X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=libs%2Fardour%2Fardour%2Ftempo.h;h=e6f07a3772f3cf2c6000f7cb50de1742075324ca;hb=8bcf57cad453c3f053b2d12c4d2343236b36aa88;hp=d5ae2959c689851f61a9452bb592647fed586ad4;hpb=94e4e2f55f79fc025dad17a72dcd7217869a3d91;p=ardour.git diff --git a/libs/ardour/ardour/tempo.h b/libs/ardour/ardour/tempo.h index d5ae2959c6..e6f07a3772 100644 --- a/libs/ardour/ardour/tempo.h +++ b/libs/ardour/ardour/tempo.h @@ -27,10 +27,11 @@ #include #include "pbd/undo.h" + #include "pbd/stateful.h" #include "pbd/statefuldestructible.h" -#include "evoral/types.hpp" +#include "evoral/Beats.hpp" #include "ardour/ardour.h" @@ -47,14 +48,29 @@ class TempoMap; /** Tempo, the speed at which musical time progresses (BPM). */ class LIBARDOUR_API Tempo { public: + /** + * @param bpm Beats Per Minute + * @param type Note Type (default `4': quarter note) + */ Tempo (double bpm, double type=4.0) // defaulting to quarter note : _beats_per_minute (bpm), _note_type(type) {} - double beats_per_minute () const { return _beats_per_minute;} - double note_type () const { return _note_type;} + /* ..or more aptly 'pulse divisions per minute'. + Nothing to do with actual beats, which are defined by the meter and 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; } + double pulses_per_minute () const { return _beats_per_minute / _note_type; } + /** audio samples per beat + * @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; @@ -89,26 +105,23 @@ class LIBARDOUR_API Meter { /** A section of timeline with a certain Tempo or Meter. */ class LIBARDOUR_API MetricSection { public: - MetricSection (const Timecode::BBT_Time& start) - : _start (start), _frame (0), _movable (true) {} - MetricSection (framepos_t start) - : _frame (start), _movable (true) {} + MetricSection (double pulse) + : _pulse (pulse), _frame (0), _movable (true), _position_lock_style (MusicTime) {} + MetricSection (framepos_t frame) + : _pulse (0.0), _frame (frame), _movable (true), _position_lock_style (AudioTime) {} virtual ~MetricSection() {} - const Timecode::BBT_Time& start() const { return _start; } - framepos_t frame() const { return _frame; } - - void set_movable (bool yn) { _movable = yn; } - bool movable() const { return _movable; } + 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; } - virtual void set_start (const Timecode::BBT_Time& w) { - _start = w; - } + void set_movable (bool yn) { _movable = yn; } + bool movable() const { return _movable; } /* MeterSections are not stateful in the full sense, but we do want them to control their own @@ -116,53 +129,124 @@ class LIBARDOUR_API MetricSection { */ virtual XMLNode& get_state() const = 0; - private: - Timecode::BBT_Time _start; + PositionLockStyle position_lock_style () const { return _position_lock_style; } + void set_position_lock_style (PositionLockStyle ps) { _position_lock_style = ps; } + +private: + double _pulse; framepos_t _frame; bool _movable; + PositionLockStyle _position_lock_style; }; /** A section of timeline with a certain Meter. */ class LIBARDOUR_API MeterSection : public MetricSection, public Meter { public: - MeterSection (const Timecode::BBT_Time& start, double bpb, double note_type) - : MetricSection (start), Meter (bpb, note_type) {} - MeterSection (framepos_t start, double bpb, double note_type) - : MetricSection (start), Meter (bpb, note_type) {} + MeterSection (double pulse, double beat, const Timecode::BBT_Time& bbt, double bpb, double note_type) + : MetricSection (pulse), Meter (bpb, note_type), _bbt (bbt), _beat (beat) {} + MeterSection (framepos_t frame, double beat, const Timecode::BBT_Time& bbt, double bpb, double note_type) + : MetricSection (frame), Meter (bpb, note_type), _bbt (bbt), _beat (beat) {} MeterSection (const XMLNode&); static const std::string xml_state_node_name; XMLNode& get_state() const; + + void set_pulse (double