[FFmpeg-devel] [PATCH] More H.264 decoding speed tweaks

Jason Garrett-Glaser darkshikari
Sat Jun 21 02:27:48 CEST 2008

Mostly write-combining/similar, along with removal of "dc_add" from
the main decoding loop.  Justification for this: in all my tests the
cost of the extra memory load, comparison, and relatively
unpredictable branch exceeded the savings from using dc_add.  I
suspect others may want to run some START_TIMER/STOP_TIMER benchmarks
on this just to make sure its true for other processors too, and it
isn't just something bizarre about my machine or input test files.

Dark Shikari
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