1 HISTORY of the LZMA SDK 2 ----------------------- 3 4 9.18 beta 2010-11-02 5 ------------------------- 6 - New small SFX module for installers (SfxSetup). 7 8 9 9.12 beta 2010-03-24 10 ------------------------- 11 - The BUG in LZMA SDK 9.* was fixed: LZMA2 codec didn't work, 12 if more than 10 threads were used (or more than 20 threads in some modes). 13 14 15 9.11 beta 2010-03-15 16 ------------------------- 17 - PPMd compression method support 18 19 20 9.09 2009-12-12 21 ------------------------- 22 - The bug was fixed: 23 Utf16_To_Utf8 funstions in UTFConvert.cpp and 7zMain.c 24 incorrectly converted surrogate characters (the code >= 0x10000) to UTF-8. 25 - Some bugs were fixed 26 27 28 9.06 2009-08-17 29 ------------------------- 30 - Some changes in ANSI-C 7z Decoder interfaces. 31 32 33 9.04 2009-05-30 34 ------------------------- 35 - LZMA2 compression method support 36 - xz format support 37 38 39 4.65 2009-02-03 40 ------------------------- 41 - Some minor fixes 42 43 44 4.63 2008-12-31 45 ------------------------- 46 - Some minor fixes 47 48 49 4.61 beta 2008-11-23 50 ------------------------- 51 - The bug in ANSI-C LZMA Decoder was fixed: 52 If encoded stream was corrupted, decoder could access memory 53 outside of allocated range. 54 - Some changes in ANSI-C 7z Decoder interfaces. 55 - LZMA SDK is placed in the public domain. 56 57 58 4.60 beta 2008-08-19 59 ------------------------- 60 - Some minor fixes. 61 62 63 4.59 beta 2008-08-13 64 ------------------------- 65 - The bug was fixed: 66 LZMA Encoder in fast compression mode could access memory outside of 67 allocated range in some rare cases. 68 69 70 4.58 beta 2008-05-05 71 ------------------------- 72 - ANSI-C LZMA Decoder was rewritten for speed optimizations. 73 - ANSI-C LZMA Encoder was included to LZMA SDK. 74 - C++ LZMA code now is just wrapper over ANSI-C code. 75 76 77 4.57 2007-12-12 78 ------------------------- 79 - Speed optimizations in ++ LZMA Decoder. 80 - Small changes for more compatibility with some C/C++ compilers. 81 82 83 4.49 beta 2007-07-05 84 ------------------------- 85 - .7z ANSI-C Decoder: 86 - now it supports BCJ and BCJ2 filters 87 - now it supports files larger than 4 GB. 88 - now it supports "Last Write Time" field for files. 89 - C++ code for .7z archives compressing/decompressing from 7-zip 90 was included to LZMA SDK. 91 92 93 4.43 2006-06-04 94 ------------------------- 95 - Small changes for more compatibility with some C/C++ compilers. 96 97 98 4.42 2006-05-15 99 ------------------------- 100 - Small changes in .h files in ANSI-C version. 101 102 103 4.39 beta 2006-04-14 104 ------------------------- 105 - The bug in versions 4.33b:4.38b was fixed: 106 C++ version of LZMA encoder could not correctly compress 107 files larger than 2 GB with HC4 match finder (-mfhc4). 108 109 110 4.37 beta 2005-04-06 111 ------------------------- 112 - Fixes in C++ code: code could no be compiled if _NO_EXCEPTIONS was defined. 113 114 115 4.35 beta 2005-03-02 116 ------------------------- 117 - The bug was fixed in C++ version of LZMA Decoder: 118 If encoded stream was corrupted, decoder could access memory 119 outside of allocated range. 120 121 122 4.34 beta 2006-02-27 123 ------------------------- 124 - Compressing speed and memory requirements for compressing were increased 125 - LZMA now can use only these match finders: HC4, BT2, BT3, BT4 126 127 128 4.32 2005-12-09 129 ------------------------- 130 - Java version of LZMA SDK was included 131 132 133 4.30 2005-11-20 134 ------------------------- 135 - Compression ratio was improved in -a2 mode 136 - Speed optimizations for compressing in -a2 mode 137 - -fb switch now supports values up to 273 138 - The bug in 7z_C (7zIn.c) was fixed: 139 It used Alloc/Free functions from different memory pools. 