PhaserFilter.h

// PhaserFilter.h
// ofxPDSP
// Nicola Pisanti, MIT License, 2018

#ifndef PDSP_MODULE_PHASERFILTER_H_INCLUDED
#define PDSP_MODULE_PHASERFILTER_H_INCLUDED

#include "../../DSP/pdspCore.h"
#include "../../DSP/filters/APF4.h"
#include "../../DSP/utility/PitchToFreq.h"


namespace pdsp{
class PhaserFilter : public Patchable {

public:
    PhaserFilter();
    PhaserFilter(const PhaserFilter& other);
    PhaserFilter& operator=(const PhaserFilter& other);
    ~PhaserFilter();

    Patchable& in_signal();
    
    Patchable& in_pitch();
    
    Patchable& in_cutoff();

    Patchable& in_feedback();
    
    /*
    @brief Sets "spread" as selected input and returns this module ready to be patched. The value of the frequency of each pole is equal to the frequency of the pole before it plus spread multiplied by the base frequency. So at 0.0f all the pole have the same frequency, at 1.0f the poles form an harmonic series, etc etc
    */    
    Patchable& in_spread();

    
    Patchable& out_signal();

    void channels( size_t size );    

    Patchable& ch( size_t index );
    
    
    float meter_pitch() const;

    [[deprecated("operator[] deprecated, use the ch( int index ) method instead")]]    
    Patchable& operator[]( size_t index );
private:
    
    void patch();


    std::vector<APF4*> phasers;
    
    PitchToFreq p2f;
    PatchNode   fbcontrol;
    PatchNode   spreadcontrol;


};


}

#endif //PDSP_MODULE_PHASERFILTER_H_INCLUDED