const string TempoSection::xml_state_node_name = "Tempo";
TempoSection::TempoSection (const XMLNode& node)
- : MetricSection (0.0), Tempo (TempoMap::default_tempo())
+ : MetricSection (0.0)
+ , Tempo (TempoMap::default_tempo())
+ , _c_func (0.0)
+ , _active (true)
{
const XMLProperty *prop;
LocaleGuard lg;
double pulse;
uint32_t frame;
+ _legacy_bbt = BBT_Time (0, 0, 0);
+
if ((prop = node.property ("start")) != 0) {
if (sscanf (prop->value().c_str(), "%" PRIu32 "|%" PRIu32 "|%" PRIu32,
&bbt.bars,
/* legacy session - start used to be in bbt*/
_legacy_bbt = bbt;
pulse = -1.0;
- set_pulse (pulse);
+ info << _("Legacy session detected. TempoSection XML node will be altered.") << endmsg;
}
- } else {
- warning << _("TempoSection XML node has no \"start\" property") << endmsg;
}
-
if ((prop = node.property ("pulse")) != 0) {
- if (sscanf (prop->value().c_str(), "%lf", &pulse) != 1 || pulse < 0.0) {
- error << _("TempoSection XML node has an illegal \"beat\" value") << endmsg;
- } else {
- set_pulse (pulse);
+ if (sscanf (prop->value().c_str(), "%lf", &pulse) != 1) {
+ error << _("TempoSection XML node has an illegal \"pulse\" value") << endmsg;
}
}
+
+ set_pulse (pulse);
+
if ((prop = node.property ("frame")) != 0) {
if (sscanf (prop->value().c_str(), "%" PRIu32, &frame) != 1) {
error << _("TempoSection XML node has an illegal \"frame\" value") << endmsg;
set_active (string_is_affirmative (prop->value()));
}
- if ((prop = node.property ("bar-offset")) == 0) {
- _bar_offset = -1.0;
- } else {
- if (sscanf (prop->value().c_str(), "%lf", &_bar_offset) != 1 || _bar_offset < 0.0) {
- error << _("TempoSection XML node has an illegal \"bar-offset\" value") << endmsg;
- throw failed_constructor();
- }
- }
-
if ((prop = node.property ("tempo-type")) == 0) {
_type = Constant;
} else {
}
if ((prop = node.property ("lock-style")) == 0) {
- set_position_lock_style (MusicTime);
+ if (movable()) {
+ set_position_lock_style (MusicTime);
+ } else {
+ set_position_lock_style (AudioTime);
+ }
} else {
set_position_lock_style (PositionLockStyle (string_2_enum (prop->value(), position_lock_style())));
}
root->add_property ("beats-per-minute", buf);
snprintf (buf, sizeof (buf), "%f", _note_type);
root->add_property ("note-type", buf);
- // snprintf (buf, sizeof (buf), "%f", _bar_offset);
- // root->add_property ("bar-offset", buf);
snprintf (buf, sizeof (buf), "%s", movable()?"yes":"no");
root->add_property ("movable", buf);
snprintf (buf, sizeof (buf), "%s", active()?"yes":"no");
return *root;
}
-void
-
-TempoSection::update_bar_offset_from_bbt (const Meter& m)
-{
- _bar_offset = (pulse() * BBT_Time::ticks_per_beat) /
- (m.divisions_per_bar() * BBT_Time::ticks_per_beat);
-
- DEBUG_TRACE (DEBUG::TempoMath, string_compose ("Tempo set bar offset to %1 from %2 w/%3\n", _bar_offset, pulse(), m.divisions_per_bar()));
-}
-
void
TempoSection::set_type (Type type)
{
TempoSection::tempo_at_frame (const framepos_t& f, const framecnt_t& frame_rate) const
{
- if (_type == Constant) {
+ if (_type == Constant || _c_func == 0.0) {
return pulses_per_minute();
}
framepos_t
TempoSection::frame_at_tempo (const double& ppm, const double& b, const framecnt_t& frame_rate) const
{
- if (_type == Constant) {
+ if (_type == Constant || _c_func == 0.0) {
return ((b - pulse()) * frames_per_pulse (frame_rate)) + frame();
}
TempoSection::tempo_at_pulse (const double& p) const
{
- if (_type == Constant) {
+ if (_type == Constant || _c_func == 0.0) {
return pulses_per_minute();
}
double const ppm = pulse_tempo_at_pulse (p - pulse());
double
TempoSection::pulse_at_tempo (const double& ppm, const framepos_t& f, const framecnt_t& frame_rate) const
{
- if (_type == Constant) {
- double const beats = ((f - frame()) / frames_per_pulse (frame_rate)) + pulse();
- return beats;
+ if (_type == Constant || _c_func == 0.0) {
+ double const pulses = ((f - frame()) / frames_per_pulse (frame_rate)) + pulse();
+ return pulses;
}
-
return pulse_at_pulse_tempo (ppm) + pulse();
}
double
TempoSection::pulse_at_frame (const framepos_t& f, const framecnt_t& frame_rate) const
{
- if (_type == Constant) {
+ if (_type == Constant || _c_func == 0.0) {
return ((f - frame()) / frames_per_pulse (frame_rate)) + pulse();
}
framepos_t
TempoSection::frame_at_pulse (const double& p, const framecnt_t& frame_rate) const
{
- if (_type == Constant) {
+ if (_type == Constant || _c_func == 0.0) {
return (framepos_t) floor ((p - pulse()) * frames_per_pulse (frame_rate)) + frame();
}
TempoSection::compute_c_func_pulse (const double& end_bpm, const double& end_pulse, const framecnt_t& frame_rate)
{
double const log_tempo_ratio = log (end_bpm / pulses_per_minute());
- return pulses_per_minute() * (exp (log_tempo_ratio) - 1) / (end_pulse - pulse());
+ return pulses_per_minute() * (expm1 (log_tempo_ratio)) / (end_pulse - pulse());
}
/* compute the function constant from some later tempo section, given tempo (whole pulses/min.) and distance (in frames) from session origin */
double
TempoSection::pulse_at_time (const double& time) const
{
- return ((exp (_c_func * time)) - 1) * (pulses_per_minute() / _c_func);
+ return expm1 (_c_func * time) * (pulses_per_minute() / _c_func);
}
/* time in minutes at pulse */
double
TempoSection::time_at_pulse (const double& pulse) const
{
- return log (((_c_func * pulse) / pulses_per_minute()) + 1) / _c_func;
-}
-
-
-void
-TempoSection::update_bbt_time_from_bar_offset (const Meter& meter)
-{
- double new_beat;
-
- if (_bar_offset < 0.0) {
- /* not set yet */
- return;
- }
-
- new_beat = pulse();
-
- double ticks = BBT_Time::ticks_per_beat * meter.divisions_per_bar() * _bar_offset;
- new_beat = ticks / BBT_Time::ticks_per_beat;
-
- DEBUG_TRACE (DEBUG::TempoMath, string_compose ("from bar offset %1 and dpb %2, ticks = %3->%4 beats = %5\n",
- _bar_offset, meter.divisions_per_bar(), ticks, new_beat, new_beat));
-
- set_pulse (new_beat);
+ return log1p ((_c_func * pulse) / pulses_per_minute()) / _c_func;
}
/***********************************************************************/
error << _("MeterSection XML node has an illegal \"start\" value") << endmsg;
} else {
/* legacy session - start used to be in bbt*/
+ info << _("Legacy session detected - MeterSection XML node will be altered.") << endmsg;
pulse = -1.0;
}
- } else {
- error << _("MeterSection XML node has no \"start\" property") << endmsg;
}
if ((prop = node.property ("pulse")) != 0) {
- if (sscanf (prop->value().c_str(), "%lf", &pulse) != 1 || pulse < 0.0) {
+ if (sscanf (prop->value().c_str(), "%lf", &pulse) != 1) {
error << _("MeterSection XML node has an illegal \"pulse\" value") << endmsg;
}
}
if ((prop = node.property ("beat")) != 0) {
if (sscanf (prop->value().c_str(), "%lf", &beat) != 1) {
- error << _("MeterSection XML node has an illegal \"beat\" vlue") << endmsg;
+ error << _("MeterSection XML node has an illegal \"beat\" value") << endmsg;
}
}
start.first = beat;
if ((prop = node.property ("bbt")) == 0) {
- error << _("MeterSection XML node has no \"bbt\" property") << endmsg;
+ warning << _("MeterSection XML node has no \"bbt\" property") << endmsg;
} else if (sscanf (prop->value().c_str(), "%" PRIu32 "|%" PRIu32 "|%" PRIu32,
&bbt.bars,
&bbt.beats,
&bbt.ticks) < 3) {
error << _("MeterSection XML node has an illegal \"bbt\" value") << endmsg;
- //throw failed_constructor();
+ throw failed_constructor();
}
start.second = bbt;
throw failed_constructor();
}
- if ((prop = node.property ("lock-style")) == 0) {
- warning << _("MeterSection XML node has no \"lock-style\" property") << endmsg;
- set_position_lock_style (MusicTime);
- } else {
- set_position_lock_style (PositionLockStyle (string_2_enum (prop->value(), position_lock_style())));
- }
-
if ((prop = node.property ("movable")) == 0) {
error << _("MeterSection XML node has no \"movable\" property") << endmsg;
throw failed_constructor();
}
set_movable (string_is_affirmative (prop->value()));
+
+ if ((prop = node.property ("lock-style")) == 0) {
+ warning << _("MeterSection XML node has no \"lock-style\" property") << endmsg;
+ if (movable()) {
+ set_position_lock_style (MusicTime);
+ } else {
+ set_position_lock_style (AudioTime);
+ }
+ } else {
+ set_position_lock_style (PositionLockStyle (string_2_enum (prop->value(), position_lock_style())));
+ }
}
XMLNode&
}
/***********************************************************************/
+/*
+ Tempo Map Overview
+
+ Tempo can be thought of as a source of the musical pulse.
+ Meters divide that pulse into measures and beats.
+ Tempo pulses can be divided to be in sympathy with the meter, but this does not affect the beat
+ at any particular time.
+ Note that Tempo::beats_per_minute() has nothing to do with musical beats.
+ It should rather be thought of as tempo note divisions per minute.
+
+ TempoSections, which are nice to think of in whole pulses per minute,
+ and MeterSecions which divide tempo pulses into measures (via divisions_per_bar)
+ and beats (via note_divisor) are used to form a tempo map.
+ TempoSections and MeterSections may be locked to either audio or music (position lock style).
+ We construct the tempo map by first using the frame or pulse position (depending on position lock style) of each tempo.
+ We then use this pulse/frame layout to find the beat & pulse or frame position of each meter (again depending on lock style).
+
+ Having done this, we can now find any one of tempo, beat, frame or pulse if a beat, frame, pulse or tempo is known.
+
+ The first tempo and first meter are special. they must move together, and must be locked to audio.
+ Audio locked tempos which lie before the first meter are made inactive.
+ They will be re-activated if the first meter is again placed before them.
+
+ Both tempos and meters have a pulse position and a frame position.
+ Meters also have a beat position, which is always 0.0 for the first meter.
+
+ A tempo locked to music is locked to musical pulses.
+ A meter locked to music is locked to beats.
+ Recomputing the tempo map is the process where the 'missing' position
+ (tempo pulse or meter pulse & beat in the case of AudioTime, frame for MusicTime) is calculated.
+
+ It is important to keep the _metrics in an order that makes sense.
+ Because ramped MusicTime and AudioTime tempos can interact with each other,
+ reordering is frequent. Care must be taken to keep _metrics in a solved state.
+ Solved means ordered by frame or pulse with frame-accurate precision (see check_solved()).
