[MPlayer-dev-eng] SIMPLE_IDCT

[Falk Hueffner]

Hi,

Michael Niedermayer <michaelni at gmx.at> writes:
> On Sunday 13 January 2002 01:08, Falk Hueffner wrote:
> > Michael Niedermayer <michaelni at gmx.at> writes:
> > > On Saturday 12 January 2002 23:55, Falk Hueffner wrote:
> > > > mplayer unconditionally defines SIMPLE_IDCT for ffmpeg, but it's a
> > > > major loss on Alpha, and I'd guess also for any other platform than
> > >
> > > the others are buggy, they cause horizontal or vertical stripes in
> > > msmpeg4 at least
> >
> > Really? I didn't notice that yet. Is it perhaps only for the MMX
> > version? Do you have a sample with m5sums of right and wrong frames?
>
> mplayerhq.hu/MPlayer/samples/ffmpeg-bugs/HorizontalStripesDivX.avi

Hmm, I can't see any stripes in it. So the bug doesn't seem to be
present in the C version (jrevct.c). Unfortunately, I have no MMX
machine to compare.

        Falk