[Openchrome-users] XvMC status

[Stéphane Konstantaropoulos]

Le mercredi 09 ao?t 2006 16:52, Thomas Hellstr?m a ?crit?:
> St?phane Konstantaropoulos wrote:
> >Hi All,
> >
> >I got a laptop with a VIA C7 and a PN800 in it, I was wondering what was
> > the status of the XvMC for such a chip?
>
> mpeg 1 and 2 should be working like a charm.
>
> >(I am using the latest driver from kelkoo on Fedora Core 5)
> >
> >mpeg2 seems to work fine so far, I need to use XvNODMA however, otherwise
> > the cursor area becomes funny and most fonts change colour.
>
> Strange. Very strange. What acceleration architecture are you using?
> EXA / XAA?
>

EXA is that not better?

> >What's the status of MPEG4?
>
> Not available.
>
> >What does XVMC_VLD bring that XVMC_MPEG2 doesn't?
>
> XVMC_VLD is an acceleration level, like XVMC_MOCOMP or XVMC_IDCT.
> XVMC_MPEG2 is a format, like XVMC_MPEG1, XVMC_MPEG4 etc...
>
> >I'd be interested into hacking the driver to try and get MPEG4 and H263 to
> >work. Is there any specifications / documentation for the chip internals
> >somewhere?
>
> Only VIA's VEXP together with libddmpeg.so which has to be reverse
> engineered.
>
> >Is there any XvMC implementation of XVMC_MPEG4 and / or XVMC_H263 around
> > at all? (even for other cards, to get some inspiration).
>
> Nope.
>
> >Thanks
>
> Thomas
>

Thanks for helping

-- 
St?phane Konstantaropoulos <skonstant at sgul.ac.uk>
-- Web Developer - Computing Services
--- St George's University of London
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