gst_clock_id_compare_func  542 gst/gstclock.h gint			gst_clock_id_compare_func	(gconstpointer id1, gconstpointer id2);
gst_clock_id_compare_func  424 gst/gstsystemclock.c               g_list_sort (clock->entries, gst_clock_id_compare_func);
gst_clock_id_compare_func  772 gst/gstsystemclock.c       gst_clock_id_compare_func);