w) { + MetricSection::set_pulse (w); + } + void set_beat (std::pair& w) { + _beat = w.first; + _bbt = w.second; + } + + const Timecode::BBT_Time& bbt() const { return _bbt; } + const double& beat () const { return _beat; } + void set_beat (double beat) { _beat = beat; } + +private: + Timecode::BBT_Time _bbt; + double _beat; }; /** A section of timeline with a certain Tempo. */ class LIBARDOUR_API TempoSection : public MetricSection, public Tempo { public: - TempoSection (const Timecode::BBT_Time& start, double qpm, double note_type) - : MetricSection (start), Tempo (qpm, note_type), _bar_offset (-1.0) {} - TempoSection (framepos_t start, double qpm, double note_type) - : MetricSection (start), Tempo (qpm, note_type), _bar_offset (-1.0) {} + enum Type { + Ramp, + Constant, + }; + + TempoSection (const double& pulse, double qpm, double note_type, Type tempo_type) + : MetricSection (pulse), Tempo (qpm, note_type), _type (tempo_type), _c_func (0.0), _active (true), _locked_to_meter (false) {} + TempoSection (framepos_t frame, double qpm, double note_type, Type tempo_type) + : MetricSection (frame), Tempo (qpm, note_type), _type (tempo_type), _c_func (0.0), _active (true), _locked_to_meter (false) {} TempoSection (const XMLNode&); static const std::string xml_state_node_name; XMLNode& get_state() const; - void update_bar_offset_from_bbt (const Meter&); - void update_bbt_time_from_bar_offset (const Meter&); - double bar_offset() const { return _bar_offset; } + double c_func () const { return _c_func; } + void set_c_func (double c_func) { _c_func = c_func; } + + void set_type (Type type); + Type type () const { return _type; } + + bool active () const { return _active; } + void set_active (bool yn) { _active = yn; } + + 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 frameoffset_t& frame, const framecnt_t& frame_rate) const; + frameoffset_t frame_at_tempo (const double& ppm, const double& beat, const framecnt_t& frame_rate) 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_frame (const framepos_t& frame, const framecnt_t& frame_rate) const; + frameoffset_t frame_at_pulse (const double& pulse, const framecnt_t& frame_rate) 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; + + Timecode::BBT_Time legacy_bbt () { return _legacy_bbt; } private: + + frameoffset_t minute_to_frame (const double& time, const framecnt_t& frame_rate) const; + double frame_to_minute (const frameoffset_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. + */ + double a_func (double end_tpm, double c_func) const; + double c_func (double end_tpm, double end_time) const; + + double pulse_tempo_at_time (const double& time) const; + double time_at_pulse_tempo (const double& pulse_tempo) const; + + double pulse_tempo_at_pulse (const double& pulse) const; + double pulse_at_pulse_tempo (const double& pulse_tempo) const; + + double pulse_at_time (const double& time) const; + double time_at_pulse (const double& pulse) const; + /* this value provides a fractional offset into the bar in which the tempo section is located in. A value of 0.0 indicates that it occurs on the first beat of the bar, a value of 0.5 indicates that it occurs halfway through the bar and so on. - + this enables us to keep the tempo change at the same relative position within the bar if/when the meter changes. */ - double _bar_offset; + Type _type; + double _c_func; + bool _active; + bool _locked_to_meter; + Timecode::BBT_Time _legacy_bbt; }; typedef std::list Metrics; @@ -178,7 +262,7 @@ class LIBARDOUR_API TempoMetric { 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_start (const Timecode::BBT_Time& t) { _start = t; } + void set_pulse (const double& p) { _pulse = p; } void set_metric (const MetricSection* section) { const MeterSection* meter; @@ -189,22 +273,25 @@ class LIBARDOUR_API TempoMetric { set_tempo(*tempo); } - set_frame(section->frame()); - set_start(section->start()); + set_frame (section->frame()); + set_pulse (section->pulse()); } const Meter& meter() const { return *_meter; } const Tempo& tempo() const { return *_tempo; } framepos_t frame() const { return _frame; } - const Timecode::BBT_Time& start() const { return _start; } + const double& pulse() const { return _pulse; } private: const Meter* _meter; const Tempo* _tempo; framepos_t _frame; - Timecode::BBT_Time _start; + double _pulse; }; +/** Tempo Map - mapping of timecode to musical time. + * convert audio-samples, sample-rate to Bar/Beat/Tick, Meter/Tempo + */ class LIBARDOUR_API TempoMap : public PBD::StatefulDestructible { public: @@ -220,58 +307,56 @@ class LIBARDOUR_API TempoMap : public PBD::StatefulDestructible struct BBTPoint { framepos_t frame; - const MeterSection* meter; - const TempoSection* tempo; + Meter meter; + Tempo tempo; + double c; uint32_t bar; uint32_t beat; - - BBTPoint (const MeterSection& m, const TempoSection& t, framepos_t f, - uint32_t b, uint32_t e) - : frame (f), meter (&m), tempo (&t), bar (b), beat (e) {} - + + BBTPoint (const MeterSection& m, const Tempo& t, framepos_t f, + uint32_t b, uint32_t e, double func_c) + : frame (f), meter (m.note_divisor(), m.divisions_per_bar()), tempo (t.beats_per_minute(), t.note_type()), c (func_c), bar (b), beat (e) {} + Timecode::BBT_Time bbt() const { return Timecode::BBT_Time (bar, beat, 0); } operator Timecode::BBT_Time() const { return bbt(); } operator framepos_t() const { return frame; } bool is_bar() const { return beat == 1; } }; - typedef std::vector BBTPointList; - template void apply_with_metrics (T& obj, void (T::*method)(const Metrics&)) { Glib::Threads::RWLock::ReaderLock lm (lock); - (obj.*method)(metrics); + (obj.*method)(_metrics); } - void get_grid (BBTPointList::const_iterator&, BBTPointList::const_iterator&, + void get_grid (std::vector&, framepos_t start, framepos_t end); - - /* TEMPO- AND METER-SENSITIVE FUNCTIONS - bbt_time(), bbt_time_rt(), frame_time() and bbt_duration_at() + /* TEMPO- AND METER-SENSITIVE FUNCTIONS + + bbt_time(), beat_at_frame(), frame_at_beat(), tick_at_frame(), + frame_at_tick(),frame_time() and bbt_duration_at() are all sensitive to tempo and meter, and will give answers that align with the grid formed by tempo and meter sections. - - They SHOULD NOT be used to determine the position of events + + They SHOULD NOT be used to determine the position of events whose location is canonically defined in beats. */ void bbt_time (framepos_t when, Timecode::BBT_Time&); - /* realtime safe variant of ::bbt_time(), will throw - std::logic_error if the map is not large enough - to provide an answer. - */ - void bbt_time_rt (framepos_t when, Timecode::BBT_Time&); + double beat_at_frame (const framecnt_t& frame) const; + framecnt_t frame_at_beat (const double& beat) const; + framepos_t frame_time (const Timecode::BBT_Time&); framecnt_t bbt_duration_at (framepos_t, const Timecode::BBT_Time&, int dir); /* TEMPO-SENSITIVE FUNCTIONS - + These next 4 functions will all take tempo in account and should be used to determine position (and in the last case, distance in beats) when tempo matters but meter does not. - They SHOULD be used to determine the position of events + They SHOULD be used to determine the position of events whose location is canonically defined in beats. */ @@ -283,31 +368,55 @@ class LIBARDOUR_API TempoMap : public PBD::StatefulDestructible static const Tempo& default_tempo() { return _default_tempo; } static const Meter& default_meter() { return _default_meter; } - const Tempo& tempo_at (framepos_t) const; + const Tempo tempo_at (const framepos_t& frame) const; + double frames_per_beat_at (const framepos_t&, const framecnt_t& sr) const; + const Meter& meter_at (framepos_t) const; - const TempoSection& tempo_section_at (framepos_t) const; - const MeterSection& meter_section_at (framepos_t) const; + const TempoSection& tempo_section_at (framepos_t frame) const; + const MeterSection& meter_section_at (framepos_t frame) const; + const MeterSection& meter_section_at_beat (double beat) const; + + TempoSection* add_tempo (const Tempo&, const double& pulse, TempoSection::Type type); + TempoSection* add_tempo (const Tempo&, const framepos_t& frame, TempoSection::Type type); - void add_tempo (const Tempo&, Timecode::BBT_Time where); - void add_meter (const Meter&, Timecode::BBT_Time where); + MeterSection* add_meter (const Meter&, const double& beat, const Timecode::BBT_Time& where); + MeterSection* add_meter (const Meter&, const framepos_t& frame, const double& beat, const Timecode::BBT_Time& where); void remove_tempo (const TempoSection&, bool send_signal); void remove_meter (const MeterSection&, bool send_signal); - void replace_tempo (const TempoSection&, const Tempo&, const Timecode::BBT_Time& where); + framepos_t predict_tempo_frame (TempoSection* section, const Timecode::BBT_Time& bbt); + double predict_tempo_pulse (TempoSection* section, const framepos_t& frame); + + void replace_tempo (const TempoSection&, const Tempo&, const double& where, TempoSection::Type type); + void replace_tempo (const TempoSection&, const Tempo&, const framepos_t& frame, TempoSection::Type type); + + void gui_move_tempo_frame (TempoSection*, const framepos_t& frame); + void gui_move_tempo_beat (TempoSection*, const double& frame); + void gui_move_meter (MeterSection*, const framepos_t& frame); + void gui_move_meter (MeterSection*, const double& pulse); + bool gui_change_tempo (TempoSection*, const Tempo& bpm); + void gui_dilate_tempo (MeterSection*, const framepos_t& frame); + + bool can_solve_bbt (TempoSection* section, const Timecode::BBT_Time& bbt); + void replace_meter (const MeterSection&, const Meter&, const Timecode::BBT_Time& where); + void replace_meter (const MeterSection&, const Meter&, const framepos_t& frame); framepos_t round_to_bar (framepos_t frame, RoundMode dir); framepos_t round_to_beat (framepos_t frame, RoundMode dir); framepos_t round_to_beat_subdivision (framepos_t fr, int sub_num, RoundMode dir); + void round_bbt (Timecode::BBT_Time& when, const int32_t& snap_divisor); void set_length (framepos_t frames); + void fix_legacy_session(); + XMLNode& get_state (void); int set_state (const XMLNode&, int version); - void dump (std::ostream&) const; + void dump (const Metrics& metrics, std::ostream&) const; void clear (); TempoMetric metric_at (Timecode::BBT_Time bbt) const; @@ -317,62 +426,93 @@ class LIBARDOUR_API TempoMap : public PBD::StatefulDestructible */ TempoMetric metric_at (framepos_t, Metrics::const_iterator* last=NULL) const; - Metrics::const_iterator metrics_end() { return metrics.end(); } + Metrics::const_iterator metrics_end() { return _metrics.end(); } void change_existing_tempo_at (framepos_t, double bpm, double note_type); void change_initial_tempo (double bpm, double note_type); void insert_time (framepos_t, framecnt_t); bool remove_time (framepos_t where, framecnt_t amount); //returns true if anything was moved - + int n_tempos () const; int n_meters () const; framecnt_t frame_rate () const { return _frame_rate; } - private: + double bbt_to_beats (const Timecode::BBT_Time& bbt); + Timecode::BBT_Time beats_to_bbt (const double& beats); + Timecode::BBT_Time pulse_to_bbt (const double& pulse); + + double pulse_at_beat (const double& beat) const; + double beat_at_pulse (const double& pulse) const; + + double pulse_at_frame (const framecnt_t& frame) const; + framecnt_t frame_at_pulse (const double& pulse) const; + + PBD::Signal0 MetricPositionChanged; + +private: + 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 framecnt_t& frame) const; + framecnt_t frame_at_pulse_locked (const Metrics& metrics, const double& pulse) const; + + double beat_at_frame_locked (const