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Tempo ramps - before the first meter, the beat is 0.0

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nick_m 2016-04-17 04:26:19 +10:00
parent 4820a11180
commit 94e7e4e53b
1 changed files with 3 additions and 0 deletions
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3
libs/ardour/tempo.cc
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@ -1542,6 +1542,9 @@ TempoMap::beat_at_frame_locked (const Metrics& metrics, const framecnt_t& frame)
{
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();
}