On 10/28/2009 02:51 PM, Alexey Fisher wrote:
Am Mittwoch, den 28.10.2009, 14:40 +0100 schrieb Laurent Pinchart:
On Wednesday 28 October 2009 14:36:33 Alexey Fisher wrote:
Hi Laurent,
Am Mittwoch, den 28.10.2009, 13:52 +0100 schrieb Laurent Pinchart:
Hi Alexey,
On Wednesday 28 October 2009 10:58:24 Alexey Fisher wrote:
Am Mittwoch, den 28.10.2009, 00:27 +0100 schrieb Laurent Pinchart:
On Monday 26 October 2009 15:06:41 Hans de Goede wrote:
On 10/26/2009 12:52 PM, Alexey Fisher wrote:
Am Sonntag, den 25.10.2009, 14:21 +0100 schrieb Hans de Goede:
[snip]
fwiw I'm a v4l kernel developer, but I'm not involved in the
UVC driver, I'm however a contributor to cheese, I thought that
my input that cheese would give up even if the driver has a
long enough timeout would be helpful.
To try and see if this (the cheese timeout is the issue), you
will need to re-compile cheese from source, after unpacking
cheese, edit src/cheese-webcam.c and goto line 716 (in 2.28.0)
And change the "10 * GST_SECOND" there in something bigger. I
also see that I'm mistaken and the timeout in cheese is not 3
but 10 seconds, it might have changed recently, or my memory
has been playing tricks on me.
I still believe this might be the cause, the trace you have
posted seems consistent with cheese's behaviour. Also noticed
that there never is a successfull DQBUF the first time cheese
opens the device. If cheese (or rather gstreamer) does not
manage to DQBUF the first time, then cheese will not work with
the device. There is a limitation in gstreamer (or maybe in the
way cheese uses it) where gstreamer needs to be streaming
before cheese can tell the properties of the cam. If the stream
does not start within the first 10 seconds, then cheese will
fail to get the properties.
If you go to cheese's edit -> preferences menu, and your cam
has no resolutions listed there (the resolution drop down is
grayed out). This is what is happening.
As for empathy, I'm not familiar with that. But if we can get
cheese to work first I'm sure that that would be a good step in
the right direction.
Hallo Hans,
thank you for your constructive response,
I increased timeout to 15 seconds i now i can't reproduce camera
freeze, i'll play with it more to be sure. There is still one
issue with it - on cold start the image is zoomed in.
I need to close cheese and open it again to get normal zoom. The
resolution seems to be the same.
Zoomed in ? Really ? As far as I know the QuickCam Pro for Notebooks
has no optical or digital zoom. Could you please send me lsusb's
output for your device ?
Yes. I can use digital zoom under M$Win with Logitech software.
That's probably implemented in software in the Windows driver.
[snip]
The zoom control, if present, should have appeared here.
As your camera doesn't expose any zoom control I really don't know where
the zoom comes from.
i don't really care about zoom problem. This not making this webcam
freeze so probably nobody will find this issue. You can sleep well :)
if you have some ideas about camera freeze, please let me know.
You have been able to work around the freeze by raising cheese's timeout to 15
seconds, right ?
yes
Talking about this, can you please file a bug against upstream cheese to
change the timeout to be 15 seconds ?
Regards,
Hans
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