[MPlayer-dev-eng] Xvideo Extension

[Amir Bukhari]

> -----Original Message-----
> From: mplayer-dev-eng-bounces at mplayerhq.hu [mailto:mplayer-dev-eng-
> bounces at mplayerhq.hu] On Behalf Of Sascha Sommer
> Sent: Friday, August 06, 2004 12:31 PM
> To: mplayer-dev-eng at mplayerhq.hu
> Subject: Re: [MPlayer-dev-eng] Xvideo Extension
> 
> > You could help with describing how you use Xvideo extension, because you
> > know it better than me. I would like to redirect all video operation to
> > that backing store pixmap, so that I receive damage events.
> 
> Well, Xvideo uses the overlay feature of the video cards to draw the video
> on
> the screen. That means most of the time the video is never converted, but
> stored in some yuvbuffer on the video card. This data is never merged with
> the screen data but gets converted, scaled and overlayed during the
> display
> process. 
>
OK this during display process, where it done? In Video Card or in Xvideo
Extension.

>Afaik there is no way to access this yuv data again from within X
> and no way in general to access the converted and scaled data.
> When used with colorkeying (it's the default afair) the video is only
> shown
> on the place where the screen has a certain color.
>
I have another Question. At the end it video should be drawn in a window,
which MPlayer created to display video. Is that right?
 
> I doubt it is easy to make Xvideo working with your desktop, cause it is a
> special technique to use hardware acceleration for video playback and all
> its advantages are gone when you blit to some backing store pixmap first.
> 
Sorry but it is my Desktop, I have joint this project as a developer. I said
that so they (LG3D owner) don't think I have stolen their Idea :-)

> 
> Sascha
> 
> 
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