[Ffmpeg-devel] [PATCH] *_h264_chroma_mc8 mmx optimizaitons

Zoltan Hidvegi mplayer
Mon May 23 08:34:16 CEST 2005

I've been playing with x264, and it's pretty cool, but it takes too
much time to decode.  So I've run the profiler, and saw lots of time
(11% of the total time) spent in *_h264_chroma_mc8.  They are not the
best for mmx, but I rewrote them in MMX, and I was able to speed it up
a bit, I guess they are about 30-40% faster on my 533MHz Pentimum
III-M laptop (800MHz CPU speedsteped to 533MHz), reducing the overall
time to decode by 3-4%.

I've tested it with mplayer -vo md5sum on a 1024x576 x264 video I've

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