#include "pbd/enumwriter.h"
#include "pbd/xml++.h"
-#include "evoral/Beats.hpp"
+
+#include "temporal/beats.h"
#include "ardour/debug.h"
#include "ardour/lmath.h"
#include "ardour/tempo.h"
+#include "ardour/types_convert.h"
-#include "i18n.h"
+#include "pbd/i18n.h"
#include <locale.h>
using namespace std;
/* _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);
+
+samplepos_t
+MetricSection::sample_at_minute (const double& time) const
+{
+ return (samplepos_t) floor ((time * 60.0 * _sample_rate) + 0.5);
+}
+
+double
+MetricSection::minute_at_sample (const samplepos_t sample) const
+{
+ return (sample / (double) _sample_rate) / 60.0;
+}
+
+/***********************************************************************/
+
+bool
+ARDOUR::bbt_time_to_string (const BBT_Time& bbt, std::string& str)
+{
+ char buf[256];
+ int retval = snprintf (buf, sizeof(buf), "%" PRIu32 "|%" PRIu32 "|%" PRIu32, bbt.bars, bbt.beats,
+ bbt.ticks);
+
+ if (retval <= 0 || retval >= (int)sizeof(buf)) {
+ return false;
+ }
+
+ str = buf;
+ return true;
+}
+
+bool
+ARDOUR::string_to_bbt_time (const std::string& str, BBT_Time& bbt)
+{
+ if (sscanf (str.c_str (), "%" PRIu32 "|%" PRIu32 "|%" PRIu32, &bbt.bars, &bbt.beats,
+ &bbt.ticks) == 3) {
+ return true;
+ }
+ return false;
+}
+
/***********************************************************************/
double
-Meter::frames_per_grid (const Tempo& tempo, framecnt_t sr) const
+Meter::samples_per_grid (const Tempo& tempo, samplecnt_t sr) const
{
/* This is tempo- and meter-sensitive. The number it returns
is based on the interval between any two lines in the
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
-Meter::frames_per_bar (const Tempo& tempo, framecnt_t sr) const
+Meter::samples_per_bar (const Tempo& tempo, samplecnt_t sr) const
+{
+ return samples_per_grid (tempo, sr) * _divisions_per_bar;
+}
+
+/***********************************************************************/
+
+void
+MetricSection::add_state_to_node(XMLNode& node) const
+{
+ node.set_property ("pulse", _pulse);
+ node.set_property ("frame", sample());
+ node.set_property ("movable", !_initial);
+ node.set_property ("lock-style", _position_lock_style);
+}
+
+int
+MetricSection::set_state (const XMLNode& node, int /*version*/)
{
- return frames_per_grid (tempo, sr) * _divisions_per_bar;
+ node.get_property ("pulse", _pulse);
+
+ samplepos_t sample;
+ if (node.get_property ("frame", sample)) {
+ set_minute (minute_at_sample (sample));
+ }
+
+ bool tmp;
+ if (!node.get_property ("movable", tmp)) {
+ error << _("TempoSection XML node has no \"movable\" property") << endmsg;
+ throw failed_constructor();
+ }
+ _initial = !tmp;
+
+ if (!node.get_property ("lock-style", _position_lock_style)) {
+ if (!initial()) {
+ _position_lock_style = MusicTime;
+ } else {
+ _position_lock_style = AudioTime;
+ }
+ }
+ return 0;
}
/***********************************************************************/
const string TempoSection::xml_state_node_name = "Tempo";
-TempoSection::TempoSection (const XMLNode& node)
- : MetricSection (0.0)
+TempoSection::TempoSection (const XMLNode& node, samplecnt_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)
+ , _clamped (false)
{
- const XMLProperty *prop;
- LocaleGuard lg;
BBT_Time bbt;
- double pulse;
- uint32_t frame;
-
- _legacy_bbt = BBT_Time (0, 0, 0);
-
- if ((prop = node.property ("start")) != 0) {
- if (sscanf (prop->value().c_str(), "%" PRIu32 "|%" PRIu32 "|%" PRIu32,
- &bbt.bars,
- &bbt.beats,
- &bbt.ticks) == 3) {
+ std::string start_bbt;
+ _legacy_bbt.bars = 0; // legacy session check compars .bars != 0; default BBT_Time c'tor uses 1.
+ if (node.get_property ("start", start_bbt)) {
+ if (string_to_bbt_time (start_bbt, bbt)) {
/* legacy session - start used to be in bbt*/
_legacy_bbt = bbt;
- pulse = -1.0;
+ set_pulse(-1.0);
info << _("Legacy session detected. TempoSection XML node will be altered.") << endmsg;
}
}
- if ((prop = node.property ("pulse")) != 0) {
- if (sscanf (prop->value().c_str(), "%lf", &pulse) != 1) {
- error << _("TempoSection XML node has an illegal \"pulse\" value") << endmsg;
- }
- }
-
- set_pulse (pulse);
+ // Don't worry about return value, exception will be thrown on error
+ MetricSection::set_state (node, Stateful::loading_state_version);
- 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;
- } else {
- set_frame (frame);
+ if (node.get_property ("beats-per-minute", _note_types_per_minute)) {
+ if (_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 ("beats-per-minute")) == 0) {
- error << _("TempoSection XML node has no \"beats-per-minute\" property") << endmsg;
- throw failed_constructor();
+ if (node.get_property ("note-type", _note_type)) {
+ if (_note_type < 1.0) {
+ error << _("TempoSection XML node has an illegal \"note-type\" value") << endmsg;
+ throw failed_constructor();
+ }
+ } else {
+ /* older session, make note type be quarter by default */
+ _note_type = 4.0;
}
- 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();
+ if (!node.get_property ("clamped", _clamped)) {
+ _clamped = false;
}
- if ((prop = node.property ("note-type")) == 0) {
- /* older session, make note type be quarter by default */
- _note_type = 4.0;
- } else {
- if (sscanf (prop->value().c_str(), "%lf", &_note_type) != 1 || _note_type < 1.0) {
- error << _("TempoSection XML node has an illegal \"note-type\" value") << endmsg;
+ if (node.get_property ("end-beats-per-minute", _end_note_types_per_minute)) {
+ if (_end_note_types_per_minute < 0.0) {
+ info << _("TempoSection XML node has an illegal \"end-beats-per-minute\" value") << endmsg;
throw failed_constructor();
}
}
- 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()));
+ TempoSection::Type old_type;
+ if (node.get_property ("tempo-type", old_type)) {
+ /* sessions with a tempo-type node contain no end-beats-per-minute.
+ if the legacy node indicates a constant tempo, simply fill this in with the
+ start tempo. otherwise we need the next neighbour to know what it will be.
+ */
- if ((prop = node.property ("active")) == 0) {
- warning << _("TempoSection XML node has no \"active\" property") << endmsg;
- set_active(true);
- } else {
- set_active (string_is_affirmative (prop->value()));
+ if (old_type == TempoSection::Constant) {
+ _end_note_types_per_minute = _note_types_per_minute;
+ } else {
+ _end_note_types_per_minute = -1.0;
+ }
}
- if ((prop = node.property ("tempo-type")) == 0) {
- _type = Constant;
- } else {
- _type = Type (string_2_enum (prop->value(), _type));
+ if (!node.get_property ("active", _active)) {
+ warning << _("TempoSection XML node has no \"active\" property") << endmsg;
+ _active = true;
}
- if ((prop = node.property ("lock-style")) == 0) {
- if (movable()) {
- set_position_lock_style (MusicTime);
+ if (!node.get_property ("locked-to-meter", _locked_to_meter)) {
+ if (initial()) {
+ set_locked_to_meter (true);
} else {
- set_position_lock_style (AudioTime);
+ set_locked_to_meter (false);
}
- } else {
- set_position_lock_style (PositionLockStyle (string_2_enum (prop->value(), position_lock_style())));
}
- if ((prop = node.property ("locked-to-meter")) == 0) {
- 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);
}
}
TempoSection::get_state() const
{
XMLNode *root = new XMLNode (xml_state_node_name);
- char buf[256];
- LocaleGuard lg;
-
- snprintf (buf, sizeof (buf), "%f", pulse());
- root->add_property ("pulse", buf);
- snprintf (buf, sizeof (buf), "%li", frame());
- root->add_property ("frame", buf);
- snprintf (buf, sizeof (buf), "%f", _beats_per_minute);
- root->add_property ("beats-per-minute", buf);
- snprintf (buf, sizeof (buf), "%f", _note_type);
- root->add_property ("note-type", buf);
- snprintf (buf, sizeof (buf), "%s", movable()?"yes":"no");
- root->add_property ("movable", buf);
- snprintf (buf, sizeof (buf), "%s", active()?"yes":"no");
- root->add_property ("active", buf);
- root->add_property ("tempo-type", enum_2_string (_type));
- root->add_property ("lock-style", enum_2_string (position_lock_style()));
- root->add_property ("locked-to-meter", locked_to_meter()?"yes":"no");
+
+ MetricSection::add_state_to_node (*root);
+
+ root->set_property ("beats-per-minute", _note_types_per_minute);
+ root->set_property ("note-type", _note_type);
+ root->set_property ("clamped", _clamped);
+ root->set_property ("end-beats-per-minute", _end_note_types_per_minute);
+ root->set_property ("active", _active);
+ root->set_property ("locked-to-meter", _locked_to_meter);
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.
- beat b 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& b, 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 ((b - 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 sample position f.
+ * @param f the sample position.
+ * @return the position in whole-note pulses corresponding to f
+ *
+ * for use with musical units whose granularity is coarser than samples (e.g. ticks)
*/
+double
+TempoSection::pulse_at_sample (const samplepos_t f) const
+{
+ const bool constant = type() == Constant || _c == 0.0 || (initial() && f < sample());
+ if (constant) {
+ return (minute_at_sample (f - sample()) * pulses_per_minute()) + pulse();
+ }
+
+ return _pulse_at_time (minute_at_sample (f - sample())) + pulse();
+}
-framepos_t
-TempoSection::frame_at_pulse (const double& p, const framecnt_t& frame_rate) const
+samplepos_t
+TempoSection::sample_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 sample_at_minute (((p - pulse()) / pulses_per_minute()) + minute());
}
- return minute_to_frame (time_at_pulse (p - pulse()), frame_rate) + frame();
+ return sample_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), Meter (TempoMap::default_meter())
+MeterSection::MeterSection (const XMLNode& node, const samplecnt_t sample_rate)
+ : MetricSection (0.0, 0, MusicTime, false, sample_rate), Meter (TempoMap::default_meter())
{
- XMLProperty const * prop;
- BBT_Time start;
- LocaleGuard lg;
- const XMLProperty *prop;
- BBT_Time bbt;
- double pulse = 0.0;
- double beat = 0.0;
- framepos_t frame = 0;
pair<double, BBT_Time> start;
+ start.first = 0.0;
- if ((prop = node.property ("start")) != 0) {
- if (sscanf (prop->value().c_str(), "%" PRIu32 "|%" PRIu32 "|%" PRIu32,
- &bbt.bars,
- &bbt.beats,
- &bbt.ticks) < 3) {
- error << _("MeterSection XML node has an illegal \"start\" value") << endmsg;
- } else {
+ std::string bbt_str;
+ if (node.get_property ("start", bbt_str)) {
+ if (string_to_bbt_time (bbt_str, start.second)) {
/* legacy session - start used to be in bbt*/
info << _("Legacy session detected - MeterSection XML node will be altered.") << endmsg;
- pulse = -1.0;
- }
- }
-
- if ((prop = node.property ("pulse")) != 0) {
- if (sscanf (prop->value().c_str(), "%lf", &pulse) != 1) {
- error << _("MeterSection XML node has an illegal \"pulse\" value") << endmsg;
+ set_pulse (-1.0);
+ } else {
+ error << _("MeterSection XML node has an illegal \"start\" value") << endmsg;
}
}
- set_pulse (pulse);
- if ((prop = node.property ("beat")) != 0) {
- if (sscanf (prop->value().c_str(), "%lf", &beat) != 1) {
- error << _("MeterSection XML node has an illegal \"beat\" value") << endmsg;
- }
- }
+ MetricSection::set_state (node, Stateful::loading_state_version);
- start.first = beat;
+ node.get_property ("beat", start.first);
- if ((prop = node.property ("bbt")) == 0) {
+ if (node.get_property ("bbt", bbt_str)) {
+ if (!string_to_bbt_time (bbt_str, start.second)) {
+ error << _("MeterSection XML node has an illegal \"bbt\" value") << endmsg;
+ throw failed_constructor();
+ }
+ } else {
warning << _("MeterSection XML node has no \"bbt\" property") << endmsg;
- } else if (sscanf (prop->value().c_str(), "%" PRIu32 "|%" PRIu32 "|%" PRIu32,
- &bbt.bars,
- &bbt.beats,
- &bbt.ticks) < 3) {
- error << _("MeterSection XML node has an illegal \"bbt\" value") << endmsg;
- throw failed_constructor();
}
- start.second = bbt;
set_beat (start);
- 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;
- } else {
- set_frame (frame);
- }
- }
-
/* beats-per-bar is old; divisions-per-bar is new */
- if ((prop = node.property ("divisions-per-bar")) == 0) {
- if ((prop = node.property ("beats-per-bar")) == 0) {
+ if (!node.get_property ("divisions-per-bar", _divisions_per_bar)) {
+ if (!node.get_property ("beats-per-bar", _divisions_per_bar)) {
error << _("MeterSection XML node has no \"beats-per-bar\" or \"divisions-per-bar\" property") << endmsg;
throw failed_constructor();
}
}
- if (sscanf (prop->value().c_str(), "%lf", &_divisions_per_bar) != 1 || _divisions_per_bar < 0.0) {
+
+ if (_divisions_per_bar < 0.0) {
error << _("MeterSection XML node has an illegal \"divisions-per-bar\" value") << endmsg;
throw failed_constructor();
}
- if ((prop = node.property ("note-type")) == 0) {
+ if (!node.get_property ("note-type", _note_type)) {
error << _("MeterSection XML node has no \"note-type\" property") << endmsg;
throw failed_constructor();
}
- if (sscanf (prop->value().c_str(), "%lf", &_note_type) != 1 || _note_type < 0.0) {
- error << _("MeterSection XML node has an illegal \"note-type\" value") << endmsg;
- throw failed_constructor();
- }
- if ((prop = node.property ("movable")) == 0) {
- error << _("MeterSection XML node has no \"movable\" property") << endmsg;
+ if (_note_type < 0.0) {
+ error << _("MeterSection XML node has an illegal \"note-type\" value") << endmsg;
throw failed_constructor();
}
-
- set_movable (string_is_affirmative (prop->value()));
-
- if ((prop = node.property ("lock-style")) == 0) {
- warning << _("MeterSection XML node has no \"lock-style\" property") << endmsg;
- if (movable()) {
- set_position_lock_style (MusicTime);
- } else {
- set_position_lock_style (AudioTime);
- }
- } else {
- set_position_lock_style (PositionLockStyle (string_2_enum (prop->value(), position_lock_style())));
- }
}
XMLNode&
MeterSection::get_state() const
{
XMLNode *root = new XMLNode (xml_state_node_name);
- char buf[256];
- LocaleGuard lg;
-
- snprintf (buf, sizeof (buf), "%lf", pulse());
- root->add_property ("pulse", buf);
- snprintf (buf, sizeof (buf), "%" PRIu32 "|%" PRIu32 "|%" PRIu32,
- bbt().bars,
- bbt().beats,
- bbt().ticks);
- root->add_property ("bbt", buf);
- snprintf (buf, sizeof (buf), "%lf", beat());
- root->add_property ("beat", buf);
- snprintf (buf, sizeof (buf), "%f", _note_type);
- root->add_property ("note-type", buf);
- snprintf (buf, sizeof (buf), "%li", frame());
- root->add_property ("frame", buf);
- root->add_property ("lock-style", enum_2_string (position_lock_style()));
- snprintf (buf, sizeof (buf), "%f", _divisions_per_bar);
- root->add_property ("divisions-per-bar", buf);
- snprintf (buf, sizeof (buf), "%s", movable()?"yes":"no");
- root->add_property ("movable", buf);
+
+ MetricSection::add_state_to_node (*root);
+
+ std::string bbt_str;
+ bbt_time_to_string (_bbt, bbt_str);
+ root->set_property ("bbt", bbt_str);
+ root->set_property ("beat", beat());
+ root->set_property ("note-type", _note_type);
+ root->set_property ("divisions-per-bar", _divisions_per_bar);
return *root;
}
/*
Tempo Map Overview
- Tempo can be thought of as a source of the musical pulse.
- Meters divide that pulse into measures and beats.
- Tempo pulses can be divided to be in sympathy with the meter, but this does not affect the beat
- at any particular time.
- Note that Tempo::beats_per_minute() has nothing to do with musical beats.
- It should rather be thought of as tempo note divisions per minute.
+ 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
- TempoSections, which are nice to think of in whole pulses per minute,
- and MeterSecions which divide tempo pulses into measures (via divisions_per_bar)
- and beats (via note_divisor) are used to form a tempo map.
- TempoSections and MeterSections may be locked to either audio or music (position lock style).
- We construct the tempo map by first using the frame or pulse position (depending on position lock style) of each tempo.
- We then use this pulse/frame layout to find the beat & pulse or frame position of each meter (again depending on lock style).
+ 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).
- Having done this, we can now find any one of tempo, beat, frame or pulse if a beat, frame, pulse or tempo is known.
