0].scratch; - uint32_t num_bits_1 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_1; - if (num_bits_1 == 24) { - t_1 = ((uint32_t)(*scratch)); - break; - } - num_bits_1 += 8; - *scratch |= ((uint64_t)(num_bits_1)) << 56; - } - } - self->private_impl.f_chunk_type = t_1; - } - if (self->private_impl.f_chunk_type == 1145980233) { - if (self->private_impl.f_chunk_length != 0) { - status = wuffs_base__make_status(wuffs_png__error__bad_chunk); - goto exit; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7); - uint32_t t_2; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_2 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); - iop_a_src += 4; - } else { - self->private_data.s_do_decode_frame_config[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_do_decode_frame_config[0].scratch; - uint32_t num_bits_2 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_2; - if (num_bits_2 == 24) { - t_2 = ((uint32_t)(*scratch)); - break; - } - num_bits_2 += 8; - *scratch |= ((uint64_t)(num_bits_2)) << 56; - } - } - v_checksum_have = t_2; - } - if ( ! self->private_impl.f_ignore_checksum && (v_checksum_have != 2187346606)) { - status = wuffs_base__make_status(wuffs_png__error__bad_checksum); - goto exit; - } - self->private_impl.f_call_sequence = 96; - status = wuffs_base__make_status(wuffs_base__note__end_of_data); - goto ok; - } else if (self->private_impl.f_chunk_type == 1413571686) { - status = wuffs_base__make_status(wuffs_png__error__bad_chunk); - goto exit; - } else if (self->private_impl.f_chunk_type == 1280598886) { - self->private_impl.f_frame_config_io_position = ((uint64_t)(wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))) - 8)); - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9); - status = wuffs_png__decoder__decode_fctl(self, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - self->private_data.s_do_decode_frame_config[0].scratch = 4; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10); - if (self->private_data.s_do_decode_frame_config[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { - self->private_data.s_do_decode_frame_config[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); - iop_a_src = io2_a_src; - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - iop_a_src += self->private_data.s_do_decode_frame_config[0].scratch; - goto label__0__break; - } - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11); - status = wuffs_png__decoder__decode_other_chunk(self, a_src, true); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - if (self->private_impl.f_metadata_fourcc != 0) { - self->private_impl.f_call_sequence = 48; - status = wuffs_base__make_status(wuffs_base__note__metadata_reported); - goto ok; - } - self->private_data.s_do_decode_frame_config[0].scratch = 4; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12); - if (self->private_data.s_do_decode_frame_config[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { - self->private_data.s_do_decode_frame_config[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); - iop_a_src = io2_a_src; - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - iop_a_src += self->private_data.s_do_decode_frame_config[0].scratch; - self->private_impl.f_chunk_length = 0; - } - label__0__break:; - } - if (a_dst != NULL) { - wuffs_base__frame_config__set( - a_dst, - wuffs_base__utility__make_rect_ie_u32( - self->private_impl.f_frame_rect_x0, - self->private_impl.f_frame_rect_y0, - self->private_impl.f_frame_rect_x1, - self->private_impl.f_frame_rect_y1), - ((wuffs_base__flicks)(self->private_impl.f_frame_duration)), - ((uint64_t)(self->private_impl.f_num_decoded_frame_configs_value)), - self->private_impl.f_frame_config_io_position, - self->private_impl.f_frame_disposal, - ((self->private_impl.f_color_type <= 3) && ! self->private_impl.f_seen_trns), - self->private_impl.f_frame_overwrite_instead_of_blend, - 0); - } - wuffs_base__u32__sat_add_indirect(&self->private_impl.f_num_decoded_frame_configs_value, 1); - self->private_impl.f_call_sequence = 64; - - ok: - self->private_impl.p_do_decode_frame_config[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_do_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func png.decoder.skip_frame - -static wuffs_base__status -wuffs_png__decoder__skip_frame( - wuffs_png__decoder* self, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint32_t v_seq_num = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_skip_frame[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - self->private_impl.f_chunk_type_array[0] = 0; - self->private_impl.f_chunk_type_array[1] = 0; - self->private_impl.f_chunk_type_array[2] = 0; - self->private_impl.f_chunk_type_array[3] = 0; - label__0__continue:; - while (true) { - if (((uint64_t)(io2_a_src - iop_a_src)) < 8) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); - goto label__0__continue; - } - self->private_impl.f_chunk_length = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); - self->private_impl.f_chunk_type = ((uint32_t)((wuffs_base__peek_u64le__no_bounds_check(iop_a_src) >> 32))); - if (self->private_impl.f_chunk_type == 1413563465) { - if (self->private_impl.f_chunk_type_array[0] == 102) { - status = wuffs_base__make_status(wuffs_png__error__bad_chunk); - goto exit; - } - self->private_impl.f_chunk_type_array[0] = 73; - self->private_impl.f_chunk_type_array[1] = 68; - self->private_impl.f_chunk_type_array[2] = 65; - self->private_impl.f_chunk_type_array[3] = 84; - } else if (self->private_impl.f_chunk_type == 1413571686) { - if (self->private_impl.f_chunk_type_array[0] == 73) { - status = wuffs_base__make_status(wuffs_png__error__bad_chunk); - goto exit; - } - self->private_impl.f_chunk_type_array[0] = 102; - self->private_impl.f_chunk_type_array[1] = 100; - self->private_impl.f_chunk_type_array[2] = 65; - self->private_impl.f_chunk_type_array[3] = 84; - if (self->private_impl.f_chunk_length < 4) { - status = wuffs_base__make_status(wuffs_png__error__bad_chunk); - goto exit; - } - self->private_impl.f_chunk_length -= 4; - iop_a_src += 8; - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - uint32_t t_0; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_0 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); - iop_a_src += 4; - } else { - self->private_data.s_skip_frame[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_skip_frame[0].scratch; - uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFF)); - *scratch >>= 8; - *scratch <<= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0); - if (num_bits_0 == 24) { - t_0 = ((uint32_t)(*scratch >> 32)); - break; - } - num_bits_0 += 8; - *scratch |= ((uint64_t)(num_bits_0)); - } - } - v_seq_num = t_0; - } - if (v_seq_num != self->private_impl.f_next_animation_seq_num) { - status = wuffs_base__make_status(wuffs_png__error__bad_animation_sequence_number); - goto exit; - } else if (self->private_impl.f_next_animation_seq_num >= 4294967295) { - status = wuffs_base__make_status(wuffs_png__error__unsupported_png_file); - goto exit; - } - self->private_impl.f_next_animation_seq_num += 1; - self->private_data.s_skip_frame[0].scratch = (((uint64_t)(self->private_impl.f_chunk_length)) + 4); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); - if (self->private_data.s_skip_frame[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { - self->private_data.s_skip_frame[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); - iop_a_src = io2_a_src; - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - iop_a_src += self->private_data.s_skip_frame[0].scratch; - self->private_impl.f_chunk_length = 0; - goto label__0__continue; - } else if (self->private_impl.f_chunk_type_array[0] != 0) { - goto label__0__break; - } else if (self->private_impl.f_chunk_type == 1280598886) { - status = wuffs_base__make_status(wuffs_png__error__bad_chunk); - goto exit; - } - self->private_data.s_skip_frame[0].scratch = (((uint64_t)(self->private_impl.f_chunk_length)) + 12); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); - if (self->private_data.s_skip_frame[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { - self->private_data.s_skip_frame[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); - iop_a_src = io2_a_src; - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - iop_a_src += self->private_data.s_skip_frame[0].scratch; - self->private_impl.f_chunk_length = 0; - } - label__0__break:; - wuffs_base__u32__sat_add_indirect(&self->private_impl.f_num_decoded_frames_value, 1); - self->private_impl.f_call_sequence = 32; - - ok: - self->private_impl.p_skip_frame[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_skip_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func png.decoder.decode_frame - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_png__decoder__decode_frame( - wuffs_png__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__pixel_blend a_blend, - wuffs_base__slice_u8 a_workbuf, - wuffs_base__decode_frame_options* a_opts) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - if (!a_dst || !a_src) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - if ((self->private_impl.active_coroutine != 0) && - (self->private_impl.active_coroutine != 3)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); - } - self->private_impl.active_coroutine = 0; - wuffs_base__status status = wuffs_base__make_status(NULL); - - wuffs_base__status v_status = wuffs_base__make_status(NULL); - - uint32_t coro_susp_point = self->private_impl.p_decode_frame[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - while (true) { - { - wuffs_base__status t_0 = wuffs_png__decoder__do_decode_frame(self, - a_dst, - a_src, - a_blend, - a_workbuf, - a_opts); - v_status = t_0; - } - if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { - status = wuffs_base__make_status(wuffs_png__error__truncated_input); - goto exit; - } - status = v_status; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); - } - - ok: - self->private_impl.p_decode_frame[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0; - - goto exit; - exit: - if (wuffs_base__status__is_error(&status)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - } - return status; -} - -// -------- func png.decoder.do_decode_frame - -static wuffs_base__status -wuffs_png__decoder__do_decode_frame( - wuffs_png__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__pixel_blend a_blend, - wuffs_base__slice_u8 a_workbuf, - wuffs_base__decode_frame_options* a_opts) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint32_t v_seq_num = 0; - wuffs_base__status v_status = wuffs_base__make_status(NULL); - uint32_t v_pass_width = 0; - uint32_t v_pass_height = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_do_decode_frame[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - if ((self->private_impl.f_call_sequence & 16) != 0) { - status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence); - goto exit; - } else if (self->private_impl.f_call_sequence >= 96) { - status = wuffs_base__make_status(wuffs_base__note__end_of_data); - goto ok; - } else if (self->private_impl.f_call_sequence != 64) { - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - status = wuffs_png__decoder__do_decode_frame_config(self, NULL, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - } - label__0__continue:; - while (true) { - if (((uint64_t)(io2_a_src - iop_a_src)) < 8) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2); - goto label__0__continue; - } - self->private_impl.f_chunk_length = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); - self->private_impl.f_chunk_type = ((uint32_t)((wuffs_base__peek_u64le__no_bounds_check(iop_a_src) >> 32))); - if (self->private_impl.f_chunk_type == 1413563465) { - self->private_impl.f_chunk_type_array[0] = 73; - self->private_impl.f_chunk_type_array[1] = 68; - self->private_impl.f_chunk_type_array[2] = 65; - self->private_impl.f_chunk_type_array[3] = 84; - iop_a_src += 8; - if ( ! self->private_impl.f_ignore_checksum) { - wuffs_base__ignore_status(wuffs_crc32__ieee_hasher__initialize(&self->private_data.f_crc32, - sizeof (wuffs_crc32__ieee_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED)); - wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__make_slice_u8(self->private_impl.f_chunk_type_array, 4)); - } - goto label__0__break; - } else if (self->private_impl.f_chunk_type == 1413571686) { - self->private_impl.f_chunk_type_array[0] = 102; - self->private_impl.f_chunk_type_array[1] = 100; - self->private_impl.f_chunk_type_array[2] = 65; - self->private_impl.f_chunk_type_array[3] = 84; - if (self->private_impl.f_chunk_length < 4) { - status = wuffs_base__make_status(wuffs_png__error__bad_chunk); - goto exit; - } - self->private_impl.f_chunk_length -= 4; - iop_a_src += 8; - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); - uint32_t t_0; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_0 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); - iop_a_src += 4; - } else { - self->private_data.s_do_decode_frame[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_do_decode_frame[0].scratch; - uint32_t num_bits_0 = ((uint32_t)(*scratch & 0xFF)); - *scratch >>= 8; - *scratch <<= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_0); - if (num_bits_0 == 24) { - t_0 = ((uint32_t)(*scratch >> 32)); - break; - } - num_bits_0 += 8; - *scratch |= ((uint64_t)(num_bits_0)); - } - } - v_seq_num = t_0; - } - if (v_seq_num != self->private_impl.f_next_animation_seq_num) { - status = wuffs_base__make_status(wuffs_png__error__bad_animation_sequence_number); - goto exit; - } else if (self->private_impl.f_next_animation_seq_num >= 4294967295) { - status = wuffs_base__make_status(wuffs_png__error__unsupported_png_file); - goto exit; - } - self->private_impl.f_next_animation_seq_num += 1; - goto label__0__break; - } else if (self->private_impl.f_chunk_type == 1280598886) { - status = wuffs_base__make_status(wuffs_png__error__bad_chunk); - goto exit; - } - self->private_data.s_do_decode_frame[0].scratch = (((uint64_t)(self->private_impl.f_chunk_length)) + 12); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); - if (self->private_data.s_do_decode_frame[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { - self->private_data.s_do_decode_frame[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); - iop_a_src = io2_a_src; - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - iop_a_src += self->private_data.s_do_decode_frame[0].scratch; - self->private_impl.f_chunk_length = 0; - } - label__0__break:; - if (self->private_impl.f_zlib_is_dirty) { - wuffs_base__ignore_status(wuffs_zlib__decoder__initialize(&self->private_data.f_zlib, - sizeof (wuffs_zlib__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED)); - if (self->private_impl.f_ignore_checksum) { - wuffs_zlib__decoder__set_quirk(&self->private_data.f_zlib, 1, 1); - } - } - self->private_impl.f_zlib_is_dirty = true; - v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler, - wuffs_base__pixel_buffer__pixel_format(a_dst), - wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024)), - wuffs_base__utility__make_pixel_format(self->private_impl.f_src_pixfmt), - wuffs_base__make_slice_u8(self->private_data.f_src_palette, 1024), - a_blend); - if ( ! wuffs_base__status__is_ok(&v_status)) { - status = v_status; - if (wuffs_base__status__is_error(&status)) { - goto exit; - } else if (wuffs_base__status__is_suspension(&status)) { - status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension); - goto exit; - } - goto ok; - } - self->private_impl.f_workbuf_hist_pos_base = 0; - while (true) { - if (self->private_impl.f_chunk_type_array[0] == 73) { - v_pass_width = (16777215 & ((((uint32_t)(WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][1])) + self->private_impl.f_width) >> WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][0])); - v_pass_height = (16777215 & ((((uint32_t)(WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][4])) + self->private_impl.f_height) >> WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][3])); - } else { - v_pass_width = (16777215 & ((uint32_t)(self->private_impl.f_frame_rect_x1 - self->private_impl.f_frame_rect_x0))); - v_pass_height = (16777215 & ((uint32_t)(self->private_impl.f_frame_rect_y1 - self->private_impl.f_frame_rect_y0))); - } - if ((v_pass_width > 0) && (v_pass_height > 0)) { - self->private_impl.f_pass_bytes_per_row = wuffs_png__decoder__calculate_bytes_per_row(self, v_pass_width); - self->private_impl.f_pass_workbuf_length = (((uint64_t)(v_pass_height)) * (1 + self->private_impl.f_pass_bytes_per_row)); - while (true) { - { - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - wuffs_base__status t_1 = wuffs_png__decoder__decode_pass(self, a_src, a_workbuf); - v_status = t_1; - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - } - if (wuffs_base__status__is_ok(&v_status)) { - goto label__1__break; - } else if (wuffs_base__status__is_error(&v_status) || ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed))) { - if (self->private_impl.f_workbuf_wi <= ((uint64_t)(a_workbuf.len))) { - wuffs_png__decoder__filter_and_swizzle(self, a_dst, wuffs_base__slice_u8__subslice_j(a_workbuf, self->private_impl.f_workbuf_wi)); - } - if (v_status.repr == wuffs_base__suspension__short_read) { - status = wuffs_base__make_status(wuffs_png__error__truncated_input); - goto exit; - } - } - status = v_status; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(6); - } - label__1__break:; - v_status = wuffs_png__decoder__filter_and_swizzle(self, a_dst, a_workbuf); - if ( ! wuffs_base__status__is_ok(&v_status)) { - status = v_status; - if (wuffs_base__status__is_error(&status)) { - goto exit; - } else if (wuffs_base__status__is_suspension(&status)) { - status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension); - goto exit; - } - goto ok; - } - self->private_impl.f_workbuf_hist_pos_base += self->private_impl.f_pass_workbuf_length; - } - if ((self->private_impl.f_interlace_pass == 0) || (self->private_impl.f_interlace_pass >= 7)) { - goto label__2__break; - } -#if defined(__GNUC__) -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wconversion" -#endif - self->private_impl.f_interlace_pass += 1; -#if defined(__GNUC__) -#pragma GCC diagnostic pop -#endif - } - label__2__break:; - wuffs_base__u32__sat_add_indirect(&self->private_impl.f_num_decoded_frames_value, 1); - self->private_impl.f_call_sequence = 32; - - ok: - self->private_impl.p_do_decode_frame[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_do_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func png.decoder.decode_pass - -static wuffs_base__status -wuffs_png__decoder__decode_pass( - wuffs_png__decoder* self, - wuffs_base__io_buffer* a_src, - wuffs_base__slice_u8 a_workbuf) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - wuffs_base__io_buffer u_w = wuffs_base__empty_io_buffer(); - wuffs_base__io_buffer* v_w = &u_w; - uint8_t* iop_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - uint8_t* io0_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - uint8_t* io1_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - uint8_t* io2_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - uint64_t v_w_mark = 0; - uint64_t v_r_mark = 0; - wuffs_base__status v_zlib_status = wuffs_base__make_status(NULL); - uint32_t v_checksum_have = 0; - uint32_t v_checksum_want = 0; - uint32_t v_seq_num = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_decode_pass[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - self->private_impl.f_workbuf_wi = 0; - label__0__continue:; - while (true) { - if ((self->private_impl.f_workbuf_wi > self->private_impl.f_pass_workbuf_length) || (self->private_impl.f_pass_workbuf_length > ((uint64_t)(a_workbuf.len)))) { - status = wuffs_base__make_status(wuffs_base__error__bad_workbuf_length); - goto exit; - } - { - wuffs_base__io_buffer* o_0_v_w = v_w; - uint8_t *o_0_iop_v_w = iop_v_w; - uint8_t *o_0_io0_v_w = io0_v_w; - uint8_t *o_0_io1_v_w = io1_v_w; - uint8_t *o_0_io2_v_w = io2_v_w; - v_w = wuffs_base__io_writer__set( - &u_w, - &iop_v_w, - &io0_v_w, - &io1_v_w, - &io2_v_w, - wuffs_base__slice_u8__subslice_ij(a_workbuf, - self->private_impl.f_workbuf_wi, - self->private_impl.f_pass_workbuf_length), - ((uint64_t)(self->private_impl.f_workbuf_hist_pos_base + self->private_impl.f_workbuf_wi))); - { - const bool o_1_closed_a_src = a_src->meta.closed; - const uint8_t *o_1_io2_a_src = io2_a_src; - wuffs_base__io_reader__limit(&io2_a_src, iop_a_src, - ((uint64_t)(self->private_impl.f_chunk_length))); - if (a_src) { - size_t n = ((size_t)(io2_a_src - a_src->data.ptr)); - a_src->meta.closed = a_src->meta.closed && (a_src->meta.wi <= n); - a_src->meta.wi = n; - } - v_w_mark = ((uint64_t)(iop_v_w - io0_v_w)); - v_r_mark = ((uint64_t)(iop_a_src - io0_a_src)); - { - u_w.meta.wi = ((size_t)(iop_v_w - u_w.data.ptr)); - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - wuffs_base__status t_0 = wuffs_zlib__decoder__transform_io(&self->private_data.f_zlib, v_w, a_src, wuffs_base__utility__empty_slice_u8()); - v_zlib_status = t_0; - iop_v_w = u_w.data.ptr + u_w.meta.wi; - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - } - if ( ! self->private_impl.f_ignore_checksum) { - wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__io__since(v_r_mark, ((uint64_t)(iop_a_src - io0_a_src)), io0_a_src)); - } - wuffs_base__u32__sat_sub_indirect(&self->private_impl.f_chunk_length, ((uint32_t)((wuffs_base__io__count_since(v_r_mark, ((uint64_t)(iop_a_src - io0_a_src))) & 4294967295)))); - wuffs_base__u64__sat_add_indirect(&self->private_impl.f_workbuf_wi, wuffs_base__io__count_since(v_w_mark, ((uint64_t)(iop_v_w - io0_v_w)))); - io2_a_src = o_1_io2_a_src; - if (a_src) { - a_src->meta.closed = o_1_closed_a_src; - a_src->meta.wi = ((size_t)(io2_a_src - a_src->data.ptr)); - } - } - v_w = o_0_v_w; - iop_v_w = o_0_iop_v_w; - io0_v_w = o_0_io0_v_w; - io1_v_w = o_0_io1_v_w; - io2_v_w = o_0_io2_v_w; - } - if (wuffs_base__status__is_ok(&v_zlib_status)) { - if (self->private_impl.f_chunk_length > 0) { - status = wuffs_base__make_status(wuffs_base__error__too_much_data); - goto exit; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - uint32_t t_1; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_1 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); - iop_a_src += 4; - } else { - self->private_data.s_decode_pass[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_decode_pass[0].scratch; - uint32_t num_bits_1 = ((uint32_t)(*scratch & 0xFF)); - *scratch >>= 8; - *scratch <<= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_1); - if (num_bits_1 == 24) { - t_1 = ((uint32_t)(*scratch >> 32)); - break; - } - num_bits_1 += 8; - *scratch |= ((uint64_t)(num_bits_1)); - } - } - v_checksum_want = t_1; - } - if ( ! self->private_impl.f_ignore_checksum && (self->private_impl.f_chunk_type_array[0] == 73)) { - v_checksum_have = wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__utility__empty_slice_u8()); - if (v_checksum_have != v_checksum_want) { - status = wuffs_base__make_status(wuffs_png__error__bad_checksum); - goto exit; - } - } - goto label__0__break; - } else if (v_zlib_status.repr == wuffs_base__suspension__short_write) { - if ((1 <= self->private_impl.f_interlace_pass) && (self->private_impl.f_interlace_pass <= 6)) { - goto label__0__break; - } - status = wuffs_base__make_status(wuffs_base__error__too_much_data); - goto