#include "ardour/debug.h"
#include "ardour/lmath.h"
#include "ardour/tempo.h"
+#include "ardour/types_convert.h"
#include "pbd/i18n.h"
#include <locale.h>
/* _default tempo is 4/4 qtr=120 */
Meter TempoMap::_default_meter (4.0, 4.0);
-Tempo TempoMap::_default_tempo (120.0);
+Tempo TempoMap::_default_tempo (120.0, 4.0, 120.0);
framepos_t
MetricSection::frame_at_minute (const double& time) const
}
double
-MetricSection::minute_at_frame (const framepos_t& frame) const
+MetricSection::minute_at_frame (const framepos_t frame) const
{
return (frame / (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
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
/***********************************************************************/
+void
+MetricSection::add_state_to_node(XMLNode& node) const
+{
+ node.set_property ("pulse", _pulse);
+ node.set_property ("frame", frame());
+ node.set_property ("movable", !_initial);
+ node.set_property ("lock-style", _position_lock_style);
+}
+
+int
+MetricSection::set_state (const XMLNode& node, int /*version*/)
+{
+ node.get_property ("pulse", _pulse);
+
+ framepos_t frame;
+ if (node.get_property ("frame", frame)) {
+ set_minute (minute_at_frame (frame));
+ }
+
+ 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, framecnt_t sample_rate)
: MetricSection (0.0, 0, MusicTime, true, sample_rate)
, Tempo (TempoMap::default_tempo())
- , _c_func (0.0)
+ , _c (0.0)
, _active (true)
, _locked_to_meter (false)
+ , _clamped (false)
{
- XMLProperty const * prop;
- LocaleGuard lg;
BBT_Time bbt;
- double pulse;
- uint32_t frame;
- double minute;
-
- _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;
+ 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;
- }
- }
+ // Don't worry about return value, exception will be thrown on error
+ MetricSection::set_state (node, Stateful::loading_state_version);
- set_pulse (pulse);
-
- if ((prop = node.property ("frame")) != 0) {
- if (sscanf (prop->value().c_str(), "%" PRIu32, &frame) != 1) {
- error << _("TempoSection XML node has an illegal \"frame\" value") << endmsg;
- } else {
- set_minute (minute_at_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 ("minute")) != 0) {
- if (sscanf (prop->value().c_str(), "%lf", &minute) != 1) {
- error << _("TempoSection XML node has an illegal \"minute\" value") << endmsg;
- } else {
- set_minute (minute);
+ 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();
}
- }
-
- if ((prop = node.property ("beats-per-minute")) == 0) {
- error << _("TempoSection XML node has no \"beats-per-minute\" property") << endmsg;
- throw failed_constructor();
- }
-
- if (sscanf (prop->value().c_str(), "%lf", &_beats_per_minute) != 1 || _beats_per_minute < 0.0) {
- error << _("TempoSection XML node has an illegal \"beats_per_minute\" value") << endmsg;
- throw failed_constructor();
- }
-
- if ((prop = node.property ("note-type")) == 0) {
+ } else {
/* 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;
- throw failed_constructor();
}
+
+ if (!node.get_property ("clamped", _clamped)) {
+ _clamped = false;
}
- if ((prop = node.property ("movable")) == 0) {
- error << _("TempoSection XML node has no \"movable\" property") << endmsg;
- throw failed_constructor();
+ 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();
+ }
}
- 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), "%lf", pulse());
- root->add_property ("pulse", buf);
- snprintf (buf, sizeof (buf), "%li", frame());
- root->add_property ("frame", buf);
- snprintf (buf, sizeof (buf), "%lf", minute());
- root->add_property ("minute", buf);
- snprintf (buf, sizeof (buf), "%lf", _beats_per_minute);
- root->add_property ("beats-per-minute", buf);
- snprintf (buf, sizeof (buf), "%lf", _note_type);
- root->add_property ("note-type", buf);
- snprintf (buf, sizeof (buf), "%s", movable()?"yes":"no");
- root->add_property ("movable", buf);
- snprintf (buf, sizeof (buf), "%s", active()?"yes":"no");
- root->add_property ("active", buf);
- root->add_property ("tempo-type", enum_2_string (_type));
- root->add_property ("lock-style", enum_2_string (position_lock_style()));
- root->add_property ("locked-to-meter", locked_to_meter()?"yes":"no");
- return *root;
-}
+ MetricSection::add_state_to_node (*root);
-void
-TempoSection::set_type (Type type)
-{
- _type = type;
+ 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;
}
-/** returns the tempo in beats per minute at the zero-based (relative to session) minute.
+/** returns the Tempo at the session-relative minute.
*/
-double
+Tempo
TempoSection::tempo_at_minute (const double& m) const
{
-
- if (_type == Constant || _c_func == 0.0) {
- return beats_per_minute();
+ const bool constant = type() == Constant || _c == 0.0 || (initial() && m < minute());
+ if (constant) {
+ return Tempo (note_types_per_minute(), note_type());
}
- return _tempo_at_time (m - minute());
+ return Tempo (_tempo_at_time (m - minute()), _note_type, _end_note_types_per_minute);
}
-/** returns the zero-based minute (relative to session)
- where the tempo in beats per minute occurs in this section.
- pulse p is only used for constant tempi.
- note that the tempo map may have multiple such values.
+/** 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::minute_at_tempo (const double& bpm, const double& p) const
+TempoSection::minute_at_ntpm (const double& ntpm, const double& p) const
{
- if (_type == Constant || _c_func == 0.0) {
- return (((p - pulse()) * note_type()) / beats_per_minute()) + minute();
+ const bool constant = type() == Constant || _c == 0.0 || (initial() && p < pulse());
+ if (constant) {
+ return ((p - pulse()) / pulses_per_minute()) + minute();
}
- return _time_at_tempo (bpm) + minute();
+ return _time_at_tempo (ntpm) + minute();
}
-/** returns the tempo in beats per minute at the supplied pulse.
-*/
-double
+
+/** returns the Tempo at the supplied whole-note pulse.
+ */
+Tempo
TempoSection::tempo_at_pulse (const double& p) const
{
+ const bool constant = type() == Constant || _c == 0.0 || (initial() && p < pulse());
- if (_type == Constant || _c_func == 0.0) {
- return beats_per_minute();
+ if (constant) {
+ return Tempo (note_types_per_minute(), note_type());
}
- return _tempo_at_pulse (p - pulse());
+ return Tempo (_tempo_at_pulse (p - pulse()), _note_type, _end_note_types_per_minute);
}
-/** returns the pulse where the tempo in beats per minute occurs given frame f.
- frame f is only used for constant tempi.
- note that the session tempo map may have multiple locations where a given tempo occurs.
+/** 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::pulse_at_tempo (const double& bpm, const double& m) const
+TempoSection::pulse_at_ntpm (const double& ntpm, const double& m) const
{
- if (_type == Constant || _c_func == 0.0) {
- const double pulses = (((m - minute()) * beats_per_minute()) / note_type()) + 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_tempo (bpm) + pulse();
+ return _pulse_at_tempo (ntpm) + pulse();
}
-/** returns the pulse at the supplied session-relative minute.
+/** returns the whole-note pulse at the supplied session-relative minute.
*/
double
TempoSection::pulse_at_minute (const double& m) const
{
- if (_type == Constant || _c_func == 0.0) {
- return (((m - minute()) * beats_per_minute()) / _note_type) + pulse();
+ const bool constant = type() == Constant || _c == 0.0 || (initial() && m < minute());
+ if (constant) {
+ return ((m - minute()) * pulses_per_minute()) + pulse();
}
return _pulse_at_time (m - minute()) + pulse();
}
-/** returns the minute (relative to session start) at the supplied pulse.
+/** returns the session-relative minute at the supplied whole-note pulse.
*/
double
TempoSection::minute_at_pulse (const double& p) const
{
- if (_type == Constant || _c_func == 0.0) {
- return (((p - pulse()) * note_type()) / beats_per_minute()) + minute();
+ const bool constant = type() == Constant || _c == 0.0 || (initial() && p < pulse());
+ if (constant) {
+ return ((p - pulse()) / pulses_per_minute()) + minute();
}
return _time_at_pulse (p - pulse()) + minute();
}
+/** returns thw whole-note pulse at session frame position f.
+ * @param f the frame position.
+ * @return the position in whole-note pulses corresponding to f
+ *
+ * for use with musical units whose granularity is coarser than frames (e.g. ticks)
+*/
+double
+TempoSection::pulse_at_frame (const framepos_t f) const
+{
+ const bool constant = type() == Constant || _c == 0.0 || (initial() && f < frame());
+ if (constant) {
+ return (minute_at_frame (f - frame()) * pulses_per_minute()) + pulse();
+ }
+
+ return _pulse_at_time (minute_at_frame (f - frame())) + pulse();
+}
+
+framepos_t
+TempoSection::frame_at_pulse (const double& p) const
+{
+ const bool constant = type() == Constant || _c == 0.0 || (initial() && p < pulse());
+ if (constant) {
+ return frame_at_minute (((p - pulse()) / pulses_per_minute()) + minute());
+ }
+
+ return frame_at_minute (_time_at_pulse (p - pulse()) + minute());
+}
+
/*
Ramp Overview
*/
-/*
- compute this ramp's function constant using the end tempo (in qn beats 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
+TempoSection::compute_c_pulse (const double& end_npm, const double& end_pulse) const
{
- double const log_tempo_ratio = log (end_bpm / beats_per_minute());
- return (beats_per_minute() * expm1 (log_tempo_ratio)) / ((end_pulse - pulse()) * _note_type);
+ if (note_types_per_minute() == end_npm || type() == Constant) {
+ return 0.0;
+ }
+
+ 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 later tempo section, given tempo (quarter notes/min.) and distance (in frames) from session origin */
+/** 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::compute_c_func_minute (const double& end_bpm, const double& end_minute) const
+TempoSection::compute_c_minute (const double& end_npm, const double& end_minute) const
{
- return c_func (end_bpm, end_minute - minute());
+ 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_bpm, double c_func) const
+TempoSection::a_func (double end_npm, double c) const
{
- return log (end_bpm / beats_per_minute()) / c_func;
+ return log (end_npm / note_types_per_minute()) / c;
}
/*function constant*/
double
-TempoSection::c_func (double end_bpm, double end_time) const
+TempoSection::c_func (double end_npm, double end_time) const
{
- return log (end_bpm / beats_per_minute()) / end_time;
+ return log (end_npm / note_types_per_minute()) / end_time;
}
-/* tempo in bpm at time in minutes */
+/* tempo in note types per minute at time in minutes */
double
TempoSection::_tempo_at_time (const double& time) const
{
- return exp (_c_func * time) * beats_per_minute();
+ return exp (_c * time) * note_types_per_minute();
}
-/* time in minutes at tempo in bpm */
+/* time in minutes at tempo in note types per minute */
double
-TempoSection::_time_at_tempo (const double& tempo) const
+TempoSection::_time_at_tempo (const double& npm) const
{
- return log (tempo / beats_per_minute()) / _c_func;
+ return log (npm / note_types_per_minute()) / _c;
}
-/* pulse at tempo in bpm */
+/* pulse at tempo in note types per minute */
double
-TempoSection::_pulse_at_tempo (const double& tempo) const
+TempoSection::_pulse_at_tempo (const double& npm) const
{
- return ((tempo - beats_per_minute()) / _c_func) / _note_type;
+ return ((npm - note_types_per_minute()) / _c) / _note_type;
}
-/* tempo in bpm at pulse */
+/* tempo in note types per minute at pulse */
double
TempoSection::_tempo_at_pulse (const double& pulse) const
{
- return (pulse * _note_type * _c_func) + beats_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
{
- return expm1 (_c_func * time) * (beats_per_minute() / (_c_func * _note_type));
+ 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
{
- return log1p ((_c_func * pulse * _note_type) / beats_per_minute()) / _c_func;
+ return log1p ((_c * pulse * _note_type) / note_types_per_minute()) / _c;
}
/***********************************************************************/
MeterSection::MeterSection (const XMLNode& node, const framecnt_t sample_rate)
: MetricSection (0.0, 0, MusicTime, false, sample_rate), Meter (TempoMap::default_meter())
{
- XMLProperty const * prop;
- LocaleGuard lg;
- BBT_Time bbt;
- double pulse = 0.0;
- double beat = 0.0;
- framepos_t frame = 0;
pair<double, BBT_Time> start;
- double minute = 0.0;
+ 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_minute (minute_at_frame (frame));
- }
- }
- if ((prop = node.property ("minute")) != 0) {
- if (sscanf (prop->value().c_str(), "%lf", &minute) != 1) {
- error << _("MeterSection XML node has an illegal \"frame\" value") << endmsg;
- } else {
- set_minute (minute);
- }
- }
-
/* 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), "%lf", _note_type);
- root->add_property ("note-type", buf);
- snprintf (buf, sizeof (buf), "%li", frame());
- root->add_property ("frame", buf);
- snprintf (buf, sizeof (buf), "%lf", minute());
- root->add_property ("minute", buf);
- root->add_property ("lock-style", enum_2_string (position_lock_style()));
- snprintf (buf, sizeof (buf), "%lf", _divisions_per_bar);
- root->add_property ("divisions-per-bar", buf);
- snprintf (buf, sizeof (buf), "%s", movable()?"yes":"no");
- 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
- The Shaggs - Things I Wonder
- https://www.youtube.com/watch?v=9wQK6zMJOoQ
-
- Tempo is the rate of the musical pulse.
