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| author | DRC <dcommander@users.sourceforge.net> | 2013-01-21 23:42:12 +0000 |
|---|---|---|
| committer | DRC <dcommander@users.sourceforge.net> | 2013-01-21 23:42:12 +0000 |
| commit | 5039d734d538ef4cd7081b1774921d1ef292e837 (patch) | |
| tree | 46c3ea7665e420a903ac8142504794b1f1b3fad6 /ChangeLog.txt | |
| parent | 98ca1c35d70fc0788d026938deed122a5abbb8f1 (diff) | |
| download | libjpeg-turbo-5039d734d538ef4cd7081b1774921d1ef292e837.tar.gz | |
Eliminated the awkward and confusing "TurboJPEG/OSS" designation, since there are no other active implementations of the TurboJPEG API anymore; don't refer to the libjpeg API library as "libjpeg-turbo" anymore, since that can be confusing; ARM v7s build instructions
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@919 632fc199-4ca6-4c93-a231-07263d6284db
Diffstat (limited to 'ChangeLog.txt')
| -rw-r--r-- | ChangeLog.txt | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/ChangeLog.txt b/ChangeLog.txt index b073d62c..56a858f2 100644 --- a/ChangeLog.txt +++ b/ChangeLog.txt @@ -184,7 +184,7 @@ NEON instructions. TurboJPEG 1.2 API uses pixel formats to define the size and component order of the uncompressed source/destination images, and it includes a more efficient version of TJBUFSIZE() that computes a worst-case JPEG size based on the level -of chrominance subsampling. The refactored implementation of TurboJPEG/OSS +of chrominance subsampling. The refactored implementation of the TurboJPEG API now uses the libjpeg memory source and destination managers, which allows the TurboJPEG compressor to grow the JPEG buffer as necessary. @@ -260,12 +260,12 @@ and libjpeg-turbo should now produce identical output to libjpeg v6b in all cases. [2] Despite the above, the fast integer forward DCT still degrades somewhat for -JPEG qualities greater than 95, so TurboJPEG/OSS will now automatically use the -slow integer forward DCT when generating JPEG images of quality 96 or greater. -This reduces compression performance by as much as 15% for these high-quality -images but is necessary to ensure that the images are perceptually lossless. -It also ensures that the library can avoid the performance pitfall created by -[1]. +JPEG qualities greater than 95, so the TurboJPEG wrapper will now automatically +use the slow integer forward DCT when generating JPEG images of quality 96 or +greater. This reduces compression performance by as much as 15% for these +high-quality images but is necessary to ensure that the images are perceptually +lossless. It also ensures that the library can avoid the performance pitfall +created by [1]. [3] Ported jpgtest.cxx to pure C to avoid the need for a C++ compiler. |