exit; - } else if (v_zlib_status.repr != wuffs_base__suspension__short_read) { - status = v_zlib_status; - if (wuffs_base__status__is_error(&status)) { - goto exit; - } else if (wuffs_base__status__is_suspension(&status)) { - status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension); - goto exit; - } - goto ok; - } else if (self->private_impl.f_chunk_length == 0) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); - uint32_t t_2; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_2 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); - iop_a_src += 4; - } else { - self->private_data.s_decode_pass[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_decode_pass[0].scratch; - uint32_t num_bits_2 = ((uint32_t)(*scratch & 0xFF)); - *scratch >>= 8; - *scratch <<= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_2); - if (num_bits_2 == 24) { - t_2 = ((uint32_t)(*scratch >> 32)); - break; - } - num_bits_2 += 8; - *scratch |= ((uint64_t)(num_bits_2)); - } - } - v_checksum_want = t_2; - } - if ( ! self->private_impl.f_ignore_checksum && (self->private_impl.f_chunk_type_array[0] == 73)) { - v_checksum_have = wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__utility__empty_slice_u8()); - if (v_checksum_have != v_checksum_want) { - status = wuffs_base__make_status(wuffs_png__error__bad_checksum); - goto exit; - } - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); - uint32_t t_3; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_3 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); - iop_a_src += 4; - } else { - self->private_data.s_decode_pass[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_decode_pass[0].scratch; - uint32_t num_bits_3 = ((uint32_t)(*scratch & 0xFF)); - *scratch >>= 8; - *scratch <<= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_3); - if (num_bits_3 == 24) { - t_3 = ((uint32_t)(*scratch >> 32)); - break; - } - num_bits_3 += 8; - *scratch |= ((uint64_t)(num_bits_3)); - } - } - self->private_impl.f_chunk_length = t_3; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7); - uint32_t t_4; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_4 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); - iop_a_src += 4; - } else { - self->private_data.s_decode_pass[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_decode_pass[0].scratch; - uint32_t num_bits_4 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_4; - if (num_bits_4 == 24) { - t_4 = ((uint32_t)(*scratch)); - break; - } - num_bits_4 += 8; - *scratch |= ((uint64_t)(num_bits_4)) << 56; - } - } - self->private_impl.f_chunk_type = t_4; - } - if (self->private_impl.f_chunk_type_array[0] == 73) { - if (self->private_impl.f_chunk_type != 1413563465) { - status = wuffs_base__make_status(wuffs_png__error__bad_chunk); - goto exit; - } - if ( ! self->private_impl.f_ignore_checksum) { - wuffs_base__ignore_status(wuffs_crc32__ieee_hasher__initialize(&self->private_data.f_crc32, - sizeof (wuffs_crc32__ieee_hasher), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED)); - wuffs_crc32__ieee_hasher__update_u32(&self->private_data.f_crc32, wuffs_base__make_slice_u8(self->private_impl.f_chunk_type_array, 4)); - } - } else { - if ((self->private_impl.f_chunk_type != 1413571686) || (self->private_impl.f_chunk_length < 4)) { - status = wuffs_base__make_status(wuffs_png__error__bad_chunk); - goto exit; - } - self->private_impl.f_chunk_length -= 4; - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9); - uint32_t t_5; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_5 = wuffs_base__peek_u32be__no_bounds_check(iop_a_src); - iop_a_src += 4; - } else { - self->private_data.s_decode_pass[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_decode_pass[0].scratch; - uint32_t num_bits_5 = ((uint32_t)(*scratch & 0xFF)); - *scratch >>= 8; - *scratch <<= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << (56 - num_bits_5); - if (num_bits_5 == 24) { - t_5 = ((uint32_t)(*scratch >> 32)); - break; - } - num_bits_5 += 8; - *scratch |= ((uint64_t)(num_bits_5)); - } - } - v_seq_num = t_5; - } - if (v_seq_num != self->private_impl.f_next_animation_seq_num) { - status = wuffs_base__make_status(wuffs_png__error__bad_animation_sequence_number); - goto exit; - } else if (self->private_impl.f_next_animation_seq_num >= 4294967295) { - status = wuffs_base__make_status(wuffs_png__error__unsupported_png_file); - goto exit; - } - self->private_impl.f_next_animation_seq_num += 1; - } - goto label__0__continue; - } else if (((uint64_t)(io2_a_src - iop_a_src)) > 0) { - status = wuffs_base__make_status(wuffs_png__error__internal_error_zlib_decoder_did_not_exhaust_its_input); - goto exit; - } - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(11); - } - label__0__break:; - if (self->private_impl.f_workbuf_wi != self->private_impl.f_pass_workbuf_length) { - status = wuffs_base__make_status(wuffs_base__error__not_enough_data); - goto exit; - } else if (0 < ((uint64_t)(a_workbuf.len))) { - if (a_workbuf.ptr[0] == 4) { - a_workbuf.ptr[0] = 1; - } - } - - ok: - self->private_impl.p_decode_pass[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_pass[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func png.decoder.frame_dirty_rect - -WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32 -wuffs_png__decoder__frame_dirty_rect( - const wuffs_png__decoder* self) { - if (!self) { - return wuffs_base__utility__empty_rect_ie_u32(); - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return wuffs_base__utility__empty_rect_ie_u32(); - } - - return wuffs_base__utility__make_rect_ie_u32( - self->private_impl.f_frame_rect_x0, - self->private_impl.f_frame_rect_y0, - self->private_impl.f_frame_rect_x1, - self->private_impl.f_frame_rect_y1); -} - -// -------- func png.decoder.num_animation_loops - -WUFFS_BASE__MAYBE_STATIC uint32_t -wuffs_png__decoder__num_animation_loops( - const wuffs_png__decoder* self) { - if (!self) { - return 0; - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return 0; - } - - return self->private_impl.f_num_animation_loops_value; -} - -// -------- func png.decoder.num_decoded_frame_configs - -WUFFS_BASE__MAYBE_STATIC uint64_t -wuffs_png__decoder__num_decoded_frame_configs( - const wuffs_png__decoder* self) { - if (!self) { - return 0; - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return 0; - } - - return ((uint64_t)(self->private_impl.f_num_decoded_frame_configs_value)); -} - -// -------- func png.decoder.num_decoded_frames - -WUFFS_BASE__MAYBE_STATIC uint64_t -wuffs_png__decoder__num_decoded_frames( - const wuffs_png__decoder* self) { - if (!self) { - return 0; - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return 0; - } - - return ((uint64_t)(self->private_impl.f_num_decoded_frames_value)); -} - -// -------- func png.decoder.restart_frame - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_png__decoder__restart_frame( - wuffs_png__decoder* self, - uint64_t a_index, - uint64_t a_io_position) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - - if (self->private_impl.f_call_sequence < 32) { - return wuffs_base__make_status(wuffs_base__error__bad_call_sequence); - } else if ((a_index >= ((uint64_t)(self->private_impl.f_num_animation_frames_value))) || ((a_index == 0) && (a_io_position != self->private_impl.f_first_config_io_position))) { - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - self->private_impl.f_call_sequence = 40; - if (self->private_impl.f_interlace_pass >= 1) { - self->private_impl.f_interlace_pass = 1; - } - self->private_impl.f_frame_config_io_position = a_io_position; - self->private_impl.f_num_decoded_frame_configs_value = ((uint32_t)((a_index & 4294967295))); - self->private_impl.f_num_decoded_frames_value = self->private_impl.f_num_decoded_frame_configs_value; - return wuffs_base__make_status(NULL); -} - -// -------- func png.decoder.set_report_metadata - -WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct -wuffs_png__decoder__set_report_metadata( - wuffs_png__decoder* self, - uint32_t a_fourcc, - bool a_report) { - if (!self) { - return wuffs_base__make_empty_struct(); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_empty_struct(); - } - - if (a_fourcc == 1128813133) { - self->private_impl.f_report_metadata_chrm = a_report; - } else if (a_fourcc == 1163413830) { - self->private_impl.f_report_metadata_exif = a_report; - } else if (a_fourcc == 1195461953) { - self->private_impl.f_report_metadata_gama = a_report; - } else if (a_fourcc == 1229144912) { - self->private_impl.f_report_metadata_iccp = a_report; - } else if (a_fourcc == 1263947808) { - self->private_impl.f_report_metadata_kvp = a_report; - } else if (a_fourcc == 1397901122) { - self->private_impl.f_report_metadata_srgb = a_report; - } - return wuffs_base__make_empty_struct(); -} - -// -------- func png.decoder.tell_me_more - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_png__decoder__tell_me_more( - wuffs_png__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__more_information* a_minfo, - wuffs_base__io_buffer* a_src) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - if (!a_dst || !a_src) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - if ((self->private_impl.active_coroutine != 0) && - (self->private_impl.active_coroutine != 4)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); - } - self->private_impl.active_coroutine = 0; - wuffs_base__status status = wuffs_base__make_status(NULL); - - wuffs_base__status v_status = wuffs_base__make_status(NULL); - - uint32_t coro_susp_point = self->private_impl.p_tell_me_more[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - while (true) { - { - wuffs_base__status t_0 = wuffs_png__decoder__do_tell_me_more(self, a_dst, a_minfo, a_src); - v_status = t_0; - } - if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { - status = wuffs_base__make_status(wuffs_png__error__truncated_input); - goto exit; - } - status = v_status; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); - } - - ok: - self->private_impl.p_tell_me_more[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_tell_me_more[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 4 : 0; - - goto exit; - exit: - if (wuffs_base__status__is_error(&status)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - } - return status; -} - -// -------- func png.decoder.do_tell_me_more - -static wuffs_base__status -wuffs_png__decoder__do_tell_me_more( - wuffs_png__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__more_information* a_minfo, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint8_t v_c = 0; - uint16_t v_c2 = 0; - wuffs_base__io_buffer u_w = wuffs_base__empty_io_buffer(); - wuffs_base__io_buffer* v_w = &u_w; - uint8_t* iop_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - uint8_t* io0_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - uint8_t* io1_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - uint8_t* io2_v_w WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - uint64_t v_num_written = 0; - uint64_t v_w_mark = 0; - uint64_t v_r_mark = 0; - wuffs_base__status v_zlib_status = wuffs_base__make_status(NULL); - - uint8_t* iop_a_dst = NULL; - uint8_t* io0_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - uint8_t* io1_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - uint8_t* io2_a_dst WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_dst && a_dst->data.ptr) { - io0_a_dst = a_dst->data.ptr; - io1_a_dst = io0_a_dst + a_dst->meta.wi; - iop_a_dst = io1_a_dst; - io2_a_dst = io0_a_dst + a_dst->data.len; - if (a_dst->meta.closed) { - io2_a_dst = iop_a_dst; - } - } - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_do_tell_me_more[0]; - if (coro_susp_point) { - v_zlib_status = self->private_data.s_do_tell_me_more[0].v_zlib_status; - } - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - if ((self->private_impl.f_call_sequence & 16) == 0) { - status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence); - goto exit; - } - if (self->private_impl.f_metadata_fourcc == 0) { - status = wuffs_base__make_status(wuffs_base__error__no_more_information); - goto exit; - } - while (true) { - if (self->private_impl.f_metadata_flavor == 3) { - while (true) { - if (wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))) != self->private_impl.f_metadata_y) { - status = wuffs_base__make_status(wuffs_base__error__bad_i_o_position); - goto exit; - } else if (a_minfo != NULL) { - wuffs_base__more_information__set(a_minfo, - self->private_impl.f_metadata_flavor, - self->private_impl.f_metadata_fourcc, - self->private_impl.f_metadata_x, - self->private_impl.f_metadata_y, - self->private_impl.f_metadata_z); - } - if (self->private_impl.f_metadata_y >= self->private_impl.f_metadata_z) { - goto label__goto_done__break; - } - self->private_impl.f_metadata_y = self->private_impl.f_metadata_z; - status = wuffs_base__make_status(wuffs_base__suspension__even_more_information); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); - } - } - if (self->private_impl.f_metadata_is_zlib_compressed) { - if (self->private_impl.f_zlib_is_dirty) { - wuffs_base__ignore_status(wuffs_zlib__decoder__initialize(&self->private_data.f_zlib, - sizeof (wuffs_zlib__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED)); - if (self->private_impl.f_ignore_checksum) { - wuffs_zlib__decoder__set_quirk(&self->private_data.f_zlib, 1, 1); - } - } - self->private_impl.f_zlib_is_dirty = true; - self->private_impl.f_ztxt_hist_pos = 0; - } - label__loop__continue:; - while (true) { - if (a_minfo != NULL) { - wuffs_base__more_information__set(a_minfo, - self->private_impl.f_metadata_flavor, - self->private_impl.f_metadata_fourcc, - self->private_impl.f_metadata_x, - self->private_impl.f_metadata_y, - self->private_impl.f_metadata_z); - } - if (self->private_impl.f_metadata_flavor != 4) { - goto label__loop__break; - } - if (self->private_impl.f_metadata_is_zlib_compressed) { - if (self->private_impl.f_chunk_type == 1346585449) { - { - const bool o_0_closed_a_src = a_src->meta.closed; - const uint8_t *o_0_io2_a_src = io2_a_src; - wuffs_base__io_reader__limit(&io2_a_src, iop_a_src, - ((uint64_t)(self->private_impl.f_chunk_length))); - if (a_src) { - size_t n = ((size_t)(io2_a_src - a_src->data.ptr)); - a_src->meta.closed = a_src->meta.closed && (a_src->meta.wi <= n); - a_src->meta.wi = n; - } - v_r_mark = ((uint64_t)(iop_a_src - io0_a_src)); - { - if (a_dst) { - a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); - } - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - wuffs_base__status t_0 = wuffs_zlib__decoder__transform_io(&self->private_data.f_zlib, a_dst, a_src, wuffs_base__utility__empty_slice_u8()); - v_zlib_status = t_0; - if (a_dst) { - iop_a_dst = a_dst->data.ptr + a_dst->meta.wi; - } - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - } - wuffs_base__u32__sat_sub_indirect(&self->private_impl.f_chunk_length, ((uint32_t)((wuffs_base__io__count_since(v_r_mark, ((uint64_t)(iop_a_src - io0_a_src))) & 4294967295)))); - io2_a_src = o_0_io2_a_src; - if (a_src) { - a_src->meta.closed = o_0_closed_a_src; - a_src->meta.wi = ((size_t)(io2_a_src - a_src->data.ptr)); - } - } - if (wuffs_base__status__is_ok(&v_zlib_status)) { - self->private_impl.f_metadata_is_zlib_compressed = false; - goto label__loop__break; - } else if ( ! wuffs_base__status__is_suspension(&v_zlib_status)) { - status = v_zlib_status; - if (wuffs_base__status__is_error(&status)) { - goto exit; - } else if (wuffs_base__status__is_suspension(&status)) { - status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension); - goto exit; - } - goto ok; - } - status = v_zlib_status; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2); - } else if (self->private_impl.f_chunk_type == 1951945833) { - { - const bool o_1_closed_a_src = a_src->meta.closed; - const uint8_t *o_1_io2_a_src = io2_a_src; - wuffs_base__io_reader__limit(&io2_a_src, iop_a_src, - ((uint64_t)(self->private_impl.f_chunk_length))); - if (a_src) { - size_t n = ((size_t)(io2_a_src - a_src->data.ptr)); - a_src->meta.closed = a_src->meta.closed && (a_src->meta.wi <= n); - a_src->meta.wi = n; - } - v_r_mark = ((uint64_t)(iop_a_src - io0_a_src)); - { - if (a_dst) { - a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); - } - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - wuffs_base__status t_1 = wuffs_zlib__decoder__transform_io(&self->private_data.f_zlib, a_dst, a_src, wuffs_base__utility__empty_slice_u8()); - v_zlib_status = t_1; - if (a_dst) { - iop_a_dst = a_dst->data.ptr + a_dst->meta.wi; - } - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - } - wuffs_base__u32__sat_sub_indirect(&self->private_impl.f_chunk_length, ((uint32_t)((wuffs_base__io__count_since(v_r_mark, ((uint64_t)(iop_a_src - io0_a_src))) & 4294967295)))); - io2_a_src = o_1_io2_a_src; - if (a_src) { - a_src->meta.closed = o_1_closed_a_src; - a_src->meta.wi = ((size_t)(io2_a_src - a_src->data.ptr)); - } - } - if (wuffs_base__status__is_ok(&v_zlib_status)) { - self->private_impl.f_metadata_is_zlib_compressed = false; - goto label__loop__break; - } else if ( ! wuffs_base__status__is_suspension(&v_zlib_status)) { - status = v_zlib_status; - if (wuffs_base__status__is_error(&status)) { - goto exit; - } else if (wuffs_base__status__is_suspension(&status)) { - status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension); - goto exit; - } - goto ok; - } - status = v_zlib_status; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3); - } else if (self->private_impl.f_chunk_type == 1951945850) { - if (self->private_impl.f_ztxt_ri == self->private_impl.f_ztxt_wi) { - { - wuffs_base__io_buffer* o_2_v_w = v_w; - uint8_t *o_2_iop_v_w = iop_v_w; - uint8_t *o_2_io0_v_w = io0_v_w; - uint8_t *o_2_io1_v_w = io1_v_w; - uint8_t *o_2_io2_v_w = io2_v_w; - v_w = wuffs_base__io_writer__set( - &u_w, - &iop_v_w, - &io0_v_w, - &io1_v_w, - &io2_v_w, - wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024), - self->private_impl.f_ztxt_hist_pos); - { - const bool o_3_closed_a_src = a_src->meta.closed; - const uint8_t *o_3_io2_a_src = io2_a_src; - wuffs_base__io_reader__limit(&io2_a_src, iop_a_src, - ((uint64_t)(self->private_impl.f_chunk_length))); - if (a_src) { - size_t n = ((size_t)(io2_a_src - a_src->data.ptr)); - a_src->meta.closed = a_src->meta.closed && (a_src->meta.wi <= n); - a_src->meta.wi = n; - } - v_w_mark = ((uint64_t)(iop_v_w - io0_v_w)); - v_r_mark = ((uint64_t)(iop_a_src - io0_a_src)); - { - u_w.meta.wi = ((size_t)(iop_v_w - u_w.data.ptr)); - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - wuffs_base__status t_2 = wuffs_zlib__decoder__transform_io(&self->private_data.f_zlib, v_w, a_src, wuffs_base__utility__empty_slice_u8()); - v_zlib_status = t_2; - iop_v_w = u_w.data.ptr + u_w.meta.wi; - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - } - wuffs_base__u32__sat_sub_indirect(&self->private_impl.f_chunk_length, ((uint32_t)((wuffs_base__io__count_since(v_r_mark, ((uint64_t)(iop_a_src - io0_a_src))) & 4294967295)))); - v_num_written = wuffs_base__io__count_since(v_w_mark, ((uint64_t)(iop_v_w - io0_v_w))); - io2_a_src = o_3_io2_a_src; - if (a_src) { - a_src->meta.closed = o_3_closed_a_src; - a_src->meta.wi = ((size_t)(io2_a_src - a_src->data.ptr)); - } - } - v_w = o_2_v_w; - iop_v_w = o_2_iop_v_w; - io0_v_w = o_2_io0_v_w; - io1_v_w = o_2_io1_v_w; - io2_v_w = o_2_io2_v_w; - } - if (v_num_written > 1024) { - status = wuffs_base__make_status(wuffs_png__error__internal_error_inconsistent_i_o); - goto exit; - } - self->private_impl.f_ztxt_ri = 0; - self->private_impl.f_ztxt_wi = ((uint32_t)(v_num_written)); - wuffs_base__u64__sat_add_indirect(&self->private_impl.f_ztxt_hist_pos, v_num_written); - } - while (self->private_impl.f_ztxt_ri < self->private_impl.f_ztxt_wi) { - v_c2 = WUFFS_PNG__LATIN_1[self->private_data.f_dst_palette[self->private_impl.f_ztxt_ri]]; - if (v_c2 == 0) { - status = wuffs_base__make_status(wuffs_png__error__bad_text_chunk_not_latin_1); - goto exit; - } else if (v_c2 <= 127) { - if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) { - status = wuffs_base__make_status(wuffs_base__suspension__short_write); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4); - goto label__loop__continue; - } - self->private_impl.f_ztxt_ri += 1; - (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)(v_c2))), iop_a_dst += 1); - } else { - if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 1) { - status = wuffs_base__make_status(wuffs_base__suspension__short_write); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5); - goto label__loop__continue; - } - self->private_impl.f_ztxt_ri += 1; - (wuffs_base__poke_u16le__no_bounds_check(iop_a_dst, v_c2), iop_a_dst += 2); - } - } - if (wuffs_base__status__is_ok(&v_zlib_status)) { - self->private_impl.f_metadata_is_zlib_compressed = false; - goto label__loop__break; - } else if ( ! wuffs_base__status__is_suspension(&v_zlib_status)) { - status = v_zlib_status; - if (wuffs_base__status__is_error(&status)) { - goto exit; - } else if (wuffs_base__status__is_suspension(&status)) { - status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension); - goto exit; - } - goto ok; - } else if (v_zlib_status.repr != wuffs_base__suspension__short_write) { - status = v_zlib_status; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(6); - } - } else { - status = wuffs_base__make_status(wuffs_png__error__internal_error_inconsistent_chunk_type); - goto exit; - } - } else if ((self->private_impl.f_chunk_type == 1951945833) && (self->private_impl.f_metadata_fourcc == 1263947862)) { - while (true) { - if (self->private_impl.f_chunk_length <= 0) { - goto label__loop__break; - } else if (((uint64_t)(io2_a_src - iop_a_src)) <= 0) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(7); - goto label__loop__continue; - } else if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) { - status = wuffs_base__make_status(wuffs_base__suspension__short_write); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(8); - goto label__loop__continue; - } - self->private_impl.f_chunk_length -= 1; - v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); - iop_a_src += 1; - (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, v_c), iop_a_dst += 1); - } - } else { - while (true) { - if (self->private_impl.f_chunk_length <= 0) { - if (self->private_impl.f_metadata_fourcc == 1263947851) { - status = wuffs_base__make_status(wuffs_png__error__bad_chunk); - goto exit; - } - goto label__loop__break; - } else if (((uint64_t)(io2_a_src - iop_a_src)) <= 0) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(9); - goto label__loop__continue; - } - v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); - if (v_c == 0) { - self->private_impl.f_chunk_length -= 1; - iop_a_src += 1; - goto label__loop__break; - } - v_c2 = WUFFS_PNG__LATIN_1[v_c]; - if (v_c2 == 0) { - status = wuffs_base__make_status(wuffs_png__error__bad_text_chunk_not_latin_1); - goto exit; - } else if (v_c2 <= 127) { - if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 0) { - status = wuffs_base__make_status(wuffs_base__suspension__short_write); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(10); - goto label__loop__continue; - } - self->private_impl.f_chunk_length -= 1; - iop_a_src += 1; - (wuffs_base__poke_u8be__no_bounds_check(iop_a_dst, ((uint8_t)(v_c2))), iop_a_dst += 1); - } else { - if (((uint64_t)(io2_a_dst - iop_a_dst)) <= 1) { - status = wuffs_base__make_status(wuffs_base__suspension__short_write); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(11); - goto label__loop__continue; - } - self->private_impl.f_chunk_length -= 1; - iop_a_src += 1; - (wuffs_base__poke_u16le__no_bounds_check(iop_a_dst, v_c2), iop_a_dst += 2); - } - } - } - } - label__loop__break:; - if (self->private_impl.f_metadata_fourcc == 1263947851) { - self->private_impl.f_metadata_fourcc = 1263947862; - if (self->private_impl.f_chunk_type == 1951945833) { - if (self->private_impl.f_chunk_length <= 1) { - status = wuffs_base__make_status(wuffs_png__error__bad_chunk); - goto exit; - } - self->private_impl.f_chunk_length -= 2; - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_3 = *iop_a_src++; - v_c = t_3; - } - if (v_c == 0) { - self->private_impl.f_metadata_is_zlib_compressed = false; - } else if (v_c == 1) { - self->private_impl.f_metadata_is_zlib_compressed = true; - } else { - status = wuffs_base__make_status(wuffs_png__error__bad_chunk); - goto exit; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(13); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_4 = *iop_a_src++; - v_c = t_4; - } - if ((v_c != 0) && self->private_impl.f_metadata_is_zlib_compressed) { - status = wuffs_base__make_status(wuffs_png__error__unsupported_png_compression_method); - goto exit; - } - self->private_impl.f_metadata_fourcc -= 2; - while (self->private_impl.f_metadata_fourcc != 1263947862) { - self->private_impl.f_metadata_fourcc += 1; - while (true) { - if (self->private_impl.f_chunk_length <= 0) { - status = wuffs_base__make_status(wuffs_png__error__bad_chunk); - goto exit; - } - self->private_impl.f_chunk_length -= 1; - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(14); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_5 = *iop_a_src++; - v_c = t_5; - } - if (v_c == 0) { - goto label__0__break; - } - } - label__0__break:; - } - } else if (self->private_impl.f_chunk_type == 1951945850) { - if (self->private_impl.f_chunk_length <= 0) { - status = wuffs_base__make_status(wuffs_png__error__bad_chunk); - goto exit; - } - self->private_impl.f_chunk_length -= 1; - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(15); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_6 = *iop_a_src++; - v_c = t_6; - } - if (v_c != 0) { - status = wuffs_base__make_status(wuffs_png__error__unsupported_png_compression_method); - goto exit; - } - self->private_impl.f_metadata_is_zlib_compressed = true; - } - self->private_impl.f_call_sequence &= 239; - status = wuffs_base__make_status(NULL); - goto ok; - } - goto label__goto_done__break; - } - label__goto_done__break:; - if (self->private_impl.f_chunk_length != 0) { - status = wuffs_base__make_status(wuffs_png__error__bad_chunk); - goto exit; - } - self->private_data.s_do_tell_me_more[0].scratch = 4; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16); - if (self->private_data.s_do_tell_me_more[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { - self->private_data.s_do_tell_me_more[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); - iop_a_src = io2_a_src; - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - iop_a_src += self->private_data.s_do_tell_me_more[0].scratch; - self->private_impl.f_metadata_flavor = 0; - self->private_impl.f_metadata_fourcc = 0; - self->private_impl.f_metadata_x = 0; - self->private_impl.f_metadata_y = 0; - self->private_impl.f_metadata_z = 0; - self->private_impl.f_call_sequence &= 239; - status = wuffs_base__make_status(NULL); - goto ok; - - ok: - self->private_impl.p_do_tell_me_more[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_do_tell_me_more[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_data.s_do_tell_me_more[0].v_zlib_status = v_zlib_status; - - goto exit; - exit: - if (a_dst && a_dst->data.ptr) { - a_dst->meta.wi = ((size_t)(iop_a_dst - a_dst->data.ptr)); - } - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func png.decoder.workbuf_len - -WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 -wuffs_png__decoder__workbuf_len( - const wuffs_png__decoder* self) { - if (!self) { - return wuffs_base__utility__empty_range_ii_u64(); - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return wuffs_base__utility__empty_range_ii_u64(); - } - - return wuffs_base__utility__make_range_ii_u64(self->private_impl.f_overall_workbuf_length, self->private_impl.f_overall_workbuf_length); -} - -// -------- func png.decoder.filter_and_swizzle - -static wuffs_base__status -wuffs_png__decoder__filter_and_swizzle( - wuffs_png__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__slice_u8 a_workbuf) { - return (*self->private_impl.choosy_filter_and_swizzle)(self, a_dst, a_workbuf); -} - -static wuffs_base__status -wuffs_png__decoder__filter_and_swizzle__choosy_default( - wuffs_png__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__slice_u8 a_workbuf) { - wuffs_base__pixel_format v_dst_pixfmt = {0}; - uint32_t v_dst_bits_per_pixel = 0; - uint64_t v_dst_bytes_per_pixel = 0; - uint64_t v_dst_bytes_per_row0 = 0; - uint64_t v_dst_bytes_per_row1 = 0; - wuffs_base__slice_u8 v_dst_palette = {0}; - wuffs_base__table_u8 v_tab = {0}; - uint32_t v_y = 0; - wuffs_base__slice_u8 v_dst = {0}; - uint8_t v_filter = 0; - wuffs_base__slice_u8 v_curr_row = {0}; - wuffs_base__slice_u8 v_prev_row = {0}; - - v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst); - v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt); - if ((v_dst_bits_per_pixel & 7) != 0) { - return wuffs_base__make_status(wuffs_base__error__unsupported_option); - } - v_dst_bytes_per_pixel = ((uint64_t)((v_dst_bits_per_pixel / 8))); - v_dst_bytes_per_row0 = (((uint64_t)(self->private_impl.f_frame_rect_x0)) * v_dst_bytes_per_pixel); - v_dst_bytes_per_row1 = (((uint64_t)(self->private_impl.f_frame_rect_x1)) * v_dst_bytes_per_pixel); - v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024)); - v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0); - if (v_dst_bytes_per_row1 < ((uint64_t)(v_tab.width))) { - v_tab = wuffs_base__table_u8__subtable_ij(v_tab, - 0, - 0, - v_dst_bytes_per_row1, - ((uint64_t)(v_tab.height))); - } - if (v_dst_bytes_per_row0 < ((uint64_t)(v_tab.width))) { - v_tab = wuffs_base__table_u8__subtable_ij(v_tab, - v_dst_bytes_per_row0, - 0, - ((uint64_t)(v_tab.width)), - ((uint64_t)(v_tab.height))); - } else { - v_tab = wuffs_base__table_u8__subtable_ij(v_tab, - 0, - 0, - 0, - 0); - } - v_y = self->private_impl.f_frame_rect_y0; - while (v_y < self->private_impl.f_frame_rect_y1) { - v_dst = wuffs_base__table_u8__row_u32(v_tab, v_y); - if (1 > ((uint64_t)(a_workbuf.len))) { - return wuffs_base__make_status(wuffs_png__error__internal_error_inconsistent_workbuf_length); - } - v_filter = a_workbuf.ptr[0]; - a_workbuf = wuffs_base__slice_u8__subslice_i(a_workbuf, 1); - if (self->private_impl.f_pass_bytes_per_row > ((uint64_t)(a_workbuf.len))) { - return wuffs_base__make_status(wuffs_png__error__internal_error_inconsistent_workbuf_length); - } - v_curr_row = wuffs_base__slice_u8__subslice_j(a_workbuf, self->private_impl.f_pass_bytes_per_row); - a_workbuf = wuffs_base__slice_u8__subslice_i(a_workbuf, self->private_impl.f_pass_bytes_per_row); - if (v_filter == 0) { - } else if (v_filter == 1) { - wuffs_png__decoder__filter_1(self, v_curr_row); - } else if (v_filter == 2) { - wuffs_png__decoder__filter_2(self, v_curr_row, v_prev_row); - } else if (v_filter == 3) { - wuffs_png__decoder__filter_3(self, v_curr_row, v_prev_row); - } else if (v_filter == 4) { - wuffs_png__decoder__filter_4(self, v_curr_row, v_prev_row); - } else { - return wuffs_base__make_status(wuffs_png__error__bad_filter); - } - wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, v_curr_row); - v_prev_row = v_curr_row; - v_y += 1; - } - return wuffs_base__make_status(NULL); -} - -// -------- func png.decoder.filter_and_swizzle_tricky - -static wuffs_base__status -wuffs_png__decoder__filter_and_swizzle_tricky( - wuffs_png__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__slice_u8 a_workbuf) { - wuffs_base__pixel_format v_dst_pixfmt = {0}; - uint32_t v_dst_bits_per_pixel = 0; - uint64_t v_dst_bytes_per_pixel = 0; - uint64_t v_dst_bytes_per_row1 = 0; - wuffs_base__slice_u8 v_dst_palette = {0}; - wuffs_base__table_u8 v_tab = {0}; - uint64_t v_src_bytes_per_pixel = 0; - uint32_t v_x = 0; - uint32_t v_y = 0; - uint64_t v_i = 0; - wuffs_base__slice_u8 v_dst = {0}; - uint8_t v_filter = 0; - wuffs_base__slice_u8 v_s = {0}; - wuffs_base__slice_u8 v_curr_row = {0}; - wuffs_base__slice_u8 v_prev_row = {0}; - uint8_t v_bits_unpacked[8] = {0}; - uint8_t v_bits_packed = 0; - uint8_t v_packs_remaining = 0; - uint8_t v_multiplier = 0; - uint8_t v_shift = 0; - - v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst); - v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt); - if ((v_dst_bits_per_pixel & 7) != 0) { - return wuffs_base__make_status(wuffs_base__error__unsupported_option); - } - v_dst_bytes_per_pixel = ((uint64_t)((v_dst_bits_per_pixel / 8))); - v_dst_bytes_per_row1 = (((uint64_t)(self->private_impl.f_frame_rect_x1)) * v_dst_bytes_per_pixel); - v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024)); - v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0); - v_src_bytes_per_pixel = 1; - if (self->private_impl.f_depth >= 8) { - v_src_bytes_per_pixel = (((uint64_t)(WUFFS_PNG__NUM_CHANNELS[self->private_impl.f_color_type])) * ((uint64_t)((self->private_impl.f_depth >> 3)))); - } - if (self->private_impl.f_chunk_type_array[0] == 73) { - v_y = ((uint32_t)(WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][5])); - } else { - v_y = self->private_impl.f_frame_rect_y0; - } - while (v_y < self->private_impl.f_frame_rect_y1) { - v_dst = wuffs_base__table_u8__row_u32(v_tab, v_y); - if (v_dst_bytes_per_row1 < ((uint64_t)(v_dst.len))) { - v_dst = wuffs_base__slice_u8__subslice_j(v_dst, v_dst_bytes_per_row1); - } - if (1 > ((uint64_t)(a_workbuf.len))) { - return wuffs_base__make_status(wuffs_png__error__internal_error_inconsistent_workbuf_length); - } - v_filter = a_workbuf.ptr[0]; - a_workbuf = wuffs_base__slice_u8__subslice_i(a_workbuf, 1); - if (self->private_impl.f_pass_bytes_per_row > ((uint64_t)(a_workbuf.len))) { - return wuffs_base__make_status(wuffs_png__error__internal_error_inconsistent_workbuf_length); - } - v_curr_row = wuffs_base__slice_u8__subslice_j(a_workbuf, self->private_impl.f_pass_bytes_per_row); - a_workbuf = wuffs_base__slice_u8__subslice_i(a_workbuf, self->private_impl.f_pass_bytes_per_row); - if (v_filter == 0) { - } else if (v_filter == 1) { - wuffs_png__decoder__filter_1(self, v_curr_row); - } else if (v_filter == 2) { - wuffs_png__decoder__filter_2(self, v_curr_row, v_prev_row); - } else if (v_filter == 3) { - wuffs_png__decoder__filter_3(self, v_curr_row, v_prev_row); - } else if (v_filter == 4) { - wuffs_png__decoder__filter_4(self, v_curr_row, v_prev_row); - } else { - return wuffs_base__make_status(wuffs_png__error__bad_filter); - } - v_s = v_curr_row; - if (self->private_impl.f_chunk_type_array[0] == 73) { - v_x = ((uint32_t)(WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][2])); - } else { - v_x = self->private_impl.f_frame_rect_x0; - } - if (self->private_impl.f_depth == 8) { - while (v_x < self->private_impl.f_frame_rect_x1) { - v_i = (((uint64_t)(v_x)) * v_dst_bytes_per_pixel); - if (v_i <= ((uint64_t)(v_dst.len))) { - if (self->private_impl.f_color_type == 4) { - if (2 <= ((uint64_t)(v_s.len))) { - v_bits_unpacked[0] = v_s.ptr[0]; - v_bits_unpacked[1] = v_s.ptr[0]; - v_bits_unpacked[2] = v_s.ptr[0]; - v_bits_unpacked[3] = v_s.ptr[1]; - v_s = wuffs_base__slice_u8__subslice_i(v_s, 2); - wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__make_slice_u8(v_bits_unpacked, 4)); - } - } else if (((uint32_t)((self->private_impl.f_remap_transparency & 4294967295))) != 0) { - if (self->private_impl.f_color_type == 0) { - if (1 <= ((uint64_t)(v_s.len))) { - v_bits_unpacked[0] = v_s.ptr[0]; - v_bits_unpacked[1] = v_s.ptr[0]; - v_bits_unpacked[2] = v_s.ptr[0]; - v_bits_unpacked[3] = 255; - v_s = wuffs_base__slice_u8__subslice_i(v_s, 1); - if (((uint32_t)((self->private_impl.f_remap_transparency & 4294967295))) == ((((uint32_t)(v_bits_unpacked[0])) << 0) | - (((uint32_t)(v_bits_unpacked[1])) << 8) | - (((uint32_t)(v_bits_unpacked[2])) << 16) | - (((uint32_t)(v_bits_unpacked[3])) << 24))) { - v_bits_unpacked[0] = 0; - v_bits_unpacked[1] = 0; - v_bits_unpacked[2] = 0; - v_bits_unpacked[3] = 0; - } - wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__make_slice_u8(v_bits_unpacked, 4)); - } - } else { - if (3 <= ((uint64_t)(v_s.len))) { - v_bits_unpacked[0] = v_s.ptr[2]; - v_bits_unpacked[1] = v_s.ptr[1]; - v_bits_unpacked[2] = v_s.ptr[0]; - v_bits_unpacked[3] = 255; - v_s = wuffs_base__slice_u8__subslice_i(v_s, 3); - if (((uint32_t)((self->private_impl.f_remap_transparency & 4294967295))) == ((((uint32_t)(v_bits_unpacked[0])) << 0) | - (((uint32_t)(v_bits_unpacked[1])) << 8) | - (((uint32_t)(v_bits_unpacked[2])) << 16) | - (((uint32_t)(v_bits_unpacked[3])) << 24))) { - v_bits_unpacked[0] = 0; - v_bits_unpacked[1] = 0; - v_bits_unpacked[2] = 0; - v_bits_unpacked[3] = 0; - } - wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__make_slice_u8(v_bits_unpacked, 4)); - } - } - } else if (v_src_bytes_per_pixel <= ((uint64_t)(v_s.len))) { - wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__slice_u8__subslice_j(v_s, v_src_bytes_per_pixel)); - v_s = wuffs_base__slice_u8__subslice_i(v_s, v_src_bytes_per_pixel); - } - } - v_x += (((uint32_t)(1)) << WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][0]); - } - } else if (self->private_impl.f_depth < 8) { - v_multiplier = 1; - if (self->private_impl.f_color_type == 0) { - v_multiplier = WUFFS_PNG__LOW_BIT_DEPTH_MULTIPLIERS[self->private_impl.f_depth]; - } - v_shift = ((8 - self->private_impl.f_depth) & 7); - v_packs_remaining = 0; - while (v_x < self->private_impl.f_frame_rect_x1) { - v_i = (((uint64_t)(v_x)) * v_dst_bytes_per_pixel); - if (v_i <= ((uint64_t)(v_dst.len))) { - if ((v_packs_remaining == 0) && (1 <= ((uint64_t)(v_s.len)))) { - v_packs_remaining = WUFFS_PNG__LOW_BIT_DEPTH_NUM_PACKS[self->private_impl.f_depth]; - v_bits_packed = v_s.ptr[0]; - v_s = wuffs_base__slice_u8__subslice_i(v_s, 1); - } - v_bits_unpacked[0] = ((uint8_t)((v_bits_packed >> v_shift) * v_multiplier)); - v_bits_packed = ((uint8_t)(v_bits_packed << self->private_impl.f_depth)); - v_packs_remaining = ((uint8_t)(v_packs_remaining - 1)); - if (((uint32_t)((self->private_impl.f_remap_transparency & 4294967295))) != 0) { - v_bits_unpacked[1] = v_bits_unpacked[0]; - v_bits_unpacked[2] = v_bits_unpacked[0]; - v_bits_unpacked[3] = 255; - if (((uint32_t)((self->private_impl.f_remap_transparency & 4294967295))) == ((((uint32_t)(v_bits_unpacked[0])) << 0) | - (((uint32_t)(v_bits_unpacked[1])) << 8) | - (((uint32_t)(v_bits_unpacked[2])) << 16) | - (((uint32_t)(v_bits_unpacked[3])) << 24))) { - v_bits_unpacked[0] = 0; - v_bits_unpacked[1] = 0; - v_bits_unpacked[2] = 0; - v_bits_unpacked[3] = 0; - } - wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__make_slice_u8(v_bits_unpacked, 4)); - } else { - wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__make_slice_u8(v_bits_unpacked, 1)); - } - } - v_x += (((uint32_t)(1)) << WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][0]); - } - } else { - while (v_x < self->private_impl.f_frame_rect_x1) { - v_i = (((uint64_t)(v_x)) * v_dst_bytes_per_pixel); - if (v_i <= ((uint64_t)(v_dst.len))) { - if (self->private_impl.f_color_type == 0) { - if (2 <= ((uint64_t)(v_s.len))) { - v_bits_unpacked[0] = v_s.ptr[1]; - v_bits_unpacked[1] = v_s.ptr[0]; - v_bits_unpacked[2] = v_s.ptr[1]; - v_bits_unpacked[3] = v_s.ptr[0]; - v_bits_unpacked[4] = v_s.ptr[1]; - v_bits_unpacked[5] = v_s.ptr[0]; - v_bits_unpacked[6] = 255; - v_bits_unpacked[7] = 255; - v_s = wuffs_base__slice_u8__subslice_i(v_s, 2); - if (self->private_impl.f_remap_transparency == ((((uint64_t)(v_bits_unpacked[0])) << 0) | - (((uint64_t)(v_bits_unpacked[1])) << 8) | - (((uint64_t)(v_bits_unpacked[2])) << 16) | - (((uint64_t)(v_bits_unpacked[3])) << 24) | - (((uint64_t)(v_bits_unpacked[4])) << 32) | - (((uint64_t)(v_bits_unpacked[5])) << 40) | - (((uint64_t)(v_bits_unpacked[6])) << 48) | - (((uint64_t)(v_bits_unpacked[7])) << 56))) { - v_bits_unpacked[0] = 0; - v_bits_unpacked[1] = 0; - v_bits_unpacked[2] = 0; - v_bits_unpacked[3] = 0; - v_bits_unpacked[4] = 0; - v_bits_unpacked[5] = 0; - v_bits_unpacked[6] = 0; - v_bits_unpacked[7] = 0; - } - } - } else if (self->private_impl.f_color_type == 2) { - if (6 <= ((uint64_t)(v_s.len))) { - v_bits_unpacked[0] = v_s.ptr[5]; - v_bits_unpacked[1] = v_s.ptr[4]; - v_bits_unpacked[2] = v_s.ptr[3]; - v_bits_unpacked[3] = v_s.ptr[2]; - v_bits_unpacked[4] = v_s.ptr[1]; - v_bits_unpacked[5] = v_s.ptr[0]; - v_bits_unpacked[6] = 255; - v_bits_unpacked[7] = 255; - v_s = wuffs_base__slice_u8__subslice_i(v_s, 6); - if (self->private_impl.f_remap_transparency == ((((uint64_t)(v_bits_unpacked[0])) << 0) | - (((uint64_t)(v_bits_unpacked[1])) << 8) | - (((uint64_t)(v_bits_unpacked[2])) << 16) | - (((uint64_t)(v_bits_unpacked[3])) << 24) | - (((uint64_t)(v_bits_unpacked[4])) << 32) | - (((uint64_t)(v_bits_unpacked[5])) << 40) | - (((uint64_t)(v_bits_unpacked[6])) << 48) | - (((uint64_t)(v_bits_unpacked[7])) << 56))) { - v_bits_unpacked[0] = 0; - v_bits_unpacked[1] = 0; - v_bits_unpacked[2] = 0; - v_bits_unpacked[3] = 0; - v_bits_unpacked[4] = 0; - v_bits_unpacked[5] = 0; - v_bits_unpacked[6] = 0; - v_bits_unpacked[7] = 0; - } - } - } else if (self->private_impl.f_color_type == 4) { - if (4 <= ((uint64_t)(v_s.len))) { - v_bits_unpacked[0] = v_s.ptr[1]; - v_bits_unpacked[1] = v_s.ptr[0]; - v_bits_unpacked[2] = v_s.ptr[1]; - v_bits_unpacked[3] = v_s.ptr[0]; - v_bits_unpacked[4] = v_s.ptr[1]; - v_bits_unpacked[5] = v_s.ptr[0]; - v_bits_unpacked[6] = v_s.ptr[3]; - v_bits_unpacked[7] = v_s.ptr[2]; - v_s = wuffs_base__slice_u8__subslice_i(v_s, 4); - } - } else { - if (8 <= ((uint64_t)(v_s.len))) { - v_bits_unpacked[0] = v_s.ptr[5]; - v_bits_unpacked[1] = v_s.ptr[4]; - v_bits_unpacked[2] = v_s.ptr[3]; - v_bits_unpacked[3] = v_s.ptr[2]; - v_bits_unpacked[4] = v_s.ptr[1]; - v_bits_unpacked[5] = v_s.ptr[0]; - v_bits_unpacked[6] = v_s.ptr[7]; - v_bits_unpacked[7] = v_s.ptr[6]; - v_s = wuffs_base__slice_u8__subslice_i(v_s, 8); - } - } - wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, wuffs_base__slice_u8__subslice_i(v_dst, v_i), v_dst_palette, wuffs_base__make_slice_u8(v_bits_unpacked, 8)); - } - v_x += (((uint32_t)(1)) << WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][0]); - } - } - v_prev_row = v_curr_row; - v_y += (((uint32_t)(1)) << WUFFS_PNG__INTERLACING[self->private_impl.f_interlace_pass][3]); - } - return wuffs_base__make_status(NULL); -} - -#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__PNG) - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__TGA) - -// ---------------- Status Codes Implementations - -const char wuffs_tga__error__bad_header[] = "#tga: bad header"; -const char wuffs_tga__error__bad_run_length_encoding[] = "#tga: bad run length encoding"; -const char wuffs_tga__error__truncated_input[] = "#tga: truncated input"; -const char wuffs_tga__error__unsupported_tga_file[] = "#tga: unsupported TGA file"; - -// ---------------- Private Consts - -// ---------------- Private Initializer Prototypes - -// ---------------- Private Function Prototypes - -static wuffs_base__status -wuffs_tga__decoder__do_decode_image_config( - wuffs_tga__decoder* self, - wuffs_base__image_config* a_dst, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_tga__decoder__do_decode_frame_config( - wuffs_tga__decoder* self, - wuffs_base__frame_config* a_dst, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_tga__decoder__do_decode_frame( - wuffs_tga__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__pixel_blend a_blend, - wuffs_base__slice_u8 a_workbuf, - wuffs_base__decode_frame_options* a_opts); - -// ---------------- VTables - -const wuffs_base__image_decoder__func_ptrs -wuffs_tga__decoder__func_ptrs_for__wuffs_base__image_decoder = { - (wuffs_base__status(*)(void*, - wuffs_base__pixel_buffer*, - wuffs_base__io_buffer*, - wuffs_base__pixel_blend, - wuffs_base__slice_u8, - wuffs_base__decode_frame_options*))(&wuffs_tga__decoder__decode_frame), - (wuffs_base__status(*)(void*, - wuffs_base__frame_config*, - wuffs_base__io_buffer*))(&wuffs_tga__decoder__decode_frame_config), - (wuffs_base__status(*)(void*, - wuffs_base__image_config*, - wuffs_base__io_buffer*))(&wuffs_tga__decoder__decode_image_config), - (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_tga__decoder__frame_dirty_rect), - (uint32_t(*)(const void*))(&wuffs_tga__decoder__num_animation_loops), - (uint64_t(*)(const void*))(&wuffs_tga__decoder__num_decoded_frame_configs), - (uint64_t(*)(const void*))(&wuffs_tga__decoder__num_decoded_frames), - (wuffs_base__status(*)(void*, - uint64_t, - uint64_t))(&wuffs_tga__decoder__restart_frame), - (wuffs_base__status(*)(void*, - uint32_t, - uint64_t))(&wuffs_tga__decoder__set_quirk), - (wuffs_base__empty_struct(*)(void*, - uint32_t, - bool))(&wuffs_tga__decoder__set_report_metadata), - (wuffs_base__status(*)(void*, - wuffs_base__io_buffer*, - wuffs_base__more_information*, - wuffs_base__io_buffer*))(&wuffs_tga__decoder__tell_me_more), - (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_tga__decoder__workbuf_len), -}; - -// ---------------- Initializer Implementations - -wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT -wuffs_tga__decoder__initialize( - wuffs_tga__decoder* self, - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options){ - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (sizeof(*self) != sizeof_star_self) { - return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver); - } - if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) || - (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) { - return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version); - } - - if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) { - // The whole point of this if-check is to detect an uninitialized *self. - // We disable the warning on GCC. Clang-5.0 does not have this warning. -#if !defined(__clang__) && defined(__GNUC__) -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wmaybe-uninitialized" -#endif - if (self->private_impl.magic != 0) { - return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed); - } -#if !defined(__clang__) && defined(__GNUC__) -#pragma GCC diagnostic pop -#endif - } else { - if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) { - memset(self, 0, sizeof(*self)); - options |= WUFFS_INITIALIZE__ALREADY_ZEROED; - } else { - memset(&(self->private_impl), 0, sizeof(self->private_impl)); - } - } - - self->private_impl.magic = WUFFS_BASE__MAGIC; - self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name = - wuffs_base__image_decoder__vtable_name; - self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers = - (const void*)(&wuffs_tga__decoder__func_ptrs_for__wuffs_base__image_decoder); - return wuffs_base__make_status(NULL); -} - -wuffs_tga__decoder* -wuffs_tga__decoder__alloc() { - wuffs_tga__decoder* x = - (wuffs_tga__decoder*)(calloc(sizeof(wuffs_tga__decoder), 1)); - if (!x) { - return NULL; - } - if (wuffs_tga__decoder__initialize( - x, sizeof(wuffs_tga__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) { - free(x); - return