[FFmpeg-devel] [PATCH] VP8 decoder

[Reimar Döffinger]

On Sun, Jun 27, 2010 at 09:35:50PM +0100, M?ns Rullg?rd wrote:
> Carl Eugen Hoyos <cehoyos at ag.or.at> writes:
> 
> > David Conrad <lessen42 <at> gmail.com> writes:
> >
> >> I meant 40-50% faster than libvpx without any SIMD; with SIMD it's ~2x faster
> >> than we are right now.
> >
> > (Since "without any SIMD" is still not totally clear imo.)
> > On my Core 2 Duo with the Opensuse package libvpx 0.9.0-13.1,
> 
> Was that built with SIMD?  IIRC enabling SIMD in libvpx requires a bit
> of build-time voodoo the packagers may well have missed.
> 
> > ffmpeg -vcodec libvpx -i big_buck_bunny_480p.webm decodes twice as
> > fast as with the native decoder.
> 
> Native with our without SIMD, i.e. which svn revision?

I have the same numbers for libvpx with SIMD against native with SIMD,
it seems the pure C loop filter takes _a lot_ of time.
However, if you try e.g. on PPC, our native decoder is a lot faster
(since both use pure C there it seems).