+ 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.
- 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.
+ 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.
- A tempo locked to music is locked to musical pulses.
- A meter locked to music is locked to beats.
+ 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).
- Recomputing the tempo map is the process where the 'missing' position
- (tempo pulse or meter pulse & beat in the case of AudioTime, frame for MusicTime) is calculated.
+ 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,
reordering is frequent. Care must be taken to keep _metrics in a solved state.
- Solved means ordered by frame or pulse with frame-accurate precision (see check_solved()).
+ Solved means ordered by sample or pulse with sample-accurate precision (see check_solved()).
+
+ Music and Audio
+
+ Music and audio-locked objects may seem interchangeable on the surface, but when translating
+ 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 sample occupying the start of a music-locked object on 1|3|0, it does not
+ mean that this sample is the actual location in time of 1|3|0.
+
+ You cannot use a sample measurement to determine beat distance except under special circumstances
+ (e.g. where the user has requested that a beat lie on a SMPTE sample or if the tempo is known to be constant over the duration).
+
+ This means is that a user operating on a musical grid must supply the desired beat position and/or current beat quantization in order for the
+ sample space the user is operating at to be translated correctly to the object.
+
+ The current approach is to interpret the supplied sample using the grid division the user has currently selected.
+ If the user has no musical grid set, they are actually operating in sample space (even SMPTE samples are rounded to audio sample), so
+ the supplied audio sample is interpreted as the desired musical location (beat_at_sample()).
+
+ tldr: Beat, being a function of time, has nothing to do with sample rate, but time quantization can get in the way of precision.
+
+ When sample_at_beat() is called, the position calculation is performed in pulses and minutes.
+ The result is rounded to audio samples.
+ When beat_at_sample() is called, the sample is converted to minutes, with no rounding performed on the result.
+
+ So :
+ sample_at_beat (beat_at_sample (sample)) == sample
+ but :
+ beat_at_sample (sample_at_beat (beat)) != beat due to the time quantization of sample_at_beat().
+
+ Doing the second one will result in a beat distance error of up to 0.5 audio samples.
+ samples_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 samples last.
+
+ 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 {
bool operator() (const MetricSection* a, const MetricSection* b) {
struct MetricSectionFrameSorter {
bool operator() (const MetricSection* a, const MetricSection* b) {
- return a->frame() < b->frame();
+ return a->sample() < b->sample();
}
};
-TempoMap::TempoMap (framecnt_t fr)
+TempoMap::TempoMap (samplecnt_t fr)
{
- _frame_rate = fr;
+ _sample_rate = fr;
BBT_Time start (1, 1, 0);
- TempoSection *t = new TempoSection ((framepos_t) 0, _default_tempo.beats_per_minute(), _default_tempo.note_type(), TempoSection::Constant);
- MeterSection *m = new MeterSection ((framepos_t) 0, 0.0, start, _default_meter.divisions_per_bar(), _default_meter.note_divisor());
+ 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 */
+ /* note: sample time is correct (zero) for both of these */
_metrics.push_back (t);
_metrics.push_back (m);
}
+TempoMap&
+TempoMap::operator= (TempoMap const & other)
+{
+ if (&other != this) {
+ Glib::Threads::RWLock::ReaderLock lr (other.lock);
+ Glib::Threads::RWLock::WriterLock lm (lock);
+ _sample_rate = other._sample_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 const * const ts = dynamic_cast<TempoSection const * const> (*m);
+ MeterSection const * const ms = dynamic_cast<MeterSection const * const> (*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();
}
+samplepos_t
+TempoMap::sample_at_minute (const double time) const
+{
+ return (samplepos_t) floor ((time * 60.0 * _sample_rate) + 0.5);
+}
+
+double
+TempoMap::minute_at_sample (const samplepos_t sample) const
+{
+ return (sample / (double) _sample_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 (tempo.sample() == (*i)->sample()) {
+ if (!(*i)->initial()) {
delete (*i);
_metrics.erase (i);
return true;
bool
TempoMap::remove_meter_locked (const MeterSection& meter)
{
- Metrics::iterator i;
- for (i = _metrics.begin(); i != _metrics.end(); ++i) {
- TempoSection* t = 0;
- if ((t = dynamic_cast<TempoSection*> (*i)) != 0) {
- if (meter.frame() == (*i)->frame()) {
- if (t->locked_to_meter()) {
+ if (meter.position_lock_style() == AudioTime) {
+ /* remove meter-locked tempo */
+ for (Metrics::iterator i = _metrics.begin(); i != _metrics.end(); ++i) {
+ TempoSection* t = 0;
+ if ((t = dynamic_cast<TempoSection*> (*i)) != 0) {
+ if (t->locked_to_meter() && meter.sample() == (*i)->sample()) {
delete (*i);
_metrics.erase (i);
break;
}
}
- for (i = _metrics.begin(); i != _metrics.end(); ++i) {
+ 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 (meter.sample() == (*i)->sample()) {
+ if (!(*i)->initial()) {
delete (*i);
_metrics.erase (i);
return true;
if ((m->bbt().beats != 1) || (m->bbt().ticks != 0)) {
- pair<double, BBT_Time> corrected = make_pair (m->pulse(), m->bbt());
+ pair<double, BBT_Time> corrected = make_pair (m->beat(), m->bbt());
corrected.second.beats = 1;
corrected.second.ticks = 0;
- corrected.first = bbt_to_beats_locked (_metrics, corrected.second);
+ corrected.first = beat_at_bbt_locked (_metrics, corrected.second);
warning << string_compose (_("Meter changes can only be positioned on the first beat of a bar. Moving from %1 to %2"),
m->bbt(), corrected.second) << endmsg;
//m->set_pulse (corrected);
/* Tempo sections */
bool const ipm = insert_tempo->position_lock_style() == MusicTime;
- if ((ipm && tempo->pulse() == insert_tempo->pulse()) || (!ipm && tempo->frame() == insert_tempo->frame())) {
+ if ((ipm && tempo->pulse() == insert_tempo->pulse()) || (!ipm && tempo->sample() == insert_tempo->sample())) {
- 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);
bool const ipm = insert_meter->position_lock_style() == MusicTime;
- if ((ipm && meter->beat() == insert_meter->beat()) || (!ipm && meter->frame() == insert_meter->frame())) {
+ if ((ipm && meter->beat() == insert_meter->beat()) || (!ipm && meter->sample() == insert_meter->sample())) {
- 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())) {
+ if ((ipm && meter->beat() > insert_meter->beat()) || (!ipm && meter->sample() > insert_meter->sample())) {
+ break;
+ }
+ } else {
+ if (prev_t && prev_t->locked_to_meter() && (!ipm && prev_t->sample() == insert_meter->sample())) {
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->sample() > insert_tempo->sample())
+ || (lm && tempo->pulse() > insert_tempo->pulse())) {
break;
}
}
}
_metrics.insert (i, section);
- //dump (_metrics, std::cerr);
+ //dump (std::cout);
}
}
-
-void
-TempoMap::replace_tempo (const TempoSection& ts, const Tempo& tempo, const double& pulse, TempoSection::Type type)
+/* user supplies the exact pulse if pls == MusicTime */
+TempoSection*
+TempoMap::add_tempo (const Tempo& tempo, const double& pulse, const samplepos_t sample, 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;
{
Glib::Threads::RWLock::WriterLock lm (lock);
- TempoSection& first (first_tempo());
- if (ts.pulse() != first.pulse()) {
- remove_tempo_locked (ts);
- add_tempo_locked (tempo, pulse, true, type);
- } else {
- first.set_type (type);
- {
- /* cannot move the first tempo section */
- *static_cast<Tempo*>(&first) = tempo;
- recompute_map (_metrics);
- }
- }
+ /* here we default to not clamped for a new tempo section. preference? */
+ ts = add_tempo_locked (tempo, pulse, minute_at_sample (sample), pls, true, false, false);
+
+ recompute_map (_metrics);
}
PropertyChanged (PropertyChange ());
+
+ return ts;
}
void
-TempoMap::replace_tempo (const TempoSection& ts, const Tempo& tempo, const framepos_t& frame, TempoSection::Type type)
+TempoMap::replace_tempo (TempoSection& ts, const Tempo& tempo, const double& pulse, const samplepos_t sample, 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;
+ }
+
+ bool const locked_to_meter = ts.locked_to_meter();
+ bool const ts_clamped = ts.clamped();
+ 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, frame, true, type);
+ 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_sample (sample), pls, true, locked_to_meter, ts_clamped);
+ /* enforce clampedness of next tempo section */
+ TempoSection* next_t = next_tempo_section_locked (_metrics, new_ts);
+ if (next_t && next_t->clamped()) {
+ next_t->set_note_types_per_minute (new_ts->end_note_types_per_minute());
+ }
+ }
+
} else {
- first.set_type (type);
first.set_pulse (0.0);
+ first.set_minute (minute_at_sample (sample));
first.set_position_lock_style (AudioTime);
+ first.set_locked_to_meter (true);
+ first.set_clamped (ts_clamped);
{
/* cannot move the first tempo section */
*static_cast<Tempo*>(&first) = tempo;
- recompute_map (_metrics);
}
}
+ recompute_map (_metrics);
}
PropertyChanged (PropertyChange ());
}
TempoSection*
-TempoMap::add_tempo (const Tempo& tempo, const double& pulse, ARDOUR::TempoSection::Type type)
+TempoMap::add_tempo_locked (const Tempo& tempo, double pulse, double minute
+ , PositionLockStyle pls, bool recompute, bool locked_to_meter, bool clamped)
{
- TempoSection* ts = 0;
- {
- Glib::Threads::RWLock::WriterLock lm (lock);
- ts = add_tempo_locked (tempo, pulse, true, type);
+ TempoSection* t = new TempoSection (pulse, minute, tempo, pls, _sample_rate);
+ t->set_locked_to_meter (locked_to_meter);
+ t->set_clamped (clamped);
+
+ do_insert (t);
+
+ TempoSection* prev_tempo = 0;
+ for (Metrics::iterator i = _metrics.begin(); i != _metrics.end(); ++i) {
+ TempoSection* const this_t = dynamic_cast<TempoSection*>(*i);
+ if (this_t) {
+ if (this_t == t) {
+ if (prev_tempo && prev_tempo->type() == TempoSection::Ramp) {
+ prev_tempo->set_end_note_types_per_minute (t->note_types_per_minute());
+ }
+ break;
+ }
+ prev_tempo = this_t;
+ }
}
- PropertyChanged (PropertyChange ());
+ if (recompute) {
+ if (pls == AudioTime) {
+ solve_map_minute (_metrics, t, t->minute());
+ } else {
+ solve_map_pulse (_metrics, t, t->pulse());
+ }
+ recompute_meters (_metrics);
+ }
- return ts;
+ return t;
}
-TempoSection*
-TempoMap::add_tempo (const Tempo& tempo, const framepos_t& frame, ARDOUR::TempoSection::Type type)
+MeterSection*
+TempoMap::add_meter (const Meter& meter, const Timecode::BBT_Time& where, samplepos_t sample, PositionLockStyle pls)
{
- TempoSection* ts = 0;
+ MeterSection* m = 0;
{
Glib::Threads::RWLock::WriterLock lm (lock);
- ts = add_tempo_locked (tempo, frame, true, type);
+ m = add_meter_locked (meter, where, sample, pls, true);
}
- PropertyChanged (PropertyChange ());
-
- return ts;
-}
-
-TempoSection*
-TempoMap::add_tempo_locked (const Tempo& tempo, double pulse, bool recompute, ARDOUR::TempoSection::Type type)
-{
- TempoSection* t = new TempoSection (pulse, tempo.beats_per_minute(), tempo.note_type(), type);
-
- do_insert (t);
-
- if (recompute) {
- solve_map (_metrics, t, t->pulse());
- recompute_meters (_metrics);
- }
-
- return t;
-}
-
-TempoSection*
-TempoMap::add_tempo_locked (const Tempo& tempo, framepos_t frame, bool recompute, ARDOUR::TempoSection::Type type)
-{
- TempoSection* t = new TempoSection (frame, tempo.beats_per_minute(), tempo.note_type(), type);
-
- do_insert (t);
-
- if (recompute) {
- solve_map (_metrics, t, t->frame());
- recompute_meters (_metrics);
- }
-
- return t;
-}
-
-void
-TempoMap::replace_meter (const MeterSection& ms, const Meter& meter, const BBT_Time& where)
-{
- {
- Glib::Threads::RWLock::WriterLock lm (lock);
-
- if (ms.movable()) {
- remove_meter_locked (ms);
- add_meter_locked (meter, bbt_to_beats_locked (_metrics, where), where, true);
- } else {
- MeterSection& first (first_meter());
- /* cannot move the first meter section */
- *static_cast<Meter*>(&first) = meter;
- first.set_position_lock_style (AudioTime);
- }
- recompute_map (_metrics);
+#ifndef NDEBUG
+ if (DEBUG_ENABLED(DEBUG::TempoMap)) {
+ dump (std::cerr);
}
+#endif
PropertyChanged (PropertyChange ());
+ return m;
}
void
-TempoMap::replace_meter (const MeterSection& ms, const Meter& meter, const framepos_t& frame)
+TempoMap::replace_meter (const MeterSection& ms, const Meter& meter, const BBT_Time& where, samplepos_t sample, PositionLockStyle pls)
{
{
Glib::Threads::RWLock::WriterLock lm (lock);
- const double beat = ms.beat();
- const BBT_Time bbt = ms.bbt();
-
- if (ms.movable()) {
+ if (!ms.initial()) {
remove_meter_locked (ms);
- add_meter_locked (meter, frame, beat, bbt, true);
+ add_meter_locked (meter, where, sample, pls, true);
} else {
MeterSection& first (first_meter());
TempoSection& first_t (first_tempo());
*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_sample (sample));
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);
}
- recompute_map (_metrics);
- }
- PropertyChanged (PropertyChange ());
-}
-
-
-MeterSection*
-TempoMap::add_meter (const Meter& meter, const double& beat, const BBT_Time& where)
-{
- MeterSection* m = 0;
- {
- Glib::Threads::RWLock::WriterLock lm (lock);
- m = add_meter_locked (meter, beat, where, true);
- }
-
-
-#ifndef NDEBUG
- if (DEBUG_ENABLED(DEBUG::TempoMap)) {
- dump (_metrics, std::cerr);
}
-#endif
PropertyChanged (PropertyChange ());
-
- return m;
}
MeterSection*
-TempoMap::add_meter (const Meter& meter, const framepos_t& frame, const double& beat, const Timecode::BBT_Time& where)
+TempoMap::add_meter_locked (const Meter& meter, const BBT_Time& bbt, samplepos_t sample, PositionLockStyle pls, bool recompute)
{
- MeterSection* m = 0;
- {
- Glib::Threads::RWLock::WriterLock lm (lock);
- m = add_meter_locked (meter, frame, beat, where, true);
- }
-
-
-#ifndef NDEBUG
- if (DEBUG_ENABLED(DEBUG::TempoMap)) {
- dump (_metrics, std::cerr);
+ double const minute_at_bbt = minute_at_bbt_locked (_metrics, bbt);
+ const MeterSection& prev_m = meter_section_at_minute_locked (_metrics, minute_at_bbt - minute_at_sample (1));
+ double const pulse = ((bbt.bars - prev_m.bbt().bars) * (prev_m.divisions_per_bar() / prev_m.note_divisor())) + prev_m.pulse();
+ /* the natural time of the BBT position */
+ double const time_minutes = minute_at_pulse_locked (_metrics, pulse);
+
+ if (pls == AudioTime) {
+ /* add meter-locked tempo at the natural time in the current map (sample may differ). */
+ Tempo const tempo_at_time = tempo_at_minute_locked (_metrics, time_minutes);
+ TempoSection* mlt = add_tempo_locked (tempo_at_time, pulse, time_minutes, AudioTime, true, true, false);
+
+ if (!mlt) {
+ return 0;
+ }
}
-#endif
-
- PropertyChanged (PropertyChange ());
-
- return m;
-}
+ /* still using natural time for the position, ignoring lock style. */
+ MeterSection* new_meter = new MeterSection (pulse, time_minutes, beat_at_bbt_locked (_metrics, bbt), bbt, meter.divisions_per_bar(), meter.note_divisor(), pls, _sample_rate);
-MeterSection*
-TempoMap::add_meter_locked (const Meter& meter, double beat, BBT_Time where, bool recompute)
-{
- /* a new meter always starts a new bar on the first beat. so
- round the start time appropriately. remember that
- `where' is based on the existing tempo map, not
- the result after we insert the new meter.
-
- */
+ bool solved = false;
- if (where.beats != 1) {
- where.beats = 1;
- where.bars++;
- }
- /* new meters *always* start on a beat. */
- where.ticks = 0;
- const double pulse = pulse_at_beat_locked (_metrics, beat);
- MeterSection* new_meter = new MeterSection (pulse, beat, where, meter.divisions_per_bar(), meter.note_divisor());
do_insert (new_meter);
if (recompute) {
- solve_map (_metrics, new_meter, where);
- }
-
- return new_meter;
-}
-
-MeterSection*
-TempoMap::add_meter_locked (const Meter& meter, framepos_t frame, double beat, Timecode::BBT_Time where, bool recompute)
-{
- MeterSection* new_meter = new MeterSection (frame, beat, where, meter.divisions_per_bar(), meter.note_divisor());
- TempoSection* t = 0;
- double pulse = pulse_at_frame_locked (_metrics, frame);
- new_meter->set_pulse (pulse);
- do_insert (new_meter);
-
- /* add meter-locked tempo */
- t = add_tempo_locked (tempo_at_locked (_metrics, frame), frame, true, TempoSection::Ramp);
- t->set_locked_to_meter (true);
+ if (pls == AudioTime) {
+ /* now set the audio locked meter's position to sample */
+ solved = solve_map_minute (_metrics, new_meter, minute_at_sample (sample));
+ /* we failed, most likely due to some impossible sample requirement wrt audio-locked tempi.