+*/
struct MetricSectionSorter {
bool operator() (const MetricSection* a, const MetricSection* b) {
return a->pulse() < b->pulse();
_frame_rate = fr;
BBT_Time start (1, 1, 0);
- TempoSection *t = new TempoSection (0.0, _default_tempo.beats_per_minute(), _default_tempo.note_type(), TempoSection::Constant);
- MeterSection *m = new MeterSection (0.0, 0.0, start, _default_meter.divisions_per_bar(), _default_meter.note_divisor());
+ TempoSection *t = new TempoSection ((framepos_t) 0, _default_tempo.beats_per_minute(), _default_tempo.note_type(), TempoSection::Constant);
+ MeterSection *m = new MeterSection ((framepos_t) 0, 0.0, start, _default_meter.divisions_per_bar(), _default_meter.note_divisor());
t->set_movable (false);
m->set_movable (false);
*(dynamic_cast<Tempo*>(*i)) = *(dynamic_cast<Tempo*>(insert_tempo));
(*i)->set_position_lock_style (AudioTime);
+ TempoSection* t;
+ if ((t = dynamic_cast<TempoSection*>(*i)) != 0) {
+ t->set_type (insert_tempo->type());
+ }
need_add = false;
} else {
_metrics.erase (i);
bool const ipm = insert_meter->position_lock_style() == MusicTime;
- if ((ipm && meter->pulse() == insert_meter->pulse()) || (!ipm && meter->frame() == insert_meter->frame())) {
+ if ((ipm && meter->beat() == insert_meter->beat()) || (!ipm && meter->frame() == insert_meter->frame())) {
if (!meter->movable()) {
*/
*(dynamic_cast<Meter*>(*i)) = *(dynamic_cast<Meter*>(insert_meter));
- (*i)->set_position_lock_style (insert_meter->position_lock_style());
+ (*i)->set_position_lock_style (AudioTime);
need_add = false;
} else {
_metrics.erase (i);
-
}
break;
if (meter) {
bool const ipm = insert_meter->position_lock_style() == MusicTime;
- if ((ipm && meter->pulse() > insert_meter->pulse()) || (!ipm && meter->frame() > insert_meter->frame())) {
+ if ((ipm && meter->beat() > insert_meter->beat()) || (!ipm && meter->frame() > insert_meter->frame())) {
break;
}
}
PropertyChanged (PropertyChange ());
}
-void
+TempoSection*
TempoMap::add_tempo (const Tempo& tempo, const double& pulse, ARDOUR::TempoSection::Type type)
{
+ TempoSection* ts = 0;
{
Glib::Threads::RWLock::WriterLock lm (lock);
- add_tempo_locked (tempo, pulse, true, type);
+ ts = add_tempo_locked (tempo, pulse, true, type);
}
PropertyChanged (PropertyChange ());
+
+ return ts;
}
-void
+TempoSection*
TempoMap::add_tempo (const Tempo& tempo, const framepos_t& frame, ARDOUR::TempoSection::Type type)
{
+ TempoSection* ts = 0;
{
Glib::Threads::RWLock::WriterLock lm (lock);
- add_tempo_locked (tempo, frame, true, type);
+ ts = add_tempo_locked (tempo, frame, true, type);
}
PropertyChanged (PropertyChange ());
+
+ return ts;
}
-void
+TempoSection*
TempoMap::add_tempo_locked (const Tempo& tempo, double pulse, bool recompute, ARDOUR::TempoSection::Type type)
{
- TempoSection* ts = new TempoSection (pulse, tempo.beats_per_minute(), tempo.note_type(), type);
+ TempoSection* t = new TempoSection (pulse, tempo.beats_per_minute(), tempo.note_type(), type);
- do_insert (ts);
+ do_insert (t);
if (recompute) {
- solve_map (_metrics, ts, Tempo (ts->beats_per_minute(), ts->note_type()), ts->pulse());
+ solve_map (_metrics, t, t->pulse());
}
+
+ return t;
}
-void
+TempoSection*
TempoMap::add_tempo_locked (const Tempo& tempo, framepos_t frame, bool recompute, ARDOUR::TempoSection::Type type)
{
- TempoSection* ts = new TempoSection (frame, tempo.beats_per_minute(), tempo.note_type(), type);
+ TempoSection* t = new TempoSection (frame, tempo.beats_per_minute(), tempo.note_type(), type);
- do_insert (ts);
+ do_insert (t);
if (recompute) {
- solve_map (_metrics, ts, Tempo (ts->beats_per_minute(), ts->note_type()), ts->frame());
+ solve_map (_metrics, t, t->frame());
}
+
+ return t;
}
void
{
{
Glib::Threads::RWLock::WriterLock lm (lock);
- MeterSection& first (first_meter());
- TempoSection& first_t (first_tempo());
- const PositionLockStyle pl = ms.position_lock_style();
- if (ms.pulse() != first.pulse()) {
+ if (ms.movable()) {
remove_meter_locked (ms);
- add_meter_locked (meter, pulse_at_beat_locked (_metrics, bbt_to_beats_locked (_metrics, where)), where, true);
+ add_meter_locked (meter, bbt_to_beats_locked (_metrics, where), where, true);
} else {
+ MeterSection& first (first_meter());
/* cannot move the first meter section */
*static_cast<Meter*>(&first) = meter;
- first.set_position_lock_style (pl);
- recompute_map (_metrics);
+ first.set_position_lock_style (AudioTime);
}
+ recompute_map (_metrics);
}
PropertyChanged (PropertyChange ());
{
{
Glib::Threads::RWLock::WriterLock lm (lock);
- MeterSection& first (first_meter());
- TempoSection& first_t (first_tempo());
- const PositionLockStyle pl = ms.position_lock_style();
- if (ms.pulse() != first.pulse()) {
+ const double beat = ms.beat();
+ const BBT_Time bbt = ms.bbt();
+
+ if (ms.movable()) {
remove_meter_locked (ms);
- add_meter_locked (meter, frame, true);
+ add_meter_locked (meter, frame, beat, bbt, true);
} else {
+ MeterSection& first (first_meter());
+ TempoSection& first_t (first_tempo());
/* cannot move the first meter section */
*static_cast<Meter*>(&first) = meter;
first.set_position_lock_style (AudioTime);
first.set_frame (frame);
pair<double, BBT_Time> beat = make_pair (0.0, BBT_Time (1, 1, 0));
first.set_beat (beat);
- recompute_meters (_metrics);
first_t.set_frame (first.frame());
first_t.set_pulse (0.0);
first_t.set_position_lock_style (AudioTime);
-
- recompute_map (_metrics);
}
+ recompute_map (_metrics);
}
PropertyChanged (PropertyChange ());
}
-void
+MeterSection*
TempoMap::add_meter (const Meter& meter, const double& beat, const BBT_Time& where)
{
+ MeterSection* m = 0;
{
Glib::Threads::RWLock::WriterLock lm (lock);
- add_meter_locked (meter, beat, where, true);
+ m = add_meter_locked (meter, beat, where, true);
}
#endif
PropertyChanged (PropertyChange ());
+
+ return m;
}
-void
-TempoMap::add_meter (const Meter& meter, const framepos_t& frame)
+MeterSection*
+TempoMap::add_meter (const Meter& meter, const framepos_t& frame, const double& beat, const Timecode::BBT_Time& where)
{
+ MeterSection* m = 0;
{
Glib::Threads::RWLock::WriterLock lm (lock);
- add_meter_locked (meter, frame, true);
+ m = add_meter_locked (meter, frame, beat, where, true);
}
#endif
PropertyChanged (PropertyChange ());
+
+ return m;
}
-void
+MeterSection*
TempoMap::add_meter_locked (const Meter& meter, double beat, BBT_Time where, bool recompute)
{
/* a new meter always starts a new bar on the first beat. so
}
/* new meters *always* start on a beat. */
where.ticks = 0;
- double pulse = pulse_at_beat_locked (_metrics, beat);
-
+ const double pulse = pulse_at_beat_locked (_metrics, beat);
MeterSection* new_meter = new MeterSection (pulse, beat, where, meter.divisions_per_bar(), meter.note_divisor());
do_insert (new_meter);
if (recompute) {
- solve_map (_metrics, new_meter, Meter (meter.divisions_per_bar(), meter.note_divisor()), pulse);
+ solve_map (_metrics, new_meter, pulse);
}
+ return new_meter;
}
-void
-TempoMap::add_meter_locked (const Meter& meter, framepos_t frame, bool recompute)
+MeterSection*
+TempoMap::add_meter_locked (const Meter& meter, framepos_t frame, double beat, Timecode::BBT_Time where, bool recompute)
{
+ MeterSection* new_meter = new MeterSection (frame, beat, where, meter.divisions_per_bar(), meter.note_divisor());
- MeterSection* new_meter = new MeterSection (frame, 0.0, meter.divisions_per_bar(), meter.note_divisor());
+ double pulse = pulse_at_frame_locked (_metrics, frame);
+ new_meter->set_pulse (pulse);
do_insert (new_meter);
if (recompute) {
- solve_map (_metrics, new_meter, Meter (new_meter->divisions_per_bar(), new_meter->note_divisor()), frame);
+ solve_map (_metrics, new_meter, frame);
}
+ return new_meter;
}
-/**
-* This is for a gui that needs to know the frame of a tempo section if it were to be moved to some bbt time,
-* taking any possible reordering as a consequence of this into account.
-* @param section - the section to be altered
-* @param bpm - the new Tempo
-* @param bbt - the bbt where the altered tempo will fall
-* @return returns - the position in frames where the new tempo section will lie.
-*/
-framepos_t
-TempoMap::predict_tempo_frame (TempoSection* section, const Tempo& bpm, const BBT_Time& bbt)
+void
+TempoMap::change_initial_tempo (double beats_per_minute, double note_type)
{
- Glib::Threads::RWLock::ReaderLock lm (lock);
- Metrics future_map;
- framepos_t ret = 0;
- TempoSection* new_section = copy_metrics_and_point (future_map, section);
-
- double const beat = bbt_to_beats_locked (future_map, bbt);
- if (solve_map (future_map, new_section, bpm, pulse_at_beat_locked (future_map, beat))) {
- ret = new_section->frame();
- } else {
- ret = frame_at_beat_locked (_metrics, beat);
- }
+ Tempo newtempo (beats_per_minute, note_type);
+ TempoSection* t;
- Metrics::const_iterator d = future_map.begin();
- while (d != future_map.end()) {
- delete (*d);
- ++d;
+ for (Metrics::iterator i = _metrics.begin(); i != _metrics.end(); ++i) {
+ if ((t = dynamic_cast<TempoSection*> (*i)) != 0) {
+ if (!t->active()) {
+ continue;
+ }
+ {
+ Glib::Threads::RWLock::WriterLock lm (lock);
+ *((Tempo*) t) = newtempo;
+ recompute_map (_metrics);
+ }
+ PropertyChanged (PropertyChange ());
+ break;
+ }
}
- return ret;
}
-double
-TempoMap::predict_tempo_pulse (TempoSection* section, const Tempo& bpm, const framepos_t& frame)
+void
+TempoMap::change_existing_tempo_at (framepos_t where, double beats_per_minute, double note_type)
{
- Glib::Threads::RWLock::ReaderLock lm (lock);
- Metrics future_map;
- double ret = 0.0;
- TempoSection* new_section = copy_metrics_and_point (future_map, section);
+ Tempo newtempo (beats_per_minute, note_type);
- if (solve_map (future_map, new_section, bpm, frame)) {
- ret = new_section->pulse();
- } else {
- ret = pulse_at_frame_locked (_metrics, frame);
- }
+ TempoSection* prev;
+ TempoSection* first;
+ Metrics::iterator i;
- Metrics::const_iterator d = future_map.begin();
- while (d != future_map.end()) {
- delete (*d);
- ++d;
- }
- return ret;
-}
+ /* find the TempoSection immediately preceding "where"
+ */
-void
-TempoMap::gui_move_tempo_frame (TempoSection* ts, const Tempo& bpm, const framepos_t& frame)
-{
- Metrics future_map;
- {
- Glib::Threads::RWLock::WriterLock lm (lock);
- TempoSection* new_section = copy_metrics_and_point (future_map, ts);
- if (solve_map (future_map, new_section, bpm, frame)) {
- solve_map (_metrics, ts, bpm, frame);
- }
- }
+ for (first = 0, i = _metrics.begin(), prev = 0; i != _metrics.end(); ++i) {
- Metrics::const_iterator d = future_map.begin();
- while (d != future_map.end()) {
- delete (*d);
- ++d;
- }
+ if ((*i)->frame() > where) {
+ break;
+ }
- MetricPositionChanged (); // Emit Signal
-}
+ TempoSection* t;
-void
-TempoMap::gui_move_tempo_beat (TempoSection* ts, const Tempo& bpm, const double& beat)
-{
- Metrics future_map;
- {
- Glib::Threads::RWLock::WriterLock lm (lock);
- TempoSection* new_section = copy_metrics_and_point (future_map, ts);
- if (solve_map (future_map, new_section, bpm, pulse_at_beat_locked (future_map, beat))) {
- solve_map (_metrics, ts, bpm, beat);
+ if ((t = dynamic_cast<TempoSection*>(*i)) != 0) {
+ if (!t->active()) {
+ continue;
+ }
+ if (!first) {
+ first = t;
+ }
+ prev = t;
}
}
- Metrics::const_iterator d = future_map.begin();
- while (d != future_map.end()) {
- delete (*d);
- ++d;
- }
-
- MetricPositionChanged (); // Emit Signal
-}
+ if (!prev) {
+ if (!first) {
+ error << string_compose (_("no tempo sections defined in tempo map - cannot change tempo @ %1"), where) << endmsg;
+ return;
+ }
-void
-TempoMap::gui_move_meter (MeterSection* ms, const Meter& mt, const framepos_t& frame)
-{
- {
- Glib::Threads::RWLock::WriterLock lm (lock);
- solve_map (_metrics, ms, mt, frame);
+ prev = first;
}
- MetricPositionChanged (); // Emit Signal
-}
+ /* reset */
-void
-TempoMap::gui_move_meter (MeterSection* ms, const Meter& mt, const double& beat)
-{
{
Glib::Threads::RWLock::WriterLock lm (lock);
- solve_map (_metrics, ms, mt, pulse_at_beat_locked (_metrics, beat));
+ /* cannot move the first tempo section */
+ *((Tempo*)prev) = newtempo;
+ recompute_map (_metrics);
