Commit Graph

4 Commits

Author SHA1 Message Date
Michael Niedermayer
a7ea733b72 avcodec/simple_idct_template: fix row rounder
MSE changes from 0.04890000 to 0.02969844

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2014-01-14 15:58:59 +01:00
Michael Niedermayer
cca2772e16 avcodec/simple_idct_template: change the idct coefficients so that they match the x86 code
no changes in either standard deviation or PSNR is seen in any of the changed fate
cases

MSE changes from 0.05012422 to 0.04890000

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2014-01-14 15:58:58 +01:00
Michael Niedermayer
d9e556ebd0 avcodec/proresdsp & idct: move biasing from after the IDCT into the IDCT
This replaces 64 additions by 8 additions

MSE Changes from 0.04873672 to 0.05012422

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2014-01-14 15:58:57 +01:00
Reimar Döffinger
547c2f002a Make decoding alpha optional for some codecs.
For codecs where decoding of a whole plane can simply
be skipped, we should offer applications to not decode
alpha for better performance (ca. 30% less CPU usage
and 40% reduced memory bandwidth).
It also means applications do not need to implement support
(even if it is rather simple) for YUVA formats in order to be
able to play these files.

Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
2013-09-22 16:20:54 +02:00