- Meter divides pulse into measures and beats.
-
- TempoSection - provides pulse in the form of beats_per_minute() - the number of quarter notes in one minute.
- Note that 'beats' in Tempo::beats_per_minute() are quarter notes (pulse based). In the rest of tempo map,
- 'beat' usually refers to accumulated BBT beats (pulse and meter based).
+ 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
+
+ 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).
+
+ 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.
- MeterSecion - divides pulse into measures (via divisions_per_bar) and beats (via note_divisor).
-
- Both tempo and meter have a pulse position and a frame position.
- Meters also have a beat position, which is always 0.0 for the first one.
TempoSection and MeterSection may be locked to either audio or music (position lock style).
- The lock style determines the 'true' position of the section wich is used to calculate the other postion parameters of the section.
-
- 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.
+ The lock style determines the location type to be kept as a reference when location is recalculated.
- With tempo sections potentially being ramped, meters provide a way of mapping beats to whole pulses without
- referring to the tempo function(s) involved as the distance in whole pulses between a meter and a subsequent beat is
- sb->beat() - meter->beat() / meter->note_divisor().
- Because every meter falls on a known pulse, (derived from its bar), the rest is easy as the duration in pulses between
- two meters is of course
- (meater_b->bar - meter_a->bar) * meter_a->divisions_per_bar / meter_a->note_divisor.
+ The first tempo and meter are special. they must move together, and are locked to audio.
+ Audio locked tempi which lie before the first meter are made inactive.
- Beat calculations are based on meter sections and all pulse and tempo calculations are based on tempo sections.
- Beat to frame conversion of course requires the use of meter and tempo.
+ Recomputing the map is the process where the 'missing' location types are calculated.
+ We construct the tempo map by first using the locked location type of each section
+ to determine non-locked location types (pulse or minute position).
+ We then use this map to find the pulse or minute position of each meter (again depending on lock style).
- Remembering that ramped tempo sections interact, it is important to avoid referring to any other tempos when moving tempo sections,
- Here, beats (meters) are used to determine the new pulse (see predict_tempo_position())
-
- Recomputing the map is the process where the 'missing' position
- (tempo pulse or meter pulse & beat in the case of AudioTime, frame for MusicTime) is calculated.
- We construct the tempo map by first using the frame or pulse position (depending on position lock style) of each tempo.
- We then use this tempo map (really just the tempos) to find the pulse or frame position of each meter (again depending on lock style).
-
- Having done this, we can now find any musical duration by selecting the tempo and meter covering the position (or tempo) in question
- and querying its appropriate meter/tempo.
+ Having done this, we can now traverse the Metrics list by pulse or minute
+ to query its relevant meter/tempo.
It is important to keep the _metrics in an order that makes sense.
Because ramped MusicTime and AudioTime tempos can interact with each other,
beat_at_frame (frame_at_beat (beat)) != beat due to the time quantization of frame_at_beat().
Doing the second one will result in a beat distance error of up to 0.5 audio samples.
- So instead work in pulses and/or beats and only use beat position to caclulate frame position (e.g. after tempo change).
- For audio-locked objects, use frame position to calculate beat position.
+ frames_between_quarter_notes () eliminats this effect when determining time duration
+ from Beats distance, or instead work in quarter-notes and/or beats and convert to frames last.
- The above pointless example would then do:
- beat_at_pulse (pulse_at_beat (beat)) to avoid rounding.
+ The above pointless example could instead do:
+ beat_at_quarter_note (quarter_note_at_beat (beat)) to avoid rounding.
+
+ The Shaggs - Things I Wonder
+ https://www.youtube.com/watch?v=9wQK6zMJOoQ
*/
struct MetricSectionSorter {
_frame_rate = fr;
BBT_Time start (1, 1, 0);
- TempoSection *t = new TempoSection (0.0, 0.0, _default_tempo.beats_per_minute(), _default_tempo.note_type(), TempoSection::Ramp, AudioTime, fr);
+ 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_movable (false);
- m->set_movable (false);
+ t->set_initial (true);
+ t->set_locked_to_meter (true);
+
+ m->set_initial (true);
/* note: frame time is correct (zero) for both of these */
}
+TempoMap&
+TempoMap::operator= (TempoMap const & other)
+{
+ if (&other != this) {
+ Glib::Threads::RWLock::ReaderLock lr (other.lock);
+ Glib::Threads::RWLock::WriterLock lm (lock);
+ _frame_rate = other._frame_rate;
+
+ Metrics::const_iterator d = _metrics.begin();
+ while (d != _metrics.end()) {
+ delete (*d);
+ ++d;
+ }
+ _metrics.clear();
+
+ for (Metrics::const_iterator m = other._metrics.begin(); m != other._metrics.end(); ++m) {
+ TempoSection 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();
for (i = _metrics.begin(); i != _metrics.end(); ++i) {
if (dynamic_cast<TempoSection*> (*i) != 0) {
if (tempo.frame() == (*i)->frame()) {
- if ((*i)->movable()) {
+ if (!(*i)->initial()) {
delete (*i);
_metrics.erase (i);
return true;
for (Metrics::iterator i = _metrics.begin(); i != _metrics.end(); ++i) {
if (dynamic_cast<MeterSection*> (*i) != 0) {
if (meter.frame() == (*i)->frame()) {
- if ((*i)->movable()) {
+ if (!(*i)->initial()) {
delete (*i);
_metrics.erase (i);
return true;
bool const ipm = insert_tempo->position_lock_style() == MusicTime;
if ((ipm && tempo->pulse() == insert_tempo->pulse()) || (!ipm && tempo->frame() == insert_tempo->frame())) {
- if (!tempo->movable()) {
+ if (tempo->initial()) {
/* can't (re)move this section, so overwrite
* its data content (but not its properties as
*(dynamic_cast<Tempo*>(*i)) = *(dynamic_cast<Tempo*>(insert_tempo));
(*i)->set_position_lock_style (AudioTime);
- TempoSection* t;
- if ((t = dynamic_cast<TempoSection*>(*i)) != 0) {
- t->set_type (insert_tempo->type());
- }
need_add = false;
} else {
delete (*i);
if ((ipm && meter->beat() == insert_meter->beat()) || (!ipm && meter->frame() == insert_meter->frame())) {
- if (!meter->movable()) {
+ if (meter->initial()) {
/* can't (re)move this section, so overwrite
* its data content (but not its properties as
MeterSection* const insert_meter = dynamic_cast<MeterSection*> (section);
TempoSection* const insert_tempo = dynamic_cast<TempoSection*> (section);
Metrics::iterator i;
+
if (insert_meter) {
+ TempoSection* prev_t = 0;
+
for (i = _metrics.begin(); i != _metrics.end(); ++i) {
MeterSection* const meter = dynamic_cast<MeterSection*> (*i);
+ bool const ipm = insert_meter->position_lock_style() == MusicTime;
if (meter) {
- bool const ipm = insert_meter->position_lock_style() == MusicTime;
if ((ipm && meter->beat() > insert_meter->beat()) || (!ipm && meter->frame() > insert_meter->frame())) {
break;
}
+ } else {
+ if (prev_t && prev_t->locked_to_meter() && (!ipm && prev_t->frame() == insert_meter->frame())) {
+ break;
+ }
+
+ prev_t = dynamic_cast<TempoSection*> (*i);
}
}
} else if (insert_tempo) {
if (tempo) {
bool const ipm = insert_tempo->position_lock_style() == MusicTime;
- if ((ipm && tempo->pulse() > insert_tempo->pulse()) || (!ipm && tempo->frame() > insert_tempo->frame())) {
+ const bool lm = insert_tempo->locked_to_meter();
+ if ((ipm && tempo->pulse() > insert_tempo->pulse()) || (!ipm && tempo->frame() > insert_tempo->frame())
+ || (lm && tempo->pulse() > insert_tempo->pulse())) {
break;
}
}
}
_metrics.insert (i, section);
- //dump (_metrics, std::cout);
+ //dump (std::cout);
}
}
/* user supplies the exact pulse if pls == MusicTime */
TempoSection*
-TempoMap::add_tempo (const Tempo& tempo, const double& pulse, const framepos_t& frame, ARDOUR::TempoSection::Type type, PositionLockStyle pls)
+TempoMap::add_tempo (const Tempo& tempo, const double& pulse, const framepos_t frame, PositionLockStyle pls)
{
+ if (tempo.note_types_per_minute() <= 0.0) {
+ warning << "Cannot add tempo. note types per minute must be greater than zero." << endmsg;
+ return 0;
+ }
+
TempoSection* ts = 0;
{
Glib::Threads::RWLock::WriterLock lm (lock);
- ts = add_tempo_locked (tempo, pulse, minute_at_frame (frame), type, pls, true);
- }
+ /* here we default to not clamped for a new tempo section. preference? */
+ ts = add_tempo_locked (tempo, pulse, minute_at_frame (frame), pls, true, false, false);
+ recompute_map (_metrics);
+ }
PropertyChanged (PropertyChange ());
}
void
-TempoMap::replace_tempo (const TempoSection& ts, const Tempo& tempo, const double& pulse, const framepos_t& frame, TempoSection::Type type, PositionLockStyle pls)
+TempoMap::replace_tempo (TempoSection& ts, const Tempo& tempo, const double& pulse, const framepos_t frame, PositionLockStyle pls)
{
- const bool locked_to_meter = ts.locked_to_meter();
+ 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, pulse, minute_at_frame (frame), type, pls, true, locked_to_meter);
+ if (!ts.initial()) {
+ if (locked_to_meter) {
+ {
+ /* cannot move a meter-locked tempo section */
+ *static_cast<Tempo*>(&ts) = tempo;
+ recompute_map (_metrics);
+ }
+ } else {
+ remove_tempo_locked (ts);
+ new_ts = add_tempo_locked (tempo, pulse, minute_at_frame (frame), pls, true, locked_to_meter, 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_frame (frame));
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_locked (const Tempo& tempo, double pulse, double minute
- , TempoSection::Type type, PositionLockStyle pls, bool recompute, bool locked_to_meter)
+ , PositionLockStyle pls, bool recompute, bool locked_to_meter, bool clamped)
{
- TempoSection* t = new TempoSection (pulse, minute, tempo.beats_per_minute(), tempo.note_type(), type, pls, _frame_rate);
+ TempoSection* t = new TempoSection (pulse, minute, tempo, pls, _frame_rate);
t->set_locked_to_meter (locked_to_meter);
- bool solved = false;
+ 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;
+ }
+ }
+
if (recompute) {
if (pls == AudioTime) {
- solved = solve_map_minute (_metrics, t, t->minute());
+ solve_map_minute (_metrics, t, t->minute());
} else {
- solved = solve_map_pulse (_metrics, t, t->pulse());
+ solve_map_pulse (_metrics, t, t->pulse());
}
recompute_meters (_metrics);
}
- if (!solved && recompute) {
