/* _default tempo is 4/4 qtr=120 */
Meter TempoMap::_default_meter (4.0, 4.0);
-Tempo TempoMap::_default_tempo (120.0);
+Tempo TempoMap::_default_tempo (120.0, 4.0, 120.0);
+
+framepos_t
+MetricSection::frame_at_minute (const double& time) const
+{
+ return (framepos_t) floor ((time * 60.0 * _sample_rate) + 0.5);
+}
+
+double
+MetricSection::minute_at_frame (const framepos_t& frame) const
+{
+ return (frame / (double) _sample_rate) / 60.0;
+}
/***********************************************************************/
The return value IS NOT interpretable in terms of "beats".
*/
- return (60.0 * sr) / (tempo.beats_per_minute() * (_note_type/tempo.note_type()));
+ return (60.0 * sr) / (tempo.note_types_per_minute() * (_note_type / tempo.note_type()));
}
double
const string TempoSection::xml_state_node_name = "Tempo";
-TempoSection::TempoSection (const XMLNode& node)
- : MetricSection (0.0, 0, MusicTime, true)
+TempoSection::TempoSection (const XMLNode& node, framecnt_t sample_rate)
+ : MetricSection (0.0, 0, MusicTime, true, sample_rate)
, Tempo (TempoMap::default_tempo())
- , _c_func (0.0)
+ , _c (0.0)
, _active (true)
, _locked_to_meter (false)
+ , _legacy_end (false)
{
XMLProperty const * prop;
LocaleGuard lg;
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;
+ throw failed_constructor();
} else {
- set_frame (frame);
+ set_minute (minute_at_frame (frame));
}
}
- if ((prop = node.property ("beats-per-minute")) == 0) {
- error << _("TempoSection XML node has no \"beats-per-minute\" property") << endmsg;
- throw failed_constructor();
- }
-
- if (sscanf (prop->value().c_str(), "%lf", &_beats_per_minute) != 1 || _beats_per_minute < 0.0) {
- error << _("TempoSection XML node has an illegal \"beats_per_minute\" value") << endmsg;
- throw failed_constructor();
+ /* XX replace old beats-per-minute name with note-types-per-minute */
+ if ((prop = node.property ("beats-per-minute")) != 0) {
+ if (sscanf (prop->value().c_str(), "%lf", &_note_types_per_minute) != 1 || _note_types_per_minute < 0.0) {
+ error << _("TempoSection XML node has an illegal \"beats-per-minute\" value") << endmsg;
+ throw failed_constructor();
+ }
}
if ((prop = node.property ("note-type")) == 0) {
}
}
+ /* XX replace old end-beats-per-minute name with note-types-per-minute */
+ if ((prop = node.property ("end-beats-per-minute")) != 0) {
+ if (sscanf (prop->value().c_str(), "%lf", &_end_note_types_per_minute) != 1 || _end_note_types_per_minute < 0.0) {
+ info << _("TempoSection XML node has an illegal \"in-beats-per-minute\" value") << endmsg;
+ //throw failed_constructor();
+ _end_note_types_per_minute = _note_types_per_minute;
+ _legacy_end = true;
+ }
+ } else {
+ _legacy_end = true;
+ }
+
+ if ((prop = node.property ("tempo-type")) != 0) {
+ TempoSection::Type old_type;
+
+ old_type = Type (string_2_enum (prop->value(), old_type));
+ if (old_type == TempoSection::Constant) {
+ _end_note_types_per_minute = _note_types_per_minute;
+ }
+ }
+
if ((prop = node.property ("movable")) == 0) {
error << _("TempoSection XML node has no \"movable\" property") << endmsg;
throw failed_constructor();
}
- set_movable (string_is_affirmative (prop->value()));
+ set_initial (!string_is_affirmative (prop->value()));
if ((prop = node.property ("active")) == 0) {
warning << _("TempoSection XML node has no \"active\" property") << endmsg;
set_active (string_is_affirmative (prop->value()));
}
- if ((prop = node.property ("tempo-type")) == 0) {
- _type = Constant;
- } else {
- _type = Type (string_2_enum (prop->value(), _type));
- }
-
if ((prop = node.property ("lock-style")) == 0) {
- if (movable()) {
+ if (!initial()) {
set_position_lock_style (MusicTime);
} else {
set_position_lock_style (AudioTime);
}
if ((prop = node.property ("locked-to-meter")) == 0) {
- set_locked_to_meter (false);
+ if (initial()) {
+ set_locked_to_meter (true);
+ } else {
+ set_locked_to_meter (false);
+ }
} else {
set_locked_to_meter (string_is_affirmative (prop->value()));
}
+
+ /* 5.5 marked initial tempo as not locked to meter. this should always be true anyway */
+ if (initial()) {
+ set_locked_to_meter (true);
+ }
}
XMLNode&
root->add_property ("pulse", buf);
snprintf (buf, sizeof (buf), "%li", frame());
root->add_property ("frame", buf);
- snprintf (buf, sizeof (buf), "%lf", _beats_per_minute);
+ snprintf (buf, sizeof (buf), "%lf", _note_types_per_minute);
root->add_property ("beats-per-minute", buf);
snprintf (buf, sizeof (buf), "%lf", _note_type);
root->add_property ("note-type", buf);
- snprintf (buf, sizeof (buf), "%s", movable()?"yes":"no");
+ snprintf (buf, sizeof (buf), "%lf", _end_note_types_per_minute);
+ root->add_property ("end-beats-per-minute", buf);
+ snprintf (buf, sizeof (buf), "%s", !initial()?"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()));
root->add_property ("locked-to-meter", locked_to_meter()?"yes":"no");
return *root;
}
-void
-TempoSection::set_type (Type type)
+/** returns the Tempo at the session-relative minute.
+*/
+Tempo
+TempoSection::tempo_at_minute (const double& m) const
{
- _type = type;
+ const bool constant = type() == Constant || _c == 0.0 || (initial() && m < minute());
+ if (constant) {
+ return Tempo (note_types_per_minute(), note_type());
+ }
+
+ return Tempo (_tempo_at_time (m - minute()), _note_type, _end_note_types_per_minute);
}
-/** returns the tempo in whole pulses per minute at the zero-based (relative to session) frame.
+/** returns the session relative minute where the supplied tempo in note types per minute occurs.
+ * @param ntpm the tempo in mote types per minute used to calculate the returned minute
+ * @param p the pulse used to calculate the returned minute for constant tempi
+ * @return the minute at the supplied tempo
+ *
+ * note that the note_type is currently ignored in this function. see below.
+ *
+*/
+
+/** if tempoA (120, 4.0) precedes tempoB (120, 8.0),
+ * there should be no ramp between the two even if we are ramped.
+ * in other words a ramp should only place a curve on note_types_per_minute.
+ * we should be able to use Tempo note type here, but the above
+ * complicates things a bit.
*/
double
-TempoSection::tempo_at_frame (const framepos_t& f, const framecnt_t& frame_rate) const
+TempoSection::minute_at_ntpm (const double& ntpm, const double& p) const
{
-
- if (_type == Constant || _c_func == 0.0) {
- return pulses_per_minute();
+ const bool constant = type() == Constant || _c == 0.0 || (initial() && p < pulse());
+ if (constant) {
+ return ((p - pulse()) / pulses_per_minute()) + minute();
}
- return pulse_tempo_at_time (frame_to_minute (f - frame(), frame_rate));
+ return _time_at_tempo (ntpm) + minute();
}
-/** returns the zero-based frame (relative to session)
- where the tempo in whole pulses per minute occurs in this section.
- pulse p is only used for constant tempos.
- note that the tempo map may have multiple such values.
-*/
-framepos_t
-TempoSection::frame_at_tempo (const double& ppm, const double& p, const framecnt_t& frame_rate) const
+/** returns the Tempo at the supplied whole-note pulse.
+ */
+Tempo
+TempoSection::tempo_at_pulse (const double& p) const
{
- if (_type == Constant || _c_func == 0.0) {
- return ((p - pulse()) * frames_per_pulse (frame_rate)) + frame();
+ const bool constant = type() == Constant || _c == 0.0 || (initial() && p < pulse());
+
+ if (constant) {
+ return Tempo (note_types_per_minute(), note_type());
}
- return minute_to_frame (time_at_pulse_tempo (ppm), frame_rate) + frame();
+ return Tempo (_tempo_at_pulse (p - pulse()), _note_type, _end_note_types_per_minute);
}
-/** returns the tempo in pulses per minute at the zero-based (relative to session) beat.
+
+/** returns the whole-note pulse where a tempo in note types per minute occurs.
+ * constant tempi require minute m.
+ * @param ntpm the note types per minute value used to calculate the returned pulse
+ * @param m the minute used to calculate the returned pulse if the tempo is constant
+ * @return the whole-note pulse at the supplied tempo
+ *
+ * note that note_type is currently ignored in this function. see minute_at_tempo().
+ *
+ * for constant tempi, this is anaologous to pulse_at_minute().
*/
double
-TempoSection::tempo_at_pulse (const double& p) const
+TempoSection::pulse_at_ntpm (const double& ntpm, const double& m) const
{
-
- if (_type == Constant || _c_func == 0.0) {
- return pulses_per_minute();
+ const bool constant = type() == Constant || _c == 0.0 || (initial() && m < minute());
+ if (constant) {
+ return ((m - minute()) * pulses_per_minute()) + pulse();
}
- double const ppm = pulse_tempo_at_pulse (p - pulse());
- return ppm;
+
+ return _pulse_at_tempo (ntpm) + pulse();
}
-/** returns the zero-based beat (relative to session)
- where the tempo in whole pulses per minute occurs given frame f. frame f is only used for constant tempos.
- note that the session tempo map may have multiple beats at a given tempo.
+/** returns the whole-note pulse at the supplied session-relative minute.
*/
double
-TempoSection::pulse_at_tempo (const double& ppm, const framepos_t& f, const framecnt_t& frame_rate) const
+TempoSection::pulse_at_minute (const double& m) const
{
- if (_type == Constant || _c_func == 0.0) {
- double const pulses = ((f - frame()) / frames_per_pulse (frame_rate)) + pulse();
- return pulses;
+ const bool constant = type() == Constant || _c == 0.0 || (initial() && m < minute());
+ if (constant) {
+ return ((m - minute()) * pulses_per_minute()) + pulse();
}
- return pulse_at_pulse_tempo (ppm) + pulse();
+
+ return _pulse_at_time (m - minute()) + pulse();
}
-/** returns the zero-based pulse (relative to session origin)
- where the zero-based frame (relative to session)
- lies.
+/** returns the session-relative minute at the supplied whole-note pulse.
*/
double
-TempoSection::pulse_at_frame (const framepos_t& f, const framecnt_t& frame_rate) const
+TempoSection::minute_at_pulse (const double& p) const
{
- if (_type == Constant || _c_func == 0.0) {
- return ((f - frame()) / frames_per_pulse (frame_rate)) + pulse();
+ const bool constant = type() == Constant || _c == 0.0 || (initial() && p < pulse());
+ if (constant) {
+ return ((p - pulse()) / pulses_per_minute()) + minute();
}
- return pulse_at_time (frame_to_minute (f - frame(), frame_rate)) + pulse();
+ return _time_at_pulse (p - pulse()) + minute();
}
-/** returns the zero-based frame (relative to session start frame)
- where the zero-based pulse (relative to session start)
- falls.
+/** returns thw whole-note pulse at session frame position f.
+ * @param f the frame position.
+ * @return the position in whole-note pulses corresponding to f
+ *
+ * for use with musical units whose granularity is coarser than frames (e.g. ticks)
*/
+double
+TempoSection::pulse_at_frame (const framepos_t& f) const
+{
+ const bool constant = type() == Constant || _c == 0.0 || (initial() && f < frame());
+ if (constant) {
+ return (minute_at_frame (f - frame()) * pulses_per_minute()) + pulse();
+ }
+
+ return _pulse_at_time (minute_at_frame (f - frame())) + pulse();
+}
framepos_t
-TempoSection::frame_at_pulse (const double& p, const framecnt_t& frame_rate) const
+TempoSection::frame_at_pulse (const double& p) const
{
- if (_type == Constant || _c_func == 0.0) {
- return (framepos_t) floor ((p - pulse()) * frames_per_pulse (frame_rate)) + frame();
+ const bool constant = type() == Constant || _c == 0.0 || (initial() && p < pulse());
+ if (constant) {
+ return frame_at_minute (((p - pulse()) / pulses_per_minute()) + minute());
}
- return minute_to_frame (time_at_pulse (p - pulse()), frame_rate) + frame();
+ return frame_at_minute (_time_at_pulse (p - pulse()) + minute());
}
/*
*/
-/*
- compute this ramp's function constant using the end tempo (in whole pulses per minute)
- and duration (pulses into global start) of some later tempo section.
+/** compute this ramp's function constant from some tempo-pulse point
+ * @param end_npm end tempo (in note types per minute)
+ * @param end_pulse duration (pulses into global start) of some other position.
+ * @return the calculated function constant
*/
double
-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() * (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 (const double& end_bpm, const framepos_t& end_frame, const framecnt_t& frame_rate) const
+TempoSection::compute_c_pulse (const double& end_npm, const double& end_pulse) const
{
- return c_func (end_bpm, frame_to_minute (end_frame - frame(), frame_rate));
-}
+ if (note_types_per_minute() == end_npm || type() == Constant) {
+ return 0.0;
+ }
-framepos_t
-TempoSection::minute_to_frame (const double& time, const framecnt_t& frame_rate) const
-{
- return (framepos_t) floor ((time * 60.0 * frame_rate) + 0.5);
+ double const log_tempo_ratio = log (end_npm / note_types_per_minute());
+ return (note_types_per_minute() * expm1 (log_tempo_ratio)) / ((end_pulse - pulse()) * _note_type);
}
+/** compute the function constant from some tempo-time point.
+ * @param end_npm tempo (note types/min.)
+ * @param end_minute distance (in minutes) from session origin
+ * @return the calculated function constant
+*/
double
-TempoSection::frame_to_minute (const framepos_t& frame, const framecnt_t& frame_rate) const
+TempoSection::compute_c_minute (const double& end_npm, const double& end_minute) const
{
- return (frame / (double) frame_rate) / 60.0;
+ if (note_types_per_minute() == end_npm || type() == Constant) {
+ return 0.0;
+ }
+
+ return c_func (end_npm, end_minute - minute());
}
/* position function */
double
-TempoSection::a_func (double end_ppm, double c_func) const
+TempoSection::a_func (double end_npm, double c) const
{
- return log (end_ppm / pulses_per_minute()) / c_func;
+ return log (end_npm / note_types_per_minute()) / c;
}
/*function constant*/
double
-TempoSection::c_func (double end_ppm, double end_time) const
+TempoSection::c_func (double end_npm, double end_time) const
{
- return log (end_ppm / pulses_per_minute()) / end_time;
+ return log (end_npm / note_types_per_minute()) / end_time;
}
-/* tempo in ppm at time in minutes */
+/* tempo in note types per minute at time in minutes */
double
-TempoSection::pulse_tempo_at_time (const double& time) const
+TempoSection::_tempo_at_time (const double& time) const
{
- return exp (_c_func * time) * pulses_per_minute();
+ return exp (_c * time) * note_types_per_minute();
}
-/* time in minutes at tempo in ppm */
+/* time in minutes at tempo in note types per minute */
double
-TempoSection::time_at_pulse_tempo (const double& pulse_tempo) const
+TempoSection::_time_at_tempo (const double& npm) const
{
- return log (pulse_tempo / pulses_per_minute()) / _c_func;
+ return log (npm / note_types_per_minute()) / _c;
}
-/* tick at tempo in ppm */
+/* pulse at tempo in note types per minute */
double
-TempoSection::pulse_at_pulse_tempo (const double& pulse_tempo) const
+TempoSection::_pulse_at_tempo (const double& npm) const
{
- return (pulse_tempo - pulses_per_minute()) / _c_func;
+ return ((npm - note_types_per_minute()) / _c) / _note_type;
}
-/* tempo in ppm at tick */
+/* tempo in note types per minute at pulse */
double
-TempoSection::pulse_tempo_at_pulse (const double& pulse) const
+TempoSection::_tempo_at_pulse (const double& pulse) const
{
- return (pulse * _c_func) + pulses_per_minute();
+ return (pulse * _note_type * _c) + note_types_per_minute();
}
/* pulse at time in minutes */
double
-TempoSection::pulse_at_time (const double& time) const
+TempoSection::_pulse_at_time (const double& time) const
{
- return expm1 (_c_func * time) * (pulses_per_minute() / _c_func);
+ return (expm1 (_c * time) * (note_types_per_minute() / _c)) / _note_type;
}
/* time in minutes at pulse */
double
-TempoSection::time_at_pulse (const double& pulse) const
+TempoSection::_time_at_pulse (const double& pulse) const
{
- return log1p ((_c_func * pulse) / pulses_per_minute()) / _c_func;
+ return log1p ((_c * pulse * _note_type) / note_types_per_minute()) / _c;
}
/***********************************************************************/
const string MeterSection::xml_state_node_name = "Meter";
-MeterSection::MeterSection (const XMLNode& node)
- : MetricSection (0.0, 0, MusicTime, false), Meter (TempoMap::default_meter())
+MeterSection::MeterSection (const XMLNode& node, const framecnt_t sample_rate)
+ : MetricSection (0.0, 0, MusicTime, false, sample_rate), Meter (TempoMap::default_meter())
{
XMLProperty const * prop;
LocaleGuard lg;
if ((prop = node.property ("frame")) != 0) {
if (sscanf (prop->value().c_str(), "%li", &frame) != 1) {
error << _("MeterSection XML node has an illegal \"frame\" value") << endmsg;
+ throw failed_constructor();
} else {
- set_frame (frame);
+ set_minute (minute_at_frame (frame));
}
}
throw failed_constructor();
}
- set_movable (string_is_affirmative (prop->value()));
+ set_initial (!string_is_affirmative (prop->value()));
if ((prop = node.property ("lock-style")) == 0) {
warning << _("MeterSection XML node has no \"lock-style\" property") << endmsg;
- if (movable()) {
+ if (!initial()) {
set_position_lock_style (MusicTime);
} else {
set_position_lock_style (AudioTime);
root->add_property ("lock-style", enum_2_string (position_lock_style()));
snprintf (buf, sizeof (buf), "%lf", _divisions_per_bar);
root->add_property ("divisions-per-bar", buf);
- snprintf (buf, sizeof (buf), "%s", movable()?"yes":"no");
+ snprintf (buf, sizeof (buf), "%s", !initial()?"yes":"no");
root->add_property ("movable", buf);
return *root;
/*
Tempo Map Overview
- The Shaggs - Things I Wonder
- https://www.youtube.com/watch?v=9wQK6zMJOoQ
-
- Tempo is the rate of the musical pulse.
