DSP.h

#ifndef QDSP_H
#define QDSP_H

#include <QObject>
#include <math.h>

class FFTPrivate;

namespace DSP {
    const float  PI=3.14159265358979f;
    const float RADIANT = PI/180;

    class FFT : QObject {
        Q_OBJECT
        Q_DECLARE_PRIVATE(FFT)
        Q_CLASSINFO("Author", "Sebastiano Galazzo")
        Q_CLASSINFO("Email", "sebastiano.galazzo@gmail.com")

    public:
        explicit FFT(const long length, QObject *parent = 0);

        explicit FFT(const long width, const long height, QObject *parent = 0);

        virtual ~FFT();

        Q_INVOKABLE void compute(const float source [], float result []);

        Q_INVOKABLE void inverse(const float source [], float result []);

        Q_INVOKABLE void rescale(float source []) const;

        Q_INVOKABLE void compute2d(const float source [], float result []);

        Q_INVOKABLE void inverse2d(const float source [], float result []);

    protected:

        FFTPrivate* const d_ptr;

    private:
          long width;

        long height;

    };
}

#endif // QDSP_H