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_movable (string_is_affirmative (prop->value()));
- if ((prop = node.property ("bar-offset")) == 0) {
- _bar_offset = -1.0;
+ if ((prop = node.property ("active")) == 0) {
+ warning << _("TempoSection XML node has no \"active\" property") << endmsg;
+ set_active(true);
} 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();
- }
+ set_active (string_is_affirmative (prop->value()));
}
if ((prop = node.property ("tempo-type")) == 0) {
}
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");
+ root->add_property ("active", buf);
root->add_property ("tempo-type", enum_2_string (_type));
root->add_property ("lock-style", enum_2_string (position_lock_style()));
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)
{
/** returns the tempo in whole pulses per minute at the zero-based (relative to session) frame.
*/
double
-TempoSection::tempo_at_frame (framepos_t f, framecnt_t frame_rate) const
+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();
}
note that the tempo map may have multiple such values.
*/
framepos_t
-TempoSection::frame_at_tempo (double bpm, double b, framecnt_t frame_rate) const
+TempoSection::frame_at_tempo (const double& ppm, const double& b, const framecnt_t& frame_rate) const
{
- if (_type == Constant) {
- return ((b - pulse()) * frames_per_beat (frame_rate)) + frame();
+ if (_type == Constant || _c_func == 0.0) {
+ return ((b - pulse()) * frames_per_pulse (frame_rate)) + frame();
}
- return minute_to_frame (time_at_pulse_tempo (bpm), frame_rate) + frame();
+ return minute_to_frame (time_at_pulse_tempo (ppm), frame_rate) + frame();
}
/** returns the tempo in pulses per minute at the zero-based (relative to session) beat.
*/
double
-TempoSection::tempo_at_pulse (double b) const
+TempoSection::tempo_at_pulse (const double& p) const
{
- if (_type == Constant) {
+ if (_type == Constant || _c_func == 0.0) {
return pulses_per_minute();
}
- double const bpm = pulse_tempo_at_pulse (b - pulse());
- return bpm;
+ double const ppm = pulse_tempo_at_pulse (p - pulse());
+ return ppm;
}
/** returns the zero-based beat (relative to session)
note that the session tempo map may have multiple beats at a given tempo.
*/
double
-TempoSection::pulse_at_tempo (double bpm, framepos_t f, framecnt_t frame_rate) const
+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_beat (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 (bpm) + pulse();
+ return pulse_at_pulse_tempo (ppm) + pulse();
}
/** returns the zero-based pulse (relative to session origin)
lies.
*/
double
-TempoSection::pulse_at_frame (framepos_t f, framecnt_t frame_rate) const
+TempoSection::pulse_at_frame (const framepos_t& f, const framecnt_t& frame_rate) const
{
- if (_type == Constant) {
- return ((f - frame()) / frames_per_beat (frame_rate)) + pulse();
+ if (_type == Constant || _c_func == 0.0) {
+ return ((f - frame()) / frames_per_pulse (frame_rate)) + pulse();
}
return pulse_at_time (frame_to_minute (f - frame(), frame_rate)) + pulse();
*/
framepos_t
-TempoSection::frame_at_pulse (double b, framecnt_t frame_rate) const
+TempoSection::frame_at_pulse (const double& p, const framecnt_t& frame_rate) const
{
- if (_type == Constant) {
- return (framepos_t) floor ((b - pulse()) * frames_per_beat (frame_rate)) + frame();
+ if (_type == Constant || _c_func == 0.0) {
+ return (framepos_t) floor ((p - pulse()) * frames_per_pulse (frame_rate)) + frame();
}
- return minute_to_frame (time_at_pulse (b - pulse()), frame_rate) + frame();
+ return minute_to_frame (time_at_pulse (p - pulse()), frame_rate) + frame();
}
/*
and duration (pulses into global start) of some later tempo section.
*/
double
-TempoSection::compute_c_func_pulse (double end_bpm, double end_pulse, framecnt_t frame_rate)
+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::compute_c_func_frame (double end_bpm, framepos_t end_frame, framecnt_t frame_rate) const
+TempoSection::compute_c_func_frame (const double& end_bpm, const framepos_t& end_frame, const framecnt_t& frame_rate) const
{
return c_func (end_bpm, frame_to_minute (end_frame - frame(), frame_rate));
}
framecnt_t
-TempoSection::minute_to_frame (double time, framecnt_t frame_rate) const
+TempoSection::minute_to_frame (const double& time, const framecnt_t& frame_rate) const
{
return (framecnt_t) floor ((time * 60.0 * frame_rate) + 0.5);
}
double
-TempoSection::frame_to_minute (framecnt_t frame, framecnt_t frame_rate) const
+TempoSection::frame_to_minute (const framecnt_t& frame, const framecnt_t& frame_rate) const
{
return (frame / (double) frame_rate) / 60.0;
}
/* tempo in ppm at time in minutes */
double
-TempoSection::pulse_tempo_at_time (double time) const
+TempoSection::pulse_tempo_at_time (const double& time) const
{
return exp (_c_func * time) * pulses_per_minute();
}
/* time in minutes at tempo in ppm */
double
-TempoSection::time_at_pulse_tempo (double pulse_tempo) const
+TempoSection::time_at_pulse_tempo (const double& pulse_tempo) const
{
return log (pulse_tempo / pulses_per_minute()) / _c_func;
}
/* tick at tempo in ppm */
double
-TempoSection::pulse_at_pulse_tempo (double pulse_tempo) const
+TempoSection::pulse_at_pulse_tempo (const double& pulse_tempo) const
