+SubtitleDecoder::image_subtitle (ContentTimePeriod period, shared_ptr<Image> image, dcpomatic::Rect<double> rect)
+{
+ _decoded_image_subtitles.push_back (ContentImageSubtitle (period, image, rect));
+}
+
+void
+SubtitleDecoder::text_subtitle (ContentTimePeriod period, list<dcp::SubtitleString> s)
+{
+ _decoded_text_subtitles.push_back (ContentTextSubtitle (period, s));
+}
+
+/** @param sp Full periods of subtitles that are showing or starting during the specified period */
+template <class T>
+list<T>
+SubtitleDecoder::get (list<T> const & subs, list<ContentTimePeriod> const & sp, ContentTimePeriod period, bool starting, bool accurate)
+{
+ if (sp.empty ()) {
+ /* Nothing in this period */
+ return list<T> ();
+ }
+
+ /* Seek if what we want is before what we have, or a more than a little bit after */
+ if (subs.empty() || sp.back().to < subs.front().period().from || sp.front().from > (subs.back().period().to + ContentTime::from_seconds (1))) {
+ seek (sp.front().from, true);
+ }
+
+ /* Now enough pass() calls will either:
+ * (a) give us what we want, or
+ * (b) hit the end of the decoder.
+ */
+ while (!pass(PASS_REASON_SUBTITLE, accurate) && (subs.empty() || (subs.back().period().to < sp.back().to))) {}
+
+ /* Now look for what we wanted in the data we have collected */
+ /* XXX: inefficient */
+
+ list<T> out;
+ for (typename list<T>::const_iterator i = subs.begin(); i != subs.end(); ++i) {
+ if ((starting && period.contains (i->period().from)) || (!starting && period.overlaps (i->period ()))) {
+ out.push_back (*i);
+ }
+ }
+
+ /* Discard anything in _decoded_image_subtitles that is outside 5 seconds either side of period */
+
+ list<ContentImageSubtitle>::iterator i = _decoded_image_subtitles.begin();
+ while (i != _decoded_image_subtitles.end()) {
+ list<ContentImageSubtitle>::iterator tmp = i;
+ ++tmp;
+
+ if (
+ i->period().to < (period.from - ContentTime::from_seconds (5)) ||
+ i->period().from > (period.to + ContentTime::from_seconds (5))
+ ) {
+ _decoded_image_subtitles.erase (i);
+ }
+
+ i = tmp;
+ }
+
+ return out;
+}
+
+list<ContentTextSubtitle>
+SubtitleDecoder::get_text_subtitles (ContentTimePeriod period, bool starting, bool accurate)
+{
+ return get<ContentTextSubtitle> (_decoded_text_subtitles, text_subtitles_during (period, starting), period, starting, accurate);
+}
+
+list<ContentImageSubtitle>
+SubtitleDecoder::get_image_subtitles (ContentTimePeriod period, bool starting, bool accurate)