}
- MetricPositionChanged (); // Emit Signal
+ PropertyChanged (PropertyChange ());
}
-bool
-TempoMap::gui_change_tempo (TempoSection* ts, const Tempo& bpm)
+const MeterSection&
+TempoMap::first_meter () const
{
- Metrics future_map;
- bool can_solve = false;
- {
- Glib::Threads::RWLock::WriterLock lm (lock);
- TempoSection* new_section = copy_metrics_and_point (future_map, ts);
- new_section->set_beats_per_minute (bpm.beats_per_minute());
- recompute_tempos (future_map);
+ const MeterSection *m = 0;
- if (check_solved (future_map, true)) {
- ts->set_beats_per_minute (bpm.beats_per_minute());
- recompute_map (_metrics);
- can_solve = true;
+ for (Metrics::const_iterator i = _metrics.begin(); i != _metrics.end(); ++i) {
+ if ((m = dynamic_cast<const MeterSection *> (*i)) != 0) {
+ return *m;
}
}
- Metrics::const_iterator d = future_map.begin();
- while (d != future_map.end()) {
- delete (*d);
- ++d;
- }
- if (can_solve) {
- MetricPositionChanged (); // Emit Signal
- }
- return can_solve;
+ fatal << _("programming error: no meter section in tempo map!") << endmsg;
+ abort(); /*NOTREACHED*/
+ return *m;
}
-TempoSection*
-TempoMap::copy_metrics_and_point (Metrics& copy, TempoSection* section)
+MeterSection&
+TempoMap::first_meter ()
{
- TempoSection* t;
- TempoSection* ret = 0;
- MeterSection* m;
-
- for (Metrics::iterator i = _metrics.begin(); i != _metrics.end(); ++i) {
- if ((t = dynamic_cast<TempoSection*> (*i)) != 0) {
- if (t == section) {
- if (t->position_lock_style() == MusicTime) {
- ret = new TempoSection (t->pulse(), t->beats_per_minute(), t->note_type(), t->type());
- } else {
- ret = new TempoSection (t->frame(), t->beats_per_minute(), t->note_type(), t->type());
- }
- ret->set_active (t->active());
- ret->set_movable (t->movable());
- copy.push_back (ret);
- continue;
- }
- TempoSection* cp = 0;
- if (t->position_lock_style() == MusicTime) {
- cp = new TempoSection (t->pulse(), t->beats_per_minute(), t->note_type(), t->type());
- } else {
- cp = new TempoSection (t->frame(), t->beats_per_minute(), t->note_type(), t->type());
- }
- cp->set_active (t->active());
- cp->set_movable (t->movable());
- copy.push_back (cp);
- }
- if ((m = dynamic_cast<MeterSection *> (*i)) != 0) {
- if (m->position_lock_style() == MusicTime) {
- copy.push_back (new MeterSection (m->pulse(), m->beat(), m->bbt(), m->divisions_per_bar(), m->note_divisor()));
- } else {
- copy.push_back (new MeterSection (m->frame(), m->beat(), m->divisions_per_bar(), m->note_divisor()));
- }
- }
- }
- recompute_map (copy);
- return ret;
-}
-
-bool
-TempoMap::can_solve_bbt (TempoSection* ts, const Tempo& bpm, const BBT_Time& bbt)
-{
- Metrics copy;
- TempoSection* new_section = 0;
-
- {
- Glib::Threads::RWLock::ReaderLock lm (lock);
- new_section = copy_metrics_and_point (copy, ts);
- }
-
- double const beat = bbt_to_beats_locked (copy, bbt);
- bool ret = solve_map (copy, new_section, bpm, pulse_at_beat_locked (copy, beat));
-
- Metrics::const_iterator d = copy.begin();
- while (d != copy.end()) {
- delete (*d);
- ++d;
- }
-
- return ret;
-}
-
-void
-TempoMap::change_initial_tempo (double beats_per_minute, double note_type)
-{
- Tempo newtempo (beats_per_minute, note_type);
- TempoSection* t;
-
- for (Metrics::iterator i = _metrics.begin(); i != _metrics.end(); ++i) {
- if ((t = dynamic_cast<TempoSection*> (*i)) != 0) {
- if (!t->active()) {
- continue;
- }
- {
- Glib::Threads::RWLock::WriterLock lm (lock);
- *((Tempo*) t) = newtempo;
- recompute_map (_metrics);
- }
- PropertyChanged (PropertyChange ());
- break;
- }
- }
-}
-
-void
-TempoMap::change_existing_tempo_at (framepos_t where, double beats_per_minute, double note_type)
-{
- Tempo newtempo (beats_per_minute, note_type);
-
- TempoSection* prev;
- TempoSection* first;
- Metrics::iterator i;
-
- /* find the TempoSection immediately preceding "where"
- */
-
- for (first = 0, i = _metrics.begin(), prev = 0; i != _metrics.end(); ++i) {
-
- if ((*i)->frame() > where) {
- break;
- }
-
- TempoSection* t;
-
- if ((t = dynamic_cast<TempoSection*>(*i)) != 0) {
- if (!t->active()) {
- continue;
- }
- if (!first) {
- first = t;
- }
- prev = t;
- }
- }
-
- if (!prev) {
- if (!first) {
- error << string_compose (_("no tempo sections defined in tempo map - cannot change tempo @ %1"), where) << endmsg;
- return;
- }
-
- prev = first;
- }
-
- /* reset */
-
- {
- Glib::Threads::RWLock::WriterLock lm (lock);
- /* cannot move the first tempo section */
- *((Tempo*)prev) = newtempo;
- recompute_map (_metrics);
- }
-
- PropertyChanged (PropertyChange ());
-}
-
-const MeterSection&
-TempoMap::first_meter () const
-{
- const MeterSection *m = 0;
-
- for (Metrics::const_iterator i = _metrics.begin(); i != _metrics.end(); ++i) {
- if ((m = dynamic_cast<const MeterSection *> (*i)) != 0) {
- return *m;
- }
- }
-
- fatal << _("programming error: no meter section in tempo map!") << endmsg;
- abort(); /*NOTREACHED*/
- return *m;
-}
-
-MeterSection&
-TempoMap::first_meter ()
-{
- MeterSection *m = 0;
+ MeterSection *m = 0;
/* CALLER MUST HOLD LOCK */
if (!t->active()) {
continue;
}
- return *t;
+ if (!t->movable()) {
+ return *t;
+ }
}
}
if (!t->active()) {
continue;
}
- return *t;
+ if (!t->movable()) {
+ return *t;
+ }
}
}
void
TempoMap::recompute_tempos (Metrics& metrics)
{
- TempoSection* prev_ts = 0;
+ TempoSection* prev_t = 0;
for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
TempoSection* t;
if (!t->active()) {
continue;
}
- if (prev_ts) {
+ if (!t->movable()) {
+ t->set_pulse (0.0);
+ prev_t = t;
+ continue;
+ }
+ if (prev_t) {
if (t->position_lock_style() == AudioTime) {
- prev_ts->set_c_func (prev_ts->compute_c_func_frame (t->pulses_per_minute(), t->frame(), _frame_rate));
- t->set_pulse (prev_ts->pulse_at_tempo (t->pulses_per_minute(), t->frame(), _frame_rate));
+ prev_t->set_c_func (prev_t->compute_c_func_frame (t->pulses_per_minute(), t->frame(), _frame_rate));
+ t->set_pulse (prev_t->pulse_at_tempo (t->pulses_per_minute(), t->frame(), _frame_rate));
} else {
- prev_ts->set_c_func (prev_ts->compute_c_func_pulse (t->pulses_per_minute(), t->pulse(), _frame_rate));
- t->set_frame (prev_ts->frame_at_tempo (t->pulses_per_minute(), t->pulse(), _frame_rate));
+ prev_t->set_c_func (prev_t->compute_c_func_pulse (t->pulses_per_minute(), t->pulse(), _frame_rate));
+ t->set_frame (prev_t->frame_at_tempo (t->pulses_per_minute(), t->pulse(), _frame_rate));
}
}
- prev_ts = t;
+ prev_t = t;
}
}
+ prev_t->set_c_func (0.0);
}
/* tempos must be positioned correctly */
{
MeterSection* meter = 0;
MeterSection* prev_m = 0;
- double accumulated_beats = 0.0;
- uint32_t accumulated_bars = 0;
for (Metrics::const_iterator mi = metrics.begin(); mi != metrics.end(); ++mi) {
if ((meter = dynamic_cast<MeterSection*> (*mi)) != 0) {
- if (prev_m) {
- const double beats_in_m = (meter->pulse() - prev_m->pulse()) * prev_m->note_divisor();
- accumulated_beats += beats_in_m;
- accumulated_bars += (beats_in_m + 1) / prev_m->divisions_per_bar();
- }
if (meter->position_lock_style() == AudioTime) {
double pulse = 0.0;
- pair<double, BBT_Time> bt = make_pair (accumulated_beats, BBT_Time (accumulated_bars + 1, 1, 0));
- meter->set_beat (bt);
- if (prev_m) {
- pulse = prev_m->pulse() + (meter->beat() - prev_m->beat()) / prev_m->note_divisor();
- } else {
- if (meter->movable()) {
- pulse = pulse_at_frame_locked (metrics, meter->frame());
+ pair<double, BBT_Time> b_bbt;
+ if (meter->movable()) {
+ const double beats = ((pulse_at_frame_locked (metrics, meter->frame()) - prev_m->pulse()) * prev_m->note_divisor());
+ const double floor_beats = beats - fmod (beats, prev_m->divisions_per_bar());
+ if (floor_beats + prev_m->beat() < meter->beat()) {
+ /* tempo change caused a change in beat (bar). */
+ b_bbt = make_pair (floor_beats + prev_m->beat(), BBT_Time ((floor_beats / prev_m->divisions_per_bar()) + prev_m->bbt().bars, 1, 0));
+ const double true_pulse = prev_m->pulse() + (floor_beats / prev_m->note_divisor());
+ const double pulse_off = true_pulse - (beats / prev_m->note_divisor()) - prev_m->pulse();
+ pulse = true_pulse - pulse_off;
} else {
- pulse = 0.0;
+ b_bbt = make_pair (meter->beat(), meter->bbt());
+ pulse = pulse_at_frame_locked (metrics, meter->frame());
}
+ } else {
+ b_bbt = make_pair (0.0, BBT_Time (1, 1, 0));
}
+ meter->set_beat (b_bbt);
meter->set_pulse (pulse);
} else {
double pulse = 0.0;
+ pair<double, BBT_Time> new_beat;
if (prev_m) {
- pulse = prev_m->pulse() + (meter->beat() - prev_m->beat()) / prev_m->note_divisor();
+ pulse = prev_m->pulse() + ((meter->bbt().bars - prev_m->bbt().bars) * prev_m->divisions_per_bar() / prev_m->note_divisor());
+ new_beat = make_pair (((pulse - prev_m->pulse()) * prev_m->note_divisor()) + prev_m->beat(), meter->bbt());
} else {
+ /* shouldn't happen - the first is audio-locked */
pulse = pulse_at_beat_locked (metrics, meter->beat());
+ new_beat = make_pair (pulse, meter->bbt());
}
+
+ meter->set_beat (new_beat);
meter->set_frame (frame_at_pulse_locked (metrics, pulse));
meter->set_pulse (pulse);
}
prev_m = meter;
}
}
+ //dump (_metrics, std::cerr;
}
void
recompute_meters (metrics);
}
-double
-TempoMap::pulse_at_beat (const double& beat) const
-{
- Glib::Threads::RWLock::ReaderLock lm (lock);
- return pulse_at_beat_locked (_metrics, beat);
-}
-
-double
-TempoMap::pulse_at_beat_locked (const Metrics& metrics, const double& beat) const
-{
- MeterSection* prev_ms = 0;
- double accumulated_beats = 0.0;
-
- for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
- MeterSection* m;
- if ((m = dynamic_cast<MeterSection*> (*i)) != 0) {
- if (prev_ms && m->beat() > beat) {
- break;
- }
- accumulated_beats = m->beat();
- prev_ms = m;
- }
-
- }
- double const ret = prev_ms->pulse() + ((beat - accumulated_beats) / prev_ms->note_divisor());
- return ret;
-}
-
-double
-TempoMap::beat_at_pulse (const double& pulse) const
-{
- Glib::Threads::RWLock::ReaderLock lm (lock);
- return beat_at_pulse_locked (_metrics, pulse);
-}
-
-double
-TempoMap::beat_at_pulse_locked (const Metrics& metrics, const double& pulse) const
-{
- MeterSection* prev_ms = 0;
- double accumulated_beats = 0.0;
-
- for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
- MeterSection* m;
- if ((m = dynamic_cast<MeterSection*> (*i)) != 0) {
- if (prev_ms && m->pulse() > pulse) {
- break;
- }
- accumulated_beats = m->beat();
- prev_ms = m;
- }
- }
-
- double const beats_in_section = (pulse - prev_ms->pulse()) * prev_ms->note_divisor();
-
- return beats_in_section + accumulated_beats;
-}
-
TempoMetric
TempoMap::metric_at (framepos_t frame, Metrics::const_iterator* last) const
{
return m;
}
-void
-TempoMap::bbt_time (framepos_t frame, BBT_Time& bbt)
+double
+TempoMap::pulse_at_beat_locked (const Metrics& metrics, const double& beat) const
{
+ MeterSection* prev_m = 0;
- if (frame < 0) {
- bbt.bars = 1;
- bbt.beats = 1;
- bbt.ticks = 0;
- warning << string_compose (_("tempo map asked for BBT time at frame %1\n"), frame) << endmsg;
- return;
- }
- Glib::Threads::RWLock::ReaderLock lm (lock);
- double const beat = beat_at_frame_locked (_metrics, frame);
+ for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
+ MeterSection* m;
+ if ((m = dynamic_cast<MeterSection*> (*i)) != 0) {
+ if (prev_m && m->beat() > beat) {
+ break;
+ }
+ prev_m = m;
+ }
- bbt = beats_to_bbt_locked (_metrics, beat);
+ }
+ double const ret = prev_m->pulse() + ((beat - prev_m->beat()) / prev_m->note_divisor());
+ return ret;
}
double
-TempoMap::bbt_to_beats (const Timecode::BBT_Time& bbt)
+TempoMap::pulse_at_beat (const double& beat) const
{
Glib::Threads::RWLock::ReaderLock lm (lock);
-
- return bbt_to_beats_locked (_metrics, bbt);
+ return pulse_at_beat_locked (_metrics, beat);
}
double
-TempoMap::bbt_to_beats_locked (const Metrics& metrics, const Timecode::BBT_Time& bbt) const
+TempoMap::beat_at_pulse_locked (const Metrics& metrics, const double& pulse) const
{
- /* CALLER HOLDS READ LOCK */
+ MeterSection* prev_m = 0;
- double accumulated_beats = 0.0;
- double accumulated_bars = 0.0;
- MeterSection* prev_ms = 0;
- /* because audio-locked meters have 'fake' integral beats,
- there is no pulse offset here.
