git subrepo pull (merge) --force deps/libchdr

[pcsx_rearmed.git] / deps / libchdr / deps / lzma-22.01 / lzma-history.txt

HISTORY of the LZMA SDK\r
-----------------------\r
\r
21.07          2021-12-26\r
-------------------------\r
- New switches: -spm and -im!{file_path} to exclude directories from processing \r
    for specified paths that don't contain path separator character at the end of path.\r
- The sorting order of files in archives was slightly changed to be more consistent\r
  for cases where the name of some directory is the same as the prefix part of the name\r
  of another directory or file.\r
\r
\r
21.06          2021-11-24\r
-------------------------\r
- Bug in LZMA encoder in file LzmaEnc.c was fixed:\r
  LzmaEnc_MemEncode(), LzmaEncode() and LzmaCompress() could work incorrectly, \r
    if size value for output buffer is smaller than size required for all compressed data.\r
  LzmaEnc_Encode() could work incorrectly,\r
    if callback ISeqOutStream::Write() doesn't write all compressed data.\r
  NCompress::NLzma::CEncoder::Code() could work incorrectly,\r
    if callback ISequentialOutStream::Write() returns error code.\r
- Bug in versions 21.00-21.05 was fixed:\r
  7-Zip didn't set attributes of directories during archive extracting.\r
\r
\r
21.04 beta     2021-11-02\r
-------------------------\r
- 7-Zip now reduces the number of working CPU threads for compression,\r
  if RAM size is not enough for compression with big LZMA2 dictionary.\r
- 7-Zip now can create and check "file.sha256" text files that contain the list \r
  of file names and SHA-256 checksums in format compatible with sha256sum program.\r
\r
\r
21.03 beta     2021-07-20\r
-------------------------\r
- The maximum dictionary size for LZMA/LZMA2 compressing was increased to 4 GB (3840 MiB).\r
- Minor speed optimizations in LZMA/LZMA2 compressing.\r
\r
\r
21.02 alpha    2021-05-06\r
-------------------------\r
- The command line version of 7-Zip for macOS was released.\r
- The speed for LZMA and LZMA2 decompression in arm64 versions for macOS and Linux \r
  was increased by 20%-60%.\r
\r
\r
21.01 alpha    2021-03-09\r
-------------------------\r
- The command line version of 7-Zip for Linux was released.\r
- The improvements for speed of ARM64 version using hardware CPU instructions \r
  for AES, CRC-32, SHA-1 and SHA-256.\r
- Some bugs were fixed.\r
\r
\r
20.02 alpha    2020-08-08\r
-------------------------\r
- The default number of LZMA2 chunks per solid block in 7z archive was increased to 64.\r
  It allows to increase the compression speed for big 7z archives, if there is a big number \r
  of CPU cores and threads.\r
- The speed of PPMd compressing/decompressing was increased for 7z archives.\r
- The new -ssp switch. If the switch -ssp is specified, 7-Zip doesn't allow the system \r
  to modify "Last Access Time" property of source files for archiving and hashing operations. \r
- Some bugs were fixed.\r
\r
\r
20.00 alpha    2020-02-06\r
-------------------------\r
- 7-Zip now supports new optional match finders for LZMA/LZMA2 compression: bt5 and hc5, \r
  that can work faster than bt4 and hc4 match finders for the data with big redundancy.\r
- The compression ratio was improved for Fast and Fastest compression levels with the \r
  following default settings:\r
   - Fastest level (-mx1) : hc5 match finder with 256 KB dictionary.\r
   - Fast    level (-mx3) : hc5 match finder with 4 MB dictionary.\r
- Minor speed optimizations in multithreaded LZMA/LZMA2 compression for Normal/Maximum/Ultra \r
  compression levels.\r
\r
\r
19.00          2019-02-21\r
-------------------------\r
- Encryption strength for 7z archives was increased:\r
  the size of random initialization vector was increased from 64-bit to 128-bit,\r
  and the pseudo-random number generator was improved.\r
- The bug in 7zIn.c code was fixed.\r
\r
\r
18.06          2018-12-30\r
-------------------------\r
- The speed for LZMA/LZMA2 compressing was increased by 3-10%,\r
  and there are minor changes in compression ratio.\r
- Some bugs were fixed.\r
- The bug in 7-Zip 18.02-18.05 was fixed:\r
  There was memory leak in multithreading xz decoder - XzDecMt_Decode(),\r
