[FFmpeg-devel] [PATCH] h264 parallelized,

Michael Niedermayer michaelni
Tue Jun 19 21:51:50 CEST 2007


On Tue, Jun 19, 2007 at 04:23:13PM +0200, Andreas ?man wrote:
> Hi
> Michael Niedermayer wrote:
> > Hi
> > 
> > ok if md5 doesnt change for type 2 content and theres no meassureable
> > speed loss for normal non type 2 content
> I've tested with all h264-samples (i found) @ mphq + all the
> type-2 content i have. MD5 does match. (I can make the
> results available upon req.)
> There is no measurable slow down for type 0/1 content.
> However, when doing this I realized that there is no significant
> speedup for type-2 content either (contrary to what i previously
> claimed).
> I have only done detailed speed tests on the entire parallelization
> patch as a whole (found in a previous mail; 4666868E.10401 at olebyn.nu).
> Probably, the addition of 'int simple' to xchg_mb_border() did
> all of that (small) speedup.
> Still, it might be worth to keep it separate to aid finding
> regressions when doing bisect search (if you are worried
> that it might possibly break something)

patch ok, maybe with a comment that the code is needed for slice based
threading only and doesnt do much good or bad otherwise

Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Dictatorship naturally arises out of democracy, and the most aggravated
form of tyranny and slavery out of the most extreme liberty. -- Plato
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