- */
for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
MeterSection* m;
if ((m = dynamic_cast<MeterSection*> (*i)) != 0) {
- double bars_to_m = 0.0;
- if (prev_ms) {
- bars_to_m = (m->beat() - prev_ms->beat()) / prev_ms->divisions_per_bar();
- if ((bars_to_m + accumulated_bars) > (bbt.bars - 1)) {
+ if (prev_m && m->pulse() > pulse) {
+ if ((pulse - prev_m->pulse()) * prev_m->note_divisor() < m->beat()) {
break;
}
- accumulated_beats = m->beat();
- accumulated_bars += bars_to_m;
}
- prev_ms = m;
+ prev_m = m;
}
}
- double const remaining_bars = (bbt.bars - 1) - accumulated_bars;
- double const remaining_bars_in_beats = remaining_bars * prev_ms->divisions_per_bar();
- double const ret = remaining_bars_in_beats + accumulated_beats + (bbt.beats - 1) + (bbt.ticks / BBT_Time::ticks_per_beat);
+ double const beats_in_section = (pulse - prev_m->pulse()) * prev_m->note_divisor();
- return ret;
+ return beats_in_section + prev_m->beat();
}
-Timecode::BBT_Time
-TempoMap::beats_to_bbt (const double& beats)
+double
+TempoMap::beat_at_pulse (const double& pulse) const
{
Glib::Threads::RWLock::ReaderLock lm (lock);
-
- return beats_to_bbt_locked (_metrics, beats);
+ return beat_at_pulse_locked (_metrics, pulse);
}
-Timecode::BBT_Time
-TempoMap::beats_to_bbt_locked (const Metrics& metrics, const double& b) const
+double
+TempoMap::pulse_at_frame_locked (const Metrics& metrics, const framecnt_t& frame) const
{
- /* CALLER HOLDS READ LOCK */
- MeterSection* prev_ms = 0;
- const double beats = (b < 0.0) ? 0.0 : b;
- uint32_t accumulated_bars = 0;
- double accumulated_beats = 0.0;
+ /* HOLD (at least) THE READER LOCK */
+ TempoSection* prev_t = 0;
for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
- MeterSection* m = 0;
-
- if ((m = dynamic_cast<MeterSection*> (*i)) != 0) {
-
- if (prev_ms) {
- double const beats_to_m = m->beat() - prev_ms->beat();
- if (accumulated_beats + beats_to_m > beats) {
- /* this is the meter after the one our beat is on*/
- break;
- }
-
- /* we need a whole number of bars. */
- accumulated_bars += (beats_to_m + 1) / prev_ms->divisions_per_bar();
- accumulated_beats += beats_to_m;
+ TempoSection* t;
+ if ((t = dynamic_cast<TempoSection*> (*i)) != 0) {
+ if (!t->active()) {
+ continue;
}
-
- prev_ms = m;
+ if (prev_t && t->frame() > frame) {
+ /*the previous ts is the one containing the frame */
+ const double ret = prev_t->pulse_at_frame (frame, _frame_rate);
+ return ret;
+ }
+ prev_t = t;
}
}
- double const beats_in_ms = beats - accumulated_beats;
- uint32_t const bars_in_ms = (uint32_t) floor (beats_in_ms / prev_ms->divisions_per_bar());
- uint32_t const total_bars = bars_in_ms + accumulated_bars;
- double const remaining_beats = beats_in_ms - (bars_in_ms * prev_ms->divisions_per_bar());
- double const remaining_ticks = (remaining_beats - floor (remaining_beats)) * BBT_Time::ticks_per_beat;
+ /* treated as constant for this ts */
+ const double pulses_in_section = (frame - prev_t->frame()) / prev_t->frames_per_pulse (_frame_rate);
- BBT_Time ret;
+ return pulses_in_section + prev_t->pulse();
+}
- ret.ticks = (uint32_t) floor (remaining_ticks + 0.5);
- ret.beats = (uint32_t) floor (remaining_beats);
- ret.bars = total_bars;
+double
+TempoMap::pulse_at_frame (const framecnt_t& frame) const
+{
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+ return pulse_at_frame_locked (_metrics, frame);
+}
- /* 0 0 0 to 1 1 0 - based mapping*/
- ++ret.bars;
- ++ret.beats;
+framecnt_t
+TempoMap::frame_at_pulse_locked (const Metrics& metrics, const double& pulse) const
+{
+ /* HOLD THE READER LOCK */
- if (ret.ticks >= BBT_Time::ticks_per_beat) {
- ++ret.beats;
- ret.ticks -= BBT_Time::ticks_per_beat;
- }
+ const TempoSection* prev_t = 0;
- if (ret.beats >= prev_ms->divisions_per_bar() + 1) {
- ++ret.bars;
- ret.beats = 1;
+ for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
+ TempoSection* t;
+
+ if ((t = dynamic_cast<TempoSection*> (*i)) != 0) {
+ if (!t->active()) {
+ continue;
+ }
+ if (prev_t && t->pulse() > pulse) {
+ return prev_t->frame_at_pulse (pulse, _frame_rate);
+ }
+
+ prev_t = t;
+ }
}
+ /* must be treated as constant, irrespective of _type */
+ double const pulses_in_section = pulse - prev_t->pulse();
+ double const dtime = pulses_in_section * prev_t->frames_per_pulse (_frame_rate);
+
+ framecnt_t const ret = (framecnt_t) floor (dtime) + prev_t->frame();
return ret;
}
-Timecode::BBT_Time
-TempoMap::pulse_to_bbt (const double& pulse)
+framecnt_t
+TempoMap::frame_at_pulse (const double& pulse) const
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- MeterSection* prev_ms = 0;
- uint32_t accumulated_bars = 0;
- double accumulated_pulses = 0.0;
+ return frame_at_pulse_locked (_metrics, pulse);
+}
- for (Metrics::const_iterator i = _metrics.begin(); i != _metrics.end(); ++i) {
- MeterSection* m = 0;
+double
+TempoMap::beat_at_frame_locked (const Metrics& metrics, const framecnt_t& frame) const
+{
+ const TempoSection& ts = tempo_section_at_locked (metrics, frame);
+ MeterSection* prev_m = 0;
+ MeterSection* next_m = 0;
+ for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
+ MeterSection* m;
if ((m = dynamic_cast<MeterSection*> (*i)) != 0) {
-
- if (prev_ms) {
- double const pulses_to_m = m->pulse() - prev_ms->pulse();
- if (accumulated_pulses + pulses_to_m > pulse) {
- /* this is the meter after the one our beat is on*/
- break;
- }
-
- /* we need a whole number of bars. */
- accumulated_pulses += pulses_to_m;
- accumulated_bars += ((pulses_to_m * prev_ms->note_divisor()) + 1) / prev_ms->divisions_per_bar();
+ if (prev_m && m->frame() > frame) {
+ next_m = m;
+ break;
}
-
- prev_ms = m;
+ prev_m = m;
}
}
- double const beats_in_ms = (pulse - prev_ms->pulse()) * prev_ms->note_divisor();
- uint32_t const bars_in_ms = (uint32_t) floor (beats_in_ms / prev_ms->divisions_per_bar());
- uint32_t const total_bars = bars_in_ms + accumulated_bars;
- double const remaining_beats = beats_in_ms - (bars_in_ms * prev_ms->divisions_per_bar());
- double const remaining_ticks = (remaining_beats - floor (remaining_beats)) * BBT_Time::ticks_per_beat;
-
- BBT_Time ret;
-
- ret.ticks = (uint32_t) floor (remaining_ticks + 0.5);
- ret.beats = (uint32_t) floor (remaining_beats);
- ret.bars = total_bars;
-
- /* 0 0 0 to 1 1 0 mapping*/
- ++ret.bars;
- ++ret.beats;
-
- if (ret.ticks >= BBT_Time::ticks_per_beat) {
- ++ret.beats;
- ret.ticks -= BBT_Time::ticks_per_beat;
+ if (frame < prev_m->frame()) {
+ return 0.0;
}
+ const double beat = prev_m->beat() + (ts.pulse_at_frame (frame, _frame_rate) - prev_m->pulse()) * prev_m->note_divisor();
- if (ret.beats >= prev_ms->divisions_per_bar() + 1) {
- ++ret.bars;
- ret.beats = 1;
+ if (next_m && next_m->beat() < beat) {
+ return next_m->beat();
}
- return ret;
+ return beat;
}
double
return beat_at_frame_locked (_metrics, frame);
}
-double
-TempoMap::beat_at_frame_locked (const Metrics& metrics, const framecnt_t& frame) const
-{
- framecnt_t const offset_frame = frame + frame_offset_at (metrics, frame);
- double const pulse = pulse_at_frame_locked (metrics, offset_frame);
-
- return beat_at_pulse_locked (metrics, pulse);
-}
-
-double
-TempoMap::pulse_at_frame_locked (const Metrics& metrics, const framecnt_t& frame) const
+framecnt_t
+TempoMap::frame_at_beat_locked (const Metrics& metrics, const double& beat) const
{
- /* HOLD (at least) THE READER LOCK */
- TempoSection* prev_ts = 0;
- double accumulated_pulses = 0.0;
+ const TempoSection& prev_t = tempo_section_at_beat_locked (metrics, beat);
+ MeterSection* prev_m = 0;
for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
- TempoSection* t;
- if ((t = dynamic_cast<TempoSection*> (*i)) != 0) {
- if (!t->active()) {
- continue;
- }
- if (prev_ts && t->frame() > frame) {
- /*the previous ts is the one containing the frame */
- double const ret = prev_ts->pulse_at_frame (frame, _frame_rate);
- return ret;
+ MeterSection* m;
+ if ((m = dynamic_cast<MeterSection*> (*i)) != 0) {
+ if (prev_m && m->beat() > beat) {
+ break;
}
- accumulated_pulses = t->pulse();
- prev_ts = t;
+ prev_m = m;
}
}
- /* treated as constant for this ts */
- double const pulses_in_section = (frame - prev_ts->frame()) / prev_ts->frames_per_pulse (_frame_rate);
-
- return pulses_in_section + accumulated_pulses;
+ return prev_t.frame_at_pulse (((beat - prev_m->beat()) / prev_m->note_divisor()) + prev_m->pulse(), _frame_rate);
}
framecnt_t
return frame_at_beat_locked (_metrics, beat);
}
-framecnt_t
-TempoMap::frame_at_beat_locked (const Metrics& metrics, const double& beat) const
-{
- framecnt_t const frame = frame_at_pulse_locked (metrics, pulse_at_beat_locked (metrics, beat));
- frameoffset_t const frame_off = frame_offset_at (metrics, frame);
- return frame - frame_off;
-}
-
-framecnt_t
-TempoMap::frame_at_pulse_locked (const Metrics& metrics, const double& pulse) const
+double
+TempoMap::bbt_to_beats_locked (const Metrics& metrics, const Timecode::BBT_Time& bbt) const
{
- /* HOLD THE READER LOCK */
+ /* CALLER HOLDS READ LOCK */
- const TempoSection* prev_ts = 0;
- double accumulated_pulses = 0.0;
+ MeterSection* prev_m = 0;
+ /* because audio-locked meters have 'fake' integral beats,
+ there is no pulse offset here.