- recompute_map (_metrics);
- }
-
return t;
}
MeterSection*
-TempoMap::add_meter (const Meter& meter, const double& beat, const Timecode::BBT_Time& where, PositionLockStyle pls)
+TempoMap::add_meter (const Meter& meter, const Timecode::BBT_Time& where, framepos_t frame, PositionLockStyle pls)
{
MeterSection* m = 0;
{
Glib::Threads::RWLock::WriterLock lm (lock);
- m = add_meter_locked (meter, beat, where, pls, true);
+ m = add_meter_locked (meter, where, frame, pls, true);
}
#ifndef NDEBUG
if (DEBUG_ENABLED(DEBUG::TempoMap)) {
- dump (_metrics, std::cerr);
+ dump (std::cerr);
}
#endif
}
void
-TempoMap::replace_meter (const MeterSection& ms, const Meter& meter, const BBT_Time& where, PositionLockStyle pls)
+TempoMap::replace_meter (const MeterSection& ms, const Meter& meter, const BBT_Time& where, framepos_t frame, PositionLockStyle pls)
{
{
Glib::Threads::RWLock::WriterLock lm (lock);
- const double beat = beat_at_bbt_locked (_metrics, where);
- if (ms.movable()) {
+ if (!ms.initial()) {
remove_meter_locked (ms);
- add_meter_locked (meter, beat, where, pls, true);
+ add_meter_locked (meter, where, frame, 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_minute (minute_at_frame (frame));
+ first.set_minute (minute_at_frame (frame));
pair<double, BBT_Time> beat = make_pair (0.0, BBT_Time (1, 1, 0));
first.set_beat (beat);
first_t.set_minute (first.minute());
+ first_t.set_locked_to_meter (true);
first_t.set_pulse (0.0);
first_t.set_position_lock_style (AudioTime);
recompute_map (_metrics);
}
MeterSection*
-TempoMap::add_meter_locked (const Meter& meter, double beat, const BBT_Time& where, PositionLockStyle pls, bool recompute)
+TempoMap::add_meter_locked (const Meter& meter, const BBT_Time& bbt, framepos_t frame, PositionLockStyle pls, bool recompute)
{
- const MeterSection& prev_m = meter_section_at_minute_locked (_metrics, minute_at_beat_locked (_metrics, beat) - minute_at_frame (1));
- const double pulse = ((where.bars - prev_m.bbt().bars) * (prev_m.divisions_per_bar() / prev_m.note_divisor())) + prev_m.pulse();
- const double time_minutes = minute_at_pulse_locked (_metrics, pulse);
- TempoSection* mlt = 0;
+ 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_frame (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 */
- mlt = add_tempo_locked (tempo_at_minute_locked (_metrics, time_minutes), pulse, time_minutes, TempoSection::Ramp, AudioTime, true, true);
+ /* add meter-locked tempo at the natural time in the current map (frame 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;
}
-
}
+ /* 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, _frame_rate);
- MeterSection* new_meter = new MeterSection (pulse, time_minutes, beat, where, meter.divisions_per_bar(), meter.note_divisor(), pls, _frame_rate);
bool solved = false;
do_insert (new_meter);
if (recompute) {
if (pls == AudioTime) {
- solved = solve_map_minute (_metrics, new_meter, time_minutes);
+ /* now set the audio locked meter's position to frame */
+ solved = solve_map_minute (_metrics, new_meter, minute_at_frame (frame));
+ /* we failed, most likely due to some impossible frame requirement wrt audio-locked tempi.
+ fudge frame so that the meter ends up at its BBT position instead.
+ */
+ if (!solved) {
+ solved = solve_map_minute (_metrics, new_meter, minute_at_frame (prev_m.frame() + 1));
+ }
} else {
- solved = solve_map_bbt (_metrics, new_meter, where);
+ 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).
}
void
-TempoMap::change_initial_tempo (double beats_per_minute, double note_type)
+TempoMap::change_initial_tempo (double note_types_per_minute, double note_type, double end_note_types_per_minute)
{
- Tempo newtempo (beats_per_minute, note_type);
+ Tempo newtempo (note_types_per_minute, note_type, end_note_types_per_minute);
TempoSection* t;
for (Metrics::iterator i = _metrics.begin(); i != _metrics.end(); ++i) {
}
void
-TempoMap::change_existing_tempo_at (framepos_t where, double beats_per_minute, double note_type)
+TempoMap::change_existing_tempo_at (framepos_t where, double note_types_per_minute, double note_type, double end_ntpm)
{
- Tempo newtempo (beats_per_minute, note_type);
+ Tempo newtempo (note_types_per_minute, note_type, end_ntpm);
TempoSection* prev;
TempoSection* first;
if (!t->active()) {
continue;
}
- if (!t->movable()) {
+ if (t->initial()) {
return *t;
}
}
if (!t->active()) {
continue;
}
- if (!t->movable()) {
+ if (t->initial()) {
return *t;
}
}
if (!t->active()) {
continue;
}
- if (!t->movable()) {
+ if (t->initial()) {
if (!prev_t) {
t->set_pulse (0.0);
prev_t = t;
continue;
}
}
+
if (prev_t) {
if (t->position_lock_style() == AudioTime) {
- prev_t->set_c_func (prev_t->compute_c_func_minute (t->beats_per_minute(), t->minute()));
+ 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->beats_per_minute(), t->minute()));
+ 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->beats_per_minute(), t->pulse()));
- t->set_minute (prev_t->minute_at_tempo (t->beats_per_minute(), t->pulse()));
+ prev_t->set_c (prev_t->compute_c_pulse (prev_t->end_note_types_per_minute(), t->pulse()));
+ t->set_minute (prev_t->minute_at_ntpm (prev_t->end_note_types_per_minute(), t->pulse()));
}
}
prev_t = t;
}
}
- prev_t->set_c_func (0.0);
+ assert (prev_t);
+ prev_t->set_c (0.0);
}
/* tempos must be positioned correctly.
TempoSection* t;
if ((*ii)->is_tempo()) {
t = static_cast<TempoSection*> (*ii);
- if ((t->locked_to_meter() || !t->movable()) && t->frame() == meter->frame()) {
+ if (t->locked_to_meter() && t->frame() == meter->frame()) {
meter_locked_tempo = t;
break;
}
}
if (prev_m) {
- const double beats = (meter->bbt().bars - prev_m->bbt().bars) * prev_m->divisions_per_bar();
+ double beats = (meter->bbt().bars - prev_m->bbt().bars) * prev_m->divisions_per_bar();
if (beats + prev_m->beat() != meter->beat()) {
/* reordering caused a bbt change */
+
+ beats = meter->beat() - prev_m->beat();
b_bbt = make_pair (beats + prev_m->beat()
, BBT_Time ((beats / prev_m->divisions_per_bar()) + prev_m->bbt().bars, 1, 0));
pulse = prev_m->pulse() + (beats / prev_m->note_divisor());
- } else if (meter->movable()) {
+ } else if (!meter->initial()) {
b_bbt = make_pair (meter->beat(), meter->bbt());
pulse = prev_m->pulse() + (beats / prev_m->note_divisor());
}
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.
* This function uses both tempo and meter.
*/
double
-TempoMap::beat_at_frame (const framecnt_t& frame) const
+TempoMap::beat_at_frame (const framecnt_t frame) const
{
Glib::Threads::RWLock::ReaderLock lm (lock);
prev_m = m;
}
}
+ assert (prev_m);
TempoSection* t;
for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
if ((*i)->is_tempo()) {
t = static_cast<TempoSection*> (*i);
+
+ if (!t->active()) {
+ continue;
+ }
+
if (prev_t && ((t->pulse() - prev_m->pulse()) * prev_m->note_divisor()) + prev_m->beat() > beat) {
break;
}
}
}
+ assert (prev_t);
return prev_t->minute_at_pulse (((beat - prev_m->beat()) / prev_m->note_divisor()) + prev_m->pulse());
}
*
*/
Tempo
-TempoMap::tempo_at_frame (const framepos_t& frame) const
+TempoMap::tempo_at_frame (const framepos_t frame) const
{
Glib::Threads::RWLock::ReaderLock lm (lock);
}
if ((prev_t) && t->minute() > minute) {
/* t is the section past frame */
- const double ret_bpm = prev_t->tempo_at_minute (minute);
- const Tempo ret_tempo (ret_bpm, prev_t->note_type());
- return ret_tempo;
+ return prev_t->tempo_at_minute (minute);
}
prev_t = t;
}
}
- const double ret = prev_t->beats_per_minute();
- const Tempo ret_tempo (ret, prev_t->note_type ());
-
- return ret_tempo;
+ return Tempo (prev_t->note_types_per_minute(), prev_t->note_type(), prev_t->end_note_types_per_minute());
}
/** returns the frame at which the supplied tempo occurs, or
TempoMap::minute_at_tempo_locked (const Metrics& metrics, const Tempo& tempo) const
{
TempoSection* prev_t = 0;
- const double tempo_bpm = tempo.beats_per_minute();
+ const double tempo_bpm = tempo.note_types_per_minute();
Metrics::const_iterator i;
continue;
}
- const double t_bpm = t->beats_per_minute();
- if (t_bpm == tempo_bpm) {
+
+ if (t->note_types_per_minute() == tempo_bpm) {
return t->minute();
}
if (prev_t) {
- const double prev_t_bpm = prev_t->beats_per_minute();
+ 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)) {
- if ((t_bpm > tempo_bpm && prev_t_bpm < tempo_bpm) || (t_bpm < tempo_bpm && prev_t_bpm > tempo_bpm)) {
- return prev_t->minute_at_tempo (tempo_bpm, prev_t->pulse());
+ return prev_t->minute_at_ntpm (tempo_bpm, t->pulse());
}
}
prev_t = t;
}
if ((prev_t) && t->pulse() > pulse) {
/* t is the section past frame */
- const double ret_bpm = prev_t->tempo_at_pulse (pulse);
- const Tempo ret_tempo (ret_bpm, prev_t->note_type());
- return ret_tempo;
+ return prev_t->tempo_at_pulse (pulse);
}
prev_t = t;
}
}
- const double ret = prev_t->beats_per_minute();
- const Tempo ret_tempo (ret, prev_t->note_type ());
-
- return ret_tempo;
+ return Tempo (prev_t->note_types_per_minute(), prev_t->note_type(), prev_t->end_note_types_per_minute());
}
double
TempoMap::pulse_at_tempo_locked (const Metrics& metrics, const Tempo& tempo) const
{
TempoSection* prev_t = 0;
- const double tempo_bpm = tempo.beats_per_minute();
+ const double tempo_bpm = tempo.note_types_per_minute();
Metrics::const_iterator i;
continue;
}
- const double t_bpm = t->beats_per_minute();
+ 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->beats_per_minute();
+ 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_tempo (tempo_bpm, prev_t->minute());
+ return prev_t->pulse_at_ntpm (prev_t->note_types_per_minute(), prev_t->minute());
}
}
prev_t = t;
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- return pulse_at_tempo_locked (_metrics, tempo) * 4.0;;
+ return pulse_at_tempo_locked (_metrics, tempo) * 4.0;
}
/** Returns the whole-note pulse corresponding to the supplied BBT (meter-based) beat.
prev_m = m;
}
}
+ assert (prev_m);
double const ret = ((pulse - prev_m->pulse()) * prev_m->note_divisor()) + prev_m->beat();
return ret;
}
/* treated as constant for this ts */
- const double pulses_in_section = ((minute - prev_t->minute()) * prev_t->beats_per_minute()) / prev_t->note_type();
+ 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();
}
}
}
/* must be treated as constant, irrespective of _type */
- double const dtime = ((pulse - prev_t->pulse()) * prev_t->note_type()) / prev_t->beats_per_minute();
+ double const dtime = ((pulse - prev_t->pulse()) * prev_t->note_type()) / prev_t->note_types_per_minute();
return dtime + prev_t->minute();
}
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());
* while the input uses meter, the output does not.
