void BpmControl::slotAdjustBeatsSlower(double v) {
BeatsPointer pBeats = m_pBeats;
if (v > 0 && pBeats && (pBeats->getCapabilities() & Beats::BEATSCAP_SETBPM)) {
double new_bpm = math_max(10.0, pBeats->getBpm() - .01);
pBeats->setBpm(new_bpm);
}
}
void BpmControl::slotTapFilter(double averageLength, int numSamples) {
// averageLength is the average interval in milliseconds tapped over
// numSamples samples. Have to convert to BPM now:
if (averageLength <= 0)
return;
if (numSamples < 4)
return;
BeatsPointer pBeats = m_pBeats;
if (!pBeats)
return;
// (60 seconds per minute) * (1000 milliseconds per second) / (X millis per
// beat) = Y beats/minute
double averageBpm = 60.0 * 1000.0 / averageLength / calcRateRatio();
pBeats->setBpm(averageBpm);
}