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37 lines
1.6 KiB
C++
37 lines
1.6 KiB
C++
#pragma once
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#include <memory>
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#include <cstdint>
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namespace Compression
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{
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// This enumeration represents the various supported compression levels
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enum class LZ4CompressionLevel : uint8_t
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{
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Min = 3,
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Default = 9,
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OptMin = 10,
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Max = 12
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};
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// A compression codec that implements the LZ4 algo.
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class LZ4Codec
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{
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public:
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// Compress the input buffer using the LZ4 codec
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static uint64_t Compress(uint8_t* Input, uint64_t InputOffset, uint64_t InputLength, uint8_t* Output, uint64_t OutputOffset, uint64_t OutputLength);
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// Compress the input buffer using the LZ4 codec
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static std::unique_ptr<uint8_t[]> Compress(uint8_t* Input, uint64_t InputOffset, uint64_t InputLength, uint64_t& OutputLength);
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// Compress the input buffer using the LZ4 codec (High Compression)
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static uint64_t CompressHC(uint8_t* Input, uint64_t InputOffset, uint64_t InputLength, uint8_t* Output, uint64_t OutputOffset, uint64_t OutputLength, LZ4CompressionLevel Level = LZ4CompressionLevel::Max);
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// Compress the input buffer using the LZ4 codec (High Compression)
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static std::unique_ptr<uint8_t[]> CompressHC(uint8_t* Input, uint64_t InputOffset, uint64_t InputLength, uint64_t& OutputLength, LZ4CompressionLevel Level = LZ4CompressionLevel::Max);
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// Decompress the input buffer using the LZ4 codec
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static uint64_t Decompress(uint8_t* Input, uint64_t InputOffset, uint64_t InputLength, uint8_t* Output, uint64_t OutputOffset, uint64_t OutputLength);
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// Decompress the input buffer using the LZ4 codec (With known output length)
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static std::unique_ptr<uint8_t[]> Decompress(uint8_t* Input, uint64_t InputOffset, uint64_t InputLength, uint64_t KnownOutputLength);
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};
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} |