static void
take_photo (GtkWidget * widget, GstPipeline * pipeline)
{
  GstElement *encoder, *filesink;

  gst_bus_add_watch (gst_pipeline_get_bus (GST_PIPELINE (pipeline)),
		     my_bus_callback, NULL);

  encoder = gst_bin_get_by_name (GST_BIN (pipeline), "encoder");
  filesink = gst_bin_get_by_name (GST_BIN (pipeline), "filesink");

  gst_element_set_state (encoder, GST_STATE_PLAYING);
  g_warning ("I'm here!");

}