[Ffmpeg-devel] [PATCH] fix mpegaudiodec on ARM and benchmark

Guillaume POIRIER poirierg
Wed Sep 13 10:50:40 CEST 2006


On 9/12/06, Siarhei Siamashka <siarhei.siamashka at gmail.com> wrote:
> On Thursday 24 August 2006 11:30, Guillaume Poirier wrote:
> > Siarhei Siamashka wrote:
> >
> > > But anyway I'm glad that at least somebody else is interested in arm
> > > optimizations. I checked ffmpeg commit log and did not see much arm
> > > related changes recently, so was not so optimistic. Well, let's make
> > > ffmpeg faster on this platform :)
> >
> > For what it's worth, there's a forked version of MPlayer for Zaurus
> > which is supposed to be faster on ARM.
> > The author doesn't seem to be receptive to request to send his
> > contributions back as patches, but his fork is available here
> > http://atty.skr.jp/WebSVN/listing.php?repname=mplayer-w100&path=%2Ftrunk%2F
> >&rev=0&sc=1
> >
> > Some of the improvement involve using IPP, others to use inline asm.
> Thanks I also checked this code. As far as I understand it, most of the
> improvements from this forked version are already included into ffmpeg
> (revision 4311). The things that are left are some Zaurus specific video
> drivers and patches for libmpeg2 code.

Please do double check. I'm not 100% sure, but last time I checked the
changelog showed that he had re-written some calls to IPP with
hand-written asm routines.

I have send a patch some time ago which contained the differences
between current code in FFmpeg and the one in mplayer-w100 and AFAIR,
there were some unmerged code.

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