_frame_rate = fr;
BBT_Time start (1, 1, 0);
- TempoSection *t = new TempoSection (0.0, _default_tempo.beats_per_minute(), _default_tempo.note_type(), TempoSection::Constant);
- MeterSection *m = new MeterSection (0.0, 0.0, start, _default_meter.divisions_per_bar(), _default_meter.note_divisor());
+ TempoSection *t = new TempoSection ((framepos_t) 0, _default_tempo.beats_per_minute(), _default_tempo.note_type(), TempoSection::Constant);
+ MeterSection *m = new MeterSection ((framepos_t) 0, 0.0, start, _default_meter.divisions_per_bar(), _default_meter.note_divisor());
t->set_movable (false);
m->set_movable (false);
- t->set_position_lock_style (AudioTime);
- m->set_position_lock_style (AudioTime);
/* note: frame time is correct (zero) for both of these */
if (meter->movable()) {
const double beats = ((pulse_at_frame_locked (metrics, meter->frame()) - prev_m->pulse()) * prev_m->note_divisor());
const double floor_beats = beats - fmod (beats, prev_m->divisions_per_bar());
- b_bbt = make_pair (floor_beats + prev_m->beat(), BBT_Time ((floor_beats / prev_m->divisions_per_bar()) + prev_m->bbt().bars, 1, 0));
- const double true_pulse = prev_m->pulse() + (floor_beats / prev_m->note_divisor());
- const double pulse_off = true_pulse - (beats / prev_m->note_divisor()) - prev_m->pulse();
- pulse = true_pulse - pulse_off;
+ if (floor_beats + prev_m->beat() < meter->beat()) {
+ /* tempo change caused a change in beat (bar). */
+ b_bbt = make_pair (floor_beats + prev_m->beat(), BBT_Time ((floor_beats / prev_m->divisions_per_bar()) + prev_m->bbt().bars, 1, 0));
+ const double true_pulse = prev_m->pulse() + (floor_beats / prev_m->note_divisor());
+ const double pulse_off = true_pulse - (beats / prev_m->note_divisor()) - prev_m->pulse();
+ pulse = true_pulse - pulse_off;
+ } else {
+ b_bbt = make_pair (meter->beat(), meter->bbt());
+ pulse = pulse_at_frame_locked (metrics, meter->frame());
+ }
} else {
b_bbt = make_pair (0.0, BBT_Time (1, 1, 0));
}
MeterSection* m;
if ((m = dynamic_cast<MeterSection*> (*i)) != 0) {
if (prev_m && m->pulse() > pulse) {
- break;
+ if ((pulse - prev_m->pulse()) * prev_m->note_divisor() < m->beat()) {
+ break;
+ }
}
prev_m = m;
}
return pulses_in_section + prev_t->pulse();
}
+double
+TempoMap::pulse_at_frame (const framecnt_t& frame) const
+{
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+ return pulse_at_frame_locked (_metrics, frame);
+}
+
framecnt_t
TempoMap::frame_at_pulse_locked (const Metrics& metrics, const double& pulse) const
{
return ret;
}
+framecnt_t
+TempoMap::frame_at_pulse (const double& pulse) const
+{
+ Glib::Threads::RWLock::ReaderLock lm (lock);
+ return frame_at_pulse_locked (_metrics, pulse);
+}
+
double
TempoMap::beat_at_frame_locked (const Metrics& metrics, const framecnt_t& frame) const
{
- const double pulse = pulse_at_frame_locked (metrics, frame);
- return beat_at_pulse_locked (metrics, pulse);
+ const MeterSection& prev_m = meter_section_at_locked (metrics, frame);
+ const TempoSection& ts = tempo_section_at_locked (metrics, frame);
+ if (frame < prev_m.frame()) {
+ return 0.0;
+ }
+ return prev_m.beat() + (ts.pulse_at_frame (frame, _frame_rate) - prev_m.pulse()) * prev_m.note_divisor();
}
double
void
TempoMap::solve_map (Metrics& imaginary, MeterSection* section, const framepos_t& frame)
{
+ /* disallow moving first meter past any subsequent one, and any movable meter before the first one */
+ const MeterSection* other = &meter_section_at_locked (imaginary, frame);
+ if ((!section->movable() && other->movable()) || (!other->movable() && section->movable() && other->frame() >= frame)) {
+ return;
+ }
MeterSection* prev_m = 0;
if (!section->movable()) {
}
}
- section->set_frame (frame);
-
for (Metrics::iterator i = imaginary.begin(); i != imaginary.end(); ++i) {
MeterSection* m;
if ((m = dynamic_cast<MeterSection*> (*i)) != 0) {
/*
here we set the beat for this frame.
we set it 'incorrectly' to the next bar's first beat
- and use the delat to find the meter's pulse.
+ and use the delta to find the meter's pulse.
