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get playhead on timeline and in pianorolls to be in sync

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We have to convert from audible sample to beats using the global tempo map, then
back to samples using the local tempo map
This commit is contained in:
Paul Davis 2025-08-23 22:33:54 -06:00
parent 7dadddb3dc
commit d20987aba4
1 changed files with 15 additions and 2 deletions
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17
gtk2_ardour/pianoroll.cc
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@ -560,14 +560,27 @@ Pianoroll::maybe_update ()
} else if (view->midi_region()) {
Temporal::TempoMap::SharedPtr global_tempo_map (Temporal::TempoMap::global_fetch());
Temporal::TempoMap::SharedPtr local_tempo_map (Temporal::TempoMap::use());
/* Timeline region editor */
if (!_session) {
return;
}
samplepos_t pos = _session->transport_sample();
samplepos_t spos = view->midi_region()->source_position().samples();
samplepos_t pos = _session->audible_sample();
/* find out the beat time represented by pos in the global map,
* convert back to sample position with the local map
*/
pos = local_tempo_map->sample_at (global_tempo_map->quarters_at (timepos_t (pos)));
/* Do the same for the source position */
samplepos_t spos = local_tempo_map->sample_at (global_tempo_map->quarters_at (view->midi_region()->source_position()));
if (pos < spos) {
_playhead_cursor->set_position (0);
} else {