I've been unable to find much info on Xv. I found "The XFree86 XVideo
Extension (Xv) Device Dependent Layer", which describes the internal
implementation of Xv in X, but I haven't found anything on how to use it. Is
there a document on it somewhere, and/or a .h file? I grep'd for "Xv" in all
the X headers I have and did not find anything.
Is there support for Xv in the Video4Linux drivers? That is, if I have an ATI
card with Xv supported, can I run (for example) a bttv-based capture card, and
have the video be DMA'd directly to YUV-format buffers in the X server (or in
shared memory), so that YUV video is being done with little or no host CPU
overhead? Is this what "PutVideo" is supposed to do. I assume to do so the ATI
card has some sort of "overlay" support and explicit support for YUV / YCbCr
format.
Thanks in advance for any information you can give me.
Peter Kaczowka
On Wed, 05 Jul 2000, bharat tewari wrote:
> hi dwayne
> i am using the XvImages() support i.e XvGetImage() and XvPutImage() in my
> application with the xfree 4.0 server and the modified ati driver which
> supports Xv and i am able to get everything setup and working, i havent
> tried the PutVideo() etc. so if you are looking for that i cant be of much
> help but for what i have done its working for me.
> regds
> bharat
>
> >
> > hi,
> >
> > I posted here a couple of months back about XVideo in XFree 4.0.0 and
> > was told it was broken.
> >
> > Since the changes list unspecified XVideo fixes in XFree 4.0.1,
> > I was wondering if anyone who actually knows how to use it has
> > tried it out yet.
> >
> > Thanks for any info,
> >
> > Dwayne
> >
> >
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>
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