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

[Nicolas George]

Le decadi 30 fructidor, an CCXVIII, Grigori Goronzy a écrit :
> Instead of "x / 255" at all it's usually faster to do "(x + 255) >> 8",
> at least in my experience. You can easily transform all divisions to
> shifts in this inner loop. Haven't done any tests, though.

That is indeed much faster (+16,7% instead of +4.6%), but the rounding is
slightly different. I'll look more closely into it.

Regards,

-- 
  Nicolas George
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