+ _decoded_text_subtitles.push_back (shared_ptr<ContentTextSubtitle> (new ContentTextSubtitle (s)));
+}
+
+template <class T>
+list<shared_ptr<T> >
+SubtitleDecoder::get (list<shared_ptr<T> > const & subs, ContentTimePeriod period)
+{
+ if (!has_subtitle_during (period)) {
+ return list<shared_ptr<T> > ();
+ }
+
+ if (subs.empty() || period.from < subs.front()->period().from || period.to > (subs.back()->period().to + ContentTime::from_seconds (10))) {
+ /* Either we have no decoded data, or what we do have is a long way from what we want: seek */
+ seek (period.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.front()->period().from > period.from || period.to < subs.back()->period().to))) {}
+
+ /* Now look for what we wanted in the data we have collected */
+ /* XXX: inefficient */
+
+ list<shared_ptr<T> > out;
+ for (typename list<shared_ptr<T> >::const_iterator i = subs.begin(); i != subs.end(); ++i) {
+ if ((*i)->period().overlaps (period)) {
+ out.push_back (*i);
+ }
+ }
+
+ return out;
+}
+
+list<shared_ptr<ContentTextSubtitle> >
+SubtitleDecoder::get_text_subtitles (ContentTimePeriod period)
+{
+ return get<ContentTextSubtitle> (_decoded_text_subtitles, period);
+}
+
+list<shared_ptr<ContentImageSubtitle> >
+SubtitleDecoder::get_image_subtitles (ContentTimePeriod period)
+{
+ return get<ContentImageSubtitle> (_decoded_image_subtitles, period);
+}
+
+void
+SubtitleDecoder::seek (ContentTime, bool)
+{
+ _decoded_text_subtitles.clear ();
+ _decoded_image_subtitles.clear ();