FLLiveSourceTest.cpp

Go to the documentation of this file.

/* ---------------------------------------------------------------------------
    Phission : 
        Realtime Vision Processing System
    
    Copyright (C) 2003 Philip D.S. Thoren (pthoren@cs.uml.edu)
    University of Massachusetts at Lowell,
    Laboratory for Artificial Intelligence and Robotics
    
    This file is part of Phission.

 ---------------------------------------------------------------------------*/
#include <FLLiveSourceTest.h>
#include <phission.h>

/* ------------------------------------------------------------------------ */
void usage()
{
    printf("\n\nUsage:\n",argv[0]);
    printf("\t--help\t\t\tdisplay usage\n");
    printf("\t--test <value>\tsleep 'value' seconds and then close test\n");
    printf("\n\n");
    exit(1);
}

/* ------------------------------------------------------------------------ */
int main(int argc, char *argv[] )
{
    phFUNCTION("main")

    int         displaysOpen= 1;
    FLDisplay   *display    = new FLDisplay(320,240,"FLLiveSourceTest");

    char            *capture_path   = NULL;
    int             channel         = 0;
    
#ifdef WIN32
    VFWSource   *capture = new VFWSource();
#else
    V4LCapture  *capture    = new V4LCapture();
#endif
        
    /* Utility class to ease the starting and stopping of displays, captures and
     * pipelines */
    phSystem        system;
   
    /* Remove the code below when using this code as an example.
     * 
     * This just checks whether "--test" has been specified with
     * a time value argument. It's for testing all the examples
     * without the need for human intervention. */
    int             test = 0;

    phArgTable      *arg_parser = new phArgTable();

    /* Setup and parse all the arguments */
    rc = arg_parser->add("--test",&test,phARG_INT);
    phCHECK_RC(rc,NULL,"arg_parser->add");
    rc = arg_parser->add("--help",(void *)&usage,phARG_FUNC);
    phCHECK_RC(rc,NULL,"arg_parser->add");
    
    rc = arg_parser->add("--path",&capture_path,phARG_CHAR);
    phCHECK_RC(rc,NULL,"arg_parser->add");

    rc = arg_parser->add("--channel",&channel,phARG_INT);
    phCHECK_RC(rc,NULL,"arg_parser->add");
    
    rc = arg_parser->parse(argc,argv);
    phCHECK_RC(rc,NULL,"arg_parser->parse");

    capture->set(320,240,capture_path);
    capture->setChannel(channel);
    display->setLiveSourceInput(capture->getLiveSourceOutput());

    rc = system.addCapture(capture);
    phPRINT_RC(rc,NULL,"system.addCapture(capture)");
            
    rc = system.addDisplay(display);
    phPRINT_RC(rc,NULL,"system.addDisplay(display)");


    /* startup */
    rc = system.startup();
    phPRINT_RC(rc,NULL,"system.startup()");
   
    /* start the live source */
    
    while (displaysOpen)
    {
        /* Sleep a while, don't loop tightly */

        phMSleep(100);
        
        /* Yielding is optional. This gives up the thread's timeslice
         * to prevent slow response in other threads. It consumes more
         * CPU cycles than sleeping. Use it instead of sleeping if
         * this loop is processing anything */
        
        /* phYield(); */
        
        displaysOpen = 0;
        if (display->isOpen())
        {
            displaysOpen = 1;
        }

        /* Remove this if block when using this code as an example */
        /* Set the loop control value to end the loop when testing */
        if (test > 0)
        { 
            displaysOpen = 0;
            phSleep(test); /* test's value should be a time (in secs) value > 0*/
        }
    }

    rc = system.shutdown();
    phPRINT_RC(rc,NULL,"system.shutdown()");

error:
    phDelete(display);
    phDelete(capture);
    
    phFree(capture_path);
    phDelete(arg_parser);

    return phSUCCESS;
}

Copyright (C) 2002 - 2007

Philip D.S. Thoren ( pthoren@users.sourceforge.net ) University Of Massachusetts at Lowell Robotics Lab

---