Luc Saillard wrote:
On Fri, Nov 04, 2005 at 10:49:27AM +0000, Hugo Filipe Costelha De Castro wrote:
Hi,
I am using a Philips Toucam Pro 740k.
I see I can set the shutter speed using v4l2 control call and
V4L2_CID_EXPOSURE. But how can I set the shutter to automatic? Usually we
would use the value -1 for automatic setting, but according to pwc-v4l.c,
the minimum value of V4L2_CID_EXPOSURE is 1.
Ok, if i accept 0 as a value for automatic shutter speed, how every webcam
will react ? Perhaps i need to create a new (private) control to setup the
automatic gain. What do you think ?
I guess the question is what do other drivers use for auto-shutter? 0
seems like a sensible choice, after all why else would you be setting a
zero exposure.
--
Ivor
http://www.ivor.it
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