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