-protected:
- /** Seek so that the next pass() will yield the next thing
- * (video/sound frame, subtitle etc.) at or after the requested
- * time. Pass accurate = true to try harder to get close to
- * the request. Note that seeking to time t may mean that
- * the next pass() yields, for example, audio at time t and then
- * video before it.
+ boost::shared_ptr<VideoDecoder> video;
+ boost::shared_ptr<AudioDecoder> audio;
+ std::list<boost::shared_ptr<TextDecoder> > text;
+
+ boost::shared_ptr<TextDecoder> only_text () const;
+
+ /** Do some decoding and perhaps emit video, audio or subtitle data.
+ * @return true if this decoder will emit no more data unless a seek() happens.