[gst-devel] Compositing and GStreamer

[amartin]

Dear Timothy and Edward,

Please, would you mind posting also the code of the callback functionon
PriorityChange that includes the gst_ghost_pad_get_target call?

g_object_connect(oper, "signal::input-priority-changed", onPriorityChange,
mixer, NULL );

I am trying to accomplish the callback function but i don't achieve it (It
is never called).

I try with several alternatives from the following code:
static void
onPriorityChange (GstElement *element,
				  GstPad *pad,
				  int newpriority,     // Based on pitivi code
gnl.connect("input-priority-changed", ... videoInputPriorityChangedCb
implementation in track.py
				  gpointer data)
{
	GstPad *sinkpad;
	GstPad *ghostpad;

	printf("PRIORITY %d \n", newpriority);

        // class with the data
	GstManager *gstManager = (GstManager *) data; // data is a program object
with a lot of data including the mixer

//	ghostpad = gst_element_get_static_pad (gstManager->mixer, "sink");
        ghostpad = GST_GHOST_PAD (pad);
	sinkpad = gst_ghost_pad_get_target (GST_GHOST_PAD (ghostpad));

        // Some code to retrieve the proper xpos and zpos from gstManager
according to newpriority

	g_object_set(sinkpad,"zorder",newpriority,NULL);
	g_object_set(sinkpad,"xpos",data->left,NULL);
	g_object_set(sinkpad,"ypos",data->top,NULL);

	gst_object_unref (sinkpad);
}

Thank you in advance,

Angel
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