blob: 14d251ae3fee69b5aba71bede2ed478d1942ff1d [file] [log] [blame]
DRC4a1c2d92011-01-28 08:00:10 +000011.1.0
2=====
DRCfa1d1832011-01-26 05:35:20 +00003
DRC72abc292011-02-18 01:45:24 +00004[1] The algorithm used by the SIMD quantization function cannot produce correct
5results when the JPEG quality is >= 98 and the fast integer forward DCT is
6used. Thus, the non-SIMD quantization function is now used for those cases.
DRCe1716b82011-02-18 03:19:43 +00007
DRC72abc292011-02-18 01:45:24 +00008[2] Despite the above, the fast integer forward DCT still degrades somewhat for
9JPEG qualities greater than 95, so TurboJPEG/OSS will now automatically use the
10slow integer forward DCT when generating JPEG images of quality 96 or greater.
11This reduces compression performance by as much as 15% for these high-quality
12images but is necessary to ensure that the images are perceptually lossless.
DRC2e4d0442011-02-08 01:18:37 +000013
DRC72abc292011-02-18 01:45:24 +000014[3] Ported jpgtest.cxx to pure C to avoid the need for a C++ compiler.
15
16[4] Fixed visual artifacts in grayscale JPEG compression caused by a typo in
DRCe2f37182011-02-17 07:53:46 +000017the RGB-to-chrominance lookup tables.
18
DRC2d94e262011-01-25 06:52:31 +000019
DRC4a1c2d92011-01-28 08:00:10 +0000201.0.90 (1.1 beta1)
21==================
DRC766dc5c2010-10-12 02:50:18 +000022
DRCefa618e2010-10-18 08:41:11 +000023[1] Added emulation of the libjpeg v7 and v8b APIs and ABIs. See
24README-turbo.txt for more details. This feature was sponsored by CamTrace SAS.
25
26[2] Created a new CMake-based build system for the Visual C++ and MinGW builds.
DRC766dc5c2010-10-12 02:50:18 +000027
DRC09854f52010-11-04 22:39:59 +000028[3] TurboJPEG/OSS can now compress from/decompress to grayscale bitmaps.
29
DRC01e69092011-01-06 01:19:43 +000030[4] jpgtest can now be used to test decompression performance with existing
31JPEG images.
DRCe89bbae2010-11-12 10:18:08 +000032
DRCd1c281a2010-11-17 22:44:40 +000033[5] If the default install prefix (/opt/libjpeg-turbo) is used, then
34'make install' now creates /opt/libjpeg-turbo/lib32 and
35/opt/libjpeg-turbo/lib64 sym links to duplicate the behavior of the binary
36packages.
37
DRCec311932010-11-22 19:51:42 +000038[6] All symbols in the libjpeg-turbo dynamic library are now versioned, even
39when the library is built with libjpeg v6b emulation.
40
DRC01e69092011-01-06 01:19:43 +000041[7] Added arithmetic encoding and decoding support (can be disabled with
DRC245cfdf2010-11-23 17:11:06 +000042configure or CMake options)
DRC66f97e62010-11-23 05:49:54 +000043
DRC9e17f7d2010-12-10 04:59:13 +000044[8] Added a TJ_YUV flag to TurboJPEG/OSS which causes both the compressor and
45decompressor to output planar YUV images.
DRCfbb67472010-11-24 04:02:37 +000046
DRC50c657b2010-12-14 01:23:16 +000047[9] Added an extended version of tjDecompressHeader() to TurboJPEG/OSS which
48allows the caller to determine the type of subsampling used in a JPEG image.
49
DRC4a1c2d92011-01-28 08:00:10 +000050[10] Added further protections against invalid Huffman codes.
DRCfa1d1832011-01-26 05:35:20 +000051
DRC766dc5c2010-10-12 02:50:18 +000052
DRC4a1c2d92011-01-28 08:00:10 +0000531.0.1
54=====
DRC0fbb28e2010-07-30 17:15:52 +000055
56[1] The Huffman decoder will now handle erroneous Huffman codes (for instance,
57from a corrupt JPEG image.) Previously, these would cause libjpeg-turbo to
58crash under certain circumstances.
59
DRC025a2792010-08-07 16:27:56 +000060[2] Fixed typo in SIMD dispatch routines which was causing 4:2:2 upsampling to
61be used instead of 4:2:0 when decompressing JPEG images using SSE2 code.
DRC30959712010-08-07 16:06:56 +000062
DRCbdb12882010-08-21 21:14:17 +000063[3] configure script will now automatically determine whether the
64INCOMPLETE_TYPES_BROKEN macro should be defined.
65
DRC0fbb28e2010-07-30 17:15:52 +000066
DRC4a1c2d92011-01-28 08:00:10 +0000671.0.0
68=====
DRC49597872010-05-17 20:47:57 +000069
DRCc773d102010-06-05 06:58:22 +000070[1] 2983700: Further FreeBSD build tweaks (no longer necessary to specify
71--host when configuring on a 64-bit system)
DRC49597872010-05-17 20:47:57 +000072
DRCf12c7db2010-05-18 19:04:47 +000073[2] Created sym. links in the Unix/Linux packages so that the TurboJPEG
74include file can always be found in /opt/libjpeg-turbo/include, the 32-bit
75static libraries can always be found in /opt/libjpeg-turbo/lib32, and the
7664-bit static libraries can always be found in /opt/libjpeg-turbo/lib64.
77
DRC4bf3b582010-06-05 01:03:23 +000078[3] The Unix/Linux distribution packages now include the libjpeg run-time
79programs (cjpeg, etc.) and man pages.
80
81[4] Created a 32-bit supplementary package for amd64 Debian systems which
82contains just the 32-bit libjpeg-turbo libraries.
83
84[5] Moved the libraries from */lib32 to */lib in the i386 Debian package.
85
DRCdf3337c2010-07-02 09:13:58 +000086[6] Include distribution package for Cygwin
DRC4bf3b582010-06-05 01:03:23 +000087
DRCdf3337c2010-07-02 09:13:58 +000088[7] No longer necessary to specify --without-simd on non-x86 architectures, and
DRC38ccf852010-06-10 19:49:49 +000089unit tests now work on those architectures.
90
DRC49597872010-05-17 20:47:57 +000091
DRC4a1c2d92011-01-28 08:00:10 +0000920.0.93
93======
DRC0f413b22010-04-06 20:05:39 +000094
DRCc773d102010-06-05 06:58:22 +000095[1] 2982659, Fixed x86-64 build on FreeBSD systems
DRC0f413b22010-04-06 20:05:39 +000096
DRCc773d102010-06-05 06:58:22 +000097[2] 2988188: Added support for Windows 64-bit systems
DRC1a2219e2010-05-10 20:03:36 +000098
DRC0f413b22010-04-06 20:05:39 +000099
DRC4a1c2d92011-01-28 08:00:10 +00001000.0.91
101======
DRCae19bf62010-03-15 11:40:31 +0000102
103[1] Added documentation to .deb packages
104
105[2] 2968313: Fixed data corruption issues when decompressing large JPEG images
106and/or using buffered I/O with the libjpeg-turbo decompressor
DRC4a1c2d92011-01-28 08:00:10 +0000107
108
1090.0.90
110======
111
112Initial release