- Meters divide the pulses into measures and beats.
-
- TempoSections - provide pulses in the form of beats_per_minute() and note_type() where note_type is the division of a whole pulse,
- and beats_per_minute is the number of note_types in one minute (unlike what its name suggests).
- Note that Tempo::beats_per_minute() has nothing to do with musical beats. It has been left that way because
- a shorter one hasn't been found yet (pulse_divisions_per_minute()?).
+ Tempo determines the rate of musical pulse determined by its components
+ note types per minute - the rate per minute of the whole note divisor _note_type
+ note type - the division of whole notes (pulses) which occur at the rate of note types per minute.
+ Meter divides the musical pulse into measures and beats according to its components
+ divisions_per_bar
+ note_divisor
- MeterSecions - divide pulses into measures (via divisions_per_bar) and beats (via note_divisor).
+ TempoSection - translates between time, musical pulse and tempo.
+ has a musical location in whole notes (pulses).
+ has a time location in minutes.
+ Note that 'beats' in Tempo::note_types_per_minute() are in fact note types per minute.
+ (In the rest of tempo map,'beat' usually refers to accumulated BBT beats (pulse and meter based).
- 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.
- TempoSections and MeterSections may be locked to either audio or music (position lock style).
- The lock style determines the 'true' position of the section wich is used to calculate the other postion parameters of the section.
+ MeterSection - translates between BBT, meter-based beat and musical pulse.
+ has a musical location in whole notes (pulses)
+ has a musical location in meter-based beats
+ has a musical location in BBT time
+ has a time location expressed in minutes.
- 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.
+ TempoSection and MeterSection may be locked to either audio or music (position lock style).
+ The lock style determines the location type to be kept as a reference when location is recalculated.
- With tepo sections potentially being ramped, meters provide a way of mapping beats to whole pulses without
- referring to the tempo function(s) involved as the distance in whole pulses between a meter and a subsequent beat is
- sb->beat() - meter->beat() / meter->note_divisor().
- Because every meter falls on a known pulse, (derived from its bar), the rest is easy as the duration in pulses between
- two meters is of course
- (meater_b->bar - meter_a->bar) * meter_a->divisions_per_bar / meter_a->note_divisor.
+ The first tempo and meter are special. they must move together, and are locked to audio.
+ Audio locked tempi which lie before the first meter are made inactive.
- Below, beat calculations are based on meter sections and all pulse and tempo calculations are based on tempo sections.
- Beat to frame conversion of course requires the use of meter and tempo.
+ Recomputing the map is the process where the 'missing' location types are calculated.
+ We construct the tempo map by first using the locked location type of each section
+ to determine non-locked location types (pulse or minute position).
+ We then use this map to find the pulse or minute position of each meter (again depending on lock style).
- Remembering that ramped tempo sections interact, it is important to avoid referring to any other tempos when moving tempo sections,
- Here, beats (meters) are used to determine the new pulse (see predict_tempo_position())
-
- Recomputing the map is the process where the 'missing' position
- (tempo pulse or meter pulse & beat in the case of AudioTime, frame for MusicTime) is calculated.
- 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 tempo map (really just the tempos) to find the pulse or frame position of each meter (again depending on lock style).
-
- Having done this, we can now find any musical duration by selecting the tempo and meter covering the position (or tempo) in question
- and querying its appropriate meter/tempo.
+ Having done this, we can now traverse the Metrics list by pulse or minute
+ to query its relevant meter/tempo.
It is important to keep the _metrics in an order that makes sense.
Because ramped MusicTime and AudioTime tempos can interact with each other,
Music and Audio
Music and audio-locked objects may seem interchangeable on the surface, but when translating
- between audio samples and beats, keep in mind that a sample is only a quantised approximation
+ between audio samples and beat, remember that a sample is only a quantised approximation
of the actual time (in minutes) of a beat.
Thus if a gui user points to the frame occupying the start of a music-locked object on 1|3|0, it does not
mean that this frame is the actual location in time of 1|3|0.
beat_at_frame (frame_at_beat (beat)) != beat due to the time quantization of frame_at_beat().
Doing the second one will result in a beat distance error of up to 0.5 audio samples.
- So instead work in pulses and/or beats and only use beat position to caclulate frame position (e.g. after tempo change).
- For audio-locked objects, use frame position to calculate beat position.
+ frames_between_quarter_notes () eliminats this effect when determining time duration
+ from Beats distance, or instead work in quarter-notes and/or beats and convert to frames last.
- The above pointless example would then do:
- beat_at_pulse (pulse_at_beat (beat)) to avoid rounding.
+ The above pointless example could instead do:
+ beat_at_quarter_note (quarter_note_at_beat (beat)) to avoid rounding.
+
+ The Shaggs - Things I Wonder
+ https://www.youtube.com/watch?v=9wQK6zMJOoQ
*/
struct MetricSectionSorter {
_frame_rate = fr;
BBT_Time start (1, 1, 0);
- TempoSection *t = new TempoSection (0.0, 0, _default_tempo.beats_per_minute(), _default_tempo.note_type(), TempoSection::Ramp, AudioTime);
- MeterSection *m = new MeterSection (0.0, 0, 0.0, start, _default_meter.divisions_per_bar(), _default_meter.note_divisor(), AudioTime);
+ TempoSection *t = new TempoSection (0.0, 0.0, _default_tempo, AudioTime, fr);
+ MeterSection *m = new MeterSection (0.0, 0.0, 0.0, start, _default_meter.divisions_per_bar(), _default_meter.note_divisor(), AudioTime, fr);
+
+ t->set_initial (true);
+ t->set_locked_to_meter (true);
- t->set_movable (false);
- m->set_movable (false);
+ m->set_initial (true);
/* note: frame time is correct (zero) for both of these */
}
+TempoMap::TempoMap (TempoMap const & other)
+{
+ _frame_rate = other._frame_rate;
+ for (Metrics::const_iterator m = other._metrics.begin(); m != other._metrics.end(); ++m) {
+ TempoSection* ts = dynamic_cast<TempoSection*> (*m);
+ MeterSection* ms = dynamic_cast<MeterSection*> (*m);
+
+ if (ts) {
+ TempoSection* new_section = new TempoSection (*ts);
+ _metrics.push_back (new_section);
+ } else {
+ MeterSection* new_section = new MeterSection (*ms);
+ _metrics.push_back (new_section);
+ }
+ }
+}
+
+TempoMap&
+TempoMap::operator= (TempoMap const & other)
+{
+ if (&other != this) {
+ _frame_rate = other._frame_rate;
+
+ Metrics::const_iterator d = _metrics.begin();
+ while (d != _metrics.end()) {
+ delete (*d);
+ ++d;
+ }
+ _metrics.clear();
+
+ for (Metrics::const_iterator m = other._metrics.begin(); m != other._metrics.end(); ++m) {
+ TempoSection* ts = dynamic_cast<TempoSection*> (*m);
+ MeterSection* ms = dynamic_cast<MeterSection*> (*m);
+
+ if (ts) {
+ TempoSection* new_section = new TempoSection (*ts);
+ _metrics.push_back (new_section);
+ } else {
+ MeterSection* new_section = new MeterSection (*ms);
+ _metrics.push_back (new_section);
+ }
+ }
+ }
+
+ PropertyChanged (PropertyChange());
+
+ return *this;
+}
+
TempoMap::~TempoMap ()
{
Metrics::const_iterator d = _metrics.begin();
_metrics.clear();
}
+framepos_t
+TempoMap::frame_at_minute (const double time) const
+{
+ return (framepos_t) floor ((time * 60.0 * _frame_rate) + 0.5);
+}
+
+double
+TempoMap::minute_at_frame (const framepos_t frame) const
+{
+ return (frame / (double) _frame_rate) / 60.0;
+}
+
void
TempoMap::remove_tempo (const TempoSection& tempo, bool complete_operation)
{
for (i = _metrics.begin(); i != _metrics.end(); ++i) {
if (dynamic_cast<TempoSection*> (*i) != 0) {
if (tempo.frame() == (*i)->frame()) {
- if ((*i)->movable()) {
+ if (!(*i)->initial()) {
delete (*i);
_metrics.erase (i);
return true;
for (Metrics::iterator i = _metrics.begin(); i != _metrics.end(); ++i) {
if (dynamic_cast<MeterSection*> (*i) != 0) {
if (meter.frame() == (*i)->frame()) {
- if ((*i)->movable()) {
+ if (!(*i)->initial()) {
delete (*i);
_metrics.erase (i);
return true;
bool const ipm = insert_tempo->position_lock_style() == MusicTime;
if ((ipm && tempo->pulse() == insert_tempo->pulse()) || (!ipm && tempo->frame() == insert_tempo->frame())) {
- if (!tempo->movable()) {
+ if (tempo->initial()) {
/* can't (re)move this section, so overwrite
* its data content (but not its properties as
*(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 {
delete (*i);
if ((ipm && meter->beat() == insert_meter->beat()) || (!ipm && meter->frame() == insert_meter->frame())) {
- if (!meter->movable()) {
+ if (meter->initial()) {
/* can't (re)move this section, so overwrite
* its data content (but not its properties as
MeterSection* const insert_meter = dynamic_cast<MeterSection*> (section);
TempoSection* const insert_tempo = dynamic_cast<TempoSection*> (section);
Metrics::iterator i;
+
if (insert_meter) {
+ TempoSection* prev_t = 0;
+
for (i = _metrics.begin(); i != _metrics.end(); ++i) {
MeterSection* const meter = dynamic_cast<MeterSection*> (*i);
+ bool const ipm = insert_meter->position_lock_style() == MusicTime;
if (meter) {
- bool const ipm = insert_meter->position_lock_style() == MusicTime;
if ((ipm && meter->beat() > insert_meter->beat()) || (!ipm && meter->frame() > insert_meter->frame())) {
break;
}
+ } else {
+ if (prev_t && prev_t->locked_to_meter() && (!ipm && prev_t->frame() == insert_meter->frame())) {
+ break;
+ }
+
+ prev_t = dynamic_cast<TempoSection*> (*i);
}
}
} else if (insert_tempo) {
if (tempo) {
bool const ipm = insert_tempo->position_lock_style() == MusicTime;
- if ((ipm && tempo->pulse() > insert_tempo->pulse()) || (!ipm && tempo->frame() > insert_tempo->frame())) {
+ const bool lm = insert_tempo->locked_to_meter();
+ if ((ipm && tempo->pulse() > insert_tempo->pulse()) || (!ipm && tempo->frame() > insert_tempo->frame())
+ || (lm && tempo->pulse() > insert_tempo->pulse())) {
break;
}
}
}
_metrics.insert (i, section);
- //dump (_metrics, std::cout);
+ //dump (std::cout);
}
}
-
+/* user supplies the exact pulse if pls == MusicTime */
TempoSection*
-TempoMap::add_tempo (const Tempo& tempo, const double& pulse, const framepos_t& frame, ARDOUR::TempoSection::Type type, PositionLockStyle pls)
+TempoMap::add_tempo (const Tempo& tempo, const double& pulse, const framepos_t& frame, PositionLockStyle pls)
{
+ if (tempo.note_types_per_minute() <= 0.0) {
+ warning << "Cannot add tempo. note types per minute must be greater than zero." << endmsg;
+ return 0;
+ }
+
TempoSection* ts = 0;
+ TempoSection* prev_tempo = 0;
{
Glib::Threads::RWLock::WriterLock lm (lock);
- ts = add_tempo_locked (tempo, pulse, frame, type, pls, true);
- }
+ ts = add_tempo_locked (tempo, pulse, minute_at_frame (frame), pls, true);
+ for (Metrics::iterator i = _metrics.begin(); i != _metrics.end(); ++i) {
+ if ((*i)->is_tempo()) {
+ TempoSection* const this_t = static_cast<TempoSection*> (*i);
+
+ bool const ipm = ts->position_lock_style() == MusicTime;
+ bool const lm = ts->locked_to_meter();
+ if ((ipm && this_t->pulse() == ts->pulse()) || (!ipm && this_t->frame() == ts->frame())
+ || (lm && this_t->pulse() == ts->pulse())) {
+ if (prev_tempo && prev_tempo->type() == TempoSection::Ramp) {
+ prev_tempo->set_end_note_types_per_minute (ts->note_types_per_minute());
+ }
+ break;
+ }
+ prev_tempo = this_t;
+ }
+ }
+ recompute_map (_metrics);
+ }
PropertyChanged (PropertyChange ());
}
void
-TempoMap::replace_tempo (const TempoSection& ts, const Tempo& tempo, const double& pulse, const framepos_t& frame, TempoSection::Type type, PositionLockStyle pls)
+TempoMap::replace_tempo (TempoSection& ts, const Tempo& tempo, const double& pulse, const framepos_t& frame, PositionLockStyle pls)
{
+ if (tempo.note_types_per_minute() <= 0.0) {
+ warning << "Cannot replace tempo. note types per minute must be greater than zero." << endmsg;
+ return;
+ }
+
const bool locked_to_meter = ts.locked_to_meter();
+ TempoSection* new_ts = 0;
{
Glib::Threads::RWLock::WriterLock lm (lock);
TempoSection& first (first_tempo());
- if (ts.frame() != first.frame()) {
- remove_tempo_locked (ts);
- add_tempo_locked (tempo, pulse, frame, type, pls, true, locked_to_meter);
+ if (!ts.initial()) {
+ if (locked_to_meter) {
+ {
+ /* cannot move a meter-locked tempo section */
+ *static_cast<Tempo*>(&ts) = tempo;
+ recompute_map (_metrics);
+ }
+ } else {
+ remove_tempo_locked (ts);
+ new_ts = add_tempo_locked (tempo, pulse, minute_at_frame (frame), pls, true, locked_to_meter);
+
+ if (new_ts && new_ts->type() == TempoSection::Constant) {
+ new_ts->set_end_note_types_per_minute (new_ts->note_types_per_minute());
+ } else {
+ for (Metrics::iterator i = _metrics.begin(); i != _metrics.end(); ++i) {
+
+ if ((*i)->is_tempo()) {
+ TempoSection* const this_t = static_cast<TempoSection*> (*i);
+
+ bool const ipm = new_ts->position_lock_style() == MusicTime;
+ bool const lm = new_ts->locked_to_meter();
+ if ((ipm && this_t->pulse() > new_ts->pulse()) || (!ipm && this_t->frame() > new_ts->frame())
+ || (lm && this_t->pulse() > new_ts->pulse())) {
+ new_ts->set_end_note_types_per_minute (tempo.end_note_types_per_minute());
+
+ break;
+ }
+ }
+ }
+ }
+ }
+
} else {
- first.set_type (type);
first.set_pulse (0.0);
- first.set_frame (frame);
+ first.set_minute (minute_at_frame (frame));
first.set_position_lock_style (AudioTime);
+ first.set_locked_to_meter (true);
{
/* cannot move the first tempo section */
*static_cast<Tempo*>(&first) = tempo;
- recompute_map (_metrics);
}
}
+ recompute_map (_metrics);
}
PropertyChanged (PropertyChange ());
}
TempoSection*
-TempoMap::add_tempo_locked (const Tempo& tempo, double pulse, framepos_t frame
- , TempoSection::Type type, PositionLockStyle pls, bool recompute, bool locked_to_meter)
+TempoMap::add_tempo_locked (const Tempo& tempo, double pulse, double minute
+ , PositionLockStyle pls, bool recompute, bool locked_to_meter)
{
- TempoSection* t = new TempoSection (pulse, frame, tempo.beats_per_minute(), tempo.note_type(), type, pls);
+ TempoSection* t = new TempoSection (pulse, minute, tempo, pls, _frame_rate);
t->set_locked_to_meter (locked_to_meter);
- bool solved = false;
do_insert (t);
if (recompute) {
if (pls == AudioTime) {
- solved = solve_map_frame (_metrics, t, t->frame());
+ solve_map_minute (_metrics, t, t->minute());
} else {
- solved = solve_map_pulse (_metrics, t, t->pulse());
+ solve_map_pulse (_metrics, t, t->pulse());
}
recompute_meters (_metrics);
}
- if (!solved && recompute) {
- recompute_map (_metrics);
- }
-
return t;
}
MeterSection*
-TempoMap::add_meter (const Meter& meter, const double& beat, const Timecode::BBT_Time& where, const framepos_t& frame, PositionLockStyle pls)
+TempoMap::add_meter (const Meter& meter, const double& beat, const Timecode::BBT_Time& where, framepos_t frame, PositionLockStyle pls)
{
MeterSection* m = 0;
{
#ifndef NDEBUG
if (DEBUG_ENABLED(DEBUG::TempoMap)) {
- dump (_metrics, std::cerr);
+ dump (std::cerr);
}
#endif
}
void
-TempoMap::replace_meter (const MeterSection& ms, const Meter& meter, const BBT_Time& where, const framepos_t& frame, PositionLockStyle pls)
+TempoMap::replace_meter (const MeterSection& ms, const Meter& meter, const BBT_Time& where, framepos_t frame, PositionLockStyle pls)
{
{
Glib::Threads::RWLock::WriterLock lm (lock);
const double beat = beat_at_bbt_locked (_metrics, where);
- if (ms.movable()) {
+ if (!ms.initial()) {
remove_meter_locked (ms);
add_meter_locked (meter, beat, where, frame, pls, true);
} else {
*static_cast<Meter*>(&first) = meter;
first.set_position_lock_style (AudioTime);
first.set_pulse (0.0);
- first.set_frame (frame);
+ first.set_minute (minute_at_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_minute (first.minute());
+ first_t.set_locked_to_meter (true);
first_t.set_pulse (0.0);
first_t.set_position_lock_style (AudioTime);
recompute_map (_metrics);
MeterSection*
TempoMap::add_meter_locked (const Meter& meter, double beat, const BBT_Time& where, framepos_t frame, PositionLockStyle pls, bool recompute)
{
- const MeterSection& prev_m = meter_section_at_frame_locked (_metrics, frame - 1);
+ const MeterSection& prev_m = meter_section_at_minute_locked (_metrics, minute_at_beat_locked (_metrics, beat) - minute_at_frame (1));
const double pulse = ((where.bars - prev_m.bbt().bars) * (prev_m.divisions_per_bar() / prev_m.note_divisor())) + prev_m.pulse();
+ const double time_minutes = minute_at_pulse_locked (_metrics, pulse);
TempoSection* mlt = 0;
if (pls == AudioTime) {
/* add meter-locked tempo */
- mlt = add_tempo_locked (tempo_at_frame_locked (_metrics, frame), pulse, frame, TempoSection::Ramp, AudioTime, true, true);
+ mlt = add_tempo_locked (tempo_at_minute_locked (_metrics, time_minutes), pulse, minute_at_frame (frame), AudioTime, true, true);
if (!mlt) {
return 0;
}
- MeterSection* new_meter = new MeterSection (pulse, frame, beat, where, meter.divisions_per_bar(), meter.note_divisor(), pls);
+ MeterSection* new_meter = new MeterSection (pulse, minute_at_frame (frame), beat, where, meter.divisions_per_bar(), meter.note_divisor(), pls, _frame_rate);
+
bool solved = false;
do_insert (new_meter);
if (recompute) {
if (pls == AudioTime) {
- solved = solve_map_frame (_metrics, new_meter, frame);
+ solved = solve_map_minute (_metrics, new_meter, minute_at_frame (frame));
+ /* we failed, most likely due to some impossible frame requirement wrt audio-locked tempi.
