135 lines
3.0 KiB
C++
135 lines
3.0 KiB
C++
/***
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Copyright (C) 2021 J Reece Wilson (a/k/a "Reece"). All rights reserved.
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File: CompressInfo.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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using CompressionOptions_t = AuList<AuPair<int, int>>;
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struct CompressInfo
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{
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AU_COPY_MOVE_DEF(CompressInfo);
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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 uCompressionLevel { 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 uFbWordSize { 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 uDictSize { };
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/**
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* @brief 64KiB is a recommended "small" block size
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* todo: lzma respects this
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*/
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AuUInt16 uLz4BlockSize {};
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bool bHasWindowbits {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 uWindowBits {15};
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/**
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* @brief Internal output buffer size.
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*/
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AuUInt32 uInternalStreamSize { 512 * 1024 };
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AuUInt8 uThreads { 1 };
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bool bLZ4AutoFlush {false};
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CompressionOptions_t options;
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bool bErrorCheck { true };
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inline CompressInfo(ECompressionType alg) : type(alg)
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{
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}
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inline CompressInfo(ECompressionType alg, AuUInt32 bufferSize) : type(alg), uInternalStreamSize(bufferSize)
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{
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}
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};
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struct DecompressInfo
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{
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AU_COPY_MOVE(DecompressInfo);
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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.
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*/
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AuUInt32 uInternalStreamSize { 512 * 1024 };
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/**
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* @brief Flag for headerless decompression streams
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*/
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bool bHasWindowbits { true };
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/**
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* @brief Flag for headerless decompression streams
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*/
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AuInt8 uWindowBits { 15 };
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AuUInt8 uThreads { 1 };
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CompressionOptions_t options;
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bool bErrorCheck { true };
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inline DecompressInfo(ECompressionType alg) : alg(alg)
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{
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}
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inline DecompressInfo(ECompressionType alg, AuUInt32 bufferSize) : alg(alg), uInternalStreamSize(bufferSize)
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{
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}
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};
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} |