main.cpp

class APGWrapper
{
public:
    AudioProcessorGraph graph;
    void prepare (const dsp::ProcessSpec& spec)
    {
        helperbuf.setSize(spec.numChannels, spec.maximumBlockSize);
        graph.prepareToPlay(spec.sampleRate, spec.maximumBlockSize);
        
    }
    void process (const dsp::ProcessContextReplacing<float>& context) noexcept
    {
        auto& outblock = context.getOutputBlock();
        helperbuf.setSize((int)outblock.getNumChannels(), (int)outblock.getNumSamples(), false, false, true);
        outblock.copyTo(helperbuf);
        graph.processBlock(helperbuf, midibuf);
        outblock.copyFrom(helperbuf);
    }
private:
    AudioBuffer<float> helperbuf;
    MidiBuffer midibuf;
};