blob: 15bbc3df3f8ae0a9aac6ff32606c2183ac17f8bf [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
DRCa6471c32011-03-18 05:59:21 +000011
DRC4a1c2d92011-01-28 08:00:10 +0000121.1.0
13=====
DRCfa1d1832011-01-26 05:35:20 +000014
DRC72abc292011-02-18 01:45:24 +000015[1] The algorithm used by the SIMD quantization function cannot produce correct
16results when the JPEG quality is >= 98 and the fast integer forward DCT is
DRCbb4465f2011-02-18 02:41:03 +000017used. Thus, the non-SIMD quantization function is now used for those cases,
18and libjpeg-turbo should now produce identical output to libjpeg v6b in all
19cases.
DRCe1716b82011-02-18 03:19:43 +000020
DRC72abc292011-02-18 01:45:24 +000021[2] Despite the above, the fast integer forward DCT still degrades somewhat for
22JPEG qualities greater than 95, so TurboJPEG/OSS will now automatically use the
23slow integer forward DCT when generating JPEG images of quality 96 or greater.
24This reduces compression performance by as much as 15% for these high-quality
25images but is necessary to ensure that the images are perceptually lossless.
DRCbb4465f2011-02-18 02:41:03 +000026It also ensures that the library can avoid the performance pitfall created by
27[1].
DRC2e4d0442011-02-08 01:18:37 +000028
DRC72abc292011-02-18 01:45:24 +000029[3] Ported jpgtest.cxx to pure C to avoid the need for a C++ compiler.
30
31[4] Fixed visual artifacts in grayscale JPEG compression caused by a typo in
DRCe2f37182011-02-17 07:53:46 +000032the RGB-to-chrominance lookup tables.
33
DRC240d82f2011-02-19 00:00:34 +000034[5] The Windows distribution packages now include the libjpeg run-time programs
35(cjpeg, etc.)
36
DRCdb8df012011-02-19 00:01:11 +000037[6] All packages now include jpgtest.
DRC240d82f2011-02-19 00:00:34 +000038
DRC10e31932011-02-25 00:14:12 +000039[7] The TurboJPEG dynamic library now uses versioned symbols.
40
41[8] Added two new TurboJPEG API functions, tjEncodeYUV() and
42tjDecompressToYUV(), to replace the somewhat hackish TJ_YUV flag.
43
DRC2d94e262011-01-25 06:52:31 +000044
DRC4a1c2d92011-01-28 08:00:10 +0000451.0.90 (1.1 beta1)
46==================
DRC766dc5c2010-10-12 02:50:18 +000047
DRCf38eee02011-02-18 07:00:38 +000048[1] Added emulation of the libjpeg v7 and v8 APIs and ABIs. See
DRCefa618e2010-10-18 08:41:11 +000049README-turbo.txt for more details. This feature was sponsored by CamTrace SAS.
50
51[2] Created a new CMake-based build system for the Visual C++ and MinGW builds.
DRC766dc5c2010-10-12 02:50:18 +000052
DRC09854f52010-11-04 22:39:59 +000053[3] TurboJPEG/OSS can now compress from/decompress to grayscale bitmaps.
54
DRC01e69092011-01-06 01:19:43 +000055[4] jpgtest can now be used to test decompression performance with existing
56JPEG images.
DRCe89bbae2010-11-12 10:18:08 +000057
DRCd1c281a2010-11-17 22:44:40 +000058[5] If the default install prefix (/opt/libjpeg-turbo) is used, then
59'make install' now creates /opt/libjpeg-turbo/lib32 and
60/opt/libjpeg-turbo/lib64 sym links to duplicate the behavior of the binary
61packages.
62
DRCec311932010-11-22 19:51:42 +000063[6] All symbols in the libjpeg-turbo dynamic library are now versioned, even
64when the library is built with libjpeg v6b emulation.
65
DRC01e69092011-01-06 01:19:43 +000066[7] Added arithmetic encoding and decoding support (can be disabled with
DRC245cfdf2010-11-23 17:11:06 +000067configure or CMake options)
DRC66f97e62010-11-23 05:49:54 +000068
DRC9e17f7d2010-12-10 04:59:13 +000069[8] Added a TJ_YUV flag to TurboJPEG/OSS which causes both the compressor and
70decompressor to output planar YUV images.
