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Tempo ramps - towards having multiple audio-locked meters again.

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- also speeds up meter dragging
This commit is contained in:
nick_m 2016-03-25 00:26:05 +11:00
parent e4dfd23d2e
commit 187122ce5b
2 changed files with 11 additions and 8 deletions
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2
libs/ardour/ardour/tempo.h
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@ -440,7 +440,7 @@ private:
double pulse_at_frame_locked (const Metrics& metrics, const framecnt_t& frame) const;
framecnt_t frame_at_pulse_locked (const Metrics& metrics, const double& beat) const;
double pulse_offset_at (const Metrics& metrics, const double& pulse) const;
double beat_offset_at (const Metrics& metrics, const double& beat) const;
frameoffset_t frame_offset_at (const Metrics& metrics, const framepos_t& frame) const;
double beat_at_frame_locked (const Metrics& metrics, const framecnt_t& frame) const;

17
libs/ardour/tempo.cc
View File

@ -1834,34 +1834,35 @@ TempoMap::frame_at_pulse_locked (const Metrics& metrics, const double& pulse) co
}
double
TempoMap::pulse_offset_at (const Metrics& metrics, const double& pulse) const
TempoMap::beat_offset_at (const Metrics& metrics, const double& beat) const
{
MeterSection* prev_m = 0;
double pulse_off = first_meter().pulse();
double beat_off = first_meter().pulse();
for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
MeterSection* m = 0;
if ((m = dynamic_cast<MeterSection*> (*i)) != 0) {
if (prev_m) {
if (m->pulse() > pulse) {
if (m->beat() > beat) {
break;
}
if (m->position_lock_style() == AudioTime) {
pulse_off += (m->pulse() - prev_m->pulse()) - floor (m->pulse() - prev_m->pulse());
beat_off += ((m->beat() - prev_m->beat()) / prev_m->note_divisor()) - floor (m->pulse() - prev_m->pulse());
}
}
prev_m = m;
}
}
return pulse_off;
return beat_off;
}
frameoffset_t
TempoMap::frame_offset_at (const Metrics& metrics, const framepos_t& frame) const
{
frameoffset_t frame_off = 0;
MeterSection* prev_m = 0;
for (Metrics::const_iterator i = metrics.begin(); i != metrics.end(); ++i) {
MeterSection* m = 0;
@ -1869,9 +1870,11 @@ TempoMap::frame_offset_at (const Metrics& metrics, const framepos_t& frame) cons
if (m->frame() > frame) {
break;
}
if (m->position_lock_style() == AudioTime) {
frame_off += frame_at_pulse_locked (metrics, m->pulse()) - m->frame();
if (prev_m && m->position_lock_style() == AudioTime) {
const double pulse = prev_m->pulse() + ((m->beat() - prev_m->beat()) / prev_m->note_divisor());
frame_off += frame_at_pulse_locked (metrics, pulse) - m->frame();
}
prev_m = m;
}
}