+ dcpomatic::ContentTimePeriod content_time_period (std::shared_ptr<const dcp::Subtitle> s) const;
+ void update_position();
+
+ std::vector<std::shared_ptr<const dcp::Subtitle>> _subtitles;
+ std::vector<std::shared_ptr<const dcp::Subtitle>>::const_iterator _next;
+
+ dcp::SubtitleStandard _subtitle_standard;