[FFmpeg-devel] [PATCH] VC-1 MMX DSP functions

Christophe GISQUET christophe.gisquet
Tue Nov 13 23:17:41 CET 2007

Michael Niedermayer a ?crit :
> the code which is overall (whole decoder) fastest
> and for cases where 2 are indistingishable the simpler one

Sorry for the delay in replying but it was somewhat worth it: testing on
a P4 showed that at least one optimization was in fact degrading
performance (special case in vc1_put_shift2_mmx when stride == offset).

Therefore, final (as far as I see) patch attached.

MMX version for VC-1 subpel motion compensation functions. 30% faster

Best regards,
Christophe GISQUET
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