+ fudge sample so that the meter ends up at its BBT position instead.
+ */
+ if (!solved) {
+ solved = solve_map_minute (_metrics, new_meter, minute_at_sample (prev_m.sample() + 1));
+ }
+ } else {
+ solved = solve_map_bbt (_metrics, new_meter, bbt);
+ /* required due to resetting the pulse of meter-locked tempi above.
+ Arguably solve_map_bbt() should use solve_map_pulse (_metrics, TempoSection) instead,
+ but afaict this cannot cause the map to be left unsolved (these tempi are all audio locked).
+ */
+ recompute_map (_metrics);
+ }
+ }
- if (recompute) {
- solve_map (_metrics, new_meter, frame);
+ if (!solved && recompute) {
+ /* if this has failed to solve, there is little we can do other than to ensure that
+ the new map is recalculated.
+ */
+ warning << "Adding meter may have left the tempo map unsolved." << endmsg;
+ recompute_map (_metrics);
}
return new_meter;
}
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 (samplepos_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;
for (first = 0, i = _metrics.begin(), prev = 0; i != _metrics.end(); ++i) {
- if ((*i)->frame() > where) {
+ if ((*i)->sample() > where) {
break;
}
if (!t->active()) {
continue;
}
- if (!t->movable()) {
+ if (t->initial()) {
return *t;
}
}
if (!t->active()) {
continue;
}
- if (!t->movable()) {
+ if (t->initial()) {
return *t;
}
}
return *t;
}
void
-TempoMap::recompute_tempos (Metrics& metrics)
+TempoMap::recompute_tempi (Metrics& metrics)
{
TempoSection* prev_t = 0;
for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
TempoSection* t;
- if ((t = dynamic_cast<TempoSection*> (*i)) != 0) {
+ if ((*i)->is_tempo()) {
+ t = static_cast<TempoSection*> (*i);
if (!t->active()) {
continue;
}
- if (!t->movable()) {
+ if (t->initial()) {
if (!prev_t) {
t->set_pulse (0.0);
prev_t = t;
continue;
}
}
+
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.
the current approach is to use a meter's bbt time as its base position unit.
- this means that a meter's beat may change, but its bbt may not.
an audio-locked meter requires a recomputation of pulse and beat (but not bbt),
- while a music-locked meter requires recomputations of frame pulse and beat (but not bbt)
+ while a music-locked meter requires recomputations of sample pulse and beat (but not bbt)
*/
void
TempoMap::recompute_meters (Metrics& metrics)
MeterSection* prev_m = 0;
for (Metrics::const_iterator mi = metrics.begin(); mi != metrics.end(); ++mi) {
- if ((meter = dynamic_cast<MeterSection*> (*mi)) != 0) {
+ if (!(*mi)->is_tempo()) {
+ meter = static_cast<MeterSection*> (*mi);
if (meter->position_lock_style() == AudioTime) {
double pulse = 0.0;
pair<double, BBT_Time> b_bbt;
TempoSection* meter_locked_tempo = 0;
for (Metrics::const_iterator ii = metrics.begin(); ii != metrics.end(); ++ii) {
TempoSection* t;
- if ((t = dynamic_cast<TempoSection*> (*ii)) != 0) {
- if ((t->locked_to_meter() || !t->movable()) && t->frame() == meter->frame()) {
+ if ((*ii)->is_tempo()) {
+ t = static_cast<TempoSection*> (*ii);
+ if (t->locked_to_meter() && t->sample() == meter->sample()) {
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());
}
}
if (meter_locked_tempo) {
meter_locked_tempo->set_pulse (pulse);
- recompute_tempos (metrics);
}
meter->set_beat (b_bbt);
meter->set_pulse (pulse);
} else {
/* MusicTime */
double pulse = 0.0;
- pair<double, BBT_Time> new_beat;
+ pair<double, BBT_Time> b_bbt;
if (prev_m) {
const 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 */
- new_beat = make_pair (beats + 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));
} else {
- new_beat = make_pair (beats + prev_m->beat(), meter->bbt());
+ b_bbt = make_pair (beats + prev_m->beat(), meter->bbt());
}
pulse = (beats / prev_m->note_divisor()) + prev_m->pulse();
} else {
/* shouldn't happen - the first is audio-locked */
pulse = pulse_at_beat_locked (metrics, meter->beat());
- new_beat = make_pair (meter->beat(), meter->bbt());
+ b_bbt = make_pair (meter->beat(), meter->bbt());
}
- meter->set_beat (new_beat);
+ 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;
}
}
- //dump (_metrics, std::cerr;
}
void
-TempoMap::recompute_map (Metrics& metrics, framepos_t end)
+TempoMap::recompute_map (Metrics& metrics, samplepos_t end)
{
/* 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;
}
- recompute_tempos (metrics);
+ recompute_tempi (metrics);
recompute_meters (metrics);
}
TempoMetric
-TempoMap::metric_at (framepos_t frame, Metrics::const_iterator* last) const
+TempoMap::metric_at (samplepos_t sample, Metrics::const_iterator* last) const
{
Glib::Threads::RWLock::ReaderLock lm (lock);
TempoMetric m (first_meter(), first_tempo());
+ if (last) {
+ *last = ++_metrics.begin();
+ }
+
/* at this point, we are *guaranteed* to have m.meter and m.tempo pointing
at something, because we insert the default tempo and meter during
TempoMap construction.
for (Metrics::const_iterator i = _metrics.begin(); i != _metrics.end(); ++i) {
- if ((*i)->frame() > frame) {
+ if ((*i)->sample() > sample) {
break;
}
for (Metrics::const_iterator i = _metrics.begin(); i != _metrics.end(); ++i) {
MeterSection* mw;
- if ((mw = dynamic_cast<MeterSection*> (*i)) != 0) {
+ if (!(*i)->is_tempo()) {
+ mw = static_cast<MeterSection*> (*i);
BBT_Time section_start (mw->bbt());
if (section_start.bars > bbt.bars || (section_start.bars == bbt.bars && section_start.beats > bbt.beats)) {
return m;
}
+/** Returns the BBT (meter-based) beat corresponding to the supplied sample, possibly returning a negative value.
+ * @param sample The session sample position.
+ * @return The beat duration according to the tempo map at the supplied sample.
+ *
+ * If the supplied sample 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).
+ *
+ * This function uses both tempo and meter.
+ */
double
-TempoMap::pulse_at_beat_locked (const Metrics& metrics, const double& beat) const
+TempoMap::beat_at_sample (const samplecnt_t sample) const
+{
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+
+ return beat_at_minute_locked (_metrics, minute_at_sample (sample));
+}
+
+/* This function uses both tempo and meter.*/
+double
+TempoMap::beat_at_minute_locked (const Metrics& metrics, const double& minute) const
{
+ 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) {
- MeterSection* m;
- if ((m = dynamic_cast<MeterSection*> (*i)) != 0) {
- if (prev_m && m->beat() > beat) {
+ if (!(*i)->is_tempo()) {
+ if (prev_m && (*i)->minute() > minute) {
+ next_m = static_cast<MeterSection*> (*i);
break;
}
- prev_m = m;
+ prev_m = static_cast<MeterSection*> (*i);
}
+ }
+ 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 next_m->beat();
}
- double const ret = prev_m->pulse() + ((beat - prev_m->beat()) / prev_m->note_divisor());
- return ret;
+
+ return beat;
}
-double
-TempoMap::pulse_at_beat (const double& beat) const
+/** Returns the sample corresponding to the supplied BBT (meter-based) beat.
+ * @param beat The BBT (meter-based) beat.
+ * @return The sample duration according to the tempo map at the supplied BBT (meter-based) beat.
+ *
+ * This function uses both tempo and meter.
+ */
+samplepos_t
+TempoMap::sample_at_beat (const double& beat) const
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- return pulse_at_beat_locked (_metrics, beat);
+
+ return sample_at_minute (minute_at_beat_locked (_metrics, beat));
}
+/* meter & tempo section based */
double
-TempoMap::beat_at_pulse_locked (const Metrics& metrics, const double& pulse) const
+TempoMap::minute_at_beat_locked (const Metrics& metrics, const double& beat) const
{
MeterSection* prev_m = 0;
+ TempoSection* prev_t = 0;
+
+ MeterSection* m;
for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
- MeterSection* m;
- if ((m = dynamic_cast<MeterSection*> (*i)) != 0) {
- if (prev_m && m->pulse() > pulse) {
- if (((pulse - prev_m->pulse()) * prev_m->note_divisor()) + prev_m->beat() > m->beat()) {
- break;
- }
+ if (!(*i)->is_tempo()) {
+ m = static_cast<MeterSection*> (*i);
+ if (prev_m && m->beat() > beat) {
+ break;
}
prev_m = m;
}
}
+ assert (prev_m);
- double const ret = ((pulse - prev_m->pulse()) * prev_m->note_divisor()) + prev_m->beat();
- return ret;
+ 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;
+ }
+ prev_t = t;
+ }
+
+ }
+ assert (prev_t);
+
+ return prev_t->minute_at_pulse (((beat - prev_m->beat()) / prev_m->note_divisor()) + prev_m->pulse());
}
-double
-TempoMap::beat_at_pulse (const double& pulse) const
+/** Returns a Tempo corresponding to the supplied sample position.
+ * @param sample The audio sample.
+ * @return a Tempo according to the tempo map at the supplied sample.
+ *
+ */
+Tempo
+TempoMap::tempo_at_sample (const samplepos_t sample) const
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- return beat_at_pulse_locked (_metrics, pulse);
+
+ return tempo_at_minute_locked (_metrics, minute_at_sample (sample));
}
-/* tempo section based */
-double
-TempoMap::pulse_at_frame_locked (const Metrics& metrics, const framecnt_t& frame) const
+Tempo
+TempoMap::tempo_at_minute_locked (const Metrics& metrics, const double& minute) const
{
- /* HOLD (at least) THE READER LOCK */
TempoSection* prev_t = 0;
+ TempoSection* t;
+
for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
- TempoSection* t;
- if ((t = dynamic_cast<TempoSection*> (*i)) != 0) {
+ if ((*i)->is_tempo()) {
+ t = static_cast<TempoSection*> (*i);
if (!t->active()) {
continue;
}
- if (prev_t && t->frame() > frame) {
- /*the previous ts is the one containing the frame */
- const double ret = prev_t->pulse_at_frame (frame, _frame_rate);
- return ret;
+ if ((prev_t) && t->minute() > minute) {
+ /* t is the section past sample */
+ return prev_t->tempo_at_minute (minute);
}
prev_t = t;
}
}
- /* treated as constant for this ts */
- const double pulses_in_section = (frame - prev_t->frame()) / prev_t->frames_per_pulse (_frame_rate);
-
- return pulses_in_section + prev_t->pulse();
+ return Tempo (prev_t->note_types_per_minute(), prev_t->note_type(), prev_t->end_note_types_per_minute());
}
-double
-TempoMap::pulse_at_frame (const framecnt_t& frame) const
+/** returns the sample at which the supplied tempo occurs, or
+ * the sample of the last tempo section (search exhausted)
+ * only the position of the first occurence will be returned
+ * (extend me)
+*/
+samplepos_t
+TempoMap::sample_at_tempo (const Tempo& tempo) const
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- return pulse_at_frame_locked (_metrics, frame);
+
+ return sample_at_minute (minute_at_tempo_locked (_metrics, tempo));
}
-/* tempo section based */
-framecnt_t
-TempoMap::frame_at_pulse_locked (const Metrics& metrics, const double& pulse) const
+double
+TempoMap::minute_at_tempo_locked (const Metrics& metrics, const Tempo& tempo) const
{
- /* HOLD THE READER LOCK */
+ TempoSection* prev_t = 0;
+ const double tempo_bpm = tempo.note_types_per_minute();
- const TempoSection* prev_t = 0;
+ Metrics::const_iterator i;
- for (Metrics::const_iterator 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);
- if ((t = dynamic_cast<TempoSection*> (*i)) != 0) {
if (!t->active()) {
continue;
}
- if (prev_t && t->pulse() > pulse) {
- return prev_t->frame_at_pulse (pulse, _frame_rate);
+
+
+
+ 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;
}
}
- /* must be treated as constant, irrespective of _type */
- double const pulses_in_section = pulse - prev_t->pulse();
- double const dtime = pulses_in_section * prev_t->frames_per_pulse (_frame_rate);
-
- framecnt_t const ret = (framecnt_t) floor (dtime) + prev_t->frame();
- return ret;
+ return prev_t->minute();
}
-framecnt_t
-TempoMap::frame_at_pulse (const double& pulse) const
+Tempo
+TempoMap::tempo_at_pulse_locked (const Metrics& metrics, const double& pulse) const
{
- Glib::Threads::RWLock::ReaderLock lm (lock);
- return frame_at_pulse_locked (_metrics, pulse);
-}
+ TempoSection* prev_t = 0;
-/* meter section based */
-double
-TempoMap::beat_at_frame_locked (const Metrics& metrics, const framecnt_t& frame) const
-{
- const TempoSection& ts = tempo_section_at_locked (metrics, frame);
- MeterSection* prev_m = 0;
- MeterSection* next_m = 0;
+ TempoSection* t;
for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
- MeterSection* m;
- if ((m = dynamic_cast<MeterSection*> (*i)) != 0) {
- if (prev_m && m->frame() > frame) {
- next_m = m;
- break;
+ if ((*i)->is_tempo()) {
+ t = static_cast<TempoSection*> (*i);
+ if (!t->active()) {
+ continue;
}
- prev_m = m;
+ if ((prev_t) && t->pulse() > pulse) {
+ /* t is the section past sample */
+ return prev_t->tempo_at_pulse (pulse);
+ }
+ prev_t = t;
}
}
- if (frame < prev_m->frame()) {
- return 0.0;
- }
- const double beat = prev_m->beat() + (ts.pulse_at_frame (frame, _frame_rate) - prev_m->pulse()) * prev_m->note_divisor();
-
- if (next_m && next_m->beat() < beat) {
- return next_m->beat();
- }
- return beat;
+ return Tempo (prev_t->note_types_per_minute(), prev_t->note_type(), prev_t->end_note_types_per_minute());
}
double
-TempoMap::beat_at_frame (const framecnt_t& frame) const
+TempoMap::pulse_at_tempo_locked (const Metrics& metrics, const Tempo& tempo) const
{
- Glib::Threads::RWLock::ReaderLock lm (lock);
- return beat_at_frame_locked (_metrics, frame);
-}
+ TempoSection* prev_t = 0;
+ const double tempo_bpm = tempo.note_types_per_minute();
-/* meter section based */
-framecnt_t
-TempoMap::frame_at_beat_locked (const Metrics& metrics, const double& beat) const
-{
- const TempoSection& prev_t = tempo_section_at_beat_locked (metrics, beat);
- MeterSection* prev_m = 0;
+ Metrics::const_iterator i;
- for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
- MeterSection* m;
- if ((m = dynamic_cast<MeterSection*> (*i)) != 0) {
- if (prev_m && m->beat() > beat) {
- break;
+ for (i = metrics.begin(); i != metrics.end(); ++i) {
+ TempoSection* t;
+ if ((*i)->is_tempo()) {
+ t = static_cast<TempoSection*> (*i);
+
+ if (!t->active()) {
+ continue;
}
- prev_m = m;
+
+ const double t_bpm = t->note_types_per_minute();
+
+ if (t_bpm == tempo_bpm) {
+ return t->pulse();
+ }
+
+ if (prev_t) {
+ const double prev_t_bpm = prev_t->note_types_per_minute();
+
+ 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_at_pulse (((beat - prev_m->beat()) / prev_m->note_divisor()) + prev_m->pulse(), _frame_rate);
+ return prev_t->pulse();
}
-framecnt_t
-TempoMap::frame_at_beat (const double& beat) const
+/** 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_quarter_note (const double& qn) const
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- return frame_at_beat_locked (_metrics, beat);
+
+ 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::bbt_to_beats_locked (const Metrics& metrics, const Timecode::BBT_Time& bbt) const
+TempoMap::quarter_note_at_tempo (const Tempo& tempo) const
{
- /* CALLER HOLDS READ LOCK */
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+
+ 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
+{
+ const MeterSection* prev_m = &meter_section_at_beat_locked (metrics, beat);
+
+ return prev_m->pulse() + ((beat - prev_m->beat()) / prev_m->note_divisor());
+}
+
+/** 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
+{
+ MeterSection* prev_m = 0;
+
+ for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
+ MeterSection* m;
+ if (!(*i)->is_tempo()) {
+ m = static_cast<MeterSection*> (*i);
+ if (prev_m && m->pulse() > pulse) {
+ 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_minute_locked (const Metrics& metrics, const double& minute) const
+{
+ /* HOLD (at least) THE READER LOCK */
+ TempoSection* prev_t = 0;
+
+ for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
+ TempoSection* t;
+ if ((*i)->is_tempo()) {
+ t = static_cast<TempoSection*> (*i);
+ if (!t->active()) {
+ continue;
+ }
+ if (prev_t && t->minute() > minute) {
+ /*the previous ts is the one containing the sample */
+ const double ret = prev_t->pulse_at_minute (minute);
+ /* audio locked section in new meter*/
+ if (t->pulse() < ret) {
+ return t->pulse();
+ }
+ return ret;
+ }
+ prev_t = t;
+ }
+ }
+
+ /* treated as constant for this ts */
+ 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();
+}
+
+/* tempo section based */
+double
+TempoMap::minute_at_pulse_locked (const Metrics& metrics, const double& pulse) const
+{
+ /* HOLD THE READER LOCK */
+
+ const TempoSection* prev_t = 0;
+
+ for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
+ TempoSection* t;
+
+ if ((*i)->is_tempo()) {
+ t = static_cast<TempoSection*> (*i);
+ if (!t->active()) {
+ continue;
+ }
+ if (prev_t && t->pulse() > pulse) {
+ 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->note_type()) / prev_t->note_types_per_minute();
+
+ 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)
+{
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+ return beat_at_bbt_locked (_metrics, bbt);
+}
+
+
+double
+TempoMap::beat_at_bbt_locked (const Metrics& metrics, const Timecode::BBT_Time& bbt) const
+{
+ /* CALLER HOLDS READ LOCK */
MeterSection* prev_m = 0;
/* because audio-locked meters have 'fake' integral beats,
there is no pulse offset here.
