Method updateFilter

Source/PluginProcessor.cpp:1232–1294

}

void FireAudioProcessor::updateFilter(double sampleRate)
{
    auto chainSettings = getChainSettings(treeState);
    const float minFreq = 20.0f;
    if (sampleRate <= 0)
        return;

    float maxFreq = sampleRate / 2.0f;

    if (maxFreq < minFreq)
    {
        maxFreq = minFreq;
    }

    chainSettings.lowCutFreq = juce::jlimit(minFreq, maxFreq, chainSettings.lowCutFreq);
    chainSettings.peakFreq = juce::jlimit(minFreq, maxFreq, chainSettings.peakFreq);
    chainSettings.highCutFreq = juce::jlimit(minFreq, maxFreq, chainSettings.highCutFreq);

    // Set the target values for all 9 smoothers
    lowcutFreqSmoother.setTargetValue(chainSettings.lowCutFreq);
    lowcutGainSmoother.setTargetValue(chainSettings.lowCutGainInDecibels);
    lowcutQualitySmoother.setTargetValue(chainSettings.lowCutQuality);

    peakFreqSmoother.setTargetValue(chainSettings.peakFreq);
    peakGainSmoother.setTargetValue(chainSettings.peakGainInDecibels);
    peakQualitySmoother.setTargetValue(chainSettings.peakQuality);

    highcutFreqSmoother.setTargetValue(chainSettings.highCutFreq);
    highcutGainSmoother.setTargetValue(chainSettings.highCutGainInDecibels);
    highcutQualitySmoother.setTargetValue(chainSettings.highCutQuality);

    // Create a new settings object with the smoothed values for this audio block
    ChainSettings smoothedSettings;
    smoothedSettings.lowCutFreq = lowcutFreqSmoother.getNextValue();
    smoothedSettings.lowCutGainInDecibels = lowcutGainSmoother.getNextValue();
    smoothedSettings.lowCutQuality = lowcutQualitySmoother.getNextValue();

    smoothedSettings.peakFreq = peakFreqSmoother.getNextValue();
    smoothedSettings.peakGainInDecibels = peakGainSmoother.getNextValue();
    smoothedSettings.peakQuality = peakQualitySmoother.getNextValue();

    // Get the smoothed high-cut frequency value.
    float highCutFreqValue = highcutFreqSmoother.getNextValue();
    // Define the Nyquist frequency.
    const float nyquist = (float) sampleRate / 2.0f;
    // Clamp the high-cut frequency to ensure it never exceeds the Nyquist frequency.
    smoothedSettings.highCutFreq = juce::jmin(highCutFreqValue, nyquist);

    smoothedSettings.highCutGainInDecibels = highcutGainSmoother.getNextValue();
    smoothedSettings.highCutQuality = highcutQualitySmoother.getNextValue();

    // Slopes and bypass states don't need smoothing, use them directly
    smoothedSettings.lowCutSlope = chainSettings.lowCutSlope;
    smoothedSettings.highCutSlope = chainSettings.highCutSlope;
    smoothedSettings.lowCutBypassed = chainSettings.lowCutBypassed;
    smoothedSettings.peakBypassed = chainSettings.peakBypassed;
    smoothedSettings.highCutBypassed = chainSettings.highCutBypassed;