97 lines
2.7 KiB
C
97 lines
2.7 KiB
C
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/*
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LzmaStateDecode.h
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LZMA Decoder interface (State version)
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LZMA SDK 4.40 Copyright (c) 1999-2006 Igor Pavlov (2006-05-01)
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http://www.7-zip.org/
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LZMA SDK is licensed under two licenses:
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1) GNU Lesser General Public License (GNU LGPL)
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2) Common Public License (CPL)
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It means that you can select one of these two licenses and
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follow rules of that license.
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SPECIAL EXCEPTION:
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Igor Pavlov, as the author of this code, expressly permits you to
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statically or dynamically link your code (or bind by name) to the
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interfaces of this file without subjecting your linked code to the
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terms of the CPL or GNU LGPL. Any modifications or additions
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to this file, however, are subject to the LGPL or CPL terms.
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*/
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#ifndef __LZMASTATEDECODE_H
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#define __LZMASTATEDECODE_H
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#include "LzmaTypes.h"
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/* #define _LZMA_PROB32 */
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/* It can increase speed on some 32-bit CPUs,
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but memory usage will be doubled in that case */
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#ifdef _LZMA_PROB32
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#define CProb UInt32
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#else
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#define CProb UInt16
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#endif
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#define LZMA_RESULT_OK 0
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#define LZMA_RESULT_DATA_ERROR 1
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#define LZMA_BASE_SIZE 1846
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#define LZMA_LIT_SIZE 768
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#define LZMA_PROPERTIES_SIZE 5
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typedef struct _CLzmaProperties
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{
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int lc;
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int lp;
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int pb;
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UInt32 DictionarySize;
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}CLzmaProperties;
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int LzmaDecodeProperties(CLzmaProperties *propsRes, const unsigned char *propsData, int size);
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#define LzmaGetNumProbs(lzmaProps) (LZMA_BASE_SIZE + (LZMA_LIT_SIZE << ((lzmaProps)->lc + (lzmaProps)->lp)))
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#define kLzmaInBufferSize 64 /* don't change it. it must be larger than kRequiredInBufferSize */
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#define kLzmaNeedInitId (-2)
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typedef struct _CLzmaDecoderState
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{
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CLzmaProperties Properties;
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CProb *Probs;
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unsigned char *Dictionary;
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unsigned char Buffer[kLzmaInBufferSize];
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int BufferSize;
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UInt32 Range;
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UInt32 Code;
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UInt32 DictionaryPos;
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UInt32 GlobalPos;
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UInt32 DistanceLimit;
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UInt32 Reps[4];
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int State;
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int RemainLen; /* -2: decoder needs internal initialization
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-1: stream was finished,
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0: ok
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> 0: need to write RemainLen bytes as match Reps[0],
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*/
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unsigned char TempDictionary[4]; /* it's required when DictionarySize = 0 */
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} CLzmaDecoderState;
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#define LzmaDecoderInit(vs) { (vs)->RemainLen = kLzmaNeedInitId; (vs)->BufferSize = 0; }
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/* LzmaDecode: decoding from input stream to output stream.
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If finishDecoding != 0, then there are no more bytes in input stream
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after inStream[inSize - 1]. */
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int LzmaDecode(CLzmaDecoderState *vs,
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const unsigned char *inStream, SizeT inSize, SizeT *inSizeProcessed,
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unsigned char *outStream, SizeT outSize, SizeT *outSizeProcessed,
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int finishDecoding);
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#endif
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