ViSP
manGrabDirectShow.cpp
1 /****************************************************************************
2  *
3  * $Id: manGrabDirectShow.cpp 4574 2014-01-09 08:48:51Z fspindle $
4  *
5  * This file is part of the ViSP software.
6  * Copyright (C) 2005 - 2014 by INRIA. All rights reserved.
7  *
8  * This software is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU General Public License
10  * ("GPL") version 2 as published by the Free Software Foundation.
11  * See the file LICENSE.txt at the root directory of this source
12  * distribution for additional information about the GNU GPL.
13  *
14  * For using ViSP with software that can not be combined with the GNU
15  * GPL, please contact INRIA about acquiring a ViSP Professional
16  * Edition License.
17  *
18  * See http://www.irisa.fr/lagadic/visp/visp.html for more information.
19  *
20  * This software was developed at:
21  * INRIA Rennes - Bretagne Atlantique
22  * Campus Universitaire de Beaulieu
23  * 35042 Rennes Cedex
24  * France
25  * http://www.irisa.fr/lagadic
26  *
27  * If you have questions regarding the use of this file, please contact
28  * INRIA at visp@inria.fr
29  *
30  * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
31  * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
32  *
33  *
34  * Description:
35  * Images grabbing example.
36  *
37  * Authors:
38  * Anthony Saunier
39  * Fabien Spindler
40  *
41  *****************************************************************************/
55 #include <visp/vpConfig.h>
56 
57 #include <visp/vpImage.h>
58 #include <visp/vpDirectShowGrabber.h>
59 
60 int main()
61 {
62  try {
63  vpImage<unsigned char> I; // Grey level image
64 
65 #ifdef VISP_HAVE_DIRECTSHOW
66  vpDirectShowGrabber g; // Create the grabber
67  if(g.getDeviceNumber() == 0) //test if a camera is connected
68  {
69  g.close();
70  return -1;
71  }
72 
73  g.open(); // Initialize the grabber
74 
75  g.setImageSize(640,480); // If the camera supports 640x480 image size
76  g.setFramerate(30); // If the camera supports 30fps framerate
77 
78  for ( ; ; )
79  g.acquire(I); // Acquire an image
80 #endif
81 
82  return 0;
83  }
84  catch(vpException e) {
85  std::cout << "Catch an exception: " << e << std::endl;
86  return 1;
87  }
88 
89 }
error that can be emited by ViSP classes.
Definition: vpException.h:76
class for windows direct show devices
bool setFramerate(double framerate)
void acquire(vpImage< unsigned char > &I)
bool setImageSize(unsigned int width, unsigned int height)
unsigned int getDeviceNumber()