gst_event_parse_step  483 gst/gstevent.h void            gst_event_parse_step            (GstEvent *event, GstFormat *format, guint64 *amount,
gst_event_parse_step 3821 libs/gst/base/gstbasesink.c   gst_event_parse_step (event, &format, &amount, &rate, &flush, &intermediate);