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Diffstat (limited to 'CPP/7zip/Compress/Rar1Decoder.h')
-rwxr-xr-x | CPP/7zip/Compress/Rar1Decoder.h | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/CPP/7zip/Compress/Rar1Decoder.h b/CPP/7zip/Compress/Rar1Decoder.h new file mode 100755 index 00000000..f7c08b38 --- /dev/null +++ b/CPP/7zip/Compress/Rar1Decoder.h @@ -0,0 +1,88 @@ +// Rar1Decoder.h +// According to unRAR license, this code may not be used to develop +// a program that creates RAR archives + +#ifndef __COMPRESS_RAR1_DECODER_H +#define __COMPRESS_RAR1_DECODER_H + +#include "../../Common/MyCom.h" + +#include "../ICoder.h" + +#include "../Common/InBuffer.h" + +#include "BitmDecoder.h" +#include "HuffmanDecoder.h" +#include "LzOutWindow.h" + +namespace NCompress { +namespace NRar1 { + +const UInt32 kNumRepDists = 4; + +typedef NBitm::CDecoder<CInBuffer> CBitDecoder; + +class CDecoder : + public ICompressCoder, + public ICompressSetDecoderProperties2, + public CMyUnknownImp +{ +public: + CLzOutWindow m_OutWindowStream; + CBitDecoder m_InBitStream; + + UInt32 m_RepDists[kNumRepDists]; + UInt32 m_RepDistPtr; + + UInt32 LastDist; + UInt32 LastLength; + + Int64 m_UnpackSize; + bool m_IsSolid; + + UInt32 ReadBits(int numBits); + HRESULT CopyBlock(UInt32 distance, UInt32 len); + + UInt32 DecodeNum(const UInt32 *posTab); + HRESULT ShortLZ(); + HRESULT LongLZ(); + HRESULT HuffDecode(); + void GetFlagsBuf(); + void InitData(); + void InitHuff(); + void CorrHuff(UInt32 *CharSet, UInt32 *NumToPlace); + void OldUnpWriteBuf(); + + UInt32 ChSet[256],ChSetA[256],ChSetB[256],ChSetC[256]; + UInt32 Place[256],PlaceA[256],PlaceB[256],PlaceC[256]; + UInt32 NToPl[256],NToPlB[256],NToPlC[256]; + UInt32 FlagBuf,AvrPlc,AvrPlcB,AvrLn1,AvrLn2,AvrLn3; + int Buf60,NumHuf,StMode,LCount,FlagsCnt; + UInt32 Nhfb,Nlzb,MaxDist3; + + void InitStructures(); + + HRESULT CodeReal(ISequentialInStream *inStream, ISequentialOutStream *outStream, + const UInt64 *inSize, const UInt64 *outSize, ICompressProgressInfo *progress); + +public: + CDecoder(); + + MY_UNKNOWN_IMP1(ICompressSetDecoderProperties2) + + void ReleaseStreams() + { + m_OutWindowStream.ReleaseStream(); + m_InBitStream.ReleaseStream(); + } + + STDMETHOD(Code)(ISequentialInStream *inStream, ISequentialOutStream *outStream, + const UInt64 *inSize, const UInt64 *outSize, ICompressProgressInfo *progress); + + STDMETHOD(SetDecoderProperties2)(const Byte *data, UInt32 size); + +}; + +}} + +#endif |