Retrieve the next #GstMeta after @current. If @state points to %NULL, the first metadata is returned.
@state will be updated with an opaque state pointer
an opaque state pointer
Return: The next #GstMeta or %NULL when there are no more items.
See Implementation
Retrieve the next #GstMeta after @current. If @state points to %NULL, the first metadata is returned.
@state will be updated with an opaque state pointer