+ fudge frame so that the meter ends up at its BBT position instead.
+ */
+ if (!solved) {
+ solved = solve_map_minute (_metrics, new_meter, minute_at_frame (prev_m.frame() + 1));
+ }
} else {
solved = solve_map_bbt (_metrics, new_meter, where);
/* required due to resetting the pulse of meter-locked tempi above.
}
void
-TempoMap::change_initial_tempo (double beats_per_minute, double note_type)
+TempoMap::change_initial_tempo (double note_types_per_minute, double note_type, double end_note_types_per_minute)
{
- Tempo newtempo (beats_per_minute, note_type);
+ Tempo newtempo (note_types_per_minute, note_type, end_note_types_per_minute);
TempoSection* t;
for (Metrics::iterator i = _metrics.begin(); i != _metrics.end(); ++i) {
}
void
-TempoMap::change_existing_tempo_at (framepos_t where, double beats_per_minute, double note_type)
+TempoMap::change_existing_tempo_at (framepos_t where, double note_types_per_minute, double note_type, double end_ntpm)
{
- Tempo newtempo (beats_per_minute, note_type);
+ Tempo newtempo (note_types_per_minute, note_type, end_ntpm);
TempoSection* prev;
TempoSection* first;
if (!t->active()) {
continue;
}
- if (!t->movable()) {
+ if (t->initial()) {
return *t;
}
}
if (!t->active()) {
continue;
}
- if (!t->movable()) {
+ if (t->initial()) {
return *t;
}
}
if (!t->active()) {
continue;
}
- if (!t->movable()) {
+ if (t->initial()) {
if (!prev_t) {
t->set_pulse (0.0);
prev_t = t;
}
if (prev_t) {
if (t->position_lock_style() == AudioTime) {
- prev_t->set_c_func (prev_t->compute_c_func_frame (t->pulses_per_minute(), t->frame(), _frame_rate));
+ prev_t->set_c (prev_t->compute_c_minute (prev_t->end_note_types_per_minute(), t->minute()));
if (!t->locked_to_meter()) {
- t->set_pulse (prev_t->pulse_at_tempo (t->pulses_per_minute(), t->frame(), _frame_rate));
+ t->set_pulse (prev_t->pulse_at_ntpm (prev_t->end_note_types_per_minute(), t->minute()));
}
} else {
- 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_t->set_c (prev_t->compute_c_pulse (prev_t->end_note_types_per_minute(), t->pulse()));
+ t->set_minute (prev_t->minute_at_ntpm (prev_t->end_note_types_per_minute(), t->pulse()));
}
}
prev_t = t;
}
}
- prev_t->set_c_func (0.0);
+ assert (prev_t);
+ prev_t->set_c (0.0);
}
/* tempos must be positioned correctly.
TempoSection* t;
if ((*ii)->is_tempo()) {
t = static_cast<TempoSection*> (*ii);
- if ((t->locked_to_meter() || !t->movable()) && t->frame() == meter->frame()) {
+ if (t->locked_to_meter() && t->frame() == meter->frame()) {
meter_locked_tempo = t;
break;
}
}
if (prev_m) {
- const double beats = (meter->bbt().bars - prev_m->bbt().bars) * prev_m->divisions_per_bar();
+ double beats = (meter->bbt().bars - prev_m->bbt().bars) * prev_m->divisions_per_bar();
if (beats + prev_m->beat() != meter->beat()) {
/* reordering caused a bbt change */
+
+ beats = meter->beat() - prev_m->beat();
b_bbt = make_pair (beats + prev_m->beat()
, BBT_Time ((beats / prev_m->divisions_per_bar()) + prev_m->bbt().bars, 1, 0));
pulse = prev_m->pulse() + (beats / prev_m->note_divisor());
- } else if (meter->movable()) {
+ } else if (!meter->initial()) {
b_bbt = make_pair (meter->beat(), meter->bbt());
pulse = prev_m->pulse() + (beats / prev_m->note_divisor());
}
meter->set_beat (b_bbt);
meter->set_pulse (pulse);
- meter->set_frame (frame_at_pulse_locked (metrics, pulse));
+ meter->set_minute (minute_at_pulse_locked (metrics, pulse));
}
prev_m = meter;
{
/* CALLER MUST HOLD WRITE LOCK */
- if (end < 0) {
-
- /* we will actually stop once we hit
- the last metric.
- */
- end = max_framepos;
-
- }
-
DEBUG_TRACE (DEBUG::TempoMath, string_compose ("recomputing tempo map, zero to %1\n", end));
if (end == 0) {
return m;
}
-/** Returns the beat duration corresponding to the supplied frame, possibly returning a negative value.
+/** Returns the BBT (meter-based) beat corresponding to the supplied frame, possibly returning a negative value.
* @param frame The session frame position.
* @return The beat duration according to the tempo map at the supplied frame.
+ *
* If the supplied frame lies before the first meter, the returned beat duration will be negative.
* The returned beat is obtained using the first meter and the continuation of the tempo curve (backwards).
*
TempoMap::beat_at_frame (const framecnt_t& frame) const
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- return beat_at_frame_locked (_metrics, frame);
+
+ return beat_at_minute_locked (_metrics, minute_at_frame (frame));
}
/* This function uses both tempo and meter.*/
double
-TempoMap::beat_at_frame_locked (const Metrics& metrics, const framecnt_t& frame) const
+TempoMap::beat_at_minute_locked (const Metrics& metrics, const double& minute) const
{
- const TempoSection& ts = tempo_section_at_frame_locked (metrics, frame);
+ const TempoSection& ts = tempo_section_at_minute_locked (metrics, minute);
MeterSection* prev_m = 0;
MeterSection* next_m = 0;
for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
if (!(*i)->is_tempo()) {
- if (prev_m && (*i)->frame() > frame) {
+ if (prev_m && (*i)->minute() > minute) {
next_m = static_cast<MeterSection*> (*i);
break;
}
}
}
- const double beat = prev_m->beat() + (ts.pulse_at_frame (frame, _frame_rate) - prev_m->pulse()) * prev_m->note_divisor();
+ const double beat = prev_m->beat() + (ts.pulse_at_minute (minute) - prev_m->pulse()) * prev_m->note_divisor();
/* audio locked meters fake their beat */
if (next_m && next_m->beat() < beat) {
return beat;
}
+/** Returns the frame corresponding to the supplied BBT (meter-based) beat.
+ * @param beat The BBT (meter-based) beat.
+ * @return The frame duration according to the tempo map at the supplied BBT (meter-based) beat.
+ *
+ * This function uses both tempo and meter.
+ */
framepos_t
TempoMap::frame_at_beat (const double& beat) const
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- return frame_at_beat_locked (_metrics, beat);
+
+ return frame_at_minute (minute_at_beat_locked (_metrics, beat));
}
/* meter & tempo section based */
-framepos_t
-TempoMap::frame_at_beat_locked (const Metrics& metrics, const double& beat) const
+double
+TempoMap::minute_at_beat_locked (const Metrics& metrics, const double& beat) const
{
MeterSection* prev_m = 0;
TempoSection* prev_t = 0;
prev_m = m;
}
}
+ assert (prev_m);
TempoSection* t;
for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
if ((*i)->is_tempo()) {
t = static_cast<TempoSection*> (*i);
+
+ if (!t->active()) {
+ continue;
+ }
+
if (prev_t && ((t->pulse() - prev_m->pulse()) * prev_m->note_divisor()) + prev_m->beat() > beat) {
break;
}
}
}
+ assert (prev_t);
- return prev_t->frame_at_pulse (((beat - prev_m->beat()) / prev_m->note_divisor()) + prev_m->pulse(), _frame_rate);
+ return prev_t->minute_at_pulse (((beat - prev_m->beat()) / prev_m->note_divisor()) + prev_m->pulse());
}
+/** Returns a Tempo corresponding to the supplied frame position.
+ * @param frame The audio frame.
+ * @return a Tempo according to the tempo map at the supplied frame.
+ *
+ */
Tempo
TempoMap::tempo_at_frame (const framepos_t& frame) const
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- return tempo_at_frame_locked (_metrics, frame);
+
+ return tempo_at_minute_locked (_metrics, minute_at_frame (frame));
}
Tempo
-TempoMap::tempo_at_frame_locked (const Metrics& metrics, const framepos_t& frame) const
+TempoMap::tempo_at_minute_locked (const Metrics& metrics, const double& minute) const
{
TempoSection* prev_t = 0;
TempoSection* t;
- for (Metrics::const_iterator i = _metrics.begin(); i != _metrics.end(); ++i) {
+ for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
if ((*i)->is_tempo()) {
t = static_cast<TempoSection*> (*i);
if (!t->active()) {
continue;
}
- if ((prev_t) && t->frame() > frame) {
+ if ((prev_t) && t->minute() > minute) {
/* t is the section past frame */
- const double ret_bpm = prev_t->tempo_at_frame (frame, _frame_rate) * 4.0;
- const Tempo ret_tempo (ret_bpm, prev_t->note_type());
- return ret_tempo;
+ return prev_t->tempo_at_minute (minute);
}
prev_t = t;
}
}
- const double ret = prev_t->beats_per_minute();
- const Tempo ret_tempo (ret, prev_t->note_type ());
-
- return ret_tempo;
+ return Tempo (prev_t->note_types_per_minute(), prev_t->note_type(), prev_t->end_note_types_per_minute());
}
/** returns the frame at which the supplied tempo occurs, or
TempoMap::frame_at_tempo (const Tempo& tempo) const
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- return frame_at_tempo_locked (_metrics, tempo);
+
+ return frame_at_minute (minute_at_tempo_locked (_metrics, tempo));
}
+double
+TempoMap::minute_at_tempo_locked (const Metrics& metrics, const Tempo& tempo) const
+{
+ TempoSection* prev_t = 0;
+ const double tempo_bpm = tempo.note_types_per_minute();
-framepos_t
-TempoMap::frame_at_tempo_locked (const Metrics& metrics, const Tempo& tempo) const
+ Metrics::const_iterator i;
+
+ for (i = metrics.begin(); i != metrics.end(); ++i) {
+ TempoSection* t;
+ if ((*i)->is_tempo()) {
+ t = static_cast<TempoSection*> (*i);
+
+ if (!t->active()) {
+ continue;
+ }
+
+
+
+ if (t->note_types_per_minute() == tempo_bpm) {
+ return t->minute();
+ }
+
+ if (prev_t) {
+ const double prev_t_bpm = prev_t->note_types_per_minute();
+ const double prev_t_end_bpm = prev_t->end_note_types_per_minute();
+ if ((prev_t_bpm > tempo_bpm && prev_t_end_bpm < tempo_bpm)
+ || (prev_t_bpm < tempo_bpm && prev_t_end_bpm > tempo_bpm)
+ || (prev_t_end_bpm == tempo_bpm)) {
+
+ return prev_t->minute_at_ntpm (tempo_bpm, t->pulse());
+ }
+ }
+ prev_t = t;
+ }
+ }
+
+ return prev_t->minute();
+}
+
+Tempo
+TempoMap::tempo_at_pulse_locked (const Metrics& metrics, const double& pulse) const
+{
+ TempoSection* prev_t = 0;
+
+ TempoSection* t;
+
+ for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
+ if ((*i)->is_tempo()) {
+ t = static_cast<TempoSection*> (*i);
+ if (!t->active()) {
+ continue;
+ }
+ if ((prev_t) && t->pulse() > pulse) {
+ /* t is the section past frame */
+ return prev_t->tempo_at_pulse (pulse);
+ }
+ prev_t = t;
+ }
+ }
+
+ return Tempo (prev_t->note_types_per_minute(), prev_t->note_type(), prev_t->end_note_types_per_minute());
+}
+
+double
+TempoMap::pulse_at_tempo_locked (const Metrics& metrics, const Tempo& tempo) const
{
TempoSection* prev_t = 0;
- const double tempo_ppm = tempo.beats_per_minute() / 4.0;
+ const double tempo_bpm = tempo.note_types_per_minute();
Metrics::const_iterator i;
- for (i = _metrics.begin(); i != _metrics.end(); ++i) {
+ for (i = metrics.begin(); i != metrics.end(); ++i) {
TempoSection* t;
if ((*i)->is_tempo()) {
t = static_cast<TempoSection*> (*i);
continue;
}
- const double t_ppm = t->beats_per_minute() / 4.0;
+ const double t_bpm = t->note_types_per_minute();
- if (t_ppm == tempo_ppm) {
- return t->frame();
+ if (t_bpm == tempo_bpm) {
+ return t->pulse();
}
if (prev_t) {
- const double prev_t_ppm = prev_t->beats_per_minute() / 4.0;
+ const double prev_t_bpm = prev_t->note_types_per_minute();
- if ((t_ppm > tempo_ppm && prev_t_ppm < tempo_ppm) || (t_ppm < tempo_ppm && prev_t_ppm > tempo_ppm)) {
- return prev_t->frame_at_tempo (tempo_ppm, prev_t->pulse(), _frame_rate);
+ if ((t_bpm > tempo_bpm && prev_t_bpm < tempo_bpm) || (t_bpm < tempo_bpm && prev_t_bpm > tempo_bpm)) {
+ return prev_t->pulse_at_ntpm (prev_t->note_types_per_minute(), prev_t->minute());
}
}
prev_t = t;
}
}
- return prev_t->frame();
+ return prev_t->pulse();
}
-/** more precise than doing tempo_at_frame (frame_at_beat (b)),
- * as there is no intermediate frame rounding.
+/** Returns a Tempo corresponding to the supplied position in quarter-note beats.
+ * @param qn the position in quarter note beats.
+ * @return the Tempo at the supplied quarter-note.
*/
Tempo
-TempoMap::tempo_at_beat (const double& beat) const
+TempoMap::tempo_at_quarter_note (const double& qn) const
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- const MeterSection* prev_m = &meter_section_at_beat_locked (_metrics, beat);
- const TempoSection* prev_t = &tempo_section_at_beat_locked (_metrics, beat);
- const double note_type = prev_t->note_type();
- return Tempo (prev_t->tempo_at_pulse (((beat - prev_m->beat()) / prev_m->note_divisor()) + prev_m->pulse()) * 4.0, note_type);
+ return tempo_at_pulse_locked (_metrics, qn / 4.0);
}
+/** Returns the position in quarter-note beats corresponding to the supplied Tempo.
+ * @param tempo the tempo.
+ * @return the position in quarter-note beats where the map bpm
+ * is equal to that of the Tempo. currently ignores note_type.
+ */
double
-TempoMap::pulse_at_beat (const double& beat) const
+TempoMap::quarter_note_at_tempo (const Tempo& tempo) const
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- return pulse_at_beat_locked (_metrics, beat);
+
+ return pulse_at_tempo_locked (_metrics, tempo) * 4.0;;
}
+/** Returns the whole-note pulse corresponding to the supplied BBT (meter-based) beat.
+ * @param metrics the list of metric sections used to calculate the pulse.
+ * @param beat The BBT (meter-based) beat.
+ * @return the whole-note pulse at the supplied BBT (meter-based) beat.
+ *
+ * a pulse or whole note is the base musical position of a MetricSection.
+ * it is equivalent to four quarter notes.
+ *
+ */
double
TempoMap::pulse_at_beat_locked (const Metrics& metrics, const double& beat) const
{
return prev_m->pulse() + ((beat - prev_m->beat()) / prev_m->note_divisor());
}
-double
-TempoMap::beat_at_pulse (const double& pulse) const
-{
- Glib::Threads::RWLock::ReaderLock lm (lock);
- return beat_at_pulse_locked (_metrics, pulse);
-}
-
+/** Returns the BBT (meter-based) beat corresponding to the supplied whole-note pulse .
+ * @param metrics the list of metric sections used to calculate the beat.
+ * @param pulse the whole-note pulse.
+ * @return the meter-based beat at the supplied whole-note pulse.
+ *
+ * a pulse or whole note is the base musical position of a MetricSection.
+ * it is equivalent to four quarter notes.
+ */
double
TempoMap::beat_at_pulse_locked (const Metrics& metrics, const double& pulse) const
{
if (!(*i)->is_tempo()) {
m = static_cast<MeterSection*> (*i);
if (prev_m && m->pulse() > pulse) {
- if (((pulse - prev_m->pulse()) * prev_m->note_divisor()) + prev_m->beat() > m->beat()) {
- break;
- }
+ break;
}
prev_m = m;
}
}
+ assert (prev_m);
double const ret = ((pulse - prev_m->pulse()) * prev_m->note_divisor()) + prev_m->beat();
return ret;
}
+/* tempo section based */
double
-TempoMap::pulse_at_frame (const framepos_t& frame) const
-{
- Glib::Threads::RWLock::ReaderLock lm (lock);
- return pulse_at_frame_locked (_metrics, frame);
-}
-
-/* tempo section based */
-double
-TempoMap::pulse_at_frame_locked (const Metrics& metrics, const framepos_t& frame) const
+TempoMap::pulse_at_minute_locked (const Metrics& metrics, const double& minute) const
{
/* HOLD (at least) THE READER LOCK */
TempoSection* prev_t = 0;
if (!t->active()) {
continue;
}
- if (prev_t && t->frame() > frame) {
+ if (prev_t && t->minute() > minute) {
/*the previous ts is the one containing the frame */
- const double ret = prev_t->pulse_at_frame (frame, _frame_rate);
+ const double ret = prev_t->pulse_at_minute (minute);
/* audio locked section in new meter*/
if (t->pulse() < ret) {
return t->pulse();
}
/* treated as constant for this ts */
- const double pulses_in_section = (frame - prev_t->frame()) / prev_t->frames_per_pulse (_frame_rate);
+ const double pulses_in_section = ((minute - prev_t->minute()) * prev_t->note_types_per_minute()) / prev_t->note_type();
return pulses_in_section + prev_t->pulse();
}
-framepos_t
-TempoMap::frame_at_pulse (const double& pulse) const
-{
- Glib::Threads::RWLock::ReaderLock lm (lock);
- return frame_at_pulse_locked (_metrics, pulse);
-}
-
/* tempo section based */
-framepos_t
-TempoMap::frame_at_pulse_locked (const Metrics& metrics, const double& pulse) const
+double
+TempoMap::minute_at_pulse_locked (const Metrics& metrics, const double& pulse) const
{
/* HOLD THE READER LOCK */
continue;
}
if (prev_t && t->pulse() > pulse) {
- return prev_t->frame_at_pulse (pulse, _frame_rate);
+ return prev_t->minute_at_pulse (pulse);
}
prev_t = t;
}
}
/* must be treated as constant, irrespective of _type */
- double const dtime = (pulse - prev_t->pulse()) * prev_t->frames_per_pulse (_frame_rate);
+ double const dtime = ((pulse - prev_t->pulse()) * prev_t->note_type()) / prev_t->note_types_per_minute();
- return (framecnt_t) floor (dtime) + prev_t->frame();
+ return dtime + prev_t->minute();
}
+/** Returns the BBT (meter-based) beat corresponding to the supplied BBT time.