NULL; - } - return x; -} - -size_t -sizeof__wuffs_tga__decoder() { - return sizeof(wuffs_tga__decoder); -} - -// ---------------- Function Implementations - -// -------- func tga.decoder.set_quirk - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_tga__decoder__set_quirk( - wuffs_tga__decoder* self, - uint32_t a_key, - uint64_t a_value) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - - return wuffs_base__make_status(wuffs_base__error__unsupported_option); -} - -// -------- func tga.decoder.decode_image_config - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_tga__decoder__decode_image_config( - wuffs_tga__decoder* self, - wuffs_base__image_config* a_dst, - wuffs_base__io_buffer* a_src) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - if (!a_src) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - if ((self->private_impl.active_coroutine != 0) && - (self->private_impl.active_coroutine != 1)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); - } - self->private_impl.active_coroutine = 0; - wuffs_base__status status = wuffs_base__make_status(NULL); - - wuffs_base__status v_status = wuffs_base__make_status(NULL); - - uint32_t coro_susp_point = self->private_impl.p_decode_image_config[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - while (true) { - { - wuffs_base__status t_0 = wuffs_tga__decoder__do_decode_image_config(self, a_dst, a_src); - v_status = t_0; - } - if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { - status = wuffs_base__make_status(wuffs_tga__error__truncated_input); - goto exit; - } - status = v_status; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); - } - - ok: - self->private_impl.p_decode_image_config[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0; - - goto exit; - exit: - if (wuffs_base__status__is_error(&status)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - } - return status; -} - -// -------- func tga.decoder.do_decode_image_config - -static wuffs_base__status -wuffs_tga__decoder__do_decode_image_config( - wuffs_tga__decoder* self, - wuffs_base__image_config* a_dst, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint32_t v_c = 0; - uint32_t v_c5 = 0; - uint32_t v_i = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config[0]; - if (coro_susp_point) { - v_i = self->private_data.s_do_decode_image_config[0].v_i; - } - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - if (self->private_impl.f_call_sequence != 0) { - status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence); - goto exit; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_0 = *iop_a_src++; - self->private_impl.f_header_id_length = t_0; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_1 = *iop_a_src++; - self->private_impl.f_header_color_map_type = t_1; - } - if (self->private_impl.f_header_color_map_type > 1) { - status = wuffs_base__make_status(wuffs_tga__error__bad_header); - goto exit; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(3); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_2 = *iop_a_src++; - self->private_impl.f_header_image_type = t_2; - } - if ((self->private_impl.f_header_image_type == 1) || - (self->private_impl.f_header_image_type == 2) || - (self->private_impl.f_header_image_type == 3) || - (self->private_impl.f_header_image_type == 9) || - (self->private_impl.f_header_image_type == 10) || - (self->private_impl.f_header_image_type == 11)) { - } else { - status = wuffs_base__make_status(wuffs_tga__error__bad_header); - goto exit; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(4); - uint16_t t_3; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { - t_3 = wuffs_base__peek_u16le__no_bounds_check(iop_a_src); - iop_a_src += 2; - } else { - self->private_data.s_do_decode_image_config[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(5); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; - uint32_t num_bits_3 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_3; - if (num_bits_3 == 8) { - t_3 = ((uint16_t)(*scratch)); - break; - } - num_bits_3 += 8; - *scratch |= ((uint64_t)(num_bits_3)) << 56; - } - } - self->private_impl.f_header_color_map_first_entry_index = t_3; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(6); - uint16_t t_4; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { - t_4 = wuffs_base__peek_u16le__no_bounds_check(iop_a_src); - iop_a_src += 2; - } else { - self->private_data.s_do_decode_image_config[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(7); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; - uint32_t num_bits_4 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_4; - if (num_bits_4 == 8) { - t_4 = ((uint16_t)(*scratch)); - break; - } - num_bits_4 += 8; - *scratch |= ((uint64_t)(num_bits_4)) << 56; - } - } - self->private_impl.f_header_color_map_length = t_4; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(8); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_5 = *iop_a_src++; - self->private_impl.f_header_color_map_entry_size = t_5; - } - if (self->private_impl.f_header_color_map_type != 0) { - if ((self->private_impl.f_header_color_map_first_entry_index != 0) || (self->private_impl.f_header_color_map_length > 256)) { - status = wuffs_base__make_status(wuffs_tga__error__unsupported_tga_file); - goto exit; - } else if ((self->private_impl.f_header_color_map_entry_size != 15) && - (self->private_impl.f_header_color_map_entry_size != 16) && - (self->private_impl.f_header_color_map_entry_size != 24) && - (self->private_impl.f_header_color_map_entry_size != 32)) { - status = wuffs_base__make_status(wuffs_tga__error__bad_header); - goto exit; - } - } else { - if ((self->private_impl.f_header_color_map_first_entry_index != 0) || (self->private_impl.f_header_color_map_length != 0) || (self->private_impl.f_header_color_map_entry_size != 0)) { - status = wuffs_base__make_status(wuffs_tga__error__bad_header); - goto exit; - } - } - self->private_data.s_do_decode_image_config[0].scratch = 4; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(9); - if (self->private_data.s_do_decode_image_config[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { - self->private_data.s_do_decode_image_config[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); - iop_a_src = io2_a_src; - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - iop_a_src += self->private_data.s_do_decode_image_config[0].scratch; - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(10); - uint32_t t_6; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { - t_6 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src))); - iop_a_src += 2; - } else { - self->private_data.s_do_decode_image_config[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(11); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; - uint32_t num_bits_6 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_6; - if (num_bits_6 == 8) { - t_6 = ((uint32_t)(*scratch)); - break; - } - num_bits_6 += 8; - *scratch |= ((uint64_t)(num_bits_6)) << 56; - } - } - self->private_impl.f_width = t_6; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(12); - uint32_t t_7; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { - t_7 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src))); - iop_a_src += 2; - } else { - self->private_data.s_do_decode_image_config[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(13); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; - uint32_t num_bits_7 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_7; - if (num_bits_7 == 8) { - t_7 = ((uint32_t)(*scratch)); - break; - } - num_bits_7 += 8; - *scratch |= ((uint64_t)(num_bits_7)) << 56; - } - } - self->private_impl.f_height = t_7; - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(14); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_8 = *iop_a_src++; - self->private_impl.f_header_pixel_depth = t_8; - } - if ((self->private_impl.f_header_pixel_depth != 1) && - (self->private_impl.f_header_pixel_depth != 8) && - (self->private_impl.f_header_pixel_depth != 15) && - (self->private_impl.f_header_pixel_depth != 16) && - (self->private_impl.f_header_pixel_depth != 24) && - (self->private_impl.f_header_pixel_depth != 32)) { - status = wuffs_base__make_status(wuffs_tga__error__bad_header); - goto exit; - } - if ((self->private_impl.f_header_image_type | 8) == 9) { - self->private_impl.f_scratch_bytes_per_pixel = 1; - self->private_impl.f_src_bytes_per_pixel = 1; - self->private_impl.f_src_pixfmt = 2164523016; - self->private_impl.f_opaque = ((self->private_impl.f_header_color_map_entry_size == 15) || (self->private_impl.f_header_color_map_entry_size == 24)); - } else if ((self->private_impl.f_header_image_type | 8) == 10) { - if ((self->private_impl.f_header_pixel_depth == 15) || (self->private_impl.f_header_pixel_depth == 16)) { - self->private_impl.f_scratch_bytes_per_pixel = 4; - self->private_impl.f_src_bytes_per_pixel = 0; - self->private_impl.f_src_pixfmt = 2164295816; - } else if (self->private_impl.f_header_pixel_depth == 24) { - self->private_impl.f_scratch_bytes_per_pixel = 3; - self->private_impl.f_src_bytes_per_pixel = 3; - self->private_impl.f_src_pixfmt = 2147485832; - self->private_impl.f_opaque = true; - } else if (self->private_impl.f_header_pixel_depth == 32) { - self->private_impl.f_scratch_bytes_per_pixel = 4; - self->private_impl.f_src_bytes_per_pixel = 4; - self->private_impl.f_src_pixfmt = 2164295816; - } else { - status = wuffs_base__make_status(wuffs_tga__error__unsupported_tga_file); - goto exit; - } - } else { - if (self->private_impl.f_header_pixel_depth == 8) { - self->private_impl.f_scratch_bytes_per_pixel = 1; - self->private_impl.f_src_bytes_per_pixel = 1; - self->private_impl.f_src_pixfmt = 536870920; - self->private_impl.f_opaque = true; - } else { - status = wuffs_base__make_status(wuffs_tga__error__unsupported_tga_file); - goto exit; - } - } - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(15); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_9 = *iop_a_src++; - self->private_impl.f_header_image_descriptor = t_9; - } - if ((self->private_impl.f_header_image_descriptor & 16) != 0) { - status = wuffs_base__make_status(wuffs_tga__error__unsupported_tga_file); - goto exit; - } - self->private_data.s_do_decode_image_config[0].scratch = ((uint32_t)(self->private_impl.f_header_id_length)); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(16); - if (self->private_data.s_do_decode_image_config[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { - self->private_data.s_do_decode_image_config[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); - iop_a_src = io2_a_src; - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - iop_a_src += self->private_data.s_do_decode_image_config[0].scratch; - if (self->private_impl.f_header_color_map_type != 0) { - while (v_i < ((uint32_t)(self->private_impl.f_header_color_map_length))) { - if (self->private_impl.f_header_color_map_entry_size == 24) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(17); - uint32_t t_10; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 3)) { - t_10 = ((uint32_t)(wuffs_base__peek_u24le__no_bounds_check(iop_a_src))); - iop_a_src += 3; - } else { - self->private_data.s_do_decode_image_config[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(18); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; - uint32_t num_bits_10 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_10; - if (num_bits_10 == 16) { - t_10 = ((uint32_t)(*scratch)); - break; - } - num_bits_10 += 8; - *scratch |= ((uint64_t)(num_bits_10)) << 56; - } - } - v_c = t_10; - } - self->private_data.f_src_palette[(((v_i & 255) * 4) + 0)] = ((uint8_t)(((v_c >> 0) & 255))); - self->private_data.f_src_palette[(((v_i & 255) * 4) + 1)] = ((uint8_t)(((v_c >> 8) & 255))); - self->private_data.f_src_palette[(((v_i & 255) * 4) + 2)] = ((uint8_t)(((v_c >> 16) & 255))); - self->private_data.f_src_palette[(((v_i & 255) * 4) + 3)] = 255; - } else if (self->private_impl.f_header_color_map_entry_size == 32) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(19); - uint32_t t_11; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 4)) { - t_11 = wuffs_base__peek_u32le__no_bounds_check(iop_a_src); - iop_a_src += 4; - } else { - self->private_data.s_do_decode_image_config[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(20); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; - uint32_t num_bits_11 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_11; - if (num_bits_11 == 24) { - t_11 = ((uint32_t)(*scratch)); - break; - } - num_bits_11 += 8; - *scratch |= ((uint64_t)(num_bits_11)) << 56; - } - } - v_c = t_11; - } - self->private_data.f_src_palette[(((v_i & 255) * 4) + 0)] = ((uint8_t)(((v_c >> 0) & 255))); - self->private_data.f_src_palette[(((v_i & 255) * 4) + 1)] = ((uint8_t)(((v_c >> 8) & 255))); - self->private_data.f_src_palette[(((v_i & 255) * 4) + 2)] = ((uint8_t)(((v_c >> 16) & 255))); - self->private_data.f_src_palette[(((v_i & 255) * 4) + 3)] = ((uint8_t)(((v_c >> 24) & 255))); - } else { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(21); - uint32_t t_12; - if (WUFFS_BASE__LIKELY(io2_a_src - iop_a_src >= 2)) { - t_12 = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src))); - iop_a_src += 2; - } else { - self->private_data.s_do_decode_image_config[0].scratch = 0; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(22); - while (true) { - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint64_t* scratch = &self->private_data.s_do_decode_image_config[0].scratch; - uint32_t num_bits_12 = ((uint32_t)(*scratch >> 56)); - *scratch <<= 8; - *scratch >>= 8; - *scratch |= ((uint64_t)(*iop_a_src++)) << num_bits_12; - if (num_bits_12 == 8) { - t_12 = ((uint32_t)(*scratch)); - break; - } - num_bits_12 += 8; - *scratch |= ((uint64_t)(num_bits_12)) << 56; - } - } - v_c = t_12; - } - v_c5 = (31 & (v_c >> 0)); - self->private_data.f_src_palette[(((v_i & 255) * 4) + 0)] = ((uint8_t)(((v_c5 << 3) | (v_c5 >> 2)))); - v_c5 = (31 & (v_c >> 5)); - self->private_data.f_src_palette[(((v_i & 255) * 4) + 1)] = ((uint8_t)(((v_c5 << 3) | (v_c5 >> 2)))); - v_c5 = (31 & (v_c >> 10)); - self->private_data.f_src_palette[(((v_i & 255) * 4) + 2)] = ((uint8_t)(((v_c5 << 3) | (v_c5 >> 2)))); - self->private_data.f_src_palette[(((v_i & 255) * 4) + 3)] = 255; - } - v_i += 1; - } - while (v_i < 256) { - self->private_data.f_src_palette[((v_i * 4) + 0)] = 0; - self->private_data.f_src_palette[((v_i * 4) + 1)] = 0; - self->private_data.f_src_palette[((v_i * 4) + 2)] = 0; - self->private_data.f_src_palette[((v_i * 4) + 3)] = 255; - v_i += 1; - } - } - self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))); - if (a_dst != NULL) { - wuffs_base__image_config__set( - a_dst, - self->private_impl.f_src_pixfmt, - 0, - self->private_impl.f_width, - self->private_impl.f_height, - self->private_impl.f_frame_config_io_position, - self->private_impl.f_opaque); - } - self->private_impl.f_call_sequence = 32; - - goto ok; - ok: - self->private_impl.p_do_decode_image_config[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_do_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_data.s_do_decode_image_config[0].v_i = v_i; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func tga.decoder.decode_frame_config - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_tga__decoder__decode_frame_config( - wuffs_tga__decoder* self, - wuffs_base__frame_config* a_dst, - wuffs_base__io_buffer* a_src) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - if (!a_src) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - if ((self->private_impl.active_coroutine != 0) && - (self->private_impl.active_coroutine != 2)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); - } - self->private_impl.active_coroutine = 0; - wuffs_base__status status = wuffs_base__make_status(NULL); - - wuffs_base__status v_status = wuffs_base__make_status(NULL); - - uint32_t coro_susp_point = self->private_impl.p_decode_frame_config[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - while (true) { - { - wuffs_base__status t_0 = wuffs_tga__decoder__do_decode_frame_config(self, a_dst, a_src); - v_status = t_0; - } - if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { - status = wuffs_base__make_status(wuffs_tga__error__truncated_input); - goto exit; - } - status = v_status; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); - } - - ok: - self->private_impl.p_decode_frame_config[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0; - - goto exit; - exit: - if (wuffs_base__status__is_error(&status)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - } - return status; -} - -// -------- func tga.decoder.do_decode_frame_config - -static wuffs_base__status -wuffs_tga__decoder__do_decode_frame_config( - wuffs_tga__decoder* self, - wuffs_base__frame_config* a_dst, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - if (self->private_impl.f_call_sequence == 32) { - } else if (self->private_impl.f_call_sequence < 32) { - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - status = wuffs_tga__decoder__do_decode_image_config(self, NULL, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - } else if (self->private_impl.f_call_sequence == 40) { - if (self->private_impl.f_frame_config_io_position != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) { - status = wuffs_base__make_status(wuffs_base__error__bad_restart); - goto exit; - } - } else if (self->private_impl.f_call_sequence == 64) { - self->private_impl.f_call_sequence = 96; - status = wuffs_base__make_status(wuffs_base__note__end_of_data); - goto ok; - } else { - status = wuffs_base__make_status(wuffs_base__note__end_of_data); - goto ok; - } - if (a_dst != NULL) { - wuffs_base__frame_config__set( - a_dst, - wuffs_base__utility__make_rect_ie_u32( - 0, - 0, - self->private_impl.f_width, - self->private_impl.f_height), - ((wuffs_base__flicks)(0)), - 0, - self->private_impl.f_frame_config_io_position, - 0, - self->private_impl.f_opaque, - false, - 4278190080); - } - self->private_impl.f_call_sequence = 64; - - ok: - self->private_impl.p_do_decode_frame_config[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_do_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func tga.decoder.decode_frame - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_tga__decoder__decode_frame( - wuffs_tga__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__pixel_blend a_blend, - wuffs_base__slice_u8 a_workbuf, - wuffs_base__decode_frame_options* a_opts) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - if (!a_dst || !a_src) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - if ((self->private_impl.active_coroutine != 0) && - (self->private_impl.active_coroutine != 3)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); - } - self->private_impl.active_coroutine = 0; - wuffs_base__status status = wuffs_base__make_status(NULL); - - wuffs_base__status v_status = wuffs_base__make_status(NULL); - - uint32_t coro_susp_point = self->private_impl.p_decode_frame[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - while (true) { - { - wuffs_base__status t_0 = wuffs_tga__decoder__do_decode_frame(self, - a_dst, - a_src, - a_blend, - a_workbuf, - a_opts); - v_status = t_0; - } - if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { - status = wuffs_base__make_status(wuffs_tga__error__truncated_input); - goto exit; - } - status = v_status; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); - } - - ok: - self->private_impl.p_decode_frame[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0; - - goto exit; - exit: - if (wuffs_base__status__is_error(&status)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - } - return status; -} - -// -------- func tga.decoder.do_decode_frame - -static wuffs_base__status -wuffs_tga__decoder__do_decode_frame( - wuffs_tga__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__pixel_blend a_blend, - wuffs_base__slice_u8 a_workbuf, - wuffs_base__decode_frame_options* a_opts) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - wuffs_base__status v_status = wuffs_base__make_status(NULL); - wuffs_base__pixel_format v_dst_pixfmt = {0}; - uint32_t v_dst_bits_per_pixel = 0; - uint64_t v_dst_bytes_per_pixel = 0; - uint32_t v_dst_x = 0; - uint32_t v_dst_y = 0; - wuffs_base__table_u8 v_tab = {0}; - wuffs_base__slice_u8 v_dst_palette = {0}; - wuffs_base__slice_u8 v_dst = {0}; - uint64_t v_dst_start = 0; - wuffs_base__slice_u8 v_src_palette = {0}; - uint64_t v_mark = 0; - uint64_t v_num_pixels64 = 0; - uint32_t v_num_pixels32 = 0; - uint32_t v_lit_length = 0; - uint32_t v_run_length = 0; - uint64_t v_num_dst_bytes = 0; - uint32_t v_num_src_bytes = 0; - uint32_t v_c = 0; - uint32_t v_c5 = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_do_decode_frame[0]; - if (coro_susp_point) { - v_dst_bytes_per_pixel = self->private_data.s_do_decode_frame[0].v_dst_bytes_per_pixel; - v_dst_x = self->private_data.s_do_decode_frame[0].v_dst_x; - v_dst_y = self->private_data.s_do_decode_frame[0].v_dst_y; - v_mark = self->private_data.s_do_decode_frame[0].v_mark; - v_num_pixels32 = self->private_data.s_do_decode_frame[0].v_num_pixels32; - v_lit_length = self->private_data.s_do_decode_frame[0].v_lit_length; - v_run_length = self->private_data.s_do_decode_frame[0].v_run_length; - v_num_dst_bytes = self->private_data.s_do_decode_frame[0].v_num_dst_bytes; - } - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - if (self->private_impl.f_call_sequence == 64) { - } else if (self->private_impl.f_call_sequence < 64) { - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - status = wuffs_tga__decoder__do_decode_frame_config(self, NULL, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - } else { - status = wuffs_base__make_status(wuffs_base__note__end_of_data); - goto ok; - } - if (self->private_impl.f_header_color_map_type != 0) { - v_src_palette = wuffs_base__make_slice_u8(self->private_data.f_src_palette, 1024); - } - v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler, - wuffs_base__pixel_buffer__pixel_format(a_dst), - wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024)), - wuffs_base__utility__make_pixel_format(self->private_impl.f_src_pixfmt), - v_src_palette, - a_blend); - if ( ! wuffs_base__status__is_ok(&v_status)) { - status = v_status; - if (wuffs_base__status__is_error(&status)) { - goto exit; - } else if (wuffs_base__status__is_suspension(&status)) { - status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension); - goto exit; - } - goto ok; - } - v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst); - v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt); - if ((v_dst_bits_per_pixel & 7) != 0) { - status = wuffs_base__make_status(wuffs_base__error__unsupported_option); - goto exit; - } - v_dst_bytes_per_pixel = ((uint64_t)((v_dst_bits_per_pixel / 8))); - if ((self->private_impl.f_header_image_descriptor & 32) == 0) { - v_dst_y = ((uint32_t)(self->private_impl.f_height - 1)); - } - if ((self->private_impl.f_header_image_type & 8) == 0) { - v_lit_length = self->private_impl.f_width; - } - label__resume__continue:; - while (true) { - v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0); - v_dst_palette = wuffs_base__pixel_buffer__palette_or_else(a_dst, wuffs_base__make_slice_u8(self->private_data.f_dst_palette, 1024)); - while (v_dst_y < self->private_impl.f_height) { - v_dst = wuffs_base__table_u8__row_u32(v_tab, v_dst_y); - v_dst_start = (((uint64_t)(v_dst_x)) * v_dst_bytes_per_pixel); - if (v_dst_start <= ((uint64_t)(v_dst.len))) { - v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_dst_start); - } else { - v_dst = wuffs_base__utility__empty_slice_u8(); - } - while (v_dst_x < self->private_impl.f_width) { - if (self->private_impl.f_src_bytes_per_pixel > 0) { - if (v_lit_length > 0) { - v_mark = ((uint64_t)(iop_a_src - io0_a_src)); - v_num_pixels64 = (((uint64_t)(io2_a_src - iop_a_src)) / ((uint64_t)(self->private_impl.f_src_bytes_per_pixel))); - v_num_pixels32 = ((uint32_t)(wuffs_base__u64__min(v_num_pixels64, ((uint64_t)(v_lit_length))))); - v_num_dst_bytes = (((uint64_t)(v_num_pixels32)) * v_dst_bytes_per_pixel); - v_num_src_bytes = (v_num_pixels32 * self->private_impl.f_src_bytes_per_pixel); - self->private_data.s_do_decode_frame[0].scratch = v_num_src_bytes; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - if (self->private_data.s_do_decode_frame[0].scratch > ((uint64_t)(io2_a_src - iop_a_src))) { - self->private_data.s_do_decode_frame[0].scratch -= ((uint64_t)(io2_a_src - iop_a_src)); - iop_a_src = io2_a_src; - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - iop_a_src += self->private_data.s_do_decode_frame[0].scratch; - wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__io__since(v_mark, ((uint64_t)(iop_a_src - io0_a_src)), io0_a_src)); - if (v_num_dst_bytes <= ((uint64_t)(v_dst.len))) { - v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_num_dst_bytes); - } else { - v_dst = wuffs_base__utility__empty_slice_u8(); - } - v_dst_x += v_num_pixels32; - v_lit_length = (((uint32_t)(v_lit_length - v_num_pixels32)) & 65535); - if (v_lit_length > 0) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(3); - goto label__resume__continue; - } - } else if (v_run_length > 0) { - v_run_length -= 1; - wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, self->private_impl.f_scratch_bytes_per_pixel)); - if (v_dst_bytes_per_pixel <= ((uint64_t)(v_dst.len))) { - v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_dst_bytes_per_pixel); - } - v_dst_x += 1; - } else { - if (((uint64_t)(io2_a_src - iop_a_src)) <= 0) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(4); - goto label__resume__continue; - } - if (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) < 128) { - v_lit_length = (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) + 1); - iop_a_src += 1; - if ((v_lit_length + v_dst_x) > self->private_impl.f_width) { - status = wuffs_base__make_status(wuffs_tga__error__bad_run_length_encoding); - goto exit; - } - } else { - if (self->private_impl.f_src_bytes_per_pixel == 1) { - if (((uint64_t)(io2_a_src - iop_a_src)) < 2) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(5); - goto label__resume__continue; - } - v_run_length = ((((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) & 127) + 1); - iop_a_src += 1; - self->private_data.f_scratch[0] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); - iop_a_src += 1; - } else if (self->private_impl.f_src_bytes_per_pixel == 3) { - if (((uint64_t)(io2_a_src - iop_a_src)) < 4) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(6); - goto label__resume__continue; - } - v_run_length = ((((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) & 127) + 1); - iop_a_src += 1; - self->private_data.f_scratch[0] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); - iop_a_src += 1; - self->private_data.f_scratch[1] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); - iop_a_src += 1; - self->private_data.f_scratch[2] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); - iop_a_src += 1; - } else { - if (((uint64_t)(io2_a_src - iop_a_src)) < 5) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(7); - goto label__resume__continue; - } - v_run_length = ((((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) & 127) + 1); - iop_a_src += 1; - self->private_data.f_scratch[0] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); - iop_a_src += 1; - self->private_data.f_scratch[1] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); - iop_a_src += 1; - self->private_data.f_scratch[2] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); - iop_a_src += 1; - self->private_data.f_scratch[3] = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); - iop_a_src += 1; - } - if ((v_run_length + v_dst_x) > self->private_impl.f_width) { - status = wuffs_base__make_status(wuffs_tga__error__bad_run_length_encoding); - goto exit; - } - } - } - } else { - if (v_lit_length > 0) { - if (((uint64_t)(io2_a_src - iop_a_src)) < 2) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(8); - goto label__resume__continue; - } - v_c = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src))); - iop_a_src += 2; - v_c5 = (31 & (v_c >> 0)); - self->private_data.f_scratch[0] = ((uint8_t)(((v_c5 << 3) | (v_c5 >> 2)))); - v_c5 = (31 & (v_c >> 5)); - self->private_data.f_scratch[1] = ((uint8_t)(((v_c5 << 3) | (v_c5 >> 2)))); - v_c5 = (31 & (v_c >> 10)); - self->private_data.f_scratch[2] = ((uint8_t)(((v_c5 << 3) | (v_c5 >> 2)))); - self->private_data.f_scratch[3] = 255; - wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, 4)); - if (v_dst_bytes_per_pixel <= ((uint64_t)(v_dst.len))) { - v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_dst_bytes_per_pixel); - } - v_dst_x += 1; - v_lit_length -= 1; - } else if (v_run_length > 0) { - v_run_length -= 1; - wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, v_dst_palette, wuffs_base__make_slice_u8(self->private_data.f_scratch, self->private_impl.f_scratch_bytes_per_pixel)); - if (v_dst_bytes_per_pixel <= ((uint64_t)(v_dst.len))) { - v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_dst_bytes_per_pixel); - } - v_dst_x += 1; - } else { - if (((uint64_t)(io2_a_src - iop_a_src)) <= 0) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(9); - goto label__resume__continue; - } - if (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) < 128) { - v_lit_length = (((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) + 1); - iop_a_src += 1; - if ((v_lit_length + v_dst_x) > self->private_impl.f_width) { - status = wuffs_base__make_status(wuffs_tga__error__bad_run_length_encoding); - goto exit; - } - } else { - if (((uint64_t)(io2_a_src - iop_a_src)) < 3) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(10); - goto label__resume__continue; - } - v_run_length = ((((uint32_t)(wuffs_base__peek_u8be__no_bounds_check(iop_a_src))) & 127) + 1); - iop_a_src += 1; - v_c = ((uint32_t)(wuffs_base__peek_u16le__no_bounds_check(iop_a_src))); - iop_a_src += 2; - v_c5 = (31 & (v_c >> 0)); - self->private_data.f_scratch[0] = ((uint8_t)(((v_c5 << 3) | (v_c5 >> 2)))); - v_c5 = (31 & (v_c >> 5)); - self->private_data.f_scratch[1] = ((uint8_t)(((v_c5 << 3) | (v_c5 >> 2)))); - v_c5 = (31 & (v_c >> 10)); - self->private_data.f_scratch[2] = ((uint8_t)(((v_c5 << 3) | (v_c5 >> 2)))); - self->private_data.f_scratch[3] = 255; - if ((v_run_length + v_dst_x) > self->private_impl.f_width) { - status = wuffs_base__make_status(wuffs_tga__error__bad_run_length_encoding); - goto exit; - } - } - } - } - } - v_dst_x = 0; - if ((self->private_impl.f_header_image_descriptor & 32) == 0) { - v_dst_y -= 1; - } else { - v_dst_y += 1; - } - if ((self->private_impl.f_header_image_type & 8) == 0) { - v_lit_length = self->private_impl.f_width; - } - } - goto label__resume__break; - } - label__resume__break:; - self->private_impl.f_call_sequence = 96; - - ok: - self->private_impl.p_do_decode_frame[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_do_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_data.s_do_decode_frame[0].v_dst_bytes_per_pixel = v_dst_bytes_per_pixel; - self->private_data.s_do_decode_frame[0].v_dst_x = v_dst_x; - self->private_data.s_do_decode_frame[0].v_dst_y = v_dst_y; - self->private_data.s_do_decode_frame[0].v_mark = v_mark; - self->private_data.s_do_decode_frame[0].v_num_pixels32 = v_num_pixels32; - self->private_data.s_do_decode_frame[0].v_lit_length = v_lit_length; - self->private_data.s_do_decode_frame[0].v_run_length = v_run_length; - self->private_data.s_do_decode_frame[0].v_num_dst_bytes = v_num_dst_bytes; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func tga.decoder.frame_dirty_rect - -WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32 -wuffs_tga__decoder__frame_dirty_rect( - const wuffs_tga__decoder* self) { - if (!self) { - return wuffs_base__utility__empty_rect_ie_u32(); - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return wuffs_base__utility__empty_rect_ie_u32(); - } - - return wuffs_base__utility__make_rect_ie_u32( - 0, - 0, - self->private_impl.f_width, - self->private_impl.f_height); -} - -// -------- func tga.decoder.num_animation_loops - -WUFFS_BASE__MAYBE_STATIC uint32_t -wuffs_tga__decoder__num_animation_loops( - const wuffs_tga__decoder* self) { - if (!self) { - return 0; - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return 0; - } - - return 0; -} - -// -------- func tga.decoder.num_decoded_frame_configs - -WUFFS_BASE__MAYBE_STATIC uint64_t -wuffs_tga__decoder__num_decoded_frame_configs( - const wuffs_tga__decoder* self) { - if (!self) { - return 0; - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return 0; - } - - if (self->private_impl.f_call_sequence > 32) { - return 1; - } - return 0; -} - -// -------- func tga.decoder.num_decoded_frames - -WUFFS_BASE__MAYBE_STATIC uint64_t -wuffs_tga__decoder__num_decoded_frames( - const wuffs_tga__decoder* self) { - if (!self) { - return 0; - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return 0; - } - - if (self->private_impl.f_call_sequence > 64) { - return 1; - } - return 0; -} - -// -------- func tga.decoder.restart_frame - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_tga__decoder__restart_frame( - wuffs_tga__decoder* self, - uint64_t a_index, - uint64_t a_io_position) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - - if (self->private_impl.f_call_sequence < 32) { - return wuffs_base__make_status(wuffs_base__error__bad_call_sequence); - } - if (a_index != 0) { - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - self->private_impl.f_call_sequence = 40; - self->private_impl.f_frame_config_io_position = a_io_position; - return wuffs_base__make_status(NULL); -} - -// -------- func tga.decoder.set_report_metadata - -WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct -wuffs_tga__decoder__set_report_metadata( - wuffs_tga__decoder* self, - uint32_t a_fourcc, - bool a_report) { - return wuffs_base__make_empty_struct(); -} - -// -------- func tga.decoder.tell_me_more - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_tga__decoder__tell_me_more( - wuffs_tga__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__more_information* a_minfo, - wuffs_base__io_buffer* a_src) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - if (!a_dst || !a_src) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - if ((self->private_impl.active_coroutine != 0) && - (self->private_impl.active_coroutine != 4)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); - } - self->private_impl.active_coroutine = 0; - wuffs_base__status status = wuffs_base__make_status(NULL); - - status = wuffs_base__make_status(wuffs_base__error__no_more_information); - goto exit; - - goto ok; - ok: - goto exit; - exit: - if (wuffs_base__status__is_error(&status)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - } - return status; -} - -// -------- func tga.decoder.workbuf_len - -WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 -wuffs_tga__decoder__workbuf_len( - const wuffs_tga__decoder* self) { - if (!self) { - return wuffs_base__utility__empty_range_ii_u64(); - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return wuffs_base__utility__empty_range_ii_u64(); - } - - return wuffs_base__utility__make_range_ii_u64(0, 0); -} - -#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__TGA) - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__WBMP) - -// ---------------- Status Codes Implementations - -const char wuffs_wbmp__error__bad_header[] = "#wbmp: bad header"; -const char wuffs_wbmp__error__truncated_input[] = "#wbmp: truncated input"; - -// ---------------- Private Consts - -// ---------------- Private Initializer Prototypes - -// ---------------- Private Function Prototypes - -static wuffs_base__status -wuffs_wbmp__decoder__do_decode_image_config( - wuffs_wbmp__decoder* self, - wuffs_base__image_config* a_dst, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_wbmp__decoder__do_decode_frame_config( - wuffs_wbmp__decoder* self, - wuffs_base__frame_config* a_dst, - wuffs_base__io_buffer* a_src); - -static wuffs_base__status -wuffs_wbmp__decoder__do_decode_frame( - wuffs_wbmp__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__pixel_blend a_blend, - wuffs_base__slice_u8 a_workbuf, - wuffs_base__decode_frame_options* a_opts); - -// ---------------- VTables - -const wuffs_base__image_decoder__func_ptrs -wuffs_wbmp__decoder__func_ptrs_for__wuffs_base__image_decoder = { - (wuffs_base__status(*)(void*, - wuffs_base__pixel_buffer*, - wuffs_base__io_buffer*, - wuffs_base__pixel_blend, - wuffs_base__slice_u8, - wuffs_base__decode_frame_options*))(&wuffs_wbmp__decoder__decode_frame), - (wuffs_base__status(*)(void*, - wuffs_base__frame_config*, - wuffs_base__io_buffer*))(&wuffs_wbmp__decoder__decode_frame_config), - (wuffs_base__status(*)(void*, - wuffs_base__image_config*, - wuffs_base__io_buffer*))(&wuffs_wbmp__decoder__decode_image_config), - (wuffs_base__rect_ie_u32(*)(const void*))(&wuffs_wbmp__decoder__frame_dirty_rect), - (uint32_t(*)(const void*))(&wuffs_wbmp__decoder__num_animation_loops), - (uint64_t(*)(const void*))(&wuffs_wbmp__decoder__num_decoded_frame_configs), - (uint64_t(*)(const void*))(&wuffs_wbmp__decoder__num_decoded_frames), - (wuffs_base__status(*)(void*, - uint64_t, - uint64_t))(&wuffs_wbmp__decoder__restart_frame), - (wuffs_base__status(*)(void*, - uint32_t, - uint64_t))(&wuffs_wbmp__decoder__set_quirk), - (wuffs_base__empty_struct(*)(void*, - uint32_t, - bool))(&wuffs_wbmp__decoder__set_report_metadata), - (wuffs_base__status(*)(void*, - wuffs_base__io_buffer*, - wuffs_base__more_information*, - wuffs_base__io_buffer*))(&wuffs_wbmp__decoder__tell_me_more), - (wuffs_base__range_ii_u64(*)(const void*))(&wuffs_wbmp__decoder__workbuf_len), -}; - -// ---------------- Initializer Implementations - -wuffs_base__status WUFFS_BASE__WARN_UNUSED_RESULT -wuffs_wbmp__decoder__initialize( - wuffs_wbmp__decoder* self, - size_t sizeof_star_self, - uint64_t wuffs_version, - uint32_t options){ - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (sizeof(*self) != sizeof_star_self) { - return wuffs_base__make_status(wuffs_base__error__bad_sizeof_receiver); - } - if (((wuffs_version >> 32) != WUFFS_VERSION_MAJOR) || - (((wuffs_version >> 16) & 0xFFFF) > WUFFS_VERSION_MINOR)) { - return wuffs_base__make_status(wuffs_base__error__bad_wuffs_version); - } - - if ((options & WUFFS_INITIALIZE__ALREADY_ZEROED) != 0) { - // The whole point of this if-check is to detect an uninitialized *self. - // We disable the warning on GCC. Clang-5.0 does not have this warning. -#if !defined(__clang__) && defined(__GNUC__) -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wmaybe-uninitialized" -#endif - if (self->private_impl.magic != 0) { - return wuffs_base__make_status(wuffs_base__error__initialize_falsely_claimed_already_zeroed); - } -#if !defined(__clang__) && defined(__GNUC__) -#pragma GCC diagnostic pop -#endif - } else { - if ((options & WUFFS_INITIALIZE__LEAVE_INTERNAL_BUFFERS_UNINITIALIZED) == 0) { - memset(self, 0, sizeof(*self)); - options |= WUFFS_INITIALIZE__ALREADY_ZEROED; - } else { - memset(&(self->private_impl), 0, sizeof(self->private_impl)); - } - } - - self->private_impl.magic = WUFFS_BASE__MAGIC; - self->private_impl.vtable_for__wuffs_base__image_decoder.vtable_name = - wuffs_base__image_decoder__vtable_name; - self->private_impl.vtable_for__wuffs_base__image_decoder.function_pointers = - (const void*)(&wuffs_wbmp__decoder__func_ptrs_for__wuffs_base__image_decoder); - return wuffs_base__make_status(NULL); -} - -wuffs_wbmp__decoder* -wuffs_wbmp__decoder__alloc() { - wuffs_wbmp__decoder* x = - (wuffs_wbmp__decoder*)(calloc(sizeof(wuffs_wbmp__decoder), 1)); - if (!x) { - return NULL; - } - if (wuffs_wbmp__decoder__initialize( - x, sizeof(wuffs_wbmp__decoder), WUFFS_VERSION, WUFFS_INITIALIZE__ALREADY_ZEROED).repr) { - free(x); - return NULL; - } - return x; -} - -size_t -sizeof__wuffs_wbmp__decoder() { - return sizeof(wuffs_wbmp__decoder); -} - -// ---------------- Function Implementations - -// -------- func wbmp.decoder.set_quirk - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_wbmp__decoder__set_quirk( - wuffs_wbmp__decoder* self, - uint32_t a_key, - uint64_t a_value) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - - return wuffs_base__make_status(wuffs_base__error__unsupported_option); -} - -// -------- func wbmp.decoder.decode_image_config - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_wbmp__decoder__decode_image_config( - wuffs_wbmp__decoder* self, - wuffs_base__image_config* a_dst, - wuffs_base__io_buffer* a_src) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - if (!a_src) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - if ((self->private_impl.active_coroutine != 0) && - (self->private_impl.active_coroutine != 1)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); - } - self->private_impl.active_coroutine = 0; - wuffs_base__status status = wuffs_base__make_status(NULL); - - wuffs_base__status v_status = wuffs_base__make_status(NULL); - - uint32_t coro_susp_point = self->private_impl.p_decode_image_config[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - while (true) { - { - wuffs_base__status t_0 = wuffs_wbmp__decoder__do_decode_image_config(self, a_dst, a_src); - v_status = t_0; - } - if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { - status = wuffs_base__make_status(wuffs_wbmp__error__truncated_input); - goto exit; - } - status = v_status; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); - } - - ok: - self->private_impl.p_decode_image_config[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 1 : 0; - - goto exit; - exit: - if (wuffs_base__status__is_error(&status)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - } - return status; -} - -// -------- func wbmp.decoder.do_decode_image_config - -static wuffs_base__status -wuffs_wbmp__decoder__do_decode_image_config( - wuffs_wbmp__decoder* self, - wuffs_base__image_config* a_dst, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - uint8_t v_c = 0; - uint32_t v_i = 0; - uint32_t v_p = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_do_decode_image_config[0]; - if (coro_susp_point) { - v_i = self->private_data.s_do_decode_image_config[0].v_i; - v_p = self->private_data.s_do_decode_image_config[0].v_p; - } - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - if (self->private_impl.f_call_sequence != 0) { - status = wuffs_base__make_status(wuffs_base__error__bad_call_sequence); - goto exit; - } - v_i = 0; - while (v_i < 2) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_0 = *iop_a_src++; - v_c = t_0; - } - if (v_c != 0) { - status = wuffs_base__make_status(wuffs_wbmp__error__bad_header); - goto exit; - } - v_i += 1; - } - v_i = 0; - while (v_i < 2) { - v_p = 0; - while (true) { - { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(2); - if (WUFFS_BASE__UNLIKELY(iop_a_src == io2_a_src)) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - goto suspend; - } - uint8_t t_1 = *iop_a_src++; - v_c = t_1; - } - v_p |= ((uint32_t)((v_c & 127))); - if ((v_c >> 7) == 0) { - goto label__0__break; - } else if (v_p > 131071) { - status = wuffs_base__make_status(wuffs_base__error__unsupported_image_dimension); - goto exit; - } - v_p <<= 7; - } - label__0__break:; - if (v_i == 0) { - self->private_impl.f_width = v_p; - } else { - self->private_impl.f_height = v_p; - } - v_i += 1; - } - self->private_impl.f_frame_config_io_position = wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src))); - if (a_dst != NULL) { - wuffs_base__image_config__set( - a_dst, - 2198077448, - 0, - self->private_impl.f_width, - self->private_impl.f_height, - self->private_impl.f_frame_config_io_position, - true); - } - self->private_impl.f_call_sequence = 32; - - goto ok; - ok: - self->private_impl.p_do_decode_image_config[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_do_decode_image_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_data.s_do_decode_image_config[0].v_i = v_i; - self->private_data.s_do_decode_image_config[0].v_p = v_p; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func wbmp.decoder.decode_frame_config - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_wbmp__decoder__decode_frame_config( - wuffs_wbmp__decoder* self, - wuffs_base__frame_config* a_dst, - wuffs_base__io_buffer* a_src) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - if (!a_src) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - if ((self->private_impl.active_coroutine != 0) && - (self->private_impl.active_coroutine != 2)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); - } - self->private_impl.active_coroutine = 0; - wuffs_base__status status = wuffs_base__make_status(NULL); - - wuffs_base__status v_status = wuffs_base__make_status(NULL); - - uint32_t coro_susp_point = self->private_impl.p_decode_frame_config[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - while (true) { - { - wuffs_base__status t_0 = wuffs_wbmp__decoder__do_decode_frame_config(self, a_dst, a_src); - v_status = t_0; - } - if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { - status = wuffs_base__make_status(wuffs_wbmp__error__truncated_input); - goto exit; - } - status = v_status; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); - } - - ok: - self->private_impl.p_decode_frame_config[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 2 : 0; - - goto exit; - exit: - if (wuffs_base__status__is_error(&status)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - } - return status; -} - -// -------- func wbmp.decoder.do_decode_frame_config - -static wuffs_base__status -wuffs_wbmp__decoder__do_decode_frame_config( - wuffs_wbmp__decoder* self, - wuffs_base__frame_config* a_dst, - wuffs_base__io_buffer* a_src) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_do_decode_frame_config[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - if (self->private_impl.f_call_sequence == 32) { - } else if (self->private_impl.f_call_sequence < 32) { - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - status = wuffs_wbmp__decoder__do_decode_image_config(self, NULL, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - } else if (self->private_impl.f_call_sequence == 40) { - if (self->private_impl.f_frame_config_io_position != wuffs_base__u64__sat_add((a_src ? a_src->meta.pos : 0), ((uint64_t)(iop_a_src - io0_a_src)))) { - status = wuffs_base__make_status(wuffs_base__error__bad_restart); - goto exit; - } - } else if (self->private_impl.f_call_sequence == 64) { - self->private_impl.f_call_sequence = 96; - status = wuffs_base__make_status(wuffs_base__note__end_of_data); - goto ok; - } else { - status = wuffs_base__make_status(wuffs_base__note__end_of_data); - goto ok; - } - if (a_dst != NULL) { - wuffs_base__frame_config__set( - a_dst, - wuffs_base__utility__make_rect_ie_u32( - 0, - 0, - self->private_impl.f_width, - self->private_impl.f_height), - ((wuffs_base__flicks)(0)), - 0, - self->private_impl.f_frame_config_io_position, - 0, - true, - false, - 4278190080); - } - self->private_impl.f_call_sequence = 64; - - ok: - self->private_impl.p_do_decode_frame_config[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_do_decode_frame_config[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func wbmp.decoder.decode_frame - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_wbmp__decoder__decode_frame( - wuffs_wbmp__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__pixel_blend a_blend, - wuffs_base__slice_u8 a_workbuf, - wuffs_base__decode_frame_options* a_opts) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - if (!a_dst || !a_src) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - if ((self->private_impl.active_coroutine != 0) && - (self->private_impl.active_coroutine != 3)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); - } - self->private_impl.active_coroutine = 0; - wuffs_base__status status = wuffs_base__make_status(NULL); - - wuffs_base__status v_status = wuffs_base__make_status(NULL); - - uint32_t coro_susp_point = self->private_impl.p_decode_frame[0]; - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - while (true) { - { - wuffs_base__status t_0 = wuffs_wbmp__decoder__do_decode_frame(self, - a_dst, - a_src, - a_blend, - a_workbuf, - a_opts); - v_status = t_0; - } - if ((v_status.repr == wuffs_base__suspension__short_read) && (a_src && a_src->meta.closed)) { - status = wuffs_base__make_status(wuffs_wbmp__error__truncated_input); - goto exit; - } - status = v_status; - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(1); - } - - ok: - self->private_impl.p_decode_frame[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_impl.active_coroutine = wuffs_base__status__is_suspension(&status) ? 