1HISTORY of the LZMA SDK 2----------------------- 3 49.18 beta 2010-11-02 5------------------------- 6- New small SFX module for installers (SfxSetup). 7 8 99.12 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 14 159.11 beta 2010-03-15 16------------------------- 17- PPMd compression method support 18 19 209.09 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 27 289.06 2009-08-17 29------------------------- 30- Some changes in ANSI-C 7z Decoder interfaces. 31 32 339.04 2009-05-30 34------------------------- 35- LZMA2 compression method support 36- xz format support 37 38 394.65 2009-02-03 40------------------------- 41- Some minor fixes 42 43 444.63 2008-12-31 45------------------------- 46- Some minor fixes 47 48 494.61 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 57 584.60 beta 2008-08-19 59------------------------- 60- Some minor fixes. 61 62 634.59 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 69 704.58 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 76 774.57 2007-12-12 78------------------------- 79- Speed optimizations in Ñ++ LZMA Decoder. 80- Small changes for more compatibility with some C/C++ compilers. 81 82 834.49 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 92 934.43 2006-06-04 94------------------------- 95- Small changes for more compatibility with some C/C++ compilers. 96 97 984.42 2006-05-15 99------------------------- 100- Small changes in .h files in ANSI-C version. 101 102 1034.39 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 1104.37 beta 2005-04-06 111------------------------- 112- Fixes in C++ code: code could no be compiled if _NO_EXCEPTIONS was defined. 113 114 1154.35 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 1224.34 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 1284.32 2005-12-09 129------------------------- 130- Java version of LZMA SDK was included 131 132 1334.30 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 1454.27 (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 1534.27 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 1604.26 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 1674.23 2005-06-29 168------------------------- 169- Small fixes in C++ code 170 171 1724.22 2005-06-10 173------------------------- 174- Small fixes 175 176 1774.21 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 1874.17 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 1984.16 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 2114.06 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 2174.05 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 2244.04 2004-07-28 225------------------------- 226- More compatibility with some C++ compilers 227 228 2294.03 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 2364.02 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 2424.01 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 2534.00 2004-02-13 254------------------------- 255- Original version of LZMA SDK 256 257 258 259HISTORY 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 271End of document 272