Simone
d074cc7c07
Plugin: ns7zip v2.0.0 Architectures: x86-ansi, x86-unicode, amd64-unicode License: LGPL-2.1-or-later
69 lines
1.6 KiB
C++
69 lines
1.6 KiB
C++
// LzhDecoder.h
|
|
|
|
#ifndef ZIP7_INC_COMPRESS_LZH_DECODER_H
|
|
#define ZIP7_INC_COMPRESS_LZH_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 NLzh {
|
|
namespace NDecoder {
|
|
|
|
const unsigned kMatchMinLen = 3;
|
|
const unsigned kMatchMaxLen = 256;
|
|
const unsigned NC = 256 + kMatchMaxLen - kMatchMinLen + 1;
|
|
const unsigned NUM_CODE_BITS = 16;
|
|
const unsigned NUM_DIC_BITS_MAX = 25;
|
|
const unsigned NT = NUM_CODE_BITS + 3;
|
|
const unsigned NP = NUM_DIC_BITS_MAX + 1;
|
|
const unsigned NPT = NP; // Max(NT, NP)
|
|
|
|
class CCoder
|
|
{
|
|
CLzOutWindow _outWindow;
|
|
NBitm::CDecoder<CInBuffer> _inBitStream;
|
|
|
|
int _symbolT;
|
|
int _symbolC;
|
|
UInt32 DictSize;
|
|
// bool FinishMode;
|
|
|
|
NHuffman::CDecoder256<NUM_CODE_BITS, NPT, 7> _decoderT;
|
|
NHuffman::CDecoder<NUM_CODE_BITS, NC, 10> _decoderC;
|
|
|
|
class CCoderReleaser
|
|
{
|
|
CCoder *_coder;
|
|
public:
|
|
CCoderReleaser(CCoder *coder): _coder(coder) {}
|
|
void Disable() { _coder = NULL; }
|
|
~CCoderReleaser() { if (_coder) _coder->_outWindow.Flush(); }
|
|
};
|
|
friend class CCoderReleaser;
|
|
|
|
bool ReadTP(unsigned num, unsigned numBits, int spec);
|
|
bool ReadC();
|
|
|
|
HRESULT CodeReal(UInt32 outSize, ICompressProgressInfo *progress);
|
|
public:
|
|
CCoder(): DictSize(1 << 16)
|
|
// , FinishMode(true)
|
|
{}
|
|
void SetDictSize(UInt32 dictSize) { DictSize = dictSize; }
|
|
UInt64 GetInputProcessedSize() const { return _inBitStream.GetProcessedSize(); }
|
|
HRESULT Code(ISequentialInStream *inStream, ISequentialOutStream *outStream,
|
|
UInt32 outSize, ICompressProgressInfo *progress);
|
|
};
|
|
|
|
}}}
|
|
|
|
#endif
|