X11MultiCaptureTest.cpp

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/* ---------------------------------------------------------------------------
    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 <X11MultiCaptureTest.h>
#include <phission.h>

/* ------------------------------------------------------------------------ */
int glbl_disable_displays = 0;

/* ------------------------------------------------------------------------ */
int usage ()
{
    printf("\n\nUsage:\n");
    printf("\t--help            Display usage\n");
    printf("\t--nodisplay       Disable the allocation, opening or any use of a display.\n");
    printf("\t--test <value>    Sleep 'value' seconds and then close test\n");
    printf("\n\n");
    exit(1);
}
        
/* ------------------------------------------------------------------------ */
int main(int argc, char *argv[] )
{
    phFUNCTION("main")

    uint32_t        i           = 0;

    uint32_t            width       = 320;
    uint32_t            height      = 240;
    uint32_t            nDisplays   = 4;
    int                 displaysOpen= 1;
    char                title[255];
    phDisplayInterface  **display   = NULL;
    
    uint32_t        nCaptures   = 4;
    char            device[255];
#ifdef WIN32
    VFWSource       *capture[nCaptures]; 
#else
    V4LCapture      *capture[nCaptures];
#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();

    rc = arg_parser->add("--test",&test,phARG_INT);
    phCHECK_RC(rc,NULL,"arg_parser->add");
    rc = arg_parser->add("--nodisplay",&glbl_disable_displays,phARG_BOOL);
    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->parse(argc,argv);
    phCHECK_RC(rc,NULL,"arg_parser->parse");
    
    if (glbl_disable_displays) nDisplays = 0;

    for (i = 0; i < nCaptures; i++ )
    {   
#ifdef WIN32
        sprintf(device,"%d",i);
        capture[i] = new VFWSource();
#else
        sprintf(device,"/dev/video%d",i);
        capture[i] = new V4LCapture();
#endif
        capture[i]->set(width,height,device);
        capture[i]->setChannel(0);
        capture[i]->setBrightness(20000);

        rc = system.addCapture(capture[i]);
        phPRINT_RC(rc,NULL,"system.addCapture(capture[%u])",i);
    }

    display = new phDisplayInterface *[nDisplays];
    phCHECK_NULLPTR(display,"new","new phDisplayInterface *[nDisplays];");

    for (i = 0; i < nDisplays; i++)
    {
        sprintf(title,"X11MultiCaptureTest[%u]",i);

        display[i] = new X11Display(width,height,title);

        if (i < nCaptures)
            display[i]->setLiveSourceInput(capture[i]->getLiveSourceOutput());
        
        rc = system.addDisplay(display[i]);
        phPRINT_RC(rc,NULL,"system.addDisplay(display[i:%d])",i);
    }
    
    
    /* startup */
    rc = system.startup();
    phPRINT_RC(rc,NULL,"system.startup()");
   
    displaysOpen = 1;
    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(); */
        
        if (nDisplays > 0)
        {       
            displaysOpen = 0;
            for (i = 0; (i < nDisplays) && (displaysOpen == 0); i++)
            {
                if (display[i]->isOpen() == 1)
                {
                    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:
    for (i = 0; i < nCaptures; i++)
    {
        phDelete(capture[i]);
    }

    for (i = 0; (i < nDisplays) && (display != NULL); i++)
    {
        phDelete(display[i]);
    }
 
    phDeleteArray(display);

    phDelete(arg_parser);

    return phSUCCESS;
}

Copyright (C) 2002 - 2007

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

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