140 So if program used two memory pools, it worked incorrectly. 141 - 7z_C: .7z format supporting was improved 142 - LZMA# SDK (C#.NET version) was included 143 144 145 4.27 (Updated) 2005-09-21 146 ------------------------- 147 - Some GUIDs/interfaces in C++ were changed. 148 IStream.h: 149 ISequentialInStream::Read now works as old ReadPart 150 ISequentialOutStream::Write now works as old WritePart 151 152 153 4.27 2005-08-07 154 ------------------------- 155 - The bug in LzmaDecodeSize.c was fixed: 156 if _LZMA_IN_CB and _LZMA_OUT_READ were defined, 157 decompressing worked incorrectly. 158 159 160 4.26 2005-08-05 161 ------------------------- 162 - Fixes in 7z_C code and LzmaTest.c: 163 previous versions could work incorrectly, 164 if malloc(0) returns 0 165 166 167 4.23 2005-06-29 168 ------------------------- 169 - Small fixes in C++ code 170 171 172 4.22 2005-06-10 173 ------------------------- 174 - Small fixes 175 176 177 4.21 2005-06-08 178 ------------------------- 179 - Interfaces for ANSI-C LZMA Decoder (LzmaDecode.c) were changed 180 - New additional version of ANSI-C LZMA Decoder with zlib-like interface: 181 - LzmaStateDecode.h 182 - LzmaStateDecode.c 183 - LzmaStateTest.c 184 - ANSI-C LZMA Decoder now can decompress files larger than 4 GB 185 186 187 4.17 2005-04-18 188 ------------------------- 189 - New example for RAM->RAM compressing/decompressing: 190 LZMA + BCJ (filter for x86 code): 191 - LzmaRam.h 192 - LzmaRam.cpp 193 - LzmaRamDecode.h 194 - LzmaRamDecode.c 195 - -f86 switch for lzma.exe 196 197 198 4.16 2005-03-29 199 ------------------------- 200 - The bug was fixed in LzmaDecode.c (ANSI-C LZMA Decoder): 201 If _LZMA_OUT_READ was defined, and if encoded stream was corrupted, 202 decoder could access memory outside of allocated range. 203 - Speed optimization of ANSI-C LZMA Decoder (now it's about 20% faster). 204 Old version of LZMA Decoder now is in file LzmaDecodeSize.c. 205 LzmaDecodeSize.c can provide slightly smaller code than LzmaDecode.c 206 - Small speed optimization in LZMA C++ code 207 - filter for SPARC's code was added 208 - Simplified version of .7z ANSI-C Decoder was included 209 210 211 4.06 2004-09-05 212 ------------------------- 213 - The bug in v4.05 was fixed: 214 LZMA-Encoder didn't release output stream in some cases. 215 216 217 4.05 2004-08-25 218 ------------------------- 219 - Source code of filters for x86, IA-64, ARM, ARM-Thumb 220 and PowerPC code was included to SDK 221 - Some internal minor changes 222 223 224 4.04 2004-07-28 225 ------------------------- 226 - More compatibility with some C++ compilers 227 228 229 4.03 2004-06-18 230 ------------------------- 231 - "Benchmark" command was added. It measures compressing 232 and decompressing speed and shows rating values. 233 Also it checks hardware errors. 234 235 236 4.02 2004-06-10 237 ------------------------- 238 - C++ LZMA Encoder/Decoder code now is more portable 239 and it can be compiled by GCC on Linux. 240 241 242 4.01 2004-02-15 243 ------------------------- 244 - Some detection of data corruption was enabled. 245 LzmaDecode.c / RangeDecoderReadByte 246 ..... 247 { 248 rd->ExtraBytes = 1; 249 return 0xFF; 250 } 251 252 253 4.00 2004-02-13 254 ------------------------- 255 - Original version of LZMA SDK 256 257 258 259 HISTORY of the LZMA 260 ------------------- 261 2001-2008: Improvements to LZMA compressing/decompressing code, 262 keeping compatibility with original LZMA format 263 1996-2001: Development of LZMA compression format 264 265 Some milestones: 266 267 2001-08-30: LZMA compression was added to 7-Zip 268 1999-01-02: First version of 7-Zip was released 269 270 271 End of document 272
