some rather simple code to allow MIDI Clock to set the tempo of the session.

[ardour.git] / libs / ardour / session.cc

diff --git a/libs/ardour/session.cc b/libs/ardour/session.cc
index f8fc5639f7ee090c6f0b6ace15767e535bc793de..064a929b434a8c9b4dac1a40c59bcb6a615ca2df 100644 (file)
--- a/libs/ardour/session.cc
+++ b/libs/ardour/session.cc
@@ -7276,3 +7276,16 @@ Session::cancel_all_solo ()
        set_controls (stripable_list_to_control_list (sl, &Stripable::solo_control), 0.0, Controllable::NoGroup);
        clear_all_solo_state (routes.reader());
 }
+
+void
+Session::maybe_update_tempo_from_midiclock_tempo (float bpm)
+{
+       if (_tempo_map->n_tempos() == 1) {
+               TempoSection& ts (_tempo_map->tempo_section_at_sample (0));
+               if (fabs (ts.note_types_per_minute() - bpm) > (0.01 * ts.note_types_per_minute())) {
+                       const Tempo tempo (bpm, 4.0, bpm);
+                       std::cerr << "new tempo " << bpm << " old " << ts.note_types_per_minute() << std::endl;
+                       _tempo_map->replace_tempo (ts, tempo, 0.0, 0.0, AudioTime);
+               }
+       }
+}