[FFmpeg-devel] [PATCH] swscale: round on planar2x C code

Ramiro Polla ramiro.polla
Sun Sep 12 05:15:55 CEST 2010


Hi,

The C and MMX2/3dnow code differ in planar2x due to pavgb's rounding.
Attached patch makes the output similar.

I couldn't measure any speed difference. gcc ends up using "leal
3(xxx)" instead of "leal (xxx)" which doesn't seem to have a speed
penalty.

Otherwise we could put the MMX2/3dnow code under some if(flags &bitexact).

Ramiro Polla
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