  if xz stream contains only one block.\r
- The changes for MSVS compiler makefiles: \r
   - the makefiles now use "PLATFORM" macroname with values (x64, x86, arm64)\r
     instead of "CPU" macroname with values (AMD64, ARM64).\r
   - the makefiles by default now use static version of the run-time library.\r
\r
\r
18.05          2018-04-30\r
-------------------------\r
- The speed for LZMA/LZMA2 compressing was increased \r
    by 8% for fastest/fast compression levels and \r
    by 3% for normal/maximum compression levels.\r
- Previous versions of 7-Zip could work incorrectly in "Large memory pages" mode in\r
  Windows 10 because of some BUG with "Large Pages" in Windows 10. \r
  Now 7-Zip doesn't use "Large Pages" on Windows 10 up to revision 1709 (16299).\r
- The BUG was fixed in Lzma2Enc.c\r
    Lzma2Enc_Encode2() function worked incorretly,\r
      if (inStream == NULL) and the number of block threads is more than 1.\r
\r
\r
18.03 beta     2018-03-04\r
-------------------------\r
- Asm\x86\LzmaDecOpt.asm: new optimized LZMA decoder written in asm \r
  for x64 with about 30% higher speed than main version of LZMA decoder written in C.\r
- The speed for single-thread LZMA/LZMA2 decoder written in C was increased by 3%.\r
- 7-Zip now can use multi-threading for 7z/LZMA2 decoding,\r
  if there are multiple independent data chunks in LZMA2 stream.\r
- 7-Zip now can use multi-threading for xz decoding,\r
  if there are multiple blocks in xz stream.\r
\r
\r
18.01          2019-01-28\r
-------------------------\r
- The BUG in 17.01 - 18.00 beta was fixed:\r
  XzDec.c : random block unpacking and XzUnpacker_IsBlockFinished()\r
  didn't work correctly for xz archives without checksum (CRC).\r
\r
\r
18.00 beta     2019-01-10\r
-------------------------\r
- The BUG in xz encoder was fixed:\r
  There was memory leak of 16 KB for each file compressed with \r
  xz compression method, if additional filter was used.\r
\r
\r
17.01 beta     2017-08-28\r
-------------------------\r
- Minor speed optimization for LZMA2 (xz and 7z) multi-threading compression.\r
  7-Zip now uses additional memory buffers for multi-block LZMA2 compression.\r
  CPU utilization was slightly improved.\r
- 7-zip now creates multi-block xz archives by default. Block size can be \r
  specified with -ms[Size]{m|g} switch.\r
- xz decoder now can unpack random block from multi-block xz archives.\r
- 7-Zip command line: @listfile now doesn't work after -- switch.\r
  Use -i@listfile before -- switch instead.\r
- The BUGs were fixed:\r
  7-Zip 17.00 beta crashed for commands that write anti-item to 7z archive.\r
\r
\r
17.00 beta     2017-04-29\r
-------------------------\r
- NewHandler.h / NewHandler.cpp: \r
    now it redefines operator new() only for old MSVC compilers (_MSC_VER < 1900).\r
- C/7zTypes.h : the names of variables in interface structures were changed (vt).\r
- Some bugs were fixed. 7-Zip could crash in some cases.\r
- Some internal changes in code.\r
\r
\r
16.04          2016-10-04\r
-------------------------\r
- The bug was fixed in DllSecur.c.\r
\r
\r
16.03          2016-09-28\r
-------------------------\r
- SFX modules now use some protection against DLL preloading attack.\r
- Some bugs in 7z code were fixed.\r
\r
\r
16.02          2016-05-21\r
-------------------------\r
- The BUG in 16.00 - 16.01 was fixed:\r
  Split Handler (SplitHandler.cpp) returned incorrect \r
  total size value (kpidSize) for split archives.\r
\r
\r
16.01          2016-05-19\r
-------------------------	\r
- Some internal changes to reduce the number of compiler warnings.\r
\r
\r
16.00          2016-05-10\r
-------------------------	\r
- Some bugs were fixed.\r
\r
\r
15.12          2015-11-19\r
-------------------------	\r
- The BUG in C version of 7z decoder was fixed:\r
  7zDec.c : SzDecodeLzma2()\r
  7z decoder could mistakenly report about decoding error for some 7z archives\r
  that use LZMA2 compression method.\r
  The probability to get that mistaken decoding error report was about \r
  one error per 16384 solid blocks for solid blocks larger than 16 KB (compressed size). \r
- The BUG (in 9.26-15.11) in C version of 7z decoder was fixed:\r