*/
+ MeterSection* m;
+
for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
- MeterSection* m;
- if ((m = dynamic_cast<MeterSection*> (*i)) != 0) {
+ if (!(*i)->is_tempo()) {
+ m = static_cast<MeterSection*> (*i);
if (prev_m) {
const double bars_to_m = (m->beat() - prev_m->beat()) / prev_m->divisions_per_bar();
if ((bars_to_m + (prev_m->bbt().bars - 1)) > (bbt.bars - 1)) {
return ret;
}
-double
-TempoMap::bbt_to_beats (const Timecode::BBT_Time& bbt)
+/** 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& beat)
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- return bbt_to_beats_locked (_metrics, bbt);
+ return bbt_at_beat_locked (_metrics, beat);
}
Timecode::BBT_Time
-TempoMap::beats_to_bbt_locked (const Metrics& metrics, const double& b) const
+TempoMap::bbt_at_beat_locked (const Metrics& metrics, const double& b) const
{
/* CALLER HOLDS READ LOCK */
MeterSection* prev_m = 0;
- const double beats = (b < 0.0) ? 0.0 : b;
+ const double beats = max (0.0, b);
- for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
- MeterSection* m = 0;
+ MeterSection* m = 0;
- if ((m = dynamic_cast<MeterSection*> (*i)) != 0) {
+ for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
+ if (!(*i)->is_tempo()) {
+ m = static_cast<MeterSection*> (*i);
if (prev_m) {
if (m->beat() > beats) {
/* this is the meter after the one our beat is on*/
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;
}
-Timecode::BBT_Time
-TempoMap::beats_to_bbt (const double& beats)
+/** 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::quarter_note_at_bbt (const Timecode::BBT_Time& bbt)
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- return beats_to_bbt_locked (_metrics, beats);
+
+ return pulse_at_bbt_locked (_metrics, bbt) * 4.0;
+}
+
+double
+TempoMap::quarter_note_at_bbt_rt (const Timecode::BBT_Time& bbt)
+{
+ Glib::Threads::RWLock::ReaderLock lm (lock, Glib::Threads::TRY_LOCK);
+
+ if (!lm.locked()) {
+ throw std::logic_error ("TempoMap::quarter_note_at_bbt_rt() could not lock tempo map");
+ }
+
+ return pulse_at_bbt_locked (_metrics, bbt) * 4.0;
+}
+
+double
+TempoMap::pulse_at_bbt_locked (const Metrics& metrics, const Timecode::BBT_Time& bbt) const
+{
+ /* CALLER HOLDS READ LOCK */
+
+ MeterSection* prev_m = 0;
+
+ /* because audio-locked meters have 'fake' integral beats,
+ there is no pulse offset here.
+ */
+ MeterSection* m;
+
+ for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
+ if (!(*i)->is_tempo()) {
+ m = static_cast<MeterSection*> (*i);
+ if (prev_m) {
+ if (m->bbt().bars > bbt.bars) {
+ break;
+ }
+ }
+ prev_m = m;
+ }
+ }
+
+ const double remaining_bars = bbt.bars - prev_m->bbt().bars;
+ const double remaining_pulses = remaining_bars * prev_m->divisions_per_bar() / prev_m->note_divisor();
+ const double ret = remaining_pulses + prev_m->pulse() + (((bbt.beats - 1) + (bbt.ticks / BBT_Time::ticks_per_beat)) / prev_m->note_divisor());
+
+ 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::pulse_to_bbt (const double& pulse)
+TempoMap::bbt_at_quarter_note (const double& qn)
{
Glib::Threads::RWLock::ReaderLock lm (lock);
+
+ 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
+{
MeterSection* prev_m = 0;
- for (Metrics::const_iterator i = _metrics.begin(); i != _metrics.end(); ++i) {
- MeterSection* m = 0;
+ MeterSection* m = 0;
- if ((m = dynamic_cast<MeterSection*> (*i)) != 0) {
+ for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
+
+ if (!(*i)->is_tempo()) {
+ m = static_cast<MeterSection*> (*i);
if (prev_m) {
double const pulses_to_m = m->pulse() - prev_m->pulse();
}
}
+ 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;
}
-void
-TempoMap::bbt_time (framepos_t frame, BBT_Time& bbt)
+/** Returns the BBT time corresponding to the supplied sample position.
+ * @param sample the position in audio samples.
+ * @return the BBT time at the sample position .
+ *
+ */
+BBT_Time
+TempoMap::bbt_at_sample (samplepos_t sample)
{
-
- if (frame < 0) {
+ if (sample < 0) {
+ BBT_Time bbt;
bbt.bars = 1;
bbt.beats = 1;
bbt.ticks = 0;
- warning << string_compose (_("tempo map asked for BBT time at frame %1\n"), frame) << endmsg;
- return;
+#ifndef NDEBUG
+ warning << string_compose (_("tempo map was asked for BBT time at sample %1\n"), sample) << endmsg;
+#endif
+ return bbt;
}
+
+ const double minute = minute_at_sample (sample);
+
Glib::Threads::RWLock::ReaderLock lm (lock);
- const double beat = beat_at_frame_locked (_metrics, frame);
- bbt = beats_to_bbt_locked (_metrics, beat);
+ return bbt_at_minute_locked (_metrics, minute);
}
-/* meter section based */
-framepos_t
-TempoMap::frame_time_locked (const Metrics& metrics, const BBT_Time& bbt) const
+BBT_Time
+TempoMap::bbt_at_sample_rt (samplepos_t sample)
{
- /* HOLD THE READER LOCK */
+ const double minute = minute_at_sample (sample);
+
+ Glib::Threads::RWLock::ReaderLock lm (lock, Glib::Threads::TRY_LOCK);
+
+ if (!lm.locked()) {
+ throw std::logic_error ("TempoMap::bbt_at_sample_rt() could not lock tempo map");
+ }
+
+ return bbt_at_minute_locked (_metrics, minute);
+}
+
+Timecode::BBT_Time
+TempoMap::bbt_at_minute_locked (const Metrics& metrics, const double& minute) const
+{
+ if (minute < 0) {
+ BBT_Time bbt;
+ bbt.bars = 1;
+ bbt.beats = 1;
+ bbt.ticks = 0;
+ return bbt;
+ }
+
+ const TempoSection& ts = tempo_section_at_minute_locked (metrics, minute);
+ MeterSection* prev_m = 0;
+ MeterSection* next_m = 0;
+
+ MeterSection* m;
+
+ for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
+ if (!(*i)->is_tempo()) {
+ m = static_cast<MeterSection*> (*i);
+ if (prev_m && m->minute() > minute) {
+ next_m = m;
+ break;
+ }
+ prev_m = m;
+ }
+ }
+
+ double beat = prev_m->beat() + (ts.pulse_at_minute (minute) - prev_m->pulse()) * prev_m->note_divisor();
+
+ /* handle sample before first meter */
+ if (minute < prev_m->minute()) {
+ beat = 0.0;
+ }
+ /* audio locked meters fake their beat */
+ if (next_m && next_m->beat() < beat) {
+ beat = next_m->beat();
+ }
+
+ beat = max (0.0, beat);
+
+ const double beats_in_ms = beat - prev_m->beat();
+ const uint32_t bars_in_ms = (uint32_t) floor (beats_in_ms / prev_m->divisions_per_bar());
+ const uint32_t total_bars = bars_in_ms + (prev_m->bbt().bars - 1);
+ const double remaining_beats = beats_in_ms - (bars_in_ms * prev_m->divisions_per_bar());
+ const double remaining_ticks = (remaining_beats - floor (remaining_beats)) * BBT_Time::ticks_per_beat;
+
+ BBT_Time ret;
+
+ ret.ticks = (uint32_t) floor (remaining_ticks + 0.5);
+ ret.beats = (uint32_t) floor (remaining_beats);
+ ret.bars = total_bars;
+
+ /* 0 0 0 to 1 1 0 - based mapping*/
+ ++ret.bars;
+ ++ret.beats;
+
+ if (ret.ticks >= BBT_Time::ticks_per_beat) {
+ ++ret.beats;
+ ret.ticks -= BBT_Time::ticks_per_beat;
+ }
+
+ if (ret.beats >= prev_m->divisions_per_bar() + 1) {
+ ++ret.bars;
+ ret.beats = 1;
+ }
- const framepos_t ret = frame_at_beat_locked (metrics, bbt_to_beats_locked (metrics, bbt));
return ret;
}
-framepos_t
-TempoMap::frame_time (const BBT_Time& bbt)
+/** Returns the sample position corresponding to the supplied BBT time.
+ * @param bbt the position in BBT time.
+ * @return the sample position at bbt.
+ *
+ */
+samplepos_t
+TempoMap::sample_at_bbt (const BBT_Time& bbt)
{
if (bbt.bars < 1) {
- warning << string_compose (_("tempo map asked for frame time at bar < 1 (%1)\n"), bbt) << endmsg;
+#ifndef NDEBUG
+ warning << string_compose (_("tempo map asked for sample time at bar < 1 (%1)\n"), bbt) << endmsg;
+#endif
return 0;
}
if (bbt.beats < 1) {
throw std::logic_error ("beats are counted from one");
}
+
+ double minute;
+ {
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+ minute = minute_at_bbt_locked (_metrics, bbt);
+ }
+
+ return sample_at_minute (minute);
+}
+
+/* meter & tempo section based */
+double
+TempoMap::minute_at_bbt_locked (const Metrics& metrics, const BBT_Time& bbt) const
+{
+ /* HOLD THE READER LOCK */
+
+ const double ret = minute_at_beat_locked (metrics, beat_at_bbt_locked (metrics, bbt));
+ return ret;
+}
+
+/**
+ * Returns the quarter-note beat position corresponding to the supplied sample.
+ *
+ * @param sample the position in samples.
+ * @return The quarter-note position of the supplied sample. Ignores meter.
+ *
+*/
+double
+TempoMap::quarter_note_at_sample (const samplepos_t sample) const
+{
+ const double minute = minute_at_sample (sample);
+
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+
+ return pulse_at_minute_locked (_metrics, minute) * 4.0;
+}
+
+double
+TempoMap::quarter_note_at_sample_rt (const samplepos_t sample) const
+{
+ const double minute = minute_at_sample (sample);
+
+ Glib::Threads::RWLock::ReaderLock lm (lock, Glib::Threads::TRY_LOCK);
+
+ if (!lm.locked()) {
+ throw std::logic_error ("TempoMap::quarter_note_at_sample_rt() could not lock tempo map");
+ }
+
+ return pulse_at_minute_locked (_metrics, minute) * 4.0;
+}
+
+/**
+ * Returns the sample position corresponding to the supplied quarter-note beat.
+ *
+ * @param quarter_note the quarter-note position.
+ * @return the sample position of the supplied quarter-note. Ignores meter.
+ *
+ *
+*/
+samplepos_t
+TempoMap::sample_at_quarter_note (const double quarter_note) const
+{
+ double minute;
+ {
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+
+ minute = minute_at_pulse_locked (_metrics, quarter_note / 4.0);
+ }
+
+ return sample_at_minute (minute);
+}
+
+/** 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 Temporal::Beats.
+ *
+ */
+double
+TempoMap::quarter_note_at_beat (const double beat) const
+{
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+
+ 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 Temporal::Beats.
+ *
+ */
+double
+TempoMap::beat_at_quarter_note (const double quarter_note) const
+{
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+
+ return beat_at_pulse_locked (_metrics, quarter_note / 4.0);
+}
+
+/** Returns the duration in samples 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 sample distance ober the quarter-note beats duration.
+ *
+ * use this rather than e.g.
+ * sample_at-quarter_note (end_beats) - sample_at_quarter_note (start_beats).
+ * samples_between_quarter_notes() doesn't round to audio samples as an intermediate step,
+ *
+ */
+samplecnt_t
+TempoMap::samples_between_quarter_notes (const double start, const double end) const
+{
+ double minutes;
+
+ {
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+ minutes = minutes_between_quarter_notes_locked (_metrics, start, end);
+ }
+
+ return sample_at_minute (minutes);
+}
+
+double
+TempoMap::minutes_between_quarter_notes_locked (const Metrics& metrics, const double start, const double end) const
+{
+
+ return minute_at_pulse_locked (metrics, end / 4.0) - minute_at_pulse_locked (metrics, start / 4.0);
+}
+
+double
+TempoMap::quarter_notes_between_samples (const samplecnt_t start, const samplecnt_t end) const
+{
Glib::Threads::RWLock::ReaderLock lm (lock);
- return frame_time_locked (_metrics, bbt);
+ return quarter_notes_between_samples_locked (_metrics, start, end);
+}
+
+double
+TempoMap::quarter_notes_between_samples_locked (const Metrics& metrics, const samplecnt_t start, const samplecnt_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->sample() > start) {
+ break;
+ }
+ prev_t = t;
+ }
+ }
+ assert (prev_t);
+ const double start_qn = prev_t->pulse_at_sample (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->sample() > end) {
+ break;
+ }
+ prev_t = t;
+ }
+ }
+ const double end_qn = prev_t->pulse_at_sample (end);
+
+ return (end_qn - start_qn) * 4.0;
}
bool
-TempoMap::check_solved (const Metrics& metrics, bool by_frame) const
+TempoMap::check_solved (const Metrics& metrics) const
{
TempoSection* prev_t = 0;
MeterSection* prev_m = 0;
for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
TempoSection* t;
MeterSection* m;
- if ((t = dynamic_cast<TempoSection*> (*i)) != 0) {
+ if ((*i)->is_tempo()) {
+ t = static_cast<TempoSection*> (*i);
if (!t->active()) {
continue;
}
if (prev_t) {
- if ((by_frame && t->frame() < prev_t->frame()) || (!by_frame && t->pulse() < prev_t->pulse())) {
- return false;
- }
-
- if (t->frame() == prev_t->frame()) {
+ /* check ordering */
+ if ((t->minute() <= prev_t->minute()) || (t->pulse() <= prev_t->pulse())) {
return false;
}
- /* precision check ensures pulses and frames align.*/
- if (t->frame() != prev_t->frame_at_pulse (t->pulse(), _frame_rate)) {
+ /* precision check ensures tempo and samples align.*/
+ if (t->sample() != sample_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()) > 1000.0) {
+ //std::cout << "c : " << prev_t->c() << std::endl;
+ return false;
+ }
}
prev_t = t;
}
- if ((m = dynamic_cast<MeterSection*> (*i)) != 0) {
+ if (!(*i)->is_tempo()) {
+ m = static_cast<MeterSection*> (*i);
if (prev_m && m->position_lock_style() == AudioTime) {
- TempoSection* t = const_cast<TempoSection*>(&tempo_section_at_locked (metrics, m->frame() - 1));
- const double nascent_m_pulse = ((m->beat() - prev_m->beat()) / prev_m->note_divisor()) + prev_m->pulse();
- const framepos_t nascent_m_frame = t->frame_at_pulse (nascent_m_pulse, _frame_rate);
-
- if (t && (nascent_m_frame > m->frame() || nascent_m_frame < 0)) {
+ const TempoSection* t = &tempo_section_at_minute_locked (metrics, minute_at_sample (m->sample() - 1));
+ const samplepos_t nascent_m_sample = sample_at_minute (t->minute_at_pulse (m->pulse()));
+ /* Here we check that a preceding section of music doesn't overlap a subsequent one.