{
return (pulse_tempo - pulses_per_minute()) / _c_func;
}
/* tempo in ppm at tick */
double
-TempoSection::pulse_tempo_at_pulse (double pulse) const
+TempoSection::pulse_tempo_at_pulse (const double& pulse) const
{
return (pulse * _c_func) + pulses_per_minute();
}
/* pulse at time in minutes */
double
-TempoSection::pulse_at_time (double time) const
+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 (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)
+TempoSection::time_at_pulse (const double& pulse) const
{
- 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;
}
/***********************************************************************/
const XMLProperty *prop;
BBT_Time bbt;
double pulse = 0.0;
+ double beat = 0.0;
framepos_t frame = 0;
pair<double, BBT_Time> start;
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;
}
}
+ set_pulse (pulse);
+
+ if ((prop = node.property ("beat")) != 0) {
+ if (sscanf (prop->value().c_str(), "%lf", &beat) != 1) {
+ error << _("MeterSection XML node has an illegal \"beat\" value") << endmsg;
+ }
+ }
- start.first = pulse;
+ 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;
- set_pulse (start);
+ set_beat (start);
if ((prop = node.property ("frame")) != 0) {
if (sscanf (prop->value().c_str(), "%li", &frame) != 1) {
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&
char buf[256];
LocaleGuard lg;
+ snprintf (buf, sizeof (buf), "%lf", pulse());
+ root->add_property ("pulse", buf);
snprintf (buf, sizeof (buf), "%" PRIu32 "|%" PRIu32 "|%" PRIu32,
bbt().bars,
bbt().beats,
bbt().ticks);
root->add_property ("bbt", buf);
- snprintf (buf, sizeof (buf), "%lf", pulse());
- root->add_property ("pulse", buf);
+ snprintf (buf, sizeof (buf), "%lf", beat());
+ root->add_property ("beat", buf);
snprintf (buf, sizeof (buf), "%f", _note_type);
root->add_property ("note-type", buf);
snprintf (buf, sizeof (buf), "%li", frame());
}
/***********************************************************************/
+/*
+ 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, 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);
corrected.first = bbt_to_beats_locked (_metrics, corrected.second);
warning << string_compose (_("Meter changes can only be positioned on the first beat of a bar. Moving from %1 to %2"),
m->bbt(), corrected.second) << endmsg;
- m->set_pulse (corrected);
+ //m->set_pulse (corrected);
}
}
*/
*(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 (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;
}
}
}
void
-TempoMap::replace_tempo (const TempoSection& ts, const Tempo& tempo, const double& where, TempoSection::Type type)
+TempoMap::replace_tempo (const TempoSection& ts, const Tempo& tempo, const double& pulse, TempoSection::Type type)
{
{
Glib::Threads::RWLock::WriterLock lm (lock);
TempoSection& first (first_tempo());
if (ts.pulse() != first.pulse()) {
remove_tempo_locked (ts);
- add_tempo_locked (tempo, where, true, type);
+ add_tempo_locked (tempo, pulse, true, type);
} else {
first.set_type (type);
{
add_tempo_locked (tempo, frame, true, type);
} else {
first.set_type (type);
+ first.set_pulse (0.0);
+ first.set_position_lock_style (AudioTime);
{
/* cannot move the first tempo section */
*static_cast<Tempo*>(&first) = tempo;
}
}
}
+
PropertyChanged (PropertyChange ());
}
-void
-TempoMap::add_tempo (const Tempo& tempo, double where, ARDOUR::TempoSection::Type type)
+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, where, true, type);
+ ts = add_tempo_locked (tempo, pulse, true, type);
}
PropertyChanged (PropertyChange ());
+
+ return ts;
}
-void
-TempoMap::add_tempo (const Tempo& tempo, framepos_t frame, ARDOUR::TempoSection::Type type)
+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
-TempoMap::add_tempo_locked (const Tempo& tempo, double where, bool recompute, ARDOUR::TempoSection::Type type)
+TempoSection*
+TempoMap::add_tempo_locked (const Tempo& tempo, double pulse, bool recompute, ARDOUR::TempoSection::Type type)
{
- double pulse = pulse_at_beat (_metrics, where);
- 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());
- if (ms.pulse() != first.pulse()) {
+
+ if (ms.movable()) {
remove_meter_locked (ms);
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;
- recompute_map (_metrics);
+ first.set_position_lock_style (AudioTime);
}
+ recompute_map (_metrics);
}
PropertyChanged (PropertyChange ());
{
{
Glib::Threads::RWLock::WriterLock lm (lock);
- MeterSection& first (first_meter());
- 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;
- recompute_map (_metrics);
+ first.set_position_lock_style (AudioTime);
+ first.set_pulse (0.0);
+ first.set_frame (frame);
+ pair<double, BBT_Time> beat = make_pair (0.0, BBT_Time (1, 1, 0));
+ first.set_beat (beat);
+ first_t.set_frame (first.frame());
+ first_t.set_pulse (0.0);
+ first_t.set_position_lock_style (AudioTime);
}
+ recompute_map (_metrics);
}
-
PropertyChanged (PropertyChange ());
}
-void
-TempoMap::add_meter (const Meter& meter, double beat, BBT_Time where)
+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, 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
where.beats = 1;
where.bars++;
}
-
/* new meters *always* start on a beat. */
