GST_IS_QUERY 628 gst/gstinfo.c if (GST_IS_QUERY (object)) { GST_IS_QUERY 3672 gst/gstpad.c g_return_val_if_fail (GST_IS_QUERY (query), FALSE); GST_IS_QUERY 3710 gst/gstpad.c g_return_val_if_fail (GST_IS_QUERY (query), FALSE); GST_IS_QUERY 824 gst/gstquery.c g_return_val_if_fail (GST_IS_QUERY (query), NULL);