diff options
| author | dcommander <dcommander@3789f03b-4d11-0410-bbf8-ca57d06f2519> | 2010-02-13 23:06:03 +0000 |
|---|---|---|
| committer | dcommander <dcommander@3789f03b-4d11-0410-bbf8-ca57d06f2519> | 2010-02-13 23:06:03 +0000 |
| commit | f65195ccf934b974c49365cb458de4ebf8e05d91 (patch) | |
| tree | e85b88409b7675aa1abe55e83b4ff9e5ba603c02 /trunk/README-turbo.txt | |
| parent | 4380e47821c8f943cf009088f61259a2a56ae7c0 (diff) | |
License info + updated performance claims
git-svn-id: https://libjpeg-turbo.svn.sourceforge.net/svnroot/libjpeg-turbo@88 3789f03b-4d11-0410-bbf8-ca57d06f2519
Diffstat (limited to 'trunk/README-turbo.txt')
| -rwxr-xr-x | trunk/README-turbo.txt | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/trunk/README-turbo.txt b/trunk/README-turbo.txt index 798d643..b2b3471 100755 --- a/trunk/README-turbo.txt +++ b/trunk/README-turbo.txt @@ -4,7 +4,7 @@ libjpeg-turbo is a high-speed version of libjpeg for x86 and x86-64 processors which uses SIMD instructions (MMX, SSE2, etc.) to accelerate baseline JPEG -compression and decompression. libjpeg-turbo is generally 2-3x as fast +compression and decompression. libjpeg-turbo is generally 2-4x as fast as the unmodified version of libjpeg, all else being equal. libjpeg-turbo was originally based on libjpeg/SIMD by Miyasaka Masaru, but @@ -13,7 +13,7 @@ including improved support for Mac OS X, 64-bit support, support for 32-bit and big endian pixel formats, accelerated Huffman encoding/decoding, and various bug fixes. The goal was to produce a fully open source codec that could replace the partially closed source TurboJPEG/IPP codec used by VirtualGL -and TurboVNC. libjpeg-turbo generally performs in the range of 80-110% of +and TurboVNC. libjpeg-turbo generally performs in the range of 80-120% of TurboJPEG/IPP. It is faster in some areas but slower in others. It was decided to split libjpeg-turbo into a separate SDK so that other @@ -23,6 +23,17 @@ libjpeg on most systems. ******************************************************************************* +** License +******************************************************************************* + +Some of the optimizations to the Huffman encoder/decoder were borrowed from +VirtualGL, and thus libjpeg-turbo, as a whole, falls under the wxWindows +Library Licence, Version 3.1. A copy of this license can be found in this +directory under LICENSE.txt. The rest of the source code, apart from these +modifications, falls under a less restrictive license (see README.) + + +******************************************************************************* ** Building on Unix Platforms, Cygwin, and MinGW ******************************************************************************* |