Simone
d074cc7c07
Plugin: ns7zip v2.0.0 Architectures: x86-ansi, x86-unicode, amd64-unicode License: LGPL-2.1-or-later
133 lines
3.1 KiB
C++
133 lines
3.1 KiB
C++
// Rar5Decoder.h
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// According to unRAR license, this code may not be used to develop
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// a program that creates RAR archives
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#ifndef ZIP7_INC_COMPRESS_RAR5_DECODER_H
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#define ZIP7_INC_COMPRESS_RAR5_DECODER_H
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#include "../../Common/MyBuffer2.h"
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#include "../../Common/MyCom.h"
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#include "../ICoder.h"
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#include "HuffmanDecoder.h"
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namespace NCompress {
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namespace NRar5 {
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class CBitDecoder;
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struct CFilter
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{
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Byte Type;
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Byte Channels;
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UInt32 Size;
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UInt64 Start;
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};
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const unsigned kNumReps = 4;
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const unsigned kLenTableSize = 11 * 4;
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const unsigned kMainTableSize = 256 + 1 + 1 + kNumReps + kLenTableSize;
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const unsigned kExtraDistSymbols_v7 = 16;
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const unsigned kDistTableSize_v6 = 64;
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const unsigned kDistTableSize_MAX = 64 + kExtraDistSymbols_v7;
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const unsigned kNumAlignBits = 4;
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const unsigned kAlignTableSize = 1 << kNumAlignBits;
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const unsigned kNumHufBits = 15;
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const unsigned k_NumHufTableBits_Main = 10;
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const unsigned k_NumHufTableBits_Dist = 7;
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const unsigned k_NumHufTableBits_Len = 7;
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const unsigned k_NumHufTableBits_Align = 6;
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const unsigned DICT_SIZE_BITS_MAX = 40;
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Z7_CLASS_IMP_NOQIB_2(
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CDecoder
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, ICompressCoder
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, ICompressSetDecoderProperties2
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)
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bool _useAlignBits;
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bool _isLastBlock;
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bool _unpackSize_Defined;
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// bool _packSize_Defined;
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bool _unsupportedFilter;
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Byte _lzError;
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bool _writeError;
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bool _isSolid;
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// bool _solidAllowed;
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bool _is_v7;
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bool _tableWasFilled;
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bool _wasInit;
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Byte _exitType;
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// Byte _dictSizeLog;
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size_t _dictSize;
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Byte *_window;
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size_t _winPos;
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size_t _winSize;
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size_t _dictSize_forCheck;
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size_t _limit;
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const Byte *_buf_Res;
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UInt64 _lzSize;
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size_t _reps[kNumReps];
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unsigned _bitPos_Res;
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UInt32 _lastLen;
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// unsigned _numCorrectDistSymbols;
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unsigned _numUnusedFilters;
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unsigned _numFilters;
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UInt64 _lzWritten;
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UInt64 _lzFileStart;
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UInt64 _unpackSize;
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// UInt64 _packSize;
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UInt64 _lzEnd;
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UInt64 _writtenFileSize;
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UInt64 _filterEnd;
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UInt64 _progress_Pack;
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UInt64 _progress_Unpack;
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CAlignedBuffer _filterSrc;
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CAlignedBuffer _filterDst;
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CFilter *_filters;
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size_t _winSize_Allocated;
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ISequentialInStream *_inStream;
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ISequentialOutStream *_outStream;
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ICompressProgressInfo *_progress;
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Byte *_inputBuf;
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NHuffman::CDecoder<kNumHufBits, kMainTableSize, k_NumHufTableBits_Main> m_MainDecoder;
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NHuffman::CDecoder256<kNumHufBits, kDistTableSize_MAX, k_NumHufTableBits_Dist> m_DistDecoder;
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NHuffman::CDecoder256<kNumHufBits, kAlignTableSize, k_NumHufTableBits_Align> m_AlignDecoder;
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NHuffman::CDecoder256<kNumHufBits, kLenTableSize, k_NumHufTableBits_Len> m_LenDecoder;
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Byte m_LenPlusTable[DICT_SIZE_BITS_MAX];
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void InitFilters()
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{
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_numUnusedFilters = 0;
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_numFilters = 0;
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}
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void DeleteUnusedFilters();
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HRESULT WriteData(const Byte *data, size_t size);
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HRESULT ExecuteFilter(const CFilter &f);
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HRESULT WriteBuf();
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HRESULT AddFilter(CBitDecoder &_bitStream);
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HRESULT ReadTables(CBitDecoder &_bitStream);
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HRESULT DecodeLZ2(const CBitDecoder &_bitStream) throw();
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HRESULT DecodeLZ();
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HRESULT CodeReal();
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public:
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CDecoder();
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~CDecoder();
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};
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}}
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#endif
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