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8374e14042
1. More optimized selection of prediction schemes for different compression levels on the encoder side. 2. Improved robustness to tampered input data (.drc) 3. Added support for strognly typed vectors of bools 4. Support for logging and squared lenght to our VectorND class 5. Added support for partially defined indices in .OBJ files 6. Added support for loading of normal vectors in .PLY files
81 lines
2.8 KiB
C++
81 lines
2.8 KiB
C++
// Copyright 2016 The Draco Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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#ifndef DRACO_CORE_DATA_BUFFER_H_
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#define DRACO_CORE_DATA_BUFFER_H_
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#include <cstring>
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#include <ostream>
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#include <vector>
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#include "core/draco_types.h"
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namespace draco {
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// Buffer descriptor servers as a unique identifier of a buffer.
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struct DataBufferDescriptor {
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DataBufferDescriptor() : buffer_id(0), buffer_update_count(0) {}
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// Id of the data buffer.
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int64_t buffer_id;
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// The number of times the buffer content was updated.
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int64_t buffer_update_count;
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};
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// Class used for storing raw buffer data.
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class DataBuffer {
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public:
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DataBuffer();
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bool Update(const void *data, int64_t size);
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// TODO(zhafang): The two update functions should be combined. I will
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// leave for now in case it breaks any geometry compression tools.
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bool Update(const void *data, int64_t size, int64_t offset);
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void WriteDataToStream(std::ostream &stream);
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// Reads data from the buffer. Potentially unsafe, called needs to ensure
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// the accessed memory is valid.
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void Read(int64_t byte_pos, void *out_data, size_t data_size) const {
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memcpy(out_data, data() + byte_pos, data_size);
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}
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// Writes data to the buffer. Unsafe, caller must ensure the accessed memory
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// is valid.
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void Write(int64_t byte_pos, const void *in_data, size_t data_size) {
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memcpy(const_cast<uint8_t *>(data()) + byte_pos, in_data, data_size);
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}
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// Copies data from another buffer to this buffer.
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void Copy(int64_t dst_offset, const DataBuffer *src_buf, int64_t src_offset,
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int64_t size) {
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memcpy(const_cast<uint8_t *>(data()) + dst_offset,
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src_buf->data() + src_offset, size);
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}
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void set_update_count(int64_t buffer_update_count) {
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descriptor_.buffer_update_count = buffer_update_count;
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}
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int64_t update_count() const { return descriptor_.buffer_update_count; }
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size_t data_size() const { return data_.size(); }
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const uint8_t *data() const { return data_.data(); }
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int64_t buffer_id() const { return descriptor_.buffer_id; }
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void set_buffer_id(int64_t buffer_id) { descriptor_.buffer_id = buffer_id; }
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private:
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std::vector<uint8_t> data_;
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// Counter incremented by Update() calls.
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DataBufferDescriptor descriptor_;
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};
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} // namespace draco
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#endif // DRACO_CORE_DATA_BUFFER_H_
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