#include "ardour/lmath.h"
#include "ardour/tempo.h"
-#include "i18n.h"
+#include "pbd/i18n.h"
#include <locale.h>
using namespace std;
char buf[256];
LocaleGuard lg;
- snprintf (buf, sizeof (buf), "%f", pulse());
+ 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), "%f", _beats_per_minute);
+ snprintf (buf, sizeof (buf), "%lf", _beats_per_minute);
root->add_property ("beats-per-minute", buf);
- snprintf (buf, sizeof (buf), "%f", _note_type);
+ 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);
root->add_property ("bbt", buf);
snprintf (buf, sizeof (buf), "%lf", beat());
root->add_property ("beat", buf);
- snprintf (buf, sizeof (buf), "%f", _note_type);
+ snprintf (buf, sizeof (buf), "%lf", _note_type);
root->add_property ("note-type", buf);
snprintf (buf, sizeof (buf), "%li", frame());
root->add_property ("frame", buf);
root->add_property ("lock-style", enum_2_string (position_lock_style()));
- snprintf (buf, sizeof (buf), "%f", _divisions_per_bar);
+ 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);
bool
TempoMap::remove_meter_locked (const MeterSection& meter)
{
- Metrics::iterator i;
- for (i = _metrics.begin(); i != _metrics.end(); ++i) {
- TempoSection* t = 0;
- if ((t = dynamic_cast<TempoSection*> (*i)) != 0) {
- if (meter.frame() == (*i)->frame()) {
- if (t->locked_to_meter()) {
+ if (meter.position_lock_style() == AudioTime) {
+ /* remove meter-locked tempo */
+ for (Metrics::iterator i = _metrics.begin(); i != _metrics.end(); ++i) {
+ TempoSection* t = 0;
+ if ((t = dynamic_cast<TempoSection*> (*i)) != 0) {
+ if (t->locked_to_meter() && meter.frame() == (*i)->frame()) {
delete (*i);
_metrics.erase (i);
break;
}
}
- for (i = _metrics.begin(); i != _metrics.end(); ++i) {
+ for (Metrics::iterator i = _metrics.begin(); i != _metrics.end(); ++i) {
if (dynamic_cast<MeterSection*> (*i) != 0) {
if (meter.frame() == (*i)->frame()) {
if ((*i)->movable()) {
TempoSection* t = new TempoSection (pulse, frame, tempo.beats_per_minute(), tempo.note_type(), type, pls);
t->set_locked_to_meter (locked_to_meter);
bool solved = false;
+
do_insert (t);
if (recompute) {
}
if (!solved && recompute) {
- remove_tempo_locked (*t);
- return 0;
+ recompute_map (_metrics);
}
return t;
}
if (!solved && recompute) {
- remove_meter_locked (*new_meter);
- return 0;
+ /* if this has failed to solve, there is little we can do other than to ensure that
+ the new map is recalculated.
+ */
+ warning << "Adding meter may have left the tempo map unsolved." << endmsg;
+ recompute_map (_metrics);
}
return new_meter;
return m;
}
+/** Returns the beat duration corresponding to the supplied frame, possibly returning a negative value.
+ * @param frame The session frame position.
+ * @return The beat duration according to the tempo map at the supplied frame.
+ * If the supplied frame lies before the first meter, the returned beat duration will be negative.
+ * The returned beat is obtained using the first meter and the continuation of the tempo curve (backwards).
+ *
+ * This function uses both tempo and meter.
