[Openchrome-users] Re : CX700 / EX10000

[manu]

Le 18.04.2007 01:55:40, Claas Langbehn a ?crit?:
> David Shay schrieb:
> >
> >
> > On 4/17/07, *Xavier Bachelot* <xavier at bachelot.org
> > <mailto:xavier at bachelot.org>> wrote:
> >
> >     David Shay wrote:
> >
> >     > Bump for any help on original problem.  Also, Just a quick
> survey --
> >     > does anyone out there have a CX700 and is currently getting
> >     accelerated
> >     > HD for mpeg2?
> >
> >     It's unlikely anyone has CX700 doing mpeg2 hardware
> acceleration,
> >     because we now know it uses a new engine, which is currently not
> >     supported.
> >
> >
> > OK. When did the group find that out?  Someone over on the forums at
> 
> > viaarena.com <http://viaarena.com/> called "zoo" claims that he is
> > using the openchrome drivers and getting hardware acceleration.
> He said: "Mplayer uses xv and hardware zooming works, too."
> This is what I saw, too. Zooming does not have any impact on the CPU
> load.
> I don't know if and how hardware accelleration and hardware zoom are
> related.
> 
> > It makes me feel a little better that this isn't my own
> incompetence,
> > but rather that it doesn't work just yet.
> I'm not sure.
> If the playing movies with "720x480 at 22% and 1280x720 at 30-50%" is
> not using hw acceleration on CX700 yet,
> then I am really keen on seing that to come.

hardware zooming (and color conversion), which is the Xv thing, is only  
part of the story. XvMC VLD is the full MPEG-2 decoding which allmost  
completely offloads the CPU during movie playback (well mpeg2 movies,  
like dvds). This does not work ATM (any status on how far we are from  
that??).
moreover it seems that the cx700 is able to decode at least partially  
mpeg4 and perhaps h264??
In any case you will get much lower cpu usage when this is working.
Bye
Manu


	

	
		
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