- debug_output ("[" + to_string (i), true);
- s->output (midi_stream, i, ports_);
+ if (Audio_control_track_staff *c =
+ dynamic_cast<Audio_control_track_staff *>(s))
+ {
+ // The control track, created by Control_track_performer, should
+ // contain a placeholder for the name of the MIDI sequence as its
+ // initial audio element. Fill in the name of the sequence to
+ // this element before outputting MIDI.
+ assert (!c->audio_items_.empty ());
+ Audio_text *text =
+ dynamic_cast<Audio_text *>(c->audio_items_.front ());
+ assert (text != 0);
+ assert (text->type_ == Audio_text::TRACK_NAME);
+ assert (text->text_string_ == "control track");
+ text->text_string_ = performance_name;
+ }
+ debug_output ("[" + ::to_string (i), true);
+ s->output (midi_stream, i, ports_, moment_to_ticks (start_mom));