loop()

void loop

(

)

Definition at line 470 of file advanced.h.

            {
    // Check if audio is enabled
    if (!enableAudio) {
        // Show a simple test pattern
        fill_rainbow(leds, NUM_LEDS, hue++, 7);
        FastLED.show();
        delay(20);
        return;
    }
    
    // Process only one audio sample per frame to avoid accumulation
    AudioSample sample = audio.next();
    if (sample.isValid()) {
        // Update sound meter
        soundMeter.processBlock(sample.pcm());
        
        // Get audio levels
        float rms = sample.rms() / 32768.0f;
        
        // Calculate peak
        int32_t maxSample = 0;
        for (size_t i = 0; i < sample.pcm().size(); i++) {
            int32_t absSample = fabsf(sample.pcm()[i]);
            if (absSample > maxSample) {
                maxSample = absSample;
            }
        }
        float peak = float(maxSample) / 32768.0f;
        peakLevel = peakLevel * 0.9f + peak * 0.1f;  // Smooth peak
        
        // Update auto gain
        updateAutoGain(rms);
        
        // Beat detection
        if (beatDetect) {
            isBeat = detectBeat(peak);
        }
        
        // Get FFT data - create local FFTBins to avoid accumulation
        FFTBins fftBins(NUM_BANDS);
        sample.fft(&fftBins);
        
        // Update color animation
        hue += 1;
        
        // Apply beat flash
        if (isBeat && beatFlash) {
            for (int i = 0; i < NUM_LEDS; i++) {
                leds[i].fadeLightBy(-50);  // Make brighter
            }
        }
        
        // Draw selected visualization
        switch (visualMode.as_int()) {
            case 0:  // Spectrum Bars
                drawSpectrumBars(&fftBins, peakLevel);
                break;
                
            case 1:  // Radial Spectrum
                drawRadialSpectrum(&fftBins, peakLevel);
                break;
                
            case 2:  // Waveform
                drawWaveform(sample.pcm(), peakLevel);
                break;
                
            case 3:  // VU Meter
                drawVUMeter(rms, peakLevel);
                break;
                
            case 4:  // Matrix Rain
                drawMatrixRain(peakLevel);
                break;
                
            case 5:  // Fire Effect
                drawFireEffect(peakLevel);
                break;
                
            case 6:  // Plasma Wave
                drawPlasmaWave(peakLevel);
                break;
        }
    }
    
    FastLED.show();
    
    // Add a small delay to prevent tight loops in WebAssembly
    #ifdef __EMSCRIPTEN__
    delay(1);
    #endif
}

References audio(), beatDetect(), beatFlash(), detectBeat(), drawFireEffect(), drawMatrixRain(), drawPlasmaWave(), drawRadialSpectrum(), drawSpectrumBars(), drawVUMeter(), drawWaveform(), enableAudio(), FastLED, fl::AudioSample::fft(), fill_rainbow(), hue, isBeat, fl::AudioSample::isValid(), leds, NUM_BANDS, NUM_LEDS, fl::AudioSample::pcm(), peakLevel, fl::AudioSample::rms(), rms(), soundMeter(), updateAutoGain(), and visualMode().

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