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// ImplodeDecoder.h
#ifndef __COMPRESS_IMPLODE_DECODER_H
#define __COMPRESS_IMPLODE_DECODER_H
#include "../../Common/MyCom.h"
#include "../ICoder.h"
#include "../Common/InBuffer.h"
#include "BitlDecoder.h"
#include "LzOutWindow.h"
namespace NCompress {
namespace NImplode {
namespace NDecoder {
typedef NBitl::CDecoder<CInBuffer> CInBit;
const unsigned kNumHuffmanBits = 16;
const unsigned kMaxHuffTableSize = 1 << 8;
class CHuffmanDecoder
{
UInt32 _limits[kNumHuffmanBits + 1];
UInt32 _poses[kNumHuffmanBits + 1];
Byte _symbols[kMaxHuffTableSize];
public:
bool Build(const Byte *lens, unsigned numSymbols) throw();
UInt32 Decode(CInBit *inStream) const throw();
};
class CCoder:
public ICompressCoder,
public ICompressSetDecoderProperties2,
public ICompressSetFinishMode,
public ICompressGetInStreamProcessedSize,
public CMyUnknownImp
{
CLzOutWindow _outWindowStream;
CInBit _inBitStream;
CHuffmanDecoder _litDecoder;
CHuffmanDecoder _lenDecoder;
CHuffmanDecoder _distDecoder;
Byte _flags;
bool _fullStreamMode;
bool BuildHuff(CHuffmanDecoder &table, unsigned numSymbols);
HRESULT CodeReal(ISequentialInStream *inStream, ISequentialOutStream *outStream,
const UInt64 *inSize, const UInt64 *outSize, ICompressProgressInfo *progress);
public:
MY_UNKNOWN_IMP3(
ICompressSetDecoderProperties2,
ICompressSetFinishMode,
ICompressGetInStreamProcessedSize)
STDMETHOD(Code)(ISequentialInStream *inStream, ISequentialOutStream *outStream,
const UInt64 *inSize, const UInt64 *outSize, ICompressProgressInfo *progress);
STDMETHOD(SetDecoderProperties2)(const Byte *data, UInt32 size);
STDMETHOD(SetFinishMode)(UInt32 finishMode);
STDMETHOD(GetInStreamProcessedSize)(UInt64 *value);
CCoder();
};
}}}
#endif
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