[MPlayer-dev-eng] [PATCH] vf_ass: avoid a division

[Nicolas George]

Hi.

The attached patch avoids a division in the inner loops of the alpha
blending code of vf_ass.

On my box, it gives about +4.6% speed.

(For ten runs, without subs: 0.66s ± 0.047s, original with a lot of subs:
5.44s ± 0.056, modified: 5.22s ± 0.052; command line:
./mplayer -vo xv -ass -sub big.ass -really-quiet -demuxer rawvideo -rawvideo
w=640:h=400:format=y8:fps=50 /dev/zero -endpos 10.1
)

Regards,

-- 
  Nicolas George
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