+ */
+ if (t && (nascent_m_sample > m->sample() || nascent_m_sample < 0)) {
return false;
}
}
}
bool
-TempoMap::set_active_tempos (const Metrics& metrics, const framepos_t& frame)
+TempoMap::set_active_tempi (const Metrics& metrics, const samplepos_t sample)
{
for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
TempoSection* t;
- if ((t = dynamic_cast<TempoSection*> (*i)) != 0) {
- if (!t->movable()) {
- t->set_active (true);
- continue;
- }
- if (t->movable() && t->active () && t->position_lock_style() == AudioTime && t->frame() < frame) {
- t->set_active (false);
- t->set_pulse (0.0);
- } else if (t->movable() && t->position_lock_style() == AudioTime && t->frame() > frame) {
+ if ((*i)->is_tempo()) {
+ t = static_cast<TempoSection*> (*i);
+ if (t->locked_to_meter()) {
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->sample() < sample) {
+ t->set_active (false);
+ t->set_pulse (-1.0);
+ } else if (t->sample() > sample) {
+ t->set_active (true);
+ } else if (t->sample() == sample) {
+ return false;
+ }
}
}
}
}
bool
-TempoMap::solve_map (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 ((m = dynamic_cast<MeterSection*> (*i)) != 0) {
- if (!m->movable()) {
- first_m_frame = m->frame();
+ if (!(*i)->is_tempo()) {
+ m = static_cast<MeterSection*> (*i);
+ 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 = dynamic_cast<TempoSection*> (*i)) != 0) {
+ if ((*i)->is_tempo()) {
+ t = static_cast<TempoSection*> (*i);
if (!t->active()) {
continue;
}
+
if (prev_t) {
+
if (t == section) {
- section_prev = prev_t;
continue;
}
+
+ if (t->sample() == sample_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;
+
+ 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));
+ }
+ 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 (section->position_lock_style() == MusicTime) {
- /* we're setting the frame */
- section->set_position_lock_style (AudioTime);
- recompute_tempos (imaginary);
- section->set_position_lock_style (MusicTime);
- } else {
- recompute_tempos (imaginary);
- }
-
- if (check_solved (imaginary, true)) {
- return true;
- }
-
MetricSectionFrameSorter fcmp;
imaginary.sort (fcmp);
- if (section->position_lock_style() == MusicTime) {
- /* we're setting the frame */
- section->set_position_lock_style (AudioTime);
- recompute_tempos (imaginary);
- section->set_position_lock_style (MusicTime);
- } else {
- recompute_tempos (imaginary);
- }
- if (check_solved (imaginary, true)) {
+ recompute_tempi (imaginary);
+
+ if (check_solved (imaginary)) {
return true;
}
- //dump (imaginary, std::cerr);
-
return false;
}
bool
-TempoMap::solve_map (Metrics& imaginary, TempoSection* section, const double& pulse)
+TempoMap::solve_map_pulse (Metrics& imaginary, TempoSection* section, const double& pulse)
{
TempoSection* prev_t = 0;
TempoSection* section_prev = 0;
for (Metrics::iterator i = imaginary.begin(); i != imaginary.end(); ++i) {
TempoSection* t;
- if ((t = dynamic_cast<TempoSection*> (*i)) != 0) {
+ if ((*i)->is_tempo()) {
+ t = static_cast<TempoSection*> (*i);
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()));
}
}
}
prev_t = t;
}
}
- if (section_prev) {
- section_prev->set_c_func (section_prev->compute_c_func_pulse (section->pulses_per_minute(), pulse, _frame_rate));
- section->set_frame (section_prev->frame_at_pulse (pulse, _frame_rate));
- }
- if (section->position_lock_style() == AudioTime) {
- /* we're setting the pulse */
- section->set_position_lock_style (MusicTime);
- recompute_tempos (imaginary);
- section->set_position_lock_style (AudioTime);
- } else {
- recompute_tempos (imaginary);
- }
-
- if (check_solved (imaginary, false)) {
- return true;
+ if (section_prev) {
+ 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));
}
MetricSectionSorter cmp;
imaginary.sort (cmp);
- if (section->position_lock_style() == AudioTime) {
- /* we're setting the pulse */
- section->set_position_lock_style (MusicTime);
- recompute_tempos (imaginary);
- section->set_position_lock_style (AudioTime);
- } else {
- recompute_tempos (imaginary);
- }
- if (check_solved (imaginary, false)) {
+ recompute_tempi (imaginary);
+ /* Reordering
+ * XX need a restriction here, but only for this case,
+ * as audio locked tempos don't interact in the same way.
+ *
+ * With music-locked tempos, the solution to cross-dragging can fly off the screen
+ * e.g.
+ * |50 bpm |250 bpm |60 bpm
+ * drag 250 to the pulse after 60->
+ * a clue: dragging the second 60 <- past the 250 would cause no such problem.
+ */
+ if (check_solved (imaginary)) {
return true;
}
- //dump (imaginary, std::cerr);
-
return false;
}
bool
-TempoMap::solve_map (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_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, sample_at_minute (minute))) {
return false;
}
}
- /* it would make sense to bail out if there is no audio-locked meter,
- however it may be desirable to move a music-locked meter by frame at some point.
- */
TempoSection* meter_locked_tempo = 0;
+
for (Metrics::const_iterator ii = imaginary.begin(); ii != imaginary.end(); ++ii) {
TempoSection* t;
- if ((t = dynamic_cast<TempoSection*> (*ii)) != 0) {
- if ((t->locked_to_meter() || !t->movable()) && t->frame() == section->frame()) {
+ if ((*ii)->is_tempo()) {
+ t = static_cast<TempoSection*> (*ii);
+ if (t->locked_to_meter() && t->sample() == section->sample()) {
meter_locked_tempo = t;
break;
}
}
}
+ if (!meter_locked_tempo) {
+ return false;
+ }
+
MeterSection* prev_m = 0;
+ Metrics future_map;
+ TempoSection* tempo_copy = copy_metrics_and_point (imaginary, future_map, meter_locked_tempo);
+ bool solved = false;
for (Metrics::iterator i = imaginary.begin(); i != imaginary.end(); ++i) {
MeterSection* m;
- if ((m = dynamic_cast<MeterSection*> (*i)) != 0) {
+ 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()) {
- /* disallow position change if it will alter our beat
- we allow tempo changes to do this in recompute_meters().
- blocking this is an option, but i'm not convinced that
- this is what the user would actually want.
- here we 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();
+
+ 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());
- if (meter_locked_tempo) {
- Metrics future_map;
- bool solved = false;
- TempoSection* tempo_copy = copy_metrics_and_point (imaginary, future_map, meter_locked_tempo);
- 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 (future_map, tempo_copy, smallest_frame))) {
- meter_locked_tempo->set_pulse (new_pulse);
- solve_map (imaginary, meter_locked_tempo, smallest_frame);
- section->set_frame (smallest_frame);
- section->set_pulse (new_pulse);
- } else {
- solved = false;
- }
-
- Metrics::const_iterator d = future_map.begin();
- while (d != future_map.end()) {
- delete (*d);
- ++d;
- }
-
- if (!solved) {
- return false;
- }
+ } else {
+ solved = false;
+ }
+
+ Metrics::const_iterator d = future_map.begin();
+ while (d != future_map.end()) {
+ delete (*d);
+ ++d;
+ }
+
+ if (!solved) {
+ return false;
}
- return false;
} else {
- if (meter_locked_tempo) {
- Metrics future_map;
- bool solved = false;
+ /* all is ok. set section's locked tempo if allowed.
+ 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_minute_locked (future_map, section->minute()));
- TempoSection* tempo_copy = copy_metrics_and_point (imaginary, future_map, meter_locked_tempo);
- MeterSection* meter_copy = const_cast<MeterSection*> (&meter_section_at_locked (future_map, section->frame()));
- meter_copy->set_frame (frame);
+ meter_copy->set_minute (minute);
- if ((solved = solve_map (future_map, tempo_copy, frame))) {
- section->set_frame (frame);
- meter_locked_tempo->set_pulse (((section->beat() - prev_m->beat())
+ 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 (imaginary, meter_locked_tempo, frame);
- } else {
- solved = false;
- }
-
- Metrics::const_iterator d = future_map.begin();
- while (d != future_map.end()) {
- delete (*d);
- ++d;
- }
-
- if (!solved) {
- return false;
- }
- }
- }
- } else {
- /* not movable (first meter atm) */
- if (meter_locked_tempo) {
- Metrics future_map;
- bool solved = false;
- TempoSection* tempo_copy = copy_metrics_and_point (imaginary, future_map, meter_locked_tempo);
-
- tempo_copy->set_frame (frame);
- tempo_copy->set_pulse (0.0);
-
- if ((solved = solve_map (future_map, tempo_copy, frame))) {
- section->set_frame (frame);
- meter_locked_tempo->set_frame (frame);
- meter_locked_tempo->set_pulse (0.0);
- solve_map (imaginary, meter_locked_tempo, frame);
+ solve_map_minute (imaginary, meter_locked_tempo, minute);
} else {
solved = false;
}
if (!solved) {
return false;
}
+ }
+ } else {
+ /* initial (first meter atm) */
+ tempo_copy->set_minute (minute);
+ tempo_copy->set_pulse (0.0);
+
+ 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_minute (imaginary, meter_locked_tempo, minute);
} else {
+ solved = false;
+ }
+
+ Metrics::const_iterator d = future_map.begin();
+ while (d != future_map.end()) {
+ delete (*d);
+ ++d;
+ }
+
+ if (!solved) {
return false;
}
+
pair<double, BBT_Time> b_bbt = make_pair (0.0, BBT_Time (1, 1, 0));
section->set_beat (b_bbt);
section->set_pulse (0.0);
MetricSectionFrameSorter fcmp;
imaginary.sort (fcmp);
- if (section->position_lock_style() == MusicTime) {
- /* we're setting the frame */
- section->set_position_lock_style (AudioTime);
- recompute_meters (imaginary);
- section->set_position_lock_style (MusicTime);
- } else {
- recompute_meters (imaginary);
- }
- //dump (imaginary, std::cerr);
+
+ recompute_meters (imaginary);
+
return true;
}
bool
-TempoMap::solve_map (Metrics& imaginary, MeterSection* section, const BBT_Time& when)
+TempoMap::solve_map_bbt (Metrics& imaginary, MeterSection* section, const BBT_Time& when)
{
/* disallow setting section to an existing meter's bbt */
for (Metrics::iterator i = imaginary.begin(); i != imaginary.end(); ++i) {
MeterSection* m;
- if ((m = dynamic_cast<MeterSection*> (*i)) != 0) {
- if (m->bbt().bars == when.bars) {
+ if (!(*i)->is_tempo()) {
+ m = static_cast<MeterSection*> (*i);
+ if (m != section && m->bbt().bars == when.bars) {
return false;
}
}
for (Metrics::iterator i = imaginary.begin(); i != imaginary.end(); ++i) {
MeterSection* m;
- if ((m = dynamic_cast<MeterSection*> (*i)) != 0) {
+ 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* meter_locked_tempo = 0;
+
for (Metrics::const_iterator ii = imaginary.begin(); ii != imaginary.end(); ++ii) {
TempoSection* t;
- if ((t = dynamic_cast<TempoSection*> (*ii)) != 0) {
- if ((t->locked_to_meter() || !t->movable()) && t->frame() == m->frame()) {
+ if ((*ii)->is_tempo()) {
+ t = static_cast<TempoSection*> (*ii);
+ if (t->locked_to_meter() && t->sample() == m->sample()) {
meter_locked_tempo = t;
break;
}
}
}
+ if (!meter_locked_tempo) {
+ return false;
+ }
+
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());
}
} else {
b_bbt = make_pair (0.0, BBT_Time (1, 1, 0));
}
- if (meter_locked_tempo) {
- meter_locked_tempo->set_pulse (new_pulse);
- recompute_tempos (imaginary);
- }
+
+ meter_locked_tempo->set_pulse (new_pulse);
m->set_beat (b_bbt);
m->set_pulse (new_pulse);
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;
imaginary.sort (cmp);
- if (section->position_lock_style() == AudioTime) {
- /* we're setting the pulse */
- section->set_position_lock_style (MusicTime);
- recompute_meters (imaginary);
- section->set_position_lock_style (AudioTime);
- } else {
- recompute_meters (imaginary);
- }
+
+ recompute_meters (imaginary);
return true;
}
* to section's equivalent in copy.
*/
TempoSection*
-TempoMap::copy_metrics_and_point (const Metrics& metrics, Metrics& copy, TempoSection* section)
+TempoMap::copy_metrics_and_point (const Metrics& metrics, Metrics& copy, TempoSection* section) const
{
TempoSection* ret = 0;
for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
- TempoSection* t;
- MeterSection* m;
- if ((t = dynamic_cast<TempoSection*> (*i)) != 0) {
+ if ((*i)->is_tempo()) {
+ TempoSection const * const t = dynamic_cast<TempoSection const * const> (*i);
if (t == section) {
ret = new TempoSection (*t);
copy.push_back (ret);
TempoSection* cp = new TempoSection (*t);
copy.push_back (cp);
- }
- if ((m = dynamic_cast<MeterSection *> (*i)) != 0) {
+ } else {
+ MeterSection const * const m = dynamic_cast<MeterSection const * const> (*i);
MeterSection* cp = new MeterSection (*m);
copy.push_back (cp);
}
}
MeterSection*
-TempoMap::copy_metrics_and_point (const Metrics& metrics, Metrics& copy, MeterSection* section)
+TempoMap::copy_metrics_and_point (const Metrics& metrics, Metrics& copy, MeterSection* section) const
{
MeterSection* ret = 0;
for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
- TempoSection* t;
- MeterSection* m;
- if ((t = dynamic_cast<TempoSection*> (*i)) != 0) {
+ if ((*i)->is_tempo()) {
+ TempoSection const * const t = dynamic_cast<TempoSection const * const> (*i);
TempoSection* cp = new TempoSection (*t);
copy.push_back (cp);
- }
-
- if ((m = dynamic_cast<MeterSection *> (*i)) != 0) {
+ } else {
+ MeterSection const * const m = dynamic_cast<MeterSection const * const> (*i);
if (m == section) {
ret = new MeterSection (*m);
copy.push_back (ret);
return ret;
}
+/** 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 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.
+ */
bool
TempoMap::can_solve_bbt (TempoSection* ts, const BBT_Time& bbt)
{
}
}
- const double beat = bbt_to_beats_locked (copy, bbt);
- const bool ret = solve_map (copy, tempo_copy, pulse_at_beat_locked (copy, beat));
+ const bool ret = solve_map_pulse (copy, tempo_copy, pulse_at_bbt_locked (copy, bbt));
Metrics::const_iterator d = copy.begin();
while (d != copy.end()) {
}
/**
-* This is for a gui that needs to know the frame of a tempo section if it were to be moved to some bbt time,
+* This is for a gui that needs to know the pulse or sample of a tempo section if it were to be moved to some bbt time,
* taking any possible reordering as a consequence of this into account.
* @param section - the section to be altered
-* @param bpm - the new Tempo
-* @param bbt - the bbt where the altered tempo will fall
-* @return returns - the position in frames where the new tempo section will lie.
+* @param bbt - the BBT time where the altered tempo will fall
+* @return returns - the position in pulses and samples (as a pair) where the new tempo section will lie.
*/
-framepos_t
-TempoMap::predict_tempo_frame (TempoSection* section, const BBT_Time& bbt)
+pair<double, samplepos_t>
+TempoMap::predict_tempo_position (TempoSection* section, const BBT_Time& bbt)
{
- Glib::Threads::RWLock::ReaderLock lm (lock);
Metrics future_map;
- framepos_t ret = 0;
+ pair<double, samplepos_t> ret = make_pair (0.0, 0);
+
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+
TempoSection* tempo_copy = copy_metrics_and_point (_metrics, future_map, section);
- if (!tempo_copy) {
- return 0;
+
+ const double beat = beat_at_bbt_locked (future_map, bbt);
+
+ if (section->position_lock_style() == AudioTime) {
+ tempo_copy->set_position_lock_style (MusicTime);
}
- const double beat = bbt_to_beats_locked (future_map, bbt);
- if (solve_map (future_map, tempo_copy, pulse_at_beat_locked (future_map, beat))) {
- ret = tempo_copy->frame();
+ if (solve_map_pulse (future_map, tempo_copy, pulse_at_beat_locked (future_map, beat))) {
+ ret.first = tempo_copy->pulse();
+ ret.second = tempo_copy->sample();
} else {
- ret = section->frame();
+ ret.first = section->pulse();
+ ret.second = section->sample();
}
Metrics::const_iterator d = future_map.begin();
return ret;
}
-double
-TempoMap::predict_tempo_pulse (TempoSection* section, const framepos_t& frame)
+/** moves a TempoSection to a specified position.
+ * @param ts - the section to be moved
+ * @param sample - the new position in samples for the tempo
+ * @param sub_num - the snap division to use if using musical time.
+ *
+ * if sub_num is non-zero, the sample position is used to calculate an exact
+ * musical position.
+ * sub_num | effect
+ * -1 | snap to bars (meter-based)
+ * 0 | no snap - use audio sample 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 sample.
+ */
+void
+TempoMap::gui_set_tempo_position (TempoSection* ts, const samplepos_t sample, const int& sub_num)
{
- Glib::Threads::RWLock::ReaderLock lm (lock);
Metrics future_map;
- double ret = 0.0;
- TempoSection* tempo_copy = copy_metrics_and_point (_metrics, future_map, section);
- if (solve_map (future_map, tempo_copy, frame)) {
- ret = tempo_copy->pulse();
+ if (ts->position_lock_style() == MusicTime) {
+ {
+ /* if we're snapping to a musical grid, set the pulse exactly instead of via the supplied sample. */
+ Glib::Threads::RWLock::WriterLock lm (lock);
+ TempoSection* tempo_copy = copy_metrics_and_point (_metrics, future_map, ts);
+
+ tempo_copy->set_position_lock_style (AudioTime);
+
+ if (solve_map_minute (future_map, tempo_copy, minute_at_sample (sample))) {
+ const double beat = exact_beat_at_sample_locked (future_map, sample, sub_num);
+ const double pulse = pulse_at_beat_locked (future_map, beat);
+
+ if (solve_map_pulse (future_map, tempo_copy, pulse)) {
+ solve_map_pulse (_metrics, ts, pulse);
+ recompute_meters (_metrics);
+ }
+ }
+ }
+
} else {
- ret = section->pulse();
+
+ {
+ Glib::Threads::RWLock::WriterLock lm (lock);
+ TempoSection* tempo_copy = copy_metrics_and_point (_metrics, future_map, ts);
+
+
+ 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 sample 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).