+ * @param bbt The BBT time (meter-based).
+ * @return bbt The BBT beat (meter-based) at the supplied BBT time.
+ *
+ */
double
TempoMap::beat_at_bbt (const Timecode::BBT_Time& bbt)
{
return ret;
}
+/** Returns the BBT time corresponding to the supplied BBT (meter-based) beat.
+ * @param beat The BBT (meter-based) beat.
+ * @return The BBT time (meter-based) at the supplied meter-based beat.
+ *
+ */
Timecode::BBT_Time
-TempoMap::bbt_at_beat (const double& beats)
+TempoMap::bbt_at_beat (const double& beat)
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- return bbt_at_beat_locked (_metrics, beats);
+ return bbt_at_beat_locked (_metrics, beat);
}
Timecode::BBT_Time
prev_m = m;
}
}
+ assert (prev_m);
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());
return ret;
}
+/** Returns the quarter-note beat corresponding to the supplied BBT time (meter-based).
+ * @param bbt The BBT time (meter-based).
+ * @return the quarter note beat at the supplied BBT time
+ *
+ * quarter-notes ignore meter and are based on pulse (the musical unit of MetricSection).
+ *
+ * while the input uses meter, the output does not.
+ */
double
-TempoMap::pulse_at_bbt (const Timecode::BBT_Time& bbt)
+TempoMap::quarter_note_at_bbt (const Timecode::BBT_Time& bbt)
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- return pulse_at_bbt_locked (_metrics, bbt);
+ return pulse_at_bbt_locked (_metrics, bbt) * 4.0;
}
double
-TempoMap::pulse_at_bbt_rt (const Timecode::BBT_Time& bbt)
+TempoMap::quarter_note_at_bbt_rt (const Timecode::BBT_Time& bbt)
{
- Glib::Threads::RWLock::ReaderLock lm (lock);
+ Glib::Threads::RWLock::ReaderLock lm (lock, Glib::Threads::TRY_LOCK);
if (!lm.locked()) {
- throw std::logic_error ("TempoMap::pulse_at_bbt_rt() could not lock tempo map");
+ throw std::logic_error ("TempoMap::quarter_note_at_bbt_rt() could not lock tempo map");
}
- return pulse_at_bbt_locked (_metrics, bbt);
+ return pulse_at_bbt_locked (_metrics, bbt) * 4.0;
}
double
return ret;
}
+/** Returns the BBT time corresponding to the supplied quarter-note beat.
+ * @param qn the quarter-note beat.
+ * @return The BBT time (meter-based) at the supplied meter-based beat.
+ *
+ * quarter-notes ignore meter and are based on pulse (the musical unit of MetricSection).
+ *
+ */
Timecode::BBT_Time
-TempoMap::bbt_at_pulse (const double& pulse)
+TempoMap::bbt_at_quarter_note (const double& qn)
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- return bbt_at_pulse_locked (_metrics, pulse);
+ return bbt_at_pulse_locked (_metrics, qn / 4.0);
}
+/** Returns the BBT time (meter-based) corresponding to the supplied whole-note pulse position.
+ * @param metrics The list of metric sections used to determine the result.
+ * @param pulse The whole-note pulse.
+ * @return The BBT time at the supplied whole-note pulse.
+ *
+ * a pulse or whole note is the basic musical position of a MetricSection.
+ * it is equivalent to four quarter notes.
+ * while the output uses meter, the input does not.
+ */
Timecode::BBT_Time
TempoMap::bbt_at_pulse_locked (const Metrics& metrics, const double& pulse) const
{
}
}
+ assert (prev_m);
+
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);
return ret;
}
+/** Returns the BBT time corresponding to the supplied frame position.
+ * @param frame the position in audio samples.
+ * @return the BBT time at the frame position .
+ *
+ */
BBT_Time
TempoMap::bbt_at_frame (framepos_t frame)
{
bbt.bars = 1;
bbt.beats = 1;
bbt.ticks = 0;
- warning << string_compose (_("tempo map asked for BBT time at frame %1\n"), frame) << endmsg;
+#ifndef NDEBUG
+ warning << string_compose (_("tempo map was asked for BBT time at frame %1\n"), frame) << endmsg;
+#endif
return bbt;
}
+
+ const double minute = minute_at_frame (frame);
+
Glib::Threads::RWLock::ReaderLock lm (lock);
- return bbt_at_frame_locked (_metrics, frame);
+ return bbt_at_minute_locked (_metrics, minute);
}
BBT_Time
TempoMap::bbt_at_frame_rt (framepos_t frame)
{
+ const double minute = minute_at_frame (frame);
+
Glib::Threads::RWLock::ReaderLock lm (lock, Glib::Threads::TRY_LOCK);
if (!lm.locked()) {
throw std::logic_error ("TempoMap::bbt_at_frame_rt() could not lock tempo map");
}
- return bbt_at_frame_locked (_metrics, frame);
+ return bbt_at_minute_locked (_metrics, minute);
}
Timecode::BBT_Time
-TempoMap::bbt_at_frame_locked (const Metrics& metrics, const framepos_t& frame) const
+TempoMap::bbt_at_minute_locked (const Metrics& metrics, const double& minute) const
{
- if (frame < 0) {
+ if (minute < 0) {
BBT_Time bbt;
bbt.bars = 1;
bbt.beats = 1;
return bbt;
}
- const TempoSection& ts = tempo_section_at_frame_locked (metrics, frame);
+ const TempoSection& ts = tempo_section_at_minute_locked (metrics, minute);
MeterSection* prev_m = 0;
MeterSection* next_m = 0;
for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
if (!(*i)->is_tempo()) {
m = static_cast<MeterSection*> (*i);
- if (prev_m && m->frame() > frame) {
+ if (prev_m && m->minute() > minute) {
next_m = m;
break;
}
}
}
- double beat = prev_m->beat() + (ts.pulse_at_frame (frame, _frame_rate) - prev_m->pulse()) * prev_m->note_divisor();
+ double beat = prev_m->beat() + (ts.pulse_at_minute (minute) - prev_m->pulse()) * prev_m->note_divisor();
/* handle frame before first meter */
- if (frame < prev_m->frame()) {
+ if (minute < prev_m->minute()) {
beat = 0.0;
}
/* audio locked meters fake their beat */
return ret;
}
+/** Returns the frame position corresponding to the supplied BBT time.
+ * @param bbt the position in BBT time.
+ * @return the frame position at bbt.
+ *
+ */
framepos_t
TempoMap::frame_at_bbt (const BBT_Time& bbt)
{
if (bbt.bars < 1) {
+#ifndef NDEBUG
warning << string_compose (_("tempo map asked for frame time at bar < 1 (%1)\n"), bbt) << endmsg;
+#endif
return 0;
}
if (bbt.beats < 1) {
throw std::logic_error ("beats are counted from one");
}
- Glib::Threads::RWLock::ReaderLock lm (lock);
- return frame_at_bbt_locked (_metrics, bbt);
+ double minute;
+ {
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+ minute = minute_at_bbt_locked (_metrics, bbt);
+ }
+
+ return frame_at_minute (minute);
}
/* meter & tempo section based */
-framepos_t
-TempoMap::frame_at_bbt_locked (const Metrics& metrics, const BBT_Time& bbt) const
+double
+TempoMap::minute_at_bbt_locked (const Metrics& metrics, const BBT_Time& bbt) const
{
/* HOLD THE READER LOCK */
- const framepos_t ret = frame_at_beat_locked (metrics, beat_at_bbt_locked (metrics, bbt));
+ const double ret = minute_at_beat_locked (metrics, beat_at_bbt_locked (metrics, bbt));
return ret;
}
/**
- * Returns the distance from 0 in quarter pulses at the supplied frame.
+ * Returns the quarter-note beat position corresponding to the supplied frame.
*
- * Plugin APIs don't count ticks in the same way PROGRAM_NAME does.
- * We use ticks per beat whereas the rest of the world uses ticks per quarter note.
- * This is more or less the VST's ppqPos (a scalar you use to obtain tick position
- * in whatever ppqn you're using).
+ * @param frame the position in frames.
+ * @return The quarter-note position of the supplied frame. Ignores meter.
*
- * @param frame The distance in frames relative to session 0 whose quarter note distance you would like.
- * @return The quarter note (quarter pulse) distance from session 0 to the supplied frame. Ignores meter.
*/
-
double
-TempoMap::quarter_note_at_frame (const framepos_t frame)
+TempoMap::quarter_note_at_frame (const framepos_t frame) const
{
- Glib::Threads::RWLock::ReaderLock lm (lock, Glib::Threads::TRY_LOCK);
+ const double minute = minute_at_frame (frame);
- const double ret = quarter_note_at_frame_locked (_metrics, frame);
+ Glib::Threads::RWLock::ReaderLock lm (lock);
- return ret;
+ return pulse_at_minute_locked (_metrics, minute) * 4.0;
}
double
-TempoMap::quarter_note_at_frame_locked (const Metrics& metrics, const framepos_t frame) const
+TempoMap::quarter_note_at_frame_rt (const framepos_t frame) const
{
- const double ret = pulse_at_frame_locked (metrics, frame) * 4.0;
-
- return ret;
-}
+ const double minute = minute_at_frame (frame);
-double
-TempoMap::quarter_note_at_frame_rt (const framepos_t frame)
-{
Glib::Threads::RWLock::ReaderLock lm (lock, Glib::Threads::TRY_LOCK);
if (!lm.locked()) {
throw std::logic_error ("TempoMap::quarter_note_at_frame_rt() could not lock tempo map");
}
- const double ret = pulse_at_frame_locked (_metrics, frame) * 4.0;
-
- return ret;
+ return pulse_at_minute_locked (_metrics, minute) * 4.0;
}
+/**
+ * Returns the frame position corresponding to the supplied quarter-note beat.
+ *
+ * @param quarter_note the quarter-note position.
+ * @return the frame position of the supplied quarter-note. Ignores meter.
+ *
+ *
+*/
framepos_t
-TempoMap::frame_at_quarter_note (const double quarter_note)
+TempoMap::frame_at_quarter_note (const double quarter_note) const
{
- Glib::Threads::RWLock::ReaderLock lm (lock, Glib::Threads::TRY_LOCK);
+ double minute;
+ {
+ Glib::Threads::RWLock::ReaderLock lm (lock);
- const framepos_t ret = frame_at_quarter_note_locked (_metrics, quarter_note);
+ minute = minute_at_pulse_locked (_metrics, quarter_note / 4.0);
+ }
- return ret;
+ return frame_at_minute (minute);
}
-framepos_t
-TempoMap::frame_at_quarter_note_locked (const Metrics& metrics, const double quarter_note) const
+/** Returns the quarter-note beats corresponding to the supplied BBT (meter-based) beat.
+ * @param beat The BBT (meter-based) beat.
+ * @return The quarter-note position of the supplied BBT (meter-based) beat.
+ *
+ * a quarter-note may be compared with and assigned to Evoral::Beats.
+ *
+ */
+double
+TempoMap::quarter_note_at_beat (const double beat) const
{
- const framepos_t ret = frame_at_pulse_locked (metrics, quarter_note / 4.0);
+ Glib::Threads::RWLock::ReaderLock lm (lock);
- return ret;
+ return pulse_at_beat_locked (_metrics, beat) * 4.0;
}
+/** Returns the BBT (meter-based) beat position corresponding to the supplied quarter-note beats.
+ * @param quarter_note The position in quarter-note beats.
+ * @return the BBT (meter-based) beat position of the supplied quarter-note beats.
+ *
+ * a quarter-note is the musical unit of Evoral::Beats.
+ *
+ */
double
-TempoMap::quarter_note_at_beat (const double beat)
+TempoMap::beat_at_quarter_note (const double quarter_note) const
{
- Glib::Threads::RWLock::ReaderLock lm (lock, Glib::Threads::TRY_LOCK);
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+
+ return beat_at_pulse_locked (_metrics, quarter_note / 4.0);
+}
- const double ret = quarter_note_at_beat_locked (_metrics, beat);
+/** Returns the duration in frames between two supplied quarter-note beat positions.
+ * @param start the first position in quarter-note beats.
+ * @param end the end position in quarter-note beats.
+ * @return the frame distance ober the quarter-note beats duration.
+ *
+ * use this rather than e.g.
+ * frame_at-quarter_note (end_beats) - frame_at_quarter_note (start_beats).
+ * frames_between_quarter_notes() doesn't round to audio frames as an intermediate step,
+ *
+ */
+framecnt_t
+TempoMap::frames_between_quarter_notes (const double start, const double end) const
+{
+ double minutes;
- return ret;
+ {
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+ minutes = minutes_between_quarter_notes_locked (_metrics, start, end);
+ }
+
+ return frame_at_minute (minutes);
}
double
-TempoMap::quarter_note_at_beat_locked (const Metrics& metrics, const double beat) const
+TempoMap::minutes_between_quarter_notes_locked (const Metrics& metrics, const double start, const double end) const
{
- const double ret = pulse_at_beat_locked (metrics, beat) * 4.0;
- return ret;
+ return minute_at_pulse_locked (metrics, end / 4.0) - minute_at_pulse_locked (metrics, start / 4.0);
}
double
-TempoMap::beat_at_quarter_note (const double quarter_note)
+TempoMap::quarter_notes_between_frames (const framecnt_t start, const framecnt_t end) const
{
- Glib::Threads::RWLock::ReaderLock lm (lock, Glib::Threads::TRY_LOCK);
+ Glib::Threads::RWLock::ReaderLock lm (lock);
- const double ret = beat_at_pulse_locked (_metrics, quarter_note / 4.0);
+ return quarter_notes_between_frames_locked (_metrics, start, end);
+}
- return ret;
+double
+TempoMap::quarter_notes_between_frames_locked (const Metrics& metrics, const framecnt_t start, const framecnt_t end) const
+{
+ const TempoSection* prev_t = 0;
+
+ for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
+ TempoSection* t;
+
+ if ((*i)->is_tempo()) {
+ t = static_cast<TempoSection*> (*i);
+ if (!t->active()) {
+ continue;
+ }
+ if (prev_t && t->frame() > start) {
+ break;
+ }
+ prev_t = t;
+ }
+ }
+ assert (prev_t);
+ const double start_qn = prev_t->pulse_at_frame (start);
+
+ for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
+ TempoSection* t;
+
+ if ((*i)->is_tempo()) {
+ t = static_cast<TempoSection*> (*i);
+ if (!t->active()) {
+ continue;
+ }
+ if (prev_t && t->frame() > end) {
+ break;
+ }
+ prev_t = t;
+ }
+ }
+ const double end_qn = prev_t->pulse_at_frame (end);
+
+ return (end_qn - start_qn) * 4.0;
}
bool
}
if (prev_t) {
/* check ordering */
- if ((t->frame() <= prev_t->frame()) || (t->pulse() <= prev_t->pulse())) {
+ if ((t->minute() <= prev_t->minute()) || (t->pulse() <= prev_t->pulse())) {
return false;
}
/* precision check ensures tempo and frames align.*/
- if (t->frame() != prev_t->frame_at_tempo (t->pulses_per_minute(), t->pulse(), _frame_rate)) {
+ if (t->frame() != frame_at_minute (prev_t->minute_at_ntpm (prev_t->end_note_types_per_minute(), t->pulse()))) {
if (!t->locked_to_meter()) {
return false;
}
/* gradient limit - who knows what it should be?
things are also ok (if a little chaotic) without this
*/
- if (fabs (prev_t->c_func()) > 1000.0) {
- //std::cout << "c : " << prev_t->c_func() << std::endl;
+ if (fabs (prev_t->c()) > 1000.0) {
+ //std::cout << "c : " << prev_t->c() << std::endl;
return false;
}
}
if (!(*i)->is_tempo()) {
m = static_cast<MeterSection*> (*i);
if (prev_m && m->position_lock_style() == AudioTime) {
- const TempoSection* t = &tempo_section_at_frame_locked (metrics, m->frame() - 1);
- const framepos_t nascent_m_frame = t->frame_at_pulse (m->pulse(), _frame_rate);
+ const TempoSection* t = &tempo_section_at_minute_locked (metrics, minute_at_frame (m->frame() - 1));
+ const framepos_t nascent_m_frame = frame_at_minute (t->minute_at_pulse (m->pulse()));
/* Here we check that a preceding section of music doesn't overlap a subsequent one.
- It is complicated by the fact that audio locked meters represent a discontinuity in the pulse
- (they place an exact pulse at a particular time expressed only in frames).
- This has the effect of shifting the calculated frame at the meter pulse (wrt the previous section of music)
- away from its actual frame (which is now the frame location of the exact pulse).
- This can result in the calculated frame (from the previous musical section)
- differing from the exact frame by one sample.
- Allow for that.
