+ as_xml (root, _image_subtitles, "ImageSubtitle");
+ as_xml (root, _text_subtitles, "TextSubtitle");
+
+ for (map<RGBA, RGBA>::const_iterator i = _colours.begin(); i != _colours.end(); ++i) {
+ xmlpp::Node* node = root->add_child("Colour");
+ i->first.as_xml (node->add_child("From"));
+ i->second.as_xml (node->add_child("To"));
+ }
+}
+
+void
+FFmpegSubtitleStream::as_xml (xmlpp::Node* root, PeriodMap const & subs, string node_name) const
+{
+ for (PeriodMap::const_iterator i = subs.begin(); i != subs.end(); ++i) {
+ xmlpp::Node* node = root->add_child (node_name);
+ node->add_child("Id")->add_child_text (i->first);
+ node->add_child("From")->add_child_text (raw_convert<string> (i->second.from.get ()));
+ node->add_child("To")->add_child_text (raw_convert<string> (i->second.to.get ()));
+ }
+}
+
+void
+FFmpegSubtitleStream::add_image_subtitle (string id, ContentTimePeriod period)
+{
+ DCPOMATIC_ASSERT (_image_subtitles.find (id) == _image_subtitles.end ());
+ _image_subtitles[id] = period;
+}
+
+void
+FFmpegSubtitleStream::add_text_subtitle (string id, ContentTimePeriod period)
+{
+ DCPOMATIC_ASSERT (_text_subtitles.find (id) == _text_subtitles.end ());
+ _text_subtitles[id] = period;
+}
+
+list<ContentTimePeriod>
+FFmpegSubtitleStream::image_subtitles_during (ContentTimePeriod period, bool starting) const
+{
+ return subtitles_during (period, starting, _image_subtitles);
+}
+
+list<ContentTimePeriod>
+FFmpegSubtitleStream::text_subtitles_during (ContentTimePeriod period, bool starting) const
+{
+ return subtitles_during (period, starting, _text_subtitles);
+}
+
+struct PeriodSorter
+{
+ bool operator() (ContentTimePeriod const & a, ContentTimePeriod const & b) {
+ return a.from < b.from;