+ * We fudge around this by doing this in the musical domain and then swapping back for the recompute.
+ */
+ const double qn = exact_qn_at_sample_locked (_metrics, sample, sub_num);
+ tempo_copy->set_position_lock_style (MusicTime);
+ if (solve_map_pulse (future_map, tempo_copy, qn / 4.0)) {
+ ts->set_position_lock_style (MusicTime);
+ solve_map_pulse (_metrics, ts, qn / 4.0);
+ ts->set_position_lock_style (AudioTime);
+ recompute_meters (_metrics);
+ }
+ } else {
+ if (solve_map_minute (future_map, tempo_copy, minute_at_sample (sample))) {
+ solve_map_minute (_metrics, ts, minute_at_sample (sample));
+ recompute_meters (_metrics);
+ }
+ }
+ }
}
Metrics::const_iterator d = future_map.begin();
delete (*d);
++d;
}
- return ret;
+
+ MetricPositionChanged (PropertyChange ()); // Emit Signal
}
+/** moves a MeterSection to a specified position.
+ * @param ms - the section to be moved
+ * @param sample - the new position in samples for the meter
+ *
+ * as a meter cannot snap to anything but bars,
+ * the supplied sample is rounded to the nearest bar, possibly
+ * leaving the meter position unchanged.
+ */
void
-TempoMap::gui_move_tempo_frame (TempoSection* ts, const framepos_t& frame)
+TempoMap::gui_set_meter_position (MeterSection* ms, const samplepos_t sample)
{
Metrics future_map;
- {
- Glib::Threads::RWLock::WriterLock lm (lock);
- TempoSection* tempo_copy = copy_metrics_and_point (_metrics, future_map, ts);
- if (solve_map (future_map, tempo_copy, frame)) {
- solve_map (_metrics, ts, frame);
- recompute_meters (_metrics);
+
+ if (ms->position_lock_style() == AudioTime) {
+
+ {
+ Glib::Threads::RWLock::WriterLock lm (lock);
+ MeterSection* copy = copy_metrics_and_point (_metrics, future_map, ms);
+
+ if (solve_map_minute (future_map, copy, minute_at_sample (sample))) {
+ solve_map_minute (_metrics, ms, minute_at_sample (sample));
+ recompute_tempi (_metrics);
+ }
+ }
+ } else {
+ {
+ Glib::Threads::RWLock::WriterLock lm (lock);
+ MeterSection* copy = copy_metrics_and_point (_metrics, future_map, ms);
+
+ const double beat = beat_at_minute_locked (_metrics, minute_at_sample (sample));
+ const Timecode::BBT_Time bbt = bbt_at_beat_locked (_metrics, beat);
+
+ if (solve_map_bbt (future_map, copy, bbt)) {
+ solve_map_bbt (_metrics, ms, bbt);
+ recompute_tempi (_metrics);
+ }
}
}
++d;
}
- MetricPositionChanged (); // Emit Signal
+ MetricPositionChanged (PropertyChange ()); // Emit Signal
}
-void
-TempoMap::gui_move_tempo_beat (TempoSection* ts, const double& beat)
+bool
+TempoMap::gui_change_tempo (TempoSection* ts, const Tempo& bpm)
{
Metrics future_map;
+ bool can_solve = false;
{
Glib::Threads::RWLock::WriterLock lm (lock);
TempoSection* tempo_copy = copy_metrics_and_point (_metrics, future_map, ts);
- if (solve_map (future_map, tempo_copy, pulse_at_beat_locked (future_map, beat))) {
- solve_map (_metrics, ts, pulse_at_beat_locked (_metrics, beat));
- recompute_meters (_metrics);
+
+ if (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 {
+ tempo_copy->set_note_types_per_minute (bpm.note_types_per_minute());
+ tempo_copy->set_end_note_types_per_minute (bpm.end_note_types_per_minute());
+ }
+
+ if (ts->clamped()) {
+ TempoSection* prev = 0;
+ if ((prev = previous_tempo_section_locked (future_map, tempo_copy)) != 0) {
+ prev->set_end_note_types_per_minute (tempo_copy->note_types_per_minute());
+ }
+ }
+
+ recompute_tempi (future_map);
+
+ if (check_solved (future_map)) {
+ if (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 {
+ ts->set_end_note_types_per_minute (bpm.end_note_types_per_minute());
+ ts->set_note_types_per_minute (bpm.note_types_per_minute());
+ }
+
+ if (ts->clamped()) {
+ TempoSection* prev = 0;
+ if ((prev = previous_tempo_section_locked (_metrics, ts)) != 0) {
+ prev->set_end_note_types_per_minute (ts->note_types_per_minute());
+ }
+ }
+
+ recompute_map (_metrics);
+ can_solve = true;
}
}
delete (*d);
++d;
}
+ if (can_solve) {
+ MetricPositionChanged (PropertyChange ()); // Emit Signal
+ }
- MetricPositionChanged (); // Emit Signal
+ return can_solve;
}
void
-TempoMap::gui_move_tempo_pulse (TempoSection* ts, const double& pulse)
+TempoMap::gui_stretch_tempo (TempoSection* ts, const samplepos_t sample, const samplepos_t end_sample, const double start_qnote, const double end_qnote)
{
+ /*
+ Ts (future prev_t) Tnext
+ | |
+ | [drag^] |
+ |----------|----------
+ e_f qn_beats(sample)
+ */
+
Metrics future_map;
+
{
Glib::Threads::RWLock::WriterLock lm (lock);
- TempoSection* tempo_copy = copy_metrics_and_point (_metrics, future_map, ts);
- if (solve_map (future_map, tempo_copy, pulse)) {
- solve_map (_metrics, ts, pulse);
+
+ if (!ts) {
+ return;
+ }
+
+ TempoSection* ts_copy = copy_metrics_and_point (_metrics, future_map, ts);
+
+ if (!ts_copy) {
+ return;
+ }
+
+ /* minimum allowed measurement distance in samples */
+ samplepos_t const min_dframe = 2;
+
+ double new_bpm;
+ if (ts_copy->clamped()) {
+ TempoSection* next_t = next_tempo_section_locked (future_map, ts_copy);
+ TempoSection* prev_to_ts_copy = previous_tempo_section_locked (future_map, ts_copy);
+ /* the change in samples is the result of changing the slope of at most 2 previous tempo sections.
+ constant to constant is straightforward, as the tempo prev to ts_copy has constant slope.
+ */ double contribution = 0.0;
+ if (next_t && prev_to_ts_copy && prev_to_ts_copy->type() == TempoSection::Ramp) {
+ contribution = (ts_copy->pulse() - prev_to_ts_copy->pulse()) / (double) (next_t->pulse() - prev_to_ts_copy->pulse());
+ }
+ samplepos_t const fr_off = end_sample - sample;
+ sampleoffset_t const ts_copy_sample_contribution = fr_off - (contribution * (double) fr_off);
+
+ if (sample > prev_to_ts_copy->sample() + min_dframe && (sample + ts_copy_sample_contribution) > prev_to_ts_copy->sample() + min_dframe) {
+ new_bpm = ts_copy->note_types_per_minute() * ((start_qnote - (prev_to_ts_copy->pulse() * 4.0))
+ / (end_qnote - (prev_to_ts_copy->pulse() * 4.0)));
+ } else {
+ new_bpm = ts_copy->note_types_per_minute();
+ }
+ } else {
+ if (sample > ts_copy->sample() + min_dframe && end_sample > ts_copy->sample() + min_dframe) {
+
+ new_bpm = ts_copy->note_types_per_minute() * ((sample - ts_copy->sample())
+ / (double) (end_sample - ts_copy->sample()));
+ } else {
+ new_bpm = ts_copy->note_types_per_minute();
+ }
+
+ 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) {
+ goto out;
+ }
+
+ ts_copy->set_note_types_per_minute (new_bpm);
+
+ if (ts_copy->clamped()) {
+ TempoSection* prev = 0;
+ if ((prev = previous_tempo_section_locked (future_map, ts_copy)) != 0) {
+ prev->set_end_note_types_per_minute (ts_copy->note_types_per_minute());
+ }
+ }
+
+ recompute_tempi (future_map);
+ recompute_meters (future_map);
+
+ if (check_solved (future_map)) {
+ ts->set_note_types_per_minute (new_bpm);
+
+ if (ts->clamped()) {
+ TempoSection* prev = 0;
+ if ((prev = previous_tempo_section_locked (_metrics, ts)) != 0) {
+ prev->set_end_note_types_per_minute (ts->note_types_per_minute());
+ }
+ }
+
+ recompute_tempi (_metrics);
recompute_meters (_metrics);
}
}
+
+out:
Metrics::const_iterator d = future_map.begin();
while (d != future_map.end()) {
delete (*d);
++d;
}
+ MetricPositionChanged (PropertyChange ()); // Emit Signal
- MetricPositionChanged (); // Emit Signal
-}
+}
void
-TempoMap::gui_move_meter (MeterSection* ms, const framepos_t& frame)
+TempoMap::gui_stretch_tempo_end (TempoSection* ts, const samplepos_t sample, const samplepos_t end_sample)
{
+ /*
+ Ts (future prev_t) Tnext
+ | |
+ | [drag^] |
+ |----------|----------
+ e_f qn_beats(sample)
+ */
+
Metrics future_map;
+
{
Glib::Threads::RWLock::WriterLock lm (lock);
- MeterSection* copy = copy_metrics_and_point (_metrics, future_map, ms);
- if (solve_map (future_map, copy, frame)) {
- solve_map (_metrics, ms, frame);
- recompute_tempos (_metrics);
+
+ if (!ts) {
+ return;
+ }
+
+ TempoSection* prev_t = copy_metrics_and_point (_metrics, future_map, ts);
+
+ if (!prev_t) {
+ return;
+ }
+
+ /* minimum allowed measurement distance in samples */
+ samplepos_t const min_dframe = 2;
+ double new_bpm;
+
+ if (sample > prev_t->sample() + min_dframe && end_sample > prev_t->sample() + min_dframe) {
+ new_bpm = prev_t->end_note_types_per_minute() * ((prev_t->sample() - sample)
+ / (double) (prev_t->sample() - end_sample));
+ } else {
+ 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);
+
+ TempoSection* next = 0;
+ if ((next = next_tempo_section_locked (future_map, prev_t)) != 0) {
+ if (next->clamped()) {
+ next->set_note_types_per_minute (prev_t->end_note_types_per_minute());
+ }
}
- }
- Metrics::const_iterator d = future_map.begin();
- while (d != future_map.end()) {
- delete (*d);
- ++d;
- }
+ recompute_tempi (future_map);
+ recompute_meters (future_map);
- MetricPositionChanged (); // Emit Signal
-}
+ if (check_solved (future_map)) {
+ ts->set_end_note_types_per_minute (new_bpm);
-void
-TempoMap::gui_move_meter (MeterSection* ms, const Timecode::BBT_Time& bbt)
-{
- Metrics future_map;
- {
- Glib::Threads::RWLock::WriterLock lm (lock);
- MeterSection* copy = copy_metrics_and_point (_metrics, future_map, ms);
- if (solve_map (future_map, copy, bbt)) {
- solve_map (_metrics, ms, bbt);
- recompute_tempos (_metrics);
+ TempoSection* true_next = 0;
+ if ((true_next = next_tempo_section_locked (_metrics, ts)) != 0) {
+ if (true_next->clamped()) {
+ true_next->set_note_types_per_minute (ts->end_note_types_per_minute());
+ }
+ }
+
+ recompute_tempi (_metrics);
+ recompute_meters (_metrics);
}
}
+
+out:
Metrics::const_iterator d = future_map.begin();
while (d != future_map.end()) {
delete (*d);
++d;
}
- MetricPositionChanged (); // Emit Signal
+ MetricPositionChanged (PropertyChange ()); // Emit Signal
}
bool
-TempoMap::gui_change_tempo (TempoSection* ts, const Tempo& bpm)
+TempoMap::gui_twist_tempi (TempoSection* ts, const Tempo& bpm, const samplepos_t sample, const samplepos_t end_sample)
{
+ TempoSection* next_t = 0;
+ TempoSection* next_to_next_t = 0;
Metrics future_map;
bool can_solve = false;
+
+ /* minimum allowed measurement distance in samples */
+ samplepos_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);
- tempo_copy->set_beats_per_minute (bpm.beats_per_minute());
- recompute_tempos (future_map);
+ TempoSection* prev_to_prev_t = 0;
+ const sampleoffset_t fr_off = end_sample - sample;
- if (check_solved (future_map, true)) {
- ts->set_beats_per_minute (bpm.beats_per_minute());
- recompute_map (_metrics);
- can_solve = true;
+ if (!tempo_copy) {
+ return false;
}
- }
- Metrics::const_iterator d = future_map.begin();
- while (d != future_map.end()) {
- delete (*d);
- ++d;
- }
- if (can_solve) {
- MetricPositionChanged (); // Emit Signal
- }
- return can_solve;
-}
+ if (tempo_copy->pulse() > 0.0) {
+ prev_to_prev_t = const_cast<TempoSection*>(&tempo_section_at_minute_locked (future_map, minute_at_sample (tempo_copy->sample() - 1)));
+ }
-void
-TempoMap::gui_dilate_tempo (MeterSection* ms, const framepos_t& frame)
-{
- Metrics future_map;
- TempoSection* ts = 0;
+ 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 (ms->position_lock_style() == AudioTime) {
- /* disabled for now due to faked tempo locked to meter pulse */
- return;
- }
+ if (!next_t) {
+ return false;
+ }
- {
- Glib::Threads::RWLock::WriterLock lm (lock);
- ts = const_cast<TempoSection*>(&tempo_section_at_locked (_metrics, ms->frame() - 1));
- if (!ts) {
- return;
+ 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;
+ }
}
- TempoSection* prev_t = copy_metrics_and_point (_metrics, future_map, ts);
- TempoSection* prev_to_prev_t = 0;
- const frameoffset_t fr_off = frame - ms->frame();
- double new_bpm = 0.0;
- if (prev_t && prev_t->pulse() > 0.0) {
- prev_to_prev_t = const_cast<TempoSection*>(&tempo_section_at_locked (future_map, prev_t->frame() - 1));
+ if (!next_to_next_t) {
+ 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->sample() - prev_to_prev_t->sample()) / (double) (next_t->sample() - prev_to_prev_t->sample());
+ }
+
+ const sampleoffset_t tempo_copy_sample_contribution = fr_off - (prev_contribution * (double) fr_off);
+
+
+ samplepos_t old_tc_minute = tempo_copy->minute();
+ double old_next_minute = next_t->minute();
+ double old_next_to_next_minute = next_to_next_t->minute();
+
+ double new_bpm;
+ double new_next_bpm;
+ double new_copy_end_bpm;
+
+ if (sample > tempo_copy->sample() + min_dframe && (sample + tempo_copy_sample_contribution) > tempo_copy->sample() + min_dframe) {
+ new_bpm = tempo_copy->note_types_per_minute() * ((sample - tempo_copy->sample())
+ / (double) (end_sample - tempo_copy->sample()));
+ } else {
+ new_bpm = tempo_copy->note_types_per_minute();
}
- /* 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.
+ /* 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.
