#include <glibmm/threads.h>
#include "pbd/undo.h"
+
#include "pbd/stateful.h"
#include "pbd/statefuldestructible.h"
-#include "evoral/types.hpp"
+#include "evoral/Beats.hpp"
#include "ardour/ardour.h"
/** 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;
/** 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, framepos_t frame, PositionLockStyle pls)
+ : _pulse (pulse), _frame (frame), _movable (true), _position_lock_style (pls) {}
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
*/
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, framepos_t frame, double beat, const Timecode::BBT_Time& bbt, double bpb, double note_type, PositionLockStyle pls)
+ : MetricSection (pulse, frame, pls), 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_beat (std::pair<double, Timecode::BBT_Time>& 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, const framepos_t& frame, double qpm, double note_type, Type tempo_type, PositionLockStyle pls)
+ : MetricSection (pulse, frame, pls), 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 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_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:
+
+ 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.
+ */
+ 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<MetricSection*> Metrics;
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;
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:
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.divisions_per_bar(), m.note_divisor()), 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<BBTPoint> BBTPointList;
-
template<class T> 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<BBTPoint>&,
framepos_t start, framepos_t end);
-
- /* TEMPO- AND METER-SENSITIVE FUNCTIONS
-
- bbt_time(), bbt_time_rt(), 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
- 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&);
- 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
- whose location is canonically defined in beats.
- */
-
- framepos_t framepos_plus_bbt (framepos_t pos, Timecode::BBT_Time b) const;
- framepos_t framepos_plus_beats (framepos_t, Evoral::Beats) const;
- framepos_t framepos_minus_beats (framepos_t, Evoral::Beats) const;
- Evoral::Beats framewalk_to_beats (framepos_t pos, framecnt_t distance) const;
static const Tempo& default_tempo() { return _default_tempo; }
static const Meter& default_meter() { return _default_meter; }
- const Tempo& tempo_at (framepos_t) const;
- const Meter& meter_at (framepos_t) const;
+ /* because tempos may be ramped, this is only valid for the instant requested.*/
+ double frames_per_beat_at (const framepos_t&, const framecnt_t& sr) const;
+
+ const TempoSection& tempo_section_at_frame (framepos_t frame) const;
+ const MeterSection& meter_section_at_frame (framepos_t frame) const;
+ const MeterSection& meter_section_at_beat (double beat) const;
- const TempoSection& tempo_section_at (framepos_t) const;
- const MeterSection& meter_section_at (framepos_t) const;
+ /** add a tempo section locked to pls. ignored values will be set in recompute_tempos()
+ * @param pulse pulse position of new section. ignored if pls == AudioTime
+ * @param frame frame position of new section. ignored if pls == MusicTime
+ * @param type type of new tempo section (Ramp, Constant)
+ */
+ TempoSection* add_tempo (const Tempo&, const double& pulse, const framepos_t& frame, TempoSection::Type type, PositionLockStyle pls);
- void add_tempo (const Tempo&, Timecode::BBT_Time where);
- void add_meter (const Meter&, Timecode::BBT_Time where);
+ /** add an meter section locked to pls.. ignored values will be set in recompute_meters()
+ * @param beat beat position of new section
+ * @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);
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);
- void replace_meter (const MeterSection&, const Meter&, const Timecode::BBT_Time& where);
+ 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);
framepos_t round_to_bar (framepos_t frame, RoundMode dir);
framepos_t round_to_beat (framepos_t frame, RoundMode dir);
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;
*/
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:
+ /* TEMPO- AND METER-SENSITIVE FUNCTIONS
+
+ bbt_at_frame(), frame_at_bbt(), beat_at_frame(), frame_at_beat(), tempo_at_beat()
+ 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
+ whose location is canonically defined in beats.
+ */
+
+ double beat_at_frame (const framecnt_t& frame) const;
+ framecnt_t frame_at_beat (const double& beat) const;
+
+ Tempo tempo_at_frame (const framepos_t& frame) const;
+ framepos_t frame_at_tempo (const Tempo& tempo) const;
+
+ Tempo tempo_at_beat (const double& beat) const;
+
+ const Meter& meter_at_frame (framepos_t) const;
+
+ /* you probably only need to use pulses when moving tempos */
+ 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;
+
+ /* bbt - it's nearly always better to use beats.*/
+ Timecode::BBT_Time bbt_at_frame (framepos_t when);
+ Timecode::BBT_Time bbt_at_frame_rt (framepos_t when);
+ framepos_t frame_at_bbt (const Timecode::BBT_Time&);
+
+ double beat_at_bbt (const Timecode::BBT_Time& bbt);
+ Timecode::BBT_Time bbt_at_beat (const double& beats);
+
+ double pulse_at_bbt (const Timecode::BBT_Time& bbt);
+ Timecode::BBT_Time bbt_at_pulse (const double& pulse);
+
+ 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
+ whose location is canonically defined in beats.
+ */
+
+ framepos_t framepos_plus_bbt (framepos_t pos, Timecode::BBT_Time b) const;
+ framepos_t framepos_plus_beats (framepos_t, Evoral::Beats) const;
+ framepos_t framepos_minus_beats (framepos_t, Evoral::Beats) const;
+ Evoral::Beats framewalk_to_beats (framepos_t pos, framecnt_t distance) const;
+
+ void gui_move_tempo (TempoSection*, const framepos_t& frame);
+ void gui_move_meter (MeterSection*, const framepos_t& frame);
+ bool gui_change_tempo (TempoSection*, const Tempo& bpm);
+ void gui_dilate_tempo (TempoSection* tempo, const framepos_t& frame, const framepos_t& end_frame, const double& pulse);
+
+ std::pair<double, framepos_t> predict_tempo_position (TempoSection* section, const Timecode::BBT_Time& bbt);
+ bool can_solve_bbt (TempoSection* section, const Timecode::BBT_Time& bbt);
+
+ PBD::Signal0<void> MetricPositionChanged;
+ void fix_legacy_session();
+
+private:
+
+ 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 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;
+
+ 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;
+
+ 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;
+
+ 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;
+
+ 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;
+
+ const TempoSection& tempo_section_at_frame_locked (const Metrics& metrics, framepos_t frame) 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_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_pulse (Metrics& metrics, TempoSection* section, const double& pulse);
+ bool solve_map_frame (Metrics& metrics, MeterSection* section, const framepos_t& frame);
+ bool solve_map_bbt (Metrics& metrics, MeterSection* section, const Timecode::BBT_Time& bbt);
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, framepos_t frame
+ , 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);
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 */
projects / ardour.git / blobdiff