[Playerstage-users] Cannot get image from camerav4l

[Nicola B. <nb...@es...>]

Hi all,

I was trying to get an image from my Logitech Quickcam, but when I call 
CameraProxy::Print() I always have the same:

#Camera(40:0) - r
Height(0 px), Width(0 px), Depth(0 bit), ImageSize(0 bytes)

I'm sure the webcam is set properly because I use it with many other 
applications and also with OpenCV, so the problem is on my code or the player 
libraries. Below there are a simple configuration file I use and a small test 
program. Any help is appreciated.

Cheers,

Nicola

----------------------------

# configuration file to test camera
driver
(
  name "camerav4l"
  provides ["camera:0"]
  port "/dev/video0"
  source 0
  size [160 120]
  mode "YUV420P"
)

----------------------------

// test program

#include <iostream>
#include <cstdlib>
#include <playerclient.h>
#include <stdlib.h>

int main(int argc, char *argv[])
{
   PlayerClient robot("localhost");
   CameraProxy cp(&robot,0,'r');

   robot.Read();
   
   cp.Print();

   robot.Read();

   char something;
   std::cin >> something;   
   
   cp.Print();

   return EXIT_SUCCESS;
}



-- 
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Nicola Bellotto
University of Essex
Department of Computer Science
Wivenhoe Park
Colchester CO4 3SQ
United Kingdom

Room: 1N1.2.8
Tel. +44 (0)1206 874094
URL: http://privatewww.essex.ac.uk/~nbello
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