void emit_video (boost::shared_ptr<PlayerVideo> pv, dcpomatic::DCPTime time);
void do_emit_video (boost::shared_ptr<PlayerVideo> pv, dcpomatic::DCPTime time);
void emit_audio (boost::shared_ptr<AudioBuffers> data, dcpomatic::DCPTime time);
void emit_video (boost::shared_ptr<PlayerVideo> pv, dcpomatic::DCPTime time);
void do_emit_video (boost::shared_ptr<PlayerVideo> pv, dcpomatic::DCPTime time);
void emit_audio (boost::shared_ptr<AudioBuffers> data, dcpomatic::DCPTime time);