*/
- double contribution = 0.0;
- frameoffset_t frame_contribution = 0.0;
- frameoffset_t prev_t_frame_contribution = 0.0;
+ if (new_bpm < 0.5) {
+ return false;
+ }
- if (prev_to_prev_t && prev_to_prev_t->type() == TempoSection::Ramp) {
- /* prev to prev_t's position will remain constant in terms of frame and pulse. lets use frames. */
- contribution = (prev_t->frame() - prev_to_prev_t->frame()) / (double) (ms->frame() - prev_to_prev_t->frame());
- frame_contribution = contribution * (double) fr_off;
- prev_t_frame_contribution = fr_off - frame_contribution;
+ 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);
}
- if (prev_t->type() == TempoSection::Constant || prev_t->c_func() == 0.0) {
+ recompute_tempi (future_map);
- if (prev_t->position_lock_style() == MusicTime) {
- if (prev_to_prev_t && prev_to_prev_t->type() == TempoSection::Ramp) {
- new_bpm = prev_t->beats_per_minute() * ((ms->frame() - prev_t->frame())
- / (double) (ms->frame() + prev_t_frame_contribution - prev_t->frame()));
+ if (check_solved (future_map)) {
- } else {
- /* prev to prev is irrelevant */
- const double meter_pulse = prev_t->pulse_at_frame (ms->frame(), _frame_rate);
- const double frame_pulse = prev_t->pulse_at_frame (frame, _frame_rate);
+ 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 (sample > tempo_copy->sample() + min_dframe && end_sample > tempo_copy->sample() + 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));
- if (frame_pulse != prev_t->pulse()) {
- new_bpm = prev_t->beats_per_minute() * ((meter_pulse - prev_t->pulse()) / (frame_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) {
- new_bpm = prev_t->beats_per_minute() * ((ms->frame() - prev_t->frame())
- / (double) (ms->frame() + prev_t_frame_contribution - prev_t->frame()));
- } else {
- /* prev_to_prev_t is irrelevant */
+ new_next_bpm = next_t->note_types_per_minute();
+ }
- if (frame != prev_t->frame()) {
- new_bpm = prev_t->beats_per_minute() * ((ms->frame() - prev_t->frame()) / (double) (frame - prev_t->frame()));
- } else {
- new_bpm = prev_t->beats_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 if (prev_t->c_func() < 0.0) {
- if (prev_to_prev_t && prev_to_prev_t->type() == TempoSection::Ramp) {
- new_bpm = prev_t->tempo_at_frame (prev_t->frame() + frame_contribution, _frame_rate) * (double) prev_t->note_type();
- } else {
- /* prev_to_prev_t is irrelevant */
- new_bpm = prev_t->tempo_at_frame (prev_t->frame() + fr_off, _frame_rate) * (double) prev_t->note_type();
- }
+ } else {
+ double next_sample_ratio = 1.0;
+ double copy_sample_ratio = 1.0;
- const double diff = (prev_t->tempo_at_frame (frame, _frame_rate) * prev_t->note_type()) - prev_t->beats_per_minute();
- if (diff > -0.1 && diff < 0.1) {
- new_bpm = prev_t->beats_per_minute() * ((ms->frame() - prev_t->frame())
- / (double) ((ms->frame() + prev_t_frame_contribution) - prev_t->frame()));
+ if (next_to_next_t) {
+ next_sample_ratio = (next_to_next_t->minute() - old_next_minute) / (old_next_to_next_minute - old_next_minute);
+
+ copy_sample_ratio = ((old_tc_minute - next_t->minute()) / (double) (old_tc_minute - old_next_minute));
}
- } else if (prev_t->c_func() > 0.0) {
- if (prev_to_prev_t && prev_to_prev_t->type() == TempoSection::Ramp) {
- new_bpm = prev_t->tempo_at_frame (prev_t->frame() - frame_contribution, _frame_rate) * (double) prev_t->note_type();
+ new_next_bpm = next_t->note_types_per_minute() * next_sample_ratio;
+ new_copy_end_bpm = tempo_copy->end_note_types_per_minute() * copy_sample_ratio;
+
+ tempo_copy->set_end_note_types_per_minute (new_copy_end_bpm);
+
+ if (next_t->clamped()) {
+ next_t->set_note_types_per_minute (new_copy_end_bpm);
} else {
- /* prev_to_prev_t is irrelevant */
- new_bpm = prev_t->tempo_at_frame (prev_t->frame() - fr_off, _frame_rate) * (double) prev_t->note_type();
+ next_t->set_note_types_per_minute (new_next_bpm);
}
- /* limits - a bit clunky, but meh */
- const double diff = (prev_t->tempo_at_frame (frame, _frame_rate) * prev_t->note_type()) - prev_t->beats_per_minute();
- if (diff > -0.1 && diff < 0.1) {
- new_bpm = prev_t->beats_per_minute() * ((ms->frame() - prev_t->frame())
- / (double) ((ms->frame() + prev_t_frame_contribution) - prev_t->frame()));
- }
- }
+ recompute_tempi (future_map);
- prev_t->set_beats_per_minute (new_bpm);
- recompute_tempos (future_map);
- recompute_meters (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 (check_solved (future_map, true)) {
+ if (!next_t) {
+ return false;
+ }
- prev_t = const_cast<TempoSection*>(&tempo_section_at_locked (_metrics, ms->frame() - 1));
- prev_t->set_beats_per_minute (new_bpm);
- recompute_tempos (_metrics);
+ if (next_t->clamped()) {
+ next_t->set_note_types_per_minute (new_copy_end_bpm);
+ } else {
+ next_t->set_note_types_per_minute (new_next_bpm);
+ }
- if (ms->position_lock_style() == AudioTime) {
- ms->set_frame (frame);
+ ts->set_end_note_types_per_minute (new_copy_end_bpm);
+ recompute_map (_metrics);
+ can_solve = true;
}
-
- recompute_meters (_metrics);
}
}
++d;
}
- MetricPositionChanged (); // Emit Signal
+ MetricPositionChanged (PropertyChange ()); // Emit Signal
+
+ return can_solve;
+}
+
+/** Returns the sample position of the musical position zero */
+samplepos_t
+TempoMap::music_origin ()
+{
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+
+ return first_tempo().sample();
+}
+
+/** Returns the exact bbt-based beat corresponding to the bar, beat or quarter note subdivision nearest to
+ * the supplied sample, possibly returning a negative value.
+ *
+ * @param sample The session sample 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_sample()).
+ * @return The beat position of the supplied sample.
+ *
+ * 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 sample 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_beat_at_sample (const samplepos_t sample, const int32_t sub_num) const
+{
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+
+ return exact_beat_at_sample_locked (_metrics, sample, sub_num);
+}
+
+double
+TempoMap::exact_beat_at_sample_locked (const Metrics& metrics, const samplepos_t sample, const int32_t divisions) const
+{
+ return beat_at_pulse_locked (_metrics, exact_qn_at_sample_locked (metrics, sample, divisions) / 4.0);
+}
+
+/** Returns the exact quarter note corresponding to the bar, beat or quarter note subdivision nearest to
+ * the supplied sample, possibly returning a negative value.
+ *
+ * @param sample The session sample 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_sample()).
+ * @return The quarter note position of the supplied sample.
+ *
+ * When working to a musical grid, the use of sub_nom indicates that
+ * the sample 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 sample 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_sample (const samplepos_t sample, const int32_t sub_num) const
+{
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+
+ return exact_qn_at_sample_locked (_metrics, sample, sub_num);
+}
+
+double
+TempoMap::exact_qn_at_sample_locked (const Metrics& metrics, const samplepos_t sample, const int32_t sub_num) const
+{
+ double qn = pulse_at_minute_locked (metrics, minute_at_sample (sample)) * 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) {
+ /* the gui requested exact musical (BBT) beat */
+ qn = pulse_at_beat_locked (metrics, (floor (beat_at_minute_locked (metrics, minute_at_sample (sample)) + 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;
+ ++bbt.bars;
+ 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;
+ } else {
+ qn = prev_b;
+ }
+ }
+
+ return qn;
}
-framecnt_t
-TempoMap::bbt_duration_at (framepos_t pos, const BBT_Time& bbt, int dir)
+/** returns the sample duration of the supplied BBT time at a specified sample position in the tempo map.
+ * @param pos the sample 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 samples between pos and bbt
+*/
+samplecnt_t
+TempoMap::bbt_duration_at (samplepos_t pos, const BBT_Time& bbt, int dir)
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- const double tick_at_time = beat_at_frame_locked (_metrics, pos) * BBT_Time::ticks_per_beat;
- const double bbt_ticks = bbt.ticks + (bbt.beats * BBT_Time::ticks_per_beat);
- const double total_beats = (tick_at_time + bbt_ticks) / BBT_Time::ticks_per_beat;
+ BBT_Time pos_bbt = bbt_at_minute_locked (_metrics, minute_at_sample (pos));
+
+ const double divisions = meter_section_at_minute_locked (_metrics, minute_at_sample (pos)).divisions_per_bar();
+
+ if (dir > 0) {
+ pos_bbt.bars += bbt.bars;
+
+ 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;
+ }
+
+ pos_bbt.beats += bbt.beats;
+ if ((double) pos_bbt.beats > divisions) {
+ pos_bbt.bars += 1;
+ pos_bbt.beats -= divisions;
+ }
+ const samplecnt_t pos_bbt_sample = sample_at_minute (minute_at_bbt_locked (_metrics, pos_bbt));
+
+ return pos_bbt_sample - pos;
+
+ } else {
+
+ if (pos_bbt.bars <= bbt.bars) {
+ pos_bbt.bars = 1;
+ } else {
+ pos_bbt.bars -= bbt.bars;
+ }
+
+ 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;
+ }
+
+ if (pos_bbt.beats <= bbt.beats) {
+ if (pos_bbt.bars > 1) {
+ pos_bbt.bars--;
+ pos_bbt.beats = divisions - (bbt.beats - pos_bbt.beats);
+ } else {
+ pos_bbt.beats = 1;
+ }
+ } else {
+ pos_bbt.beats -= bbt.beats;
+ }
+
+ return pos - sample_at_minute (minute_at_bbt_locked (_metrics, pos_bbt));
+ }
- return frame_at_beat_locked (_metrics, total_beats);
+ return 0;
}
-framepos_t
-TempoMap::round_to_bar (framepos_t fr, RoundMode dir)
+MusicSample
+TempoMap::round_to_bar (samplepos_t fr, RoundMode dir)
{
return round_to_type (fr, dir, Bar);
}
-framepos_t
-TempoMap::round_to_beat (framepos_t fr, RoundMode dir)
+MusicSample
+TempoMap::round_to_beat (samplepos_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)
+MusicSample
+TempoMap::round_to_quarter_note_subdivision (samplepos_t fr, int sub_num, RoundMode dir)
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- uint32_t ticks = (uint32_t) floor (beat_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_sample (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 MusicSample (0, 0);
}
/* step back to previous beat */
--beats;
}
}
- const framepos_t ret_frame = frame_at_beat_locked (_metrics, beats + (ticks / BBT_Time::ticks_per_beat));
-
- return ret_frame;
-}
-
-void
-TempoMap::round_bbt (BBT_Time& when, const int32_t& sub_num, RoundMode dir)
-{
- if (sub_num == -1) {
- if (dir > 0) {
- ++when.bars;
- when.beats = 1;
- when.ticks = 0;
- } else if (dir < 0) {
- when.beats = 1;
- when.ticks = 0;
- } else {
- const double bpb = meter_section_at_beat (bbt_to_beats_locked (_metrics, when)).divisions_per_bar();
- if ((double) when.beats > bpb / 2.0) {
- ++when.bars;
- }
- when.beats = 1;
- when.ticks = 0;
- }
-
- return;
-
- } else if (sub_num == 0) {
- const double bpb = meter_section_at_beat (bbt_to_beats_locked (_metrics, when)).divisions_per_bar();
- if ((double) when.ticks > BBT_Time::ticks_per_beat / 2.0) {
- ++when.beats;
- while ((double) when.beats > bpb) {
- ++when.bars;
- when.beats -= (uint32_t) floor (bpb);
- }
- }
- when.ticks = 0;
-
- return;
- }
-
- const uint32_t ticks_one_subdivisions_worth = BBT_Time::ticks_per_beat / sub_num;
-
- if (dir > 0) {
- /* round to next (or same iff dir == RoundUpMaybe) */
-
- uint32_t mod = when.ticks % ticks_one_subdivisions_worth;
-
- 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 */
- when.ticks += ticks_one_subdivisions_worth;
-
- } else {
- /* not on subdivision, compute distance to next subdivision */
-
- when.ticks += ticks_one_subdivisions_worth - mod;
- }
-
- if (when.ticks >= BBT_Time::ticks_per_beat) {
- when.ticks -= BBT_Time::ticks_per_beat;
- }
-
- } else if (dir < 0) {
- /* round to previous (or same iff dir == RoundDownMaybe) */
-
- uint32_t difference = when.ticks % ticks_one_subdivisions_worth;
-
- 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;
- }
-
- if (when.ticks < difference) {
- when.ticks = BBT_Time::ticks_per_beat - when.ticks;
- } else {
- when.ticks -= difference;
- }
-
- } else {
- /* round to nearest */ double rem;
- if ((rem = fmod ((double) when.ticks, (double) ticks_one_subdivisions_worth)) > (ticks_one_subdivisions_worth / 2.0)) {
- /* closer to the next subdivision, so shift forward */
-
- when.ticks = when.ticks + (ticks_one_subdivisions_worth - rem);
-
- if (when.ticks > Timecode::BBT_Time::ticks_per_beat) {
- ++when.beats;
- when.ticks -= Timecode::BBT_Time::ticks_per_beat;
- }
-
- } else if (rem > 0) {
- /* closer to previous subdivision, so shift backward */
+ MusicSample ret (0, 0);
+ ret.sample = sample_at_minute (minute_at_pulse_locked (_metrics, (beats + (ticks / BBT_Time::ticks_per_beat)) / 4.0));
+ ret.division = sub_num;
- if (rem > when.ticks) {
- if (when.beats == 0) {
- /* can't go backwards past zero, so ... */
- }
- /* step back to previous beat */
- --when.beats;
- when.ticks = Timecode::BBT_Time::ticks_per_beat - rem;
- } else {
- when.ticks = when.ticks - rem;
- }
- }
- }
+ return ret;
}
-framepos_t
-TempoMap::round_to_type (framepos_t frame, RoundMode dir, BBTPointType type)
+MusicSample
+TempoMap::round_to_type (samplepos_t sample, RoundMode dir, BBTPointType type)
{
Glib::Threads::RWLock::ReaderLock lm (lock);
-
- const double beat_at_framepos = beat_at_frame_locked (_metrics, frame);
- BBT_Time bbt (beats_to_bbt_locked (_metrics, beat_at_framepos));
+ const double minute = minute_at_sample (sample);
+ const double beat_at_samplepos = max (0.0, beat_at_minute_locked (_metrics, minute));
+ BBT_Time bbt (bbt_at_beat_locked (_metrics, beat_at_samplepos));
+ MusicSample ret (0, 0);
switch (type) {
case Bar:
+ ret.division = -1;
+
if (dir < 0) {
- /* find bar previous to 'frame' */
+ /* find bar previous to 'sample' */
+ if (bbt.bars > 0)
+ --bbt.bars;
bbt.beats = 1;
bbt.ticks = 0;
- return frame_time_locked (_metrics, bbt);
+
+ ret.sample = sample_at_minute (minute_at_bbt_locked (_metrics, bbt));
+
+ return ret;
} else if (dir > 0) {
- /* find bar following 'frame' */
+ /* find bar following 'sample' */
++bbt.bars;
bbt.beats = 1;
bbt.ticks = 0;
- return frame_time_locked (_metrics, bbt);
+
+ ret.sample = sample_at_minute (minute_at_bbt_locked (_metrics, bbt));
+
+ return ret;
} else {
/* true rounding: find nearest bar */
- framepos_t raw_ft = frame_time_locked (_metrics, bbt);
+ samplepos_t raw_ft = sample_at_minute (minute_at_bbt_locked (_metrics, bbt));
bbt.beats = 1;
bbt.ticks = 0;
- framepos_t prev_ft = frame_time_locked (_metrics, bbt);
+ samplepos_t prev_ft = sample_at_minute (minute_at_bbt_locked (_metrics, bbt));
++bbt.bars;
- framepos_t next_ft = frame_time_locked (_metrics, bbt);
+ samplepos_t next_ft = sample_at_minute (minute_at_bbt_locked (_metrics, bbt));
+
+ if ((raw_ft - prev_ft) > (next_ft - prev_ft) / 2) {
+ ret.sample = next_ft;
- if ((raw_ft - prev_ft) > (next_ft - prev_ft) / 2) {
- return next_ft;
+ return ret;
} else {
- return prev_ft;
+ --bbt.bars;
+ ret.sample = prev_ft;
+
+ return ret;
}
}
break;
case Beat:
+ ret.division = 1;
+
if (dir < 0) {
- return frame_at_beat_locked (_metrics, floor (beat_at_framepos));
+ ret.sample = sample_at_minute (minute_at_beat_locked (_metrics, floor (beat_at_samplepos)));
+
+ return ret;
} else if (dir > 0) {
- return frame_at_beat_locked (_metrics, ceil (beat_at_framepos));
+ ret.sample = sample_at_minute (minute_at_beat_locked (_metrics, ceil (beat_at_samplepos)));
+
+ return ret;
} else {
- return frame_at_beat_locked (_metrics, floor (beat_at_framepos + 0.5));
+ ret.sample = sample_at_minute (minute_at_beat_locked (_metrics, floor (beat_at_samplepos + 0.5)));
+
+ return ret;
}
break;
}
- return 0;
+ return MusicSample (0, 0);
}
void
TempoMap::get_grid (vector<TempoMap::BBTPoint>& points,
- framepos_t lower, framepos_t upper)
+ samplepos_t lower, samplepos_t upper, uint32_t bar_mod)
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- int32_t cnt = ceil (beat_at_frame_locked (_metrics, lower));
- framecnt_t pos = 0;
+ int32_t cnt = ceil (beat_at_minute_locked (_metrics, minute_at_sample (lower)));
+ samplecnt_t pos = 0;
/* although the map handles negative beats, bbt doesn't. */
if (cnt < 0.0) {
cnt = 0.0;
}
- while (pos < upper) {
- pos = frame_at_beat_locked (_metrics, cnt);
- const TempoSection tempo = tempo_section_at_locked (_metrics, pos);
- const MeterSection meter = meter_section_at_locked (_metrics, pos);
- const BBT_Time bbt = beats_to_bbt (cnt);
- points.push_back (BBTPoint (meter, tempo_at_locked (_metrics, pos), pos, bbt.bars, bbt.beats, tempo.c_func()));
- ++cnt;
+
+ if (minute_at_beat_locked (_metrics, cnt) >= minute_at_sample (upper)) {
+ return;
+ }
+ if (bar_mod == 0) {
+ while (pos >= 0 && pos < upper) {
+ pos = sample_at_minute (minute_at_beat_locked (_metrics, cnt));
+ const MeterSection meter = meter_section_at_minute_locked (_metrics, minute_at_sample (pos));
+ const BBT_Time bbt = bbt_at_beat_locked (_metrics, cnt);
+ const double qn = pulse_at_beat_locked (_metrics, cnt) * 4.0;
+
+ points.push_back (BBTPoint (meter, tempo_at_minute_locked (_metrics, minute_at_sample (pos)), pos, bbt.bars, bbt.beats, qn));
+ ++cnt;
+ }
+ } else {
+ BBT_Time bbt = bbt_at_minute_locked (_metrics, minute_at_sample (lower));
+ bbt.beats = 1;
+ bbt.ticks = 0;
+
+ if (bar_mod != 1) {
+ bbt.bars -= bbt.bars % bar_mod;
+ ++bbt.bars;
+ }
+
+ while (pos >= 0 && pos < upper) {
+ pos = sample_at_minute (minute_at_bbt_locked (_metrics, bbt));
+ const MeterSection meter = meter_section_at_minute_locked (_metrics, minute_at_sample (pos));
+ const double qn = pulse_at_bbt_locked (_metrics, bbt) * 4.0;
+
+ points.push_back (BBTPoint (meter, tempo_at_minute_locked (_metrics, minute_at_sample (pos)), pos, bbt.bars, bbt.beats, qn));
+ bbt.bars += bar_mod;
+ }
}
}
const TempoSection&
-TempoMap::tempo_section_at (framepos_t frame) const
+TempoMap::tempo_section_at_sample (samplepos_t sample) const
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- return tempo_section_at_locked (_metrics, frame);
+
+ return tempo_section_at_minute_locked (_metrics, minute_at_sample (sample));
+}
+
+TempoSection&
+TempoMap::tempo_section_at_sample (samplepos_t sample)
+{
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+
+ return tempo_section_at_minute_locked (_metrics, minute_at_sample (sample));
}
const TempoSection&
-TempoMap::tempo_section_at_locked (const Metrics& metrics, framepos_t frame) const
+TempoMap::tempo_section_at_minute_locked (const Metrics& metrics, double minute) const
{
- Metrics::const_iterator i;
TempoSection* prev = 0;
- for (i = metrics.begin(); i != metrics.end(); ++i) {
- TempoSection* t;
+ TempoSection* t;
- if ((t = dynamic_cast<TempoSection*> (*i)) != 0) {
+ 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->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
{
TempoSection* prev_t = 0;
const MeterSection* prev_m = &meter_section_at_beat_locked (metrics, beat);
+ TempoSection* t;
+
for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
- TempoSection* t;
- if ((t = dynamic_cast<TempoSection*> (*i)) != 0) {
+ 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;
}
-const TempoSection&
-TempoMap::tempo_section_at_pulse_locked (const Metrics& metrics, const double& pulse) const
+TempoSection*
+TempoMap::previous_tempo_section (TempoSection* ts) const
{
- TempoSection* prev_t = 0;
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+
+ return previous_tempo_section_locked (_metrics, ts);
+
+}
+
+TempoSection*
+TempoMap::previous_tempo_section_locked (const Metrics& metrics, TempoSection* ts) const
+{
+ if (!ts) {
+ return 0;
+ }
+
+ TempoSection* prev = 0;
for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
- TempoSection* t;
- if ((t = dynamic_cast<TempoSection*> (*i)) != 0) {
- if (prev_t && t->pulse() > pulse) {
- break;
+
+ if ((*i)->is_tempo()) {
+ TempoSection* t = static_cast<TempoSection*> (*i);
+
+ if (!t->active()) {
+ continue;
}
- prev_t = t;
+
+ if (prev && t == ts) {
+
+ return prev;
+ }
+
+ prev = t;
}
+ }
+ if (prev == 0) {
+ fatal << endmsg;
+ abort(); /*NOTREACHED*/
}
- return *prev_t;
+
+ 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
+TempoSection*
+TempoMap::next_tempo_section (TempoSection* ts) const
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- const TempoSection* ts_at = &tempo_section_at_locked (_metrics, frame);
- const TempoSection* ts_after = 0;
- Metrics::const_iterator i;
+ return next_tempo_section_locked (_metrics, ts);
+}
- for (i = _metrics.begin(); i != _metrics.end(); ++i) {
- TempoSection* t;
+TempoSection*
+TempoMap::next_tempo_section_locked (const Metrics& metrics, TempoSection* ts) const
+{
+ if (!ts) {
+ return 0;
+ }
+
+ 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 = dynamic_cast<TempoSection*> (*i)) != 0) {
if (!t->active()) {
continue;
}
- if ((*i)->frame() > frame) {
- ts_after = t;
- break;
+
+ if (prev && prev == ts) {
+
+ return t;
}
+
+ prev = t;
}
}
- if (ts_after) {
- return (60.0 * _frame_rate) / (ts_at->tempo_at_frame (frame, _frame_rate));
+ if (prev == 0) {
+ fatal << endmsg;
+ abort(); /*NOTREACHED*/
}
- /* must be treated as constant tempo */
- return ts_at->frames_per_beat (_frame_rate);
-}
-const Tempo
-TempoMap::tempo_at_locked (const Metrics& metrics, const framepos_t& frame) const
+ return 0;
+}
+/* don't use this to calculate length (the tempo is only correct for this sample).
