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// 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;
class CDecoder :
public ICompressCoder,
public ICompressSetDecoderProperties2,
public CMyUnknownImp
{
CLzOutWindow m_OutWindowStream;
NBitm::CDecoder<CInBuffer> m_InBitStream;
UInt64 m_UnpackSize;
UInt32 LastDist;
UInt32 LastLength;
UInt32 m_RepDistPtr;
UInt32 m_RepDists[kNumRepDists];
bool _isSolid;
bool _solidAllowed;
bool StMode;
int FlagsCnt;
UInt32 FlagBuf, AvrPlc, AvrPlcB, AvrLn1, AvrLn2, AvrLn3;
unsigned Buf60, NumHuf, LCount;
UInt32 Nhfb, Nlzb, MaxDist3;
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 ReadBits(unsigned numBits);
HRESULT CopyBlock(UInt32 distance, UInt32 len);
UInt32 DecodeNum(const Byte *numTab);
HRESULT ShortLZ();
HRESULT LongLZ();
HRESULT HuffDecode();
void GetFlagsBuf();
void CorrHuff(UInt32 *CharSet, UInt32 *NumToPlace);
void OldUnpWriteBuf();
HRESULT CodeReal(ISequentialInStream *inStream, ISequentialOutStream *outStream,
const UInt64 *inSize, const UInt64 *outSize, ICompressProgressInfo *progress);
public:
CDecoder();
MY_UNKNOWN_IMP1(ICompressSetDecoderProperties2)
STDMETHOD(Code)(ISequentialInStream *inStream, ISequentialOutStream *outStream,
const UInt64 *inSize, const UInt64 *outSize, ICompressProgressInfo *progress);
STDMETHOD(SetDecoderProperties2)(const Byte *data, UInt32 size);
};
}}
#endif
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