1 HISTORY of the LZMA SDK 2 ----------------------- 3 4 4.65 2009-02-03 5 ------------------------- 6 - Some minor fixes 7 8 9 4.63 2008-12-31 10 ------------------------- 11 - Some minor fixes 12 13 14 4.61 beta 2008-11-23 15 ------------------------- 16 - The bug in ANSI-C LZMA Decoder was fixed: 17 If encoded stream was corrupted, decoder could access memory 18 outside of allocated range. 19 - Some changes in ANSI-C 7z Decoder interfaces. 20 - LZMA SDK is placed in the public domain. 21 22 23 4.60 beta 2008-08-19 24 ------------------------- 25 - Some minor fixes. 26 27 28 4.59 beta 2008-08-13 29 ------------------------- 30 - The bug was fixed: 31 LZMA Encoder in fast compression mode could access memory outside of 32 allocated range in some rare cases. 33 34 35 4.58 beta 2008-05-05 36 ------------------------- 37 - ANSI-C LZMA Decoder was rewritten for speed optimizations. 38 - ANSI-C LZMA Encoder was included to LZMA SDK. 39 - C++ LZMA code now is just wrapper over ANSI-C code. 40 41 42 4.57 2007-12-12 43 ------------------------- 44 - Speed optimizations in ++ LZMA Decoder. 45 - Small changes for more compatibility with some C/C++ compilers. 46 47 48 4.49 beta 2007-07-05 49 ------------------------- 50 - .7z ANSI-C Decoder: 51 - now it supports BCJ and BCJ2 filters 52 - now it supports files larger than 4 GB. 53 - now it supports "Last Write Time" field for files. 54 - C++ code for .7z archives compressing/decompressing from 7-zip 55 was included to LZMA SDK. 56 57 58 4.43 2006-06-04 59 ------------------------- 60 - Small changes for more compatibility with some C/C++ compilers. 61 62 63 4.42 2006-05-15 64 ------------------------- 65 - Small changes in .h files in ANSI-C version. 66 67 68 4.39 beta 2006-04-14 69 ------------------------- 70 - The bug in versions 4.33b:4.38b was fixed: 71 C++ version of LZMA encoder could not correctly compress 72 files larger than 2 GB with HC4 match finder (-mfhc4). 73 74 75 4.37 beta 2005-04-06 76 ------------------------- 77 - Fixes in C++ code: code could no be compiled if _NO_EXCEPTIONS was defined. 78 79 80 4.35 beta 2005-03-02 81 ------------------------- 82 - The bug was fixed in C++ version of LZMA Decoder: 83 If encoded stream was corrupted, decoder could access memory 84 outside of allocated range. 85 86 87 4.34 beta 2006-02-27 88 ------------------------- 89 - Compressing speed and memory requirements for compressing were increased 90 - LZMA now can use only these match finders: HC4, BT2, BT3, BT4 91 92 93 4.32 2005-12-09 94 ------------------------- 95 - Java version of LZMA SDK was included 96 97 98 4.30 2005-11-20 99 ------------------------- 100 - Compression ratio was improved in -a2 mode 101 - Speed optimizations for compressing in -a2 mode 102 - -fb switch now supports values up to 273 103 - The bug in 7z_C (7zIn.c) was fixed: 104 It used Alloc/Free functions from different memory pools. 105 So if program used two memory pools, it worked incorrectly. 106 - 7z_C: .7z format supporting was improved 107 - LZMA# SDK (C#.NET version) was included 108 109 110 4.27 (Updated) 2005-09-21 111 ------------------------- 112 - Some GUIDs/interfaces in C++ were changed. 113 IStream.h: 114 ISequentialInStream::Read now works as old ReadPart 115 ISequentialOutStream::Write now works as old WritePart 116 117 118 4.27 2005-08-07 119 ------------------------- 120 - The bug in LzmaDecodeSize.c was fixed: 121 if _LZMA_IN_CB and _LZMA_OUT_READ were defined, 122 decompressing worked incorrectly. 123 124 125 4.26 2005-08-05 126 ------------------------- 127 - Fixes in 7z_C code and LzmaTest.c: 128 previous versions could work incorrectly, 129 if malloc(0) returns 0 130 131 132 4.23 2005-06-29 133 ------------------------- 134 - Small fixes in C++ code 135 136 137 4.22 2005-06-10 138 ------------------------- 139 - Small fixes 140 141 142 4.21 2005-06-08 143 ------------------------- 144 - Interfaces for ANSI-C LZMA Decoder (LzmaDecode.c) were changed 145 - New additional version of ANSI-C LZMA Decoder with zlib-like interface: 146 - LzmaStateDecode.h 147 - LzmaStateDecode.c 148 - LzmaStateTest.c 149 - ANSI-C LZMA Decoder now can decompress files larger than 4 GB 150 151 152 4.17 2005-04-18 153 ------------------------- 154 - New example for RAM->RAM compressing/decompressing: 155 LZMA + BCJ (filter for x86 code): 156 - LzmaRam.h 157 - LzmaRam.cpp 158 - LzmaRamDecode.h 159 - LzmaRamDecode.c 160 - -f86 switch for lzma.exe 161 162 163 4.16 2005-03-29 164 ------------------------- 165 - The bug was fixed in LzmaDecode.c (ANSI-C LZMA Decoder): 166 If _LZMA_OUT_READ was defined, and if encoded stream was corrupted, 167 decoder could access memory outside of allocated range. 168 - Speed optimization of ANSI-C LZMA Decoder (now it's about 20% faster). 169 Old version of LZMA Decoder now is in file LzmaDecodeSize.c. 170 LzmaDecodeSize.c can provide slightly smaller code than LzmaDecode.c 171 - Small speed optimization in LZMA C++ code 172 - filter for SPARC's code was added 173 - Simplified version of .7z ANSI-C Decoder was included 174 175 176 4.06 2004-09-05 177 ------------------------- 178 - The bug in v4.05 was fixed: 179 LZMA-Encoder didn't release output stream in some cases. 180 181 182 4.05 2004-08-25 183 ------------------------- 184 - Source code of filters for x86, IA-64, ARM, ARM-Thumb 185 and PowerPC code was included to SDK 186 - Some internal minor changes 187 188 189 4.04 2004-07-28 190 ------------------------- 191 - More compatibility with some C++ compilers 192 193 194 4.03 2004-06-18 195 ------------------------- 196 - "Benchmark" command was added. It measures compressing 197 and decompressing speed and shows rating values. 198 Also it checks hardware errors. 199 200 201 4.02 2004-06-10 202 ------------------------- 203 - C++ LZMA Encoder/Decoder code now is more portable 204 and it can be compiled by GCC on Linux. 205 206 207 4.01 2004-02-15 208 ------------------------- 209 - Some detection of data corruption was enabled. 210 LzmaDecode.c / RangeDecoderReadByte 211 ..... 212 { 213 rd->ExtraBytes = 1; 214 return 0xFF; 215 } 216 217 218 4.00 2004-02-13 219 ------------------------- 220 - Original version of LZMA SDK 221 222 223 224 HISTORY of the LZMA 225 ------------------- 226 2001-2008: Improvements to LZMA compressing/decompressing code, 227 keeping compatibility with original LZMA format 228 1996-2001: Development of LZMA compression format 229 230 Some milestones: 231 232 2001-08-30: LZMA compression was added to 7-Zip 233 1999-01-02: First version of 7-Zip was released 234 235 236 End of document 237
