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137 lines
3.0 KiB
C++
Executable File
137 lines
3.0 KiB
C++
Executable File
// DeflateDecoder.h
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#ifndef __DEFLATE_DECODER_H
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#define __DEFLATE_DECODER_H
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#include "../../Common/MyCom.h"
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#include "../ICoder.h"
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#include "../Common/InBuffer.h"
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#include "BitlDecoder.h"
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#include "DeflateConst.h"
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#include "HuffmanDecoder.h"
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#include "LzOutWindow.h"
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namespace NCompress {
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namespace NDeflate {
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namespace NDecoder {
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class CCoder:
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public ICompressCoder,
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public ICompressGetInStreamProcessedSize,
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#ifndef NO_READ_FROM_CODER
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public ICompressSetInStream,
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public ICompressSetOutStreamSize,
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public ISequentialInStream,
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#endif
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public CMyUnknownImp
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{
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CLzOutWindow m_OutWindowStream;
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NBitl::CDecoder<CInBuffer> m_InBitStream;
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NCompress::NHuffman::CDecoder<kNumHuffmanBits, kFixedMainTableSize> m_MainDecoder;
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NCompress::NHuffman::CDecoder<kNumHuffmanBits, kFixedDistTableSize> m_DistDecoder;
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NCompress::NHuffman::CDecoder<kNumHuffmanBits, kLevelTableSize> m_LevelDecoder;
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UInt32 m_StoredBlockSize;
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bool m_FinalBlock;
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bool m_StoredMode;
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UInt32 _numDistLevels;
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bool _deflateNSIS;
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bool _deflate64Mode;
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bool _keepHistory;
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Int32 _remainLen;
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UInt32 _rep0;
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bool _needReadTable;
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UInt32 ReadBits(int numBits);
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bool DeCodeLevelTable(Byte *values, int numSymbols);
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bool ReadTables();
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void ReleaseStreams()
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{
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m_OutWindowStream.ReleaseStream();
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ReleaseInStream();
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}
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HRESULT Flush() { return m_OutWindowStream.Flush(); }
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class CCoderReleaser
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{
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CCoder *m_Coder;
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public:
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bool NeedFlush;
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CCoderReleaser(CCoder *coder): m_Coder(coder), NeedFlush(true) {}
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~CCoderReleaser()
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{
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if (NeedFlush)
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m_Coder->Flush();
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m_Coder->ReleaseStreams();
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}
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};
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friend class CCoderReleaser;
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HRESULT CodeSpec(UInt32 curSize);
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public:
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bool ZlibMode;
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Byte ZlibFooter[4];
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CCoder(bool deflate64Mode, bool deflateNSIS = false);
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void SetKeepHistory(bool keepHistory) { _keepHistory = keepHistory; }
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HRESULT CodeReal(ISequentialInStream *inStream, ISequentialOutStream *outStream,
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const UInt64 *inSize, const UInt64 *outSize, ICompressProgressInfo *progress);
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#ifndef NO_READ_FROM_CODER
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MY_UNKNOWN_IMP4(
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ICompressGetInStreamProcessedSize,
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ICompressSetInStream,
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ICompressSetOutStreamSize,
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ISequentialInStream
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)
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#else
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MY_UNKNOWN_IMP1(
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ICompressGetInStreamProcessedSize)
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#endif
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STDMETHOD(Code)(ISequentialInStream *inStream, ISequentialOutStream *outStream,
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const UInt64 *inSize, const UInt64 *outSize, ICompressProgressInfo *progress);
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STDMETHOD(SetInStream)(ISequentialInStream *inStream);
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STDMETHOD(ReleaseInStream)();
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STDMETHOD(SetOutStreamSize)(const UInt64 *outSize);
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#ifndef NO_READ_FROM_CODER
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STDMETHOD(Read)(void *data, UInt32 size, UInt32 *processedSize);
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#endif
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// IGetInStreamProcessedSize
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STDMETHOD(GetInStreamProcessedSize)(UInt64 *value);
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};
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class CCOMCoder : public CCoder
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{
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public:
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CCOMCoder(): CCoder(false) {}
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};
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class CNsisCOMCoder : public CCoder
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{
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public:
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CNsisCOMCoder(): CCoder(false, true) {}
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};
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class CCOMCoder64 : public CCoder
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{
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public:
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CCOMCoder64(): CCoder(true) {}
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};
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}}}
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#endif
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