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73bb3c8530
- Improved compression for triangular meshes (~10%) - Added WebAssembly decoder - Code cleanup + robustness fixes
37 lines
1018 B
C++
37 lines
1018 B
C++
#ifndef DRACO_CORE_SYMBOL_BIT_ENCODER_H_
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#define DRACO_CORE_SYMBOL_BIT_ENCODER_H_
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#include <algorithm>
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#include <vector>
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#include "core/encoder_buffer.h"
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namespace draco {
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// Class for encoding bits using the symbol entropy encoding. Wraps
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// |EncodeSymbols|. Note that this uses a symbol-based encoding scheme for
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// encoding bits.
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class SymbolBitEncoder {
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public:
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// Must be called before any Encode* function is called.
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void StartEncoding() { Clear(); }
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// Encode one bit. If |bit| is true encode a 1, otherwise encode a 0.
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void EncodeBit(bool bit) { EncodeLeastSignificantBits32(1, bit ? 1 : 0); }
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// Encode |nibts| LSBs of |value| as a symbol. |nbits| must be > 0 and <= 32.
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void EncodeLeastSignificantBits32(int nbits, uint32_t value);
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// Ends the bit encoding and stores the result into the target_buffer.
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void EndEncoding(EncoderBuffer *target_buffer);
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private:
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void Clear();
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std::vector<uint32_t> symbols_;
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};
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} // namespace draco
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#endif // DRACO_CORE_SYMBOL_BIT_ENCODER_H_
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