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feat: TempoController: minimal demo

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This commit is contained in:
David Madl
2026-06-14 17:46:32 +02:00
parent 968afb6920
commit 81e8d2727b
2 changed files with 17 additions and 0 deletions
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13
app/src/main/cpp/TempoController.cpp
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@@ -37,7 +37,9 @@ void TempoController::seekTo(double oldMarkerPosSec, double newMarkerPosSec) {
*/
void TempoController::onBeat(double t) {
std::lock_guard<std::mutex> lock(mMutex);
if(lastBeatT != 0.0) dtBeat = t - lastBeatT;
lastBeatT = t;
setStretchFactor();
}
/**
@@ -46,5 +48,16 @@ void TempoController::onBeat(double t) {
*/
void TempoController::onStep(double t) {
std::lock_guard<std::mutex> lock(mMutex);
if(lastStepT != 0.0) dtStep = t - lastStepT;
lastStepT = t;
setStretchFactor();
}
void TempoController::setStretchFactor() {
if(dtBeat == 0.0 || dtStep == 0.0) return;
double ratio = dtStep / dtBeat;
ratio = std::min(3.3, ratio);
ratio = std::max(0.3, ratio);
this->have_stretch_factor->store(true);
this->stretch_factor->store(ratio);
}