*/
- if (t && (nascent_m_frame > m->frame() + 1 || nascent_m_frame < 0)) {
+ if (t && (nascent_m_frame > m->frame() || nascent_m_frame < 0)) {
return false;
}
}
}
bool
-TempoMap::set_active_tempos (const Metrics& metrics, const framepos_t& frame)
+TempoMap::set_active_tempi (const Metrics& metrics, const framepos_t& frame)
{
for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
TempoSection* t;
if ((*i)->is_tempo()) {
t = static_cast<TempoSection*> (*i);
- if (!t->movable()) {
+ if (t->locked_to_meter()) {
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;
+ } else if (t->position_lock_style() == AudioTime) {
+ if (t->frame() < frame) {
+ t->set_active (false);
+ t->set_pulse (-1.0);
+ } else if (t->frame() > frame) {
+ t->set_active (true);
+ } else if (t->frame() == frame) {
+ return false;
+ }
}
}
}
}
bool
-TempoMap::solve_map_frame (Metrics& imaginary, TempoSection* section, const framepos_t& frame)
+TempoMap::solve_map_minute (Metrics& imaginary, TempoSection* section, const double& minute)
{
TempoSection* prev_t = 0;
TempoSection* section_prev = 0;
- framepos_t first_m_frame = 0;
+ double first_m_minute = 0.0;
+ const bool sml = section->locked_to_meter();
/* can't move a tempo before the first meter */
for (Metrics::iterator i = imaginary.begin(); i != imaginary.end(); ++i) {
MeterSection* m;
if (!(*i)->is_tempo()) {
m = static_cast<MeterSection*> (*i);
- if (!m->movable()) {
- first_m_frame = m->frame();
+ if (m->initial()) {
+ first_m_minute = m->minute();
break;
}
}
}
- if (section->movable() && frame <= first_m_frame) {
+ if (!section->initial() && minute <= first_m_minute) {
return false;
}
section->set_active (true);
- section->set_frame (frame);
+ section->set_minute (minute);
for (Metrics::iterator i = imaginary.begin(); i != imaginary.end(); ++i) {
TempoSection* t;
if (!t->active()) {
continue;
}
+
if (prev_t) {
+
if (t == section) {
+ continue;
+ }
+
+ if (t->frame() == frame_at_minute (minute)) {
+ return false;
+ }
+
+ const bool tlm = t->position_lock_style() == MusicTime;
+
+ if (prev_t && !section_prev && ((sml && tlm && t->pulse() > section->pulse()) || (!tlm && t->minute() > minute))) {
section_prev = prev_t;
- if (t->locked_to_meter()) {
- prev_t = t;
+
+ section_prev->set_c (section_prev->compute_c_minute (section_prev->end_note_types_per_minute(), minute));
+ if (!section->locked_to_meter()) {
+ section->set_pulse (section_prev->pulse_at_ntpm (section_prev->end_note_types_per_minute(), minute));
}
- continue;
+ prev_t = section;
}
+
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));
+ prev_t->set_c (prev_t->compute_c_pulse (prev_t->end_note_types_per_minute(), t->pulse()));
+ t->set_minute (prev_t->minute_at_ntpm (prev_t->end_note_types_per_minute(), t->pulse()));
} else {
- prev_t->set_c_func (prev_t->compute_c_func_frame (t->pulses_per_minute(), t->frame(), _frame_rate));
+ prev_t->set_c (prev_t->compute_c_minute (prev_t->end_note_types_per_minute(), t->minute()));
if (!t->locked_to_meter()) {
- t->set_pulse (prev_t->pulse_at_frame (t->frame(), _frame_rate));
+ t->set_pulse (prev_t->pulse_at_ntpm (prev_t->end_note_types_per_minute(), t->minute()));
}
}
}
}
}
- if (section_prev) {
- section_prev->set_c_func (section_prev->compute_c_func_frame (section->pulses_per_minute(), frame, _frame_rate));
- if (!section->locked_to_meter()) {
- section->set_pulse (section_prev->pulse_at_frame (frame, _frame_rate));
- }
- }
-
#if (0)
recompute_tempi (imaginary);
if (!t->active()) {
continue;
}
- if (!t->movable()) {
+ if (t->initial()) {
t->set_pulse (0.0);
prev_t = t;
continue;
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));
+ prev_t->set_c (prev_t->compute_c_pulse (prev_t->end_note_types_per_minute(), t->pulse()));
+ t->set_minute (prev_t->minute_at_ntpm (prev_t->end_note_types_per_minute(), t->pulse()));
} else {
- prev_t->set_c_func (prev_t->compute_c_func_frame (t->pulses_per_minute(), t->frame(), _frame_rate));
+ prev_t->set_c (prev_t->compute_c_minute (prev_t->end_note_types_per_minute(), t->minute()));
if (!t->locked_to_meter()) {
- t->set_pulse (prev_t->pulse_at_frame (t->frame(), _frame_rate));
+ t->set_pulse (prev_t->pulse_at_ntpm (prev_t->end_note_types_per_minute(), t->minute()));
}
}
}
}
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));
+ section_prev->set_c (section_prev->compute_c_pulse (section_prev->end_note_types_per_minute(), pulse));
+ section->set_minute (section_prev->minute_at_ntpm (section_prev->end_note_types_per_minute(), pulse));
}
#if (0)
}
bool
-TempoMap::solve_map_frame (Metrics& imaginary, MeterSection* section, const framepos_t& frame)
+TempoMap::solve_map_minute (Metrics& imaginary, MeterSection* section, const double& minute)
{
- /* disallow moving first meter past any subsequent one, and any movable meter before the first one */
- const MeterSection* other = &meter_section_at_frame_locked (imaginary, frame);
- if ((!section->movable() && other->movable()) || (!other->movable() && section->movable() && other->frame() >= frame)) {
+ /* disallow moving first meter past any subsequent one, and any initial meter before the first one */
+ const MeterSection* other = &meter_section_at_minute_locked (imaginary, minute);
+ if ((section->initial() && !other->initial()) || (other->initial() && !section->initial() && other->minute() >= minute)) {
return false;
}
- if (!section->movable()) {
+ if (section->initial()) {
/* lock the first tempo to our first meter */
- if (!set_active_tempos (imaginary, frame)) {
+ if (!set_active_tempi (imaginary, frame_at_minute (minute))) {
return false;
}
}
TempoSection* t;
if ((*ii)->is_tempo()) {
t = static_cast<TempoSection*> (*ii);
- if ((t->locked_to_meter() || !t->movable()) && t->frame() == section->frame()) {
+ if (t->locked_to_meter() && t->frame() == section->frame()) {
meter_locked_tempo = t;
break;
}
if (!(*i)->is_tempo()) {
m = static_cast<MeterSection*> (*i);
if (m == section){
- if (prev_m && section->movable()) {
- const double beats = (pulse_at_frame_locked (imaginary, frame) - prev_m->pulse()) * prev_m->note_divisor();
+ if (prev_m && !section->initial()) {
+ const double beats = (pulse_at_minute_locked (imaginary, minute) - prev_m->pulse()) * prev_m->note_divisor();
if (beats + prev_m->beat() < section->beat()) {
- /* set the frame/pulse corresponding to its musical position,
+ /* set the section pulse according to its musical position,
* as an earlier time than this has been requested.
*/
const double new_pulse = ((section->beat() - prev_m->beat())
/ prev_m->note_divisor()) + prev_m->pulse();
- const framepos_t smallest_frame = frame_at_pulse_locked (future_map, new_pulse);
-
- if ((solved = solve_map_frame (future_map, tempo_copy, smallest_frame))) {
- meter_locked_tempo->set_pulse (new_pulse);
- solve_map_frame (imaginary, meter_locked_tempo, smallest_frame);
- section->set_frame (smallest_frame);
+ tempo_copy->set_position_lock_style (MusicTime);
+ if ((solved = solve_map_pulse (future_map, tempo_copy, new_pulse))) {
+ meter_locked_tempo->set_position_lock_style (MusicTime);
+ section->set_position_lock_style (MusicTime);
section->set_pulse (new_pulse);
+ solve_map_pulse (imaginary, meter_locked_tempo, new_pulse);
+ meter_locked_tempo->set_position_lock_style (AudioTime);
+ section->set_position_lock_style (AudioTime);
+ section->set_minute (meter_locked_tempo->minute());
+
} else {
solved = false;
}
}
} else {
/* all is ok. set section's locked tempo if allowed.
- possibly disallowed if there is an adjacent audio-locked tempo.
+ possibly disallow if there is an adjacent audio-locked tempo.
XX this check could possibly go. its never actually happened here.
*/
- MeterSection* meter_copy = const_cast<MeterSection*> (&meter_section_at_frame_locked (future_map, section->frame()));
- meter_copy->set_frame (frame);
+ MeterSection* meter_copy = const_cast<MeterSection*>
+ (&meter_section_at_minute_locked (future_map, section->minute()));
- if ((solved = solve_map_frame (future_map, tempo_copy, frame))) {
- section->set_frame (frame);
+ meter_copy->set_minute (minute);
+
+ if ((solved = solve_map_minute (future_map, tempo_copy, minute))) {
+ section->set_minute (minute);
meter_locked_tempo->set_pulse (((section->beat() - prev_m->beat())
/ prev_m->note_divisor()) + prev_m->pulse());
- solve_map_frame (imaginary, meter_locked_tempo, frame);
+ solve_map_minute (imaginary, meter_locked_tempo, minute);
} else {
solved = false;
}
}
}
} else {
- /* not movable (first meter atm) */
+ /* initial (first meter atm) */
- tempo_copy->set_frame (frame);
+ tempo_copy->set_minute (minute);
tempo_copy->set_pulse (0.0);
- if ((solved = solve_map_frame (future_map, tempo_copy, frame))) {
- section->set_frame (frame);
- meter_locked_tempo->set_frame (frame);
+ if ((solved = solve_map_minute (future_map, tempo_copy, minute))) {
+ section->set_minute (minute);
+ meter_locked_tempo->set_minute (minute);
meter_locked_tempo->set_pulse (0.0);
- solve_map_frame (imaginary, meter_locked_tempo, frame);
+ solve_map_minute (imaginary, meter_locked_tempo, minute);
} else {
solved = false;
}
MeterSection* m;
if (!(*i)->is_tempo()) {
m = static_cast<MeterSection*> (*i);
+
+ if (m == section) {
+ continue;
+ }
+
pair<double, BBT_Time> b_bbt;
double new_pulse = 0.0;
if (prev_m && m->bbt().bars > when.bars && !section_prev){
section_prev = prev_m;
+
const double beats = (when.bars - section_prev->bbt().bars) * section_prev->divisions_per_bar();
const double pulse = (beats / section_prev->note_divisor()) + section_prev->pulse();
pair<double, BBT_Time> b_bbt = make_pair (beats + section_prev->beat(), when);
section->set_beat (b_bbt);
section->set_pulse (pulse);
- section->set_frame (frame_at_pulse_locked (imaginary, pulse));
+ section->set_minute (minute_at_pulse_locked (imaginary, pulse));
prev_m = section;
- continue;
}
if (m->position_lock_style() == AudioTime) {
TempoSection* t;
if ((*ii)->is_tempo()) {
t = static_cast<TempoSection*> (*ii);
- if ((t->locked_to_meter() || !t->movable()) && t->frame() == m->frame()) {
+ if (t->locked_to_meter() && t->frame() == m->frame()) {
meter_locked_tempo = t;
break;
}
}
if (prev_m) {
- const double beats = ((m->bbt().bars - prev_m->bbt().bars) * prev_m->divisions_per_bar());
+ double beats = ((m->bbt().bars - prev_m->bbt().bars) * prev_m->divisions_per_bar());
if (beats + prev_m->beat() != m->beat()) {
/* tempo/ meter change caused a change in beat (bar). */
+
+ /* the user has requested that the previous section of music overlaps this one.
+ we have no choice but to change the bar number here, as being locked to audio means
+ we must stay where we are on the timeline.
+ */
+ beats = m->beat() - prev_m->beat();
b_bbt = make_pair (beats + prev_m->beat()
, BBT_Time ((beats / prev_m->divisions_per_bar()) + prev_m->bbt().bars, 1, 0));
new_pulse = prev_m->pulse() + (beats / prev_m->note_divisor());
- } else if (m->movable()) {
+
+ } else if (!m->initial()) {
b_bbt = make_pair (m->beat(), m->bbt());
new_pulse = prev_m->pulse() + (beats / prev_m->note_divisor());
}
new_pulse = (beats / prev_m->note_divisor()) + prev_m->pulse();
m->set_beat (b_bbt);
m->set_pulse (new_pulse);
- m->set_frame (frame_at_pulse_locked (imaginary, new_pulse));
+ m->set_minute (minute_at_pulse_locked (imaginary, new_pulse));
}
prev_m = m;
section->set_beat (b_bbt);
section->set_pulse (pulse);
- section->set_frame (frame_at_pulse_locked (imaginary, pulse));
+ section->set_minute (minute_at_pulse_locked (imaginary, pulse));
}
MetricSectionSorter cmp;
/** answers the question "is this a valid beat position for this tempo section?".
* it returns true if the tempo section can be moved to the requested bbt position,
* leaving the tempo map in a solved state.
- * @param section the tempo section to be moved
+ * @param ts the tempo section to be moved
* @param bbt the requested new position for the tempo section
* @return true if the tempo section can be moved to the position, otherwise false.
*/
* This is for a gui that needs to know the pulse or 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 bbt - the bbt where the altered tempo will fall
+* @param bbt - the BBT time where the altered tempo will fall
* @return returns - the position in pulses and frames (as a pair) where the new tempo section will lie.
*/
pair<double, framepos_t>
const double beat = beat_at_bbt_locked (future_map, bbt);
+ if (section->position_lock_style() == AudioTime) {
+ tempo_copy->set_position_lock_style (MusicTime);
+ }
+
if (solve_map_pulse (future_map, tempo_copy, pulse_at_beat_locked (future_map, beat))) {
ret.first = tempo_copy->pulse();
ret.second = tempo_copy->frame();
return ret;
}
+/** moves a TempoSection to a specified position.
+ * @param ts - the section to be moved
+ * @param frame - the new position in frames for the tempo
+ * @param sub_num - the snap division to use if using musical time.
+ *
+ * if sub_num is non-zero, the frame position is used to calculate an exact
+ * musical position.
+ * sub_num | effect
+ * -1 | snap to bars (meter-based)
+ * 0 | no snap - use audio frame for musical position
+ * 1 | snap to meter-based (BBT) beat
+ * >1 | snap to quarter-note subdivision (i.e. 4 will snap to sixteenth notes)
+ *
+ * this follows the snap convention in the gui.
+ * if sub_num is zero, the musical position will be taken from the supplied frame.
+ */
void
-TempoMap::gui_move_tempo (TempoSection* ts, const framepos_t& frame, const int& sub_num)
+TempoMap::gui_set_tempo_position (TempoSection* ts, const framepos_t& frame, const int& sub_num)
{
Metrics future_map;
tempo_copy->set_position_lock_style (AudioTime);
- if (solve_map_frame (future_map, tempo_copy, frame)) {
+ if (solve_map_minute (future_map, tempo_copy, minute_at_frame (frame))) {
const double beat = exact_beat_at_frame_locked (future_map, frame, sub_num);
const double pulse = pulse_at_beat_locked (future_map, beat);
Glib::Threads::RWLock::WriterLock lm (lock);
TempoSection* tempo_copy = copy_metrics_and_point (_metrics, future_map, ts);
- if (solve_map_frame (future_map, tempo_copy, frame)) {
+ if (solve_map_minute (future_map, tempo_copy, minute_at_frame (frame))) {
if (sub_num != 0) {
/* We're moving the object that defines the grid while snapping to it...
* Placing the ts at the beat corresponding to the requested frame may shift the
* grid in such a way that the mouse is left hovering over a completerly different division,
* causing jittering when the mouse next moves (esp. large tempo deltas).
- * To avoid this, place the ts at the requested frame in a dummy map
- * then find the closest beat subdivision to that frame in the dummy.
+ *
* This alters the snap behaviour slightly in that we snap to beat divisions
* in the future map rather than the existing one.
*/
- const double beat = exact_beat_at_frame_locked (future_map, frame, sub_num);
- const double pulse = pulse_at_beat_locked (future_map, beat);
-
- if (solve_map_pulse (future_map, tempo_copy, pulse)) {
- /* snapping to a grid. force MusicTime temporarily. */
- ts->set_position_lock_style (MusicTime);
- solve_map_pulse (_metrics, ts, pulse);
- ts->set_position_lock_style (AudioTime);
+ const double qn = exact_qn_at_frame_locked (future_map, frame, sub_num);
+ const framepos_t snapped_frame = frame_at_minute (minute_at_pulse_locked (future_map, qn / 4.0));
+ if (solve_map_minute (future_map, tempo_copy, minute_at_frame (snapped_frame))) {
+ solve_map_minute (_metrics, ts, minute_at_frame (snapped_frame));
+ ts->set_pulse (qn / 4.0);
recompute_meters (_metrics);
}
} else {
- solve_map_frame (_metrics, ts, frame);
+ solve_map_minute (_metrics, ts, minute_at_frame (frame));
recompute_meters (_metrics);
}
}
++d;
}
- MetricPositionChanged (); // Emit Signal
+ MetricPositionChanged (PropertyChange ()); // Emit Signal
}
+/** moves a MeterSection to a specified position.
+ * @param ms - the section to be moved
+ * @param frame - the new position in frames for the meter
+ *
+ * as a meter cannot snap to anything but bars,
+ * the supplied frame is rounded to the nearest bar, possibly
+ * leaving the meter position unchanged.