where.ticks = 0;
- double pulse = pulse_at_beat (_metrics, beat);
-
- MeterSection* new_meter = new MeterSection (pulse, where, meter.divisions_per_bar(), meter.note_divisor());
+ 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());
+
+ double pulse = pulse_at_frame_locked (_metrics, frame);
+ new_meter->set_pulse (pulse);
- MeterSection* new_meter = new MeterSection (frame, meter.divisions_per_bar(), meter.note_divisor());
- double paf = pulse_at_frame_locked (_metrics, frame);
- pair<double, BBT_Time> beat = make_pair (paf, beats_to_bbt_locked (_metrics, beat_at_pulse (_metrics, paf)));
- new_meter->set_pulse (beat);
do_insert (new_meter);
if (recompute) {
- solve_map (_metrics, new_meter, Meter (new_meter->divisions_per_bar(), new_meter->note_divisor()), frame);
- }
-
-}
-
-/**
-* 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)
-{
- 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 (future_map, beat))) {
- ret = new_section->frame();
- } else {
- ret = frame_at_beat_locked (future_map, beat);
- }
-
- Metrics::const_iterator d = future_map.begin();
- while (d != future_map.end()) {
- delete (*d);
- ++d;
- }
- return ret;
-}
-
-double
-TempoMap::predict_tempo_beat (TempoSection* section, const Tempo& bpm, 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, bpm, frame)) {
- ret = beat_at_pulse (future_map, new_section->pulse());
- } else {
- ret = beat_at_frame_locked (future_map, frame);
- }
-
- Metrics::const_iterator d = future_map.begin();
- while (d != future_map.end()) {
- delete (*d);
- ++d;
- }
- return ret;
-}
-
-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);
- }
- }
-
- Metrics::const_iterator d = future_map.begin();
- while (d != future_map.end()) {
- delete (*d);
- ++d;
- }
-
- MetricPositionChanged (); // Emit Signal
-}
-
-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 (future_map, beat))) {
- solve_map (_metrics, ts, bpm, beat);
- }
- }
-
- Metrics::const_iterator d = future_map.begin();
- while (d != future_map.end()) {
- delete (*d);
- ++d;
- }
-
- MetricPositionChanged (); // Emit Signal
-}
-
-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);
- }
-
- MetricPositionChanged (); // Emit Signal
-}
-
-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 (_metrics, beat));
- }
-
- MetricPositionChanged (); // Emit Signal
-}
-
-TempoSection*
-TempoMap::copy_metrics_and_point (Metrics& copy, TempoSection* section)
-{
- 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());
- }
- copy.push_back (ret);
- continue;
- }
- if (t->position_lock_style() == MusicTime) {
- copy.push_back (new TempoSection (t->pulse(), t->beats_per_minute(), t->note_type(), t->type()));
- } else {
- copy.push_back (new TempoSection (t->frame(), t->beats_per_minute(), t->note_type(), t->type()));
- }
- }
- if ((m = dynamic_cast<MeterSection *> (*i)) != 0) {
- if (m->position_lock_style() == MusicTime) {
- copy.push_back (new MeterSection (m->pulse(), m->bbt(), m->divisions_per_bar(), m->note_divisor()));
- } else {
- copy.push_back (new MeterSection (m->frame(), m->bbt(), 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, beat);
-
- Metrics::const_iterator d = copy.begin();
- while (d != copy.end()) {
- delete (*d);
- ++d;
+ solve_map (_metrics, new_meter, frame);
}
- return ret;
+ return new_meter;
}
void
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;
TempoSection* t;
if ((t = dynamic_cast<TempoSection*>(*i)) != 0) {
+ if (!t->active()) {
+ continue;
+ }
if (!first) {
first = t;
}
}
}
- fatal << _("programming error: no tempo section in tempo map!") << endmsg;
+ fatal << _("programming error: no meter section in tempo map!") << endmsg;
abort(); /*NOTREACHED*/
return *m;
}
for (Metrics::const_iterator i = _metrics.begin(); i != _metrics.end(); ++i) {
if ((t = dynamic_cast<const TempoSection *> (*i)) != 0) {
- return *t;
+ if (!t->active()) {
+ continue;
+ }
+ if (!t->movable()) {
+ return *t;
+ }
}
}
for (Metrics::const_iterator i = _metrics.begin(); i != _metrics.end(); ++i) {
if ((t = dynamic_cast<TempoSection *> (*i)) != 0) {
- return *t;
+ if (!t->active()) {
+ continue;
+ }
+ 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 = dynamic_cast<TempoSection*> (*i)) != 0) {
- if (prev_ts) {
+ if (!t->active()) {
+ continue;
+ }
+ 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;
for (Metrics::const_iterator mi = metrics.begin(); mi != metrics.end(); ++mi) {
if ((meter = dynamic_cast<MeterSection*> (*mi)) != 0) {
- if (prev_m) {
- accumulated_beats += (meter->pulse() - prev_m->pulse()) * prev_m->note_divisor();
- }
if (meter->position_lock_style() == AudioTime) {
- pair<double, BBT_Time> pr;
- pr.first = ceil (pulse_at_frame_locked (metrics, meter->frame()));
- BBT_Time const where = beats_to_bbt_locked (metrics, accumulated_beats);
- pr.second = where;
- meter->set_pulse (pr);
+ double pulse = 0.0;
+ 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 {
+ 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 {
- meter->set_frame (frame_at_pulse_locked (metrics, meter->pulse()));
+ double pulse = 0.0;
+ pair<double, BBT_Time> new_beat;
+ if (prev_m) {
+ 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);
}
- meter->set_beat (accumulated_beats);