DRCfbb67472010-11-24 04:02:37 +000071
DRC50c657b2010-12-14 01:23:16 +000072[9] Added an extended version of tjDecompressHeader() to TurboJPEG/OSS which
73allows the caller to determine the type of subsampling used in a JPEG image.
74
DRC4a1c2d92011-01-28 08:00:10 +000075[10] Added further protections against invalid Huffman codes.
DRCfa1d1832011-01-26 05:35:20 +000076
DRC766dc5c2010-10-12 02:50:18 +000077
DRC4a1c2d92011-01-28 08:00:10 +0000781.0.1
79=====
DRC0fbb28e2010-07-30 17:15:52 +000080
81[1] The Huffman decoder will now handle erroneous Huffman codes (for instance,
82from a corrupt JPEG image.) Previously, these would cause libjpeg-turbo to
83crash under certain circumstances.
84
DRC025a2792010-08-07 16:27:56 +000085[2] Fixed typo in SIMD dispatch routines which was causing 4:2:2 upsampling to
86be used instead of 4:2:0 when decompressing JPEG images using SSE2 code.
DRC30959712010-08-07 16:06:56 +000087
DRCbdb12882010-08-21 21:14:17 +000088[3] configure script will now automatically determine whether the
89INCOMPLETE_TYPES_BROKEN macro should be defined.
90
DRC0fbb28e2010-07-30 17:15:52 +000091
DRC4a1c2d92011-01-28 08:00:10 +0000921.0.0
93=====
DRC49597872010-05-17 20:47:57 +000094
DRCc773d102010-06-05 06:58:22 +000095[1] 2983700: Further FreeBSD build tweaks (no longer necessary to specify
96--host when configuring on a 64-bit system)
DRC49597872010-05-17 20:47:57 +000097
DRCf12c7db2010-05-18 19:04:47 +000098[2] Created sym. links in the Unix/Linux packages so that the TurboJPEG
99include file can always be found in /opt/libjpeg-turbo/include, the 32-bit
100static libraries can always be found in /opt/libjpeg-turbo/lib32, and the
10164-bit static libraries can always be found in /opt/libjpeg-turbo/lib64.
102
DRC4bf3b582010-06-05 01:03:23 +0000103[3] The Unix/Linux distribution packages now include the libjpeg run-time
104programs (cjpeg, etc.) and man pages.
105
106[4] Created a 32-bit supplementary package for amd64 Debian systems which
107contains just the 32-bit libjpeg-turbo libraries.
108
109[5] Moved the libraries from */lib32 to */lib in the i386 Debian package.
110
DRCdf3337c2010-07-02 09:13:58 +0000111[6] Include distribution package for Cygwin
DRC4bf3b582010-06-05 01:03:23 +0000112
DRCdf3337c2010-07-02 09:13:58 +0000113[7] No longer necessary to specify --without-simd on non-x86 architectures, and
DRC38ccf852010-06-10 19:49:49 +0000114unit tests now work on those architectures.
115
DRC49597872010-05-17 20:47:57 +0000116
DRC4a1c2d92011-01-28 08:00:10 +00001170.0.93
118======
DRC0f413b22010-04-06 20:05:39 +0000119
DRCc773d102010-06-05 06:58:22 +0000120[1] 2982659, Fixed x86-64 build on FreeBSD systems
DRC0f413b22010-04-06 20:05:39 +0000121
DRCc773d102010-06-05 06:58:22 +0000122[2] 2988188: Added support for Windows 64-bit systems
DRC1a2219e2010-05-10 20:03:36 +0000123
DRC0f413b22010-04-06 20:05:39 +0000124
DRC4a1c2d92011-01-28 08:00:10 +00001250.0.91
126======
DRCae19bf62010-03-15 11:40:31 +0000127
128[1] Added documentation to .deb packages
129
130[2] 2968313: Fixed data corruption issues when decompressing large JPEG images
131and/or using buffered I/O with the libjpeg-turbo decompressor
DRC4a1c2d92011-01-28 08:00:10 +0000132
133
1340.0.90
135======
136
137Initial release