+ */
void
-TempoMap::gui_move_meter (MeterSection* ms, const framepos_t& frame)
+TempoMap::gui_set_meter_position (MeterSection* ms, const framepos_t& frame)
{
Metrics future_map;
Glib::Threads::RWLock::WriterLock lm (lock);
MeterSection* copy = copy_metrics_and_point (_metrics, future_map, ms);
- if (solve_map_frame (future_map, copy, frame)) {
- solve_map_frame (_metrics, ms, frame);
+ if (solve_map_minute (future_map, copy, minute_at_frame (frame))) {
+ solve_map_minute (_metrics, ms, minute_at_frame (frame));
recompute_tempi (_metrics);
}
}
Glib::Threads::RWLock::WriterLock lm (lock);
MeterSection* copy = copy_metrics_and_point (_metrics, future_map, ms);
- const double beat = beat_at_frame_locked (_metrics, frame);
+ const double beat = beat_at_minute_locked (_metrics, minute_at_frame (frame));
const Timecode::BBT_Time bbt = bbt_at_beat_locked (_metrics, beat);
if (solve_map_bbt (future_map, copy, bbt)) {
++d;
}
- MetricPositionChanged (); // Emit Signal
+ MetricPositionChanged (PropertyChange ()); // Emit Signal
}
bool
-TempoMap::gui_change_tempo (TempoSection* ts, const Tempo& bpm)
+TempoMap::gui_change_tempo (TempoSection* ts, const Tempo& bpm, bool change_end)
{
Metrics future_map;
bool can_solve = false;
{
Glib::Threads::RWLock::WriterLock lm (lock);
TempoSection* tempo_copy = copy_metrics_and_point (_metrics, future_map, ts);
- tempo_copy->set_beats_per_minute (bpm.beats_per_minute());
+
+ if (change_end && tempo_copy->type() == TempoSection::Constant) {
+ tempo_copy->set_end_note_types_per_minute (bpm.note_types_per_minute());
+ tempo_copy->set_note_types_per_minute (bpm.note_types_per_minute());
+ } else if (change_end) {
+ tempo_copy->set_end_note_types_per_minute (bpm.note_types_per_minute());
+ } else {
+ tempo_copy->set_note_types_per_minute (bpm.note_types_per_minute());
+ }
+
recompute_tempi (future_map);
if (check_solved (future_map)) {
- ts->set_beats_per_minute (bpm.beats_per_minute());
+ if (change_end && ts->type() == TempoSection::Constant) {
+ ts->set_end_note_types_per_minute (bpm.note_types_per_minute());
+ ts->set_note_types_per_minute (bpm.note_types_per_minute());
+ } else if (change_end) {
+ ts->set_end_note_types_per_minute (bpm.note_types_per_minute());
+ } else {
+ ts->set_note_types_per_minute (bpm.note_types_per_minute());
+ }
+
recompute_map (_metrics);
can_solve = true;
}
++d;
}
if (can_solve) {
- MetricPositionChanged (); // Emit Signal
+ MetricPositionChanged (PropertyChange ()); // Emit Signal
}
+
return can_solve;
}
void
-TempoMap::gui_dilate_tempo (TempoSection* ts, const framepos_t& frame, const framepos_t& end_frame, const double& pulse)
+TempoMap::gui_stretch_tempo (TempoSection* ts, const framepos_t frame, const framepos_t end_frame)
{
/*
Ts (future prev_t) Tnext
| |
| [drag^] |
|----------|----------
- e_f pulse(frame)
+ e_f qn_beats(frame)
*/
Metrics future_map;
}
TempoSection* prev_t = copy_metrics_and_point (_metrics, future_map, ts);
- TempoSection* prev_to_prev_t = 0;
- const frameoffset_t fr_off = end_frame - frame;
- if (prev_t && prev_t->pulse() > 0.0) {
- prev_to_prev_t = const_cast<TempoSection*>(&tempo_section_at_frame_locked (future_map, prev_t->frame() - 1));
+ if (!prev_t) {
+ return;
}
- TempoSection* next_t = 0;
- for (Metrics::iterator i = future_map.begin(); i != future_map.end(); ++i) {
- TempoSection* t = 0;
- if ((*i)->is_tempo()) {
- t = static_cast<TempoSection*> (*i);
- if (t->frame() > ts->frame()) {
- next_t = t;
- break;
- }
- }
- }
/* minimum allowed measurement distance in frames */
- const framepos_t min_dframe = 2;
-
- /* the change in frames is the result of changing the slope of at most 2 previous tempo sections.
- constant to constant is straightforward, as the tempo prev to prev_t has constant slope.
- */
- double contribution = 0.0;
-
- if (next_t && prev_to_prev_t && prev_to_prev_t->type() == TempoSection::Ramp) {
- contribution = (prev_t->frame() - prev_to_prev_t->frame()) / (double) (next_t->frame() - prev_to_prev_t->frame());
- }
-
- const frameoffset_t prev_t_frame_contribution = fr_off - (contribution * (double) fr_off);
-
- const double start_pulse = prev_t->pulse_at_frame (frame, _frame_rate);
- const double end_pulse = prev_t->pulse_at_frame (end_frame, _frame_rate);
+ framepos_t const min_dframe = 2;
double new_bpm;
- if (prev_t->type() == TempoSection::Constant || prev_t->c_func() == 0.0) {
-
- if (prev_t->position_lock_style() == MusicTime) {
- if (prev_to_prev_t && prev_to_prev_t->type() == TempoSection::Ramp) {
- if (frame > prev_to_prev_t->frame() + min_dframe && (frame + prev_t_frame_contribution) > prev_to_prev_t->frame() + min_dframe) {
-
- new_bpm = prev_t->beats_per_minute() * ((frame - prev_to_prev_t->frame())
- / (double) ((frame + prev_t_frame_contribution) - prev_to_prev_t->frame()));
- } else {
- new_bpm = prev_t->beats_per_minute();
- }
- } else {
- /* prev to prev is irrelevant */
-
- if (start_pulse > prev_t->pulse() && end_pulse > prev_t->pulse()) {
- new_bpm = prev_t->beats_per_minute() * ((start_pulse - prev_t->pulse()) / (end_pulse - prev_t->pulse()));
- } else {
- new_bpm = prev_t->beats_per_minute();
- }
- }
- } else {
- /* AudioTime */
- if (prev_to_prev_t && prev_to_prev_t->type() == TempoSection::Ramp) {
- if (frame > prev_to_prev_t->frame() + min_dframe && end_frame > prev_to_prev_t->frame() + min_dframe) {
-
- new_bpm = prev_t->beats_per_minute() * ((frame - prev_to_prev_t->frame())
- / (double) ((end_frame) - prev_to_prev_t->frame()));
- } else {
- new_bpm = prev_t->beats_per_minute();
- }
- } else {
- /* prev_to_prev_t is irrelevant */
+ if (frame > prev_t->frame() + min_dframe && end_frame > prev_t->frame() + min_dframe) {
- if (frame > prev_t->frame() + min_dframe && end_frame > prev_t->frame() + min_dframe) {
- new_bpm = prev_t->beats_per_minute() * ((frame - prev_t->frame()) / (double) (end_frame - prev_t->frame()));
- } else {
- new_bpm = prev_t->beats_per_minute();
- }
- }
- }
+ new_bpm = prev_t->note_types_per_minute() * ((frame - prev_t->frame())
+ / (double) (end_frame - prev_t->frame()));
} else {
-
- double frame_ratio = 1.0;
- double pulse_ratio = 1.0;
- const framepos_t pulse_pos = prev_t->frame_at_pulse (pulse, _frame_rate);
-
- if (prev_to_prev_t) {
- if (pulse_pos > prev_to_prev_t->frame() + min_dframe && (pulse_pos - fr_off) > prev_to_prev_t->frame() + min_dframe) {
- frame_ratio = (((pulse_pos - fr_off) - prev_to_prev_t->frame()) / (double) ((pulse_pos) - prev_to_prev_t->frame()));
- }
- if (end_pulse > prev_to_prev_t->pulse() && start_pulse > prev_to_prev_t->pulse()) {
- pulse_ratio = ((start_pulse - prev_to_prev_t->pulse()) / (end_pulse - prev_to_prev_t->pulse()));
- }
- } else {
- if (pulse_pos > prev_t->frame() + min_dframe && (pulse_pos - fr_off) > prev_t->frame() + min_dframe) {
- frame_ratio = (((pulse_pos - fr_off) - prev_t->frame()) / (double) ((pulse_pos) - prev_t->frame()));
- }
- pulse_ratio = (start_pulse / end_pulse);
- }
- new_bpm = prev_t->beats_per_minute() * (pulse_ratio * frame_ratio);
+ new_bpm = prev_t->note_types_per_minute();
}
+ std::cout << "new bpm : " << new_bpm << std::endl;
+ new_bpm = min (new_bpm, (double) 1000.0);
+
/* don't clamp and proceed here.
testing has revealed that this can go negative,
which is an entirely different thing to just being too low.
*/
+
if (new_bpm < 0.5) {
- return;
+ goto out;
}
- new_bpm = min (new_bpm, (double) 1000.0);
- prev_t->set_beats_per_minute (new_bpm);
+
+ if (prev_t && prev_t->type() == TempoSection::Ramp) {
+ prev_t->set_note_types_per_minute (new_bpm);
+ } else {
+ prev_t->set_end_note_types_per_minute (new_bpm);
+ prev_t->set_note_types_per_minute (new_bpm);
+ }
+
recompute_tempi (future_map);
recompute_meters (future_map);
if (check_solved (future_map)) {
- ts->set_beats_per_minute (new_bpm);
+ if (prev_t && prev_t->type() == TempoSection::Ramp) {
+ ts->set_note_types_per_minute (new_bpm);
+ } else {
+ ts->set_end_note_types_per_minute (new_bpm);
+ ts->set_note_types_per_minute (new_bpm);
+ }
recompute_tempi (_metrics);
recompute_meters (_metrics);
}
}
+ MetricPositionChanged (PropertyChange ()); // Emit Signal
+
+out:
Metrics::const_iterator d = future_map.begin();
while (d != future_map.end()) {
delete (*d);
++d;
}
- MetricPositionChanged (); // Emit Signal
}
-
-/** Returns the exact beat subdivision closest to the supplied frame, possibly returning a negative value.
- * @param frame The session frame position.
- * @param sub_num The requested beat subdivision to use when rounding the frame position.
- * @return The beat position of the supplied frame.
- * If the supplied frame lies before the first meter, the return will be negative.
- * The returned beat is obtained using the first meter and the continuation of the tempo curve (backwards).
- *
- * This function uses both tempo and meter.
- */
-double
-TempoMap::exact_beat_at_frame (const framepos_t& frame, const int32_t sub_num)
+void
+TempoMap::gui_stretch_tempo_end (TempoSection* ts, const framepos_t frame, const framepos_t end_frame)
{
- Glib::Threads::RWLock::ReaderLock lm (lock);
+ /*
+ Ts (future prev_t) Tnext
+ | |
+ | [drag^] |
+ |----------|----------
+ e_f qn_beats(frame)
+ */
- return exact_beat_at_frame_locked (_metrics, frame, sub_num);
-}
+ Metrics future_map;
-double
-TempoMap::exact_beat_at_frame_locked (const Metrics& metrics, const framepos_t& frame, const int32_t sub_num)
-{
- double beat = beat_at_frame_locked (metrics, frame);
+ {
+ Glib::Threads::RWLock::WriterLock lm (lock);
- if (sub_num > 1) {
- beat = floor (beat) + (floor (((beat - floor (beat)) * (double) sub_num) + 0.5) / sub_num);
- } else if (sub_num == 1) {
- /* snap to beat */
- beat = floor (beat + 0.5);
- } else if (sub_num == -1) {
- /* snap to bar */
- Timecode::BBT_Time bbt = bbt_at_beat_locked (metrics, beat);
- bbt.beats = 1;
- bbt.ticks = 0;
+ if (!ts) {
+ return;
+ }
- const double prev_b = beat_at_bbt_locked (_metrics, bbt);
- ++bbt.bars;
- const double next_b = beat_at_bbt_locked (_metrics, bbt);
+ TempoSection* prev_t = copy_metrics_and_point (_metrics, future_map, ts);
- if ((beat - prev_b) > (next_b - prev_b) / 2.0) {
- beat = next_b;
+/*
+ TempoSection* next_t = 0;
+ for (Metrics::const_iterator i = future_map.begin(); i != future_map.end(); ++i) {
+ if ((*i)->is_tempo() && (*i)->minute() > prev_t->minute()) {
+ next_t = static_cast<TempoSection*> (*i);
+ break;
+ }
+ }
+
+ if (!next_t) {
+ return;
+ }
+*/
+ if (!prev_t) {
+ return;
+ }
+
+
+ /* minimum allowed measurement distance in frames */
+ framepos_t const min_dframe = 2;
+ double new_bpm;
+
+ if (frame > prev_t->frame() + min_dframe && end_frame > prev_t->frame() + min_dframe) {
+ new_bpm = prev_t->end_note_types_per_minute() * ((frame - prev_t->frame())
+ / (double) (end_frame - prev_t->frame()));
} else {
- beat = prev_b;
+ new_bpm = prev_t->end_note_types_per_minute();
+ }
+
+ new_bpm = min (new_bpm, (double) 1000.0);
+
+ if (new_bpm < 0.5) {
+ goto out;
+ }
+
+ prev_t->set_end_note_types_per_minute (new_bpm);
+
+ recompute_tempi (future_map);
+ recompute_meters (future_map);
+
+ if (check_solved (future_map)) {
+ ts->set_end_note_types_per_minute (new_bpm);
+
+ recompute_tempi (_metrics);
+ recompute_meters (_metrics);
}
}
- return beat;
+ MetricPositionChanged (PropertyChange ()); // Emit Signal
+
+out:
+ Metrics::const_iterator d = future_map.begin();
+ while (d != future_map.end()) {
+ delete (*d);
+ ++d;
+ }
+
}
+bool
+TempoMap::gui_twist_tempi (TempoSection* ts, const Tempo& bpm, const framepos_t frame, const framepos_t end_frame)
+{
+ TempoSection* next_t = 0;
+ TempoSection* next_to_next_t = 0;
+ Metrics future_map;
+ bool can_solve = false;
+
+ /* minimum allowed measurement distance in frames */
+ framepos_t const min_dframe = 2;
+
+ {
+ Glib::Threads::RWLock::WriterLock lm (lock);
+ if (!ts) {
+ return false;
+ }
+
+ TempoSection* tempo_copy = copy_metrics_and_point (_metrics, future_map, ts);
+ TempoSection* prev_to_prev_t = 0;
+ const frameoffset_t fr_off = end_frame - frame;
+
+ if (!tempo_copy) {
+ return false;
+ }
+
+ if (tempo_copy->pulse() > 0.0) {
+ prev_to_prev_t = const_cast<TempoSection*>(&tempo_section_at_minute_locked (future_map, minute_at_frame (tempo_copy->frame() - 1)));
+ }
+
+ for (Metrics::const_iterator i = future_map.begin(); i != future_map.end(); ++i) {
+ if ((*i)->is_tempo() && (*i)->minute() > tempo_copy->minute()) {
+ next_t = static_cast<TempoSection*> (*i);
+ break;
+ }
+ }
+
+ if (!next_t) {
+ return false;
+ }
+
+ for (Metrics::const_iterator i = future_map.begin(); i != future_map.end(); ++i) {
+ if ((*i)->is_tempo() && (*i)->minute() > next_t->minute()) {
+ next_to_next_t = static_cast<TempoSection*> (*i);
+ break;
+ }
+ }
+
+ if (!next_to_next_t) {
+ std::cout << "no next to next t" << std::endl;
+ return false;
+ }
+
+ double prev_contribution = 0.0;
+
+ if (next_t && prev_to_prev_t && prev_to_prev_t->type() == TempoSection::Ramp) {
+ prev_contribution = (tempo_copy->frame() - prev_to_prev_t->frame()) / (double) (next_t->frame() - prev_to_prev_t->frame());
+ }
+
+ const frameoffset_t tempo_copy_frame_contribution = fr_off - (prev_contribution * (double) fr_off);
+
+
+ framepos_t old_tc_pos = tempo_copy->frame();
+ framepos_t old_next_pos = next_t->frame();
+ double old_next_minute = next_t->minute();
+ framepos_t old_next_to_next_pos = next_to_next_t->frame();
+ double old_next_to_next_minute = next_to_next_t->minute();
+
+ double new_bpm;
+ double new_next_bpm;
+ double new_copy_end_bpm;
+
+ if (frame > prev_to_prev_t->frame() + min_dframe && (frame + tempo_copy_frame_contribution) > prev_to_prev_t->frame() + min_dframe) {
+ new_bpm = tempo_copy->note_types_per_minute() * ((frame - tempo_copy->frame())
+ / (double) (end_frame - tempo_copy->frame()));
+ } else {
+ new_bpm = tempo_copy->note_types_per_minute();
+ }
+
+ /* don't clamp and proceed here.
+ testing has revealed that this can go negative,
+ which is an entirely different thing to just being too low.
+ */
+ if (new_bpm < 0.5) {
+ return false;
+ }
+
+ new_bpm = min (new_bpm, (double) 1000.0);
+
+ tempo_copy->set_note_types_per_minute (new_bpm);
+ if (tempo_copy->type() == TempoSection::Constant) {
+ tempo_copy->set_end_note_types_per_minute (new_bpm);
+ }
+ recompute_tempi (future_map);
+
+ if (check_solved (future_map)) {
+
+ if (!next_t) {
+ return false;
+ }
+ ts->set_note_types_per_minute (new_bpm);
+ if (ts->type() == TempoSection::Constant) {
+ ts->set_end_note_types_per_minute (new_bpm);
+ }
+ recompute_map (_metrics);
+ can_solve = true;
+ }
+
+ if (next_t->type() == TempoSection::Constant || next_t->c() == 0.0) {
+ if (frame > prev_to_prev_t->frame() + min_dframe && end_frame > prev_to_prev_t->frame() + min_dframe) {
+
+ new_next_bpm = next_t->note_types_per_minute() * ((next_to_next_t->minute() - old_next_minute)
+ / (double) ((old_next_to_next_minute) - old_next_minute));
+
+ } else {
+ new_next_bpm = next_t->note_types_per_minute();
+ }
+
+ next_t->set_note_types_per_minute (new_next_bpm);
+ recompute_tempi (future_map);
+
+ if (check_solved (future_map)) {
+ for (Metrics::const_iterator i = _metrics.begin(); i != _metrics.end(); ++i) {
+ if ((*i)->is_tempo() && (*i)->minute() > ts->minute()) {
+ next_t = static_cast<TempoSection*> (*i);
+ break;
+ }
+ }
+
+ if (!next_t) {
+ return false;
+ }
+ next_t->set_note_types_per_minute (new_next_bpm);
+ recompute_map (_metrics);
+ can_solve = true;
+ }
+ } else {
+ double next_frame_ratio = 1.0;
+ double copy_frame_ratio = 1.0;
+
+ if (next_to_next_t) {
+ next_frame_ratio = (next_to_next_t->frame() - old_next_pos) / (double) (old_next_to_next_pos - old_next_pos);
+
+ copy_frame_ratio = ((old_tc_pos - next_t->frame()) / (double) (old_tc_pos - old_next_pos));
+
+ } else {
+ //next_frame_ratio = (((next_to_next_pos - fr_off) - next_t->frame()) / (double) ((next_to_next_pos) - next_t->frame()));
+ //next_pulse_ratio = (start_pulse / end_pulse);
+ }
+
+ new_next_bpm = next_t->note_types_per_minute() * next_frame_ratio;
+ new_copy_end_bpm = tempo_copy->end_note_types_per_minute() * copy_frame_ratio;
+
+ next_t->set_note_types_per_minute (new_next_bpm);
+ tempo_copy->set_end_note_types_per_minute (new_copy_end_bpm);
+ recompute_tempi (future_map);
+
+ if (check_solved (future_map)) {
+ for (Metrics::const_iterator i = _metrics.begin(); i != _metrics.end(); ++i) {
+ if ((*i)->is_tempo() && (*i)->minute() > ts->minute()) {
+ next_t = static_cast<TempoSection*> (*i);
+ break;
+ }
+ }
+
+ if (!next_t) {
+ return false;
+ }
+ next_t->set_note_types_per_minute (new_next_bpm);
+ ts->set_end_note_types_per_minute (new_copy_end_bpm);
+ recompute_map (_metrics);
+ can_solve = true;
+ }
+ }
+ }
+
+ Metrics::const_iterator d = future_map.begin();
+ while (d != future_map.end()) {
+ delete (*d);
+ ++d;
+ }
+ if (can_solve) {
+ MetricPositionChanged (PropertyChange ()); // Emit Signal
+ }
+
+ return can_solve;
+}
+/** Returns the exact bbt-based beat corresponding to the bar, beat or quarter note subdivision nearest to
+ * the supplied frame, possibly returning a negative value.
