Commit Graph

6 Commits

Author SHA1 Message Date
DRC
8644ed2a04 Support additional scaling factors when decompressing 2012-01-28 01:48:07 +00:00
Pierre Ossman
649fe159ce Add MMX SIMD implementation of computationally intensive routines. 2009-03-09 13:25:30 +00:00
Pierre Ossman
e1594812ac "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.
2009-03-09 13:23:04 +00:00
Pierre Ossman
a4f55b50c9 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.
2009-03-09 10:37:20 +00:00
Thomas G. Lane
16c97143f3 The Independent JPEG Group's JPEG software v6a 2014-09-07 20:00:00 +01:00
Thomas G. Lane
c5414ae082 The Independent JPEG Group's JPEG software v5 2014-09-07 20:00:00 +01:00