+
prev_m = meter;
}
}
+ //dump (_metrics, std::cerr;
}
void
recompute_meters (metrics);
}
-double
-TempoMap::pulse_at_beat (const Metrics& metrics, const double& beat) const
-{
- MeterSection* prev_ms = 0;
- double accumulated_beats = 0.0;
- double beats_to_m = 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) {
- beats_to_m = (m->pulse() - prev_ms->pulse()) * prev_ms->note_divisor();
- if (accumulated_beats + beats_to_m > beat) {
- break;
- }
- accumulated_beats += (m->pulse() - prev_ms->pulse()) * prev_ms->note_divisor();
- }
- prev_ms = m;
- }
-
- }
-
- return prev_ms->pulse() + ((beat - accumulated_beats) / prev_ms->note_divisor());
-}
-
-double
-TempoMap::beat_at_pulse (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 (m->pulse() > pulse) {
- break;
- }
- if (prev_ms) {
- accumulated_beats += (m->pulse() - prev_ms->pulse()) * prev_ms->note_divisor();
- }
- 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;
+
+ 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;
+ }
- 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;
}
+ double const ret = prev_m->pulse() + ((beat - prev_m->beat()) / prev_m->note_divisor());
+ return ret;
+}
+
+double
+TempoMap::pulse_at_beat (const double& beat) const
+{
Glib::Threads::RWLock::ReaderLock lm (lock);
- frameoffset_t const frame_off = frame_offset_at (_metrics, frame);
- double const beat = beat_at_pulse (_metrics, pulse_at_frame_locked (_metrics, frame + frame_off));
+ return pulse_at_beat_locked (_metrics, beat);
+}
- bbt = beats_to_bbt_locked (_metrics, beat);
+double
+TempoMap::beat_at_pulse_locked (const Metrics& metrics, const double& pulse) 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->pulse() > pulse) {
+ if ((pulse - prev_m->pulse()) * prev_m->note_divisor() < m->beat()) {
+ break;
+ }
+ }
+ prev_m = m;
+ }
+ }
+
+ double const beats_in_section = (pulse - prev_m->pulse()) * prev_m->note_divisor();
+
+ return beats_in_section + prev_m->beat();
}
double
-TempoMap::bbt_to_beats (Timecode::BBT_Time bbt)
+TempoMap::beat_at_pulse (const double& pulse) const
{
Glib::Threads::RWLock::ReaderLock lm (lock);
+ return beat_at_pulse_locked (_metrics, pulse);
+}
- return bbt_to_beats_locked (_metrics, bbt);
+double
+TempoMap::pulse_at_frame_locked (const Metrics& metrics, const framecnt_t& frame) const
+{
+ /* HOLD (at least) THE READER LOCK */
+ TempoSection* prev_t = 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_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;
+ }
+ }
+
+ /* treated as constant for this ts */
+ const double pulses_in_section = (frame - prev_t->frame()) / prev_t->frames_per_pulse (_frame_rate);
+
+ return pulses_in_section + prev_t->pulse();
+}
+
+double
+TempoMap::pulse_at_frame (const framecnt_t& frame) const
+{
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+ return pulse_at_frame_locked (_metrics, frame);
+}
+
+framecnt_t
+TempoMap::frame_at_pulse_locked (const Metrics& metrics, const double& pulse) const
+{
+ /* HOLD THE READER LOCK */
+
+ const TempoSection* prev_t = 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_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;
+}
+
+framecnt_t
+TempoMap::frame_at_pulse (const double& pulse) const
+{
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+ return frame_at_pulse_locked (_metrics, pulse);
+}
+
+double
+TempoMap::beat_at_frame_locked (const Metrics& metrics, const framecnt_t& frame) const
+{
+ const MeterSection& prev_m = meter_section_at_locked (metrics, frame);
+ const TempoSection& ts = tempo_section_at_locked (metrics, frame);
+ if (frame < prev_m.frame()) {
+ return 0.0;
+ }
+ return prev_m.beat() + (ts.pulse_at_frame (frame, _frame_rate) - prev_m.pulse()) * prev_m.note_divisor();
+}
+
+double
+TempoMap::beat_at_frame (const framecnt_t& frame) const
+{
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+ return beat_at_frame_locked (_metrics, frame);
+}
+
+framecnt_t
+TempoMap::frame_at_beat_locked (const Metrics& metrics, const double& beat) const
+{
+ const framecnt_t frame = frame_at_pulse_locked (metrics, pulse_at_beat_locked (metrics, beat));
+ return frame;
+}
+
+framecnt_t
+TempoMap::frame_at_beat (const double& beat) const
+{
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+ return frame_at_beat_locked (_metrics, beat);
}
double
{
/* CALLER HOLDS READ LOCK */
- double accumulated_beats = 0.0;
- double accumulated_bars = 0.0;
- MeterSection* prev_ms = 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) {
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)) {
- break;
- }
- if (prev_ms) {
- accumulated_beats += m->beat() - prev_ms->beat();
- accumulated_bars += bars_to_m;
+ 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;
+ }
}
- 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);
+ 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;
}
-Timecode::BBT_Time
-TempoMap::beats_to_bbt (double beats)
+double
+TempoMap::bbt_to_beats (const Timecode::BBT_Time& bbt)
{
Glib::Threads::RWLock::ReaderLock lm (lock);
-
- return beats_to_bbt_locked (_metrics, beats);
+ return bbt_to_beats_locked (_metrics, bbt);
}
Timecode::BBT_Time
-TempoMap::beats_to_bbt_locked (const Metrics& metrics, const double& beats) const
