rmx-19/Source/PluginProcessor.h

#pragma once
#include <juce_audio_processors/juce_audio_processors.h>
#include "Params.h"
#include "PresetBank.h"
#include "SynthEngine.h"
#include <juce_dsp/juce_dsp.h>

class RMX19AudioProcessor : public juce::AudioProcessor
{
public:
    RMX19AudioProcessor();
    ~RMX19AudioProcessor() override;

    void prepareToPlay (double sampleRate, int samplesPerBlock) override;
    void releaseResources() override;

    void processBlock (juce::AudioBuffer<float>&, juce::MidiBuffer&) override;

    juce::AudioProcessorEditor* createEditor() override;
    bool hasEditor() const override;

    const juce::String getName() const override;
    bool acceptsMidi() const override           { return true; }
    bool producesMidi() const override          { return false; }
    double getTailLengthSeconds() const override { return prm::delaySyncMaxTime() + 2.0; }

    int getNumPrograms() override;
    int getCurrentProgram() override;
    void setCurrentProgram (int) override;
    const juce::String getProgramName (int) override;
    void changeProgramName (int, const juce::String&) override;

    void getStateInformation (juce::MemoryBlock&) override;
    void setStateInformation (const void*, int) override;

    juce::AudioProcessorValueTreeState apvts;

    PresetBank&         getBank()            { return bank; }
    SynthEngine&        getEngine()          { return engine; }
    int                 getPatchIndex() const noexcept { return patchIndex; }
    void                selectPatch (int i);
    int     getActiveVoices() const noexcept              { return engine.activeVoices(); }
    juce::uint32        getLastMidiTime() const noexcept  { return lastMidi; }
    float               getOutputLevel() const noexcept   { return outMeter; }
    float               getCpu() const noexcept           { return cpu; }

private:
    void processMidi (juce::MidiBuffer&, const VParams&);

    juce::AudioProcessorValueTreeState::ParameterLayout createParams();

    class FxEngine;
    std::unique_ptr<FxEngine> fx;

    class ArpEngine;
    std::unique_ptr<ArpEngine> arp;

    PresetBank  bank;
    SynthEngine engine;
    int patchIndex = 0;
    int lastPatchParam = 0;
    juce::uint32 lastMidi = 0;
    float cpu = 0.0f;
    float outMeter = 0.0f;   // smoothed output peak, written on the audio thread
    float dcL = 0.0f, dcR = 0.0f, dcPrevL = 0.0f, dcPrevR = 0.0f;
    juce::AudioBuffer<float> osBuf;   // internal 2x oversample target (HQ mode)

    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (RMX19AudioProcessor)
};