blob: 22d66d9abb885801874a72dfc8d33a0d6725d1d4 [file] [log] [blame]
DRC6ee54592011-03-01 08:18:30 +000011.1.1
2=====
3
4[1] Fixed a 1-pixel error in row 0, column 21 of the luminance plane generated
5by tjEncodeYUV().
6
DRCdf1c38d2011-03-18 05:40:33 +00007[2] Fixed the accelerated Huffman decoder so that it mimics the behavior of
8the unaccelerated decoder and throws a warning if an unexpected marker is found
9in the middle of the JPEG data stream.
DRC6ee54592011-03-01 08:18:30 +000010
DRC47aaf6f2011-03-22 05:40:39 +000011[3] Older versions of MinGW64 prefixed symbol names with underscores by
DRC1da78582011-03-22 09:34:01 +000012default, which differed from the behavior of 64-bit Visual C++. MinGW64 1.0
13has adopted the behavior of 64-bit Visual C++ as the default, so to accommodate
14this, the libjpeg-turbo SIMD function names are no longer prefixed with an
15underscore when building with MinGW64. This means that, when building
16libjpeg-turbo with older versions of MinGW64, you will now have to add
17-fno-leading-underscore to the CFLAGS.
18
DRC9e50fa72011-04-01 11:24:31 +000019[4] Fixed a regression bug in the NSIS script that caused the Windows installer
20build to fail when using the Visual Studio IDE.
21
DRC59a58342011-04-02 05:40:16 +000022[5] Fixed a bug in jpeg_read_coefficients() whereby it would not initialize
DRCe7fde872011-04-03 07:09:49 +000023cinfo->image_width and cinfo->image_height if libjpeg v7 or v8 emulation was
24enabled. This specifically caused the jpegoptim program to fail if it was
25linked against a version of libjpeg-turbo that was built with libjpeg v7 or v8
26emulation.
DRC59a58342011-04-02 05:40:16 +000027
DRCa6471c32011-03-18 05:59:21 +000028
DRC4a1c2d92011-01-28 08:00:10 +0000291.1.0
30=====
DRCfa1d1832011-01-26 05:35:20 +000031
DRC72abc292011-02-18 01:45:24 +000032[1] The algorithm used by the SIMD quantization function cannot produce correct
33results when the JPEG quality is >= 98 and the fast integer forward DCT is
DRCbb4465f2011-02-18 02:41:03 +000034used. Thus, the non-SIMD quantization function is now used for those cases,
35and libjpeg-turbo should now produce identical output to libjpeg v6b in all
36cases.
DRCe1716b82011-02-18 03:19:43 +000037
DRC72abc292011-02-18 01:45:24 +000038[2] Despite the above, the fast integer forward DCT still degrades somewhat for
39JPEG qualities greater than 95, so TurboJPEG/OSS will now automatically use the
40slow integer forward DCT when generating JPEG images of quality 96 or greater.
41This reduces compression performance by as much as 15% for these high-quality
42images but is necessary to ensure that the images are perceptually lossless.
DRCbb4465f2011-02-18 02:41:03 +000043It also ensures that the library can avoid the performance pitfall created by
44[1].
DRC2e4d0442011-02-08 01:18:37 +000045
DRC72abc292011-02-18 01:45:24 +000046[3] Ported jpgtest.cxx to pure C to avoid the need for a C++ compiler.
47
48[4] Fixed visual artifacts in grayscale JPEG compression caused by a typo in
DRC2a33dfc2011-04-05 06:51:59 +000049the RGB-to-luminance lookup tables.
DRCe2f37182011-02-17 07:53:46 +000050
DRC240d82f2011-02-19 00:00:34 +000051[5] The Windows distribution packages now include the libjpeg run-time programs
52(cjpeg, etc.)
53
DRCdb8df012011-02-19 00:01:11 +000054[6] All packages now include jpgtest.
DRC240d82f2011-02-19 00:00:34 +000055
DRC10e31932011-02-25 00:14:12 +000056[7] The TurboJPEG dynamic library now uses versioned symbols.
57
58[8] Added two new TurboJPEG API functions, tjEncodeYUV() and
59tjDecompressToYUV(), to replace the somewhat hackish TJ_YUV flag.
60
DRC2d94e262011-01-25 06:52:31 +000061
DRC4a1c2d92011-01-28 08:00:10 +0000621.0.90 (1.1 beta1)
63==================
DRC766dc5c2010-10-12 02:50:18 +000064
DRCf38eee02011-02-18 07:00:38 +000065[1] Added emulation of the libjpeg v7 and v8 APIs and ABIs. See
DRCefa618e2010-10-18 08:41:11 +000066README-turbo.txt for more details. This feature was sponsored by CamTrace SAS.
67
68[2] Created a new CMake-based build system for the Visual C++ and MinGW builds.
DRC766dc5c2010-10-12 02:50:18 +000069
DRC09854f52010-11-04 22:39:59 +000070[3] TurboJPEG/OSS can now compress from/decompress to grayscale bitmaps.
71
DRC01e69092011-01-06 01:19:43 +000072[4] jpgtest can now be used to test decompression performance with existing
73JPEG images.
