#pragma once

#include "../FXProcessor.h"

namespace serum
{

// ===========================================================================
// Phaser — cascade of four first-order allpass stages with an LFO-modulated
// coefficient and feedback. p[0]=rate, p[1]=depth, p[2]=feedback, p[3]=stages.
// ===========================================================================
class PhaserUnit : public FXUnit
{
public:
    void prepare (double sampleRate, int maxBlockSize) override;
    void reset() override;
    void process (float* l, float* r, int numSamples, const float p[4]) override;

private:
    double sr = 44100.0;
    double lfoPhase = 0.0;
    float  xL[6] {}, xR[6] {}, yL[6] {}, yR[6] {};
};

} // namespace serum