+ */
for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
- TempoSection* t;
-
- if ((t = dynamic_cast<TempoSection*> (*i)) != 0) {
- if (!t->active()) {
- continue;
- }
- if (prev_ts && t->pulse() > pulse) {
- return prev_ts->frame_at_pulse (pulse, _frame_rate);
+ MeterSection* m;
+ if ((m = dynamic_cast<MeterSection*> (*i)) != 0) {
+ if (prev_m) {
+ const double bars_to_m = (m->beat() - prev_m->beat()) / prev_m->divisions_per_bar();
+ if ((bars_to_m + (prev_m->bbt().bars - 1)) > (bbt.bars - 1)) {
+ break;
+ }
}
-
- accumulated_pulses = t->pulse();
- prev_ts = t;
+ prev_m = m;
}
}
- /* must be treated as constant, irrespective of _type */
- double const pulses_in_section = pulse - accumulated_pulses;
- double const dtime = pulses_in_section * prev_ts->frames_per_pulse (_frame_rate);
- framecnt_t const ret = (framecnt_t) floor (dtime) + prev_ts->frame();
+ const double remaining_bars = bbt.bars - prev_m->bbt().bars;
+ const double remaining_bars_in_beats = remaining_bars * prev_m->divisions_per_bar();
+ const double ret = remaining_bars_in_beats + prev_m->beat() + (bbt.beats - 1) + (bbt.ticks / BBT_Time::ticks_per_beat);
return ret;
}
double
-TempoMap::beat_offset_at (const Metrics& metrics, const double& beat) const
+TempoMap::bbt_to_beats (const Timecode::BBT_Time& bbt)
+{
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+ return bbt_to_beats_locked (_metrics, bbt);
+}
+
+Timecode::BBT_Time
+TempoMap::beats_to_bbt_locked (const Metrics& metrics, const double& b) const
{
+ /* CALLER HOLDS READ LOCK */
MeterSection* prev_m = 0;
- double beat_off = first_meter().pulse();
+ const double beats = (b < 0.0) ? 0.0 : b;
for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
MeterSection* m = 0;
+
if ((m = dynamic_cast<MeterSection*> (*i)) != 0) {
if (prev_m) {
- if (m->beat() > beat) {
+ if (m->beat() > beats) {
+ /* this is the meter after the one our beat is on*/
break;
}
-
- if (m->position_lock_style() == AudioTime) {
- beat_off += ((m->beat() - prev_m->beat()) / prev_m->note_divisor()) - floor (m->pulse() - prev_m->pulse());
- }
}
+
prev_m = m;
}
}
- return beat_off;
+ const double beats_in_ms = beats - prev_m->beat();
+ const uint32_t bars_in_ms = (uint32_t) floor (beats_in_ms / prev_m->divisions_per_bar());
+ const uint32_t total_bars = bars_in_ms + (prev_m->bbt().bars - 1);
+ const double remaining_beats = beats_in_ms - (bars_in_ms * prev_m->divisions_per_bar());
+ const double remaining_ticks = (remaining_beats - floor (remaining_beats)) * BBT_Time::ticks_per_beat;
+
+ BBT_Time ret;
+
+ ret.ticks = (uint32_t) floor (remaining_ticks + 0.5);
+ ret.beats = (uint32_t) floor (remaining_beats);
+ ret.bars = total_bars;
+
+ /* 0 0 0 to 1 1 0 - based mapping*/
+ ++ret.bars;
+ ++ret.beats;
+
+ if (ret.ticks >= BBT_Time::ticks_per_beat) {
+ ++ret.beats;
+ ret.ticks -= BBT_Time::ticks_per_beat;
+ }
+
+ if (ret.beats >= prev_m->divisions_per_bar() + 1) {
+ ++ret.bars;
+ ret.beats = 1;
+ }
+
+ return ret;
+}
+
+Timecode::BBT_Time
+TempoMap::beats_to_bbt (const double& beats)
+{
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+ return beats_to_bbt_locked (_metrics, beats);
}
-frameoffset_t
-TempoMap::frame_offset_at (const Metrics& metrics, const framepos_t& frame) const
+Timecode::BBT_Time
+TempoMap::pulse_to_bbt (const double& pulse)
{
- frameoffset_t frame_off = 0;
+ Glib::Threads::RWLock::ReaderLock lm (lock);
MeterSection* prev_m = 0;
- for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
+ for (Metrics::const_iterator i = _metrics.begin(); i != _metrics.end(); ++i) {
MeterSection* m = 0;
+
if ((m = dynamic_cast<MeterSection*> (*i)) != 0) {
- if (m->frame() > frame) {
- break;
- }
- if (prev_m && m->position_lock_style() == AudioTime) {
- const double pulse = prev_m->pulse() + ((m->beat() - prev_m->beat()) / prev_m->note_divisor());
- frame_off += frame_at_pulse_locked (metrics, pulse) - m->frame();
+
+ if (prev_m) {
+ double const pulses_to_m = m->pulse() - prev_m->pulse();
+ if (prev_m->pulse() + pulses_to_m > pulse) {
+ /* this is the meter after the one our beat is on*/
+ break;
+ }
}
+
prev_m = m;
}
}
- return frame_off;
+ const double beats_in_ms = (pulse - prev_m->pulse()) * prev_m->note_divisor();
+ const uint32_t bars_in_ms = (uint32_t) floor (beats_in_ms / prev_m->divisions_per_bar());
+ const uint32_t total_bars = bars_in_ms + (prev_m->bbt().bars - 1);
+ const double remaining_beats = beats_in_ms - (bars_in_ms * prev_m->divisions_per_bar());
+ const double remaining_ticks = (remaining_beats - floor (remaining_beats)) * BBT_Time::ticks_per_beat;
+
+ BBT_Time ret;
+
+ ret.ticks = (uint32_t) floor (remaining_ticks + 0.5);
+ ret.beats = (uint32_t) floor (remaining_beats);
+ ret.bars = total_bars;
+
+ /* 0 0 0 to 1 1 0 mapping*/
+ ++ret.bars;
+ ++ret.beats;
+
+ if (ret.ticks >= BBT_Time::ticks_per_beat) {
+ ++ret.beats;
+ ret.ticks -= BBT_Time::ticks_per_beat;
+ }
+
+ if (ret.beats >= prev_m->divisions_per_bar() + 1) {
+ ++ret.bars;
+ ret.beats = 1;
+ }
+
+ return ret;
+}
+
+void
+TempoMap::bbt_time (framepos_t frame, BBT_Time& bbt)
+{
+
+ if (frame < 0) {
+ bbt.bars = 1;
+ bbt.beats = 1;
+ bbt.ticks = 0;
+ warning << string_compose (_("tempo map asked for BBT time at frame %1\n"), frame) << endmsg;
+ return;
+ }
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+ const double beat = beat_at_frame_locked (_metrics, frame);
+
+ bbt = beats_to_bbt_locked (_metrics, beat);
+}
+
+framepos_t
+TempoMap::frame_time_locked (const Metrics& metrics, const BBT_Time& bbt) const
+{
+ /* HOLD THE READER LOCK */
+
+ const framepos_t ret = frame_at_beat_locked (metrics, bbt_to_beats_locked (metrics, bbt));
+ return ret;
}
framepos_t
throw std::logic_error ("beats are counted from one");
}
Glib::Threads::RWLock::ReaderLock lm (lock);
- double const beat = bbt_to_beats_locked (_metrics, bbt);
- framecnt_t const frame = frame_at_beat_locked (_metrics, beat);
- return frame;
-}
-
-framepos_t
-TempoMap::frame_time_locked (const Metrics& metrics, const BBT_Time& bbt) const
-{
- /* HOLD THE READER LOCK */
- framepos_t const ret = frame_at_pulse_locked (metrics, pulse_at_beat_locked (metrics, bbt_to_beats_locked (metrics, bbt)));
-
- return ret;
+ return frame_time_locked (_metrics, bbt);
}
bool
-TempoMap::check_solved (Metrics& metrics, bool by_frame)
+TempoMap::check_solved (const Metrics& metrics, bool by_frame) const
{
- TempoSection* prev_ts = 0;
+ TempoSection* prev_t = 0;
for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
TempoSection* t;
if (!t->active()) {
continue;
}
- if (prev_ts) {
- if ((by_frame && t->frame() < prev_ts->frame()) || (!by_frame && t->pulse() < prev_ts->pulse())) {
+ if (prev_t) {
+ if ((by_frame && t->frame() < prev_t->frame()) || (!by_frame && t->pulse() < prev_t->pulse())) {
return false;
}
- if (by_frame && t->frame() != prev_ts->frame_at_pulse (t->pulse(), _frame_rate)) {
+
+ if (t->frame() == prev_t->frame()) {
return false;
}
- /*
- if (!by_frame && fabs (t->pulse() - prev_ts->pulse_at_tempo (t->pulses_per_minute(), t->frame(), _frame_rate)) > 0.00001) {
- std::cerr << "beat precision too low for bpm: " << t->beats_per_minute() << std::endl <<
- " |error :" << t->pulse() - prev_ts->pulse_at_tempo (t->pulses_per_minute(), t->frame(), _frame_rate) << std::endl <<
- "|frame at beat :" << prev_ts->frame_at_pulse (t->pulse(), _frame_rate) << std::endl <<
- " |frame at tempo : " << prev_ts->frame_at_tempo (t->pulses_per_minute(), t->pulse(), _frame_rate) << std::endl;
+
+ /* precision check ensures pulses and frames align.*/
+ if (t->frame() != prev_t->frame_at_pulse (t->pulse(), _frame_rate)) {
return false;
}
- */
}
- prev_ts = t;
+ prev_t = t;
}
}
}
bool
-TempoMap::solve_map (Metrics& imaginary, TempoSection* section, const Tempo& bpm, const framepos_t& frame)
+TempoMap::set_active_tempos (const Metrics& metrics, const framepos_t& frame)
{
+ for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
+ TempoSection* t;
+ if ((t = dynamic_cast<TempoSection*> (*i)) != 0) {
+ if (!t->movable()) {
+ t->set_active (true);
+ continue;
+ }
+ if (t->movable() && t->active () && t->position_lock_style() == AudioTime && t->frame() < frame) {
+ t->set_active (false);
+ t->set_pulse (0.0);
+ } else if (t->movable() && t->position_lock_style() == AudioTime && t->frame() > frame) {
+ t->set_active (true);
+ } else if (t->movable() && t->position_lock_style() == AudioTime && t->frame() == frame) {
+ return false;
+ }
+ }
+ }
+ return true;
+}
- TempoSection* prev_ts = 0;
+bool
+TempoMap::solve_map (Metrics& imaginary, TempoSection* section, const framepos_t& frame)
+{
+ TempoSection* prev_t = 0;
TempoSection* section_prev = 0;
- MetricSectionFrameSorter fcmp;
- MetricSectionSorter cmp;
framepos_t first_m_frame = 0;
+
for (Metrics::iterator i = imaginary.begin(); i != imaginary.end(); ++i) {
MeterSection* m;
if ((m = dynamic_cast<MeterSection*> (*i)) != 0) {
if (!m->movable()) {
first_m_frame = m->frame();
+ break;
}
}
}
- if (section->movable() && frame < first_m_frame) {
+ if (section->movable() && frame <= first_m_frame) {
return false;
- } else {
- section->set_active (true);
}
+
+ section->set_active (true);
section->set_frame (frame);
for (Metrics::iterator i = imaginary.begin(); i != imaginary.end(); ++i) {
if (!t->active()) {
continue;
}
- if (prev_ts) {
+ if (prev_t) {
if (t == section) {
- section_prev = prev_ts;
+ section_prev = prev_t;
continue;
}
if (t->position_lock_style() == MusicTime) {
- prev_ts->set_c_func (prev_ts->compute_c_func_pulse (t->pulses_per_minute(), t->pulse(), _frame_rate));
- t->set_frame (prev_ts->frame_at_pulse (t->pulse(), _frame_rate));
+ prev_t->set_c_func (prev_t->compute_c_func_pulse (t->pulses_per_minute(), t->pulse(), _frame_rate));
+ t->set_frame (prev_t->frame_at_pulse (t->pulse(), _frame_rate));
} else {
- prev_ts->set_c_func (prev_ts->compute_c_func_frame (t->pulses_per_minute(), t->frame(), _frame_rate));
- t->set_pulse (prev_ts->pulse_at_frame (t->frame(), _frame_rate));
+ prev_t->set_c_func (prev_t->compute_c_func_frame (t->pulses_per_minute(), t->frame(), _frame_rate));
+ t->set_pulse (prev_t->pulse_at_frame (t->frame(), _frame_rate));
}
}
- prev_ts = t;
+ prev_t = t;
}
}
return true;
}
+ MetricSectionFrameSorter fcmp;
imaginary.sort (fcmp);
if (section->position_lock_style() == MusicTime) {
/* we're setting the frame */
} else {
recompute_tempos (imaginary);
}
+
if (check_solved (imaginary, true)) {
recompute_meters (imaginary);
return true;
}
-
+#if (0)
+ MetricSectionSorter cmp;
imaginary.sort (cmp);
if (section->position_lock_style() == MusicTime) {
/* we're setting the frame */
} else {
recompute_tempos (imaginary);
}
+
if (check_solved (imaginary, true)) {
recompute_meters (imaginary);
return true;
}
+#endif
//dump (imaginary, std::cerr);
return false;
}
bool
-TempoMap::solve_map (Metrics& imaginary, TempoSection* section, const Tempo& bpm, const double& pulse)
+TempoMap::solve_map (Metrics& imaginary, TempoSection* section, const double& pulse)
{
- MetricSectionSorter cmp;
- MetricSectionFrameSorter fcmp;
- TempoSection* prev_ts = 0;
+ TempoSection* prev_t = 0;
TempoSection* section_prev = 0;
section->set_pulse (pulse);
if (!t->active()) {
continue;
}
- if (prev_ts) {
+ if (!t->movable()) {
+ t->set_pulse (0.0);
+ prev_t = t;
+ continue;
+ }
+ if (prev_t) {
if (t == section) {
- section_prev = prev_ts;
+ section_prev = prev_t;
continue;
}
if (t->position_lock_style() == MusicTime) {
- prev_ts->set_c_func (prev_ts->compute_c_func_pulse (t->pulses_per_minute(), t->pulse(), _frame_rate));
- t->set_frame (prev_ts->frame_at_pulse (t->pulse(), _frame_rate));
+ prev_t->set_c_func (prev_t->compute_c_func_pulse (t->pulses_per_minute(), t->pulse(), _frame_rate));
+ t->set_frame (prev_t->frame_at_pulse (t->pulse(), _frame_rate));
} else {
- prev_ts->set_c_func (prev_ts->compute_c_func_frame (t->pulses_per_minute(), t->frame(), _frame_rate));
- t->set_pulse (prev_ts->pulse_at_frame (t->frame(), _frame_rate));
+ prev_t->set_c_func (prev_t->compute_c_func_frame (t->pulses_per_minute(), t->frame(), _frame_rate));
+ t->set_pulse (prev_t->pulse_at_frame (t->frame(), _frame_rate));
}
}
- prev_ts = t;
+ prev_t = t;
}
}
if (section_prev) {
} else {
recompute_tempos (imaginary);
}
+
if (check_solved (imaginary, false)) {
recompute_meters (imaginary);
return true;
}
+ MetricSectionSorter cmp;
imaginary.sort (cmp);
if (section->position_lock_style() == AudioTime) {
/* we're setting the pulse */
recompute_meters (imaginary);
return true;
}
+#if (0)
+ MetricSectionFrameSorter fcmp;
+ imaginary.sort (fcmp);
+ if (section->position_lock_style() == AudioTime) {
+ /* we're setting the pulse */
+ section->set_position_lock_style (MusicTime);
+ recompute_tempos (imaginary);
+ section->set_position_lock_style (AudioTime);
+ } else {
+ recompute_tempos (imaginary);
+ }
+
+ if (check_solved (imaginary, false)) {
+ recompute_meters (imaginary);
+ return true;
+ }
+#endif
+ //dump (imaginary, std::cerr);
+
+ return false;
+}
+
+void
+TempoMap::solve_map (Metrics& imaginary, MeterSection* section, const framepos_t& frame)
+{
+ /* disallow moving first meter past any subsequent one, and any movable meter before the first one */
+ const MeterSection* other = &meter_section_at_locked (imaginary, frame);
+ if ((!section->movable() && other->movable()) || (!other->movable() && section->movable() && other->frame() >= frame)) {
+ return;
+ }
+ MeterSection* prev_m = 0;
+
+ if (!section->movable()) {
+ /* lock the first tempo to our first meter */
+ if (!set_active_tempos (imaginary, frame)) {
+ return;
+ }
+ TempoSection* first_t = &first_tempo();
+ Metrics future_map;
+ TempoSection* new_section = copy_metrics_and_point (future_map, first_t);
+
+ new_section->set_frame (frame);
+ new_section->set_pulse (0.0);
+ new_section->set_active (true);
+
+ if (solve_map (future_map, new_section, frame)) {
+ first_t->set_frame (frame);
+ first_t->set_pulse (0.0);
+ first_t->set_active (true);
+ solve_map (imaginary, first_t, frame);
+ } else {
+ return;
+ }
+ }
+
+ for (Metrics::iterator i = imaginary.begin(); i != imaginary.end(); ++i) {
+ MeterSection* m;
+ if ((m = dynamic_cast<MeterSection*> (*i)) != 0) {
+ if (m == section){
+ /*
+ here we set the beat for this frame.
