Spectral.h

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//
// Spectral.h -- UnitGenerator for going to/from the spectral domain
// These classes use the CSL 5 FFT wrapper for FFTs.
//
// See the copyright notice and acknowledgment of authors in the file COPYRIGHT
//

#ifndef CSL_Spectral_H
#define CSL_Spectral_H

#include "CSL_Core.h"
#include "FFT_Wrapper.h"

namespace csl {


class FFT : public Effect {

public:
    FFT(UnitGenerator & in, int size = CGestalt::blockSize(), CSL_FFTType type = CSL_FFT_COMPLEX);
    ~FFT();
    void nextBuffer(Buffer & outputBuffer) throw (CException);  

    int fftSize() { return mFFTSize; }  

    bool mOverwriteOutput;              

protected:  
    int mFFTSize;                       
    FFTWrapper mWrapper;                
    Buffer mInBuf;                      
    SampleBuffer mWindowBuffer;             
};


class IFFT : public UnitGenerator {

public:
    IFFT(int size = CGestalt::blockSize(), CSL_FFTType type = CSL_FFT_COMPLEX);
    ~IFFT();
    int fftSize() { return mFFTSize; }
    void binValue(int binNumber, float * outRealPart, float * outComplexPart);
    void binValueMagPhase(int binNumber, float * outMag, float * outPhase);
        
                                        // set the values in the specified bin
    void setBin(int binNumber, float realPart, float imagPart);
    void setBins(float * real, float * imag);
    void setBins(SampleComplexVector cmplxSpectrum);
    void setBins(SampleBuffer cmplxSpectrum);
    void setBins(int lower, int upper, float* real, float* imag);
    void setBinMagPhase(int binNumber, float mag, float phase);
    void setBinsMagPhase(float* mags, float* phases);
    
    void nextBuffer(Buffer & outputBuffer) throw (CException);

protected:  
    int mFFTSize;                       
    FFTWrapper mWrapper;                
    Buffer mInBuf;                      
    SampleComplexPtr mSpectrum;         
};

}

#endif

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