On Mon, 19 Nov 2001, Corvin Zahn wrote:
> How to grab a video picture with XVideo?
> ========================================
>
> I want to grab one image out of the video stream and store it to disk.
> In the documentation, I didn't find anything. Could someone give me a
> hint, where to look?
> Is there a XVideo-Interface defined? And what driver functions must be
> implemented?
> First I thought of PutStill, but the documentation says, this function
> could not be used for offscreen pixmaps, so no storing, hmmm..
>
There's no such interface. We discussed port-to-port operations
before where there were special ports that would represent file
descriptors, but it's alot of work an I'm not anything will happen
there. We've also discussed GetImage operations that were port->XvImage,
but again, there's no infrastructure for this. Basically Xv isn't
useful for much beyond copying stuff to and from windows and I'm
not sure it should be. Long term, OpenML needs to get implemented.
Mark.
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