[MPlayer-dev-eng] [PATCH] PowerPC ffmpeg fixes

Magnus Damm damm at opensource.se
Mon May 12 13:47:12 CEST 2003


Here's the problem:

If I pass --enable-altivec to ./configure, divx is broken and mpeg2 is slow.
So I made the accelerated libmpeg2 patch which improves performance but
that does not help me with the broken divx output. 
Nothing has been done since March and probably all PowerPC users that use
a Altivec-enabled mplayer on their Altivec-machines have experienced bad
video output when they wanted to watch divx. 

So I tried to figure out what was wrong, but I don't have enough time. 
I have gone through each function and seen how commenting it out
affects the quality. The patch comments out the broken functions.
I thought that the authours could do the long-term fix.

If I have to choose between working non-accelerated divx playback
(that eats much less cpu than accelerated mpeg2 playback) and
broken accelerated playback, I know what I choose.

I would be really happy to be able to watch DVD and divx with
the same binary...

But you are right - a long-term solution must be made.

/ magnus

On Mon, 12 May 2003 12:59:37 +0200
Alex Beregszaszi <alex at fsn.hu> wrote:

> Hi,
> this hasn't got much sense, please fix the possible bugs instead
> commenting
> the whole optimization codes out!
> You've disabled the altivec-enabled idct code too, thats bad!
> -- 
> Alex Beregszaszi <alex at fsn.hu>
> (MPlayer Core Developer -- http://www.mplayerhq.hu/)
> _______________________________________________
> MPlayer-dev-eng mailing list
> MPlayer-dev-eng at mplayerhq.hu
> http://mplayerhq.hu/mailman/listinfo/mplayer-dev-eng

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