- virtual std::list<ContentTimePeriod> subtitles_during (ContentTimePeriod, bool starting) const = 0;
-
- boost::shared_ptr<const SubtitleContent> _subtitle_content;
+ /** @param starting true if we want only subtitles that start during the period, otherwise
+ * we want subtitles that overlap the period.
+ */
+ virtual std::list<ContentTimePeriod> image_subtitles_during (ContentTimePeriod period, bool starting) const = 0;
+ virtual std::list<ContentTimePeriod> text_subtitles_during (ContentTimePeriod period, bool starting) const = 0;