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// Rar20Decoder.h
// According to unRAR license,
// this code may not be used to develop a
// RAR (WinRAR) compatible archiver
#ifndef __RAR20_DECODER_H
#define __RAR20_DECODER_H
#include "../../../Common/MyCom.h"
#include "../../ICoder.h"
#include "../../Common/MSBFDecoder.h"
#include "../../Common/InBuffer.h"
#include "../LZ/LZOutWindow.h"
#include "../Huffman/HuffmanDecoder.h"
#include "Rar20Multimedia.h"
#include "Rar20Const.h"
namespace NCompress {
namespace NRar20 {
typedef NStream::NMSBF::CDecoder<CInBuffer> CBitDecoder;
const int kNumHuffmanBits = 15;
class CDecoder :
public ICompressCoder,
public ICompressSetDecoderProperties2,
public CMyUnknownImp
{
CLZOutWindow m_OutWindowStream;
CBitDecoder m_InBitStream;
NHuffman::CDecoder<kNumHuffmanBits, kMainTableSize> m_MainDecoder;
NHuffman::CDecoder<kNumHuffmanBits, kDistTableSize> m_DistDecoder;
NHuffman::CDecoder<kNumHuffmanBits, kLenTableSize> m_LenDecoder;
NHuffman::CDecoder<kNumHuffmanBits, kMMTableSize> m_MMDecoders[NMultimedia::kNumChanelsMax];
NHuffman::CDecoder<kNumHuffmanBits, kLevelTableSize> m_LevelDecoder;
bool m_AudioMode;
NMultimedia::CPredictor m_Predictor;
int m_NumChannels;
UInt32 m_RepDists[kNumRepDists];
UInt32 m_RepDistPtr;
UInt32 m_LastLength;
Byte m_LastLevels[kMaxTableSize];
UInt64 m_PackSize;
bool m_IsSolid;
void InitStructures();
bool ReadTables();
bool ReadLastTables();
public:
CDecoder();
MY_UNKNOWN_IMP1(ICompressSetDecoderProperties2)
void ReleaseStreams()
{
m_OutWindowStream.ReleaseStream();
m_InBitStream.ReleaseStream();
}
STDMETHOD(CodeReal)(ISequentialInStream *inStream,
ISequentialOutStream *outStream, const UInt64 *inSize, const UInt64 *outSize,
ICompressProgressInfo *progress);
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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