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-rw-r--r--libs/ardour/ardour/tempo.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/libs/ardour/ardour/tempo.h b/libs/ardour/ardour/tempo.h
index 57c6ced275..1b587a5668 100644
--- a/libs/ardour/ardour/tempo.h
+++ b/libs/ardour/ardour/tempo.h
@@ -441,6 +441,7 @@ class LIBARDOUR_API TempoMap : public PBD::StatefulDestructible
Evoral::Beats framewalk_to_qn (framepos_t pos, framecnt_t distance) const;
/* quarter note related functions are also tempo-sensitive and ignore meter.
+ quarter notes may be compared with and assigned to Evoral::Beats.
*/
double quarter_note_at_frame (const framepos_t frame);
double quarter_note_at_frame_rt (const framepos_t frame);
@@ -451,6 +452,7 @@ class LIBARDOUR_API TempoMap : public PBD::StatefulDestructible
double quarter_note_at_beat (const double beat);
double beat_at_quarter_note (const double beat);
+ /* obtain a musical subdivision via a frame position and magic note divisor.*/
double exact_qn_at_frame (const framepos_t& frame, const int32_t sub_num);
double exact_beat_at_frame (const framepos_t& frame, const int32_t sub_num);