loop()

void loop

(

)

Definition at line 143 of file Audio.ino.

            {
    if (triggered) {
        FASTLED_WARN("Triggered");
    }
    // fl::clear(framebuffer);
    // fl::clear(framebuffer);
 
    static uint32_t frame = 0;
 
    // x = pointX.as_int();
    y = HEIGHT / 2;
 
    bool do_frame = doFrame();
 
    while (AudioSample sample = audio.next()) {
        if (!do_frame) {
            continue;
        }
        float fade = audioFadeTracker(sample.pcm().data(), sample.pcm().size());
        shiftUp();
        // FASTLED_WARN("Audio sample size: " << sample.pcm().size());
        soundLevelMeter.processBlock(sample.pcm());
        // FASTLED_WARN("")
        auto dbfs = soundLevelMeter.getDBFS();
        // FASTLED_WARN("getDBFS: " << dbfs);
        int32_t max = 0;
        for (int i = 0; i < sample.pcm().size(); ++i) {
            int32_t x = ABS(sample.pcm()[i]);
            if (x > max) {
                max = x;
            }
        }
        float anim =
            fl::map_range<float, float>(max, 0.0f, 32768.0f, 0.0f, 1.0f);
        anim = fl::clamp(anim, 0.0f, 1.0f);
 
        x = fl::map_range<float, float>(anim, 0.0f, 1.0f, 0.0f, WIDTH - 1);
        // FASTLED_WARN("x: " << x);
 
        // fft.run(sample.pcm(), &fftOut);
        sample.fft(&fftOut);
 
        // FASTLED_ASSERT(fftOut.bins_raw.size() == WIDTH_2X,
        //                "FFT bins size mismatch");
 
        if (enableFFT) {
            auto max_x = fftOut.bins_raw.size() - 1;
            for (int i = 0; i < fftOut.bins_raw.size(); ++i) {
                auto x = i;
                auto v = fftOut.bins_db[i];
                // Map audio intensity to a position in the heat palette (0-255)
                v = fl::map_range<float, float>(v, 45, 70, 0, 1.f);
                v = fl::clamp(v, 0.0f, 1.0f);
                uint8_t heatIndex =
                    fl::map_range<float, uint8_t>(v, 0, 1, 0, 255);
 
                // FASTLED_WARN(v);
 
                // Use FastLED's built-in HeatColors palette
                auto c = ColorFromPalette(HeatColors_p, heatIndex);
                c.fadeToBlackBy(255 - heatIndex);
                framebuffer[frameBufferXY(x, 0)] = c;
                // FASTLED_WARN("y: " << i << " b: " << b);
            }
        }
 
        if (enableVolumeVis) {
            framebuffer[frameBufferXY(x, HEIGHT / 2)] = CRGB(0, 255, 0);
        }
 
        if (enableRMS) {
            float rms = sample.rms();
            FASTLED_WARN("RMS: " << rms);
            rms = fl::map_range<float, float>(rms, 0.0f, 32768.0f, 0.0f, 1.0f);
            rms = fl::clamp(rms, 0.0f, 1.0f) * WIDTH;
            framebuffer[frameBufferXY(rms, HEIGHT * 3 / 4)] = CRGB(0, 0, 255);
        }
        if (true) {
            uint16_t fade_width = fade * (WIDTH - 1);
            uint16_t h = HEIGHT / 4;
            // yellow
            int index = frameBufferXY(fade_width, h);
            auto c = CRGB(255, 255, 0);
            framebuffer[index] = c;
        }
    }
 
    // now downscale the framebuffer to the led matrix
    downscale(framebuffer, frameBufferXY, leds, ledsXY);
 
    FastLED.show();
}

References ABS, audio, audioFadeTracker(), fl::clamp(), fl::ColorFromPalette(), doFrame(), fl::downscale(), enableFFT, enableRMS, enableVolumeVis, FastLED, FASTLED_WARN, fftOut, framebuffer, frameBufferXY, HeatColors_p, HEIGHT, leds, ledsXY, fl::map_range(), rms(), shiftUp(), soundLevelMeter, triggered, WIDTH, x, and y.

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