3 : 0; - - goto exit; - exit: - if (wuffs_base__status__is_error(&status)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - } - return status; -} - -// -------- func wbmp.decoder.do_decode_frame - -static wuffs_base__status -wuffs_wbmp__decoder__do_decode_frame( - wuffs_wbmp__decoder* self, - wuffs_base__pixel_buffer* a_dst, - wuffs_base__io_buffer* a_src, - wuffs_base__pixel_blend a_blend, - wuffs_base__slice_u8 a_workbuf, - wuffs_base__decode_frame_options* a_opts) { - wuffs_base__status status = wuffs_base__make_status(NULL); - - wuffs_base__status v_status = wuffs_base__make_status(NULL); - wuffs_base__pixel_format v_dst_pixfmt = {0}; - uint32_t v_dst_bits_per_pixel = 0; - uint64_t v_dst_bytes_per_pixel = 0; - uint64_t v_dst_x_in_bytes = 0; - uint32_t v_dst_x = 0; - uint32_t v_dst_y = 0; - wuffs_base__table_u8 v_tab = {0}; - wuffs_base__slice_u8 v_dst = {0}; - uint8_t v_src[1] = {0}; - uint8_t v_c = 0; - - const uint8_t* iop_a_src = NULL; - const uint8_t* io0_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io1_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - const uint8_t* io2_a_src WUFFS_BASE__POTENTIALLY_UNUSED = NULL; - if (a_src && a_src->data.ptr) { - io0_a_src = a_src->data.ptr; - io1_a_src = io0_a_src + a_src->meta.ri; - iop_a_src = io1_a_src; - io2_a_src = io0_a_src + a_src->meta.wi; - } - - uint32_t coro_susp_point = self->private_impl.p_do_decode_frame[0]; - if (coro_susp_point) { - v_dst_bytes_per_pixel = self->private_data.s_do_decode_frame[0].v_dst_bytes_per_pixel; - v_dst_x = self->private_data.s_do_decode_frame[0].v_dst_x; - v_dst_y = self->private_data.s_do_decode_frame[0].v_dst_y; - memcpy(v_src, self->private_data.s_do_decode_frame[0].v_src, sizeof(v_src)); - v_c = self->private_data.s_do_decode_frame[0].v_c; - } - switch (coro_susp_point) { - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_0; - - if (self->private_impl.f_call_sequence == 64) { - } else if (self->private_impl.f_call_sequence < 64) { - if (a_src) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - WUFFS_BASE__COROUTINE_SUSPENSION_POINT(1); - status = wuffs_wbmp__decoder__do_decode_frame_config(self, NULL, a_src); - if (a_src) { - iop_a_src = a_src->data.ptr + a_src->meta.ri; - } - if (status.repr) { - goto suspend; - } - } else { - status = wuffs_base__make_status(wuffs_base__note__end_of_data); - goto ok; - } - v_status = wuffs_base__pixel_swizzler__prepare(&self->private_impl.f_swizzler, - wuffs_base__pixel_buffer__pixel_format(a_dst), - wuffs_base__pixel_buffer__palette(a_dst), - wuffs_base__utility__make_pixel_format(536870920), - wuffs_base__utility__empty_slice_u8(), - a_blend); - if ( ! wuffs_base__status__is_ok(&v_status)) { - status = v_status; - if (wuffs_base__status__is_error(&status)) { - goto exit; - } else if (wuffs_base__status__is_suspension(&status)) { - status = wuffs_base__make_status(wuffs_base__error__cannot_return_a_suspension); - goto exit; - } - goto ok; - } - v_dst_pixfmt = wuffs_base__pixel_buffer__pixel_format(a_dst); - v_dst_bits_per_pixel = wuffs_base__pixel_format__bits_per_pixel(&v_dst_pixfmt); - if ((v_dst_bits_per_pixel & 7) != 0) { - status = wuffs_base__make_status(wuffs_base__error__unsupported_option); - goto exit; - } - v_dst_bytes_per_pixel = ((uint64_t)((v_dst_bits_per_pixel / 8))); - if (self->private_impl.f_width > 0) { - v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0); - while (v_dst_y < self->private_impl.f_height) { - v_dst = wuffs_base__table_u8__row_u32(v_tab, v_dst_y); - v_dst_x = 0; - while (v_dst_x < self->private_impl.f_width) { - if ((v_dst_x & 7) == 0) { - while (((uint64_t)(io2_a_src - iop_a_src)) <= 0) { - status = wuffs_base__make_status(wuffs_base__suspension__short_read); - WUFFS_BASE__COROUTINE_SUSPENSION_POINT_MAYBE_SUSPEND(2); - v_tab = wuffs_base__pixel_buffer__plane(a_dst, 0); - v_dst = wuffs_base__table_u8__row_u32(v_tab, v_dst_y); - v_dst_x_in_bytes = (((uint64_t)(v_dst_x)) * v_dst_bytes_per_pixel); - if (v_dst_x_in_bytes <= ((uint64_t)(v_dst.len))) { - v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_dst_x_in_bytes); - } - } - v_c = wuffs_base__peek_u8be__no_bounds_check(iop_a_src); - iop_a_src += 1; - } - if ((v_c & 128) == 0) { - v_src[0] = 0; - } else { - v_src[0] = 255; - } - v_c = ((uint8_t)(((((uint32_t)(v_c)) << 1) & 255))); - wuffs_base__pixel_swizzler__swizzle_interleaved_from_slice(&self->private_impl.f_swizzler, v_dst, wuffs_base__utility__empty_slice_u8(), wuffs_base__make_slice_u8(v_src, 1)); - if (v_dst_bytes_per_pixel <= ((uint64_t)(v_dst.len))) { - v_dst = wuffs_base__slice_u8__subslice_i(v_dst, v_dst_bytes_per_pixel); - } - v_dst_x += 1; - } - v_dst_y += 1; - } - } - self->private_impl.f_call_sequence = 96; - - ok: - self->private_impl.p_do_decode_frame[0] = 0; - goto exit; - } - - goto suspend; - suspend: - self->private_impl.p_do_decode_frame[0] = wuffs_base__status__is_suspension(&status) ? coro_susp_point : 0; - self->private_data.s_do_decode_frame[0].v_dst_bytes_per_pixel = v_dst_bytes_per_pixel; - self->private_data.s_do_decode_frame[0].v_dst_x = v_dst_x; - self->private_data.s_do_decode_frame[0].v_dst_y = v_dst_y; - memcpy(self->private_data.s_do_decode_frame[0].v_src, v_src, sizeof(v_src)); - self->private_data.s_do_decode_frame[0].v_c = v_c; - - goto exit; - exit: - if (a_src && a_src->data.ptr) { - a_src->meta.ri = ((size_t)(iop_a_src - a_src->data.ptr)); - } - - return status; -} - -// -------- func wbmp.decoder.frame_dirty_rect - -WUFFS_BASE__MAYBE_STATIC wuffs_base__rect_ie_u32 -wuffs_wbmp__decoder__frame_dirty_rect( - const wuffs_wbmp__decoder* self) { - if (!self) { - return wuffs_base__utility__empty_rect_ie_u32(); - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return wuffs_base__utility__empty_rect_ie_u32(); - } - - return wuffs_base__utility__make_rect_ie_u32( - 0, - 0, - self->private_impl.f_width, - self->private_impl.f_height); -} - -// -------- func wbmp.decoder.num_animation_loops - -WUFFS_BASE__MAYBE_STATIC uint32_t -wuffs_wbmp__decoder__num_animation_loops( - const wuffs_wbmp__decoder* self) { - if (!self) { - return 0; - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return 0; - } - - return 0; -} - -// -------- func wbmp.decoder.num_decoded_frame_configs - -WUFFS_BASE__MAYBE_STATIC uint64_t -wuffs_wbmp__decoder__num_decoded_frame_configs( - const wuffs_wbmp__decoder* self) { - if (!self) { - return 0; - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return 0; - } - - if (self->private_impl.f_call_sequence > 32) { - return 1; - } - return 0; -} - -// -------- func wbmp.decoder.num_decoded_frames - -WUFFS_BASE__MAYBE_STATIC uint64_t -wuffs_wbmp__decoder__num_decoded_frames( - const wuffs_wbmp__decoder* self) { - if (!self) { - return 0; - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return 0; - } - - if (self->private_impl.f_call_sequence > 64) { - return 1; - } - return 0; -} - -// -------- func wbmp.decoder.restart_frame - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_wbmp__decoder__restart_frame( - wuffs_wbmp__decoder* self, - uint64_t a_index, - uint64_t a_io_position) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - - if (self->private_impl.f_call_sequence < 32) { - return wuffs_base__make_status(wuffs_base__error__bad_call_sequence); - } - if (a_index != 0) { - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - self->private_impl.f_call_sequence = 40; - self->private_impl.f_frame_config_io_position = a_io_position; - return wuffs_base__make_status(NULL); -} - -// -------- func wbmp.decoder.set_report_metadata - -WUFFS_BASE__MAYBE_STATIC wuffs_base__empty_struct -wuffs_wbmp__decoder__set_report_metadata( - wuffs_wbmp__decoder* self, - uint32_t a_fourcc, - bool a_report) { - return wuffs_base__make_empty_struct(); -} - -// -------- func wbmp.decoder.tell_me_more - -WUFFS_BASE__MAYBE_STATIC wuffs_base__status -wuffs_wbmp__decoder__tell_me_more( - wuffs_wbmp__decoder* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__more_information* a_minfo, - wuffs_base__io_buffer* a_src) { - if (!self) { - return wuffs_base__make_status(wuffs_base__error__bad_receiver); - } - if (self->private_impl.magic != WUFFS_BASE__MAGIC) { - return wuffs_base__make_status( - (self->private_impl.magic == WUFFS_BASE__DISABLED) - ? wuffs_base__error__disabled_by_previous_error - : wuffs_base__error__initialize_not_called); - } - if (!a_dst || !a_src) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__bad_argument); - } - if ((self->private_impl.active_coroutine != 0) && - (self->private_impl.active_coroutine != 4)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - return wuffs_base__make_status(wuffs_base__error__interleaved_coroutine_calls); - } - self->private_impl.active_coroutine = 0; - wuffs_base__status status = wuffs_base__make_status(NULL); - - status = wuffs_base__make_status(wuffs_base__error__no_more_information); - goto exit; - - goto ok; - ok: - goto exit; - exit: - if (wuffs_base__status__is_error(&status)) { - self->private_impl.magic = WUFFS_BASE__DISABLED; - } - return status; -} - -// -------- func wbmp.decoder.workbuf_len - -WUFFS_BASE__MAYBE_STATIC wuffs_base__range_ii_u64 -wuffs_wbmp__decoder__workbuf_len( - const wuffs_wbmp__decoder* self) { - if (!self) { - return wuffs_base__utility__empty_range_ii_u64(); - } - if ((self->private_impl.magic != WUFFS_BASE__MAGIC) && - (self->private_impl.magic != WUFFS_BASE__DISABLED)) { - return wuffs_base__utility__empty_range_ii_u64(); - } - - return wuffs_base__utility__make_range_ii_u64(0, 0); -} - -#endif // !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__WBMP) - -#if defined(__cplusplus) && defined(WUFFS_BASE__HAVE_UNIQUE_PTR) - -// ---------------- Auxiliary - Base - -// Auxiliary code is discussed at -// https://github.com/google/wuffs/blob/main/doc/note/auxiliary-code.md - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__AUX__BASE) - -namespace wuffs_aux { - -namespace sync_io { - -// -------- - -DynIOBuffer::DynIOBuffer(uint64_t max_incl) - : m_buf(wuffs_base__empty_io_buffer()), m_max_incl(max_incl) {} - -DynIOBuffer::~DynIOBuffer() { - if (m_buf.data.ptr) { - free(m_buf.data.ptr); - } -} - -void // -DynIOBuffer::drop() { - if (m_buf.data.ptr) { - free(m_buf.data.ptr); - } - m_buf = wuffs_base__empty_io_buffer(); -} - -DynIOBuffer::GrowResult // -DynIOBuffer::grow(uint64_t min_incl) { - uint64_t n = round_up(min_incl, m_max_incl); - if (n == 0) { - return ((min_incl == 0) && (m_max_incl == 0)) - ? DynIOBuffer::GrowResult::OK - : DynIOBuffer::GrowResult::FailedMaxInclExceeded; - } else if (n > m_buf.data.len) { - uint8_t* ptr = static_cast(realloc(m_buf.data.ptr, n)); - if (!ptr) { - return DynIOBuffer::GrowResult::FailedOutOfMemory; - } - m_buf.data.ptr = ptr; - m_buf.data.len = n; - } - return DynIOBuffer::GrowResult::OK; -} - -// round_up rounds min_incl up, returning the smallest value x satisfying -// (min_incl <= x) and (x <= max_incl) and some other constraints. It returns 0 -// if there is no such x. -// -// When max_incl <= 4096, the other constraints are: -// - (x == max_incl) -// -// When max_incl > 4096, the other constraints are: -// - (x == max_incl) or (x is a power of 2) -// - (x >= 4096) -uint64_t // -DynIOBuffer::round_up(uint64_t min_incl, uint64_t max_incl) { - if (min_incl > max_incl) { - return 0; - } - uint64_t n = 4096; - if (n >= max_incl) { - return max_incl; - } - while (n < min_incl) { - if (n >= (max_incl / 2)) { - return max_incl; - } - n *= 2; - } - return n; -} - -// -------- - -Input::~Input() {} - -IOBuffer* // -Input::BringsItsOwnIOBuffer() { - return nullptr; -} - -// -------- - -FileInput::FileInput(FILE* f) : m_f(f) {} - -std::string // -FileInput::CopyIn(IOBuffer* dst) { - if (!m_f) { - return "wuffs_aux::sync_io::FileInput: nullptr file"; - } else if (!dst) { - return "wuffs_aux::sync_io::FileInput: nullptr IOBuffer"; - } else if (dst->meta.closed) { - return "wuffs_aux::sync_io::FileInput: end of file"; - } else { - dst->compact(); - size_t n = fread(dst->writer_pointer(), 1, dst->writer_length(), m_f); - dst->meta.wi += n; - dst->meta.closed = feof(m_f); - if (ferror(m_f)) { - return "wuffs_aux::sync_io::FileInput: error reading file"; - } - } - return ""; -} - -// -------- - -MemoryInput::MemoryInput(const char* ptr, size_t len) - : m_io(wuffs_base__ptr_u8__reader( - static_cast(static_cast(const_cast(ptr))), - len, - true)) {} - -MemoryInput::MemoryInput(const uint8_t* ptr, size_t len) - : m_io(wuffs_base__ptr_u8__reader(const_cast(ptr), len, true)) {} - -IOBuffer* // -MemoryInput::BringsItsOwnIOBuffer() { - return &m_io; -} - -std::string // -MemoryInput::CopyIn(IOBuffer* dst) { - if (!dst) { - return "wuffs_aux::sync_io::MemoryInput: nullptr IOBuffer"; - } else if (dst->meta.closed) { - return "wuffs_aux::sync_io::MemoryInput: end of file"; - } else if (wuffs_base__slice_u8__overlaps(dst->data, m_io.data)) { - // Treat m_io's data as immutable, so don't compact dst or otherwise write - // to it. - return "wuffs_aux::sync_io::MemoryInput: overlapping buffers"; - } else { - dst->compact(); - size_t nd = dst->writer_length(); - size_t ns = m_io.reader_length(); - size_t n = (nd < ns) ? nd : ns; - memcpy(dst->writer_pointer(), m_io.reader_pointer(), n); - m_io.meta.ri += n; - dst->meta.wi += n; - dst->meta.closed = m_io.reader_length() == 0; - } - return ""; -} - -// -------- - -} // namespace sync_io - -namespace private_impl { - -struct ErrorMessages { - const char* max_incl_metadata_length_exceeded; - const char* out_of_memory; - const char* unexpected_end_of_file; - const char* unsupported_metadata; - const char* unsupported_negative_advance; - - // If adding new "const char*" typed fields to this struct, either add them - // after existing fields or, if re-ordering fields, make sure that you update - // all of the "const private_impl::ErrorMessages FooBarErrorMessages" values - // in all of the sibling *.cc files. - - static inline const char* resolve(const char* s) { - return s ? s : "wuffs_aux::private_impl: unknown error"; - }; -}; - -std::string // -AdvanceIOBufferTo(const ErrorMessages& error_messages, - sync_io::Input& input, - IOBuffer& io_buf, - uint64_t absolute_position) { - if (absolute_position < io_buf.reader_position()) { - return error_messages.resolve(error_messages.unsupported_negative_advance); - } - while (true) { - uint64_t relative_position = absolute_position - io_buf.reader_position(); - if (relative_position <= io_buf.reader_length()) { - io_buf.meta.ri += (size_t)relative_position; - break; - } else if (io_buf.meta.closed) { - return error_messages.resolve(error_messages.unexpected_end_of_file); - } - io_buf.meta.ri = io_buf.meta.wi; - if (!input.BringsItsOwnIOBuffer()) { - io_buf.compact(); - } - std::string error_message = input.CopyIn(&io_buf); - if (!error_message.empty()) { - return error_message; - } - } - return ""; -} - -std::string // -HandleMetadata( - const ErrorMessages& error_messages, - sync_io::Input& input, - wuffs_base__io_buffer& io_buf, - sync_io::DynIOBuffer& raw, - wuffs_base__status (*tell_me_more_func)(void*, - wuffs_base__io_buffer*, - wuffs_base__more_information*, - wuffs_base__io_buffer*), - void* tell_me_more_receiver, - std::string (*handle_metadata_func)(void*, - const wuffs_base__more_information*, - wuffs_base__slice_u8), - void* handle_metadata_receiver) { - wuffs_base__more_information minfo = wuffs_base__empty_more_information(); - // Reset raw but keep its backing array (the raw.m_buf.data slice). - raw.m_buf.meta = wuffs_base__empty_io_buffer_meta(); - - while (true) { - minfo = wuffs_base__empty_more_information(); - wuffs_base__status status = (*tell_me_more_func)( - tell_me_more_receiver, &raw.m_buf, &minfo, &io_buf); - switch (minfo.flavor) { - case 0: - case WUFFS_BASE__MORE_INFORMATION__FLAVOR__METADATA_RAW_TRANSFORM: - case WUFFS_BASE__MORE_INFORMATION__FLAVOR__METADATA_PARSED: - break; - - case WUFFS_BASE__MORE_INFORMATION__FLAVOR__METADATA_RAW_PASSTHROUGH: { - wuffs_base__range_ie_u64 r = minfo.metadata_raw_passthrough__range(); - if (r.is_empty()) { - break; - } - uint64_t num_to_copy = r.length(); - if (num_to_copy > (raw.m_max_incl - raw.m_buf.meta.wi)) { - return error_messages.resolve( - error_messages.max_incl_metadata_length_exceeded); - } else if (num_to_copy > (raw.m_buf.data.len - raw.m_buf.meta.wi)) { - switch (raw.grow(num_to_copy + raw.m_buf.meta.wi)) { - case sync_io::DynIOBuffer::GrowResult::OK: - break; - case sync_io::DynIOBuffer::GrowResult::FailedMaxInclExceeded: - return error_messages.resolve( - error_messages.max_incl_metadata_length_exceeded); - case sync_io::DynIOBuffer::GrowResult::FailedOutOfMemory: - return error_messages.resolve(error_messages.out_of_memory); - } - } - - if (io_buf.reader_position() > r.min_incl) { - return error_messages.resolve(error_messages.unsupported_metadata); - } else { - std::string error_message = - AdvanceIOBufferTo(error_messages, input, io_buf, r.min_incl); - if (!error_message.empty()) { - return error_message; - } - } - - while (true) { - uint64_t n = - wuffs_base__u64__min(num_to_copy, io_buf.reader_length()); - memcpy(raw.m_buf.writer_pointer(), io_buf.reader_pointer(), n); - raw.m_buf.meta.wi += n; - io_buf.meta.ri += n; - num_to_copy -= n; - if (num_to_copy == 0) { - break; - } else if (io_buf.meta.closed) { - return error_messages.resolve( - error_messages.unexpected_end_of_file); - } else if (!input.BringsItsOwnIOBuffer()) { - io_buf.compact(); - } - std::string error_message = input.CopyIn(&io_buf); - if (!error_message.empty()) { - return error_message; - } - } - break; - } - - default: - return error_messages.resolve(error_messages.unsupported_metadata); - } - - if (status.repr == nullptr) { - break; - } else if (status.repr != wuffs_base__suspension__even_more_information) { - if (status.repr != wuffs_base__suspension__short_write) { - return status.message(); - } - switch (raw.grow(wuffs_base__u64__sat_add(raw.m_buf.data.len, 1))) { - case sync_io::DynIOBuffer::GrowResult::OK: - break; - case sync_io::DynIOBuffer::GrowResult::FailedMaxInclExceeded: - return error_messages.resolve( - error_messages.max_incl_metadata_length_exceeded); - case sync_io::DynIOBuffer::GrowResult::FailedOutOfMemory: - return error_messages.resolve(error_messages.out_of_memory); - } - } - } - - return (*handle_metadata_func)(handle_metadata_receiver, &minfo, - raw.m_buf.reader_slice()); -} - -} // namespace private_impl - -} // namespace wuffs_aux - -#endif // !defined(WUFFS_CONFIG__MODULES) || - // defined(WUFFS_CONFIG__MODULE__AUX__BASE) - -// ---------------- Auxiliary - CBOR - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__AUX__CBOR) - -#include - -namespace wuffs_aux { - -DecodeCborResult::DecodeCborResult(std::string&& error_message0, - uint64_t cursor_position0) - : error_message(std::move(error_message0)), - cursor_position(cursor_position0) {} - -DecodeCborCallbacks::~DecodeCborCallbacks() {} - -void // -DecodeCborCallbacks::Done(DecodeCborResult& result, - sync_io::Input& input, - IOBuffer& buffer) {} - -DecodeCborArgQuirks::DecodeCborArgQuirks(wuffs_base__slice_u32 repr0) - : repr(repr0) {} - -DecodeCborArgQuirks::DecodeCborArgQuirks(uint32_t* ptr0, size_t len0) - : repr(wuffs_base__make_slice_u32(ptr0, len0)) {} - -DecodeCborArgQuirks // -DecodeCborArgQuirks::DefaultValue() { - return DecodeCborArgQuirks(wuffs_base__empty_slice_u32()); -} - -DecodeCborResult // -DecodeCbor(DecodeCborCallbacks& callbacks, - sync_io::Input& input, - DecodeCborArgQuirks quirks) { - // Prepare the wuffs_base__io_buffer and the resultant error_message. - wuffs_base__io_buffer* io_buf = input.BringsItsOwnIOBuffer(); - wuffs_base__io_buffer fallback_io_buf = wuffs_base__empty_io_buffer(); - std::unique_ptr fallback_io_array(nullptr); - if (!io_buf) { - fallback_io_array = std::unique_ptr(new uint8_t[4096]); - fallback_io_buf = wuffs_base__ptr_u8__writer(fallback_io_array.get(), 4096); - io_buf = &fallback_io_buf; - } - // cursor_index is discussed at - // https://nigeltao.github.io/blog/2020/jsonptr.html#the-cursor-index - size_t cursor_index = 0; - std::string ret_error_message; - std::string io_error_message; - - do { - // Prepare the low-level CBOR decoder. - wuffs_cbor__decoder::unique_ptr dec = wuffs_cbor__decoder::alloc(); - if (!dec) { - ret_error_message = "wuffs_aux::DecodeCbor: out of memory"; - goto done; - } - for (size_t i = 0; i < quirks.repr.len; i++) { - dec->set_quirk(quirks.repr.ptr[i], 1); - } - - // Prepare the wuffs_base__tok_buffer. 256 tokens is 2KiB. - wuffs_base__token tok_array[256]; - wuffs_base__token_buffer tok_buf = - wuffs_base__slice_token__writer(wuffs_base__make_slice_token( - &tok_array[0], (sizeof(tok_array) / sizeof(tok_array[0])))); - wuffs_base__status tok_status = wuffs_base__make_status(nullptr); - - // Prepare other state. - int32_t depth = 0; - std::string str; - int64_t extension_category = 0; - uint64_t extension_detail = 0; - - // Valid token's VBCs range in 0 ..