KwidgetProcessor_AudioOut.cpp

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namespace krotos
{
    KwidgetProcessor_AudioOut::KwidgetProcessor_AudioOut(Kwidget& owner) : KwidgetProcessor(owner)
    {
        using P = Parameters;
 
        addParameterAttachments({{P::Volume, [this](float x) { setGain(x); }, 2}, {P::Mute, nullptr, -1}});
    }
 
    void KwidgetProcessor_AudioOut::setGain(float gain) { m_gain = Decibels::decibelsToGain(gain); }
 
    void KwidgetProcessor_AudioOut::prepare(double /*sampleRate*/, int /*samplesPerBlock*/) {}
 
    void KwidgetProcessor_AudioOut::process(AudioBuffer<float>& buffer)
    {
        auto numSamples = buffer.getNumSamples();
        auto numChannels = buffer.getNumChannels();
        auto bufferPtr = buffer.getArrayOfWritePointers();
 
        nextBlock(numSamples);
        auto muteGain = getAttachment(Parameters::Mute)->data();
 
        for (int i = 0; i < numSamples; i++)
        {
            nextSample();
 
            auto gain = m_gain * (1.0f - muteGain[i]);
            for (int j = 0; j < numChannels; j++)
                bufferPtr[j][i] *= gain;
        }
    }
} // namespace krotos