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| AZ_CLASS_ALLOCATOR (CompressorZStd, AZ::SystemAllocator) |
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| CompressorZStd (unsigned int decompressionCachePerStream=64 *1024, unsigned int dataBufferSize=128 *1024) |
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AZ::u32 | GetTypeId () const override |
| Return compressor type id.
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bool | ReadHeaderAndData (CompressorStream *stream, AZ::u8 *data, unsigned int dataSize) override |
| Called when we open a stream to Read for the first time. Data contains the first. dataSize <= m_maxHeaderSize.
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bool | WriteHeaderAndData (CompressorStream *stream) override |
| Called when we are about to start writing to a compressed stream.
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SizeType | Read (CompressorStream *stream, SizeType byteSize, SizeType offset, void *buffer) override |
| Forwarded function from the Device when we from a compressed stream.
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SizeType | Write (CompressorStream *stream, SizeType byteSize, const void *data, SizeType offset=SizeType(-1)) override |
| Forwarded function from the Device when we write to a compressed stream.
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bool | WriteSeekPoint (CompressorStream *stream) override |
| Write a seek point.
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bool | StartCompressor (CompressorStream *stream, int compressionLevel, SizeType autoSeekDataSize) override |
| Set auto seek point even dataSize bytes.
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bool | Close (CompressorStream *stream) override |
| Called just before we close the stream. All compression data will be flushed and finalized. (You can't add data afterwards).
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virtual | ~Compressor () |
| When we open a stream to check if it's compressed we read the first m_maxHeaderSize bytes.
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virtual AZ::u32 | GetTypeId () const =0 |
| Return compressor type id.
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virtual bool | ReadHeaderAndData (CompressorStream *stream, AZ::u8 *data, unsigned int dataSize)=0 |
| Called when we open a stream to Read for the first time. Data contains the first. dataSize <= m_maxHeaderSize.
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virtual bool | WriteHeaderAndData (CompressorStream *stream) |
| Called when we are about to start writing to a compressed stream. (Must be called first to write compressor header)
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virtual SizeType | Read (CompressorStream *stream, SizeType byteSize, SizeType offset, void *buffer)=0 |
| Forwarded function from the Device when we from a compressed stream.
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virtual SizeType | Write (CompressorStream *stream, SizeType byteSize, const void *data, SizeType offset=SizeType(-1))=0 |
| Forwarded function from the Device when we write to a compressed stream.
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virtual bool | WriteSeekPoint (CompressorStream *stream) |
| Write a seek point.
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virtual bool | StartCompressor (CompressorStream *stream, int compressionLevel, SizeType autoSeekDataSize) |
| Initializes Compressor for writing data.
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virtual bool | Close (CompressorStream *stream)=0 |
| Called just before we close the stream. All compression data will be flushed and finalized. (You can't add data afterwards).
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CompressorStream * | m_lastReadStream = nullptr |
| Cached last stream we read data into the m_dataBuffer.
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SizeType | m_lastReadStreamOffset = 0 |
| Offset of the last read (in the m_dataBuffer) in the compressed stream.
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SizeType | m_lastReadStreamSize = 0 |
| Size of the data in m_dataBuffer of the last read.
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unsigned char * | m_compressedDataBuffer = nullptr |
| Alignment for data buffer.
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unsigned int | m_compressedDataBufferSize |
| Data buffer size (stored so we can lazy allocate m_dataBuffer as we need).
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unsigned int | m_compressedDataBufferUseCount = 0 |
| Data buffer use count.
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unsigned int | m_decompressionCachePerStream |
| Cache per stream for each compressed stream stream in bytes.
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