= 15. Values over that are for tokens - // from outside of the base package, such as the CBOR package. - constexpr int64_t EXT_CAT__CBOR_TAG = 16; - - // Loop, doing these two things: - // 1. Get the next token. - // 2. Process that token. - while (true) { - // 1. Get the next token. - - while (tok_buf.meta.ri >= tok_buf.meta.wi) { - if (tok_status.repr == nullptr) { - // No-op. - } else if (tok_status.repr == wuffs_base__suspension__short_write) { - tok_buf.compact(); - } else if (tok_status.repr == wuffs_base__suspension__short_read) { - // Read from input to io_buf. - if (!io_error_message.empty()) { - ret_error_message = std::move(io_error_message); - goto done; - } else if (cursor_index != io_buf->meta.ri) { - ret_error_message = - "wuffs_aux::DecodeCbor: internal error: bad cursor_index"; - goto done; - } else if (io_buf->meta.closed) { - ret_error_message = - "wuffs_aux::DecodeCbor: internal error: io_buf is closed"; - goto done; - } - io_buf->compact(); - if (io_buf->meta.wi >= io_buf->data.len) { - ret_error_message = - "wuffs_aux::DecodeCbor: internal error: io_buf is full"; - goto done; - } - cursor_index = io_buf->meta.ri; - io_error_message = input.CopyIn(io_buf); - } else { - ret_error_message = tok_status.message(); - goto done; - } - - if (WUFFS_CBOR__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE != 0) { - ret_error_message = - "wuffs_aux::DecodeCbor: internal error: bad WORKBUF_LEN"; - goto done; - } - wuffs_base__slice_u8 work_buf = wuffs_base__empty_slice_u8(); - tok_status = dec->decode_tokens(&tok_buf, io_buf, work_buf); - if ((tok_buf.meta.ri > tok_buf.meta.wi) || - (tok_buf.meta.wi > tok_buf.data.len) || - (io_buf->meta.ri > io_buf->meta.wi) || - (io_buf->meta.wi > io_buf->data.len)) { - ret_error_message = - "wuffs_aux::DecodeCbor: internal error: bad buffer indexes"; - goto done; - } - } - - wuffs_base__token token = tok_buf.data.ptr[tok_buf.meta.ri++]; - uint64_t token_len = token.length(); - if ((io_buf->meta.ri < cursor_index) || - ((io_buf->meta.ri - cursor_index) < token_len)) { - ret_error_message = - "wuffs_aux::DecodeCbor: internal error: bad token indexes"; - goto done; - } - uint8_t* token_ptr = io_buf->data.ptr + cursor_index; - cursor_index += static_cast(token_len); - - // 2. Process that token. - - uint64_t vbd = token.value_base_detail(); - - if (extension_category != 0) { - int64_t ext = token.value_extension(); - if ((ext >= 0) && !token.continued()) { - extension_detail = (extension_detail - << WUFFS_BASE__TOKEN__VALUE_EXTENSION__NUM_BITS) | - static_cast(ext); - switch (extension_category) { - case WUFFS_BASE__TOKEN__VBC__INLINE_INTEGER_SIGNED: - extension_category = 0; - ret_error_message = - callbacks.AppendI64(static_cast(extension_detail)); - goto parsed_a_value; - case WUFFS_BASE__TOKEN__VBC__INLINE_INTEGER_UNSIGNED: - extension_category = 0; - ret_error_message = callbacks.AppendU64(extension_detail); - goto parsed_a_value; - case EXT_CAT__CBOR_TAG: - extension_category = 0; - ret_error_message = callbacks.AppendCborTag(extension_detail); - if (!ret_error_message.empty()) { - goto done; - } - continue; - } - } - ret_error_message = - "wuffs_aux::DecodeCbor: internal error: bad extended token"; - goto done; - } - - switch (token.value_base_category()) { - case WUFFS_BASE__TOKEN__VBC__FILLER: - continue; - - case WUFFS_BASE__TOKEN__VBC__STRUCTURE: { - if (vbd & WUFFS_BASE__TOKEN__VBD__STRUCTURE__PUSH) { - ret_error_message = callbacks.Push(static_cast(vbd)); - if (!ret_error_message.empty()) { - goto done; - } - depth++; - if (depth > WUFFS_CBOR__DECODER_DEPTH_MAX_INCL) { - ret_error_message = - "wuffs_aux::DecodeCbor: internal error: bad depth"; - goto done; - } - continue; - } - ret_error_message = callbacks.Pop(static_cast(vbd)); - depth--; - if (depth < 0) { - ret_error_message = - "wuffs_aux::DecodeCbor: internal error: bad depth"; - goto done; - } - goto parsed_a_value; - } - - case WUFFS_BASE__TOKEN__VBC__STRING: { - if (vbd & WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_0_DST_1_SRC_DROP) { - // No-op. - } else if (vbd & - WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_1_DST_1_SRC_COPY) { - const char* ptr = // Convert from (uint8_t*). - static_cast(static_cast(token_ptr)); - str.append(ptr, static_cast(token_len)); - } else { - goto fail; - } - if (token.continued()) { - continue; - } - ret_error_message = - (vbd & WUFFS_BASE__TOKEN__VBD__STRING__CHAIN_MUST_BE_UTF_8) - ? callbacks.AppendTextString(std::move(str)) - : callbacks.AppendByteString(std::move(str)); - str.clear(); - goto parsed_a_value; - } - - case WUFFS_BASE__TOKEN__VBC__UNICODE_CODE_POINT: { - uint8_t u[WUFFS_BASE__UTF_8__BYTE_LENGTH__MAX_INCL]; - size_t n = wuffs_base__utf_8__encode( - wuffs_base__make_slice_u8( - &u[0], WUFFS_BASE__UTF_8__BYTE_LENGTH__MAX_INCL), - static_cast(vbd)); - const char* ptr = // Convert from (uint8_t*). - static_cast(static_cast(&u[0])); - str.append(ptr, n); - if (token.continued()) { - continue; - } - goto fail; - } - - case WUFFS_BASE__TOKEN__VBC__LITERAL: { - if (vbd & WUFFS_BASE__TOKEN__VBD__LITERAL__NULL) { - ret_error_message = callbacks.AppendNull(); - } else if (vbd & WUFFS_BASE__TOKEN__VBD__LITERAL__UNDEFINED) { - ret_error_message = callbacks.AppendUndefined(); - } else { - ret_error_message = callbacks.AppendBool( - vbd & WUFFS_BASE__TOKEN__VBD__LITERAL__TRUE); - } - goto parsed_a_value; - } - - case WUFFS_BASE__TOKEN__VBC__NUMBER: { - const uint64_t cfp_fbbe_fifb = - WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_FLOATING_POINT | - WUFFS_BASE__TOKEN__VBD__NUMBER__FORMAT_BINARY_BIG_ENDIAN | - WUFFS_BASE__TOKEN__VBD__NUMBER__FORMAT_IGNORE_FIRST_BYTE; - if ((vbd & cfp_fbbe_fifb) == cfp_fbbe_fifb) { - double f; - switch (token_len) { - case 3: - f = wuffs_base__ieee_754_bit_representation__from_u16_to_f64( - wuffs_base__peek_u16be__no_bounds_check(token_ptr + 1)); - break; - case 5: - f = wuffs_base__ieee_754_bit_representation__from_u32_to_f64( - wuffs_base__peek_u32be__no_bounds_check(token_ptr + 1)); - break; - case 9: - f = wuffs_base__ieee_754_bit_representation__from_u64_to_f64( - wuffs_base__peek_u64be__no_bounds_check(token_ptr + 1)); - break; - default: - goto fail; - } - ret_error_message = callbacks.AppendF64(f); - goto parsed_a_value; - } - goto fail; - } - - case WUFFS_BASE__TOKEN__VBC__INLINE_INTEGER_SIGNED: { - if (token.continued()) { - extension_category = WUFFS_BASE__TOKEN__VBC__INLINE_INTEGER_SIGNED; - extension_detail = - static_cast(token.value_base_detail__sign_extended()); - continue; - } - ret_error_message = - callbacks.AppendI64(token.value_base_detail__sign_extended()); - goto parsed_a_value; - } - - case WUFFS_BASE__TOKEN__VBC__INLINE_INTEGER_UNSIGNED: { - if (token.continued()) { - extension_category = - WUFFS_BASE__TOKEN__VBC__INLINE_INTEGER_UNSIGNED; - extension_detail = vbd; - continue; - } - ret_error_message = callbacks.AppendU64(vbd); - goto parsed_a_value; - } - } - - if (token.value_major() == WUFFS_CBOR__TOKEN_VALUE_MAJOR) { - uint64_t value_minor = token.value_minor(); - if (value_minor & WUFFS_CBOR__TOKEN_VALUE_MINOR__MINUS_1_MINUS_X) { - if (token_len == 9) { - ret_error_message = callbacks.AppendMinus1MinusX( - wuffs_base__peek_u64be__no_bounds_check(token_ptr + 1)); - goto parsed_a_value; - } - } else if (value_minor & WUFFS_CBOR__TOKEN_VALUE_MINOR__SIMPLE_VALUE) { - ret_error_message = - callbacks.AppendCborSimpleValue(static_cast( - value_minor & WUFFS_CBOR__TOKEN_VALUE_MINOR__DETAIL_MASK)); - goto parsed_a_value; - } else if (value_minor & WUFFS_CBOR__TOKEN_VALUE_MINOR__TAG) { - if (token.continued()) { - extension_category = EXT_CAT__CBOR_TAG; - extension_detail = - value_minor & WUFFS_CBOR__TOKEN_VALUE_MINOR__DETAIL_MASK; - continue; - } - ret_error_message = callbacks.AppendCborTag( - value_minor & WUFFS_CBOR__TOKEN_VALUE_MINOR__DETAIL_MASK); - if (!ret_error_message.empty()) { - goto done; - } - continue; - } - } - - fail: - ret_error_message = - "wuffs_aux::DecodeCbor: internal error: unexpected token"; - goto done; - - parsed_a_value: - if (!ret_error_message.empty() || (depth == 0)) { - goto done; - } - } - } while (false); - -done: - DecodeCborResult result( - std::move(ret_error_message), - wuffs_base__u64__sat_add(io_buf->meta.pos, cursor_index)); - callbacks.Done(result, input, *io_buf); - return result; -} - -} // namespace wuffs_aux - -#endif // !defined(WUFFS_CONFIG__MODULES) || - // defined(WUFFS_CONFIG__MODULE__AUX__CBOR) - -// ---------------- Auxiliary - Image - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__AUX__IMAGE) - -#include - -namespace wuffs_aux { - -DecodeImageResult::DecodeImageResult(MemOwner&& pixbuf_mem_owner0, - wuffs_base__pixel_buffer pixbuf0, - std::string&& error_message0) - : pixbuf_mem_owner(std::move(pixbuf_mem_owner0)), - pixbuf(pixbuf0), - error_message(std::move(error_message0)) {} - -DecodeImageResult::DecodeImageResult(std::string&& error_message0) - : pixbuf_mem_owner(nullptr, &free), - pixbuf(wuffs_base__null_pixel_buffer()), - error_message(std::move(error_message0)) {} - -DecodeImageCallbacks::~DecodeImageCallbacks() {} - -DecodeImageCallbacks::AllocPixbufResult::AllocPixbufResult( - MemOwner&& mem_owner0, - wuffs_base__pixel_buffer pixbuf0) - : mem_owner(std::move(mem_owner0)), pixbuf(pixbuf0), error_message("") {} - -DecodeImageCallbacks::AllocPixbufResult::AllocPixbufResult( - std::string&& error_message0) - : mem_owner(nullptr, &free), - pixbuf(wuffs_base__null_pixel_buffer()), - error_message(std::move(error_message0)) {} - -DecodeImageCallbacks::AllocWorkbufResult::AllocWorkbufResult( - MemOwner&& mem_owner0, - wuffs_base__slice_u8 workbuf0) - : mem_owner(std::move(mem_owner0)), workbuf(workbuf0), error_message("") {} - -DecodeImageCallbacks::AllocWorkbufResult::AllocWorkbufResult( - std::string&& error_message0) - : mem_owner(nullptr, &free), - workbuf(wuffs_base__empty_slice_u8()), - error_message(std::move(error_message0)) {} - -wuffs_base__image_decoder::unique_ptr // -DecodeImageCallbacks::SelectDecoder(uint32_t fourcc, - wuffs_base__slice_u8 prefix_data, - bool prefix_closed) { - switch (fourcc) { -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__BMP) - case WUFFS_BASE__FOURCC__BMP: - return wuffs_bmp__decoder::alloc_as__wuffs_base__image_decoder(); -#endif - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__GIF) - case WUFFS_BASE__FOURCC__GIF: - return wuffs_gif__decoder::alloc_as__wuffs_base__image_decoder(); -#endif - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__JPEG) - case WUFFS_BASE__FOURCC__JPEG: - return wuffs_jpeg__decoder::alloc_as__wuffs_base__image_decoder(); -#endif - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NIE) - case WUFFS_BASE__FOURCC__NIE: - return wuffs_nie__decoder::alloc_as__wuffs_base__image_decoder(); -#endif - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__NETPBM) - case WUFFS_BASE__FOURCC__NPBM: - return wuffs_netpbm__decoder::alloc_as__wuffs_base__image_decoder(); -#endif - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__PNG) - case WUFFS_BASE__FOURCC__PNG: { - auto dec = wuffs_png__decoder::alloc_as__wuffs_base__image_decoder(); - // Favor faster decodes over rejecting invalid checksums. - dec->set_quirk(WUFFS_BASE__QUIRK_IGNORE_CHECKSUM, 1); - return dec; - } -#endif - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__TGA) - case WUFFS_BASE__FOURCC__TGA: - return wuffs_tga__decoder::alloc_as__wuffs_base__image_decoder(); -#endif - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__WBMP) - case WUFFS_BASE__FOURCC__WBMP: - return wuffs_wbmp__decoder::alloc_as__wuffs_base__image_decoder(); -#endif - } - - return wuffs_base__image_decoder::unique_ptr(nullptr, &free); -} - -std::string // -DecodeImageCallbacks::HandleMetadata(const wuffs_base__more_information& minfo, - wuffs_base__slice_u8 raw) { - return ""; -} - -wuffs_base__pixel_format // -DecodeImageCallbacks::SelectPixfmt( - const wuffs_base__image_config& image_config) { - return wuffs_base__make_pixel_format(WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL); -} - -DecodeImageCallbacks::AllocPixbufResult // -DecodeImageCallbacks::AllocPixbuf(const wuffs_base__image_config& image_config, - bool allow_uninitialized_memory) { - uint32_t w = image_config.pixcfg.width(); - uint32_t h = image_config.pixcfg.height(); - if ((w == 0) || (h == 0)) { - return AllocPixbufResult(""); - } - uint64_t len = image_config.pixcfg.pixbuf_len(); - if ((len == 0) || (SIZE_MAX < len)) { - return AllocPixbufResult(DecodeImage_UnsupportedPixelConfiguration); - } - void* ptr = - allow_uninitialized_memory ? malloc((size_t)len) : calloc((size_t)len, 1); - if (!ptr) { - return AllocPixbufResult(DecodeImage_OutOfMemory); - } - wuffs_base__pixel_buffer pixbuf; - wuffs_base__status status = pixbuf.set_from_slice( - &image_config.pixcfg, - wuffs_base__make_slice_u8((uint8_t*)ptr, (size_t)len)); - if (!status.is_ok()) { - free(ptr); - return AllocPixbufResult(status.message()); - } - return AllocPixbufResult(MemOwner(ptr, &free), pixbuf); -} - -DecodeImageCallbacks::AllocWorkbufResult // -DecodeImageCallbacks::AllocWorkbuf(wuffs_base__range_ii_u64 len_range, - bool allow_uninitialized_memory) { - uint64_t len = len_range.max_incl; - if (len == 0) { - return AllocWorkbufResult(""); - } else if (SIZE_MAX < len) { - return AllocWorkbufResult(DecodeImage_OutOfMemory); - } - void* ptr = - allow_uninitialized_memory ? malloc((size_t)len) : calloc((size_t)len, 1); - if (!ptr) { - return AllocWorkbufResult(DecodeImage_OutOfMemory); - } - return AllocWorkbufResult( - MemOwner(ptr, &free), - wuffs_base__make_slice_u8((uint8_t*)ptr, (size_t)len)); -} - -void // -DecodeImageCallbacks::Done( - DecodeImageResult& result, - sync_io::Input& input, - IOBuffer& buffer, - wuffs_base__image_decoder::unique_ptr image_decoder) {} - -const char DecodeImage_BufferIsTooShort[] = // - "wuffs_aux::DecodeImage: buffer is too short"; -const char DecodeImage_MaxInclDimensionExceeded[] = // - "wuffs_aux::DecodeImage: max_incl_dimension exceeded"; -const char DecodeImage_MaxInclMetadataLengthExceeded[] = // - "wuffs_aux::DecodeImage: max_incl_metadata_length exceeded"; -const char DecodeImage_OutOfMemory[] = // - "wuffs_aux::DecodeImage: out of memory"; -const char DecodeImage_UnexpectedEndOfFile[] = // - "wuffs_aux::DecodeImage: unexpected end of file"; -const char DecodeImage_UnsupportedImageFormat[] = // - "wuffs_aux::DecodeImage: unsupported image format"; -const char DecodeImage_UnsupportedMetadata[] = // - "wuffs_aux::DecodeImage: unsupported metadata"; -const char DecodeImage_UnsupportedPixelBlend[] = // - "wuffs_aux::DecodeImage: unsupported pixel blend"; -const char DecodeImage_UnsupportedPixelConfiguration[] = // - "wuffs_aux::DecodeImage: unsupported pixel configuration"; -const char DecodeImage_UnsupportedPixelFormat[] = // - "wuffs_aux::DecodeImage: unsupported pixel format"; - -DecodeImageArgQuirks::DecodeImageArgQuirks(wuffs_base__slice_u32 repr0) - : repr(repr0) {} - -DecodeImageArgQuirks::DecodeImageArgQuirks(uint32_t* ptr0, size_t len0) - : repr(wuffs_base__make_slice_u32(ptr0, len0)) {} - -DecodeImageArgQuirks // -DecodeImageArgQuirks::DefaultValue() { - return DecodeImageArgQuirks(wuffs_base__empty_slice_u32()); -} - -DecodeImageArgFlags::DecodeImageArgFlags(uint64_t repr0) : repr(repr0) {} - -DecodeImageArgFlags // -DecodeImageArgFlags::DefaultValue() { - return DecodeImageArgFlags(0); -} - -DecodeImageArgPixelBlend::DecodeImageArgPixelBlend( - wuffs_base__pixel_blend repr0) - : repr(repr0) {} - -DecodeImageArgPixelBlend // -DecodeImageArgPixelBlend::DefaultValue() { - return DecodeImageArgPixelBlend(WUFFS_BASE__PIXEL_BLEND__SRC); -} - -DecodeImageArgBackgroundColor::DecodeImageArgBackgroundColor( - wuffs_base__color_u32_argb_premul repr0) - : repr(repr0) {} - -DecodeImageArgBackgroundColor // -DecodeImageArgBackgroundColor::DefaultValue() { - return DecodeImageArgBackgroundColor(1); -} - -DecodeImageArgMaxInclDimension::DecodeImageArgMaxInclDimension(uint32_t repr0) - : repr(repr0) {} - -DecodeImageArgMaxInclDimension // -DecodeImageArgMaxInclDimension::DefaultValue() { - return DecodeImageArgMaxInclDimension(1048575); -} - -DecodeImageArgMaxInclMetadataLength::DecodeImageArgMaxInclMetadataLength( - uint64_t repr0) - : repr(repr0) {} - -DecodeImageArgMaxInclMetadataLength // -DecodeImageArgMaxInclMetadataLength::DefaultValue() { - return DecodeImageArgMaxInclMetadataLength(16777215); -} - -// -------- - -namespace { - -const private_impl::ErrorMessages DecodeImageErrorMessages = { - DecodeImage_MaxInclMetadataLengthExceeded, // - DecodeImage_OutOfMemory, // - DecodeImage_UnexpectedEndOfFile, // - DecodeImage_UnsupportedMetadata, // - DecodeImage_UnsupportedImageFormat, // -}; - -std::string // -DecodeImageAdvanceIOBufferTo(sync_io::Input& input, - wuffs_base__io_buffer& io_buf, - uint64_t absolute_position) { - return private_impl::AdvanceIOBufferTo(DecodeImageErrorMessages, input, - io_buf, absolute_position); -} - -wuffs_base__status // -DIHM0(void* self, - wuffs_base__io_buffer* a_dst, - wuffs_base__more_information* a_minfo, - wuffs_base__io_buffer* a_src) { - return wuffs_base__image_decoder__tell_me_more( - static_cast(self), a_dst, a_minfo, a_src); -} - -std::string // -DIHM1(void* self, - const wuffs_base__more_information* minfo, - wuffs_base__slice_u8 raw) { - return static_cast(self)->HandleMetadata(*minfo, raw); -} - -std::string // -DecodeImageHandleMetadata(wuffs_base__image_decoder::unique_ptr& image_decoder, - DecodeImageCallbacks& callbacks, - sync_io::Input& input, - wuffs_base__io_buffer& io_buf, - sync_io::DynIOBuffer& raw_metadata_buf) { - return private_impl::HandleMetadata(DecodeImageErrorMessages, input, io_buf, - raw_metadata_buf, DIHM0, - static_cast(image_decoder.get()), - DIHM1, static_cast(&callbacks)); -} - -DecodeImageResult // -DecodeImage0(wuffs_base__image_decoder::unique_ptr& image_decoder, - DecodeImageCallbacks& callbacks, - sync_io::Input& input, - wuffs_base__io_buffer& io_buf, - wuffs_base__slice_u32 quirks, - uint64_t flags, - wuffs_base__pixel_blend pixel_blend, - wuffs_base__color_u32_argb_premul background_color, - uint32_t max_incl_dimension, - uint64_t max_incl_metadata_length) { - // Check args. - switch (pixel_blend) { - case WUFFS_BASE__PIXEL_BLEND__SRC: - case WUFFS_BASE__PIXEL_BLEND__SRC_OVER: - break; - default: - return DecodeImageResult(DecodeImage_UnsupportedPixelBlend); - } - - wuffs_base__image_config image_config = wuffs_base__null_image_config(); - sync_io::DynIOBuffer raw_metadata_buf(max_incl_metadata_length); - uint64_t start_pos = io_buf.reader_position(); - bool interested_in_metadata_after_the_frame = false; - bool redirected = false; - int32_t fourcc = 0; -redirect: - do { - // Determine the image format. - if (!redirected) { - while (true) { - fourcc = wuffs_base__magic_number_guess_fourcc(io_buf.reader_slice(), - io_buf.meta.closed); - if (fourcc > 0) { - break; - } else if ((fourcc == 0) && (io_buf.reader_length() >= 64)) { - // Having (fourcc == 0) means that Wuffs' built in MIME sniffer - // didn't recognize the image format. Nonetheless, custom callbacks - // may still be able to do their own MIME sniffing, for exotic image - // types. We try to give them at least 64 bytes of prefix data when - // one-shot-calling callbacks.SelectDecoder. There is no mechanism - // for the callbacks to request a longer prefix. - break; - } else if (io_buf.meta.closed || (io_buf.writer_length() == 0)) { - fourcc = 0; - break; - } - std::string error_message = input.CopyIn(&io_buf); - if (!error_message.empty()) { - return DecodeImageResult(std::move(error_message)); - } - } - } else { - wuffs_base__io_buffer empty = wuffs_base__empty_io_buffer(); - wuffs_base__more_information minfo = wuffs_base__empty_more_information(); - wuffs_base__status tmm_status = - image_decoder->tell_me_more(&empty, &minfo, &io_buf); - if (tmm_status.repr != nullptr) { - return DecodeImageResult(tmm_status.message()); - } - if (minfo.flavor != WUFFS_BASE__MORE_INFORMATION__FLAVOR__IO_REDIRECT) { - return DecodeImageResult(DecodeImage_UnsupportedImageFormat); - } - uint64_t pos = minfo.io_redirect__range().min_incl; - if (pos <= start_pos) { - // Redirects must go forward. - return DecodeImageResult(DecodeImage_UnsupportedImageFormat); - } - std::string error_message = - DecodeImageAdvanceIOBufferTo(input, io_buf, pos); - if (!error_message.empty()) { - return DecodeImageResult(std::move(error_message)); - } - fourcc = (int32_t)(minfo.io_redirect__fourcc()); - if (fourcc == 0) { - return DecodeImageResult(DecodeImage_UnsupportedImageFormat); - } - image_decoder.reset(); - } - - // Select the image decoder. - image_decoder = callbacks.SelectDecoder( - (uint32_t)fourcc, io_buf.reader_slice(), io_buf.meta.closed); - if (!image_decoder) { - return DecodeImageResult(DecodeImage_UnsupportedImageFormat); - } - - // Apply quirks. - for (size_t i = 0; i < quirks.len; i++) { - image_decoder->set_quirk(quirks.ptr[i], 1); - } - - // Apply flags. - if (flags != 0) { - if (flags & DecodeImageArgFlags::REPORT_METADATA_CHRM) { - image_decoder->set_report_metadata(WUFFS_BASE__FOURCC__CHRM, true); - } - if (flags & DecodeImageArgFlags::REPORT_METADATA_EXIF) { - interested_in_metadata_after_the_frame = true; - image_decoder->set_report_metadata(WUFFS_BASE__FOURCC__EXIF, true); - } - if (flags & DecodeImageArgFlags::REPORT_METADATA_GAMA) { - image_decoder->set_report_metadata(WUFFS_BASE__FOURCC__GAMA, true); - } - if (flags & DecodeImageArgFlags::REPORT_METADATA_ICCP) { - image_decoder->set_report_metadata(WUFFS_BASE__FOURCC__ICCP, true); - } - if (flags & DecodeImageArgFlags::REPORT_METADATA_KVP) { - interested_in_metadata_after_the_frame = true; - image_decoder->set_report_metadata(WUFFS_BASE__FOURCC__KVP, true); - } - if (flags & DecodeImageArgFlags::REPORT_METADATA_SRGB) { - image_decoder->set_report_metadata(WUFFS_BASE__FOURCC__SRGB, true); - } - if (flags & DecodeImageArgFlags::REPORT_METADATA_XMP) { - interested_in_metadata_after_the_frame = true; - image_decoder->set_report_metadata(WUFFS_BASE__FOURCC__XMP, true); - } - } - - // Decode the image config. - while (true) { - wuffs_base__status id_dic_status = - image_decoder->decode_image_config(&image_config, &io_buf); - if (id_dic_status.repr == nullptr) { - break; - } else if (id_dic_status.repr == wuffs_base__note__i_o_redirect) { - if (redirected) { - return DecodeImageResult(DecodeImage_UnsupportedImageFormat); - } - redirected = true; - goto redirect; - } else if (id_dic_status.repr == wuffs_base__note__metadata_reported) { - std::string error_message = DecodeImageHandleMetadata( - image_decoder, callbacks, input, io_buf, raw_metadata_buf); - if (!error_message.empty()) { - return DecodeImageResult(std::move(error_message)); - } - } else if (id_dic_status.repr != wuffs_base__suspension__short_read) { - return DecodeImageResult(id_dic_status.message()); - } else if (io_buf.meta.closed) { - return DecodeImageResult(DecodeImage_UnexpectedEndOfFile); - } else { - std::string error_message = input.CopyIn(&io_buf); - if (!error_message.empty()) { - return DecodeImageResult(std::move(error_message)); - } - } - } - } while (false); - if (!interested_in_metadata_after_the_frame) { - raw_metadata_buf.drop(); - } - - // Select the pixel format. - uint32_t w = image_config.pixcfg.width(); - uint32_t h = image_config.pixcfg.height(); - if ((w > max_incl_dimension) || (h > max_incl_dimension)) { - return DecodeImageResult(DecodeImage_MaxInclDimensionExceeded); - } - wuffs_base__pixel_format pixel_format = callbacks.SelectPixfmt(image_config); - if (pixel_format.repr != image_config.pixcfg.pixel_format().repr) { - switch (pixel_format.repr) { - case WUFFS_BASE__PIXEL_FORMAT__BGR_565: - case WUFFS_BASE__PIXEL_FORMAT__BGR: - case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL: - case