[Ffmpeg-devel] libavcodec + IPP
Tue Nov 8 22:18:17 CET 2005
On Tue, Nov 08, 2005 at 09:36:56PM +0100, Matthias Wieser wrote:
> Am Dienstag, 8. November 2005 13:45 schrieb Bj?rn Ard?:
> > Hi,
> > We have done some performance tests with libavcodec on an intel pentium
> > 4 CPU uncompressing a mpeg 2 video stream.
> > We noticed that we could replace the idct algoritm with the
> > corresponding IPP function. This increased the performance by about 10%
> > compared to the MMX2 version in libavcodec (FF_IDCT_LIBMPEG2MMX).
> Is it faster on an Athlon, too?
ill bet they check for athlon and disable all optimizations then, its
intel after all ;)
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