+ we set it 'incorrectly' to the next bar's first beat
+ and use the delta to find the meter's pulse.
+ */
+ double new_pulse = 0.0;
+ pair<double, BBT_Time> b_bbt;
+
+ if (section->movable()) {
+ const double beats = ((pulse_at_frame_locked (imaginary, frame) - prev_m->pulse()) * prev_m->note_divisor());
+ const double floor_beats = beats - fmod (beats, prev_m->divisions_per_bar());
+ if (floor_beats + prev_m->beat() < section->beat()) {
+ /* disallow position change if it will alter out beat
+ we allow tempo changes to do this in recompute_meters().
+ blocking this is an option, but i'm not convinced that
+ this is what the user would actually want.
+ */
+ return;
+ }
+ b_bbt = make_pair (section->beat(), section->bbt());
+ new_pulse = pulse_at_frame_locked (imaginary, frame);
+ } else {
+ b_bbt = make_pair (0.0, BBT_Time (1, 1, 0));
+ }
+ section->set_frame (frame);
+ section->set_beat (b_bbt);
+ section->set_pulse (new_pulse);
+ prev_m = m;
+
+ continue;
+ }
+ if (prev_m) {
+ double new_pulse = 0.0;
+ if (m->position_lock_style() == MusicTime) {
+ new_pulse = prev_m->pulse() + ((m->bbt().bars - prev_m->bbt().bars) * prev_m->divisions_per_bar() / prev_m->note_divisor());
+ m->set_frame (frame_at_pulse_locked (imaginary, new_pulse));
+ if (m->frame() > section->frame()) {
+ /* moving 'section' will affect later meters' beat (but not bbt).*/
+ pair<double, BBT_Time> new_beat (((new_pulse - prev_m->pulse()) * prev_m->note_divisor()) + prev_m->beat(), m->bbt());
+ m->set_beat (new_beat);
+ }
+ } else {
+ pair<double, BBT_Time> b_bbt;
+ if (m->movable()) {
+ const double beats = ((pulse_at_frame_locked (imaginary, m->frame()) - prev_m->pulse()) * prev_m->note_divisor());
+ const double floor_beats = beats - fmod (beats , prev_m->divisions_per_bar());
+ b_bbt = make_pair (floor_beats + prev_m->beat()
+ , BBT_Time ((floor_beats / prev_m->divisions_per_bar()) + prev_m->bbt().bars, 1, 0));
+ const double true_pulse = prev_m->pulse() + (floor_beats / prev_m->note_divisor());
+ const double pulse_off = true_pulse - (beats / prev_m->note_divisor()) - prev_m->pulse();
+ new_pulse = true_pulse - pulse_off;
+ } else {
+ b_bbt = make_pair (0.0, BBT_Time (1, 1, 0));
+ new_pulse = 0.0;
+ }
+ m->set_beat (b_bbt);
+ }
+ m->set_pulse (new_pulse);
+ }
+ prev_m = m;
+ }
+ }
+
+ MetricSectionFrameSorter fcmp;
+ imaginary.sort (fcmp);
+ if (section->position_lock_style() == MusicTime) {
+ /* we're setting the frame */
+ section->set_position_lock_style (AudioTime);
+ recompute_meters (imaginary);
+ section->set_position_lock_style (MusicTime);
+ } else {
+ recompute_meters (imaginary);
+ }
+ //dump (imaginary, std::cerr);
+}
+
+void
+TempoMap::solve_map (Metrics& imaginary, MeterSection* section, const double& pulse)
+{
+ MeterSection* prev_m = 0;
+ MeterSection* section_prev = 0;
+
+ section->set_pulse (pulse);
+
+ for (Metrics::iterator i = imaginary.begin(); i != imaginary.end(); ++i) {
+ MeterSection* m;
+ if ((m = dynamic_cast<MeterSection*> (*i)) != 0) {
+ if (m == section){
+ section_prev = prev_m;
+ continue;
+ }
+ if (prev_m) {
+ double new_pulse = 0.0;
+ if (m->position_lock_style() == MusicTime) {
+ new_pulse = prev_m->pulse() + ((m->bbt().bars - prev_m->bbt().bars) * prev_m->divisions_per_bar() / prev_m->note_divisor());
+ m->set_frame (frame_at_pulse_locked (imaginary, new_pulse));
+
+ if (new_pulse > section->pulse()) {
+ /* moving 'section' will affect later meters' beat (but not bbt).*/
+ pair<double, BBT_Time> new_beat (((new_pulse - prev_m->pulse()) * prev_m->note_divisor()) + prev_m->beat(), m->bbt());
+ m->set_beat (new_beat);
+ }
+ } else {
+ pair<double, BBT_Time> b_bbt;
+ if (m->movable()) {
+ const double beats = ((pulse_at_frame_locked (imaginary, m->frame()) - prev_m->pulse()) * prev_m->note_divisor());
+ const double floor_beats = beats - fmod (beats, prev_m->divisions_per_bar());
+ b_bbt = make_pair (floor_beats + prev_m->beat()
+ , BBT_Time ((floor_beats / prev_m->divisions_per_bar()) + prev_m->bbt().bars, 1, 0));
+ const double true_pulse = prev_m->pulse() + (floor_beats / prev_m->note_divisor());
+ const double pulse_off = true_pulse - (beats / prev_m->note_divisor()) - prev_m->pulse();
+ new_pulse = true_pulse - pulse_off;
+ } else {
+ b_bbt = make_pair (0.0, BBT_Time (1, 1, 0));
+ }
+ m->set_beat (b_bbt);
+ }
+ m->set_pulse (new_pulse);
+ }
+ prev_m = m;
+ }
+ }
+
+ if (section_prev) {
+ const double beats = ((pulse - section_prev->pulse()) * section_prev->note_divisor());
+ const int32_t bars = (beats + 1) / section_prev->divisions_per_bar();
+ pair<double, BBT_Time> b_bbt = make_pair (beats + section_prev->beat(), BBT_Time (bars + section_prev->bbt().bars, 1, 0));
+ section->set_beat (b_bbt);
+ section->set_frame (frame_at_pulse_locked (imaginary, pulse));
+ }
+
+ MetricSectionSorter cmp;
+ imaginary.sort (cmp);
+ if (section->position_lock_style() == AudioTime) {
+ /* we're setting the pulse */
+ section->set_position_lock_style (MusicTime);
+ recompute_meters (imaginary);
+ section->set_position_lock_style (AudioTime);
+ } else {
+ recompute_meters (imaginary);
+ }
+}
+
+/** places a copy of _metrics into copy and returns a pointer
+ * to section's equivalent in copy.
+ */
+TempoSection*
+TempoMap::copy_metrics_and_point (Metrics& copy, TempoSection* section)
+{
+ TempoSection* t;
+ MeterSection* m;
+ TempoSection* ret = 0;
+
+ for (Metrics::iterator i = _metrics.begin(); i != _metrics.end(); ++i) {
+ if ((t = dynamic_cast<TempoSection*> (*i)) != 0) {
+ if (t == section) {
+ if (t->position_lock_style() == MusicTime) {
+ ret = new TempoSection (t->pulse(), t->beats_per_minute(), t->note_type(), t->type());
+ ret->set_frame (t->frame());
+ } else {
+ ret = new TempoSection (t->frame(), t->beats_per_minute(), t->note_type(), t->type());
+ ret->set_pulse (t->pulse());
+ }
+ ret->set_active (t->active());
+ ret->set_movable (t->movable());
+ copy.push_back (ret);
+ continue;
+ }
+ TempoSection* cp = 0;
+ if (t->position_lock_style() == MusicTime) {
+ cp = new TempoSection (t->pulse(), t->beats_per_minute(), t->note_type(), t->type());
+ cp->set_frame (t->frame());
+ } else {
+ cp = new TempoSection (t->frame(), t->beats_per_minute(), t->note_type(), t->type());
+ cp->set_pulse (t->pulse());
+ }
+ cp->set_active (t->active());
+ cp->set_movable (t->movable());
+ copy.push_back (cp);
+ }
+ if ((m = dynamic_cast<MeterSection *> (*i)) != 0) {
+ MeterSection* cp = 0;
+ if (m->position_lock_style() == MusicTime) {
+ cp = new MeterSection (m->pulse(), m->beat(), m->bbt(), m->divisions_per_bar(), m->note_divisor());
+ cp->set_frame (m->frame());
+ } else {
+ cp = new MeterSection (m->frame(), m->beat(), m->bbt(), m->divisions_per_bar(), m->note_divisor());
+ cp->set_pulse (m->pulse());
+ }
+ cp->set_movable (m->movable());
+ copy.push_back (cp);
+ }
+ }
+
+ return ret;
+}
+
+bool
+TempoMap::can_solve_bbt (TempoSection* ts, const BBT_Time& bbt)
+{
+ Metrics copy;
+ TempoSection* new_section = 0;
+
+ {
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+ new_section = copy_metrics_and_point (copy, ts);
+ }
+
+ double const beat = bbt_to_beats_locked (copy, bbt);
+ bool ret = solve_map (copy, new_section, pulse_at_beat_locked (copy, beat));
+
+ Metrics::const_iterator d = copy.begin();
+ while (d != copy.end()) {
+ delete (*d);
+ ++d;
+ }
+
+ return ret;
+}
+
+/**
+* This is for a gui that needs to know the frame of a tempo section if it were to be moved to some bbt time,
+* taking any possible reordering as a consequence of this into account.
+* @param section - the section to be altered
+* @param bpm - the new Tempo
+* @param bbt - the bbt where the altered tempo will fall
+* @return returns - the position in frames where the new tempo section will lie.
+*/
+framepos_t
+TempoMap::predict_tempo_frame (TempoSection* section, const BBT_Time& bbt)
+{
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+ Metrics future_map;
+ framepos_t ret = 0;
+ TempoSection* new_section = copy_metrics_and_point (future_map, section);
+
+ const double beat = bbt_to_beats_locked (future_map, bbt);
+
+ if (solve_map (future_map, new_section, pulse_at_beat_locked (future_map, beat))) {
+ ret = new_section->frame();
+ } else {
+ ret = frame_at_beat_locked (_metrics, beat);
+ }
+
+ Metrics::const_iterator d = future_map.begin();
+ while (d != future_map.end()) {
+ delete (*d);
+ ++d;
+ }
+ return ret;
+}
+
+double
+TempoMap::predict_tempo_pulse (TempoSection* section, const framepos_t& frame)
+{
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+ Metrics future_map;
+ double ret = 0.0;
+ TempoSection* new_section = copy_metrics_and_point (future_map, section);
+
+ if (solve_map (future_map, new_section, frame)) {
+ ret = new_section->pulse();
+ } else {
+ ret = pulse_at_frame_locked (_metrics, frame);
+ }
- imaginary.sort (fcmp);
- if (section->position_lock_style() == AudioTime) {
- /* we're setting the pulse */
- section->set_position_lock_style (MusicTime);
- recompute_tempos (imaginary);
- section->set_position_lock_style (AudioTime);
- } else {
- recompute_tempos (imaginary);
+ Metrics::const_iterator d = future_map.begin();
+ while (d != future_map.end()) {
+ delete (*d);
+ ++d;
}
+ return ret;
+}
- if (check_solved (imaginary, false)) {
- recompute_meters (imaginary);
- return true;
+void
+TempoMap::gui_move_tempo_frame (TempoSection* ts, const framepos_t& frame)
+{
+ Metrics future_map;
+ {
+ Glib::Threads::RWLock::WriterLock lm (lock);
+ TempoSection* new_section = copy_metrics_and_point (future_map, ts);
+ if (solve_map (future_map, new_section, frame)) {
+ solve_map (_metrics, ts, frame);
+ }
}
- //dump (imaginary, std::cerr);
+ Metrics::const_iterator d = future_map.begin();
+ while (d != future_map.end()) {
+ delete (*d);
+ ++d;
+ }
- return false;
+ MetricPositionChanged (); // Emit Signal
}
void
-TempoMap::solve_map (Metrics& imaginary, MeterSection* section, const Meter& mt, const double& pulse)
+TempoMap::gui_move_tempo_beat (TempoSection* ts, const double& beat)
{
- MeterSection* prev_ms = 0;
- double accumulated_beats = 0.0;
- uint32_t accumulated_bars = 0;
-
- section->set_pulse (pulse);
-
- for (Metrics::iterator i = imaginary.begin(); i != imaginary.end(); ++i) {
- MeterSection* m;
- if ((m = dynamic_cast<MeterSection*> (*i)) != 0) {
- if (prev_ms) {
- double const beats_in_m = (m->pulse() - prev_ms->pulse()) * prev_ms->note_divisor();
- accumulated_beats += beats_in_m;
- accumulated_bars += (beats_in_m + 1) / prev_ms->divisions_per_bar();
- }
- if (m == section){
- section->set_frame (frame_at_pulse_locked (imaginary, pulse));
- pair<double, BBT_Time> b_bbt = make_pair (accumulated_beats, BBT_Time (accumulated_bars + 1, 1, 0));
- section->set_beat (b_bbt);
- prev_ms = section;
- continue;
- }
- if (prev_ms) {
- if (m->position_lock_style() == MusicTime) {
- const double pulse = prev_ms->pulse() + (m->beat() - prev_ms->beat()) / prev_ms->note_divisor();
- m->set_frame (frame_at_pulse_locked (imaginary, pulse));
- m->set_pulse (pulse);
- } else {
- pair<double, BBT_Time> b_bbt = make_pair (accumulated_beats, BBT_Time (accumulated_bars + 1, 1, 0));
- m->set_beat (b_bbt);
- const double pulse = prev_ms->pulse() + (m->beat() - prev_ms->beat()) / prev_ms->note_divisor();
- m->set_pulse (pulse);
- }
- }
- prev_ms = m;
+ Metrics future_map;
+ {
+ Glib::Threads::RWLock::WriterLock lm (lock);
+ TempoSection* new_section = copy_metrics_and_point (future_map, ts);
+ if (solve_map (future_map, new_section, pulse_at_beat_locked (future_map, beat))) {
+ solve_map (_metrics, ts, pulse_at_beat_locked (_metrics, beat));
}
}
- if (section->position_lock_style() == AudioTime) {
- /* we're setting the pulse */
- section->set_position_lock_style (MusicTime);
- recompute_meters (imaginary);
- section->set_position_lock_style (AudioTime);
- } else {
- recompute_meters (imaginary);
+ Metrics::const_iterator d = future_map.begin();
+ while (d != future_map.end()) {
+ delete (*d);
+ ++d;
}
+
+ MetricPositionChanged (); // Emit Signal
}
void
-TempoMap::solve_map (Metrics& imaginary, MeterSection* section, const Meter& mt, const framepos_t& frame)
+TempoMap::gui_move_meter (MeterSection* ms, const framepos_t& frame)
{
- MeterSection* prev_ms = 0;
-
- if (!section->movable()) {
- TempoSection* first_t;
- for (Metrics::const_iterator i = imaginary.begin(); i != imaginary.end(); ++i) {
- TempoSection* t;
- if ((t = dynamic_cast<TempoSection*> (*i)) != 0) {
- if (!t->movable()) {
- t->set_active (true);
- first_t = t;
- }
- if (t->movable() && t->active () && t->position_lock_style() == AudioTime && t->frame() < frame) {
- t->set_active (false);
- t->set_pulse (0.0);
- } else if (t->movable() && t->position_lock_style() == AudioTime && t->frame() > frame) {
- t->set_active (true);
- } else if (t->movable() && t->position_lock_style() == AudioTime && t->frame() == frame) {
- return;
- }
- }
- }
-
- Metrics future_map;
- TempoSection* new_section = copy_metrics_and_point (future_map, first_t);
+ {
+ Glib::Threads::RWLock::WriterLock lm (lock);
+ solve_map (_metrics, ms, frame);
+ }
- new_section->set_frame (frame);
- new_section->set_pulse (0.0);
- new_section->set_active (true);
+ MetricPositionChanged (); // Emit Signal
+}
- if (solve_map (future_map, new_section, Tempo (new_section->beats_per_minute(), new_section->note_type()), frame)) {
- first_t->set_frame (frame);
- first_t->set_pulse (0.0);
- first_t->set_active (true);
- solve_map (imaginary, first_t, Tempo (first_t->beats_per_minute(), first_t->note_type()), frame);
- } else {
- return;
- }
+void
+TempoMap::gui_move_meter (MeterSection* ms, const double& beat)
+{
+ {
+ Glib::Threads::RWLock::WriterLock lm (lock);
+ solve_map (_metrics, ms, pulse_at_beat_locked (_metrics, beat));
}
- double accumulated_beats = 0.0;
- uint32_t accumulated_bars = 0;
+ MetricPositionChanged (); // Emit Signal
+}
- section->set_frame (frame);
+bool
+TempoMap::gui_change_tempo (TempoSection* ts, const Tempo& bpm)
+{
+ Metrics future_map;
+ bool can_solve = false;
+ {
+ Glib::Threads::RWLock::WriterLock lm (lock);
+ TempoSection* new_section = copy_metrics_and_point (future_map, ts);
+ new_section->set_beats_per_minute (bpm.beats_per_minute());
+ recompute_tempos (future_map);
- for (Metrics::iterator i = imaginary.begin(); i != imaginary.end(); ++i) {
- MeterSection* m;
- if ((m = dynamic_cast<MeterSection*> (*i)) != 0) {
- if (prev_ms) {
- const double beats_in_m = (m->pulse() - prev_ms->pulse()) * prev_ms->note_divisor();
- accumulated_beats += beats_in_m;
- accumulated_bars += (beats_in_m + 1) / prev_ms->divisions_per_bar();
- }
- if (m == section){
- /*
- here we define the pulse for this frame.