+ *
+ * @param frame The session frame position.
+ * @param sub_num The subdivision to use when rounding the beat.
+ * A value of -1 indicates rounding to BBT bar. 1 indicates rounding to BBT beats.
+ * Positive integers indicate quarter note (non BBT) divisions.
+ * 0 indicates that the returned beat should not be rounded (equivalent to quarter_note_at_frame()).
+ * @return The beat position of the supplied frame.
+ *
+ * when working to a musical grid, the use of sub_nom indicates that
+ * the position should be interpreted musically.
+ *
+ * it effectively snaps to meter bars, meter beats or quarter note divisions
+ * (as per current gui convention) and returns a musical position independent of frame rate.
+ *
+ * If the supplied frame lies before the first meter, the return will be negative,
+ * in which case the returned beat uses the first meter (for BBT subdivisions) and
+ * the continuation of the tempo curve (backwards).
+ *
+ * This function is sensitive to tempo and meter.
+ */
double
-TempoMap::exact_qn_at_frame (const framepos_t& frame, const int32_t sub_num)
+TempoMap::exact_beat_at_frame (const framepos_t& frame, const int32_t sub_num) const
+{
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+
+ return exact_beat_at_frame_locked (_metrics, frame, sub_num);
+}
+
+double
+TempoMap::exact_beat_at_frame_locked (const Metrics& metrics, const framepos_t& frame, const int32_t divisions) const
+{
+ return beat_at_pulse_locked (_metrics, exact_qn_at_frame_locked (metrics, frame, divisions) / 4.0);
+}
+
+/** Returns the exact quarter note corresponding to the bar, beat or quarter note subdivision nearest to
+ * the supplied frame, possibly returning a negative value.
+ *
+ * @param frame The session frame position.
+ * @param sub_num The subdivision to use when rounding the quarter note.
+ * A value of -1 indicates rounding to BBT bar. 1 indicates rounding to BBT beats.
+ * Positive integers indicate quarter note (non BBT) divisions.
+ * 0 indicates that the returned quarter note should not be rounded (equivalent to quarter_note_at_frame()).
+ * @return The quarter note position of the supplied frame.
+ *
+ * When working to a musical grid, the use of sub_nom indicates that
+ * the frame position should be interpreted musically.
+ *
+ * it effectively snaps to meter bars, meter beats or quarter note divisions
+ * (as per current gui convention) and returns a musical position independent of frame rate.
+ *
+ * If the supplied frame lies before the first meter, the return will be negative,
+ * in which case the returned quarter note uses the first meter (for BBT subdivisions) and
+ * the continuation of the tempo curve (backwards).
+ *
+ * This function is tempo-sensitive.
+ */
+double
+TempoMap::exact_qn_at_frame (const framepos_t& frame, const int32_t sub_num) const
{
Glib::Threads::RWLock::ReaderLock lm (lock);
}
double
-TempoMap::exact_qn_at_frame_locked (const Metrics& metrics, const framepos_t& frame, const int32_t sub_num)
+TempoMap::exact_qn_at_frame_locked (const Metrics& metrics, const framepos_t& frame, const int32_t sub_num) const
{
- double qn = quarter_note_at_frame_locked (metrics, frame);
+ double qn = pulse_at_minute_locked (metrics, minute_at_frame (frame)) * 4.0;
if (sub_num > 1) {
qn = floor (qn) + (floor (((qn - floor (qn)) * (double) sub_num) + 0.5) / sub_num);
} else if (sub_num == 1) {
- /* snap to quarter note */
- qn = floor (qn + 0.5);
+ /* the gui requested exact musical (BBT) beat */
+ qn = pulse_at_beat_locked (metrics, (floor (beat_at_minute_locked (metrics, minute_at_frame (frame)) + 0.5))) * 4.0;
} else if (sub_num == -1) {
/* snap to bar */
Timecode::BBT_Time bbt = bbt_at_pulse_locked (metrics, qn / 4.0);
bbt.beats = 1;
bbt.ticks = 0;
- const double prev_b = pulse_at_bbt_locked (_metrics, bbt) * 4.0;
+ const double prev_b = pulse_at_bbt_locked (metrics, bbt) * 4.0;
++bbt.bars;
- const double next_b = pulse_at_bbt_locked (_metrics, bbt) * 4.0;
+ const double next_b = pulse_at_bbt_locked (metrics, bbt) * 4.0;
if ((qn - prev_b) > (next_b - prev_b) / 2.0) {
qn = next_b;
return qn;
}
+/** returns the frame duration of the supplied BBT time at a specified frame position in the tempo map.
+ * @param pos the frame position in the tempo map.
+ * @param bbt the distance in BBT time from pos to calculate.
+ * @param dir the rounding direction..
+ * @return the duration in frames between pos and bbt
+*/
framecnt_t
TempoMap::bbt_duration_at (framepos_t pos, const BBT_Time& bbt, int dir)
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- const double tick_at_time = max (0.0, 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 frame_at_beat_locked (_metrics, total_beats);
-}
+ BBT_Time pos_bbt = bbt_at_minute_locked (_metrics, minute_at_frame (pos));
-framepos_t
-TempoMap::round_to_bar (framepos_t fr, RoundMode dir)
-{
- return round_to_type (fr, dir, Bar);
-}
-
-framepos_t
-TempoMap::round_to_beat (framepos_t fr, RoundMode dir)
-{
- return round_to_type (fr, dir, Beat);
-}
-
-framepos_t
-TempoMap::round_to_beat_subdivision (framepos_t fr, int sub_num, RoundMode dir)
-{
- Glib::Threads::RWLock::ReaderLock lm (lock);
- uint32_t ticks = (uint32_t) floor (max (0.0, beat_at_frame_locked (_metrics, fr)) * BBT_Time::ticks_per_beat);
- uint32_t beats = (uint32_t) floor (ticks / BBT_Time::ticks_per_beat);
- uint32_t ticks_one_subdivisions_worth = (uint32_t) BBT_Time::ticks_per_beat / sub_num;
-
- ticks -= beats * BBT_Time::ticks_per_beat;
+ const double divisions = meter_section_at_minute_locked (_metrics, minute_at_frame (pos)).divisions_per_bar();
if (dir > 0) {
- /* round to next (or same iff dir == RoundUpMaybe) */
-
- uint32_t mod = ticks % ticks_one_subdivisions_worth;
+ pos_bbt.bars += bbt.bars;
- if (mod == 0 && dir == RoundUpMaybe) {
- /* right on the subdivision, which is fine, so do nothing */
-
- } else if (mod == 0) {
- /* right on the subdivision, so the difference is just the subdivision ticks */
- ticks += ticks_one_subdivisions_worth;
-
- } else {
- /* not on subdivision, compute distance to next subdivision */
-
- ticks += ticks_one_subdivisions_worth - mod;
+ pos_bbt.ticks += bbt.ticks;
+ if ((double) pos_bbt.ticks > BBT_Time::ticks_per_beat) {
+ pos_bbt.beats += 1;
+ pos_bbt.ticks -= BBT_Time::ticks_per_beat;
}
- if (ticks >= BBT_Time::ticks_per_beat) {
- ticks -= BBT_Time::ticks_per_beat;
+ pos_bbt.beats += bbt.beats;
+ if ((double) pos_bbt.beats > divisions) {
+ pos_bbt.bars += 1;
+ pos_bbt.beats -= divisions;
}
- } else if (dir < 0) {
+ const framecnt_t pos_bbt_frame = frame_at_minute (minute_at_bbt_locked (_metrics, pos_bbt));
- /* round to previous (or same iff dir == RoundDownMaybe) */
-
- uint32_t difference = ticks % ticks_one_subdivisions_worth;
+ return pos_bbt_frame - pos;
- if (difference == 0 && dir == RoundDownAlways) {
- /* right on the subdivision, but force-rounding down,
- so the difference is just the subdivision ticks */
- difference = ticks_one_subdivisions_worth;
- }
+ } else {
- if (ticks < difference) {
- ticks = BBT_Time::ticks_per_beat - ticks;
+ if (pos_bbt.bars <= bbt.bars) {
+ pos_bbt.bars = 1;
} else {
- ticks -= difference;
+ pos_bbt.bars -= bbt.bars;
}
- } else {
- /* round to nearest */
- double rem;
-
- /* compute the distance to the previous and next subdivision */
-
- if ((rem = fmod ((double) ticks, (double) ticks_one_subdivisions_worth)) > ticks_one_subdivisions_worth/2.0) {
-
- /* closer to the next subdivision, so shift forward */
-
- ticks = lrint (ticks + (ticks_one_subdivisions_worth - rem));
-
- DEBUG_TRACE (DEBUG::SnapBBT, string_compose ("moved forward to %1\n", ticks));
-
- if (ticks > BBT_Time::ticks_per_beat) {
- ++beats;
- ticks -= BBT_Time::ticks_per_beat;
- DEBUG_TRACE (DEBUG::SnapBBT, string_compose ("fold beat to %1\n", beats));
+ if (pos_bbt.ticks < bbt.ticks) {
+ if (pos_bbt.bars > 1) {
+ if (pos_bbt.beats == 1) {
+ pos_bbt.bars--;
+ pos_bbt.beats = divisions;
+ } else {
+ pos_bbt.beats--;
+ }
+ pos_bbt.ticks = BBT_Time::ticks_per_beat - (bbt.ticks - pos_bbt.ticks);
+ } else {
+ pos_bbt.beats = 1;
+ pos_bbt.ticks = 0;
}
+ } else {
+ pos_bbt.ticks -= bbt.ticks;
+ }
- } else if (rem > 0) {
-
- /* closer to previous subdivision, so shift backward */
-
- if (rem > ticks) {
- if (beats == 0) {
- /* can't go backwards past zero, so ... */
- return 0;
- }
- /* step back to previous beat */
- --beats;
- ticks = lrint (BBT_Time::ticks_per_beat - rem);
- DEBUG_TRACE (DEBUG::SnapBBT, string_compose ("step back beat to %1\n", beats));
+ if (pos_bbt.beats <= bbt.beats) {
+ if (pos_bbt.bars > 1) {
+ pos_bbt.bars--;
+ pos_bbt.beats = divisions - (bbt.beats - pos_bbt.beats);
} else {
- ticks = lrint (ticks - rem);
- DEBUG_TRACE (DEBUG::SnapBBT, string_compose ("moved backward to %1\n", ticks));
+ pos_bbt.beats = 1;
}
} else {
- /* on the subdivision, do nothing */
+ pos_bbt.beats -= bbt.beats;
}
+
+ return pos - frame_at_minute (minute_at_bbt_locked (_metrics, pos_bbt));
}
- const framepos_t ret_frame = frame_at_beat_locked (_metrics, beats + (ticks / BBT_Time::ticks_per_beat));
+ return 0;
+}
- return ret_frame;
+MusicFrame
+TempoMap::round_to_bar (framepos_t fr, RoundMode dir)
+{
+ return round_to_type (fr, dir, Bar);
}
-framepos_t
+MusicFrame
+TempoMap::round_to_beat (framepos_t fr, RoundMode dir)
+{
+ return round_to_type (fr, dir, Beat);
+}
+
+MusicFrame
TempoMap::round_to_quarter_note_subdivision (framepos_t fr, int sub_num, RoundMode dir)
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- uint32_t ticks = (uint32_t) floor (max (0.0, quarter_note_at_frame_locked (_metrics, fr)) * BBT_Time::ticks_per_beat);
+ uint32_t ticks = (uint32_t) floor (max (0.0, pulse_at_minute_locked (_metrics, minute_at_frame (fr))) * BBT_Time::ticks_per_beat * 4.0);
uint32_t beats = (uint32_t) floor (ticks / BBT_Time::ticks_per_beat);
uint32_t ticks_one_subdivisions_worth = (uint32_t) BBT_Time::ticks_per_beat / sub_num;
ticks += ticks_one_subdivisions_worth - mod;
}
- if (ticks >= BBT_Time::ticks_per_beat) {
- ticks -= BBT_Time::ticks_per_beat;
- }
+//NOTE: this code intentionally limits the rounding so we don't advance to the next beat.
+// For the purposes of "jump-to-next-subdivision", we DO want to advance to the next beat.
+// And since the "prev" direction DOES move beats, I assume this code is unintended.
+// But I'm keeping it around, until we determine there are no terrible consequences.
+// if (ticks >= BBT_Time::ticks_per_beat) {
+// ticks -= BBT_Time::ticks_per_beat;
+// }
+
} else if (dir < 0) {
/* round to previous (or same iff dir == RoundDownMaybe) */
if (rem > ticks) {
if (beats == 0) {
/* can't go backwards past zero, so ... */
- return 0;
+ return MusicFrame (0, 0);
}
/* step back to previous beat */
--beats;
}
}
- const framepos_t ret_frame = frame_at_quarter_note_locked (_metrics, beats + (ticks / BBT_Time::ticks_per_beat));
+ MusicFrame ret (0, 0);
+ ret.frame = frame_at_minute (minute_at_pulse_locked (_metrics, (beats + (ticks / BBT_Time::ticks_per_beat)) / 4.0));
+ ret.division = sub_num;
- return ret_frame;
+ return ret;
}
-framepos_t
+MusicFrame
TempoMap::round_to_type (framepos_t frame, RoundMode dir, BBTPointType type)
{
Glib::Threads::RWLock::ReaderLock lm (lock);
-
- const double beat_at_framepos = max (0.0, beat_at_frame_locked (_metrics, frame));
+ const double minute = minute_at_frame (frame);
+ const double beat_at_framepos = max (0.0, beat_at_minute_locked (_metrics, minute));
BBT_Time bbt (bbt_at_beat_locked (_metrics, beat_at_framepos));
+ MusicFrame ret (0, 0);
switch (type) {
case Bar:
+ ret.division = -1;
+
if (dir < 0) {
/* find bar previous to 'frame' */
+ if (bbt.bars > 0)
+ --bbt.bars;
bbt.beats = 1;
bbt.ticks = 0;
- return frame_at_bbt_locked (_metrics, bbt);
+
+ ret.frame = frame_at_minute (minute_at_bbt_locked (_metrics, bbt));
+
+ return ret;
} else if (dir > 0) {
/* find bar following 'frame' */
++bbt.bars;
bbt.beats = 1;
bbt.ticks = 0;
- return frame_at_bbt_locked (_metrics, bbt);
+
+ ret.frame = frame_at_minute (minute_at_bbt_locked (_metrics, bbt));
+
+ return ret;
} else {
/* true rounding: find nearest bar */
- framepos_t raw_ft = frame_at_bbt_locked (_metrics, bbt);
+ framepos_t raw_ft = frame_at_minute (minute_at_bbt_locked (_metrics, bbt));
bbt.beats = 1;
bbt.ticks = 0;
- framepos_t prev_ft = frame_at_bbt_locked (_metrics, bbt);
+ framepos_t prev_ft = frame_at_minute (minute_at_bbt_locked (_metrics, bbt));
++bbt.bars;
- framepos_t next_ft = frame_at_bbt_locked (_metrics, bbt);
+ framepos_t next_ft = frame_at_minute (minute_at_bbt_locked (_metrics, bbt));
+
+ if ((raw_ft - prev_ft) > (next_ft - prev_ft) / 2) {
+ ret.frame = next_ft;
- if ((raw_ft - prev_ft) > (next_ft - prev_ft) / 2) {
- return next_ft;
+ return ret;
} else {
- return prev_ft;
+ --bbt.bars;
+ ret.frame = prev_ft;
+
+ return ret;
}
}
break;
case Beat:
+ ret.division = 1;
+
if (dir < 0) {
- return frame_at_beat_locked (_metrics, floor (beat_at_framepos));
+ ret.frame = frame_at_minute (minute_at_beat_locked (_metrics, floor (beat_at_framepos)));
+
+ return ret;
} else if (dir > 0) {
- return frame_at_beat_locked (_metrics, ceil (beat_at_framepos));
+ ret.frame = frame_at_minute (minute_at_beat_locked (_metrics, ceil (beat_at_framepos)));
+
+ return ret;
} else {
- return frame_at_beat_locked (_metrics, floor (beat_at_framepos + 0.5));
+ ret.frame = frame_at_minute (minute_at_beat_locked (_metrics, floor (beat_at_framepos + 0.5)));
+
+ return ret;
}
break;
}
- return 0;
+ return MusicFrame (0, 0);
}
void
TempoMap::get_grid (vector<TempoMap::BBTPoint>& points,
- framepos_t lower, framepos_t upper)
+ framepos_t lower, framepos_t upper, uint32_t bar_mod)
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- int32_t cnt = ceil (beat_at_frame_locked (_metrics, lower));
+ int32_t cnt = ceil (beat_at_minute_locked (_metrics, minute_at_frame (lower)));
framecnt_t pos = 0;
/* although the map handles negative beats, bbt doesn't. */
if (cnt < 0.0) {
cnt = 0.0;
}
- if (frame_at_beat_locked (_metrics, cnt) >= upper) {
+ if (minute_at_beat_locked (_metrics, cnt) >= minute_at_frame (upper)) {
return;
}
+ if (bar_mod == 0) {
+ while (pos >= 0 && pos < upper) {
+ pos = frame_at_minute (minute_at_beat_locked (_metrics, cnt));
+ const TempoSection tempo = tempo_section_at_minute_locked (_metrics, minute_at_frame (pos));
+ const MeterSection meter = meter_section_at_minute_locked (_metrics, minute_at_frame (pos));
+ const BBT_Time bbt = bbt_at_beat_locked (_metrics, cnt);
+
+ points.push_back (BBTPoint (meter, tempo_at_minute_locked (_metrics, minute_at_frame (pos)), pos, bbt.bars, bbt.beats, tempo.c()));
+ ++cnt;
+ }
+ } else {
+ BBT_Time bbt = bbt_at_minute_locked (_metrics, minute_at_frame (lower));
+ bbt.beats = 1;
+ bbt.ticks = 0;
+
+ if (bar_mod != 1) {
+ bbt.bars -= bbt.bars % bar_mod;
+ ++bbt.bars;
+ }
- while (pos < upper) {
- pos = frame_at_beat_locked (_metrics, cnt);
- const TempoSection tempo = tempo_section_at_frame_locked (_metrics, pos);
- const MeterSection meter = meter_section_at_frame_locked (_metrics, pos);
- const BBT_Time bbt = bbt_at_beat_locked (_metrics, cnt);
- points.push_back (BBTPoint (meter, tempo_at_frame_locked (_metrics, pos), pos, bbt.bars, bbt.beats, tempo.c_func()));
- ++cnt;
+ while (pos >= 0 && pos < upper) {
+ pos = frame_at_minute (minute_at_bbt_locked (_metrics, bbt));
+ const TempoSection tempo = tempo_section_at_minute_locked (_metrics, minute_at_frame (pos));
+ const MeterSection meter = meter_section_at_minute_locked (_metrics, minute_at_frame (pos));
+ points.push_back (BBTPoint (meter, tempo_at_minute_locked (_metrics, minute_at_frame (pos)), pos, bbt.bars, bbt.beats, tempo.c()));
+ bbt.bars += bar_mod;
+ }
}
}
TempoMap::tempo_section_at_frame (framepos_t frame) const
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- return tempo_section_at_frame_locked (_metrics, frame);
+
+ return tempo_section_at_minute_locked (_metrics, minute_at_frame (frame));
+}
+
+TempoSection&
+TempoMap::tempo_section_at_frame (framepos_t frame)
+{
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+
+ return tempo_section_at_minute_locked (_metrics, minute_at_frame (frame));
}
const TempoSection&
-TempoMap::tempo_section_at_frame_locked (const Metrics& metrics, framepos_t frame) const
+TempoMap::tempo_section_at_minute_locked (const Metrics& metrics, double minute) const
{
TempoSection* prev = 0;
if (!t->active()) {
continue;
}
- if (prev && t->frame() > frame) {
+ if (prev && t->minute() > minute) {
break;
}
return *prev;
}
+TempoSection&
+TempoMap::tempo_section_at_minute_locked (const Metrics& metrics, double minute)
+{
+ TempoSection* prev = 0;
+
+ TempoSection* t;
+
+ for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
+ if ((*i)->is_tempo()) {
+ t = static_cast<TempoSection*> (*i);
+ if (!t->active()) {
+ continue;
+ }
+ if (prev && t->minute() > minute) {
+ break;
+ }
+
+ prev = t;
+ }
+ }
+
+ if (prev == 0) {
+ fatal << endmsg;
+ abort(); /*NOTREACHED*/
+ }
+
+ return *prev;
+}
const TempoSection&
TempoMap::tempo_section_at_beat_locked (const Metrics& metrics, const double& beat) const
{
for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
if ((*i)->is_tempo()) {
t = static_cast<TempoSection*> (*i);
+
+ if (!t->active()) {
+ continue;
+ }
+
if (prev_t && ((t->pulse() - prev_m->pulse()) * prev_m->note_divisor()) + prev_m->beat() > beat) {
break;
}
return *prev_t;
}
+TempoSection*
+TempoMap::next_tempo_section (TempoSection* ts) const
+{
+ if (!ts) {
+ return 0;
+ }
+
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+
+ TempoSection* prev = 0;
+
+ for (Metrics::const_iterator i = _metrics.begin(); i != _metrics.end(); ++i) {
+
+ if ((*i)->is_tempo()) {
+ TempoSection* t = static_cast<TempoSection*> (*i);
+
+ if (!t->active()) {
+ continue;
+ }
+
+ if (prev && prev == ts) {
+
+ return t;
+ }
+
+ prev = t;
+ }
+ }
+
+ if (prev == 0) {
+ fatal << endmsg;
+ abort(); /*NOTREACHED*/
+ }
+
+ return 0;
+}
/* don't use this to calculate length (the tempo is only correct for this frame).