Metrics& metrics, const framecnt_t& frame) const; + framecnt_t frame_at_beat_locked (const Metrics& metrics, const double& beat) const; + double bbt_to_beats_locked (const Metrics& metrics, const Timecode::BBT_Time& bbt) const ; + Timecode::BBT_Time beats_to_bbt_locked (const Metrics& metrics, const double& beats) const; + + framepos_t frame_time_locked (const Metrics& metrics, const Timecode::BBT_Time&) const; + + const MeterSection& meter_section_at_locked (const Metrics& metrics, framepos_t frame) const; + const TempoSection& tempo_section_at_locked (const Metrics& metrics, framepos_t frame) const; + const MeterSection& meter_section_at_beat_locked (const Metrics& metrics, const double& beat) const; + const TempoSection& tempo_section_at_beat_locked (const Metrics& metrics, const double& beat) const; + const TempoSection& tempo_section_at_pulse_locked (const Metrics& metrics, const double& pulse) const; + const Tempo tempo_at_locked (const Metrics& metrics, const framepos_t& frame) const; + + bool check_solved (const Metrics& metrics, bool by_frame) const; + bool set_active_tempos (const Metrics& metrics, const framepos_t& frame); + bool solve_map (Metrics& metrics, TempoSection* section, const framepos_t& frame); + bool solve_map (Metrics& metrics, TempoSection* section, const double& pulse); + bool solve_map (Metrics& metrics, MeterSection* section, const framepos_t& frame); + bool solve_map (Metrics& metrics, MeterSection* section, const double& pulse); friend class ::BBTTest; friend class ::FrameposPlusBeatsTest; friend class ::TempoTest; - + static Tempo _default_tempo; static Meter _default_meter; - Metrics metrics; + Metrics _metrics; framecnt_t _frame_rate; mutable Glib::Threads::RWLock lock; - BBTPointList _map; - - void recompute_map (bool reassign_tempo_bbt, framepos_t end = -1); - void extend_map (framepos_t end); - void require_map_to (framepos_t pos); - void require_map_to (const Timecode::BBT_Time&); - void _extend_map (TempoSection* tempo, MeterSection* meter, - Metrics::iterator next_metric, - Timecode::BBT_Time current, framepos_t current_frame, framepos_t end); - - BBTPointList::const_iterator bbt_before_or_at (framepos_t); - BBTPointList::const_iterator bbt_before_or_at (const Timecode::BBT_Time&); - BBTPointList::const_iterator bbt_after_or_at (framepos_t); - + + void recompute_tempos (Metrics& metrics); + void recompute_meters (Metrics& metrics); + void recompute_map (Metrics& metrics, framepos_t end = -1); + framepos_t round_to_type (framepos_t fr, RoundMode dir, BBTPointType); - void bbt_time (framepos_t, Timecode::BBT_Time&, const BBTPointList::const_iterator&); - framecnt_t bbt_duration_at_unlocked (const Timecode::BBT_Time& when, const Timecode::BBT_Time& bbt, int dir); - + const MeterSection& first_meter() const; MeterSection& first_meter(); const TempoSection& first_tempo() const; TempoSection& first_tempo(); - + void do_insert (MetricSection* section); - void add_tempo_locked (const Tempo&, Timecode::BBT_Time where, bool recompute); - void add_meter_locked (const Meter&, Timecode::BBT_Time where, bool recompute); + TempoSection* add_tempo_locked (const Tempo&, double pulse, bool recompute, TempoSection::Type type); + TempoSection* add_tempo_locked (const Tempo&, framepos_t frame, bool recompute, TempoSection::Type type); + + MeterSection* add_meter_locked (const Meter&, double beat, Timecode::BBT_Time where, bool recompute); + MeterSection* add_meter_locked (const Meter&, framepos_t frame, double beat, Timecode::BBT_Time where, bool recompute); bool remove_tempo_locked (const TempoSection&); bool remove_meter_locked (const MeterSection&); + TempoSection* copy_metrics_and_point (const Metrics& metrics, Metrics& copy, TempoSection* section); + MeterSection* copy_metrics_and_point (const Metrics& metrics, Metrics& copy, MeterSection* section); }; }; /* namespace ARDOUR */