*/
double
-TempoMap::quarter_note_at_bbt_rt (const Timecode::BBT_Time& bbt)
+TempoMap::quarter_note_at_bbt (const Timecode::BBT_Time& bbt)
{
Glib::Threads::RWLock::ReaderLock lm (lock);
+ return pulse_at_bbt_locked (_metrics, bbt) * 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 ret;
}
-/** 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.
+/** 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.
*
- * 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.
- */
+ * quarter-notes ignore meter and are based on pulse (the musical unit of MetricSection).
+ *
+ */
+Timecode::BBT_Time
+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
{
}
}
+ 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);
bbt.bars = 1;
bbt.beats = 1;
bbt.ticks = 0;
- warning << string_compose (_("tempo map asked for BBT time at frame %1\n"), frame) << endmsg;
+#ifndef NDEBUG
+ warning << string_compose (_("tempo map was asked for BBT time at frame %1\n"), frame) << endmsg;
+#endif
return bbt;
}
+
+ const double minute = minute_at_frame (frame);
+
Glib::Threads::RWLock::ReaderLock lm (lock);
- return bbt_at_minute_locked (_metrics, minute_at_frame (frame));
+ return bbt_at_minute_locked (_metrics, minute);
}
BBT_Time
TempoMap::bbt_at_frame_rt (framepos_t frame)
{
+ const double minute = minute_at_frame (frame);
+
Glib::Threads::RWLock::ReaderLock lm (lock, Glib::Threads::TRY_LOCK);
if (!lm.locked()) {
throw std::logic_error ("TempoMap::bbt_at_frame_rt() could not lock tempo map");
}
- return bbt_at_minute_locked (_metrics, minute_at_frame (frame));
+ return bbt_at_minute_locked (_metrics, minute);
}
Timecode::BBT_Time
TempoMap::frame_at_bbt (const BBT_Time& bbt)
{
if (bbt.bars < 1) {
+#ifndef NDEBUG
warning << string_compose (_("tempo map asked for frame time at bar < 1 (%1)\n"), bbt) << endmsg;
+#endif
return 0;
}
if (bbt.beats < 1) {
throw std::logic_error ("beats are counted from one");
}
- Glib::Threads::RWLock::ReaderLock lm (lock);
- return frame_at_minute (minute_at_bbt_locked (_metrics, bbt));
+ double minute;
+ {
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+ minute = minute_at_bbt_locked (_metrics, bbt);
+ }
+
+ return frame_at_minute (minute);
}
/* meter & tempo section based */
*
*/
double
-TempoMap::quarter_note_at_frame (const framepos_t frame)
+TempoMap::quarter_note_at_frame (const framepos_t frame) const
{
- Glib::Threads::RWLock::ReaderLock lm (lock);
+ const double minute = minute_at_frame (frame);
- const double ret = quarter_note_at_minute_locked (_metrics, minute_at_frame (frame));
+ Glib::Threads::RWLock::ReaderLock lm (lock);
- return ret;
+ return pulse_at_minute_locked (_metrics, minute) * 4.0;
}
double
-TempoMap::quarter_note_at_minute_locked (const Metrics& metrics, const double minute) const
+TempoMap::quarter_note_at_frame_rt (const framepos_t frame) const
{
- const double ret = pulse_at_minute_locked (metrics, minute) * 4.0;
-
- return ret;
-}
+ const double minute = minute_at_frame (frame);
-double
-TempoMap::quarter_note_at_frame_rt (const framepos_t frame)
-{
Glib::Threads::RWLock::ReaderLock lm (lock, Glib::Threads::TRY_LOCK);
if (!lm.locked()) {
throw std::logic_error ("TempoMap::quarter_note_at_frame_rt() could not lock tempo map");
}
- const double ret = pulse_at_minute_locked (_metrics, minute_at_frame (frame)) * 4.0;
-
- return ret;
+ return pulse_at_minute_locked (_metrics, minute) * 4.0;
}
/**
*
*/
framepos_t
-TempoMap::frame_at_quarter_note (const double quarter_note)
+TempoMap::frame_at_quarter_note (const double quarter_note) const
{
- Glib::Threads::RWLock::ReaderLock lm (lock);
-
- const framepos_t ret = frame_at_minute (minute_at_quarter_note_locked (_metrics, quarter_note));
-
- return ret;
-}
+ double minute;
+ {
+ Glib::Threads::RWLock::ReaderLock lm (lock);
-double
-TempoMap::minute_at_quarter_note_locked (const Metrics& metrics, const double quarter_note) const
-{
- const double ret = minute_at_pulse_locked (metrics, quarter_note / 4.0);
+ minute = minute_at_pulse_locked (_metrics, quarter_note / 4.0);
+ }
- return ret;
+ return frame_at_minute (minute);
}
/** Returns the quarter-note beats corresponding to the supplied BBT (meter-based) beat.
*
*/
double
-TempoMap::quarter_note_at_beat (const double beat)
+TempoMap::quarter_note_at_beat (const double beat) const
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- const double ret = quarter_note_at_beat_locked (_metrics, beat);
-
- return ret;
-}
-
-double
-TempoMap::quarter_note_at_beat_locked (const Metrics& metrics, const double beat) const
-{
- const double ret = pulse_at_beat_locked (metrics, beat) * 4.0;
-
- return ret;
+ return pulse_at_beat_locked (_metrics, beat) * 4.0;
}
/** Returns the BBT (meter-based) beat position corresponding to the supplied quarter-note beats.
*
*/
double
-TempoMap::beat_at_quarter_note (const double quarter_note)
+TempoMap::beat_at_quarter_note (const double quarter_note) const
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- const double ret = beat_at_quarter_note_locked (_metrics, quarter_note);
-
- return ret;
-}
-
-double
-TempoMap::beat_at_quarter_note_locked (const Metrics& metrics, const double quarter_note) const
-{
-
- return beat_at_pulse_locked (metrics, quarter_note / 4.0);
+ return beat_at_pulse_locked (_metrics, quarter_note / 4.0);
}
/** Returns the duration in frames between two supplied quarter-note beat positions.
*
*/
framecnt_t
-TempoMap::frames_between_quarter_notes (const double start, const double end)
+TempoMap::frames_between_quarter_notes (const double start, const double end) const
{
- Glib::Threads::RWLock::ReaderLock lm (lock);
+ double minutes;
+
+ {
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+ minutes = minutes_between_quarter_notes_locked (_metrics, start, end);
+ }
- return frame_at_minute (minutes_between_quarter_notes_locked (_metrics, start, end));
+ return frame_at_minute (minutes);
}
double
-TempoMap::minutes_between_quarter_notes_locked (const Metrics& metrics, const double start, const double end)
+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_frames (const framecnt_t start, const framecnt_t end) const
+{
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+
+ return quarter_notes_between_frames_locked (_metrics, start, end);
+}
+
+double
+TempoMap::quarter_notes_between_frames_locked (const Metrics& metrics, const framecnt_t start, const framecnt_t end) const
+{
+ const TempoSection* prev_t = 0;
+
+ for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
+ TempoSection* t;
+
+ if ((*i)->is_tempo()) {
+ t = static_cast<TempoSection*> (*i);
+ if (!t->active()) {
+ continue;
+ }
+ if (prev_t && t->frame() > start) {
+ break;
+ }
+ prev_t = t;
+ }
+ }
+ assert (prev_t);
+ const double start_qn = prev_t->pulse_at_frame (start);
+
+ for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
+ TempoSection* t;
+
+ if ((*i)->is_tempo()) {
+ t = static_cast<TempoSection*> (*i);
+ if (!t->active()) {
+ continue;
+ }
+ if (prev_t && t->frame() > end) {
+ break;
+ }
+ prev_t = t;
+ }
+ }
+ const double end_qn = prev_t->pulse_at_frame (end);
+
+ return (end_qn - start_qn) * 4.0;
+}
+
bool
TempoMap::check_solved (const Metrics& metrics) const
{
}
/* precision check ensures tempo and frames align.*/
- if (t->frame() != frame_at_minute (prev_t->minute_at_tempo (t->beats_per_minute(), t->pulse()))) {
+ if (t->frame() != frame_at_minute (prev_t->minute_at_ntpm (prev_t->end_note_types_per_minute(), t->pulse()))) {
if (!t->locked_to_meter()) {
return false;
}
/* gradient limit - who knows what it should be?
things are also ok (if a little chaotic) without this
*/
- if (fabs (prev_t->c_func()) > 1000.0) {
- //std::cout << "c : " << prev_t->c_func() << std::endl;
+ if (fabs (prev_t->c()) > 1000.0) {
+ //std::cout << "c : " << prev_t->c() << std::endl;
return false;
}
}
m = static_cast<MeterSection*> (*i);
if (prev_m && m->position_lock_style() == AudioTime) {
const TempoSection* t = &tempo_section_at_minute_locked (metrics, minute_at_frame (m->frame() - 1));
- const double nascent_m_minute = t->minute_at_pulse (m->pulse());
+ const framepos_t nascent_m_frame = frame_at_minute (t->minute_at_pulse (m->pulse()));
/* Here we check that a preceding section of music doesn't overlap a subsequent one.