  7zArcIn.c : SzReadHeader2()\r
  7z decoder worked incorrectly for 7z archives that contain \r
  empty solid blocks, that can be placed to 7z archive, if some file is \r
  unavailable for reading during archive creation.\r
\r
\r
15.09 beta     2015-10-16\r
-------------------------	\r
- The BUG in LZMA / LZMA2 encoding code was fixed.\r
  The BUG in LzFind.c::MatchFinder_ReadBlock() function.\r
  If input data size is larger than (4 GiB - dictionary_size),\r
  the following code worked incorrectly:\r
  -  LZMA : LzmaEnc_MemEncode(), LzmaEncode() : LZMA encoding functions \r
     for compressing from memory to memory. \r
     That BUG is not related to LZMA encoder version that works via streams.\r
  -  LZMA2 : multi-threaded version of LZMA2 encoder worked incorrectly, if \r
     default value of chunk size (CLzma2EncProps::blockSize) is changed \r
     to value larger than (4 GiB - dictionary_size).\r
\r
\r
9.38 beta      2015-01-03\r
-------------------------	\r
- The BUG in 9.31-9.37 was fixed:\r
  IArchiveGetRawProps interface was disabled for 7z archives.\r
- The BUG in 9.26-9.36 was fixed:\r
  Some code in CPP\7zip\Archive\7z\ worked correctly only under Windows.\r
\r
\r
9.36 beta      2014-12-26\r
-------------------------	\r
- The BUG in command line version was fixed:\r
  7-Zip created temporary archive in current folder during update archive\r
  operation, if -w{Path} switch was not specified. \r
  The fixed 7-Zip creates temporary archive in folder that contains updated archive.\r
- The BUG in 9.33-9.35 was fixed:\r
  7-Zip silently ignored file reading errors during 7z or gz archive creation,\r
  and the created archive contained only part of file that was read before error.\r
  The fixed 7-Zip stops archive creation and it reports about error.\r
\r
\r
9.35 beta      2014-12-07\r
-------------------------	\r
- 7zr.exe now support AES encryption.\r
- SFX mudules were added to LZMA SDK\r
- Some bugs were fixed.\r
\r
\r
9.21 beta      2011-04-11\r
-------------------------	\r
- New class FString for file names at file systems.\r
- Speed optimization in CRC code for big-endian CPUs.\r
- The BUG in Lzma2Dec.c was fixed:\r
    Lzma2Decode function didn't work.\r
\r
\r
9.18 beta      2010-11-02\r
-------------------------	\r
- New small SFX module for installers (SfxSetup).\r
\r
\r
9.12 beta      2010-03-24\r
-------------------------\r
- The BUG in LZMA SDK 9.* was fixed: LZMA2 codec didn't work,\r
  if more than 10 threads were used (or more than 20 threads in some modes).\r
\r
\r
9.11 beta      2010-03-15\r
-------------------------\r
- PPMd compression method support\r
   \r
\r
9.09           2009-12-12\r
-------------------------\r
- The bug was fixed:\r
   Utf16_To_Utf8 funstions in UTFConvert.cpp and 7zMain.c\r
   incorrectly converted surrogate characters (the code >= 0x10000) to UTF-8.\r
- Some bugs were fixed\r
\r
\r
9.06           2009-08-17\r
-------------------------\r
- Some changes in ANSI-C 7z Decoder interfaces.\r
\r
\r
9.04           2009-05-30\r
-------------------------\r
- LZMA2 compression method support\r
- xz format support\r
\r
\r
4.65           2009-02-03\r
-------------------------\r
- Some minor fixes\r
\r
\r
4.63           2008-12-31\r
-------------------------\r
- Some minor fixes\r
\r
\r
4.61 beta      2008-11-23\r
-------------------------\r
- The bug in ANSI-C LZMA Decoder was fixed:\r
    If encoded stream was corrupted, decoder could access memory \r
    outside of allocated range.\r
- Some changes in ANSI-C 7z Decoder interfaces.\r
- LZMA SDK is placed in the public domain.\r
\r
\r
4.60 beta      2008-08-19\r
-------------------------\r
- Some minor fixes.\r
\r
\r
4.59 beta      2008-08-13\r
-------------------------\r
- The bug was fixed:\r
    LZMA Encoder in fast compression mode could access memory outside of \r
    allocated range in some rare cases.\r
\r
\r
4.58 beta      2008-05-05\r
-------------------------\r
- ANSI-C LZMA Decoder was rewritten for speed optimizations.\r
- ANSI-C LZMA Encoder was included to LZMA SDK.\r
- C++ LZMA code now is just wrapper over ANSI-C code.\r
\r
\r
4.57           2007-12-12\r
-------------------------\r