Example: hwdrivers_capture_video_dc1394

C++ example source code:

/* +------------------------------------------------------------------------+
   |                     Mobile Robot Programming Toolkit (MRPT)            |
   |                          https://www.mrpt.org/                         |
   |                                                                        |
   | Copyright (c) 2005-2024, Individual contributors, see AUTHORS file     |
   | See: https://www.mrpt.org/Authors - All rights reserved.               |
   | Released under BSD License. See: https://www.mrpt.org/License          |
   +------------------------------------------------------------------------+ */

#include <mrpt/gui/CDisplayWindow.h>
#include <mrpt/hwdrivers/CImageGrabber_dc1394.h>
#include <mrpt/system/CTicTac.h>

#include <iostream>

using namespace mrpt::hwdrivers;
using namespace mrpt::gui;
using namespace mrpt::obs;
using namespace mrpt::system;
using namespace std;

//#define DO_CAPTURE        1
#define DO_CAPTURE 0

// ------------------------------------------------------
//              TestCapture
// ------------------------------------------------------

void TestCapture_1394()
{
  TCaptureOptions_dc1394 options;

  uint64_t cameraGUID = 0;
  uint16_t cameraUnit = 0;

  options.frame_width = 1024;  // 640;
  options.frame_height = 768;  // 480;
  options.color_coding = COLOR_CODING_YUV422;

  // Other capture options:
  // options.shutter = 900;

  // For stereo Bumblebee tests/debugging (Use the Bumblebee class in
  // mrpt::vision instead!)
  //    options.mode7 = 3;
  //    options.deinterlace_stereo = true;

  CImageGrabber_dc1394 capture(cameraGUID, cameraUnit, options, true /* Verbose */);

  CTicTac tictac;

  cout << "Press any key to stop capture to 'capture.rawlog'..." << endl;

#if DO_CAPTURE
  CFileGZOutputStream fil("./capture.rawlog");
#endif

  CDisplayWindow win("Capturing...");

  int cnt = 0;

  while (!mrpt::system::os::kbhit())
  {
    if ((cnt++ % 10) == 0)
    {
      if (cnt > 0)
      {
        double t = tictac.Tac();
        double FPS = 10 / t;
        printf("\n %f FPS\n", FPS);

        // Other capture options:
        // options.shutter = cnt + 1;
        // capture.changeCaptureOptions(options);
      }
      tictac.Tic();
    }

    CObservationImage::Ptr obs = CObservationImage::Create();  // Memory will be
    // freed by
    // SF destructor in each
    // loop.
    if (!capture.getObservation(*obs))
    {
      cerr << "Error retrieving images!" << endl;
      break;
    }

#if DO_CAPTURE
    fil << obs;
#endif
    cout << ".";
    cout.flush();
    if (win.isOpen()) win.showImage(obs->image);
  }
}

int main(int argc, char** argv)
{
  try
  {
    TestCapture_1394();

    return 0;
  }
  catch (const std::exception& e)
  {
    std::cerr << "MRPT error: " << mrpt::exception_to_str(e) << std::endl;
    return -1;
  }
  catch (...)
  {
    printf("Another exception!!");
    return -1;
  }
}