[MPlayer-dev-eng] [PATCH] yadif SSE2/SSSE3 optimization

[Zhou, Zongyi]

Hi all, 

I made this patch from ffdshow-mt branch. The original SSE2/SSSE3 codes are written by h.yamagata.
I ported those codes back to mplayer and replaced all movdqa/movdqu with movaps/movups.

My tests show that on Intel CPUs (except Yonah), SSE2 is ~20% faster than MMX2 and SSSE3 is 30% faster than MMX2.
However on AMD CPUs (except Socket 754 Semprons), SSE2 is ~5% slower than MMX2.
So now SSE2 function is used only on Intel CPUs.

Regards,

ZZ
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