/* _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);
framepos_t
MetricSection::frame_at_minute (const double& time) const
BBT_Time bbt;
double pulse;
uint32_t frame;
- double minute;
- bool had_beats_per_minute = false;
_legacy_bbt = BBT_Time (0, 0, 0);
if ((prop = node.property ("frame")) != 0) {
if (sscanf (prop->value().c_str(), "%" PRIu32, &frame) != 1) {
error << _("TempoSection XML node has an illegal \"frame\" value") << endmsg;
+ throw failed_constructor();
} else {
set_minute (minute_at_frame (frame));
}
}
- 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);
- }
- }
-
- /* replace old beats-per-minute with note-types-per-minute */
+ /* XX replace old beats-per-minute name with note-types-per-minute */
if ((prop = node.property ("beats-per-minute")) != 0) {
- info << _("Renaming legacy \"beats-per-minute\" XML node to note-types-per-minute") << endmsg;
- if (sscanf (prop->value().c_str(), "%lf", &_note_types_per_minute) != 1 || _note_types_per_minute < 0.0) {
- error << _("TempoSection XML node has an illegal \"beats-per-minutee\" value") << endmsg;
- throw failed_constructor();
- }
- had_beats_per_minute = true;
- }
-
- if ((prop = node.property ("note-types-per-minute")) != 0) {
if (sscanf (prop->value().c_str(), "%lf", &_note_types_per_minute) != 1 || _note_types_per_minute < 0.0) {
- error << _("TempoSection XML node has an illegal \"note-types-per-minute\" value") << endmsg;
+ error << _("TempoSection XML node has an illegal \"beats-per-minute\" value") << endmsg;
throw failed_constructor();
}
- } else if (!had_beats_per_minute) {
- error << _("TempoSection XML node has no \"note-types-per-minute\" or \"beats-per-minute\" property") << endmsg;
- throw failed_constructor();
}
if ((prop = node.property ("note-type")) == 0) {
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", _note_types_per_minute);
- root->add_property ("note-types-per-minute", buf);
+ 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");
*
*/
-/** user feedback dictates that if tempoA (120, 4.0) precedes tempoB (120, 8.0),
- * there will be no ramp between the two even if set to ramped.
+/** 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.
- * we would ideally like to use arbitrary Tempo structs here.
*/
double
TempoSection::minute_at_ntpm (const double& ntpm, const double& p) const
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
{
double beat = 0.0;
framepos_t frame = 0;
pair<double, BBT_Time> start;
- double minute = 0.0;
if ((prop = node.property ("start")) != 0) {
if (sscanf (prop->value().c_str(), "%" PRIu32 "|%" PRIu32 "|%" PRIu32,
if ((prop = node.property ("frame")) != 0) {
if (sscanf (prop->value().c_str(), "%li", &frame) != 1) {
error << _("MeterSection XML node has an illegal \"frame\" value") << endmsg;
+ throw failed_constructor();
} else {
set_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 */
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);
prev_t = t;
}
}
+ assert (prev_t);
prev_t->set_c_func (0.0);
}
prev_m = m;
}
}
+ assert (prev_m);
TempoSection* t;
}
}
+ assert (prev_t);
return prev_t->minute_at_pulse (((beat - prev_m->beat()) / prev_m->note_divisor()) + prev_m->pulse());
}
prev_m = m;
}
}
+ assert (prev_m);
double const ret = ((pulse - prev_m->pulse()) * prev_m->note_divisor()) + prev_m->beat();
return ret;
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());
}
}
+ 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);
*
*/
double
-TempoMap::quarter_note_at_beat (const double beat)
+TempoMap::quarter_note_at_beat (const double beat) const
{
Glib::Threads::RWLock::ReaderLock lm (lock);
*
*/
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);
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* prev_to_prev_t = 0;
const frameoffset_t fr_off = end_frame - frame;
- if (prev_t && prev_t->pulse() > 0.0) {
+ assert (prev_t);
+
+ if (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)));
}
* 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);
}
* 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));
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;
ts_at = t;
}
}
+ assert (ts_at);
if (ts_after) {
return (60.0 * _frame_rate) / ts_at->tempo_at_minute (minute_at_frame (frame)).quarter_notes_per_minute();
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