+ */
double
TempoMap::beat_at_frame (const framecnt_t& frame) const
{
return beat_at_frame_locked (_metrics, frame);
}
-/* meter / tempo section based */
+/* This function uses both tempo and meter.*/
double
TempoMap::beat_at_frame_locked (const Metrics& metrics, const framecnt_t& frame) const
{
prev_m = static_cast<MeterSection*> (*i);
}
}
- if (frame < prev_m->frame()) {
- return 0.0;
- }
+
const double beat = prev_m->beat() + (ts.pulse_at_frame (frame, _frame_rate) - prev_m->pulse()) * prev_m->note_divisor();
/* audio locked meters fake their beat */
return pulse_at_bbt_locked (_metrics, bbt);
}
+double
+TempoMap::pulse_at_bbt_rt (const Timecode::BBT_Time& bbt)
+{
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+
+ if (!lm.locked()) {
+ throw std::logic_error ("TempoMap::pulse_at_bbt_rt() could not lock tempo map");
+ }
+
+ return pulse_at_bbt_locked (_metrics, bbt);
+}
+
double
TempoMap::pulse_at_bbt_locked (const Metrics& metrics, const Timecode::BBT_Time& bbt) const
{
Glib::Threads::RWLock::ReaderLock lm (lock, Glib::Threads::TRY_LOCK);
if (!lm.locked()) {
- throw std::logic_error ("TempoMap::bbt_time_rt() could not lock tempo map");
+ throw std::logic_error ("TempoMap::bbt_at_frame_rt() could not lock tempo map");
}
return bbt_at_frame_locked (_metrics, frame);
bbt.bars = 1;
bbt.beats = 1;
bbt.ticks = 0;
- warning << string_compose (_("tempo map asked for BBT time at frame %1\n"), frame) << endmsg;
return bbt;
}
return ret;
}
+/**
+ * Returns the distance from 0 in quarter pulses at the supplied frame.
+ *
+ * Plugin APIs don't count ticks in the same way PROGRAM_NAME does.
+ * We use ticks per beat whereas the rest of the world uses ticks per quarter note.
+ * This is more or less the VST's ppqPos (a scalar you use to obtain tick position
+ * in whatever ppqn you're using).
+ *
+ * @param frame The distance in frames relative to session 0 whose quarter note distance you would like.
+ * @return The quarter note (quarter pulse) distance from session 0 to the supplied frame. Ignores meter.
+*/
+
+double
+TempoMap::quarter_note_at_frame (const framepos_t frame)
+{
+ Glib::Threads::RWLock::ReaderLock lm (lock, Glib::Threads::TRY_LOCK);
+
+ const double ret = pulse_at_frame_locked (_metrics, frame) * 4.0;
+
+ return ret;
+}
+
+double
+TempoMap::quarter_note_at_frame_rt (const framepos_t frame)
+{
+ Glib::Threads::RWLock::ReaderLock lm (lock, Glib::Threads::TRY_LOCK);
+
+ if (!lm.locked()) {
+ throw std::logic_error ("TempoMap::quarter_note_at_frame_rt() could not lock tempo map");
+ }
+
+ const double ret = pulse_at_frame_locked (_metrics, frame) * 4.0;
+
+ return ret;
+}
+
+framepos_t
+TempoMap::frame_at_quarter_note (const double quarter_note)
+{
+ Glib::Threads::RWLock::ReaderLock lm (lock, Glib::Threads::TRY_LOCK);
+
+ const framepos_t ret = frame_at_pulse_locked (_metrics, quarter_note / 4.0);
+
+ return ret;
+}
+
bool
TempoMap::check_solved (const Metrics& metrics) const
{
m = static_cast<MeterSection*> (*i);
if (prev_m && m->position_lock_style() == AudioTime) {
const TempoSection* t = &tempo_section_at_frame_locked (metrics, m->frame() - 1);
- const double nascent_m_pulse = ((m->beat() - prev_m->beat()) / prev_m->note_divisor()) + prev_m->pulse();
- const framepos_t nascent_m_frame = t->frame_at_pulse (nascent_m_pulse, _frame_rate);
-
- if (t && (nascent_m_frame > m->frame() || nascent_m_frame < 0)) {
+ const framepos_t nascent_m_frame = t->frame_at_pulse (m->pulse(), _frame_rate);
+ /* Here we check that a preceding section of music doesn't overlap a subsequent one.
+ It is complicated by the fact that audio locked meters represent a discontinuity in the pulse
+ (they place an exact pulse at a particular time expressed only in frames).
+ This has the effect of shifting the calculated frame at the meter pulse (wrt the previous section of music)
+ away from its actual frame (which is now the frame location of the exact pulse).
+ This can result in the calculated frame (from the previous musical section)
+ differing from the exact frame by one sample.
+ Allow for that.
+ */
+ if (t && (nascent_m_frame > m->frame() + 1 || nascent_m_frame < 0)) {
return false;
}
}
MetricPositionChanged (); // Emit Signal
}
+/** Returns the exact beat subdivision closest to the supplied frame, possibly returning a negative value.
+ * @param frame The session frame position.
+ * @param sub_num The requested beat subdivision to use when rounding the frame position.
+ * @return The beat position of the supplied frame.
+ * If the supplied frame lies before the first meter, the return will be negative.
+ * The returned beat is obtained using the first meter and the continuation of the tempo curve (backwards).
