[maemo-developers] [maemo-developers] Does camera in N800 support X11 Xv extension?

[From: koos vriezen]

2007/2/6, Daniel Stone <daniel.stone at nokia.com>:
> On Mon, Feb 05, 2007 at 11:17:48PM +0100, ext koos vriezen wrote:
> > 4 Feb 2007 19:47:02 +0100, Tim Teulings <rael at edge.ping.de>:
> > >Subject says it all:
> > >
> > >Does the camera in the N800 support the X11 Xv extension, that mean can
> > >I use this extension for displaying images of the camera or must I use
> > >v4l V2 (what about the V1 interface) or gstreamer?
> >
> > I did a small test, see code below. And it seem you must use the gstreamer
> > or
> > the v4l grabber unfortunately (lets hope the next version has XvPutVideo for
> > this device, or I made a mistake :-) ).
>
> Xv is not a nice API to use for retrieving video from the camera.

AFAIU, XvPutVidio leaves the CPU untouched. But I don't know if this is possible
at all no N800.

> Use
> V4L2 to get the video, and Xv, via Xv(Shm)PutImage, to send it.

Btw., although I have a XvPutVideo man page, XvPutImage is missing. Where
are the docs about these?

Thanks,
Koos
> Cheers,
> Daniel
>
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