*/
- if (t && (nascent_m_minute > m->minute() || nascent_m_minute < 0.0)) {
+ if (t && (nascent_m_frame > m->frame() || nascent_m_frame < 0)) {
return false;
}
}
}
bool
-TempoMap::set_active_tempos (const Metrics& metrics, const framepos_t& frame)
+TempoMap::set_active_tempi (const Metrics& metrics, const framepos_t frame)
{
for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
TempoSection* t;
if ((*i)->is_tempo()) {
t = static_cast<TempoSection*> (*i);
- if (!t->movable()) {
- 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 (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->frame() < frame) {
+ t->set_active (false);
+ t->set_pulse (-1.0);
+ } else if (t->frame() > frame) {
+ t->set_active (true);
+ } else if (t->frame() == frame) {
+ return false;
+ }
}
}
}
TempoSection* prev_t = 0;
TempoSection* section_prev = 0;
double first_m_minute = 0.0;
+ const bool sml = section->locked_to_meter();
/* can't move a tempo before the first meter */
for (Metrics::iterator i = imaginary.begin(); i != imaginary.end(); ++i) {
MeterSection* m;
if (!(*i)->is_tempo()) {
m = static_cast<MeterSection*> (*i);
- if (!m->movable()) {
+ if (m->initial()) {
first_m_minute = m->minute();
break;
}
}
}
- if (section->movable() && minute <= first_m_minute) {
+ if (!section->initial() && minute <= first_m_minute) {
return false;
}
if (!t->active()) {
continue;
}
+
if (prev_t) {
+
if (t == section) {
+ continue;
+ }
+
+ if (t->frame() == frame_at_minute (minute)) {
+ return false;
+ }
+
+ const bool tlm = t->position_lock_style() == MusicTime;
+
+ if (prev_t && !section_prev && ((sml && tlm && t->pulse() > section->pulse()) || (!tlm && t->minute() > minute))) {
section_prev = prev_t;
- if (t->locked_to_meter()) {
- prev_t = t;
+
+ section_prev->set_c (section_prev->compute_c_minute (section_prev->end_note_types_per_minute(), minute));
+ if (!section->locked_to_meter()) {
+ section->set_pulse (section_prev->pulse_at_ntpm (section_prev->end_note_types_per_minute(), minute));
}
- continue;
+ prev_t = section;
}
+
if (t->position_lock_style() == MusicTime) {
- prev_t->set_c_func (prev_t->compute_c_func_pulse (t->beats_per_minute(), t->pulse()));
- t->set_minute (prev_t->minute_at_tempo (t->beats_per_minute(), t->pulse()));
+ 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_minute (t->beats_per_minute(), t->minute()));
+ 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->beats_per_minute(), t->minute()));
+ 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_minute (section->beats_per_minute(), minute));
- if (!section->locked_to_meter()) {
- section->set_pulse (section_prev->pulse_at_tempo (section->beats_per_minute(), minute));
- }
- }
-
-#if (0)
- recompute_tempi (imaginary);
-
- if (check_solved (imaginary)) {
- return true;
- } else {
- dunp (imaginary, std::cout);
- }
-#endif
-
MetricSectionFrameSorter fcmp;
imaginary.sort (fcmp);
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->beats_per_minute(), t->pulse()));
- t->set_minute (prev_t->minute_at_tempo (t->beats_per_minute(), t->pulse()));
+ 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_minute (t->beats_per_minute(), t->minute()));
+ 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->beats_per_minute(), t->minute()));
+ t->set_pulse (prev_t->pulse_at_ntpm (prev_t->end_note_types_per_minute(), t->minute()));
}
}
}
}
if (section_prev) {
- section_prev->set_c_func (section_prev->compute_c_func_pulse (section->beats_per_minute(), pulse));
- section->set_minute (section_prev->minute_at_tempo (section->beats_per_minute(), pulse));
- }
-
-#if (0)
- recompute_tempi (imaginary);
-
- if (check_solved (imaginary)) {
- return true;
- } else {
- dunp (imaginary, std::cout);
+ 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));
}
-#endif
MetricSectionSorter cmp;
imaginary.sort (cmp);
bool
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 */
+ /* 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->movable() && other->movable()) || (!other->movable() && section->movable() && other->minute() >= 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, section->frame_at_minute (minute))) {
+ if (!set_active_tempi (imaginary, frame_at_minute (minute))) {
return false;
}
}
TempoSection* t;
if ((*ii)->is_tempo()) {
t = static_cast<TempoSection*> (*ii);
- if ((t->locked_to_meter() || !t->movable()) && t->minute() == section->minute()) {
+ if (t->locked_to_meter() && t->frame() == section->frame()) {
meter_locked_tempo = t;
break;
}
if (!(*i)->is_tempo()) {
m = static_cast<MeterSection*> (*i);
if (m == section){
- if (prev_m && section->movable()) {
+ if (prev_m && !section->initial()) {
const double beats = (pulse_at_minute_locked (imaginary, minute) - prev_m->pulse()) * prev_m->note_divisor();
if (beats + prev_m->beat() < section->beat()) {
/* set the section pulse according to its musical position,
}
} else {
/* all is ok. set section's locked tempo if allowed.
- possibly disallowed if there is an adjacent audio-locked tempo.
+ possibly disallow if there is an adjacent audio-locked tempo.
XX this check could possibly go. its never actually happened here.
*/
MeterSection* meter_copy = const_cast<MeterSection*>
}
}
} else {
- /* not movable (first meter atm) */
+ /* initial (first meter atm) */
tempo_copy->set_minute (minute);
tempo_copy->set_pulse (0.0);
MeterSection* m;
if (!(*i)->is_tempo()) {
m = static_cast<MeterSection*> (*i);
+
+ if (m == section) {
+ continue;
+ }
+
pair<double, BBT_Time> b_bbt;
double new_pulse = 0.0;
if (prev_m && m->bbt().bars > when.bars && !section_prev){
section_prev = prev_m;
+
const double beats = (when.bars - section_prev->bbt().bars) * section_prev->divisions_per_bar();
const double pulse = (beats / section_prev->note_divisor()) + section_prev->pulse();
pair<double, BBT_Time> b_bbt = make_pair (beats + section_prev->beat(), when);
section->set_pulse (pulse);
section->set_minute (minute_at_pulse_locked (imaginary, pulse));
prev_m = section;
- continue;
}
if (m->position_lock_style() == AudioTime) {
TempoSection* t;
if ((*ii)->is_tempo()) {
t = static_cast<TempoSection*> (*ii);
- if ((t->locked_to_meter() || !t->movable()) && t->frame() == m->frame()) {
+ if (t->locked_to_meter() && t->frame() == m->frame()) {
meter_locked_tempo = t;
break;
}
}
if (prev_m) {
- const double beats = ((m->bbt().bars - prev_m->bbt().bars) * prev_m->divisions_per_bar());
+ double beats = ((m->bbt().bars - prev_m->bbt().bars) * prev_m->divisions_per_bar());
if (beats + prev_m->beat() != m->beat()) {
/* tempo/ meter change caused a change in beat (bar). */
+
+ /* the user has requested that the previous section of music overlaps this one.
+ we have no choice but to change the bar number here, as being locked to audio means
+ we must stay where we are on the timeline.
+ */
+ beats = m->beat() - prev_m->beat();
b_bbt = make_pair (beats + prev_m->beat()
, BBT_Time ((beats / prev_m->divisions_per_bar()) + prev_m->bbt().bars, 1, 0));
new_pulse = prev_m->pulse() + (beats / prev_m->note_divisor());
- } else if (m->movable()) {
+
+ } else if (!m->initial()) {
b_bbt = make_pair (m->beat(), m->bbt());
new_pulse = prev_m->pulse() + (beats / prev_m->note_divisor());
}
* 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 ((*i)->is_tempo()) {
- t = static_cast<TempoSection*> (*i);
+ 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 (!(*i)->is_tempo()) {
- m = static_cast<MeterSection *> (*i);
+ } 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 ((*i)->is_tempo()) {
- t = static_cast<TempoSection*> (*i);
+ TempoSection const * const t = dynamic_cast<TempoSection const * const> (*i);
TempoSection* cp = new TempoSection (*t);
copy.push_back (cp);
- }
-
- if (!(*i)->is_tempo()) {
- m = static_cast<MeterSection *> (*i);
+ } else {
+ MeterSection const * const m = dynamic_cast<MeterSection const * const> (*i);
if (m == section) {
ret = new MeterSection (*m);
copy.push_back (ret);
const double beat = beat_at_bbt_locked (future_map, bbt);
+ if (section->position_lock_style() == AudioTime) {
+ tempo_copy->set_position_lock_style (MusicTime);
+ }
+
if (solve_map_pulse (future_map, tempo_copy, pulse_at_beat_locked (future_map, beat))) {
ret.first = tempo_copy->pulse();
ret.second = tempo_copy->frame();
* if sub_num is zero, the musical position will be taken from the supplied frame.
*/
void
-TempoMap::gui_move_tempo (TempoSection* ts, const framepos_t& frame, const int& sub_num)
+TempoMap::gui_set_tempo_position (TempoSection* ts, const framepos_t frame, const int& sub_num)
{
Metrics future_map;
Glib::Threads::RWLock::WriterLock lm (lock);
TempoSection* tempo_copy = copy_metrics_and_point (_metrics, future_map, ts);
- if (solve_map_minute (future_map, tempo_copy, minute_at_frame (frame))) {
- if (sub_num != 0) {
- /* We're moving the object that defines the grid while snapping to it...
- * Placing the ts at the beat corresponding to the requested frame may shift the
- * grid in such a way that the mouse is left hovering over a completerly different division,
- * causing jittering when the mouse next moves (esp. large tempo deltas).
- * To avoid this, place the ts at the requested frame in a dummy map
- * then find the closest beat subdivision to that frame in the dummy.
- * This alters the snap behaviour slightly in that we snap to beat divisions
- * in the future map rather than the existing one.
- */
- const double beat = exact_beat_at_frame_locked (future_map, frame, sub_num);
- const double pulse = pulse_at_beat_locked (future_map, beat);
-
- if (solve_map_pulse (future_map, tempo_copy, pulse)) {
- /* snapping to a grid. force MusicTime temporarily. */
- ts->set_position_lock_style (MusicTime);
- solve_map_pulse (_metrics, ts, pulse);
- ts->set_position_lock_style (AudioTime);
- recompute_meters (_metrics);
- }
- } else {
+ if (sub_num != 0) {
+ /* We're moving the object that defines the grid while snapping to it...
+ * Placing the ts at the beat corresponding to the requested frame may shift the
+ * grid in such a way that the mouse is left hovering over a completerly different division,
+ * causing jittering when the mouse next moves (esp. large tempo deltas).
+ * We fudge around this by doing this in the musical domain and then swapping back for the recompute.
+ */
+ const double qn = exact_qn_at_frame_locked (_metrics, frame, 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_frame (frame))) {
solve_map_minute (_metrics, ts, minute_at_frame (frame));
recompute_meters (_metrics);
}
++d;
}
- MetricPositionChanged (); // Emit Signal
+ MetricPositionChanged (PropertyChange ()); // Emit Signal
}
/** moves a MeterSection to a specified position.
* leaving the meter position unchanged.
*/
void
-TempoMap::gui_move_meter (MeterSection* ms, const framepos_t& frame)
+TempoMap::gui_set_meter_position (MeterSection* ms, const framepos_t frame)
{
Metrics future_map;
++d;
}
- MetricPositionChanged (); // Emit Signal
+ MetricPositionChanged (PropertyChange ()); // Emit Signal
}
bool
{
Glib::Threads::RWLock::WriterLock lm (lock);
TempoSection* tempo_copy = copy_metrics_and_point (_metrics, future_map, ts);
- tempo_copy->set_beats_per_minute (bpm.beats_per_minute());
+
+ if (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)) {
- ts->set_beats_per_minute (bpm.beats_per_minute());
+ 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;
}
++d;
}
if (can_solve) {
- MetricPositionChanged (); // Emit Signal
+ MetricPositionChanged (PropertyChange ()); // Emit Signal
}
+
return can_solve;
}
void
-TempoMap::gui_dilate_tempo (TempoSection* ts, const framepos_t& frame, const framepos_t& end_frame)
+TempoMap::gui_stretch_tempo (TempoSection* ts, const framepos_t frame, const framepos_t end_frame, const double start_qnote, const double end_qnote)
{
/*
Ts (future prev_t) Tnext
return;
}
- TempoSection* prev_t = copy_metrics_and_point (_metrics, future_map, ts);
- TempoSection* prev_to_prev_t = 0;
- const frameoffset_t fr_off = end_frame - frame;
+ TempoSection* ts_copy = copy_metrics_and_point (_metrics, future_map, ts);
- if (prev_t && prev_t->pulse() > 0.0) {
- prev_to_prev_t = const_cast<TempoSection*>(&tempo_section_at_minute_locked (future_map, minute_at_frame (prev_t->frame() - 1)));
+ if (!ts_copy) {
+ return;
}
- TempoSection* next_t = 0;
- for (Metrics::iterator i = future_map.begin(); i != future_map.end(); ++i) {
- TempoSection* t = 0;
- if ((*i)->is_tempo()) {
- t = static_cast<TempoSection*> (*i);
- if (t->frame() > ts->frame()) {
- next_t = t;
- break;
- }
- }
- }
/* minimum allowed measurement distance in frames */
- const framepos_t min_dframe = 2;
-
- /* the change in frames is the result of changing the slope of at most 2 previous tempo sections.
- constant to constant is straightforward, as the tempo prev to prev_t has constant slope.
