- AVCodecContext* _subtitle_codec_context; ///< may be 0 if there is no subtitle
- AVCodec* _subtitle_codec; ///< may be 0 if there is no subtitle
-
- std::list<boost::shared_ptr<FilterGraph> > _filter_graphs;
- boost::mutex _filter_graphs_mutex;
+ std::list<ContentTimePeriod> image_subtitles_during (ContentTimePeriod, bool starting) const;
+ std::list<ContentTimePeriod> text_subtitles_during (ContentTimePeriod, bool starting) const;