- we're going to set it 'incorrectly' to the next integer and use this 'error'
- as an offset to the map as far as users of the public methods are concerned.
- (meters should go on absolute pulses to keep us sane)
- */
- pair<double, BBT_Time> b_bbt = make_pair (accumulated_beats, BBT_Time (accumulated_bars + 1, 1, 0));
- if (m->movable()) {
- m->set_pulse (pulse_at_frame_locked (imaginary, frame));
- } else {
- m->set_pulse (0.0);
- }
- m->set_beat (b_bbt);
- prev_ms = m;
- continue;
- }
- if (prev_ms) {
- if (m->position_lock_style() == MusicTime) {
- const double pulse = prev_ms->pulse() + (m->beat() - prev_ms->beat()) / prev_ms->note_divisor();
- m->set_frame (frame_at_pulse_locked (imaginary, pulse));
- m->set_pulse (pulse);
- } else {
- pair<double, BBT_Time> b_bbt = make_pair (accumulated_beats, BBT_Time (accumulated_bars + 1, 1, 0));
- m->set_beat (b_bbt);
- const double pulse = prev_ms->pulse() + (m->beat() - prev_ms->beat()) / prev_ms->note_divisor();
- m->set_pulse (pulse);
- }
- }
- prev_ms = m;
+ if (check_solved (future_map, true)) {
+ ts->set_beats_per_minute (bpm.beats_per_minute());
+ recompute_map (_metrics);
+ can_solve = true;
}
}
- if (section->position_lock_style() == MusicTime) {
- /* we're setting the frame */
- section->set_position_lock_style (AudioTime);
- recompute_meters (imaginary);
- section->set_position_lock_style (MusicTime);
- } else {
- recompute_meters (imaginary);
+ Metrics::const_iterator d = future_map.begin();
+ while (d != future_map.end()) {
+ delete (*d);
+ ++d;
}
- //dump (imaginary, std::cerr);
+ if (can_solve) {
+ MetricPositionChanged (); // Emit Signal
+ }
+ return can_solve;
}
framecnt_t
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- double const tick_at_time = beat_at_frame_locked (_metrics, pos) * BBT_Time::ticks_per_beat;
- double const bbt_ticks = bbt.ticks + (bbt.beats * BBT_Time::ticks_per_beat);
- double const total_beats = (tick_at_time + bbt_ticks) / BBT_Time::ticks_per_beat;
- framecnt_t const time_at_bbt = frame_at_beat_locked (_metrics, total_beats);
- framecnt_t const ret = time_at_bbt;
+ const double tick_at_time = beat_at_frame_locked (_metrics, pos) * BBT_Time::ticks_per_beat;
+ const double bbt_ticks = bbt.ticks + (bbt.beats * BBT_Time::ticks_per_beat);
+ const double total_beats = (tick_at_time + bbt_ticks) / BBT_Time::ticks_per_beat;
- return ret;
+ return frame_at_beat_locked (_metrics, total_beats);
}
framepos_t
}
}
- framepos_t const ret_frame = frame_at_beat_locked (_metrics, beats + (ticks / BBT_Time::ticks_per_beat));
+ const framepos_t ret_frame = frame_at_beat_locked (_metrics, beats + (ticks / BBT_Time::ticks_per_beat));
return ret_frame;
}
+void
+TempoMap::round_bbt (BBT_Time& when, const int32_t& sub_num)
+{
+ if (sub_num == -1) {
+ const double bpb = meter_section_at_beat (bbt_to_beats_locked (_metrics, when)).divisions_per_bar();
+ if ((double) when.beats > bpb / 2.0) {
+ ++when.bars;
+ }
+ when.beats = 1;
+ when.ticks = 0;
+ return;
+ } else if (sub_num == 0) {
+ const double bpb = meter_section_at_beat (bbt_to_beats_locked (_metrics, when)).divisions_per_bar();
+ if ((double) when.ticks > BBT_Time::ticks_per_beat / 2.0) {
+ ++when.beats;
+ while ((double) when.beats > bpb) {
+ ++when.bars;
+ when.beats -= (uint32_t) floor (bpb);
+ }
+ }
+ when.ticks = 0;
+ return;
+ }
+ const uint32_t ticks_one_subdivisions_worth = BBT_Time::ticks_per_beat / sub_num;
+ double rem;
+ if ((rem = fmod ((double) when.ticks, (double) ticks_one_subdivisions_worth)) > (ticks_one_subdivisions_worth / 2.0)) {
+ /* closer to the next subdivision, so shift forward */
+
+ when.ticks = when.ticks + (ticks_one_subdivisions_worth - rem);
+
+ if (when.ticks > Timecode::BBT_Time::ticks_per_beat) {
+ ++when.beats;
+ when.ticks -= Timecode::BBT_Time::ticks_per_beat;
+ }
+
+ } else if (rem > 0) {
+ /* closer to previous subdivision, so shift backward */
+
+ if (rem > when.ticks) {
+ if (when.beats == 0) {
+ /* can't go backwards past zero, so ... */
+ }
+ /* step back to previous beat */
+ --when.beats;
+ when.ticks = Timecode::BBT_Time::ticks_per_beat - rem;
+ } else {
+ when.ticks = when.ticks - rem;
+ }
+ }
+}
+
framepos_t
TempoMap::round_to_type (framepos_t frame, RoundMode dir, BBTPointType type)
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- double const beat_at_framepos = beat_at_frame_locked (_metrics, frame);
+ const double beat_at_framepos = beat_at_frame_locked (_metrics, frame);
BBT_Time bbt (beats_to_bbt_locked (_metrics, beat_at_framepos));
switch (type) {
/* find bar previous to 'frame' */
bbt.beats = 1;
bbt.ticks = 0;
- return frame_time (bbt);
+ return frame_time_locked (_metrics, bbt);
} else if (dir > 0) {
/* find bar following 'frame' */
++bbt.bars;
bbt.beats = 1;
bbt.ticks = 0;
- return frame_time (bbt);
+ return frame_time_locked (_metrics, bbt);
} else {
/* true rounding: find nearest bar */
- framepos_t raw_ft = frame_time (bbt);
+ framepos_t raw_ft = frame_time_locked (_metrics, bbt);
bbt.beats = 1;
bbt.ticks = 0;
- framepos_t prev_ft = frame_time (bbt);
+ framepos_t prev_ft = frame_time_locked (_metrics, bbt);
++bbt.bars;
- framepos_t next_ft = frame_time (bbt);
+ framepos_t next_ft = frame_time_locked (_metrics, bbt);
if ((raw_ft - prev_ft) > (next_ft - prev_ft) / 2) {
return next_ft;
framepos_t lower, framepos_t upper)
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- int32_t const upper_beat = (int32_t) ceil (beat_at_frame_locked (_metrics, upper));
- int32_t cnt = floor (beat_at_frame_locked (_metrics, lower));
+ const int32_t upper_beat = (int32_t) floor (beat_at_frame_locked (_metrics, upper));
+ int32_t cnt = ceil (beat_at_frame_locked (_metrics, lower));
+ framecnt_t pos = 0;
/* although the map handles negative beats, bbt doesn't. */
if (cnt < 0.0) {
cnt = 0.0;
}
- while (cnt <= upper_beat) {
- framecnt_t pos = frame_at_beat_locked (_metrics, cnt);
- TempoSection const tempo = tempo_section_at_locked (pos);
- MeterSection const meter = meter_section_at_locked (pos);
- BBT_Time const bbt = beats_to_bbt (cnt);
-
- points.push_back (BBTPoint (meter, Tempo (tempo.beats_per_minute(), tempo.note_type()), pos, bbt.bars, bbt.beats));
+ while (pos < upper) {
+ pos = frame_at_beat_locked (_metrics, cnt);
+ const TempoSection tempo = tempo_section_at_locked (_metrics, pos);
+ const MeterSection meter = meter_section_at_locked (_metrics, pos);
+ const BBT_Time bbt = beats_to_bbt (cnt);
+ points.push_back (BBTPoint (meter, tempo_at_locked (_metrics, pos), pos, bbt.bars, bbt.beats, tempo.c_func()));
++cnt;
}
}
TempoMap::tempo_section_at (framepos_t frame) const
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- return tempo_section_at_locked (frame);
+ return tempo_section_at_locked (_metrics, frame);
}
const TempoSection&
-TempoMap::tempo_section_at_locked (framepos_t frame) const
+TempoMap::tempo_section_at_locked (const Metrics& metrics, framepos_t frame) const
{
Metrics::const_iterator i;
TempoSection* prev = 0;
- for (i = _metrics.begin(); i != _metrics.end(); ++i) {
+ for (i = metrics.begin(); i != metrics.end(); ++i) {
TempoSection* t;
if ((t = dynamic_cast<TempoSection*> (*i)) != 0) {
if (!t->active()) {
continue;
}
- if (t->frame() > frame) {
+ if (prev && t->frame() > frame) {
break;
}
return *prev;
}
+const TempoSection&
+TempoMap::tempo_section_at_beat_locked (const Metrics& metrics, const double& beat) const
+{
+ TempoSection* prev_t = 0;
+ const MeterSection* prev_m = &meter_section_at_beat_locked (metrics, beat);
+
+ for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
+ TempoSection* t;
+ if ((t = dynamic_cast<TempoSection*> (*i)) != 0) {
+ if (prev_t && ((t->pulse() - prev_m->pulse()) * prev_m->note_divisor()) + prev_m->beat() > beat) {
+ break;
+ }
+ prev_t = t;
+ }
+
+ }
+ return *prev_t;
+}
/* don't use this to calculate length (the tempo is only correct for this frame).