DRCe89bbae2010-11-12 10:18:08 +000074
DRCd1c281a2010-11-17 22:44:40 +000075[5] If the default install prefix (/opt/libjpeg-turbo) is used, then
76'make install' now creates /opt/libjpeg-turbo/lib32 and
77/opt/libjpeg-turbo/lib64 sym links to duplicate the behavior of the binary
78packages.
79
DRCec311932010-11-22 19:51:42 +000080[6] All symbols in the libjpeg-turbo dynamic library are now versioned, even
81when the library is built with libjpeg v6b emulation.
82
DRC01e69092011-01-06 01:19:43 +000083[7] Added arithmetic encoding and decoding support (can be disabled with
DRC245cfdf2010-11-23 17:11:06 +000084configure or CMake options)
DRC66f97e62010-11-23 05:49:54 +000085
DRC9e17f7d2010-12-10 04:59:13 +000086[8] Added a TJ_YUV flag to TurboJPEG/OSS which causes both the compressor and
87decompressor to output planar YUV images.
DRCfbb67472010-11-24 04:02:37 +000088
DRC50c657b2010-12-14 01:23:16 +000089[9] Added an extended version of tjDecompressHeader() to TurboJPEG/OSS which
90allows the caller to determine the type of subsampling used in a JPEG image.
91
DRC4a1c2d92011-01-28 08:00:10 +000092[10] Added further protections against invalid Huffman codes.
DRCfa1d1832011-01-26 05:35:20 +000093
DRC766dc5c2010-10-12 02:50:18 +000094
DRC4a1c2d92011-01-28 08:00:10 +0000951.0.1
96=====
DRC0fbb28e2010-07-30 17:15:52 +000097
98[1] The Huffman decoder will now handle erroneous Huffman codes (for instance,
99from a corrupt JPEG image.) Previously, these would cause libjpeg-turbo to
100crash under certain circumstances.
101
DRC025a2792010-08-07 16:27:56 +0000102[2] Fixed typo in SIMD dispatch routines which was causing 4:2:2 upsampling to
103be used instead of 4:2:0 when decompressing JPEG images using SSE2 code.
DRC30959712010-08-07 16:06:56 +0000104
DRCbdb12882010-08-21 21:14:17 +0000105[3] configure script will now automatically determine whether the
106INCOMPLETE_TYPES_BROKEN macro should be defined.
107
DRC0fbb28e2010-07-30 17:15:52 +0000108
DRC4a1c2d92011-01-28 08:00:10 +00001091.0.0
110=====
DRC49597872010-05-17 20:47:57 +0000111
DRCc773d102010-06-05 06:58:22 +0000112[1] 2983700: Further FreeBSD build tweaks (no longer necessary to specify
113--host when configuring on a 64-bit system)
DRC49597872010-05-17 20:47:57 +0000114
DRCf12c7db2010-05-18 19:04:47 +0000115[2] Created sym. links in the Unix/Linux packages so that the TurboJPEG
116include file can always be found in /opt/libjpeg-turbo/include, the 32-bit
117static libraries can always be found in /opt/libjpeg-turbo/lib32, and the
11864-bit static libraries can always be found in /opt/libjpeg-turbo/lib64.
119
DRC4bf3b582010-06-05 01:03:23 +0000120[3] The Unix/Linux distribution packages now include the libjpeg run-time
121programs (cjpeg, etc.) and man pages.
122
123[4] Created a 32-bit supplementary package for amd64 Debian systems which
124contains just the 32-bit libjpeg-turbo libraries.
125
126[5] Moved the libraries from */lib32 to */lib in the i386 Debian package.
127
DRCdf3337c2010-07-02 09:13:58 +0000128[6] Include distribution package for Cygwin
DRC4bf3b582010-06-05 01:03:23 +0000129
DRCdf3337c2010-07-02 09:13:58 +0000130[7] No longer necessary to specify --without-simd on non-x86 architectures, and
DRC38ccf852010-06-10 19:49:49 +0000131unit tests now work on those architectures.
132
DRC49597872010-05-17 20:47:57 +0000133
DRC4a1c2d92011-01-28 08:00:10 +00001340.0.93
135======
DRC0f413b22010-04-06 20:05:39 +0000136
DRCc773d102010-06-05 06:58:22 +0000137[1] 2982659, Fixed x86-64 build on FreeBSD systems
DRC0f413b22010-04-06 20:05:39 +0000138
DRCc773d102010-06-05 06:58:22 +0000139[2] 2988188: Added support for Windows 64-bit systems
DRC1a2219e2010-05-10 20:03:36 +0000140
DRC0f413b22010-04-06 20:05:39 +0000141
DRC4a1c2d92011-01-28 08:00:10 +00001420.0.91
143======
DRCae19bf62010-03-15 11:40:31 +0000144
145[1] Added documentation to .deb packages
146
147[2] 2968313: Fixed data corruption issues when decompressing large JPEG images
148and/or using buffered I/O with the libjpeg-turbo decompressor
DRC4a1c2d92011-01-28 08:00:10 +0000149
150
1510.0.90
152======
153
154Initial release