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d9e556ebd0
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2 Commits

Author SHA1 Message Date
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