ExampleMDCamToShm.cpp

Example for using the MDCam object for multiple DCams and writing to shared memory , MDcam

Author

MIP

/*
This file is part of the BIAS library (Basic ImageAlgorithmS).

Copyright (C) 2003-2009    (see file CONTACT for details)
  Multimediale Systeme der Informationsverarbeitung
  Institut fuer Informatik
  Christian-Albrechts-Universitaet Kiel


BIAS is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.

BIAS is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License
along with BIAS; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/


/** @example ExampleMDCamToShm.cpp
    @relates VideoShMFeeder, MDcam
    @ingroup g_examples
    @ingroup g_videosource
    @brief  Example for using the MDCam object for multiple DCams and writing to shared memory
    @author MIP
*/

#include <iostream>
#include <fstream>
#include <signal.h>

#include <Utils/Param.hh>

#include <VideoSource/VideoShMFeeder.hh>
#include <VideoSource/VideoSource_MDcam.hh>

using namespace BIAS;
using namespace std;

bool NotDone = true;


void termhandler(int /*signal*/)
{
  cout <<"caught Ctrl-C, exiting gfracefully"<<endl;
  NotDone = false;
}


int main(int argc, char *argv[])
{

  Param params;


  VideoSource_MDcam cams;
  int numcams;
  //bool done = false;
  //int downsample;
  //char c = 0;
  Camera<unsigned char> *GrabImage;
  Camera<unsigned char> pic2;
  int res;
  vector<string> ShmNames;
  string *camfile;
  string *ShmPrefix;
  int *scanbus;
  vector<VideoShMFeeder *> ShmFeeder;



  camfile = params.AddParamString("cameras",
                  "Configuration file (default: cameras.conf",
                  "cameras.conf");
  ShmPrefix = params.AddParamString("ShmPrefix",
                  "Prefix to address Shm, Camid is added",
                  "MDCamShm");
  scanbus = params.AddParamInt("scanbus",
                   "Only scan the bus number N and write camerafile",-1);


  res = params.ParseCommandLine(argc, argv);
  if (res <0) exit(1);



  if (*scanbus >=0) {
    ofstream ofs(camfile->c_str());
    if (!ofs) {
      perror(camfile->c_str());
      exit(1);
    }
    cams.ScanBus(ofs);
    ofs.close();
    exit(0);
  }

  cams.SetFps(7.5);
   cams.SetDebugLevel(D_MDCAM_INIT );
  cams.SetDebugLevelDcam(D_DCAM_F7 |D_DCAM );

  numcams = cams.InitCameras(*camfile);
  cout << "Number of cams: " << numcams << endl;
  if (numcams <0) exit(0);

  GrabImage = new Camera<unsigned char>[numcams];
  for (int i=0; i<numcams; i++) {
    cams.GetCamera(i)->InitImage(GrabImage[i]);
    ostringstream oss;
    oss<<*ShmPrefix<<"-"<<cams.GetCamera(i)->GetID();
    ShmNames.push_back(oss.str());
    oss.str("");
    cout <<"Using: "<<ShmNames[i]<<endl;
    VideoShMFeeder *s;
    s = new VideoShMFeeder(ShmNames[i]);
    ShmFeeder.push_back(s);
  }

  cams.PreGrab();

  // mainloop with show

  signal(3,termhandler);

  cout <<"Press Ctrl-\\ to exit"<<endl;
  int framecount = 0;
  while (NotDone) {
//      gettimeofday(&now, NULL);
//      end = start;
//      start =  (now.tv_sec % 1000) * 1000 + (now.tv_usec / 1000);
//      fps = 1.0 / (float)(start-end) * 1000.0 ;

    cams.GrabSingle(GrabImage);
    for (int i=0; i<numcams; i++) {
      ShmFeeder[i]->ProcessImage(&(GrabImage[i]));
    }
    cout <<framecount++<<endl;
  }


  cams.PostGrab();
  cams.ReleaseCameras();
  for (unsigned int i=0;i<ShmFeeder.size(); i++)
    delete ShmFeeder[i];
  params.DisableDestructorWarning();
  return 0;
}