Re: [Linux-uvc-devel] V4L1 backwards compatibility

[michel X. <mx...@ma...>]

Le Samedi 4 Février 2006 22:47, Mikael Nilsson a écrit :
> lör 2006-02-04 klockan 21:16 +0100 skrev Mikael Nilsson:
> > Hi!
> >
> > I wonder: what is the reason that the v4l1 backwards compatibility
> > module (videodev) does not seem to work with the uvc driver? What would
> > be required to get it to work?
> >
> > Background: I'm forced to use a proprietary videoconf app that only
> > supports v4l1 at the moment. And it does not work with my cam,
> > unfortunately.
> >
> > I've talked to a technician and he told me that v4l2 is not a priority
> > at the moment, and "I was under the impression that V4L2 was supposed to
> > be backwards compatible with V4L, but it appears this is not the case."
> >
> > Well, the videodev module *does* exist, so why doesn't it work?
>
> Specifically, dmegs shows:
>
> usbvideo: Unknown ioctl 0x803c7601
>
> 0x803c7601 is VIDIOCGCAP, and that seems to be handled by v4l1-compat.c,
> which is in videodev, which is loaded according to lsmod. So why is that
> not handled???
>
> /Mikael
Mikael
This driver design is v4l2 only . The v4L1 compat only works for old driver to 
the new interface, but a young driver, like uvcvideo works directly on v4l2.
-- 
Michel Xhaard
http://mxhaard.free.fr