[MacPorts] #21014: OpenCV 1.0.0 does not build on snow leopard

[MacPorts]

#21014: OpenCV 1.0.0 does not build on snow leopard
------------------------------------------+---------------------------------
 Reporter:  grundmann.matthias@…          |       Owner:  stante@…        
     Type:  defect                        |      Status:  new             
 Priority:  Normal                        |   Milestone:                  
Component:  ports                         |     Version:  1.8.0           
 Keywords:  LP64                          |        Port:  opencv          
------------------------------------------+---------------------------------

Comment(by njbutko@…):

 Here is a simple test program for gui+capture, call it TestCapture.cpp.
 The usage is "TestCapture [optional-path-to-video-file" -- it will either
 open a webcam and show you the video from that, or if you provide it with
 a video file, it will play back that video file for you.

 {{{
 /*
  *  TestCapture.cpp
  *  OpenCV
  *
  */



 #include <cv.h>
 #include <cxcore.h>
 #include <highgui.h>
 #include <iostream>


 using namespace std;

 const char  * WINDOW_NAME  = "Playback" ;

 int usingCamera;

 int main (int argc, char * const argv[])
 {
         int key=0;
         CvCapture* camera = NULL;

         if (argc < 2) {
                 cout << "Getting Camera " << CV_CAP_ANY << endl;
                 camera = cvCreateCameraCapture (CV_CAP_ANY);
                 usingCamera = 1;
         } else {
                 if (argv[1][0] == '-') {
                         cout << "An simple program to display a video or
 camera output." << endl << endl
                         << "Usage: " << endl << "    >> TestCapture
 [optional-path-to-movie-file]" << endl << endl
                         << "If no optional path to a movie file is
 provided, attempts to use an attached" << endl
                         << "    camera for input. Otherwise, attempts to
 use the movie file for input." << endl << endl;
                         return 0;
                 }
                 cout << "Getting Movie " << argv[1] << endl;
                 camera = cvCreateFileCapture(argv[1]);
                 usingCamera = 0;
         }

     if (! camera) {
                 cout << "Failed to get input from a video capture source."
 << endl << endl
                 << "Usage: " << endl << "    >> TestCapture [optional-
 path-to-movie-file]" << endl << endl
                 << "If no optional path to a movie file is provided,
 attempts to use an attached" << endl
                 << "    camera for input. Otherwise, attempts to use the
 movie file for input." << endl << endl;
                 return 0;
         }

     cvNamedWindow (WINDOW_NAME, CV_WINDOW_AUTOSIZE);

     IplImage *  current_frame = cvQueryFrame (camera);

         while (key != 'q' && key != 'Q') { //Loop until user enters 'q'


                 current_frame = cvQueryFrame (camera);

                 if (current_frame==NULL) { //implies reached camera end
                         cvSetCaptureProperty(camera,
 CV_CAP_PROP_POS_FRAMES, 0); //reset camera to beginning
                         current_frame = cvQueryFrame (camera) ;
                         if (current_frame==NULL) //shouldn't happen
                                 break;
                 }

                 cvShowImage(WINDOW_NAME, current_frame);
         }
         cvReleaseCapture(&camera);
         cvReleaseImage(&current_frame);
 }

 }}}

-- 
Ticket URL: <http://trac.macports.org/ticket/21014#comment:34>
MacPorts <http://www.macports.org/>
Ports system for Mac OS