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8 Commits

Author SHA1 Message Date
DRC
67403cc55f Support additional scaling factors when decompressing 
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@753 632fc199-4ca6-4c93-a231-07263d6284db
 2012-01-28 01:48:07 +00:00
Guido Vollbeding
5996a25e2f The Independent JPEG Group's JPEG software v7 2015-07-27 13:44:25 -05:00
Thomas G. Lane
489583f516 The Independent JPEG Group's JPEG software v6a 2015-07-29 15:32:35 -05:00
Thomas G. Lane
36a4ccccd3 The Independent JPEG Group's JPEG software v5 2015-07-29 15:28:00 -05:00
Pierre Ossman
5eb84ff97f Add MMX SIMD implementation of computationally intensive routines. 
git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@17 632fc199-4ca6-4c93-a231-07263d6284db
 2009-03-09 13:25:30 +00:00
MIYASAKA Masaru
a2e6a9dd47 IJG R6b with x86SIMD V1.02 
Independent JPEG Group's JPEG software release 6b
with x86 SIMD extension for IJG JPEG library version 1.02
 2015-07-29 16:36:25 -05:00
Pierre Ossman
dedc42e268 "Optimise" quantization step by replacing the division by a multiplication. 
This has no measurable difference right now but makes it possible to do
SIMD implementations of this stage.


git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@16 632fc199-4ca6-4c93-a231-07263d6284db
 2009-03-09 13:23:04 +00:00
Pierre Ossman
49dcbfbf13 Split up the forward DCT routine into three stages 
Divide it into sample conversion, DCT and quantization in order to
easily provide alternative implementations of each stage.


git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/trunk@13 632fc199-4ca6-4c93-a231-07263d6284db
 2009-03-09 10:37:20 +00:00