Re: Re: V4L2 Support

Hi Matthias,

> Thx for answering - I checked out opencv and built it successfully.
> How can I access the cam using v4l2? Just with cvCaptureFromCAM()?

Yes. And OpenCV will select V4L2 if it is available. Do you have look at
the selected configuration at the end of the ./configure step ? You
should have something like:

  Configuration:
      Compiler:                 g++
      CXXFLAGS:                 -Wall -fno-rtti -pipe -O3 -DNDEBUG -g 
-march=i686 -ffast-math -fomit-frame-pointer 

      Install path:             /com/softs/opencv-cvs/cvs-dev-i686

      Use gtk+ 2.x:             yes
      Use threaded HighGUI      yes
      Use libjpeg:              yes
      Use zlib:                 yes
      Use libpng:               yes
      Use libtiff:              yes
      Use ffmpeg:               yes
      Use dc1394 & raw1394:     yes
      Use v4l:                  yes
      Use v4l2:                 yes
      Use QuickTime:            no

      Build wrappers for
      - Python                  yes
      SWIG is at                /usr/bin/swig -c++

      Build demo apps           yes

  Now run make ...

Is in your config "Use v4l2" set to yes ?

> The sample program "camshiftdemo" doesn't work...

It's working here, with both a V4L1 and a V4L2 device.
Have you some errors printed out ?

Have a nice day.

        Olivier
-- 
Olivier Bornet, IDIAP, CP 592, CH-1920 Martigny
http://www.idiap.ch/~bornet/
http://www.idiap.ch/~bornet/pgp/
PGP-key: 0xC53D9218


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