- */
- double contribution = 0.0;
-
- if (next_t && prev_to_prev_t && prev_to_prev_t->type() == TempoSection::Ramp) {
- contribution = (prev_t->frame() - prev_to_prev_t->frame()) / (double) (next_t->frame() - prev_to_prev_t->frame());
- }
-
- const frameoffset_t prev_t_frame_contribution = fr_off - (contribution * (double) fr_off);
-
- const double start_pulse = prev_t->pulse_at_minute (minute_at_frame (frame));
- const double end_pulse = prev_t->pulse_at_minute (minute_at_frame (end_frame));
+ framepos_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 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 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());
+ }
+ framepos_t const fr_off = end_frame - frame;
+ frameoffset_t const ts_copy_frame_contribution = fr_off - (contribution * (double) fr_off);
- if (prev_t->type() == TempoSection::Constant || prev_t->c_func() == 0.0) {
-
- if (prev_t->position_lock_style() == MusicTime) {
- if (prev_to_prev_t && prev_to_prev_t->type() == TempoSection::Ramp) {
- if (frame > prev_to_prev_t->frame() + min_dframe && (frame + prev_t_frame_contribution) > prev_to_prev_t->frame() + min_dframe) {
-
- new_bpm = prev_t->beats_per_minute() * ((frame - prev_to_prev_t->frame())
- / (double) ((frame + prev_t_frame_contribution) - prev_to_prev_t->frame()));
- } else {
- new_bpm = prev_t->beats_per_minute();
- }
- } else {
- /* prev to prev is irrelevant */
-
- if (start_pulse > prev_t->pulse() && end_pulse > prev_t->pulse()) {
- new_bpm = prev_t->beats_per_minute() * ((start_pulse - prev_t->pulse()) / (end_pulse - prev_t->pulse()));
- } else {
- new_bpm = prev_t->beats_per_minute();
- }
- }
+ if (frame > prev_to_ts_copy->frame() + min_dframe && (frame + ts_copy_frame_contribution) > prev_to_ts_copy->frame() + 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 {
- /* AudioTime */
- if (prev_to_prev_t && prev_to_prev_t->type() == TempoSection::Ramp) {
- if (frame > prev_to_prev_t->frame() + min_dframe && end_frame > prev_to_prev_t->frame() + min_dframe) {
-
- new_bpm = prev_t->beats_per_minute() * ((frame - prev_to_prev_t->frame())
- / (double) ((end_frame) - prev_to_prev_t->frame()));
- } else {
- new_bpm = prev_t->beats_per_minute();
- }
- } else {
- /* prev_to_prev_t is irrelevant */
-
- if (frame > prev_t->frame() + min_dframe && end_frame > prev_t->frame() + min_dframe) {
- new_bpm = prev_t->beats_per_minute() * ((frame - prev_t->frame()) / (double) (end_frame - prev_t->frame()));
- } else {
- new_bpm = prev_t->beats_per_minute();
- }
- }
+ new_bpm = ts_copy->note_types_per_minute();
}
} else {
+ if (frame > ts_copy->frame() + min_dframe && end_frame > ts_copy->frame() + min_dframe) {
- double frame_ratio = 1.0;
- double pulse_ratio = 1.0;
- const double pulse_pos = frame;
-
- if (prev_to_prev_t) {
- if (pulse_pos > prev_to_prev_t->frame() + min_dframe && (pulse_pos - fr_off) > prev_to_prev_t->frame() + min_dframe) {
- frame_ratio = (((pulse_pos - fr_off) - prev_to_prev_t->frame()) / (double) ((pulse_pos) - prev_to_prev_t->frame()));
- }
- if (end_pulse > prev_to_prev_t->pulse() && start_pulse > prev_to_prev_t->pulse()) {
- pulse_ratio = ((start_pulse - prev_to_prev_t->pulse()) / (end_pulse - prev_to_prev_t->pulse()));
- }
+ new_bpm = ts_copy->note_types_per_minute() * ((frame - ts_copy->frame())
+ / (double) (end_frame - ts_copy->frame()));
} else {
- if (pulse_pos > prev_t->frame() + min_dframe && (pulse_pos - fr_off) > prev_t->frame() + min_dframe) {
- frame_ratio = (((pulse_pos - fr_off) - prev_t->frame()) / (double) ((pulse_pos) - prev_t->frame()));
- }
- pulse_ratio = (start_pulse / end_pulse);
+ new_bpm = ts_copy->note_types_per_minute();
}
- new_bpm = prev_t->beats_per_minute() * (pulse_ratio * frame_ratio);
- }
+ new_bpm = min (new_bpm, (double) 1000.0);
+ }
/* don't clamp and proceed here.
testing has revealed that this can go negative,
which is an entirely different thing to just being too low.
*/
+
if (new_bpm < 0.5) {
- return;
+ goto out;
}
- new_bpm = min (new_bpm, (double) 1000.0);
- prev_t->set_beats_per_minute (new_bpm);
+
+ 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_beats_per_minute (new_bpm);
+ 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
-}
-/** Returns the exact bbt-based beat corresponding to the bar, beat or quarter note subdivision nearest to
+}
+void
+TempoMap::gui_stretch_tempo_end (TempoSection* ts, const framepos_t frame, const framepos_t end_frame)
+{
+ /*
+ Ts (future prev_t) Tnext
+ | |
+ | [drag^] |
+ |----------|----------
+ e_f qn_beats(frame)
+ */
+
+ Metrics future_map;
+
+ {
+ Glib::Threads::RWLock::WriterLock lm (lock);
+
+ if (!ts) {
+ return;
+ }
+
+ TempoSection* prev_t = copy_metrics_and_point (_metrics, future_map, ts);
+
+ if (!prev_t) {
+ return;
+ }
+
+ /* minimum allowed measurement distance in frames */
+ framepos_t const min_dframe = 2;
+ double new_bpm;
+
+ if (frame > prev_t->frame() + min_dframe && end_frame > prev_t->frame() + min_dframe) {
+ new_bpm = prev_t->end_note_types_per_minute() * ((prev_t->frame() - frame)
+ / (double) (prev_t->frame() - end_frame));
+ } 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());
+ }
+ }
+
+ recompute_tempi (future_map);
+ recompute_meters (future_map);
+
+ if (check_solved (future_map)) {
+ ts->set_end_note_types_per_minute (new_bpm);
+
+ 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 (PropertyChange ()); // Emit Signal
+}
+
+bool
+TempoMap::gui_twist_tempi (TempoSection* ts, const Tempo& bpm, const framepos_t frame, const framepos_t end_frame)
+{
+ TempoSection* next_t = 0;
+ TempoSection* next_to_next_t = 0;
+ Metrics future_map;
+ bool can_solve = false;
+
+ /* minimum allowed measurement distance in frames */
+ framepos_t const min_dframe = 2;
+
+ {
+ Glib::Threads::RWLock::WriterLock lm (lock);
+ if (!ts) {
+ return false;
+ }
+
+ TempoSection* tempo_copy = copy_metrics_and_point (_metrics, future_map, ts);
+ TempoSection* prev_to_prev_t = 0;
+ const frameoffset_t fr_off = end_frame - frame;
+
+ if (!tempo_copy) {
+ return false;
+ }
+
+ if (tempo_copy->pulse() > 0.0) {
+ prev_to_prev_t = const_cast<TempoSection*>(&tempo_section_at_minute_locked (future_map, minute_at_frame (tempo_copy->frame() - 1)));
+ }
+
+ for (Metrics::const_iterator i = future_map.begin(); i != future_map.end(); ++i) {
+ if ((*i)->is_tempo() && (*i)->minute() > tempo_copy->minute()) {
+ next_t = static_cast<TempoSection*> (*i);
+ break;
+ }
+ }
+
+ if (!next_t) {
+ return false;
+ }
+
+ for (Metrics::const_iterator i = future_map.begin(); i != future_map.end(); ++i) {
+ if ((*i)->is_tempo() && (*i)->minute() > next_t->minute()) {
+ next_to_next_t = static_cast<TempoSection*> (*i);
+ break;
+ }
+ }
+
+ if (!next_to_next_t) {
+ return false;
+ }
+
+ double prev_contribution = 0.0;
+
+ if (next_t && prev_to_prev_t && prev_to_prev_t->type() == TempoSection::Ramp) {
+ prev_contribution = (tempo_copy->frame() - prev_to_prev_t->frame()) / (double) (next_t->frame() - prev_to_prev_t->frame());
+ }
+
+ const frameoffset_t tempo_copy_frame_contribution = fr_off - (prev_contribution * (double) fr_off);
+
+
+ framepos_t old_tc_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 (frame > tempo_copy->frame() + min_dframe && (frame + tempo_copy_frame_contribution) > tempo_copy->frame() + min_dframe) {
+ new_bpm = tempo_copy->note_types_per_minute() * ((frame - tempo_copy->frame())
+ / (double) (end_frame - tempo_copy->frame()));
+ } else {
+ new_bpm = tempo_copy->note_types_per_minute();
+ }
+
+ /* don't clamp and proceed here.
+ testing has revealed that this can go negative,
+ which is an entirely different thing to just being too low.
+ */
+ if (new_bpm < 0.5) {
+ return false;
+ }
+
+ new_bpm = min (new_bpm, (double) 1000.0);
+
+ tempo_copy->set_note_types_per_minute (new_bpm);
+ if (tempo_copy->type() == TempoSection::Constant) {
+ tempo_copy->set_end_note_types_per_minute (new_bpm);
+ }
+
+ recompute_tempi (future_map);
+
+ if (check_solved (future_map)) {
+
+ if (!next_t) {
+ return false;
+ }
+
+ ts->set_note_types_per_minute (new_bpm);
+ if (ts->type() == TempoSection::Constant) {
+ ts->set_end_note_types_per_minute (new_bpm);
+ }
+
+ recompute_map (_metrics);
+
+ can_solve = true;
+ }
+
+ if (next_t->type() == TempoSection::Constant || next_t->c() == 0.0) {
+ if (frame > tempo_copy->frame() + min_dframe && end_frame > tempo_copy->frame() + min_dframe) {
+
+ new_next_bpm = next_t->note_types_per_minute() * ((next_to_next_t->minute() - old_next_minute)
+ / (double) ((old_next_to_next_minute) - old_next_minute));
+
+ } else {
+ new_next_bpm = next_t->note_types_per_minute();
+ }
+
+ next_t->set_note_types_per_minute (new_next_bpm);
+ recompute_tempi (future_map);
+
+ if (check_solved (future_map)) {
+ for (Metrics::const_iterator i = _metrics.begin(); i != _metrics.end(); ++i) {
+ if ((*i)->is_tempo() && (*i)->minute() > ts->minute()) {
+ next_t = static_cast<TempoSection*> (*i);
+ break;
+ }
+ }
+
+ if (!next_t) {
+ return false;
+ }
+ next_t->set_note_types_per_minute (new_next_bpm);
+ recompute_map (_metrics);
+ can_solve = true;
+ }
+ } else {
+ double next_frame_ratio = 1.0;
+ double copy_frame_ratio = 1.0;
+
+ if (next_to_next_t) {
+ next_frame_ratio = (next_to_next_t->minute() - old_next_minute) / (old_next_to_next_minute - old_next_minute);
+
+ copy_frame_ratio = ((old_tc_minute - next_t->minute()) / (double) (old_tc_minute - old_next_minute));
+ }
+
+ new_next_bpm = next_t->note_types_per_minute() * next_frame_ratio;
+ new_copy_end_bpm = tempo_copy->end_note_types_per_minute() * copy_frame_ratio;
+
+ 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 {
+ 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;
+ }
+
+ 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);
+ }
+
+ ts->set_end_note_types_per_minute (new_copy_end_bpm);
+ recompute_map (_metrics);
+ can_solve = true;
+ }
+ }
+ }
+
+ Metrics::const_iterator d = future_map.begin();
+ while (d != future_map.end()) {
+ delete (*d);
+ ++d;
+ }
+
+ MetricPositionChanged (PropertyChange ()); // Emit Signal
+
+ return can_solve;
+}
+
+/** Returns the frame position of the musical position zero */
+framepos_t
+TempoMap::music_origin ()
+{
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+
+ return first_tempo().frame();
+}
+
+/** Returns the exact bbt-based beat corresponding to the bar, beat or quarter note subdivision nearest to
* the supplied frame, possibly returning a negative value.