+ *
+ * This function uses both tempo and meter.
+ */
double
-TempoMap::exact_beat_at_frame (const framepos_t& frame, const int32_t& sub_num)
+TempoMap::exact_beat_at_frame (const framepos_t& frame, const int32_t sub_num)
{
Glib::Threads::RWLock::ReaderLock lm (lock);
}
double
-TempoMap::exact_beat_at_frame_locked (const Metrics& metrics, const framepos_t& frame, const int32_t& sub_num)
+TempoMap::exact_beat_at_frame_locked (const Metrics& metrics, const framepos_t& frame, const int32_t sub_num)
{
double beat = beat_at_frame_locked (metrics, frame);
+
if (sub_num > 1) {
beat = floor (beat) + (floor (((beat - floor (beat)) * (double) sub_num) + 0.5) / sub_num);
} else if (sub_num == 1) {
Timecode::BBT_Time bbt = bbt_at_beat_locked (metrics, beat);
bbt.beats = 1;
bbt.ticks = 0;
- beat = beat_at_bbt_locked (metrics, bbt);
+
+ const double prev_b = beat_at_bbt_locked (_metrics, bbt);
+ ++bbt.bars;
+ const double next_b = beat_at_bbt_locked (_metrics, bbt);
+
+ if ((beat - prev_b) > (next_b - prev_b) / 2.0) {
+ beat = next_b;
+ } else {
+ beat = prev_b;
+ }
}
+
return beat;
}
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- const double tick_at_time = beat_at_frame_locked (_metrics, pos) * BBT_Time::ticks_per_beat;
+ const double tick_at_time = max (0.0, beat_at_frame_locked (_metrics, pos)) * BBT_Time::ticks_per_beat;
const double bbt_ticks = bbt.ticks + (bbt.beats * BBT_Time::ticks_per_beat);
const double total_beats = (tick_at_time + bbt_ticks) / BBT_Time::ticks_per_beat;
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 (beat_at_frame_locked (_metrics, fr) * BBT_Time::ticks_per_beat);
+ uint32_t ticks = (uint32_t) floor (max (0.0, beat_at_frame_locked (_metrics, fr)) * BBT_Time::ticks_per_beat);
uint32_t beats = (uint32_t) floor (ticks / BBT_Time::ticks_per_beat);
uint32_t ticks_one_subdivisions_worth = (uint32_t) BBT_Time::ticks_per_beat / sub_num;
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- const double beat_at_framepos = beat_at_frame_locked (_metrics, frame);
+ const double beat_at_framepos = max (0.0, beat_at_frame_locked (_metrics, frame));
BBT_Time bbt (bbt_at_beat_locked (_metrics, beat_at_framepos));
switch (type) {
catch (failed_constructor& err){
error << _("Tempo map: could not set new state, restoring old one.") << endmsg;
_metrics = old_metrics;
+ old_metrics.clear();
break;
}
catch (failed_constructor& err) {
error << _("Tempo map: could not set new state, restoring old one.") << endmsg;
_metrics = old_metrics;
+ old_metrics.clear();
break;
}
}
}
recompute_map (_metrics);
+
+ Metrics::const_iterator d = old_metrics.begin();
+ while (d != old_metrics.end()) {
+ delete (*d);
+ ++d;
+ }
+ old_metrics.clear ();
}
PropertyChanged (PropertyChange ());
bbt.beats = 1;
}
}
- pair<double, BBT_Time> start = make_pair (beat_at_frame_locked (_metrics, m->frame()), bbt);
+ pair<double, BBT_Time> start = make_pair (max (0.0, beat_at_frame_locked (_metrics, m->frame())), bbt);
m->set_beat (start);
m->set_pulse (pulse_at_frame_locked (_metrics, m->frame()));
meter = m;
* pos can be -ve, if required.
*/
framepos_t
-TempoMap::framepos_plus_beats (framepos_t pos, Evoral::Beats beats) const
+TempoMap::framepos_plus_beats (framepos_t frame, Evoral::Beats beats) const
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- return frame_at_beat_locked (_metrics, beat_at_frame_locked (_metrics, pos) + beats.to_double());
+ return frame_at_beat_locked (_metrics, beat_at_frame_locked (_metrics, frame) + beats.to_double());
}
/** Subtract some (fractional) beats from a frame position, and return the result in frames */
projects / ardour.git / blobdiff