+ do that stuff based on the beat_at_sample and sample_at_beat api
+*/
+double
+TempoMap::samples_per_quarter_note_at (const samplepos_t sample, const samplecnt_t sr) const
{
- TempoSection* prev_t = 0;
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+ const TempoSection* ts_at = 0;
+ const TempoSection* ts_after = 0;
Metrics::const_iterator i;
+ TempoSection* t;
for (i = _metrics.begin(); i != _metrics.end(); ++i) {
- TempoSection* t;
- if ((t = dynamic_cast<TempoSection*> (*i)) != 0) {
+
+ if ((*i)->is_tempo()) {
+ t = static_cast<TempoSection*> (*i);
if (!t->active()) {
continue;
}
- if ((prev_t) && t->frame() > frame) {
- /* t is the section past frame */
- const double ret_bpm = prev_t->tempo_at_frame (frame, _frame_rate) * prev_t->note_type();
- const Tempo ret_tempo (ret_bpm, prev_t->note_type());
- return ret_tempo;
+ if (ts_at && (*i)->sample() > sample) {
+ ts_after = t;
+ break;
}
- prev_t = t;
+ ts_at = t;
}
}
+ assert (ts_at);
- const double ret = prev_t->beats_per_minute();
- const Tempo ret_tempo (ret, prev_t->note_type ());
-
- return ret_tempo;
+ if (ts_after) {
+ return (60.0 * _sample_rate) / ts_at->tempo_at_minute (minute_at_sample (sample)).quarter_notes_per_minute();
+ }
+ /* must be treated as constant tempo */
+ return ts_at->samples_per_quarter_note (_sample_rate);
}
-const Tempo
-TempoMap::tempo_at (const framepos_t& frame) const
+const MeterSection&
+TempoMap::meter_section_at_sample (samplepos_t sample) const
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- return tempo_at_locked (_metrics, frame);
+ return meter_section_at_minute_locked (_metrics, minute_at_sample (sample));
}
const MeterSection&
-TempoMap::meter_section_at_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;
+ MeterSection* m;
+
for (i = metrics.begin(); i != metrics.end(); ++i) {
- MeterSection* m;
- if ((m = dynamic_cast<MeterSection*> (*i)) != 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 (framepos_t frame) const
-{
- Glib::Threads::RWLock::ReaderLock lm (lock);
- return meter_section_at_locked (_metrics, frame);
-}
-
const MeterSection&
TempoMap::meter_section_at_beat_locked (const Metrics& metrics, const double& beat) const
{
for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
MeterSection* m;
- if ((m = dynamic_cast<MeterSection*> (*i)) != 0) {
+ if (!(*i)->is_tempo()) {
+ m = static_cast<MeterSection*> (*i);
if (prev_m && m->beat() > beat) {
break;
}
}
const Meter&
-TempoMap::meter_at (framepos_t frame) const
+TempoMap::meter_at_sample (samplepos_t sample) const
{
- TempoMetric m (metric_at (frame));
+ TempoMetric m (metric_at (sample));
return m.meter();
}
{
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;
if (!t->active()) {
continue;
}
+ /* Ramp type never existed in the era of this tempo section */
+ t->set_end_note_types_per_minute (t->note_types_per_minute());
- 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->end_note_types_per_minute() < 0.0) {
+ prev_t->set_end_note_types_per_minute (t->note_types_per_minute());
+ }
+ }
+
+ prev_t = t;
+ }
+ }
+
+ if (prev_t) {
+ prev_t->set_end_note_types_per_minute (prev_t->note_types_per_minute());
+ }
+}
XMLNode&
TempoMap::get_state ()
if (child->name() == TempoSection::xml_state_node_name) {
try {
- TempoSection* ts = new TempoSection (*child);
+ TempoSection* ts = new TempoSection (*child, _sample_rate);
_metrics.push_back (ts);
}
catch (failed_constructor& err){
error << _("Tempo map: could not set new state, restoring old one.") << endmsg;
_metrics = old_metrics;
+ old_metrics.clear();
break;
}
} else if (child->name() == MeterSection::xml_state_node_name) {
try {
- MeterSection* ms = new MeterSection (*child);
+ MeterSection* ms = new MeterSection (*child, _sample_rate);
_metrics.push_back (ms);
}
catch (failed_constructor& err) {
error << _("Tempo map: could not set new state, restoring old one.") << endmsg;
_metrics = old_metrics;
+ old_metrics.clear();
break;
}
}
}
- if (niter == nlist.end()) {
- MetricSectionSorter cmp;
- _metrics.sort (cmp);
- }
-
/* check for legacy sessions where bbt was the base musical unit for tempo */
for (Metrics::const_iterator i = _metrics.begin(); i != _metrics.end(); ++i) {
TempoSection* t;
fix_legacy_session();
break;
}
- break;
+
+ if (t->end_note_types_per_minute() < 0.0) {
+ fix_legacy_end_session();
+ break;
+ }
}
}
+ if (niter == nlist.end()) {
+ MetricSectionSorter cmp;
+ _metrics.sort (cmp);
+ }
+
/* check for multiple tempo/meters at the same location, which
ardour2 somehow allowed.
*/
TempoSection* ts;
TempoSection* prev_t;
if ((prev_m = dynamic_cast<MeterSection*>(*prev)) != 0 && (ms = dynamic_cast<MeterSection*>(*i)) != 0) {
- if (prev_m->pulse() == ms->pulse()) {
- cerr << string_compose (_("Multiple meter definitions found at %1"), prev_m->pulse()) << endmsg;
- error << string_compose (_("Multiple meter definitions found at %1"), prev_m->pulse()) << endmsg;
+ if (prev_m->beat() == ms->beat()) {
+ cerr << string_compose (_("Multiple meter definitions found at %1"), prev_m->beat()) << endmsg;
+ error << string_compose (_("Multiple meter definitions found at %1"), prev_m->beat()) << endmsg;
return -1;
}
} else if ((prev_t = dynamic_cast<TempoSection*>(*prev)) != 0 && (ts = dynamic_cast<TempoSection*>(*i)) != 0) {
}
recompute_map (_metrics);
+
+ Metrics::const_iterator d = old_metrics.begin();
+ while (d != old_metrics.end()) {
+ delete (*d);
+ ++d;
+ }
+ old_metrics.clear ();
}
PropertyChanged (PropertyChange ());
}
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() << " sample= " << t->sample() << " (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->sample() << " | " << t->minute() << std::endl;
+ o << " previous : " << prev_t->note_types_per_minute()
+ << " | " << prev_t->pulse() << " | " << prev_t->sample() << " | " << 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())
+ << " | " << sample_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()
+ << " sample= " << m->sample() << " pulse: " << m->pulse() << " beat : " << m->beat()
+ << " pos lock: " << enum_2_string (m->position_lock_style()) << " (initial? " << m->initial() << ')' << endl;
}
}
o << "------" << std::endl;
int cnt = 0;
for (Metrics::const_iterator i = _metrics.begin(); i != _metrics.end(); ++i) {
- if (dynamic_cast<const TempoSection*>(*i) != 0) {
+ if ((*i)->is_tempo()) {
cnt++;
}
}
int cnt = 0;
for (Metrics::const_iterator i = _metrics.begin(); i != _metrics.end(); ++i) {
- if (dynamic_cast<const MeterSection*>(*i) != 0) {
+ if (!(*i)->is_tempo()) {
cnt++;
}
}
}
void
-TempoMap::insert_time (framepos_t where, framecnt_t amount)
+TempoMap::insert_time (samplepos_t where, samplecnt_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 ();
-
- 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, beats_to_bbt_locked (_metrics, beat));
- ms->set_beat (start);
- ms->set_pulse (t->pulse());
- }
- ms->set_frame (prev->frame());
- }
+ for (Metrics::reverse_iterator i = _metrics.rbegin(); i != _metrics.rend(); ++i) {
+ if ((*i)->sample() >= where && !(*i)->initial ()) {
+ MeterSection* ms;
+ TempoSection* ts;
- } 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)->sample() + 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_time (m->frame(), bbt);
-
- // 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 (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)->sample() + amount, 0);
}
-
- prev = (*i);
}
-
- recompute_map (_metrics);
}
-
PropertyChanged (PropertyChange ());
}
+
bool
-TempoMap::remove_time (framepos_t where, framecnt_t amount)
+TempoMap::remove_time (samplepos_t where, samplecnt_t amount)
{
bool moved = false;
{
Glib::Threads::RWLock::WriterLock lm (lock);
for (Metrics::iterator i = _metrics.begin(); i != _metrics.end(); ++i) {
- if ((*i)->frame() >= where && (*i)->frame() < where+amount) {
+ if ((*i)->sample() >= where && (*i)->sample() < where+amount) {
metric_kill_list.push_back(*i);
TempoSection *lt = dynamic_cast<TempoSection*> (*i);
if (lt)
if (lm)
last_meter = lm;
}
- else if ((*i)->frame() >= where) {
+ else if ((*i)->sample() >= where) {
// TODO: make sure that moved tempo/meter markers are rounded to beat/bar boundaries
- (*i)->set_frame ((*i)->frame() - amount);
- if ((*i)->frame() == where) {
+ (*i)->set_minute ((*i)->minute() - minute_at_sample (amount));
+ if ((*i)->sample() == where) {
// marker was immediately after end of range
tempo_after = dynamic_cast<TempoSection*> (*i);
meter_after = dynamic_cast<MeterSection*> (*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_sample (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_sample (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 sample position, and return the result in samples.
* pos can be -ve, if required.
*/
-framepos_t
-TempoMap::framepos_plus_beats (framepos_t pos, Evoral::Beats beats) const
+samplepos_t
+TempoMap::samplepos_plus_qn (samplepos_t sample, Temporal::Beats beats) const
{
- return frame_at_beat (beat_at_frame (pos) + beats.to_double());
-}
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+ const double sample_qn = pulse_at_minute_locked (_metrics, minute_at_sample (sample)) * 4.0;
-/** 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
-{
- return frame_at_beat (beat_at_frame (pos) - beats.to_double());
+ return sample_at_minute (minute_at_pulse_locked (_metrics, (sample_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
+samplepos_t
+TempoMap::samplepos_plus_bbt (samplepos_t pos, BBT_Time op) const
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- BBT_Time pos_bbt = beats_to_bbt_locked (_metrics, beat_at_frame_locked (_metrics, pos));
+ BBT_Time pos_bbt = bbt_at_beat_locked (_metrics, beat_at_minute_locked (_metrics, minute_at_sample (pos)));
pos_bbt.ticks += op.ticks;
if (pos_bbt.ticks >= BBT_Time::ticks_per_beat) {
++pos_bbt.beats;
}
pos_bbt.beats += op.beats;
/* the meter in effect will start on the bar */
- double divisions_per_bar = meter_section_at_beat (bbt_to_beats_locked (_metrics, BBT_Time (pos_bbt.bars + op.bars, 1, 0))).divisions_per_bar();
+ double divisions_per_bar = meter_section_at_beat (beat_at_bbt_locked (_metrics, BBT_Time (pos_bbt.bars + op.bars, 1, 0))).divisions_per_bar();
while (pos_bbt.beats >= divisions_per_bar + 1) {
++pos_bbt.bars;
- divisions_per_bar = meter_section_at_beat (bbt_to_beats_locked (_metrics, BBT_Time (pos_bbt.bars + op.bars, 1, 0))).divisions_per_bar();
+ divisions_per_bar = meter_section_at_beat (beat_at_bbt_locked (_metrics, BBT_Time (pos_bbt.bars + op.bars, 1, 0))).divisions_per_bar();
pos_bbt.beats -= divisions_per_bar;
}
pos_bbt.bars += op.bars;
- return frame_time_locked (_metrics, pos_bbt);
+ return sample_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
+Temporal::Beats
+TempoMap::framewalk_to_qn (samplepos_t pos, samplecnt_t distance) const
{
- return Evoral::Beats (beat_at_frame (pos + distance) - beat_at_frame (pos));
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+
+ return Temporal::Beats (quarter_notes_between_samples_locked (_metrics, pos, pos + distance));
}
struct bbtcmp {
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&
operator<< (std::ostream& o, const MetricSection& section) {
- o << "MetricSection @ " << section.frame() << ' ';
+ o << "MetricSection @ " << section.sample() << ' ';
const TempoSection* ts;
const MeterSection* ms;
projects / ardour.git / blobdiff