BasicSynthProcessor.h

#pragma once
#include <JuceHeader.h>
#include "BasicSynth.h"

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

    void prepareToPlay (double sampleRate, int samplesPerBlock) override;
    void processBlock (juce::AudioBuffer<float>& buffer, juce::MidiBuffer& midiMessages) override;
    void releaseResources() override {}

    bool isBusesLayoutSupported (const BusesLayout& layouts) const override;

    juce::AudioProcessorEditor* createEditor() override;
    bool hasEditor() const override { return true; }

    const juce::String getName() const override { return "BasicSynth"; }
    bool acceptsMidi() const override { return true; }
    bool producesMidi() const override { return false; }
    bool isMidiEffect() const override { return false; }
    double getTailLengthSeconds() const override
    {
        return releaseParameter != nullptr ? (double) releaseParameter->get() : 0.5;
    }

    int getNumPrograms() override { return 1; }
    int getCurrentProgram() override { return 0; }
    void setCurrentProgram (int) override {}
    const juce::String getProgramName (int) override { return "Default"; }
    void changeProgramName (int, const juce::String&) override {}

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

    juce::AudioProcessorValueTreeState& getAPVTS() { return apvts; }

    juce::AudioVisualiserComponent waveformVisualiser { 2 };

private:

    juce::File midiLogFile;
    std::unique_ptr<juce::FileOutputStream> midiLogStream;
    bool loggingEnabled = false;
    double startTime = 0.0;

    juce::Synthesiser synth;
    juce::AudioProcessorValueTreeState apvts;

    juce::AudioParameterInt*   waveformParameter      = nullptr;
    juce::AudioParameterFloat* cutoffParameter        = nullptr;
    juce::AudioParameterBool*  filterEnabledParameter = nullptr;
    juce::AudioParameterFloat* attackParameter        = nullptr;
    juce::AudioParameterFloat* decayParameter         = nullptr;
    juce::AudioParameterFloat* sustainParameter       = nullptr;
    juce::AudioParameterFloat* releaseParameter       = nullptr;

    juce::AudioProcessorValueTreeState::ParameterLayout createParameterLayout();

    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (BasicSynthAudioProcessor)
};