Re: How to detect USB camera disconnection?
- Date: Fri, 21 Aug 2009 10:39:25 +0200
- From: Jean-Francois Moine <moinejf@xxxxxxx>
- Subject: Re: How to detect USB camera disconnection?
On Thu, 20 Aug 2009 13:54:26 -0300
"Nilo Roberto C Paim" <nilopaim@xxxxxxxxx> wrote:
> I've a Vimicro USB cam that I'm constantly pooling for taking
> snapshots using an application made by me. How can I programmatically
> detect when the cam is disconnected?
> It seems to me that V4L "thinks" that the cam is still there, even
> with the cable disconnected.
> --- > I'd forgot to say: the driver I'm using is gspca, last
> version. Works like a charm. My problem is related to cable's cam
I don't know how you poll. Normally, when the webcam is disconnected,
the I/O calls should fail with errno = NODEV.
Ken ar c'hentañ | ** Breizh ha Linux atav! **
Jef | http://moinejf.free.fr/
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