update()

void fl::audio::detector::EnergyAnalyzer::update ( shared_ptr< Context > context )

overridevirtual

Implements fl::audio::Detector.

Definition at line 23 of file energy_analyzer.cpp.hpp.

                                                       {
    // Get RMS directly from Sample (no fft::FFT needed)
    mCurrentRMS = context->getRMS();
    u32 timestamp = context->getTimestamp();
 
    // Update peak tracking
    updatePeak(mCurrentRMS, timestamp);
 
    // Update average and history
    updateAverage(mCurrentRMS);
 
    // Update min/max
    if (mCurrentRMS > 0.001f) {  // Ignore near-silence
        mMinEnergy = fl::min(mMinEnergy, mCurrentRMS);
        mMaxEnergy = fl::max(mMaxEnergy, mCurrentRMS);
    }
 
    // Compute normalized 0-1 RMS using adaptive range tracking.
    // AttackDecayFilter: instant attack (0.001s), slow decay (2.0s).
    const float dt = computeAudioDt(context->getPCM().size(), context->getSampleRate());
    float runningMax = mRunningMaxFilter.update(mCurrentRMS, dt);
    // Ensure running max doesn't decay below a minimum threshold
    if (runningMax < 1.0f) {
        runningMax = 1.0f;
    }
    mNormalizedRMS = fl::min(1.0f, mCurrentRMS / runningMax);
}

References EnergyAnalyzer(), fl::audio::computeAudioDt(), fl::max(), mCurrentRMS, fl::min(), mMaxEnergy, mMinEnergy, mNormalizedRMS, mRunningMaxFilter, update(), updateAverage(), and updatePeak().

Referenced by ~EnergyAnalyzer(), and update().

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