+ boost::optional<dcp::LanguageTag> burnt_subtitle_language () const {
+ boost::mutex::scoped_lock lm (_mutex);
+ return _burnt_subtitle_language;
+ }
+
+
+ /* XXX: names for these? */
+ boost::optional<dcp::Size> size_after_3d_split() const;
+ boost::optional<dcp::Size> size_after_crop() const;
+ boost::optional<dcp::Size> scaled_size(dcp::Size container_size);
+
+ boost::optional<double> fade (std::shared_ptr<const Film> film, Frame) const;
+
+ std::string processing_description (std::shared_ptr<const Film> film);