+TempoMap::beats_to_bbt_locked (const Metrics& metrics, const double& b) const
{
/* CALLER HOLDS READ LOCK */
-
- MeterSection* prev_ms = 0;
- uint32_t accumulated_bars = 0;
- double accumulated_beats = 0.0;
+ MeterSection* prev_m = 0;
+ 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_ms) {
- double const beats_to_m = m->beat() - prev_ms->beat();
- if (accumulated_beats + beats_to_m > beats) {
+ if (prev_m) {
+ if (m->beat() > 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;
}
- prev_ms = m;
+ prev_m = m;
}
}
- 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;
+ 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 -= BBT_Time::ticks_per_beat;
}
- if (ret.beats >= prev_ms->divisions_per_bar() + 1) {
+ if (ret.beats >= prev_m->divisions_per_bar() + 1) {
++ret.bars;
ret.beats = 1;
}
}
Timecode::BBT_Time
-TempoMap::pulse_to_bbt (double pulse)
+TempoMap::beats_to_bbt (const double& beats)
+{
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+ return beats_to_bbt_locked (_metrics, beats);
+}
+
+Timecode::BBT_Time
+TempoMap::pulse_to_bbt (const double& pulse)
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- MeterSection* prev_ms = 0;
- uint32_t accumulated_bars = 0;
- double accumulated_pulses = 0.0;
+ MeterSection* prev_m = 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 pulses_to_m = m->pulse() - prev_ms->pulse();
- if (accumulated_pulses + pulses_to_m > pulse) {
+ 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;
}
-
- /* 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();
}
- 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;
+
+ 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 -= BBT_Time::ticks_per_beat;
}
- if (ret.beats >= prev_ms->divisions_per_bar() + 1) {
+ if (ret.beats >= prev_m->divisions_per_bar() + 1) {
++ret.bars;
ret.beats = 1;
}
return ret;
}
-double
-TempoMap::beat_offset_at (const Metrics& metrics, const double& beat) const
+void
+TempoMap::bbt_time (framepos_t frame, BBT_Time& bbt)
{
- MeterSection* prev_m = 0;
- double beat_off = 0.0;
-
- for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
- MeterSection* m = 0;
- if ((m = dynamic_cast<MeterSection*> (*i)) != 0) {
- if (m->pulse() > beat) {
- break;
- }
-
- if (prev_m && m->position_lock_style() == AudioTime) {
- beat_off += ((m->pulse() - prev_m->pulse()) / prev_m->note_divisor()) - floor ((m->pulse() - prev_m->pulse()) / prev_m->note_divisor());
- }
- prev_m = m;
- }
+ 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);
- return beat_off;
+ bbt = beats_to_bbt_locked (_metrics, beat);
}
-frameoffset_t
-TempoMap::frame_offset_at (const Metrics& metrics, const framepos_t& frame) const
+framepos_t
+TempoMap::frame_time_locked (const Metrics& metrics, const BBT_Time& bbt) const
{
- frameoffset_t frame_off = 0;
-
- 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 (m->position_lock_style() == AudioTime) {
- frame_off += frame_at_pulse_locked (metrics, m->pulse()) - m->frame();
- }
- }
- }
+ /* HOLD THE READER LOCK */
- return frame_off;
+ const framepos_t ret = frame_at_beat_locked (metrics, bbt_to_beats_locked (metrics, bbt));
+ return ret;
}
-double
-TempoMap::beat_at_frame (framecnt_t frame) const
+framepos_t
+TempoMap::frame_time (const BBT_Time& bbt)
{
- Glib::Threads::RWLock::ReaderLock lm (lock);
- return beat_at_frame_locked (_metrics, frame);
-}
+ if (bbt.bars < 1) {
+ warning << string_compose (_("tempo map asked for frame time at bar < 1 (%1)\n"), bbt) << endmsg;
+ return 0;
+ }
-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);
+ if (bbt.beats < 1) {
+ throw std::logic_error ("beats are counted from one");
+ }
+ Glib::Threads::RWLock::ReaderLock lm (lock);
- return beat_at_pulse (metrics, pulse);
+ return frame_time_locked (_metrics, bbt);
}
-double
-TempoMap::pulse_at_frame_locked (const Metrics& metrics, const framecnt_t& frame) const
+bool
+TempoMap::check_solved (Metrics& metrics, bool by_frame)
{
- /* HOLD (at least) THE READER LOCK */
- TempoSection* prev_ts = 0;
- double accumulated_pulses = 0.0;
+ TempoSection* prev_t = 0;
for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
TempoSection* t;
if ((t = dynamic_cast<TempoSection*> (*i)) != 0) {
-
- 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;
+ if (!t->active()) {
+ continue;
}
+ if (prev_t) {
+ if ((by_frame && t->frame() < prev_t->frame()) || (!by_frame && t->pulse() < prev_t->pulse())) {
+ return false;
+ }
- accumulated_pulses = t->pulse();
- prev_ts = t;
- }
- }
-
- /* 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;
-}
-
-framecnt_t
-TempoMap::frame_at_beat (double beat) const
-{
- Glib::Threads::RWLock::ReaderLock lm (lock);
- 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 (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
-{
- /* HOLD THE READER LOCK */
-
- const TempoSection* prev_ts = 0;
- double accumulated_beats = 0.0;
-
- for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
- TempoSection* t;
+ if (t->frame() == prev_t->frame()) {
+ return false;
+ }
- if ((t = dynamic_cast<TempoSection*> (*i)) != 0) {
- if (prev_ts && t->pulse() > pulse) {
- return prev_ts->frame_at_pulse (pulse, _frame_rate);
+ /* precision check ensures pulses and frames align.*/