do that stuff based on the beat_at_frame and frame_at_beat api
*/
double
-TempoMap::frames_per_beat_at (const framepos_t& frame, const framecnt_t& sr) const
+TempoMap::frames_per_quarter_note_at (const framepos_t& frame, const framecnt_t& sr) const
{
Glib::Threads::RWLock::ReaderLock lm (lock);
ts_at = t;
}
}
+ assert (ts_at);
if (ts_after) {
- return (60.0 * _frame_rate) / (ts_at->tempo_at_frame (frame, _frame_rate) * 4.0);
+ return (60.0 * _frame_rate) / ts_at->tempo_at_minute (minute_at_frame (frame)).quarter_notes_per_minute();
}
/* must be treated as constant tempo */
- return ts_at->frames_per_beat (_frame_rate);
+ return ts_at->frames_per_quarter_note (_frame_rate);
+}
+
+const MeterSection&
+TempoMap::meter_section_at_frame (framepos_t frame) const
+{
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+ return meter_section_at_minute_locked (_metrics, minute_at_frame (frame));
}
const MeterSection&
-TempoMap::meter_section_at_frame_locked (const Metrics& metrics, framepos_t frame) const
+TempoMap::meter_section_at_minute_locked (const Metrics& metrics, double minute) const
{
Metrics::const_iterator i;
MeterSection* prev = 0;
if (!(*i)->is_tempo()) {
m = static_cast<MeterSection*> (*i);
- if (prev && (*i)->frame() > frame) {
+ if (prev && (*i)->minute() > minute) {
break;
}
return *prev;
}
-
-const MeterSection&
-TempoMap::meter_section_at_frame (framepos_t frame) const
-{
- Glib::Threads::RWLock::ReaderLock lm (lock);
- return meter_section_at_frame_locked (_metrics, frame);
-}
-
const MeterSection&
TempoMap::meter_section_at_beat_locked (const Metrics& metrics, const double& beat) const
{
{
MeterSection* prev_m = 0;
TempoSection* prev_t = 0;
+ bool have_initial_t = false;
for (Metrics::iterator i = _metrics.begin(); i != _metrics.end(); ++i) {
MeterSection* m;
TempoSection* t;
if ((m = dynamic_cast<MeterSection*>(*i)) != 0) {
- if (!m->movable()) {
+ if (m->initial()) {
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_minute (0.0);
m->set_position_lock_style (AudioTime);
prev_m = m;
continue;
continue;
}
- if (!t->movable()) {
+ if (t->initial()) {
t->set_pulse (0.0);
- t->set_frame (0);
+ t->set_minute (0.0);
t->set_position_lock_style (AudioTime);
prev_t = t;
+ have_initial_t = true;
continue;
}
if (prev_t) {
+ /* some 4.x sessions have no initial (non-movable) tempo. */
+ if (!have_initial_t) {
+ prev_t->set_pulse (0.0);
+ prev_t->set_minute (0.0);
+ prev_t->set_position_lock_style (AudioTime);
+ prev_t->set_initial (true);
+ prev_t->set_locked_to_meter (true);
+ have_initial_t = true;
+ }
+
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);
}
}
}
+void
+TempoMap::fix_legacy_end_session ()
+{
+ TempoSection* prev_t = 0;
+
+ for (Metrics::iterator i = _metrics.begin(); i != _metrics.end(); ++i) {
+ TempoSection* t;
+
+ if ((t = dynamic_cast<TempoSection*>(*i)) != 0) {
+
+ if (!t->active()) {
+ continue;
+ }
+
+ if (prev_t) {
+ if (prev_t->type() != TempoSection::Constant) {
+ prev_t->set_end_note_types_per_minute (t->note_types_per_minute());
+ }
+ }
+
+ prev_t = t;
+ }
+ }
+}
XMLNode&
TempoMap::get_state ()
if (child->name() == TempoSection::xml_state_node_name) {
try {
- TempoSection* ts = new TempoSection (*child);
+ TempoSection* ts = new TempoSection (*child, _frame_rate);
_metrics.push_back (ts);
}
} else if (child->name() == MeterSection::xml_state_node_name) {
try {
- MeterSection* ms = new MeterSection (*child);
+ MeterSection* ms = new MeterSection (*child, _frame_rate);
_metrics.push_back (ms);
}
fix_legacy_session();
break;
}
+
+ if (t->legacy_end()) {
+ fix_legacy_end_session();
+ break;
+ }
+
break;
}
}
}
void
-TempoMap::dump (const Metrics& metrics, std::ostream& o) const
+TempoMap::dump (std::ostream& o) const
{
Glib::Threads::RWLock::ReaderLock lm (lock, Glib::Threads::TRY_LOCK);
const MeterSection* m;
const TempoSection* t;
const TempoSection* prev_t = 0;
- for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
+ for (Metrics::const_iterator i = _metrics.begin(); i != _metrics.end(); ++i) {
if ((t = dynamic_cast<const TempoSection*>(*i)) != 0) {
- 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;
+ o << "Tempo @ " << *i << " start : " << t->note_types_per_minute() << " end : " << t->end_note_types_per_minute() << " BPM (pulse = 1/" << t->note_type()
+ << " type= " << enum_2_string (t->type()) << ") " << " at pulse= " << t->pulse()
+ << " minute= " << t->minute() << " frame= " << t->frame() << " (initial? " << t->initial() << ')'
+ << " pos lock: " << enum_2_string (t->position_lock_style()) << 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;
+ o << " current start : " << t->note_types_per_minute()
+ << " current end : " << t->end_note_types_per_minute()
+ << " | " << t->pulse() << " | " << t->frame() << " | " << t->minute() << std::endl;
+ o << " previous : " << prev_t->note_types_per_minute()
+ << " | " << prev_t->pulse() << " | " << prev_t->frame() << " | " << prev_t->minute() << std::endl;
+ o << " calculated : " << prev_t->tempo_at_pulse (t->pulse())
+ << " | " << prev_t->pulse_at_ntpm (prev_t->end_note_types_per_minute(), t->minute())
+ << " | " << frame_at_minute (prev_t->minute_at_ntpm (prev_t->end_note_types_per_minute(), t->pulse()))
+ << " | " << prev_t->minute_at_ntpm (prev_t->end_note_types_per_minute(), t->pulse()) << 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()
- << " pulse: " << m->pulse() << " beat : " << m->beat() << " pos lock: " << enum_2_string (m->position_lock_style()) << " (movable? " << m->movable() << ')' << endl;
+ o << "Meter @ " << *i << ' ' << m->divisions_per_bar() << '/' << m->note_divisor() << " at " << m->bbt()
+ << " frame= " << m->frame() << " pulse: " << m->pulse() << " beat : " << m->beat()
+ << " pos lock: " << enum_2_string (m->position_lock_style()) << " (initial? " << m->initial() << ')' << endl;
}
}
o << "------" << std::endl;
void
TempoMap::insert_time (framepos_t where, framecnt_t amount)
{
- {
- Glib::Threads::RWLock::WriterLock lm (lock);
- for (Metrics::iterator i = _metrics.begin(); i != _metrics.end(); ++i) {
- if ((*i)->frame() >= where && (*i)->movable ()) {
- (*i)->set_frame ((*i)->frame() + amount);
- }
- }
-
- /* now reset the BBT time of all metrics, based on their new
- * audio time. This is the only place where we do this reverse
- * timestamp.
- */
-
- Metrics::iterator i;
- const MeterSection* meter;
- const TempoSection* tempo;
- MeterSection *m;
- TempoSection *t;
-
- meter = &first_meter ();
- tempo = &first_tempo ();
+ for (Metrics::reverse_iterator i = _metrics.rbegin(); i != _metrics.rend(); ++i) {
+ if ((*i)->frame() >= where && !(*i)->initial ()) {
+ MeterSection* ms;
+ TempoSection* ts;
- BBT_Time start;
- BBT_Time end;
-
- // cerr << "\n###################### TIMESTAMP via AUDIO ##############\n" << endl;
-
- bool first = true;
- MetricSection* prev = 0;
-
- for (i = _metrics.begin(); i != _metrics.end(); ++i) {
-
- BBT_Time bbt;
- //TempoMetric metric (*meter, *tempo);
- MeterSection* ms = const_cast<MeterSection*>(meter);
- TempoSection* ts = const_cast<TempoSection*>(tempo);
- 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) {
- ts->set_pulse (m->pulse());
- }
- ts->set_frame (prev->frame());
-
- }
- if (ms) {
- if ((m = dynamic_cast<MeterSection*>(prev)) != 0) {
- 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) {
- if (!t->active()) {
- continue;
- }
- const double beat = beat_at_pulse_locked (_metrics, t->pulse());
- pair<double, BBT_Time> start = make_pair (beat, bbt_at_beat_locked (_metrics, beat));
- ms->set_beat (start);
- ms->set_pulse (t->pulse());
- }
- ms->set_frame (prev->frame());
- }
-
- } else {
- // metric will be at frames=0 bbt=1|1|0 by default
- // which is correct for our purpose
+ if ((ms = dynamic_cast <MeterSection*>(*i)) != 0) {
+ gui_set_meter_position (ms, (*i)->frame() + amount);
}
- // 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;
- } else if ((m = dynamic_cast<MeterSection*>(*i)) != 0) {
- bbt = bbt_at_frame_locked (_metrics, m->frame());
-
- // cerr << "timestamp @ " << (*i)->frame() << " with " << bbt.bars << "|" << bbt.beats << "|" << bbt.ticks << " => ";
-
- if (first) {
- first = false;
- } else {
-
- if (bbt.ticks > BBT_Time::ticks_per_beat/2) {
- /* round up to next beat */
- bbt.beats += 1;
- }
-
- bbt.ticks = 0;
-
- if (bbt.beats != 1) {
- /* round up to next bar */
- bbt.bars += 1;
- bbt.beats = 1;
- }
- }
- pair<double, BBT_Time> start = make_pair (max (0.0, 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 {
- fatal << _("programming error: unhandled MetricSection type") << endmsg;
- abort(); /*NOTREACHED*/
+ if ((ts = dynamic_cast <TempoSection*>(*i)) != 0) {
+ gui_set_tempo_position (ts, (*i)->frame() + amount, 0);
}
-
- prev = (*i);
}
-
- recompute_map (_metrics);
}
-
PropertyChanged (PropertyChange ());
}
+
bool
TempoMap::remove_time (framepos_t where, framecnt_t amount)
{
}
else if ((*i)->frame() >= where) {
// TODO: make sure that moved tempo/meter markers are rounded to beat/bar boundaries
- (*i)->set_frame ((*i)->frame() - amount);
+ (*i)->set_minute ((*i)->minute() - minute_at_frame (amount));
if ((*i)->frame() == where) {
// marker was immediately after end of range
tempo_after = dynamic_cast<TempoSection*> (*i);
//find the last TEMPO and METER metric (if any) and move it to the cut point so future stuff is correct
if (last_tempo && !tempo_after) {
metric_kill_list.remove(last_tempo);
- last_tempo->set_frame(where);
+ last_tempo->set_minute (minute_at_frame (where));
moved = true;
}
if (last_meter && !meter_after) {
metric_kill_list.remove(last_meter);
- last_meter->set_frame(where);
+ last_meter->set_minute (minute_at_frame (where));
moved = true;
}
return moved;
}
-/** Add some (fractional) beats to a session frame position, and return the result in frames.
+/** Add some (fractional) Beats to a session frame position, and return the result in frames.
* pos can be -ve, if required.
*/
framepos_t
-TempoMap::framepos_plus_beats (framepos_t frame, Evoral::Beats beats) const
-{
- Glib::Threads::RWLock::ReaderLock lm (lock);
-
- return frame_at_beat_locked (_metrics, beat_at_frame_locked (_metrics, frame) + beats.to_double());
-}
-framepos_t
-TempoMap::framepos_plus_qn (framepos_t frame, Evoral::Beats quarter_note) const
-{
- Glib::Threads::RWLock::ReaderLock lm (lock);
-
- return frame_at_quarter_note_locked (_metrics, quarter_note_at_frame_locked (_metrics, frame) + quarter_note.to_double());
-}
-
-/** Subtract some (fractional) beats from a frame position, and return the result in frames */
-framepos_t
-TempoMap::framepos_minus_beats (framepos_t pos, Evoral::Beats beats) const
+TempoMap::framepos_plus_qn (framepos_t frame, Evoral::Beats beats) const
{
Glib::Threads::RWLock::ReaderLock lm (lock);
+ const double frame_qn = pulse_at_minute_locked (_metrics, minute_at_frame (frame)) * 4.0;
- return frame_at_beat_locked (_metrics, beat_at_frame_locked (_metrics, pos) - beats.to_double());
+ return frame_at_minute (minute_at_pulse_locked (_metrics, (frame_qn + beats.to_double()) / 4.0));
}
-/** Add the BBT interval op to pos and return the result */
framepos_t
TempoMap::framepos_plus_bbt (framepos_t pos, BBT_Time op) const
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- BBT_Time pos_bbt = bbt_at_beat_locked (_metrics, beat_at_frame_locked (_metrics, pos));
+ BBT_Time pos_bbt = bbt_at_beat_locked (_metrics, beat_at_minute_locked (_metrics, minute_at_frame (pos)));
pos_bbt.ticks += op.ticks;
if (pos_bbt.ticks >= BBT_Time::ticks_per_beat) {
++pos_bbt.beats;
}
pos_bbt.bars += op.bars;
- return frame_at_bbt_locked (_metrics, pos_bbt);
+ return frame_at_minute (minute_at_bbt_locked (_metrics, pos_bbt));
}
/** Count the number of beats that are equivalent to distance when going forward,
starting at pos.
*/
-Evoral::Beats
-TempoMap::framewalk_to_beats (framepos_t pos, framecnt_t distance) const
-{
- Glib::Threads::RWLock::ReaderLock lm (lock);
-
- return Evoral::Beats (beat_at_frame_locked (_metrics, pos + distance) - beat_at_frame_locked (_metrics, pos));
-}
-
Evoral::Beats
TempoMap::framewalk_to_qn (framepos_t pos, framecnt_t distance) const
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- return Evoral::Beats (quarter_note_at_frame_locked (_metrics, pos + distance) - quarter_note_at_frame_locked (_metrics, pos));
+ return Evoral::Beats (quarter_notes_between_frames_locked (_metrics, pos, pos + distance));
}
+
struct bbtcmp {
bool operator() (const BBT_Time& a, const BBT_Time& b) {
return a < b;
std::ostream&
operator<< (std::ostream& o, const Tempo& t) {
- return o << t.beats_per_minute() << " 1/" << t.note_type() << "'s per minute";
+ return o << t.note_types_per_minute() << " 1/" << t.note_type() << "'s per minute";
}
std::ostream&
projects / ardour.git / blobdiff