+ boost::shared_ptr<Image> _black_image;
+ boost::optional<ContentTime> _last_seek_time;
+ bool _last_seek_accurate;
+ /** true if this decoder should ignore all video; i.e. never produce any */
+ bool _ignore_video;
+ /** if set, this is a frame for which we got no data because the Decoder said
+ * it has no more to give.
+ */
+ boost::optional<Frame> _no_data_frame;