WUFFS_BASE__PIXEL_FORMAT__BGRA_NONPREMUL_4X16LE: - case WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL: - case WUFFS_BASE__PIXEL_FORMAT__RGBA_NONPREMUL: - case WUFFS_BASE__PIXEL_FORMAT__RGBA_PREMUL: - break; - default: - return DecodeImageResult(DecodeImage_UnsupportedPixelFormat); - } - image_config.pixcfg.set(pixel_format.repr, - WUFFS_BASE__PIXEL_SUBSAMPLING__NONE, w, h); - } - - // Allocate the pixel buffer. - bool valid_background_color = - wuffs_base__color_u32_argb_premul__is_valid(background_color); - DecodeImageCallbacks::AllocPixbufResult alloc_pixbuf_result = - callbacks.AllocPixbuf(image_config, valid_background_color); - if (!alloc_pixbuf_result.error_message.empty()) { - return DecodeImageResult(std::move(alloc_pixbuf_result.error_message)); - } - wuffs_base__pixel_buffer pixel_buffer = alloc_pixbuf_result.pixbuf; - if (valid_background_color) { - wuffs_base__status pb_scufr_status = pixel_buffer.set_color_u32_fill_rect( - pixel_buffer.pixcfg.bounds(), background_color); - if (pb_scufr_status.repr != nullptr) { - return DecodeImageResult(pb_scufr_status.message()); - } - } - - // Allocate the work buffer. Wuffs' decoders conventionally assume that this - // can be uninitialized memory. - wuffs_base__range_ii_u64 workbuf_len = image_decoder->workbuf_len(); - DecodeImageCallbacks::AllocWorkbufResult alloc_workbuf_result = - callbacks.AllocWorkbuf(workbuf_len, true); - if (!alloc_workbuf_result.error_message.empty()) { - return DecodeImageResult(std::move(alloc_workbuf_result.error_message)); - } else if (alloc_workbuf_result.workbuf.len < workbuf_len.min_incl) { - return DecodeImageResult(DecodeImage_BufferIsTooShort); - } - - // Decode the frame config. - wuffs_base__frame_config frame_config = wuffs_base__null_frame_config(); - while (true) { - wuffs_base__status id_dfc_status = - image_decoder->decode_frame_config(&frame_config, &io_buf); - if (id_dfc_status.repr == nullptr) { - break; - } else if (id_dfc_status.repr == wuffs_base__note__metadata_reported) { - std::string error_message = DecodeImageHandleMetadata( - image_decoder, callbacks, input, io_buf, raw_metadata_buf); - if (!error_message.empty()) { - return DecodeImageResult(std::move(error_message)); - } - } else if (id_dfc_status.repr != wuffs_base__suspension__short_read) { - return DecodeImageResult(id_dfc_status.message()); - } else if (io_buf.meta.closed) { - return DecodeImageResult(DecodeImage_UnexpectedEndOfFile); - } else { - std::string error_message = input.CopyIn(&io_buf); - if (!error_message.empty()) { - return DecodeImageResult(std::move(error_message)); - } - } - } - - // Decode the frame (the pixels). - // - // From here on, always returns the pixel_buffer. If we get this far, we can - // still display a partial image, even if we encounter an error. - std::string message(""); - if ((pixel_blend == WUFFS_BASE__PIXEL_BLEND__SRC_OVER) && - frame_config.overwrite_instead_of_blend()) { - pixel_blend = WUFFS_BASE__PIXEL_BLEND__SRC; - } - while (true) { - wuffs_base__status id_df_status = - image_decoder->decode_frame(&pixel_buffer, &io_buf, pixel_blend, - alloc_workbuf_result.workbuf, nullptr); - if (id_df_status.repr == nullptr) { - break; - } else if (id_df_status.repr != wuffs_base__suspension__short_read) { - message = id_df_status.message(); - break; - } else if (io_buf.meta.closed) { - message = DecodeImage_UnexpectedEndOfFile; - break; - } else { - std::string error_message = input.CopyIn(&io_buf); - if (!error_message.empty()) { - message = std::move(error_message); - break; - } - } - } - - // Decode any metadata after the frame. - if (interested_in_metadata_after_the_frame) { - while (true) { - wuffs_base__status id_dfc_status = - image_decoder->decode_frame_config(NULL, &io_buf); - if (id_dfc_status.repr == wuffs_base__note__end_of_data) { - break; - } else if (id_dfc_status.repr == nullptr) { - continue; - } else if (id_dfc_status.repr == wuffs_base__note__metadata_reported) { - std::string error_message = DecodeImageHandleMetadata( - image_decoder, callbacks, input, io_buf, raw_metadata_buf); - if (!error_message.empty()) { - return DecodeImageResult(std::move(error_message)); - } - } else if (id_dfc_status.repr != wuffs_base__suspension__short_read) { - return DecodeImageResult(id_dfc_status.message()); - } else if (io_buf.meta.closed) { - return DecodeImageResult(DecodeImage_UnexpectedEndOfFile); - } else { - std::string error_message = input.CopyIn(&io_buf); - if (!error_message.empty()) { - return DecodeImageResult(std::move(error_message)); - } - } - } - } - - return DecodeImageResult(std::move(alloc_pixbuf_result.mem_owner), - pixel_buffer, std::move(message)); -} - -} // namespace - -DecodeImageResult // -DecodeImage(DecodeImageCallbacks& callbacks, - sync_io::Input& input, - DecodeImageArgQuirks quirks, - DecodeImageArgFlags flags, - DecodeImageArgPixelBlend pixel_blend, - DecodeImageArgBackgroundColor background_color, - DecodeImageArgMaxInclDimension max_incl_dimension, - DecodeImageArgMaxInclMetadataLength max_incl_metadata_length) { - wuffs_base__io_buffer* io_buf = input.BringsItsOwnIOBuffer(); - wuffs_base__io_buffer fallback_io_buf = wuffs_base__empty_io_buffer(); - std::unique_ptr fallback_io_array(nullptr); - if (!io_buf) { - fallback_io_array = std::unique_ptr(new uint8_t[32768]); - fallback_io_buf = - wuffs_base__ptr_u8__writer(fallback_io_array.get(), 32768); - io_buf = &fallback_io_buf; - } - - wuffs_base__image_decoder::unique_ptr image_decoder(nullptr, &free); - DecodeImageResult result = - DecodeImage0(image_decoder, callbacks, input, *io_buf, quirks.repr, - flags.repr, pixel_blend.repr, background_color.repr, - max_incl_dimension.repr, max_incl_metadata_length.repr); - callbacks.Done(result, input, *io_buf, std::move(image_decoder)); - return result; -} - -} // namespace wuffs_aux - -#endif // !defined(WUFFS_CONFIG__MODULES) || - // defined(WUFFS_CONFIG__MODULE__AUX__IMAGE) - -// ---------------- Auxiliary - JSON - -#if !defined(WUFFS_CONFIG__MODULES) || defined(WUFFS_CONFIG__MODULE__AUX__JSON) - -#include - -namespace wuffs_aux { - -DecodeJsonResult::DecodeJsonResult(std::string&& error_message0, - uint64_t cursor_position0) - : error_message(std::move(error_message0)), - cursor_position(cursor_position0) {} - -DecodeJsonCallbacks::~DecodeJsonCallbacks() {} - -void // -DecodeJsonCallbacks::Done(DecodeJsonResult& result, - sync_io::Input& input, - IOBuffer& buffer) {} - -const char DecodeJson_BadJsonPointer[] = // - "wuffs_aux::DecodeJson: bad JSON Pointer"; -const char DecodeJson_NoMatch[] = // - "wuffs_aux::DecodeJson: no match"; - -DecodeJsonArgQuirks::DecodeJsonArgQuirks(wuffs_base__slice_u32 repr0) - : repr(repr0) {} - -DecodeJsonArgQuirks::DecodeJsonArgQuirks(uint32_t* ptr0, size_t len0) - : repr(wuffs_base__make_slice_u32(ptr0, len0)) {} - -DecodeJsonArgQuirks // -DecodeJsonArgQuirks::DefaultValue() { - return DecodeJsonArgQuirks(wuffs_base__empty_slice_u32()); -} - -DecodeJsonArgJsonPointer::DecodeJsonArgJsonPointer(std::string repr0) - : repr(repr0) {} - -DecodeJsonArgJsonPointer // -DecodeJsonArgJsonPointer::DefaultValue() { - return DecodeJsonArgJsonPointer(std::string()); -} - -// -------- - -#define WUFFS_AUX__DECODE_JSON__GET_THE_NEXT_TOKEN \ - while (tok_buf.meta.ri >= tok_buf.meta.wi) { \ - if (tok_status.repr == nullptr) { \ - goto done; \ - } else if (tok_status.repr == wuffs_base__suspension__short_write) { \ - tok_buf.compact(); \ - } else if (tok_status.repr == wuffs_base__suspension__short_read) { \ - if (!io_error_message.empty()) { \ - ret_error_message = std::move(io_error_message); \ - goto done; \ - } else if (cursor_index != io_buf->meta.ri) { \ - ret_error_message = \ - "wuffs_aux::DecodeJson: internal error: bad cursor_index"; \ - goto done; \ - } else if (io_buf->meta.closed) { \ - ret_error_message = \ - "wuffs_aux::DecodeJson: internal error: io_buf is closed"; \ - goto done; \ - } \ - io_buf->compact(); \ - if (io_buf->meta.wi >= io_buf->data.len) { \ - ret_error_message = \ - "wuffs_aux::DecodeJson: internal error: io_buf is full"; \ - goto done; \ - } \ - cursor_index = io_buf->meta.ri; \ - io_error_message = input.CopyIn(io_buf); \ - } else { \ - ret_error_message = tok_status.message(); \ - goto done; \ - } \ - tok_status = \ - dec->decode_tokens(&tok_buf, io_buf, wuffs_base__empty_slice_u8()); \ - if ((tok_buf.meta.ri > tok_buf.meta.wi) || \ - (tok_buf.meta.wi > tok_buf.data.len) || \ - (io_buf->meta.ri > io_buf->meta.wi) || \ - (io_buf->meta.wi > io_buf->data.len)) { \ - ret_error_message = \ - "wuffs_aux::DecodeJson: internal error: bad buffer indexes"; \ - goto done; \ - } \ - } \ - wuffs_base__token token = tok_buf.data.ptr[tok_buf.meta.ri++]; \ - uint64_t token_len = token.length(); \ - if ((io_buf->meta.ri < cursor_index) || \ - ((io_buf->meta.ri - cursor_index) < token_len)) { \ - ret_error_message = \ - "wuffs_aux::DecodeJson: internal error: bad token indexes"; \ - goto done; \ - } \ - uint8_t* token_ptr = io_buf->data.ptr + cursor_index; \ - (void)(token_ptr); \ - cursor_index += static_cast(token_len) - -// -------- - -namespace { - -// DecodeJson_SplitJsonPointer returns ("bar", 8) for ("/foo/bar/b~1z/qux", 5, -// etc). It returns a 0 size_t when s has invalid JSON Pointer syntax or i is -// out of bounds. -// -// The string returned is unescaped. If calling it again, this time with i=8, -// the "b~1z" substring would be returned as "b/z". -std::pair // -DecodeJson_SplitJsonPointer(std::string& s, - size_t i, - bool allow_tilde_n_tilde_r_tilde_t) { - std::string fragment; - if (i > s.size()) { - return std::make_pair(std::string(), 0); - } - while (i < s.size()) { - char c = s[i]; - if (c == '/') { - break; - } else if (c != '~') { - fragment.push_back(c); - i++; - continue; - } - i++; - if (i >= s.size()) { - return std::make_pair(std::string(), 0); - } - c = s[i]; - if (c == '0') { - fragment.push_back('~'); - i++; - continue; - } else if (c == '1') { - fragment.push_back('/'); - i++; - continue; - } else if (allow_tilde_n_tilde_r_tilde_t) { - if (c == 'n') { - fragment.push_back('\n'); - i++; - continue; - } else if (c == 'r') { - fragment.push_back('\r'); - i++; - continue; - } else if (c == 't') { - fragment.push_back('\t'); - i++; - continue; - } - } - return std::make_pair(std::string(), 0); - } - return std::make_pair(std::move(fragment), i); -} - -// -------- - -std::string // -DecodeJson_WalkJsonPointerFragment(wuffs_base__token_buffer& tok_buf, - wuffs_base__status& tok_status, - wuffs_json__decoder::unique_ptr& dec, - wuffs_base__io_buffer* io_buf, - std::string& io_error_message, - size_t& cursor_index, - sync_io::Input& input, - std::string& json_pointer_fragment) { - std::string ret_error_message; - while (true) { - WUFFS_AUX__DECODE_JSON__GET_THE_NEXT_TOKEN; - - int64_t vbc = token.value_base_category(); - uint64_t vbd = token.value_base_detail(); - if (vbc == WUFFS_BASE__TOKEN__VBC__FILLER) { - continue; - } else if ((vbc != WUFFS_BASE__TOKEN__VBC__STRUCTURE) || - !(vbd & WUFFS_BASE__TOKEN__VBD__STRUCTURE__PUSH)) { - return DecodeJson_NoMatch; - } else if (vbd & WUFFS_BASE__TOKEN__VBD__STRUCTURE__TO_LIST) { - goto do_list; - } - goto do_dict; - } - -do_dict: - // Alternate between these two things: - // 1. Decode the next dict key (a string). If it matches the fragment, we're - // done (success). If we've reached the dict's end (VBD__STRUCTURE__POP) - // so that there was no next dict key, we're done (failure). - // 2. Otherwise, skip the next dict value. - while (true) { - for (std::string str; true;) { - WUFFS_AUX__DECODE_JSON__GET_THE_NEXT_TOKEN; - - int64_t vbc = token.value_base_category(); - uint64_t vbd = token.value_base_detail(); - switch (vbc) { - case WUFFS_BASE__TOKEN__VBC__FILLER: - continue; - - case WUFFS_BASE__TOKEN__VBC__STRUCTURE: - if (vbd & WUFFS_BASE__TOKEN__VBD__STRUCTURE__PUSH) { - goto fail; - } - return DecodeJson_NoMatch; - - case WUFFS_BASE__TOKEN__VBC__STRING: { - if (vbd & WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_0_DST_1_SRC_DROP) { - // No-op. - } else if (vbd & - WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_1_DST_1_SRC_COPY) { - const char* ptr = // Convert from (uint8_t*). - static_cast(static_cast(token_ptr)); - str.append(ptr, static_cast(token_len)); - } else { - goto fail; - } - break; - } - - case WUFFS_BASE__TOKEN__VBC__UNICODE_CODE_POINT: { - uint8_t u[WUFFS_BASE__UTF_8__BYTE_LENGTH__MAX_INCL]; - size_t n = wuffs_base__utf_8__encode( - wuffs_base__make_slice_u8( - &u[0], WUFFS_BASE__UTF_8__BYTE_LENGTH__MAX_INCL), - static_cast(vbd)); - const char* ptr = // Convert from (uint8_t*). - static_cast(static_cast(&u[0])); - str.append(ptr, n); - break; - } - - default: - goto fail; - } - - if (token.continued()) { - continue; - } - if (str == json_pointer_fragment) { - return ""; - } - goto skip_the_next_dict_value; - } - - skip_the_next_dict_value: - for (uint32_t skip_depth = 0; true;) { - WUFFS_AUX__DECODE_JSON__GET_THE_NEXT_TOKEN; - - int64_t vbc = token.value_base_category(); - uint64_t vbd = token.value_base_detail(); - if (token.continued() || (vbc == WUFFS_BASE__TOKEN__VBC__FILLER)) { - continue; - } else if (vbc == WUFFS_BASE__TOKEN__VBC__STRUCTURE) { - if (vbd & WUFFS_BASE__TOKEN__VBD__STRUCTURE__PUSH) { - skip_depth++; - continue; - } - skip_depth--; - } - - if (skip_depth == 0) { - break; - } - } // skip_the_next_dict_value - } // do_dict - -do_list: - do { - wuffs_base__result_u64 result_u64 = wuffs_base__parse_number_u64( - wuffs_base__make_slice_u8( - static_cast(static_cast( - const_cast(json_pointer_fragment.data()))), - json_pointer_fragment.size()), - WUFFS_BASE__PARSE_NUMBER_XXX__DEFAULT_OPTIONS); - if (!result_u64.status.is_ok()) { - return DecodeJson_NoMatch; - } - uint64_t remaining = result_u64.value; - if (remaining == 0) { - goto check_that_a_value_follows; - } - for (uint32_t skip_depth = 0; true;) { - WUFFS_AUX__DECODE_JSON__GET_THE_NEXT_TOKEN; - - int64_t vbc = token.value_base_category(); - uint64_t vbd = token.value_base_detail(); - if (token.continued() || (vbc == WUFFS_BASE__TOKEN__VBC__FILLER)) { - continue; - } else if (vbc == WUFFS_BASE__TOKEN__VBC__STRUCTURE) { - if (vbd & WUFFS_BASE__TOKEN__VBD__STRUCTURE__PUSH) { - skip_depth++; - continue; - } - if (skip_depth == 0) { - return DecodeJson_NoMatch; - } - skip_depth--; - } - - if (skip_depth > 0) { - continue; - } - remaining--; - if (remaining == 0) { - goto check_that_a_value_follows; - } - } - } while (false); // do_list - -check_that_a_value_follows: - while (true) { - WUFFS_AUX__DECODE_JSON__GET_THE_NEXT_TOKEN; - - int64_t vbc = token.value_base_category(); - uint64_t vbd = token.value_base_detail(); - if (vbc == WUFFS_BASE__TOKEN__VBC__FILLER) { - continue; - } - - // Undo the last part of WUFFS_AUX__DECODE_JSON__GET_THE_NEXT_TOKEN, so - // that we're only peeking at the next token. - tok_buf.meta.ri--; - cursor_index -= static_cast(token_len); - - if ((vbc == WUFFS_BASE__TOKEN__VBC__STRUCTURE) && - (vbd & WUFFS_BASE__TOKEN__VBD__STRUCTURE__POP)) { - return DecodeJson_NoMatch; - } - return ""; - } // check_that_a_value_follows - -fail: - return "wuffs_aux::DecodeJson: internal error: unexpected token"; -done: - return ret_error_message; -} - -} // namespace - -// -------- - -DecodeJsonResult // -DecodeJson(DecodeJsonCallbacks& callbacks, - sync_io::Input& input, - DecodeJsonArgQuirks quirks, - DecodeJsonArgJsonPointer json_pointer) { - // Prepare the wuffs_base__io_buffer and the resultant error_message. - wuffs_base__io_buffer* io_buf = input.BringsItsOwnIOBuffer(); - wuffs_base__io_buffer fallback_io_buf = wuffs_base__empty_io_buffer(); - std::unique_ptr fallback_io_array(nullptr); - if (!io_buf) { - fallback_io_array = std::unique_ptr(new uint8_t[4096]); - fallback_io_buf = wuffs_base__ptr_u8__writer(fallback_io_array.get(), 4096); - io_buf = &fallback_io_buf; - } - // cursor_index is discussed at - // https://nigeltao.github.io/blog/2020/jsonptr.html#the-cursor-index - size_t cursor_index = 0; - std::string ret_error_message; - std::string io_error_message; - - do { - // Prepare the low-level JSON decoder. - wuffs_json__decoder::unique_ptr dec = wuffs_json__decoder::alloc(); - if (!dec) { - ret_error_message = "wuffs_aux::DecodeJson: out of memory"; - goto done; - } else if (WUFFS_JSON__DECODER_WORKBUF_LEN_MAX_INCL_WORST_CASE != 0) { - ret_error_message = - "wuffs_aux::DecodeJson: internal error: bad WORKBUF_LEN"; - goto done; - } - bool allow_tilde_n_tilde_r_tilde_t = false; - for (size_t i = 0; i < quirks.repr.len; i++) { - dec->set_quirk(quirks.repr.ptr[i], 1); - if (quirks.repr.ptr[i] == - WUFFS_JSON__QUIRK_JSON_POINTER_ALLOW_TILDE_N_TILDE_R_TILDE_T) { - allow_tilde_n_tilde_r_tilde_t = true; - } - } - - // Prepare the wuffs_base__tok_buffer. 256 tokens is 2KiB. - wuffs_base__token tok_array[256]; - wuffs_base__token_buffer tok_buf = - wuffs_base__slice_token__writer(wuffs_base__make_slice_token( - &tok_array[0], (sizeof(tok_array) / sizeof(tok_array[0])))); - wuffs_base__status tok_status = - dec->decode_tokens(&tok_buf, io_buf, wuffs_base__empty_slice_u8()); - - // Prepare other state. - int32_t depth = 0; - std::string str; - - // Walk the (optional) JSON Pointer. - for (size_t i = 0; i < json_pointer.repr.size();) { - if (json_pointer.repr[i] != '/') { - ret_error_message = DecodeJson_BadJsonPointer; - goto done; - } - std::pair split = DecodeJson_SplitJsonPointer( - json_pointer.repr, i + 1, allow_tilde_n_tilde_r_tilde_t); - i = split.second; - if (i == 0) { - ret_error_message = DecodeJson_BadJsonPointer; - goto done; - } - ret_error_message = DecodeJson_WalkJsonPointerFragment( - tok_buf, tok_status, dec, io_buf, io_error_message, cursor_index, - input, split.first); - if (!ret_error_message.empty()) { - goto done; - } - } - - // Loop, doing these two things: - // 1. Get the next token. - // 2. Process that token. - while (true) { - WUFFS_AUX__DECODE_JSON__GET_THE_NEXT_TOKEN; - - int64_t vbc = token.value_base_category(); - uint64_t vbd = token.value_base_detail(); - switch (vbc) { - case WUFFS_BASE__TOKEN__VBC__FILLER: - continue; - - case WUFFS_BASE__TOKEN__VBC__STRUCTURE: { - if (vbd & WUFFS_BASE__TOKEN__VBD__STRUCTURE__PUSH) { - ret_error_message = callbacks.Push(static_cast(vbd)); - if (!ret_error_message.empty()) { - goto done; - } - depth++; - if (depth > WUFFS_JSON__DECODER_DEPTH_MAX_INCL) { - ret_error_message = - "wuffs_aux::DecodeJson: internal error: bad depth"; - goto done; - } - continue; - } - ret_error_message = callbacks.Pop(static_cast(vbd)); - depth--; - if (depth < 0) { - ret_error_message = - "wuffs_aux::DecodeJson: internal error: bad depth"; - goto done; - } - goto parsed_a_value; - } - - case WUFFS_BASE__TOKEN__VBC__STRING: { - if (vbd & WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_0_DST_1_SRC_DROP) { - // No-op. - } else if (vbd & - WUFFS_BASE__TOKEN__VBD__STRING__CONVERT_1_DST_1_SRC_COPY) { - const char* ptr = // Convert from (uint8_t*). - static_cast(static_cast(token_ptr)); - str.append(ptr, static_cast(token_len)); - } else { - goto fail; - } - if (token.continued()) { - continue; - } - ret_error_message = callbacks.AppendTextString(std::move(str)); - str.clear(); - goto parsed_a_value; - } - - case WUFFS_BASE__TOKEN__VBC__UNICODE_CODE_POINT: { - uint8_t u[WUFFS_BASE__UTF_8__BYTE_LENGTH__MAX_INCL]; - size_t n = wuffs_base__utf_8__encode( - wuffs_base__make_slice_u8( - &u[0], WUFFS_BASE__UTF_8__BYTE_LENGTH__MAX_INCL), - static_cast(vbd)); - const char* ptr = // Convert from (uint8_t*). - static_cast(static_cast(&u[0])); - str.append(ptr, n); - if (token.continued()) { - continue; - } - goto fail; - } - - case WUFFS_BASE__TOKEN__VBC__LITERAL: { - ret_error_message = - (vbd & WUFFS_BASE__TOKEN__VBD__LITERAL__NULL) - ? callbacks.AppendNull() - : callbacks.AppendBool(vbd & - WUFFS_BASE__TOKEN__VBD__LITERAL__TRUE); - goto parsed_a_value; - } - - case WUFFS_BASE__TOKEN__VBC__NUMBER: { - if (vbd & WUFFS_BASE__TOKEN__VBD__NUMBER__FORMAT_TEXT) { - if (vbd & WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_INTEGER_SIGNED) { - wuffs_base__result_i64 r = wuffs_base__parse_number_i64( - wuffs_base__make_slice_u8(token_ptr, - static_cast(token_len)), - WUFFS_BASE__PARSE_NUMBER_XXX__DEFAULT_OPTIONS); - if (r.status.is_ok()) { - ret_error_message = callbacks.AppendI64(r.value); - goto parsed_a_value; - } - } - if (vbd & WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_FLOATING_POINT) { - wuffs_base__result_f64 r = wuffs_base__parse_number_f64( - wuffs_base__make_slice_u8(token_ptr, - static_cast(token_len)), - WUFFS_BASE__PARSE_NUMBER_XXX__DEFAULT_OPTIONS); - if (r.status.is_ok()) { - ret_error_message = callbacks.AppendF64(r.value); - goto parsed_a_value; - } - } - } else if (vbd & WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_NEG_INF) { - ret_error_message = callbacks.AppendF64( - wuffs_base__ieee_754_bit_representation__from_u64_to_f64( - 0xFFF0000000000000ul)); - goto parsed_a_value; - } else if (vbd & WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_POS_INF) { - ret_error_message = callbacks.AppendF64( - wuffs_base__ieee_754_bit_representation__from_u64_to_f64( - 0x7FF0000000000000ul)); - goto parsed_a_value; - } else if (vbd & WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_NEG_NAN) { - ret_error_message = callbacks.AppendF64( - wuffs_base__ieee_754_bit_representation__from_u64_to_f64( - 0xFFFFFFFFFFFFFFFFul)); - goto parsed_a_value; - } else if (vbd & WUFFS_BASE__TOKEN__VBD__NUMBER__CONTENT_POS_NAN) { - ret_error_message = callbacks.AppendF64( - wuffs_base__ieee_754_bit_representation__from_u64_to_f64( - 0x7FFFFFFFFFFFFFFFul)); - goto parsed_a_value; - } - goto fail; - } - } - - fail: - ret_error_message = - "wuffs_aux::DecodeJson: internal error: unexpected token"; - goto done; - - parsed_a_value: - // If an error was encountered, we are done. Otherwise, (depth == 0) - // after parsing a value is equivalent to having decoded the entire JSON - // value (for an empty json_pointer query) or having decoded the - // pointed-to JSON value (for a non-empty json_pointer query). In the - // latter case, we are also done. - // - // However, if quirks like WUFFS_JSON__QUIRK_ALLOW_TRAILING_FILLER or - // WUFFS_JSON__QUIRK_EXPECT_TRAILING_NEW_LINE_OR_EOF are passed, decoding - // the entire JSON value should also consume any trailing filler, in case - // the DecodeJson caller wants to subsequently check that the input is - // completely exhausted (and otherwise raise "valid JSON followed by - // further (unexpected) data"). We aren't done yet. Instead, keep the - // loop running until WUFFS_AUX__DECODE_JSON__GET_THE_NEXT_TOKEN's - // decode_tokens returns an ok status. - if (!ret_error_message.empty() || - ((depth == 0) && !json_pointer.repr.empty())) { - goto done; - } - } - } while (false); - -done: - DecodeJsonResult result( - std::move(ret_error_message), - wuffs_base__u64__sat_add(io_buf->meta.pos, cursor_index)); - callbacks.Done(result, input, *io_buf); - return result; -} - -#undef WUFFS_AUX__DECODE_JSON__GET_THE_NEXT_TOKEN - -} // namespace wuffs_aux - -#endif // !defined(WUFFS_CONFIG__MODULES) || - // defined(WUFFS_CONFIG__MODULE__AUX__JSON) - -#endif // defined(__cplusplus) && defined(WUFFS_BASE__HAVE_UNIQUE_PTR) - -#endif // WUFFS_IMPLEMENTATION - -#if defined(__GNUC__) -#pragma GCC diagnostic pop -#elif defined(__clang__) -#pragma clang diagnostic pop -#endif - -#endif // WUFFS_INCLUDE_GUARD