double BpmControl::updateLocalBpm() {
double prev_local_bpm = m_pLocalBpm->get();
double local_bpm = 0;
BeatsPointer pBeats = m_pBeats;
if (pBeats) {
local_bpm = pBeats->getBpmAroundPosition(
getSampleOfTrack().current, kLocalBpmSpan);
if (local_bpm == -1) {
local_bpm = m_pFileBpm->get();
}
} else {
local_bpm = m_pFileBpm->get();
}
if (local_bpm != prev_local_bpm) {
m_pLocalBpm->set(local_bpm);
slotUpdateEngineBpm();
}
return local_bpm;
}
void BpmControl::slotFileBpmChanged(double file_bpm) {
// Adjust the file-bpm with the current setting of the rate to get the
// engine BPM. We only do this for SYNC_NONE decks because EngineSync will
// set our BPM if the file BPM changes. See SyncControl::fileBpmChanged().
//qDebug() << "BpmControl::slotFileBpmChanged" << file_bpm;
BeatsPointer pBeats = m_pBeats;
if (pBeats) {
const double beats_bpm =
pBeats->getBpmAroundPosition(
getSampleOfTrack().current, kLocalBpmSpan);
if (beats_bpm != -1) {
m_pLocalBpm->set(beats_bpm);
} else {
m_pLocalBpm->set(file_bpm);
}
} else {
m_pLocalBpm->set(file_bpm);
}
resetSyncAdjustment();
}