1HISTORY of the LZMA SDK 2----------------------- 3 44.65 2009-02-03 5------------------------- 6- Some minor fixes 7 8 94.63 2008-12-31 10------------------------- 11- Some minor fixes 12 13 144.61 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 22 234.60 beta 2008-08-19 24------------------------- 25- Some minor fixes. 26 27 284.59 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 34 354.58 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 41 424.57 2007-12-12 43------------------------- 44- Speed optimizations in Ñ++ LZMA Decoder. 45- Small changes for more compatibility with some C/C++ compilers. 46 47 484.49 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 57 584.43 2006-06-04 59------------------------- 60- Small changes for more compatibility with some C/C++ compilers. 61 62 634.42 2006-05-15 64------------------------- 65- Small changes in .h files in ANSI-C version. 66 67 684.39 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 74 754.37 beta 2005-04-06 76------------------------- 77- Fixes in C++ code: code could no be compiled if _NO_EXCEPTIONS was defined. 78 79 804.35 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 86 874.34 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 92 934.32 2005-12-09 94------------------------- 95- Java version of LZMA SDK was included 96 97 984.30 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 1104.27 (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 1184.27 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 1254.26 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 1324.23 2005-06-29 133------------------------- 134- Small fixes in C++ code 135 136 1374.22 2005-06-10 138------------------------- 139- Small fixes 140 141 1424.21 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 1524.17 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 1634.16 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 1764.06 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 1824.05 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 1894.04 2004-07-28 190------------------------- 191- More compatibility with some C++ compilers 192 193 1944.03 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 2014.02 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 2074.01 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 2184.00 2004-02-13 219------------------------- 220- Original version of LZMA SDK 221 222 223 224HISTORY 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 236End of document 237