diff options
Diffstat (limited to 'libs/ardour/ardour/tempo.h')
| -rw-r--r-- | libs/ardour/ardour/tempo.h | 118 |
1 files changed, 67 insertions, 51 deletions
diff --git a/libs/ardour/ardour/tempo.h b/libs/ardour/ardour/tempo.h index 3c56d74db5..c32d829fba 100644 --- a/libs/ardour/ardour/tempo.h +++ b/libs/ardour/ardour/tempo.h @@ -62,15 +62,14 @@ class LIBARDOUR_API Tempo { double beats_per_minute () const { return _beats_per_minute; } void set_beats_per_minute (double bpm) { _beats_per_minute = bpm; } double note_type () const { return _note_type; } - /** audio samples per beat + /** audio samples per quarter note beat. + * this is only useful for constant tempo and should not be used. + * if you want an instantaneous value for this, use frames_per_beat_at() instead. * @param sr samplerate */ double frames_per_beat (framecnt_t sr) const { return (60.0 * sr) / _beats_per_minute; } - double frames_per_pulse (framecnt_t sr) const { - return (_note_type * 60.0 * sr) / _beats_per_minute; - } protected: double _beats_per_minute; @@ -105,19 +104,21 @@ class LIBARDOUR_API Meter { /** A section of timeline with a certain Tempo or Meter. */ class LIBARDOUR_API MetricSection { public: - MetricSection (double pulse, framepos_t frame, PositionLockStyle pls, bool is_tempo) - : _pulse (pulse), _frame (frame), _movable (true), _position_lock_style (pls), _is_tempo (is_tempo) {} + MetricSection (double pulse, double minute, PositionLockStyle pls, bool is_tempo, framecnt_t sample_rate) + : _pulse (pulse), _minute (minute), _movable (true), _position_lock_style (pls), _is_tempo (is_tempo), _sample_rate (sample_rate) {} virtual ~MetricSection() {} const double& pulse () const { return _pulse; } void set_pulse (double pulse) { _pulse = pulse; } - framepos_t frame() const { return _frame; } - virtual void set_frame (framepos_t f) { - _frame = f; + double minute() const { return _minute; } + virtual void set_minute (double m) { + _minute = m; } + framepos_t frame () const { return frame_at_minute (_minute); } + void set_movable (bool yn) { _movable = yn; } bool movable() const { return _movable; } @@ -131,21 +132,26 @@ class LIBARDOUR_API MetricSection { void set_position_lock_style (PositionLockStyle ps) { _position_lock_style = ps; } bool is_tempo () const { return _is_tempo; } + framepos_t frame_at_minute (const double& time) const; + double minute_at_frame (const framepos_t& frame) const; + private: + double _pulse; - framepos_t _frame; + double _minute; bool _movable; PositionLockStyle _position_lock_style; const bool _is_tempo; + framecnt_t _sample_rate; }; /** A section of timeline with a certain Meter. */ class LIBARDOUR_API MeterSection : public MetricSection, public Meter { public: - MeterSection (double pulse, framepos_t frame, double beat, const Timecode::BBT_Time& bbt, double bpb, double note_type, PositionLockStyle pls) - : MetricSection (pulse, frame, pls, false), Meter (bpb, note_type), _bbt (bbt), _beat (beat) {} + MeterSection (double pulse, double minute, double beat, const Timecode::BBT_Time& bbt, double bpb, double note_type, PositionLockStyle pls, framecnt_t sr) + : MetricSection (pulse, minute, pls, false, sr), Meter (bpb, note_type), _bbt (bbt), _beat (beat) {} - MeterSection (const XMLNode&); + MeterSection (const XMLNode&, const framecnt_t sample_rate); static const std::string xml_state_node_name; @@ -173,10 +179,10 @@ class LIBARDOUR_API TempoSection : public MetricSection, public Tempo { Constant, }; - TempoSection (const double& pulse, const framepos_t& frame, double qpm, double note_type, Type tempo_type, PositionLockStyle pls) - : MetricSection (pulse, frame, pls, true), Tempo (qpm, note_type), _type (tempo_type), _c_func (0.0), _active (true), _locked_to_meter (false) {} + TempoSection (const double& pulse, const double& minute, double qpm, double note_type, Type tempo_type, PositionLockStyle pls, framecnt_t sr) + : MetricSection (pulse, minute, pls, true, sr), Tempo (qpm, note_type), _type (tempo_type), _c_func (0.0), _active (true), _locked_to_meter (false) {} - TempoSection (const XMLNode&); + TempoSection (const XMLNode&, const framecnt_t sample_rate); static const std::string xml_state_node_name; @@ -194,25 +200,25 @@ class LIBARDOUR_API TempoSection : public MetricSection, public Tempo { bool locked_to_meter () const { return _locked_to_meter; } void set_locked_to_meter (bool yn) { _locked_to_meter = yn; } - double tempo_at_frame (const framepos_t& frame, const framecnt_t& frame_rate) const; - framepos_t frame_at_tempo (const double& ppm, const double& beat, const framecnt_t& frame_rate) const; + double tempo_at_minute (const double& minute) const; + double minute_at_tempo (const double& bpm, const double& pulse) const; double tempo_at_pulse (const double& pulse) const; - double pulse_at_tempo (const double& ppm, const framepos_t& frame, const framecnt_t& frame_rate) const; + double pulse_at_tempo (const double& bpm, const double& minute) const; + + double pulse_at_frame (const framepos_t& frame) const; + framepos_t frame_at_pulse (const double& pulse) const; - double pulse_at_frame (const framepos_t& frame, const framepos_t& frame_rate) const; - framepos_t frame_at_pulse (const double& pulse, const framecnt_t& frame_rate) const; + double pulse_at_minute (const double& minute) const; + double minute_at_pulse (const double& pulse) const; - double compute_c_func_pulse (const double& end_bpm, const double& end_pulse, const framecnt_t& frame_rate); - double compute_c_func_frame (const double& end_bpm, const framepos_t& end_frame, const framecnt_t& frame_rate) const; + double compute_c_func_pulse (const double& end_bpm, const double& end_pulse) const; + double compute_c_func_minute (const double& end_bpm, const double& end_minute) const; Timecode::BBT_Time legacy_bbt () { return _legacy_bbt; } private: - framepos_t minute_to_frame (const double& time, const framecnt_t& frame_rate) const; - double frame_to_minute (const framepos_t& frame, const framecnt_t& frame_rate) const; - /* tempo ramp functions. zero-based with time in minutes, * 'tick tempo' in ticks per minute and tempo in bpm. * time relative to section start. @@ -252,11 +258,11 @@ typedef std::list<MetricSection*> Metrics; class LIBARDOUR_API TempoMetric { public: TempoMetric (const Meter& m, const Tempo& t) - : _meter (&m), _tempo (&t), _frame (0), _pulse (0.0) {} + : _meter (&m), _tempo (&t), _minute (0.0), _pulse (0.0) {} void set_tempo (const Tempo& t) { _tempo = &t; } void set_meter (const Meter& m) { _meter = &m; } - void set_frame (framepos_t f) { _frame = f; } + void set_minute (double m) { _minute = m; } void set_pulse (const double& p) { _pulse = p; } void set_metric (const MetricSection* section) { @@ -268,19 +274,19 @@ class LIBARDOUR_API TempoMetric { set_tempo(*tempo); } - set_frame (section->frame()); + set_minute (section->minute()); set_pulse (section->pulse()); } const Meter& meter() const { return *_meter; } const Tempo& tempo() const { return *_tempo; } - framepos_t frame() const { return _frame; } + double minute() const { return _minute; } const double& pulse() const { return _pulse; } private: const Meter* _meter; const Tempo* _tempo; - framepos_t _frame; + double _minute; double _pulse; }; @@ -348,7 +354,7 @@ class LIBARDOUR_API TempoMap : public PBD::StatefulDestructible * @param where bbt position of new section * @param frame frame position of new section. ignored if pls == MusicTime */ - MeterSection* add_meter (const Meter&, const double& beat, const Timecode::BBT_Time& where, const framepos_t& frame, PositionLockStyle pls); + MeterSection* add_meter (const Meter&, const double& beat, const Timecode::BBT_Time& where, PositionLockStyle pls); void remove_tempo (const TempoSection&, bool send_signal); void remove_meter (const MeterSection&, bool send_signal); @@ -356,8 +362,7 @@ class LIBARDOUR_API TempoMap : public PBD::StatefulDestructible void replace_tempo (const TempoSection&, const Tempo&, const double& pulse, const framepos_t& frame , TempoSection::Type type, PositionLockStyle pls); - void replace_meter (const MeterSection&, const Meter&, const Timecode::BBT_Time& where, const framepos_t& frame - , PositionLockStyle pls); + void replace_meter (const MeterSection&, const Meter&, const Timecode::BBT_Time& where, PositionLockStyle pls); framepos_t round_to_bar (framepos_t frame, RoundMode dir); framepos_t round_to_beat (framepos_t frame, RoundMode dir); @@ -410,6 +415,7 @@ class LIBARDOUR_API TempoMap : public PBD::StatefulDestructible framepos_t frame_at_tempo (const Tempo& tempo) const; Tempo tempo_at_beat (const double& beat) const; + double beat_at_tempo (const Tempo& tempo) const; const Meter& meter_at_frame (framepos_t) const; @@ -454,6 +460,8 @@ class LIBARDOUR_API TempoMap : public PBD::StatefulDestructible double quarter_note_at_beat (const double beat); double beat_at_quarter_note (const double beat); + framecnt_t frames_between_quarter_notes (const double start, const double end); + void gui_move_tempo (TempoSection*, const framepos_t& frame, const int& sub_num); void gui_move_meter (MeterSection*, const framepos_t& frame); bool gui_change_tempo (TempoSection*, const Tempo& bpm); @@ -470,20 +478,23 @@ class LIBARDOUR_API TempoMap : public PBD::StatefulDestructible private: - double beat_at_frame_locked (const Metrics& metrics, const framecnt_t& frame) const; - framepos_t frame_at_beat_locked (const Metrics& metrics, const double& beat) const; + double beat_at_minute_locked (const Metrics& metrics, const double& minute) const; + double minute_at_beat_locked (const Metrics& metrics, const double& beat) const; double pulse_at_beat_locked (const Metrics& metrics, const double& beat) const; double beat_at_pulse_locked (const Metrics& metrics, const double& pulse) const; - double pulse_at_frame_locked (const Metrics& metrics, const framepos_t& frame) const; - framepos_t frame_at_pulse_locked (const Metrics& metrics, const double& pulse) const; + double pulse_at_minute_locked (const Metrics& metrics, const double& minute) const; + double minute_at_pulse_locked (const Metrics& metrics, const double& pulse) const; + + Tempo tempo_at_minute_locked (const Metrics& metrics, const double& minute) const; + double minute_at_tempo_locked (const Metrics& metrics, const Tempo& tempo) const; - Tempo tempo_at_frame_locked (const Metrics& metrics, const framepos_t& frame) const; - framepos_t frame_at_tempo_locked (const Metrics& metrics, const Tempo& tempo) const; + Tempo tempo_at_pulse_locked (const Metrics& metrics, const double& pulse) const; + double pulse_at_tempo_locked (const Metrics& metrics, const Tempo& tempo) const; - Timecode::BBT_Time bbt_at_frame_locked (const Metrics& metrics, const framepos_t& frame) const; - framepos_t frame_at_bbt_locked (const Metrics& metrics, const Timecode::BBT_Time&) const; + Timecode::BBT_Time bbt_at_minute_locked (const