Method update

src/fl/audio/detector/buildup.cpp.hpp:40–117

BuildupDetector::~BuildupDetector() FL_NOEXCEPT = default;

void BuildupDetector::update(shared_ptr<Context> context) {
    if (!context) {
        FL_WARN("BuildupDetector::update: null context");
        return;
    }

    mRetainedFFT = context->getFFT(32);
    const fft::Bins& fft = *mRetainedFFT;
    float rms = context->getRMS();
    float treble = getTrebleEnergy(fft);
    u32 timestamp = context->getTimestamp();

    // Update history and SG filters
    updateEnergyHistory(rms);
    updateTrebleHistory(treble);
    mEnergySG.update(rms);
    mTrebleSG.update(treble);

    // Calculate trends
    float energyTrend = calculateEnergyTrend();
    float trebleTrend = calculateTrebleTrend();

    // Calculate buildup intensity
    float intensity = calculateBuildupIntensity(energyTrend, trebleTrend, rms);

    if (!mBuildupActive) {
        // Check if we should start a buildup
        if (shouldStartBuildup(intensity)) {
            mBuildupActive = true;
            mPeakFired = false;
            mCurrentBuildup.timestamp = timestamp;
            mCurrentBuildup.intensity = intensity;
            mCurrentBuildup.progress = 0.0f;
            mCurrentBuildup.duration = 0;
            mCurrentBuildup.active = true;

            FL_DBG("BuildupDetector: Buildup started (intensity=" << intensity << ")");

            mFireBuildupStart = true;
        }
    } else {
        // Update existing buildup
        mCurrentBuildup.duration = timestamp - mCurrentBuildup.timestamp;
        mCurrentBuildup.intensity = intensity;

        // Calculate progress (0.0 to 1.0)
        float normalizedDuration = static_cast<float>(mCurrentBuildup.duration) / static_cast<float>(mMaxDuration);
        mCurrentBuildup.progress = fl::min(1.0f, normalizedDuration);

        // Check if we've reached peak (just before drop)
        if (!mPeakFired && shouldPeak()) {
            mPeakFired = true;
            FL_DBG("BuildupDetector: Peak reached");

            mFireBuildupPeak = true;
        }

        // Set progress callback flag