+
+void
+FFmpegSubtitleStream::add_subtitle (ContentTimePeriod period)
+{
+ DCPOMATIC_ASSERT (_subtitles.find (period.from) == _subtitles.end ());
+ _subtitles[period.from] = period.to;
+}
+
+list<ContentTimePeriod>
+FFmpegSubtitleStream::subtitles_during (ContentTimePeriod period, bool starting) const
+{
+ list<ContentTimePeriod> d;
+
+ /* XXX: inefficient */
+ for (map<ContentTime, ContentTime>::const_iterator i = _subtitles.begin(); i != _subtitles.end(); ++i) {
+ if ((starting && period.contains (i->first)) || (!starting && period.overlaps (ContentTimePeriod (i->first, i->second)))) {
+ d.push_back (ContentTimePeriod (i->first, i->second));
+ }
+ }
+
+ return d;
+}
+
+ContentTime
+FFmpegSubtitleStream::find_subtitle_to (ContentTime from) const
+{
+ map<ContentTime, ContentTime>::const_iterator i = _subtitles.find (from);
+ DCPOMATIC_ASSERT (i != _subtitles.end ());
+ return i->second;
+}