Fakesrc not working as exected

[deepthips]

For testing whether fakesrc is working correctly in my arm board, I needed to
test some of its properties. To start with, I took the common test
application found in web for fakesrc.  [ Below] . But I expected it to show
black and white images. Nothing came. The print <<< ------------ In
cb_handoff  >>>> also didnt come.  Is there something I missed.?
Thanks for your time.





#include <string.h> /* for memset () */
#include <gst/gst.h>

static void
cb_handoff (GstElement *fakesrc,
	    GstBuffer  *buffer,
	    GstPad     *pad,
	    gpointer    user_data)
{
  static gboolean white = FALSE;
printf("\n ------------ In cb_handoff \n");

  /* this makes the image black/white */
  memset (GST_BUFFER_DATA (buffer), white ? 0xff : 0x0,
	  GST_BUFFER_SIZE (buffer));
  white = !white;
}

gint
main (gint   argc,
      gchar *argv[])
{
  GstElement *pipeline, *fakesrc, *flt, *conv, *videosink;
  GMainLoop *loop;

  /* init GStreamer */
  gst_init (&argc, &argv);
  loop = g_main_loop_new (NULL, FALSE);

  /* setup pipeline */
  pipeline = gst_pipeline_new ("pipeline");
  fakesrc = gst_element_factory_make ("fakesrc", "source");
  flt = gst_element_factory_make ("capsfilter", "flt");
  conv = gst_element_factory_make ("ffmpegcolorspace", "conv");
  videosink = gst_element_factory_make ("xvimagesink", "videosink");

  /* setup */
  g_object_set (G_OBJECT (flt), "caps",
  		gst_caps_new_simple ("video/x-raw-rgb",
				     "width", G_TYPE_INT, 384,
				     "height", G_TYPE_INT, 288,
				     "framerate", GST_TYPE_FRACTION, 1, 1,
				     "bpp", G_TYPE_INT, 16,
				     "depth", G_TYPE_INT, 16,
				     "endianness", G_TYPE_INT, G_BYTE_ORDER,
				     NULL), NULL);
  gst_bin_add_many (GST_BIN (pipeline), fakesrc, flt, conv, videosink,
NULL);
  gst_element_link_many (fakesrc, flt, conv, videosink, NULL);

  /* setup fake source */
  g_object_set (G_OBJECT (fakesrc),
		"signal-handoffs", TRUE,
		"sizemax", 384 * 288 * 2,
		"sizetype", 2, NULL);
  g_signal_connect (fakesrc, "handoff", G_CALLBACK (cb_handoff), NULL);

  /* play */
  gst_element_set_state (pipeline, GST_STATE_PLAYING);
  g_main_loop_run (loop);

  /* clean up */
  gst_element_set_state (pipeline, GST_STATE_NULL);
  gst_object_unref (GST_OBJECT (pipeline));

  return 0;
}






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