Visual Servoing Platform version 3.5.0
manGrabV4l2.cpp
1/****************************************************************************
2 *
3 * ViSP, open source Visual Servoing Platform software.
4 * Copyright (C) 2005 - 2019 by Inria. All rights reserved.
5 *
6 * This software is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 * See the file LICENSE.txt at the root directory of this source
11 * distribution for additional information about the GNU GPL.
12 *
13 * For using ViSP with software that can not be combined with the GNU
14 * GPL, please contact Inria about acquiring a ViSP Professional
15 * Edition License.
16 *
17 * See http://visp.inria.fr for more information.
18 *
19 * This software was developed at:
20 * Inria Rennes - Bretagne Atlantique
21 * Campus Universitaire de Beaulieu
22 * 35042 Rennes Cedex
23 * France
24 *
25 * If you have questions regarding the use of this file, please contact
26 * Inria at visp@inria.fr
27 *
28 * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
29 * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
30 *
31 * Description:
32 * Images grabbing example.
33 *
34 * Authors:
35 * Anthony Saunier
36 * Fabien Spindler
37 *
38 *****************************************************************************/
52#include <visp3/core/vpImage.h>
53#include <visp3/sensor/vpV4l2Grabber.h>
54
55int main()
56{
57 try {
58 vpImage<unsigned char> I; // Grey level image
59
60#ifdef VISP_HAVE_V4L2
62 g.setInput(2); // Input 2 on the board
63 g.setWidth(768); // Acquired images are 768 width
64 g.setHeight(576); // Acquired images are 576 height
65 g.setNBuffers(3); // 3 ring buffers to ensure real-time acquisition
66 g.open(I); // Open the grabber
67 for (;;)
68 g.acquire(I); // Acquire a 768x576 grey image
69#endif
70
71 return EXIT_SUCCESS;
72 } catch (const vpException &e) {
73 std::cout << "Catch an exception: " << e << std::endl;
74 return EXIT_FAILURE;
75 }
76}
error that can be emited by ViSP classes.
Definition: vpException.h:72
Class that is a wrapper over the Video4Linux2 (V4L2) driver.
void setWidth(unsigned w)
void setInput(unsigned input=vpV4l2Grabber::DEFAULT_INPUT)
void open(vpImage< unsigned char > &I)
void setHeight(unsigned h)
void setNBuffers(unsigned nbuffers)
void acquire(vpImage< unsigned char > &I)