#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 beats_per_minute () const { return _beats_per_minute; }
+
+ double ticks_per_minute () const { return _beats_per_minute * Timecode::BBT_Time::ticks_per_beat;}
double note_type () const { return _note_type;}
+ /** audio samples per beat
+ * @param sr samplerate
+ */
double frames_per_beat (framecnt_t sr) const {
return (60.0 * sr) / _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 beat)
+ : _beat (beat), _frame (0), _movable (true), _position_lock_style (MusicTime) {}
+ MetricSection (framepos_t frame)
+ : _beat (0), _frame (frame), _movable (true), _position_lock_style (MusicTime) {}
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& beat () const { return _beat; }
+ void set_beat (double beat) { _beat = beat;}
+ 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 _beat;
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 beat, const Timecode::BBT_Time& bbt, double bpb, double note_type)
+ : MetricSection (beat), Meter (bpb, note_type), _bbt (bbt) {}
+ MeterSection (framepos_t frame, double bpb, double note_type)
+ : MetricSection (frame), Meter (bpb, note_type) {}
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) {
+ MetricSection::set_beat (w.first);
+ _bbt = w.second;
+ }
+
+ const Timecode::BBT_Time& bbt() const { return _bbt; }
+private:
+ Timecode::BBT_Time _bbt;
};
/** 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& beat, double qpm, double note_type, Type tempo_type)
+ : MetricSection (beat), Tempo (qpm, note_type), _bar_offset (-1.0), _type (tempo_type) {}
+ TempoSection (framepos_t frame, double qpm, double note_type, Type tempo_type)
+ : MetricSection (frame), Tempo (qpm, note_type), _bar_offset (-1.0), _type (tempo_type) {}
TempoSection (const XMLNode&);
static const std::string xml_state_node_name;
void update_bbt_time_from_bar_offset (const Meter&);
double bar_offset() const { return _bar_offset; }
+ void set_type (Type type);
+ Type type () const { return _type; }
+
+ double tempo_at_frame (framepos_t frame, double end_bpm, framepos_t end_frame, framecnt_t frame_rate) const;
+ framepos_t frame_at_tempo (double tempo, double end_bpm, framepos_t end_frame, framecnt_t frame_rate) const;
+
+ double tick_at_frame (framepos_t frame, double end_bpm, framepos_t end_frame, framecnt_t frame_rate) const;
+ framepos_t frame_at_tick (double tick, double end_bpm, framepos_t end_frame, framecnt_t frame_rate) const;
+
+ double beat_at_frame (framepos_t frame, double end_bpm, framepos_t end_frame, framecnt_t frame_rate) const;
+ framepos_t frame_at_beat (double beat, double end_bpm, framepos_t end_frame, framecnt_t frame_rate) const;
+
+ Timecode::BBT_Time legacy_bbt () { return _legacy_bbt; }
+
private:
+
+ framecnt_t minute_to_frame (double time, framecnt_t frame_rate) const;
+ double frame_to_minute (framecnt_t frame, 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 c_func (double end_tpm, double end_time) const;
+ double a_func (double end_tpm, double c_func) const;
+
+ double tick_tempo_at_time (double time, double end_tpm, double end_time) const;
+ double time_at_tick_tempo (double tick_tempo, double end_tpm, double end_time) const;
+
+ double tick_at_time (double time, double end_tpm, double end_time) const;
+ double time_at_tick (double tick, double end_tpm, double end_time) const;
+
+ double beat_at_time (double time, double end_tpm, double end_time) const;
+ double time_at_beat (double beat, double end_tpm, double end_time) 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;
+ 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_beat (const double& t) { _beat = t; }
void set_metric (const MetricSection* section) {
const MeterSection* meter;
}
set_frame(section->frame());
- set_start(section->start());
+ set_beat(section->beat());
}
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& beat() const { return _beat; }
private:
const Meter* _meter;
const Tempo* _tempo;
framepos_t _frame;
- Timecode::BBT_Time _start;
+ double _beat;
};
+/** 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;
+ const Tempo* tempo;
uint32_t bar;
uint32_t beat;
- BBTPoint (const MeterSection& m, const TempoSection& t, framepos_t f,
+ BBTPoint (const MeterSection& m, const Tempo& t, framepos_t f,
uint32_t b, uint32_t e)
: frame (f), meter (&m), tempo (&t), 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);
}
- 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()
+ 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
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 tick_at_frame (framecnt_t frame) const;
+ framecnt_t frame_at_tick (double tick) const;
+
+ double beat_at_frame (framecnt_t frame) const;
+ framecnt_t frame_at_beat (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.
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 (framepos_t) const;
+ double frames_per_beat_at (framepos_t, 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;
- void add_tempo (const Tempo&, Timecode::BBT_Time where);
- void add_meter (const Meter&, Timecode::BBT_Time where);
+ void add_tempo (const Tempo&, double where, TempoSection::Type type);
+ void add_meter (const Meter&, double beat, 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);
+ void replace_tempo (const TempoSection&, const Tempo&, const double& where, TempoSection::Type type);
+ void gui_set_tempo_frame (TempoSection&, framepos_t where, double beat);
void replace_meter (const MeterSection&, const Meter&, const Timecode::BBT_Time& where);
framepos_t round_to_bar (framepos_t frame, RoundMode dir);
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:
+ PBD::Signal0<void> MetricPositionChanged;
+
+ double bbt_to_beats (Timecode::BBT_Time bbt);
+ Timecode::BBT_Time beats_to_bbt (double beats);
+
+private:
+ double bbt_to_beats_unlocked (Timecode::BBT_Time bbt);
+ Timecode::BBT_Time beats_to_bbt_unlocked (double beats);
friend class ::BBTTest;
friend class ::FrameposPlusBeatsTest;
friend class ::TempoTest;
-
+
static Tempo _default_tempo;
static Meter _default_meter;
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);
-
+
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);
+ void add_tempo_locked (const Tempo&, double where, bool recompute, TempoSection::Type type);
+ void add_meter_locked (const Meter&, double beat, Timecode::BBT_Time where, bool recompute);
bool remove_tempo_locked (const TempoSection&);
bool remove_meter_locked (const MeterSection&);