Function applyGain

Source/PluginProcessor.cpp:14–40

#include "PluginEditor.h"

static void applyGain(juce::AudioBuffer<float>& buffer, const ModulatedValueProvider& gainProvider)
{
    // If the gain is not modulated, we can use the efficient block-based JUCE gain processor.
    if (gainProvider.lfoSignal == nullptr)
    {
        juce::dsp::Gain<float> gain;
        gain.setGainDecibels(gainProvider.baseValue);
        gain.setRampDurationSeconds(0.05f); // Apply smoothing for manual changes

        auto block = juce::dsp::AudioBlock<float>(buffer);
        auto context = juce::dsp::ProcessContextReplacing<float>(block);
        gain.process(context);
    }
    else // If gain is modulated, we must apply it sample-by-sample.
    {
        for (int channel = 0; channel < buffer.getNumChannels(); ++channel)
        {
            auto* channelData = buffer.getWritePointer(channel);
            for (int sample = 0; sample < buffer.getNumSamples(); ++sample)
            {
                // The provider does all the complex calculation for us!
                const float gainDb = gainProvider.get(sample);
                channelData[sample] *= juce::Decibels::decibelsToGain(gainDb);
            }
        }
    }
}

//==============================================================================
// BandProcessor Implementation