[asterisk-dev] how to generate periodic wakeup signals for a channel driver ?

[Luigi Rizzo]

On Mon, Sep 17, 2007 at 03:51:35PM -0500, Tilghman Lesher wrote:
> On Monday 17 September 2007 15:03, Luigi Rizzo wrote:
> > sorry if the question is trivial...
> >
> > while adding videosupport to chan_oss/chan_alsa, which you can find at
> >
> >     http://svn.digium.com/view/asterisk/team/rizzo/video_v2/
> >
> > I just realised that the various video sources that I am using
> > (webcam using the 'gspca' driver, or X11 grabber) do not support
> > a select()/poll() interface, so i cannot rely on that (and on
> > ast_channel_set_fd() ) to wakeup the channel driver when data
> > is ready; I need a separate timing source.
> >
> > What are the options ? Right now I am [ab]using the audio source
> > to poll the video source, but audio too is not always available.
> 
> Why not use Zaptel for timing?

ENOZAPTEL here :)
(sure, i could use the fake device driver but if there is a more
generic and portable way i prefer that).

	cheers
	luigi