+ _decoded_text_subtitles.push_back (ContentTextSubtitle (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)
+{
+ if (sp.empty ()) {
+ /* Nothing in this period */
+ return list<T> ();
+ }
+
+ /* Seek if what we want is before what we have, or more than a reasonable amount after */
+ if (subs.empty() || sp.back().to < subs.front().period().from || sp.front().from > (subs.back().period().to + ContentTime::from_seconds (5))) {
+ 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() && (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);
+ }
+ }
+
+ return out;
+}
+
+list<ContentTextSubtitle>
+SubtitleDecoder::get_text_subtitles (ContentTimePeriod period, bool starting)
+{
+ return get<ContentTextSubtitle> (_decoded_text_subtitles, text_subtitles_during (period, starting), period, starting);
+}
+
+list<ContentImageSubtitle>
+SubtitleDecoder::get_image_subtitles (ContentTimePeriod period, bool starting)
+{
+ return get<ContentImageSubtitle> (_decoded_image_subtitles, image_subtitles_during (period, starting), period, starting);
+}
+
+void
+SubtitleDecoder::seek (ContentTime, bool)
+{
+ _decoded_text_subtitles.clear ();
+ _decoded_image_subtitles.clear ();