[FFmpeg-devel] [PATCH] VP8 MMX idct_add

Ronald S. Bultje rsbultje
Tue Jun 29 01:12:18 CEST 2010


as per $subj. Performance goes from approx. 850-900 cycles C to
195-200 cycles with MMX.

Note how I'm pulling in x86util.asm for a 4x4 transpose and sumsub
macro, these are pretty simple but I don't want to duplicate them.
Loren, please consider LGPL'ing these (trivial) parts of x86util.asm
(into a separate file with LGPL-only code), otherwise I'll have to
duplicate them somewhere else in libavcodec/x86/ and screw up
x86util.asm to include this file and de-duplicate it accordingly.

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