*/
double new_pulse = 0.0;
pair<double, BBT_Time> b_bbt;
if (section->movable()) {
const double beats = ((pulse_at_frame_locked (imaginary, frame) - prev_m->pulse()) * prev_m->note_divisor());
const double floor_beats = beats - fmod (beats, prev_m->divisions_per_bar());
- b_bbt = make_pair (floor_beats + prev_m->beat(), BBT_Time ((floor_beats / prev_m->divisions_per_bar()) + prev_m->bbt().bars, 1, 0));
- const double true_pulse = prev_m->pulse() + (floor_beats / prev_m->note_divisor());
- const double pulse_off = true_pulse - (beats / prev_m->note_divisor()) - prev_m->pulse();
- new_pulse = true_pulse - pulse_off;
+ if (floor_beats + prev_m->beat() < section->beat()) {
+ /* disallow position change if it will alter out beat
+ we allow tempo changes to do this in recompute_meters().
+ blocking this is an option, but i'm not convinced that
+ this is what the user would actually want.
+ */
+ return;
+ }
+ b_bbt = make_pair (section->beat(), section->bbt());
+ new_pulse = pulse_at_frame_locked (imaginary, frame);
} else {
b_bbt = make_pair (0.0, BBT_Time (1, 1, 0));
}
-
+ section->set_frame (frame);
section->set_beat (b_bbt);
section->set_pulse (new_pulse);
prev_m = m;
framepos_t lower, framepos_t upper)
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- const int32_t upper_beat = (int32_t) ceil (beat_at_frame_locked (_metrics, upper));
- int32_t cnt = floor (beat_at_frame_locked (_metrics, lower));
+ const int32_t upper_beat = (int32_t) floor (beat_at_frame_locked (_metrics, upper));
+ int32_t cnt = ceil (beat_at_frame_locked (_metrics, lower));
+ framecnt_t pos = 0;
/* although the map handles negative beats, bbt doesn't. */
if (cnt < 0.0) {
cnt = 0.0;
}
- while (cnt <= upper_beat) {
- framecnt_t pos = frame_at_beat_locked (_metrics, cnt);
- const TempoSection tempo = tempo_section_at_locked (pos);
- const MeterSection meter = meter_section_at_locked (pos);
+ while (cnt <= upper_beat && pos < upper) {
+ pos = frame_at_beat_locked (_metrics, cnt);
+ const TempoSection tempo = tempo_section_at_locked (_metrics, pos);
+ const MeterSection meter = meter_section_at_locked (_metrics, pos);
const BBT_Time bbt = beats_to_bbt (cnt);
- points.push_back (BBTPoint (meter, tempo_at_locked (pos), pos, bbt.bars, bbt.beats, tempo.c_func()));
+ points.push_back (BBTPoint (meter, tempo_at_locked (_metrics, pos), pos, bbt.bars, bbt.beats, tempo.c_func()));
++cnt;
}
}
TempoMap::tempo_section_at (framepos_t frame) const
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- return tempo_section_at_locked (frame);
+ return tempo_section_at_locked (_metrics, frame);
}
const TempoSection&
-TempoMap::tempo_section_at_locked (framepos_t frame) const
+TempoMap::tempo_section_at_locked (const Metrics& metrics, framepos_t frame) const
{
Metrics::const_iterator i;
TempoSection* prev = 0;
- for (i = _metrics.begin(); i != _metrics.end(); ++i) {
+ for (i = metrics.begin(); i != metrics.end(); ++i) {
TempoSection* t;
if ((t = dynamic_cast<TempoSection*> (*i)) != 0) {
if (!t->active()) {
continue;
}
- if (t->frame() > frame) {
+ if (prev && t->frame() > frame) {
break;
}
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- const TempoSection* ts_at = &tempo_section_at_locked (frame);
+ const TempoSection* ts_at = &tempo_section_at_locked (_metrics, frame);
const TempoSection* ts_after = 0;
Metrics::const_iterator i;
TempoMap::tempo_at (const framepos_t& frame) const
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- return tempo_at_locked (frame);
+ return tempo_at_locked (_metrics, frame);
}
const Tempo
-TempoMap::tempo_at_locked (const framepos_t& frame) const
+TempoMap::tempo_at_locked (const Metrics& metrics, const framepos_t& frame) const
{
TempoSection* prev_t = 0;
TempoMap::meter_section_at (framepos_t frame) const
{
Glib::Threads::RWLock::ReaderLock lm (lock);
- return meter_section_at_locked (frame);
+ return meter_section_at_locked (_metrics, frame);
}
const MeterSection&
-TempoMap::meter_section_at_locked (framepos_t frame) const
+TempoMap::meter_section_at_locked (const Metrics& metrics, framepos_t frame) const
{
Metrics::const_iterator i;
MeterSection* prev = 0;
- for (i = _metrics.begin(); i != _metrics.end(); ++i) {
+ for (i = metrics.begin(); i != metrics.end(); ++i) {
MeterSection* m;
if ((m = dynamic_cast<MeterSection*> (*i)) != 0) {
projects / ardour.git / blobdiff