+ *
* @param frame The session frame position.
* @param sub_num The subdivision to use when rounding the beat.
* A value of -1 indicates rounding to BBT bar. 1 indicates rounding to BBT beats.
* 0 indicates that the returned beat should not be rounded (equivalent to quarter_note_at_frame()).
* @return The beat position of the supplied frame.
*
+ * when working to a musical grid, the use of sub_nom indicates that
+ * the position should be interpreted musically.
+ *
+ * it effectively snaps to meter bars, meter beats or quarter note divisions
+ * (as per current gui convention) and returns a musical position independent of frame rate.
+ *
* If the supplied frame lies before the first meter, the return will be negative,
* in which case the returned beat uses the first meter (for BBT subdivisions) and
* the continuation of the tempo curve (backwards).
*
- * This function uses both tempo and meter.
+ * This function is sensitive to tempo and meter.
*/
double
-TempoMap::exact_beat_at_frame (const framepos_t& frame, const int32_t sub_num)
+TempoMap::exact_beat_at_frame (const framepos_t frame, const int32_t sub_num) const
{
Glib::Threads::RWLock::ReaderLock lm (lock);
}
double
-TempoMap::exact_beat_at_frame_locked (const Metrics& metrics, const framepos_t& frame, const int32_t divisions)
+TempoMap::exact_beat_at_frame_locked (const Metrics& metrics, const framepos_t frame, const int32_t divisions) const
{
return beat_at_pulse_locked (_metrics, exact_qn_at_frame_locked (metrics, frame, divisions) / 4.0);
}
/** Returns the exact quarter note corresponding to the bar, beat or quarter note subdivision nearest to
* the supplied frame, possibly returning a negative value.
- * Supplying a frame position with a non-zero sub_num is equivalent to supplying
- * a quarter-note musical position without frame rounding (see below)
*
* @param frame The session frame position.
* @param sub_num The subdivision to use when rounding the quarter note.
* 0 indicates that the returned quarter note should not be rounded (equivalent to quarter_note_at_frame()).
* @return The quarter note position of the supplied frame.
*
+ * When working to a musical grid, the use of sub_nom indicates that
+ * the frame position should be interpreted musically.
+ *
+ * it effectively snaps to meter bars, meter beats or quarter note divisions
+ * (as per current gui convention) and returns a musical position independent of frame rate.
+ *
* If the supplied frame lies before the first meter, the return will be negative,
* in which case the returned quarter note uses the first meter (for BBT subdivisions) and
* the continuation of the tempo curve (backwards).
*
- * This function uses both tempo and meter.
+ * This function is tempo-sensitive.
*/
double
-TempoMap::exact_qn_at_frame (const framepos_t& frame, const int32_t sub_num)
+TempoMap::exact_qn_at_frame (const framepos_t frame, const int32_t sub_num) const
{
Glib::Threads::RWLock::ReaderLock lm (lock);
}
double
-TempoMap::exact_qn_at_frame_locked (const Metrics& metrics, const framepos_t& frame, const int32_t sub_num)
+TempoMap::exact_qn_at_frame_locked (const Metrics& metrics, const framepos_t frame, const int32_t sub_num) const
{
- double qn = quarter_note_at_minute_locked (metrics, minute_at_frame (frame));
+ double qn = pulse_at_minute_locked (metrics, minute_at_frame (frame)) * 4.0;
if (sub_num > 1) {
qn = floor (qn) + (floor (((qn - floor (qn)) * (double) sub_num) + 0.5) / sub_num);
} else if (sub_num == 1) {
/* the gui requested exact musical (BBT) beat */
- qn = quarter_note_at_beat_locked (metrics, floor (beat_at_minute_locked (metrics, minute_at_frame (frame)) + 0.5));
+ qn = pulse_at_beat_locked (metrics, (floor (beat_at_minute_locked (metrics, minute_at_frame (frame)) + 0.5))) * 4.0;
} else if (sub_num == -1) {
/* snap to bar */
Timecode::BBT_Time bbt = bbt_at_pulse_locked (metrics, qn / 4.0);
Glib::Threads::RWLock::ReaderLock lm (lock);
BBT_Time pos_bbt = bbt_at_minute_locked (_metrics, minute_at_frame (pos));
- const framecnt_t offset = frame_at_minute (minute_at_bbt_locked (_metrics, pos_bbt));
+
const double divisions = meter_section_at_minute_locked (_metrics, minute_at_frame (pos)).divisions_per_bar();
if (dir > 0) {
pos_bbt.bars += 1;
pos_bbt.beats -= divisions;
}
+ const framecnt_t pos_bbt_frame = frame_at_minute (minute_at_bbt_locked (_metrics, pos_bbt));
+
+ return pos_bbt_frame - pos;
- return frame_at_minute (minute_at_bbt_locked (_metrics, pos_bbt)) - offset;
} else {
- pos_bbt.bars -= bbt.bars;
+
+ 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.beats == 1) {
- pos_bbt.bars--;
- pos_bbt.beats = divisions;
+ 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--;
+ pos_bbt.beats = 1;
+ pos_bbt.ticks = 0;
}
- pos_bbt.ticks = BBT_Time::ticks_per_beat - (bbt.ticks - pos_bbt.ticks);
} else {
pos_bbt.ticks -= bbt.ticks;
}
if (pos_bbt.beats <= bbt.beats) {
- pos_bbt.bars--;
- pos_bbt.beats = divisions - (bbt.beats - pos_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 offset - frame_at_minute (minute_at_bbt_locked (_metrics, pos_bbt));
+ return pos - frame_at_minute (minute_at_bbt_locked (_metrics, pos_bbt));
}
return 0;
}
-framepos_t
+MusicFrame
TempoMap::round_to_bar (framepos_t fr, RoundMode dir)
{
return round_to_type (fr, dir, Bar);
}
-framepos_t
+MusicFrame
TempoMap::round_to_beat (framepos_t fr, RoundMode dir)
{
return round_to_type (fr, dir, Beat);
}
-framepos_t
-TempoMap::round_to_beat_subdivision (framepos_t fr, int sub_num, RoundMode dir)
-{
- Glib::Threads::RWLock::ReaderLock lm (lock);
- uint32_t ticks = (uint32_t) floor (max (0.0, beat_at_minute_locked (_metrics, minute_at_frame (fr))) * BBT_Time::ticks_per_beat);
- uint32_t beats = (uint32_t) floor (ticks / BBT_Time::ticks_per_beat);
- uint32_t ticks_one_subdivisions_worth = (uint32_t) BBT_Time::ticks_per_beat / sub_num;
-
- ticks -= beats * BBT_Time::ticks_per_beat;
-
- if (dir > 0) {
- /* round to next (or same iff dir == RoundUpMaybe) */
-
- uint32_t mod = 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 */
- ticks += ticks_one_subdivisions_worth;
-
- } else {
- /* not on subdivision, compute distance to next subdivision */
-
- ticks += ticks_one_subdivisions_worth - mod;
- }
-
- 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) */
-
- uint32_t difference = 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 (ticks < difference) {
- ticks = BBT_Time::ticks_per_beat - ticks;
- } else {
- ticks -= difference;
- }
-
- } else {
- /* round to nearest */
- double rem;
-
- /* compute the distance to the previous and next subdivision */
-
- if ((rem = fmod ((double) ticks, (double) ticks_one_subdivisions_worth)) > ticks_one_subdivisions_worth/2.0) {
-
- /* closer to the next subdivision, so shift forward */
-
- ticks = lrint (ticks + (ticks_one_subdivisions_worth - rem));
-
- DEBUG_TRACE (DEBUG::SnapBBT, string_compose ("moved forward to %1\n", ticks));
-
- if (ticks > BBT_Time::ticks_per_beat) {
- ++beats;
- ticks -= BBT_Time::ticks_per_beat;
- DEBUG_TRACE (DEBUG::SnapBBT, string_compose ("fold beat to %1\n", beats));
- }
-
- } else if (rem > 0) {
-
- /* closer to previous subdivision, so shift backward */
-
- if (rem > ticks) {
- if (beats == 0) {
- /* can't go backwards past zero, so ... */
- return 0;
- }
- /* step back to previous beat */
- --beats;
- ticks = lrint (BBT_Time::ticks_per_beat - rem);
- DEBUG_TRACE (DEBUG::SnapBBT, string_compose ("step back beat to %1\n", beats));
- } else {
- ticks = lrint (ticks - rem);
- DEBUG_TRACE (DEBUG::SnapBBT, string_compose ("moved backward to %1\n", ticks));
- }
- } else {
- /* on the subdivision, do nothing */
- }
- }
-
- const framepos_t ret_frame = frame_at_minute (minute_at_beat_locked (_metrics, beats + (ticks / BBT_Time::ticks_per_beat)));
-
- return ret_frame;
-}
-
-framepos_t
+MusicFrame
TempoMap::round_to_quarter_note_subdivision (framepos_t fr, int sub_num, RoundMode dir)
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- uint32_t ticks = (uint32_t) floor (max (0.0, quarter_note_at_minute_locked (_metrics, minute_at_frame (fr))) * BBT_Time::ticks_per_beat);
+ uint32_t ticks = (uint32_t) floor (max (0.0, pulse_at_minute_locked (_metrics, minute_at_frame (fr))) * BBT_Time::ticks_per_beat * 4.0);
uint32_t beats = (uint32_t) floor (ticks / BBT_Time::ticks_per_beat);
uint32_t ticks_one_subdivisions_worth = (uint32_t) BBT_Time::ticks_per_beat / sub_num;
ticks += ticks_one_subdivisions_worth - mod;
}
- if (ticks >= BBT_Time::ticks_per_beat) {
- ticks -= BBT_Time::ticks_per_beat;
- }
+//NOTE: this code intentionally limits the rounding so we don't advance to the next beat.
+// For the purposes of "jump-to-next-subdivision", we DO want to advance to the next beat.
+// And since the "prev" direction DOES move beats, I assume this code is unintended.
+// But I'm keeping it around, until we determine there are no terrible consequences.