+ if (t->frame() != prev_t->frame_at_pulse (t->pulse(), _frame_rate)) {
+ return false;
+ }
}
-
- accumulated_beats = t->pulse();
- prev_ts = t;
+ prev_t = t;
}
}
- /* must be treated as constant, irrespective of _type */
- double const pulses_in_section = pulse - accumulated_beats;
- double const dtime = pulses_in_section * prev_ts->frames_per_pulse (_frame_rate);
-
- framecnt_t const ret = (framecnt_t) floor (dtime) + prev_ts->frame();
-
- return ret;
-}
-
-framepos_t
-TempoMap::frame_time (const BBT_Time& bbt)
-{
- if (bbt.bars < 1) {
- warning << string_compose (_("tempo map asked for frame time at bar < 1 (%1)\n"), bbt) << endmsg;
- return 0;
- }
-
- if (bbt.beats < 1) {
- throw std::logic_error ("beats are counted from one");
- }
- Glib::Threads::RWLock::ReaderLock lm (lock);
- double 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 (metrics, bbt_to_beats_locked (metrics, bbt)));
-
- return ret;
+ return true;
}
bool
-TempoMap::check_solved (Metrics& metrics, bool by_frame)
+TempoMap::set_active_tempos (const Metrics& metrics, const framepos_t& frame)
{
- TempoSection* prev_ts = 0;
-
for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
TempoSection* t;
if ((t = dynamic_cast<TempoSection*> (*i)) != 0) {
- if (prev_ts) {
- if ((by_frame && t->frame() < prev_ts->frame()) || (!by_frame && t->pulse() < prev_ts->pulse())) {
- return false;
- }
- if (by_frame && t->frame() != prev_ts->frame_at_tempo (t->pulses_per_minute(), t->pulse(), _frame_rate)) {
- 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;
- return false;
- }
- */
+ 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;
}
- prev_ts = t;
}
}
-
return true;
}
bool
-TempoMap::solve_map (Metrics& imaginary, TempoSection* section, const Tempo& bpm, const framepos_t& frame)
+TempoMap::solve_map (Metrics& imaginary, TempoSection* section, const framepos_t& frame)
{
- TempoSection* prev_ts = 0;
+ 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) {
+ return false;
+ }
+ section->set_active (true);
section->set_frame (frame);
+
for (Metrics::iterator i = imaginary.begin(); i != imaginary.end(); ++i) {
TempoSection* t;
if ((t = dynamic_cast<TempoSection*> (*i)) != 0) {
- if (prev_ts) {
+
+ if (!t->active()) {
+ 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) {
- section_prev->set_c_func (section_prev->compute_c_func_pulse (section->pulses_per_minute(), section->pulse(), _frame_rate));
+ section_prev->set_c_func (section_prev->compute_c_func_frame (section->pulses_per_minute(), frame, _frame_rate));
section->set_pulse (section_prev->pulse_at_frame (frame, _frame_rate));
}
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 double& pulse)
+{
+ TempoSection* prev_t = 0;
+ TempoSection* section_prev = 0;
+
+ section->set_pulse (pulse);
+
+ for (Metrics::iterator i = imaginary.begin(); i != imaginary.end(); ++i) {
+ TempoSection* t;
+ if ((t = dynamic_cast<TempoSection*> (*i)) != 0) {
+ if (!t->active()) {
+ continue;
+ }
+ if (!t->movable()) {
+ t->set_pulse (0.0);
+ prev_t = t;
+ continue;
+ }
+ if (prev_t) {
+ if (t == section) {
+ section_prev = prev_t;
+ continue;
+ }
+ if (t->position_lock_style() == MusicTime) {
+ 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_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_t = t;
+ }
+ }
+ if (section_prev) {
+ section_prev->set_c_func (section_prev->compute_c_func_pulse (section->pulses_per_minute(), pulse, _frame_rate));
+ section->set_frame (section_prev->frame_at_pulse (pulse, _frame_rate));
+ }
+
+ 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;
+ }
+ MetricSectionSorter cmp;
+ imaginary.sort (cmp);
+ 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;
+ }
+#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::solve_map (Metrics& imaginary, TempoSection* section, const Tempo& bpm, const double& beat)
+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)
{
- MetricSectionSorter cmp;
- MetricSectionFrameSorter fcmp;
- TempoSection* prev_ts = 0;
- TempoSection* section_prev = 0;
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+ Metrics future_map;
+ framepos_t ret = 0;
+ TempoSection* new_section = copy_metrics_and_point (future_map, section);
- section->set_pulse (beat);
+ const double beat = bbt_to_beats_locked (future_map, bbt);
- for (Metrics::iterator i = imaginary.begin(); i != imaginary.end(); ++i) {
- TempoSection* t;
- if ((t = dynamic_cast<TempoSection*> (*i)) != 0) {
- if (prev_ts) {
- if (t == section) {
- section_prev = prev_ts;
- 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));
- } 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_ts = t;
- }
+ 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);
}
- if (section_prev) {
- section_prev->set_c_func (section_prev->compute_c_func_pulse (section->pulses_per_minute(), section->pulse(), _frame_rate));
- section->set_frame (section_prev->frame_at_pulse (section->pulse(), _frame_rate));
+
+ Metrics::const_iterator d = future_map.begin();
+ while (d != future_map.end()) {
+ delete (*d);
+ ++d;
}
+ return ret;
+}
- if (section->position_lock_style() == AudioTime) {
- /* we're setting the beat */
- section->set_position_lock_style (MusicTime);
- recompute_tempos (imaginary);
