Flanger.h

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#pragma once
#include "HephAudioShared.h"
#include "ModulationEffect.h"
 
namespace HephAudio
{
    class HEPH_API Flanger : public ModulationEffect
    {
    public:
        using ModulationEffect::Process;
 
    protected:
        double constantDelay;
        
        double variableDelay;
 
        AudioBuffer pastSamples;
 
    public:
        Flanger();
 
        Flanger(double depth, double constantDelay, double variableDelay, const Oscillator& lfo);
 
        virtual ~Flanger() = default;
 
        virtual std::string Name() const override;
        virtual void ResetInternalState() override;
        virtual void Process(AudioBuffer& buffer, size_t startIndex, size_t frameCount) override;
 
        virtual double GetConstantDelay() const;
 
        virtual void SetConstantDelay(double constantDelay);
        
        virtual double GetVariableDelay() const;
 
        virtual void SetVariableDelay(double variableDelay);
 
    protected:
        virtual void ProcessST(const AudioBuffer& inputBuffer, AudioBuffer& outputBuffer, size_t startIndex, size_t frameCount) override;
 
        virtual size_t CalculatePastSamplesSize(const AudioBuffer& inputBuffer) const;
    };
}