updateMeasurePhase()

void fl::audio::detector::Downbeat::updateMeasurePhase ( u32 timestamp )

private

Definition at line 378 of file downbeat.cpp.hpp.

                                               {
    if (mLastDownbeatTime == 0) {
        mMeasurePhase = 0.0f;
        return;
    }
 
    u32 timeSinceDownbeat = timestamp - mLastDownbeatTime;
    float beatInterval = mBeatDetector->getBPM() > 0.0f
        ? (60000.0f / mBeatDetector->getBPM())
        : 500.0f;
    float measureDuration = beatInterval * static_cast<float>(mBeatsPerMeasure);
 
    if (measureDuration > 0.0f) {
        mMeasurePhase = static_cast<float>(timeSinceDownbeat) / measureDuration;
 
        // Wrap phase to [0, 1)
        while (mMeasurePhase >= 1.0f) {
            mMeasurePhase -= 1.0f;
        }
    } else {
        mMeasurePhase = 0.0f;
    }
}

References mBeatDetector, mBeatsPerMeasure, mLastDownbeatTime, and mMeasurePhase.

Referenced by update().

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