- section->set_position_lock_style (AudioTime);
+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 {
- recompute_tempos (imaginary);
- }
- if (check_solved (imaginary, false)) {
- recompute_meters (imaginary);
- return true;
+ ret = pulse_at_frame_locked (_metrics, frame);
}
- imaginary.sort (cmp);
- if (section->position_lock_style() == AudioTime) {
- /* we're setting the beat */
- 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);
+ }
}
- imaginary.sort (fcmp);
- if (section->position_lock_style() == AudioTime) {
- /* we're setting the beat */
- 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;
}
- if (check_solved (imaginary, false)) {
- recompute_meters (imaginary);
- return true;
+ MetricPositionChanged (); // Emit Signal
+}
+
+void
+TempoMap::gui_move_tempo_beat (TempoSection* ts, 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, pulse_at_beat_locked (future_map, beat))) {
+ solve_map (_metrics, ts, pulse_at_beat_locked (_metrics, beat));
+ }
}
- //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& beat)
+TempoMap::gui_move_meter (MeterSection* ms, const framepos_t& frame)
{
- MeterSection* prev_ms = 0;
+ {
+ Glib::Threads::RWLock::WriterLock lm (lock);
+ solve_map (_metrics, ms, frame);
+ }
- pair<double, BBT_Time> b_bbt = make_pair (beat, beats_to_bbt_locked (imaginary, beat));
- section->set_pulse (b_bbt);
- MetricSectionSorter cmp;
- imaginary.sort (cmp);
+ MetricPositionChanged (); // Emit Signal
+}
- for (Metrics::iterator i = imaginary.begin(); i != imaginary.end(); ++i) {
- MeterSection* m;
- if ((m = dynamic_cast<MeterSection*> (*i)) != 0) {
- if (prev_ms) {
- if (m == section){
- section->set_frame (frame_at_pulse_locked (imaginary, pulse_at_beat (imaginary, beat)));
- prev_ms = section;
- continue;
- }
- if (m->position_lock_style() == MusicTime) {
- m->set_frame (frame_at_pulse_locked (imaginary, m->pulse()));
- } else {
- pair<double, BBT_Time> b_bbt = make_pair (pulse_at_frame_locked (imaginary, m->frame()), BBT_Time (1, 1, 0));
- b_bbt.second = beats_to_bbt_locked (imaginary, beat_at_pulse (imaginary, b_bbt.first));
- m->set_pulse (b_bbt);
- }
- }
- prev_ms = m;
- }
+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));
}
- if (section->position_lock_style() == AudioTime) {
- /* we're setting the beat */
- section->set_position_lock_style (MusicTime);
- recompute_meters (imaginary);
- section->set_position_lock_style (AudioTime);
- } else {
- recompute_meters (imaginary);
- }
+ MetricPositionChanged (); // Emit Signal
}
-void
-TempoMap::solve_map (Metrics& imaginary, MeterSection* section, const Meter& mt, const framepos_t& frame)
+bool
+TempoMap::gui_change_tempo (TempoSection* ts, const Tempo& bpm)
{
- MeterSection* prev_ms = 0;
- section->set_frame (frame);
+ 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) {
- if (m == section){
- /*
- here we define the beat 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 beats to keep us sane)
- */
- double const pulse_at_f = ceil (pulse_at_frame_locked (imaginary, m->frame()));
- pair<double, BBT_Time> b_bbt = make_pair (pulse_at_f, beats_to_bbt_locked (imaginary, beat_at_pulse (imaginary, pulse_at_f)));
- m->set_pulse (b_bbt);
- prev_ms = m;
- continue;
- }
- if (m->position_lock_style() == MusicTime) {
- m->set_frame (frame_at_pulse_locked (imaginary, m->pulse()));
- } else {
- double const pulse_at_f = ceil (pulse_at_frame_locked (imaginary, frame));
- pair<double, BBT_Time> b_bbt = make_pair (pulse_at_f, beats_to_bbt_locked (imaginary, beat_at_pulse (imaginary, pulse_at_f)));
- m->set_pulse (b_bbt);
- }
- }
- 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;
}
+ 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 (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 (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);
- uint32_t const upper_beat = (uint32_t) ceil (beat_at_frame_locked (_metrics, upper));
- uint32_t cnt = floor (beat_at_frame_locked (_metrics, lower));
-
- 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));
+ 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 && 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->frame() > frame) {
+ if (!t->active()) {
+ continue;
+ }
+ if (prev && t->frame() > frame) {
break;
}
do that stuff based on the beat_at_frame and frame_at_beat api
*/
double
-TempoMap::frames_per_beat_at (framepos_t frame, framecnt_t sr) const
+TempoMap::frames_per_beat_at (const framepos_t& frame, const framecnt_t& sr) const
{
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;
TempoSection* t;
if ((t = dynamic_cast<TempoSection*> (*i)) != 0) {
-
+ if (!t->active()) {
+ continue;
+ }
if ((*i)->frame() > frame) {
ts_after = t;
break;
}
const Tempo
-TempoMap::tempo_at (framepos_t frame) const
+TempoMap::tempo_at (const framepos_t& frame) const
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- frameoffset_t const frame_off = frame + frame_offset_at (_metrics, frame);
- TempoSection* prev_ts = 0;
+ return tempo_at_locked (_metrics, frame);
+}
+
+const Tempo
+TempoMap::tempo_at_locked (const Metrics& metrics, const framepos_t& frame) const
+{
+ TempoSection* prev_t = 0;
Metrics::const_iterator i;
for (i = _metrics.begin(); i != _metrics.end(); ++i) {