+// if (ticks >= BBT_Time::ticks_per_beat) {
+// ticks -= BBT_Time::ticks_per_beat;
+// }
+
} else if (dir < 0) {
/* round to previous (or same iff dir == RoundDownMaybe) */
if (rem > ticks) {
if (beats == 0) {
/* can't go backwards past zero, so ... */
- return 0;
+ return MusicFrame (0, 0);
}
/* step back to previous beat */
--beats;
}
}
- const framepos_t ret_frame = frame_at_minute (minute_at_quarter_note_locked (_metrics, beats + (ticks / BBT_Time::ticks_per_beat)));
+ MusicFrame ret (0, 0);
+ ret.frame = frame_at_minute (minute_at_pulse_locked (_metrics, (beats + (ticks / BBT_Time::ticks_per_beat)) / 4.0));
+ ret.division = sub_num;
- return ret_frame;
+ return ret;
}
-framepos_t
+MusicFrame
TempoMap::round_to_type (framepos_t frame, RoundMode dir, BBTPointType type)
{
Glib::Threads::RWLock::ReaderLock lm (lock);
-
- const double beat_at_framepos = max (0.0, beat_at_minute_locked (_metrics, minute_at_frame (frame)));
+ const double minute = minute_at_frame (frame);
+ const double beat_at_framepos = max (0.0, beat_at_minute_locked (_metrics, minute));
BBT_Time bbt (bbt_at_beat_locked (_metrics, beat_at_framepos));
+ MusicFrame ret (0, 0);
switch (type) {
case Bar:
+ ret.division = -1;
+
if (dir < 0) {
/* find bar previous to 'frame' */
+ if (bbt.bars > 0)
+ --bbt.bars;
bbt.beats = 1;
bbt.ticks = 0;
- return frame_at_minute (minute_at_bbt_locked (_metrics, bbt));
+
+ ret.frame = frame_at_minute (minute_at_bbt_locked (_metrics, bbt));
+
+ return ret;
} else if (dir > 0) {
/* find bar following 'frame' */
++bbt.bars;
bbt.beats = 1;
bbt.ticks = 0;
- return frame_at_minute (minute_at_bbt_locked (_metrics, bbt));
+
+ ret.frame = frame_at_minute (minute_at_bbt_locked (_metrics, bbt));
+
+ return ret;
} else {
/* true rounding: find nearest bar */
framepos_t raw_ft = frame_at_minute (minute_at_bbt_locked (_metrics, bbt));
++bbt.bars;
framepos_t next_ft = frame_at_minute (minute_at_bbt_locked (_metrics, bbt));
- if ((raw_ft - prev_ft) > (next_ft - prev_ft) / 2) {
- return next_ft;
+ if ((raw_ft - prev_ft) > (next_ft - prev_ft) / 2) {
+ ret.frame = next_ft;
+
+ return ret;
} else {
- return prev_ft;
+ --bbt.bars;
+ ret.frame = prev_ft;
+
+ return ret;
}
}
break;
case Beat:
+ ret.division = 1;
+
if (dir < 0) {
- return frame_at_minute (minute_at_beat_locked (_metrics, floor (beat_at_framepos)));
+ ret.frame = frame_at_minute (minute_at_beat_locked (_metrics, floor (beat_at_framepos)));
+
+ return ret;
} else if (dir > 0) {
- return frame_at_minute (minute_at_beat_locked (_metrics, ceil (beat_at_framepos)));
+ ret.frame = frame_at_minute (minute_at_beat_locked (_metrics, ceil (beat_at_framepos)));
+
+ return ret;
} else {
- return frame_at_minute (minute_at_beat_locked (_metrics, floor (beat_at_framepos + 0.5)));
+ ret.frame = frame_at_minute (minute_at_beat_locked (_metrics, floor (beat_at_framepos + 0.5)));
+
+ return ret;
}
break;
}
- return 0;
+ return MusicFrame (0, 0);
}
void
if (bar_mod == 0) {
while (pos >= 0 && pos < upper) {
pos = frame_at_minute (minute_at_beat_locked (_metrics, cnt));
- const TempoSection tempo = tempo_section_at_minute_locked (_metrics, minute_at_frame (pos));
const MeterSection meter = meter_section_at_minute_locked (_metrics, minute_at_frame (pos));
const BBT_Time bbt = bbt_at_beat_locked (_metrics, cnt);
- points.push_back (BBTPoint (meter, tempo_at_minute_locked (_metrics, minute_at_frame (pos)), pos, bbt.bars, bbt.beats, tempo.c_func()));
+ const double qn = pulse_at_beat_locked (_metrics, cnt) * 4.0;
+
+ points.push_back (BBTPoint (meter, tempo_at_minute_locked (_metrics, minute_at_frame (pos)), pos, bbt.bars, bbt.beats, qn));
++cnt;
}
} else {
while (pos >= 0 && pos < upper) {
pos = frame_at_minute (minute_at_bbt_locked (_metrics, bbt));
- const TempoSection tempo = tempo_section_at_minute_locked (_metrics, minute_at_frame (pos));
const MeterSection meter = meter_section_at_minute_locked (_metrics, minute_at_frame (pos));
- points.push_back (BBTPoint (meter, tempo_at_minute_locked (_metrics, minute_at_frame (pos)), pos, bbt.bars, bbt.beats, tempo.c_func()));
+ const double qn = pulse_at_bbt_locked (_metrics, bbt) * 4.0;
+
+ points.push_back (BBTPoint (meter, tempo_at_minute_locked (_metrics, minute_at_frame (pos)), pos, bbt.bars, bbt.beats, qn));
bbt.bars += bar_mod;
}
}
return tempo_section_at_minute_locked (_metrics, minute_at_frame (frame));
}
+TempoSection&
+TempoMap::tempo_section_at_frame (framepos_t frame)
+{
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+
+ return tempo_section_at_minute_locked (_metrics, minute_at_frame (frame));
+}
+
const TempoSection&
TempoMap::tempo_section_at_minute_locked (const Metrics& metrics, double minute) const
{
return *prev;
}
+TempoSection&
+TempoMap::tempo_section_at_minute_locked (const Metrics& metrics, double minute)
+{
+ TempoSection* prev = 0;
+
+ TempoSection* t;
+ for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
+
+ if ((*i)->is_tempo()) {
+ t = static_cast<TempoSection*> (*i);
+ if (!t->active()) {
+ continue;
+ }
+ if (prev && t->minute() > minute) {
+ break;
+ }
+
+ prev = t;
+ }
+ }
+
+ if (prev == 0) {
+ fatal << endmsg;
+ abort(); /*NOTREACHED*/
+ }
+
+ return *prev;
+}
const TempoSection&
TempoMap::tempo_section_at_beat_locked (const Metrics& metrics, const double& beat) const
{
for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
if ((*i)->is_tempo()) {
t = static_cast<TempoSection*> (*i);
+
+ if (!t->active()) {
+ continue;
+ }
+
if (prev_t && ((t->pulse() - prev_m->pulse()) * prev_m->note_divisor()) + prev_m->beat() > beat) {
break;
}
return *prev_t;
}
+TempoSection*
+TempoMap::previous_tempo_section (TempoSection* ts) const
+{
+ 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) {
+
+ if ((*i)->is_tempo()) {
+ TempoSection* t = static_cast<TempoSection*> (*i);
+
+ if (!t->active()) {
+ continue;
+ }
+
+ if (prev && t == ts) {
+
+ return prev;
+ }
+
+ prev = t;
+ }
+ }
+
+ if (prev == 0) {
+ fatal << endmsg;
+ abort(); /*NOTREACHED*/
+ }
+
+ return 0;
+}
+
+TempoSection*
+TempoMap::next_tempo_section (TempoSection* ts) const
+{
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+
+ return next_tempo_section_locked (_metrics, ts);
+}
+
+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->active()) {
+ continue;
+ }
+
+ if (prev && prev == ts) {
+
+ return t;
+ }
+
+ prev = t;
+ }
+ }
+
+ if (prev == 0) {
+ fatal << endmsg;
+ abort(); /*NOTREACHED*/
+ }
+
+ return 0;
+}
/* don't use this to calculate length (the tempo is only correct for this frame).
do that stuff based on the beat_at_frame and frame_at_beat api
*/
double
-TempoMap::frames_per_beat_at (const framepos_t& frame, const framecnt_t& sr) const
+TempoMap::frames_per_quarter_note_at (const framepos_t frame, const framecnt_t sr) const
{
Glib::Threads::RWLock::ReaderLock lm (lock);
ts_at = t;
}
}
+ assert (ts_at);
if (ts_after) {
- return (60.0 * _frame_rate) / ts_at->tempo_at_minute (minute_at_frame (frame));
+ return (60.0 * _frame_rate) / ts_at->tempo_at_minute (minute_at_frame (frame)).quarter_notes_per_minute();
}
/* must be treated as constant tempo */
- return ts_at->frames_per_beat (_frame_rate);
+ return ts_at->frames_per_quarter_note (_frame_rate);
}
const MeterSection&
{
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);
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_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 (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) {
}
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()
+ o << "Tempo @ " << *i << " start : " << t->note_types_per_minute() << " end : " << t->end_note_types_per_minute() << " BPM (pulse = 1/" << t->note_type()
<< " type= " << enum_2_string (t->type()) << ") " << " at pulse= " << t->pulse()
- << " minute= " << t->minute() << " frame= " << t->frame() << " (movable? " << t->movable() << ')'
+ << " minute= " << t->minute() << " frame= " << t->frame() << " (initial? " << t->initial() << ')'
<< " pos lock: " << enum_2_string (t->position_lock_style()) << std::endl;
if (prev_t) {
- o << std::setprecision (17) << " current : " << t->beats_per_minute()
+ o << " current start : " << t->note_types_per_minute()
+ << " current end : " << t->end_note_types_per_minute()
<< " | " << t->pulse() << " | " << t->frame() << " | " << t->minute() << std::endl;
- o << " previous : " << prev_t->beats_per_minute()
+ o << " previous : " << prev_t->note_types_per_minute()
<< " | " << prev_t->pulse() << " | " << prev_t->frame() << " | " << prev_t->minute() << std::endl;
o << " calculated : " << prev_t->tempo_at_pulse (t->pulse())
- << " | " << prev_t->pulse_at_tempo (t->beats_per_minute(), t->minute())
- << " | " << frame_at_minute (prev_t->minute_at_tempo (t->beats_per_minute(), t->pulse()))
- << " | " << prev_t->minute_at_tempo (t->beats_per_minute(), t->pulse()) << std::endl;
+ << " | " << prev_t->pulse_at_ntpm (prev_t->end_note_types_per_minute(), t->minute())
+ << " | " << frame_at_minute (prev_t->minute_at_ntpm (prev_t->end_note_types_per_minute(), t->pulse()))
+ << " | " << prev_t->minute_at_ntpm (prev_t->end_note_types_per_minute(), t->pulse()) << std::endl;
}
prev_t = t;
} else if ((m = dynamic_cast<const MeterSection*>(*i)) != 0) {
o << "Meter @ " << *i << ' ' << m->divisions_per_bar() << '/' << m->note_divisor() << " at " << m->bbt()
<< " frame= " << m->frame() << " pulse: " << m->pulse() << " beat : " << m->beat()
- << " pos lock: " << enum_2_string (m->position_lock_style()) << " (movable? " << m->movable() << ')' << endl;
+ << " pos lock: " << enum_2_string (m->position_lock_style()) << " (initial? " << m->initial() << ')' << endl;
}
}
o << "------" << std::endl;
TempoMap::insert_time (framepos_t where, framecnt_t amount)
{
for (Metrics::reverse_iterator i = _metrics.rbegin(); i != _metrics.rend(); ++i) {
- if ((*i)->frame() >= where && (*i)->movable ()) {
+ if ((*i)->frame() >= where && !(*i)->initial ()) {
MeterSection* ms;
TempoSection* ts;
if ((ms = dynamic_cast <MeterSection*>(*i)) != 0) {
- gui_move_meter (ms, (*i)->frame() + amount);
+ gui_set_meter_position (ms, (*i)->frame() + amount);
}
if ((ts = dynamic_cast <TempoSection*>(*i)) != 0) {
- gui_move_tempo (ts, (*i)->frame() + amount, 0);
+ gui_set_tempo_position (ts, (*i)->frame() + amount, 0);
}
}
}
* pos can be -ve, if required.
*/
framepos_t
-TempoMap::framepos_plus_qn (framepos_t frame, Evoral::Beats quarter_note) const
+TempoMap::framepos_plus_qn (framepos_t frame, Evoral::Beats beats) const
{
Glib::Threads::RWLock::ReaderLock lm (lock);
+ const double frame_qn = pulse_at_minute_locked (_metrics, minute_at_frame (frame)) * 4.0;
- return frame_at_minute (minute_at_quarter_note_locked (_metrics, quarter_note_at_minute_locked (_metrics, minute_at_frame (frame)) + quarter_note.to_double()));
+ return frame_at_minute (minute_at_pulse_locked (_metrics, (frame_qn + beats.to_double()) / 4.0));
}
framepos_t
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- return Evoral::Beats (quarter_note_at_minute_locked (_metrics, minute_at_frame (pos + distance)) - quarter_note_at_minute_locked (_metrics, minute_at_frame (pos)));
+ return Evoral::Beats (quarter_notes_between_frames_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&
projects / ardour.git / blobdiff