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3 Commits

Author SHA1 Message Date
Clément Bœsch
554d819062 avutil/pixelutils: faster pixelutils_sad_16x16 
501 to 439 decicycles.

See 45c7f3997ea11c3d1007b2126b1c0049a8c27105.
 2014-08-23 20:12:56 +02:00
Clément Bœsch
45c7f3997e avutil/pixelutils: faster pixelutils_sad_[au]_16x16 
~560 → ~500 decicycles

This is following the comments from Michael in
https://ffmpeg.org/pipermail/ffmpeg-devel/2014-August/160599.html

Using 2 registers for accumulator didn't help. On the other hand,
some re-ordering between the movs and psadbw allowed going ~538 to ~500.
 2014-08-23 10:18:53 +02:00
Clément Bœsch
28a2107a8d avutil: add pixelutils API 2014-08-05 21:05:52 +02:00