TempoSection* t;
if ((t = dynamic_cast<TempoSection*> (*i)) != 0) {
- if ((prev_ts) && t->frame() > frame) {
+ if (!t->active()) {
+ continue;
+ }
+ 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;
}
TempoMap::meter_section_at (framepos_t frame) const
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- return meter_section_at_locked (frame);
+ return meter_section_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) {
- MeterSection* t;
+ for (i = metrics.begin(); i != metrics.end(); ++i) {
+ MeterSection* m;
- if ((t = dynamic_cast<MeterSection*> (*i)) != 0) {
+ if ((m = dynamic_cast<MeterSection*> (*i)) != 0) {
- if ((*i)->frame() > frame_off) {
+ if (prev && (*i)->frame() > frame) {
break;
}
- prev = t;
+ prev = m;
}
}
const Meter&
TempoMap::meter_at (framepos_t frame) const
{
- framepos_t const frame_off = frame + frame_offset_at (_metrics, frame);
- TempoMetric m (metric_at (frame_off));
-
+ TempoMetric m (metric_at (frame));
return m.meter();
}
+const MeterSection&
+TempoMap::meter_section_at (const double& beat) const
+{
+ MeterSection* prev_m = 0;
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+
+ 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;
+}
+
+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* prev_ms;
- TempoSection* prev_ts;
- if ((prev_ms = dynamic_cast<MeterSection*>(*i)) != 0) {
- if (prev_ms->pulse() < 0.0) {
- /*XX we cannot possibly make this work??. */
- pair<double, BBT_Time> start = make_pair (((prev_ms->bbt().bars - 1) * 4.0) + (prev_ms->bbt().beats - 1) + (prev_ms->bbt().ticks / BBT_Time::ticks_per_beat), prev_ms->bbt());
- prev_ms->set_pulse (start);
- }
- } else if ((prev_ts = dynamic_cast<TempoSection*>(*i)) != 0) {
- if (prev_ts->pulse() < 0.0) {
- double const start = ((prev_ts->legacy_bbt().bars - 1) * 4.0) + (prev_ts->legacy_bbt().beats - 1) + (prev_ts->legacy_bbt().ticks / BBT_Time::ticks_per_beat);
- prev_ts->set_pulse (start);
+ /* check for legacy sessions where bbt was the base musical unit for tempo */
+ for (Metrics::const_iterator i = _metrics.begin(); i != _metrics.end(); ++i) {
+ TempoSection* t;
+ if ((t = dynamic_cast<TempoSection*> (*i)) != 0) {
+ if (t->legacy_bbt().bars != 0) {
+ fix_legacy_session();
+ break;
}
+ 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;
}
}
}
void
-TempoMap::dump (Metrics& metrics, std::ostream& o) const
+TempoMap::dump (const Metrics& metrics, std::ostream& o) const
{
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? "
- << t->movable() << ')' << endl;
- if (prev_ts) {
- o << "current : " << t->beats_per_minute() << " | " << t->pulse() << " | " << t->frame() << std::endl;
- 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->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;
- o << "------" << std::endl;
+ 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_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_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()
- << " (movable? " << m->movable() << ')' << endl;
+ << " pulse: " << m->pulse() << " beat : " << m->beat() << " pos lock: " << enum_2_string (m->position_lock_style()) << " (movable? " << m->movable() << ')' << endl;
}
- prev_ts = t;
}
+ o << "------" << std::endl;
}
int
if (prev) {
if (ts){
if ((t = dynamic_cast<TempoSection*>(prev)) != 0) {
+ if (!t->active()) {
+ continue;
+ }
ts->set_pulse (t->pulse());
}
if ((m = dynamic_cast<MeterSection*>(prev)) != 0) {
}
if (ms) {
if ((m = dynamic_cast<MeterSection*>(prev)) != 0) {
- pair<double, BBT_Time> start = make_pair (m->pulse(), m->bbt());
- ms->set_pulse (start);
+ pair<double, BBT_Time> start = make_pair (m->beat(), m->bbt());
+ ms->set_beat (start);
+ ms->set_pulse (m->pulse());
}
if ((t = dynamic_cast<TempoSection*>(prev)) != 0) {
- pair<double, BBT_Time> start = make_pair (t->pulse(), beats_to_bbt_locked (_metrics, t->pulse()));
- ms->set_pulse (start);
+ if (!t->active()) {
+ continue;
+ }
+ const double beat = beat_at_pulse_locked (_metrics, t->pulse());
+ pair<double, BBT_Time> start = make_pair (beat, beats_to_bbt_locked (_metrics, beat));
+ ms->set_beat (start);
+ ms->set_pulse (t->pulse());
}
ms->set_frame (prev->frame());
}
// cerr << bbt << endl;
if ((t = dynamic_cast<TempoSection*>(*i)) != 0) {
+ if (!t->active()) {
+ continue;
+ }
t->set_pulse (pulse_at_frame_locked (_metrics, m->frame()));
tempo = t;
// cerr << "NEW TEMPO, frame = " << (*i)->frame() << " beat = " << (*i)->pulse() <<endl;
bbt.beats = 1;
}
}
- pair<double, BBT_Time> start = make_pair (pulse_at_frame_locked (_metrics, m->frame()), bbt);
- m->set_pulse (start);
+ pair<double, BBT_Time> start = make_pair (beat_at_frame_locked (_metrics, m->frame()), bbt);
+ m->set_beat (start);
+ m->set_pulse (pulse_at_frame_locked (_metrics, m->frame()));
meter = m;
// cerr << "NEW METER, frame = " << (*i)->frame() << " beat = " << (*i)->pulse() <<endl;
} else {
Evoral::Beats
TempoMap::framewalk_to_beats (framepos_t pos, framecnt_t distance) const
{
- return Evoral::Beats(beat_at_frame (pos + distance) - beat_at_frame (pos));
+ return Evoral::Beats (beat_at_frame (pos + distance) - beat_at_frame (pos));
}
struct bbtcmp {
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