Visual Servoing Platform  version 3.4.0
manGrabV4l2.cpp

Images grabbing example with the vpV4l2Grabber class.

/****************************************************************************
*
* ViSP, open source Visual Servoing Platform software.
* Copyright (C) 2005 - 2019 by Inria. All rights reserved.
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* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
* See the file LICENSE.txt at the root directory of this source
* distribution for additional information about the GNU GPL.
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* For using ViSP with software that can not be combined with the GNU
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* Edition License.
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*
* This software was developed at:
* Inria Rennes - Bretagne Atlantique
* Campus Universitaire de Beaulieu
* 35042 Rennes Cedex
* France
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* Inria at visp@inria.fr
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* This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
* WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
* Description:
* Images grabbing example.
*
* Authors:
* Anthony Saunier
* Fabien Spindler
*
*****************************************************************************/
#include <visp3/core/vpImage.h>
#include <visp3/sensor/vpV4l2Grabber.h>
int main()
{
try {
vpImage<unsigned char> I; // Grey level image
#ifdef VISP_HAVE_V4L2
g.setInput(2); // Input 2 on the board
g.setWidth(768); // Acquired images are 768 width
g.setHeight(576); // Acquired images are 576 height
g.setNBuffers(3); // 3 ring buffers to ensure real-time acquisition
g.open(I); // Open the grabber
for (;;)
g.acquire(I); // Acquire a 768x576 grey image
#endif
return EXIT_SUCCESS;
} catch (const vpException &e) {
std::cout << "Catch an exception: " << e << std::endl;
return EXIT_FAILURE;
}
}