GST_STATE_TRANSITION 2667 gst/gstbin.c     transition = (GstStateChange) GST_STATE_TRANSITION (current, next);
GST_STATE_TRANSITION 2198 gst/gstelement.c   transition = (GstStateChange) GST_STATE_TRANSITION (current, next);
GST_STATE_TRANSITION 2490 gst/gstelement.c   transition = (GstStateChange) GST_STATE_TRANSITION (current, next);