CL/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.
 *
 * Produced by:
 *      Mark Alexander
 *      Side Effects Software Inc
 *      477 Richmond Street West
 *      Toronto, Ontario
 *      Canada   M5V 3E7
 *      416-504-9876
 *
 * 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"

class CL_API CL_PitchShift : public CL_SlidingWindow
{
public:

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

    void         setPitchShift(float shift);
    void         setOversample(int oversample);
    void         setChunkSize(int chunk);
    
    virtual void reset(float val =0.0F);
    
private:

    void         makeBlendCurve();
    void         pitchShiftUp();
    void         pitchShiftDown();
    
    virtual void doWindowOp(int nsamples,float *dest);

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

#endif 

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