Called by GtkMediaStream implementations to advertise the stream
being ready to play and providing details about the stream.
Note that the arguments are hints. If the stream implementation
cannot determine the correct values, it is better to err on the
side of caution and return %TRUE. User interfaces will use those
values to determine what controls to show.
This function may not be called again until the stream has been
reset via [method@Gtk.MediaStream.unprepared].
Called by GtkMediaStream implementations to advertise the stream being ready to play and providing details about the stream.
Note that the arguments are hints. If the stream implementation cannot determine the correct values, it is better to err on the side of caution and return %TRUE. User interfaces will use those values to determine what controls to show.
This function may not be called again until the stream has been reset via [method@Gtk.MediaStream.unprepared].