1/* 2 LzmaDecode.h 3 LZMA Decoder interface 4 5 LZMA SDK 4.21 Copyright (c) 1999-2005 Igor Pavlov (2005-06-08) 6 http://www.7-zip.org/ 7 8 LZMA SDK is licensed under two licenses: 9 1) GNU Lesser General Public License (GNU LGPL) 10 2) Common Public License (CPL) 11 It means that you can select one of these two licenses and 12 follow rules of that license. 13 14 SPECIAL EXCEPTION: 15 Igor Pavlov, as the author of this code, expressly permits you to 16 statically or dynamically link your code (or bind by name) to the 17 interfaces of this file without subjecting your linked code to the 18 terms of the CPL or GNU LGPL. Any modifications or additions 19 to this file, however, are subject to the LGPL or CPL terms. 20*/ 21 22#ifndef __LZMADECODE_H 23#define __LZMADECODE_H 24 25/* #define _LZMA_IN_CB */ 26/* Use callback for input data */ 27 28/* #define _LZMA_OUT_READ */ 29/* Use read function for output data */ 30 31/* #define _LZMA_PROB32 */ 32/* It can increase speed on some 32-bit CPUs, 33 but memory usage will be doubled in that case */ 34 35/* #define _LZMA_LOC_OPT */ 36/* Enable local speed optimizations inside code */ 37 38/* #define _LZMA_SYSTEM_SIZE_T */ 39/* Use system's size_t. You can use it to enable 64-bit sizes supporting*/ 40 41#ifndef UInt32 42#ifdef _LZMA_UINT32_IS_ULONG 43#define UInt32 unsigned long 44#else 45#define UInt32 unsigned int 46#endif 47#endif 48 49#ifndef SizeT 50#ifdef _LZMA_SYSTEM_SIZE_T 51#include <stddef.h> 52#define SizeT size_t 53#else 54#define SizeT UInt32 55#endif 56#endif 57 58#ifdef _LZMA_PROB32 59#define CProb UInt32 60#else 61#define CProb unsigned short 62#endif 63 64#define LZMA_RESULT_OK 0 65#define LZMA_RESULT_DATA_ERROR 1 66 67#ifdef _LZMA_IN_CB 68typedef struct _ILzmaInCallback 69{ 70 int (*Read)(void *object, const unsigned char **buffer, SizeT *bufferSize); 71} ILzmaInCallback; 72#endif 73 74#define LZMA_BASE_SIZE 1846 75#define LZMA_LIT_SIZE 768 76 77#define LZMA_PROPERTIES_SIZE 5 78 79typedef struct _CLzmaProperties 80{ 81 int lc; 82 int lp; 83 int pb; 84 #ifdef _LZMA_OUT_READ 85 UInt32 DictionarySize; 86 #endif 87}CLzmaProperties; 88 89int LzmaDecodeProperties(CLzmaProperties *propsRes, const unsigned char *propsData, int size); 90 91#define LzmaGetNumProbs(Properties) (LZMA_BASE_SIZE + (LZMA_LIT_SIZE << ((Properties)->lc + (Properties)->lp))) 92 93#define kLzmaNeedInitId (-2) 94 95typedef struct _CLzmaDecoderState 96{ 97 CLzmaProperties Properties; 98 CProb *Probs; 99 100 #ifdef _LZMA_IN_CB 101 const unsigned char *Buffer; 102 const unsigned char *BufferLim; 103 #endif 104 105 #ifdef _LZMA_OUT_READ 106 unsigned char *Dictionary; 107 UInt32 Range; 108 UInt32 Code; 109 UInt32 DictionaryPos; 110 UInt32 GlobalPos; 111 UInt32 DistanceLimit; 112 UInt32 Reps[4]; 113 int State; 114 int RemainLen; 115 unsigned char TempDictionary[4]; 116 #endif 117} CLzmaDecoderState; 118 119#ifdef _LZMA_OUT_READ 120#define LzmaDecoderInit(vs) { (vs)->RemainLen = kLzmaNeedInitId; } 121#endif 122 123int LzmaDecode(CLzmaDecoderState *vs, 124 #ifdef _LZMA_IN_CB 125 ILzmaInCallback *inCallback, 126 #else 127 const unsigned char *inStream, SizeT inSize, SizeT *inSizeProcessed, 128 #endif 129 unsigned char *outStream, SizeT outSize, SizeT *outSizeProcessed); 130 131#endif 132