- const Tempo& current_tempo = _session->tempo_map().tempo_at (transport_position);
- double frames_per_beat = current_tempo.frames_per_beat (_session->nominal_frame_rate());
-
- double quarter_notes_per_beat = 4.0 / current_tempo.note_type();
- double frames_per_quarter_note = frames_per_beat / quarter_notes_per_beat;