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

Tilghman Lesher tilghman at mail.jeffandtilghman.com
Mon Sep 17 15:51:35 CDT 2007

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?


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