[x264-devel] [PATCH] Speedups of various sorts involving macroblock_encode and RDO.

DAVID ZHOU zhouwei926 at gmail.com
Wed Apr 23 13:40:46 CEST 2008


Hi,

I want to port x264 into blackfin uclinux, how should I do?
Could anyone give me some advice and show me the porting steps?

As I know , there are three arch support: x86 ppc and so on.

Thanks in advance!!






2008/4/23, Guillaume POIRIER <poirierg at gmail.com>:
>
> Hello,
>
> On 3/14/08, Jason Garrett-Glaser <darkshikari at gmail.com> wrote:
> > The 4th speedup was simply changing CABAC copy (which is done on every
> >  single RDO call, even the single-partition i4x4 RDO calls) from
> >  memcpy() to a custom ASM function.
> >
> >  On 32-bit Windows, this cuts the clock cost from ~200 clocks to ~53
> >  clocks.  Compare this to a total cost of ~9000 clocks for
> >  full-macroblock RDO, and I would assume 10-20 times less for
> >  single-partition RDO.
>
> Jason, has this patch been merged in x264's repository?
>
> Guillaume
> --
> I don't measure a man's success by how high he climbs but how high he
> bounces when he hits bottom.
> -- George S. Patton
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