...
Custom GstMessage name that will be sent to GstBus when autofocusing  is complete */
#define GST_PHOTOGRAPHY_AUTOFOCUS_DONE "autofocus-done"
...

gboolean CameraN900::initialize_pipeline(int *argc, char ***argv) 
{
	...
	pipeline = gst_pipeline_new("test-camera");
	bus = gst_pipeline_get_bus(GST_PIPELINE(pipeline));
	gst_bus_add_watch(bus, (GstBusFunc)bus_callback, camera_src);
	...
}

gboolean CameraN900::bus_callback (GstMessage * message)
{
	const gchar *message_str;	
	
	message_str = gst_message_type_get_name(GST_MESSAGE_TYPE (message));
	printf("Message: %s\n",message_str);

	GType focusStatus= gst_focus_status_get_type();
	switch(GstFocusStatus (focusStatus)){
		case GST_PHOTOGRAPHY_FOCUS_STATUS_NONE:
			printf("NONE\n");
		case GST_PHOTOGRAPHY_FOCUS_STATUS_RUNNING:
				printf("RUNNINF\n");
		case GST_PHOTOGRAPHY_FOCUS_STATUS_FAIL:
				printf("FAILE\n");
		case GST_PHOTOGRAPHY_FOCUS_STATUS_SUCCESS:
				printf("SUCCESS\n");
			break;
		}
	return TRUE;
}