Metrics& metrics, const double& minute) const; + double minute_at_bbt_locked (const Metrics& metrics, const Timecode::BBT_Time&) const; double beat_at_bbt_locked (const Metrics& metrics, const Timecode::BBT_Time& bbt) const ; Timecode::BBT_Time bbt_at_beat_locked (const Metrics& metrics, const double& beats) const; @@ -491,28 +502,34 @@ private: double pulse_at_bbt_locked (const Metrics& metrics, const Timecode::BBT_Time& bbt) const; Timecode::BBT_Time bbt_at_pulse_locked (const Metrics& metrics, const double& pulse) const; - framepos_t frame_at_quarter_note_locked (const Metrics& metrics, const double quarter_note) const; - double quarter_note_at_frame_locked (const Metrics& metrics, const framepos_t frame) const; + double minute_at_quarter_note_locked (const Metrics& metrics, const double quarter_note) const; + double quarter_note_at_minute_locked (const Metrics& metrics, const double minute) const; + double quarter_note_at_beat_locked (const Metrics& metrics, const double beat) const; double beat_at_quarter_note_locked (const Metrics& metrics, const double beat) const; - const TempoSection& tempo_section_at_frame_locked (const Metrics& metrics, framepos_t frame) const; + double minutes_between_quarter_notes_locked (const Metrics& metrics, const double start_qn, const double end_qn); + + const TempoSection& tempo_section_at_minute_locked (const Metrics& metrics, double minute) const; const TempoSection& tempo_section_at_beat_locked (const Metrics& metrics, const double& beat) const; - const MeterSection& meter_section_at_frame_locked (const Metrics& metrics, framepos_t frame) const; + const MeterSection& meter_section_at_minute_locked (const Metrics& metrics, double minute) const; const MeterSection& meter_section_at_beat_locked (const Metrics& metrics, const double& beat) const; bool check_solved (const Metrics& metrics) const; bool set_active_tempos (const Metrics& metrics, const framepos_t& frame); - bool solve_map_frame (Metrics& metrics, TempoSection* section, const framepos_t& frame); + bool solve_map_minute (Metrics& metrics, TempoSection* section, const double& minute); bool solve_map_pulse (Metrics& metrics, TempoSection* section, const double& pulse); - bool solve_map_frame (Metrics& metrics, MeterSection* section, const framepos_t& frame); + bool solve_map_minute (Metrics& metrics, MeterSection* section, const double& minute); bool solve_map_bbt (Metrics& metrics, MeterSection* section, const Timecode::BBT_Time& bbt); double exact_beat_at_frame_locked (const Metrics& metrics, const framepos_t& frame, const int32_t sub_num); double exact_qn_at_frame_locked (const Metrics& metrics, const framepos_t& frame, const int32_t sub_num); + double minute_at_frame (const framepos_t frame) const; + framepos_t frame_at_minute (const double minute) const; + friend class ::BBTTest; friend class ::FrameposPlusBeatsTest; friend class ::FrameposMinusBeatsTest; @@ -538,11 +555,10 @@ private: void do_insert (MetricSection* section); - TempoSection* add_tempo_locked (const Tempo&, double pulse, framepos_t frame + TempoSection* add_tempo_locked (const Tempo&, double pulse, double minute , TempoSection::Type type, PositionLockStyle pls, bool recompute, bool locked_to_meter = false); - MeterSection* add_meter_locked (const Meter&, double beat, const Timecode::BBT_Time& where, framepos_t frame - , PositionLockStyle pls, bool recompute); + MeterSection* add_meter_locked (const Meter&, double beat, const Timecode::BBT_Time& where, PositionLockStyle pls, bool recompute); bool remove_tempo_locked (const TempoSection&); bool remove_meter_locked (const MeterSection&); |