do that stuff based on the beat_at_frame and frame_at_beat api
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- const TempoSection* ts_at = &tempo_section_at_locked (frame);
+ const TempoSection* ts_at = &tempo_section_at_locked (_metrics, frame);
const TempoSection* ts_after = 0;
Metrics::const_iterator i;
}
const Tempo
-TempoMap::tempo_at (const framepos_t& frame) const
+TempoMap::tempo_at_locked (const Metrics& metrics, const framepos_t& frame) const
{
- Glib::Threads::RWLock::ReaderLock lm (lock);
- //frameoffset_t const frame_off = frame_offset_at (_metrics, frame);
- TempoSection* prev_ts = 0;
+ TempoSection* prev_t = 0;
Metrics::const_iterator i;
if (!t->active()) {
continue;
}
- if ((prev_ts) && t->frame() > frame) {
+ if ((prev_t) && t->frame() > frame) {
/* t is the section past frame */
- double const ret = prev_ts->tempo_at_frame (frame, _frame_rate) * prev_ts->note_type();
- Tempo const ret_tempo (ret, prev_ts->note_type());
+ const double ret_bpm = prev_t->tempo_at_frame (frame, _frame_rate) * prev_t->note_type();
+ const Tempo ret_tempo (ret_bpm, prev_t->note_type());
return ret_tempo;
}
- prev_ts = t;
+ prev_t = t;
}
}
- double const ret = prev_ts->beats_per_minute();
- Tempo const ret_tempo (ret, prev_ts->note_type ());
+ const double ret = prev_t->beats_per_minute();
+ const Tempo ret_tempo (ret, prev_t->note_type ());
return ret_tempo;
}
-const MeterSection&
-TempoMap::meter_section_at (framepos_t frame) const
+const Tempo
+TempoMap::tempo_at (const framepos_t& frame) const
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- return meter_section_at_locked (frame);
+ return tempo_at_locked (_metrics, frame);
}
const MeterSection&
-TempoMap::meter_section_at_locked (framepos_t frame) const
+TempoMap::meter_section_at_locked (const Metrics& metrics, framepos_t frame) const
{
- //framepos_t const frame_off = frame + frame_offset_at (_metrics, frame);
Metrics::const_iterator i;
MeterSection* prev = 0;
- for (i = _metrics.begin(); i != _metrics.end(); ++i) {
+ for (i = metrics.begin(); i != metrics.end(); ++i) {
MeterSection* m;
if ((m = dynamic_cast<MeterSection*> (*i)) != 0) {
return *prev;
}
+
+const MeterSection&
+TempoMap::meter_section_at (framepos_t frame) const
+{
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+ return meter_section_at_locked (_metrics, frame);
+}
+
+const MeterSection&
+TempoMap::meter_section_at_beat_locked (const Metrics& metrics, const double& beat) const
+{
+ MeterSection* prev_m = 0;
+
+ for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
+ MeterSection* m;
+ if ((m = dynamic_cast<MeterSection*> (*i)) != 0) {
+ if (prev_m && m->beat() > beat) {
+ break;
+ }
+ prev_m = m;
+ }
+
+ }
+ return *prev_m;
+}
+
+const MeterSection&
+TempoMap::meter_section_at_beat (double beat) const
+{
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+ return meter_section_at_beat_locked (_metrics, beat);
+}
+
const Meter&
TempoMap::meter_at (framepos_t frame) const
{
return m.meter();
}
+void
+TempoMap::fix_legacy_session ()
+{
+ MeterSection* prev_m = 0;
+ TempoSection* prev_t = 0;
+
+ for (Metrics::iterator i = _metrics.begin(); i != _metrics.end(); ++i) {
+ MeterSection* m;
+ TempoSection* t;
+
+ if ((m = dynamic_cast<MeterSection*>(*i)) != 0) {
+ if (!m->movable()) {
+ pair<double, BBT_Time> bbt = make_pair (0.0, BBT_Time (1, 1, 0));
+ m->set_beat (bbt);
+ m->set_pulse (0.0);
+ m->set_frame (0);
+ m->set_position_lock_style (AudioTime);
+ prev_m = m;
+ continue;
+ }
+ if (prev_m) {
+ pair<double, BBT_Time> start = make_pair (((m->bbt().bars - 1) * prev_m->note_divisor())
+ + (m->bbt().beats - 1)
+ + (m->bbt().ticks / BBT_Time::ticks_per_beat)
+ , m->bbt());
+ m->set_beat (start);
+ const double start_beat = ((m->bbt().bars - 1) * prev_m->note_divisor())
+ + (m->bbt().beats - 1)
+ + (m->bbt().ticks / BBT_Time::ticks_per_beat);
+ m->set_pulse (start_beat / prev_m->note_divisor());
+ }
+ prev_m = m;
+ } else if ((t = dynamic_cast<TempoSection*>(*i)) != 0) {
+
+ if (!t->active()) {
+ continue;
+ }
+
+ if (!t->movable()) {
+ t->set_pulse (0.0);
+ t->set_frame (0);
+ t->set_position_lock_style (AudioTime);
+ prev_t = t;
+ continue;
+ }
+
+ if (prev_t) {
+ const double beat = ((t->legacy_bbt().bars - 1) * ((prev_m) ? prev_m->note_divisor() : 4.0))
+ + (t->legacy_bbt().beats - 1)
+ + (t->legacy_bbt().ticks / BBT_Time::ticks_per_beat);
+ if (prev_m) {
+ t->set_pulse (beat / prev_m->note_divisor());
+ } else {
+ /* really shouldn't happen but.. */
+ t->set_pulse (beat / 4.0);
+ }
+ }
+ prev_t = t;
+ }
+ }
+}
+
XMLNode&
TempoMap::get_state ()
{
XMLNodeList nlist;
XMLNodeConstIterator niter;
Metrics old_metrics (_metrics);
- MeterSection* last_meter = 0;
_metrics.clear();
nlist = node.children();
try {
TempoSection* ts = new TempoSection (*child);
_metrics.push_back (ts);
-
- if (ts->bar_offset() < 0.0) {
- if (last_meter) {
- //ts->update_bar_offset_from_bbt (*last_meter);
- }
- }
}
catch (failed_constructor& err){
try {
MeterSection* ms = new MeterSection (*child);
_metrics.push_back (ms);
- last_meter = ms;
}
catch (failed_constructor& err) {
MetricSectionSorter cmp;
_metrics.sort (cmp);
}
+
/* check for legacy sessions where bbt was the base musical unit for tempo */
- for (Metrics::iterator i = _metrics.begin(); i != _metrics.end(); ++i) {
- MeterSection* m;
+ for (Metrics::const_iterator i = _metrics.begin(); i != _metrics.end(); ++i) {
TempoSection* t;
- MeterSection* prev_ms = 0;
- TempoSection* prev_ts = 0;
- if ((m = dynamic_cast<MeterSection*>(*i)) != 0) {
- if (prev_ms && prev_ms->pulse() < 0.0) {
- /*XX we cannot possibly make this work??. */
- pair<double, BBT_Time> start = make_pair (((prev_ms->bbt().bars - 1) * prev_ms->note_divisor()) + (prev_ms->bbt().beats - 1) + (prev_ms->bbt().ticks / BBT_Time::ticks_per_beat), prev_ms->bbt());
- prev_ms->set_beat (start);
- const double start_pulse = ((prev_ms->bbt().bars - 1) * prev_ms->note_divisor()) + (prev_ms->bbt().beats - 1) + (prev_ms->bbt().ticks / BBT_Time::ticks_per_beat);
- prev_ms->set_pulse (start_pulse);
- }
- prev_ms = m;
- } else if ((t = dynamic_cast<TempoSection*>(*i)) != 0) {
- if (!t->active()) {
- continue;
- }
- if (prev_ts && prev_ts->pulse() < 0.0) {
- double const start = ((prev_ts->legacy_bbt().bars - 1) * prev_ms->note_divisor()) + (prev_ts->legacy_bbt().beats - 1) + (prev_ts->legacy_bbt().ticks / BBT_Time::ticks_per_beat);
- prev_ts->set_pulse (start);
+ if ((t = dynamic_cast<TempoSection*> (*i)) != 0) {
+ if (t->legacy_bbt().bars != 0) {
+ fix_legacy_session();
+ break;
}
- prev_ts = t;
+ break;
}
}
+
/* check for multiple tempo/meters at the same location, which
ardour2 somehow allowed.
*/
for (Metrics::iterator i = _metrics.begin(); i != _metrics.end(); ++i) {
if (prev != _metrics.end()) {
MeterSection* ms;
- MeterSection* prev_ms;
+ MeterSection* prev_m;
TempoSection* ts;
- TempoSection* prev_ts;
- if ((prev_ms = dynamic_cast<MeterSection*>(*prev)) != 0 && (ms = dynamic_cast<MeterSection*>(*i)) != 0) {
- if (prev_ms->pulse() == ms->pulse()) {
- cerr << string_compose (_("Multiple meter definitions found at %1"), prev_ms->pulse()) << endmsg;
- error << string_compose (_("Multiple meter definitions found at %1"), prev_ms->pulse()) << endmsg;
+ TempoSection* prev_t;
+ if ((prev_m = dynamic_cast<MeterSection*>(*prev)) != 0 && (ms = dynamic_cast<MeterSection*>(*i)) != 0) {
+ if (prev_m->pulse() == ms->pulse()) {
+ cerr << string_compose (_("Multiple meter definitions found at %1"), prev_m->pulse()) << endmsg;
+ error << string_compose (_("Multiple meter definitions found at %1"), prev_m->pulse()) << endmsg;
return -1;
}
- } else if ((prev_ts = dynamic_cast<TempoSection*>(*prev)) != 0 && (ts = dynamic_cast<TempoSection*>(*i)) != 0) {
- if (prev_ts->pulse() == ts->pulse()) {
- cerr << string_compose (_("Multiple tempo definitions found at %1"), prev_ts->pulse()) << endmsg;
- error << string_compose (_("Multiple tempo definitions found at %1"), prev_ts->pulse()) << endmsg;
+ } else if ((prev_t = dynamic_cast<TempoSection*>(*prev)) != 0 && (ts = dynamic_cast<TempoSection*>(*i)) != 0) {
+ if (prev_t->pulse() == ts->pulse()) {
+ cerr << string_compose (_("Multiple tempo definitions found at %1"), prev_t->pulse()) << endmsg;
+ error << string_compose (_("Multiple tempo definitions found at %1"), prev_t->pulse()) << endmsg;
return -1;
}
}
Glib::Threads::RWLock::ReaderLock lm (lock, Glib::Threads::TRY_LOCK);
const MeterSection* m;
const TempoSection* t;
- const TempoSection* prev_ts = 0;
+ const TempoSection* prev_t = 0;
for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
if ((t = dynamic_cast<const TempoSection*>(*i)) != 0) {
- o << "Tempo @ " << *i << " (Bar-offset: " << t->bar_offset() << ") " << t->beats_per_minute() << " BPM (pulse = 1/" << t->note_type() << ") at " << t->pulse() << " frame= " << t->frame() << " (movable? "
+ o << "Tempo @ " << *i << t->beats_per_minute() << " BPM (pulse = 1/" << t->note_type() << ") at " << t->pulse() << " frame= " << t->frame() << " (movable? "
<< t->movable() << ')' << " pos lock: " << enum_2_string (t->position_lock_style()) << std::endl;
o << "current : " << t->beats_per_minute() << " | " << t->pulse() << " | " << t->frame() << std::endl;
- if (prev_ts) {
- o << "previous : " << prev_ts->beats_per_minute() << " | " << prev_ts->pulse() << " | " << prev_ts->frame() << std::endl;
- o << "calculated : " << prev_ts->tempo_at_pulse (t->pulse()) * prev_ts->note_type() << " | " << prev_ts->pulse_at_tempo (t->pulses_per_minute(), t->frame(), _frame_rate) << " | " << prev_ts->frame_at_tempo (t->pulses_per_minute(), t->pulse(), _frame_rate) << std::endl;
+ if (prev_t) {
+ o << "previous : " << prev_t->beats_per_minute() << " | " << prev_t->pulse() << " | " << prev_t->frame() << std::endl;
+ o << "calculated : " << prev_t->tempo_at_pulse (t->pulse()) * prev_t->note_type() << " | " << prev_t->pulse_at_tempo (t->pulses_per_minute(), t->frame(), _frame_rate) << " | " << prev_t->frame_at_tempo (t->pulses_per_minute(), t->pulse(), _frame_rate) << std::endl;
}
- prev_ts = t;
+ prev_t = t;
} else if ((m = dynamic_cast<const MeterSection*>(*i)) != 0) {
o << "Meter @ " << *i << ' ' << m->divisions_per_bar() << '/' << m->note_divisor() << " at " << m->bbt() << " frame= " << m->frame()
<< " pulse: " << m->pulse() << " beat : " << m->beat() << " pos lock: " << enum_2_string (m->position_lock_style()) << " (movable? " << m->movable() << ')' << endl;
}
pos_bbt.beats += op.beats;
/* the meter in effect will start on the bar */
- double divisions_per_bar = meter_section_at (bbt_to_beats_locked (_metrics, BBT_Time (pos_bbt.bars + op.bars, 1, 0))).divisions_per_bar();
+ double divisions_per_bar = meter_section_at_beat (bbt_to_beats_locked (_metrics, BBT_Time (pos_bbt.bars + op.bars, 1, 0))).divisions_per_bar();
while (pos_bbt.beats >= divisions_per_bar + 1) {
++pos_bbt.bars;
- divisions_per_bar = meter_section_at (bbt_to_beats_locked (_metrics, BBT_Time (pos_bbt.bars + op.bars, 1, 0))).divisions_per_bar();
+ divisions_per_bar = meter_section_at_beat (bbt_to_beats_locked (_metrics, BBT_Time (pos_bbt.bars + op.bars, 1, 0))).divisions_per_bar();
pos_bbt.beats -= divisions_per_bar;
}
pos_bbt.bars += op.bars;
if ((ts = dynamic_cast<const TempoSection*> (§ion)) != 0) {
o << *((const Tempo*) ts);
} else if ((ms = dynamic_cast<const MeterSection*> (§ion)) != 0) {
- //o << *((const Meter*) ms);
+ o << *((const Meter*) ms);
}
return o;
projects / ardour.git / blobdiff