Re: Re: V4L2 Support

Hi Olivier.

I was my fault (what else - never thought anything else ;) ).
LD_LIBRARY_PATH was set to the old compiled version of the OpenCV libs 
so it couldn't work - now camshiftdemo is working fine.
Just a last question: cvcam didn't build, I mean it hasn't been included 
in "make". If I run "make" in opencv/otherlibs" it doesn't build too. 
But for my program I need the cvcam-lib, so how to build it? As said: 
from "normal" 'configure + make + make install' cvcam is not build and 
installed. Have I overseen something?

Thx a lot again for your help and your patience! You do a great work at all!
Regards, Matthias
---
> Hi Matthias,
>
> > >  Is in your config "Use v4l2" set to yes ?
> >
> > "Use v4l2" is set to yes on compilation, so this seems not to be the
> > problem.
>
> So, it's ok.
>
> > I'm using a "Logitech Quickcam 5000 Pro" with the linux-uvc driver
> > from http://linux-uvc.berlios.de/ which supports v4l2 only.
>
> I have for different cams:
>   1. Logitech QuickCam 5000 Pro
>   2. Logitech QuickCam for Notebooks Pro (new version)
>   3. Logitech QuickCam Fusion
>   4. Logitech QuickCam for Notebooks Pro (old version)
> Cams 1, 2 and 3 are working with linux-uvc, and cam 4 with pwc
> (http://www.saillard.org/linux/pwc/). 
> <http://www.saillard.org/linux/pwc/%29.>
>
> All are working with OpenCV. I have just tested camshiftdemo C sample
> and the cam-histo.py Python sample. All cams are working with them.
> Sometime, with linux-uvc, I have errors like:
>   VIDIOC_QUERYCTRL: Input/output error
> or
>   HIGHGUI ERROR: V4L2: Unable to set palette.
> when starting the application, but re-starting the demo corrects the
> problem.
>
> > There's a test program named "uvcview" available on
> > http://mxhaard.free.fr/spca50x/Investigation/uvc and with this program
> > the cam works fine.
>
> Yes. I have used it also when I have patched OpenCV for supporting
> linux-uvc.
>
> > When compiling swig, python and quicktime are set to no, the others to
> > yes. But I don't think that's the problem...
>
> No. I have swig and Python, but not quicktime.
> (I'm using almost only Python with OpenCV, but this is another thing ;-)
> )
>
> > Error output is little (telling that /dev/video0 could not be
> > initiated or something as I remember, don't rely on me), I can send it
> > today afternoon (about 5:00pm GMT) when I'm at home again.
>
> Thanks in advance. Please try to start many times the application to see
> if this is a possible work-around.
>
> Hope this help.
>
>         Olivier
> -- 
> Olivier Bornet, IDIAP, CP 592, CH-1920 Martigny
> http://www.idiap.ch/~bornet/ <http://www.idiap.ch/%7Ebornet/>
> http://www.idiap.ch/~bornet/pgp/ <http://www.idiap.ch/%7Ebornet/pgp/>
> PGP-key: 0xC53D9218
>
>
> [Non-text portions of this message have been removed]
>
>
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