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99 lines
2.0 KiB
C++
Executable File
99 lines
2.0 KiB
C++
Executable File
// ArjDecoder1.h
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#ifndef __COMPRESS_ARJ_DECODER1_H
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#define __COMPRESS_ARJ_DECODER1_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 "BitmDecoder.h"
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#include "LzOutWindow.h"
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namespace NCompress {
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namespace NArj {
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namespace NDecoder1 {
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#define CODE_BIT 16
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#define THRESHOLD 3
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#define DDICSIZ 26624
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#define MAXDICBIT 16
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#define MATCHBIT 8
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#define MAXMATCH 256
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#define NC (0xFF + MAXMATCH + 2 - THRESHOLD)
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#define NP (MAXDICBIT + 1)
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#define CBIT 9
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#define NT (CODE_BIT + 3)
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#define PBIT 5
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#define TBIT 5
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#if NT > NP
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#define NPT NT
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#else
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#define NPT NP
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#endif
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#define CTABLESIZE 4096
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#define PTABLESIZE 256
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class CCoder :
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public ICompressCoder,
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public CMyUnknownImp
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{
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CLzOutWindow m_OutWindowStream;
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NBitm::CDecoder<CInBuffer> m_InBitStream;
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UInt32 left[2 * NC - 1];
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UInt32 right[2 * NC - 1];
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Byte c_len[NC];
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Byte pt_len[NPT];
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UInt32 c_table[CTABLESIZE];
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UInt32 pt_table[PTABLESIZE];
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void ReleaseStreams()
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{
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m_OutWindowStream.ReleaseStream();
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m_InBitStream.ReleaseStream();
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}
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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->m_OutWindowStream.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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void MakeTable(int nchar, Byte *bitlen, int tablebits, UInt32 *table, int tablesize);
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void read_c_len();
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void read_pt_len(int nn, int nbit, int i_special);
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UInt32 decode_c();
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UInt32 decode_p();
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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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public:
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MY_UNKNOWN_IMP
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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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};
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}}}
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#endif
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