Returns the current stream-id for the pad, or NULL if none has been
set yet, i.e. the pad has not received a stream-start event yet.
This is a convenience wrapper around gst_pad_get_sticky_event() and
gst_event_parse_stream_start().
The returned stream-id string should be treated as an opaque string, its
contents should not be interpreted.
Since 1.2
Returns the current stream-id for the pad, or NULL if none has been set yet, i.e. the pad has not received a stream-start event yet. This is a convenience wrapper around gst_pad_get_sticky_event() and gst_event_parse_stream_start(). The returned stream-id string should be treated as an opaque string, its contents should not be interpreted. Since 1.2