std::pair<boost::shared_ptr<AudioBuffers>, DCPTime> discard_audio (
boost::shared_ptr<const AudioBuffers> audio, DCPTime time, DCPTime discard_to
) const;
boost::optional<PositionImage> subtitles_for_frame (DCPTime time) const;
void emit_video (boost::shared_ptr<PlayerVideo> pv, DCPTime time);
std::pair<boost::shared_ptr<AudioBuffers>, DCPTime> discard_audio (
boost::shared_ptr<const AudioBuffers> audio, DCPTime time, DCPTime discard_to
) const;
boost::optional<PositionImage> subtitles_for_frame (DCPTime time) const;
void emit_video (boost::shared_ptr<PlayerVideo> pv, DCPTime time);