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// Arj/Decoder1.h
#ifndef __COMPRESS_ARJ_DECODER1_H
#define __COMPRESS_ARJ_DECODER1_H
#include "../../../Common/MyCom.h"
#include "../../ICoder.h"
#include "../../Common/MSBFDecoder.h"
#include "../../Common/InBuffer.h"
#include "../LZ/LZOutWindow.h"
/*
// {23170F69-40C1-278B-0404-010000000000}
DEFINE_GUID(CLSID_CCompressArjDecoder,
0x23170F69, 0x40C1, 0x278B, 0x04, 0x04, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00);
*/
namespace NCompress {
namespace NArj {
namespace NDecoder1 {
#define CODE_BIT 16
#define THRESHOLD 3
#define DDICSIZ 26624
#define MAXDICBIT 16
#define MATCHBIT 8
#define MAXMATCH 256
#define NC (0xFF + MAXMATCH + 2 - THRESHOLD)
#define NP (MAXDICBIT + 1)
#define CBIT 9
#define NT (CODE_BIT + 3)
#define PBIT 5
#define TBIT 5
#if NT > NP
#define NPT NT
#else
#define NPT NP
#endif
#define CTABLESIZE 4096
#define PTABLESIZE 256
class CCoder :
public ICompressCoder,
public CMyUnknownImp
{
CLZOutWindow m_OutWindowStream;
NStream::NMSBF::CDecoder<CInBuffer> m_InBitStream;
UInt32 left[2 * NC - 1];
UInt32 right[2 * NC - 1];
Byte c_len[NC];
Byte pt_len[NPT];
UInt32 c_table[CTABLESIZE];
UInt32 pt_table[PTABLESIZE];
void ReleaseStreams()
{
m_OutWindowStream.ReleaseStream();
m_InBitStream.ReleaseStream();
}
class CCoderReleaser
{
CCoder *m_Coder;
public:
bool NeedFlush;
CCoderReleaser(CCoder *coder): m_Coder(coder), NeedFlush(true) {}
~CCoderReleaser()
{
if (NeedFlush)
m_Coder->m_OutWindowStream.Flush();
m_Coder->ReleaseStreams();
}
};
friend class CCoderReleaser;
void MakeTable(int nchar, Byte *bitlen, int tablebits, UInt32 *table, int tablesize);
void read_c_len();
void read_pt_len(int nn, int nbit, int i_special);
UInt32 decode_c();
UInt32 decode_p();
HRESULT CodeReal(ISequentialInStream *inStream,
ISequentialOutStream *outStream, const UInt64 *inSize, const UInt64 *outSize,
ICompressProgressInfo *progress);
public:
MY_UNKNOWN_IMP
STDMETHOD(Code)(ISequentialInStream *inStream,
ISequentialOutStream *outStream, const UInt64 *inSize, const UInt64 *outSize,
ICompressProgressInfo *progress);
};
}}}
#endif
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