Re: Need help with Image Aquisition code

[Jamie Guinan <guinan bluebutton com>]

I've done a similar program that works roughly as follows:

   gtk_init(&argc, &argv);
   gdk_rgb_init(); /* Do everything in RGB, let gdk worry about display
                      depth, etc. */
   display_init(); /* Create display window. */
   while (1)
     {
       img = capture_image();  /* Captures image, returns buffer
                                  descriptor including raw image. */
       process_image(img));    /* Convert raw image to RGB, color-correct,
                                  etc. */
       display_image(img);     /* gdk_draw_rgb_image() into window */
       while (gtk_events_pending())  /* Handle pending GTK events. */
         {
           gtk_main_iteration();
         }
       free(img);               /* Free descriptor. */
      }

I can get away with while(1) by simply calling exit() from my
key_press_event signal handler.  Its Unix, it can handle it.  :)

-Jamie

On Wed, 31 Jan 2001, Jerry Mulchin wrote:

> 
> I'm writing a GTk/Gnome application that will acquire images from a
> CCD camera. I'm at the point where I'm ready to acquire the image,
> but I don't know where to put the loop to process the acquisition.
> 
> I have a window that I open in preparation to displaying the image.
> The loop will run, just acquiring images until the user closes the 
> window the image is displayed in. The act of closing the window
> needs to destroy not only the window, but also terminate the loop
> grabing images from the camera.
> 
> I don't think I want to use the "idle" function to do the acquisition,
> but I don't know what else to use.
> 
> I'm looking for suggestions to my dilemma.
> 
> Thanks in advance
> 
> Jerry Mulchin    Amateur Radio Call  -  N7EME
> Programmer, Amateur Astronomer, Ham Radio
> e-mail (home) - jmulchin astroguy com
> e-mail (work) - jmulchin cisco com
> Astronomy Web Page  http://www.astroguy.com
> "It is never wrong to ask a question, it is always wrong to be ignorant."
> 
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> 

-- 
================================================================
Jamie Guinan                         Blue Button Solutions, Inc.
guinan bluebutton com                 http://www.bluebutton.com/
================================================================