[FFmpeg-devel] [HACK] 50% faster H.264 decoding

Luca Barbato lu_zero
Tue Aug 17 18:37:21 CEST 2010


On 08/11/2010 11:32 PM, Jason Garrett-Glaser wrote:
> 2.  Reorder the H264Context to be a bit more cache-friendly and
> offset-friendly for ARM.

> 8.  Add prefetching of current-frame macroblock data, not just past frame data.

> 11. Make Golomb decoding use count-trailing-zeroes instead of a lookup
> table and branch -- it's faster on ARM that way.  Saves cache, too.

Those three looks salvageable.

lu

-- 

Luca Barbato
Gentoo/linux
http://dev.gentoo.org/~lu_zero




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