107 lines
2.4 KiB
C++
107 lines
2.4 KiB
C++
/***
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Copyright (C) 2021 J Reece Wilson (a/k/a "Reece"). All rights reserved.
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File: CompressionInfo.hpp
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Date: 2021-7-14
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Author: Reece
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***/
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#pragma once
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namespace Aurora::Compression
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{
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struct CompressionInfo
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{
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ECompressionType type;
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/**
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* @brief
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*
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* ZSTD: -5 <= level <= 22
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* recommended: ZSTD_CLEVEL_DEFAULT
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* LZMA: 0 <= level <= 9
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* LZ4 : N/A
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* Deflate: 0 <= x >= 9,
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* recommended: 6
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* Zip: 0 <= x >= 9,
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* recommended: 6
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* GZip: 0 <= x >= 9,
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* recommended: 6
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* BZIP: 0 <= x >= 9
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*
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*/
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AuInt8 compressionLevel {6};
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/**
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* @brief LZMA: 5 <= fb <= 273, default = 32
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*/
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AuUInt32 fbWordSize {32};
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/**
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* LZMA only
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* (1 << 12) <= dictSize <= (1 << 27) for 32-bit version
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* (1 << 12) <= dictSize <= (3 << 29) for 64-bit version
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* default = (1 << 24)
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*/
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AuUInt32 dictSize{};
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/**
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* @brief 64KiB is a recommended "small" block size
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*/
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AuUInt16 lz4BlockSize {};
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bool hasWindowbits {true};
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/**
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* @brief DEFLATE related variabl
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*
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* Deflate: 0 <= x >= 15,
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* recommended: 15
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* Zip: 0 <= x >= 15,
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* recommended: 15
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* GZip: 0 <= x >= 15,
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* recommended: 15
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*/
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AuUInt8 windowBits {15};
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/**
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* @brief Internal output buffer size.
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* Internal swap page is undefined.
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*/
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AuUInt32 internalStreamSize {4096};
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AuUInt8 threads {1};
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; };
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struct DecompressInfo
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{
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/**
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* @brief algorithm
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*/
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ECompressionType alg {ECompressionType::eDeflate};
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/**
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* @brief Internal output buffer size. Internal swap page is undefined.
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*/
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AuUInt32 internalStreamSize {4096};
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/**
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* @brief Flag for headerless decompression streams
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*/
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bool hasWindowbits {true};
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/**
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* @brief Flag for headerless decompression streams
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*/
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AuInt8 windowBits {15};
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DecompressInfo(ECompressionType alg) : alg(alg)
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{
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}
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DecompressInfo(ECompressionType alg, AuUInt32 bufferSize) : alg(alg), internalStreamSize(bufferSize)
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{
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}
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};
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} |