CL_PitchShift.h

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/*
 * PROPRIETARY INFORMATION.  This software is proprietary to
 * Side Effects Software Inc., and is not to be reproduced,
 * transmitted, or disclosed in any way without written permission.
 *
 * NAME:        CHOP_ParaEq.h ( Channel Operator Library, C++)
 *
 * COMMENTS:
 *
 *     Shifts the pitch of an audio waveform
 */

#ifndef __CL_PitchShift__
#define __CL_PitchShift__

#include "CL_API.h"
#include "CL_SlidingWindow.h"
#include <SYS/SYS_Types.h>

class CL_API CL_PitchShift : public CL_SlidingWindow
{
public:

                 CL_PitchShift(int chunk, int oversample);
                ~CL_PitchShift() override;

    void         setPitchShift(fpreal shift);
    void         setOversample(int oversample);
    void         setChunkSize(int chunk);
    
    void         reset(fpreal val =0.0) override;
    
private:

    void         makeBlendCurve();
    void         pitchShiftUp();
    void         pitchShiftDown();
    
    void         doWindowOp(int nsamples,fpreal *dest) override;

    int          myOversample;
    fpreal       myPitchShift;
    fpreal      *mySingleSample;
    fpreal      *myBlendCurve;
    fpreal      *myData;
};

#endif