spectrogram.h

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#pragma once

/*
________________________________________________________________________

 (C) dGB Beheer B.V.; (LICENSE) http://opendtect.org/OpendTect_license.txt
 Author:        K. Tingdahl
 Date:          9-3-1999
________________________________________________________________________

*/

#include "algomod.h"
#include "fourier.h"


mExpClass(Algo) Spectrogram 
{
public:
                        Spectrogram();
                        ~Spectrogram();

    bool                init();
    bool                setInputInfo( const ArrayNDInfo& ni);
    const ArrayNDInfo&  getInputInfo() const;

    bool                real2real() const               { return true; }
    bool                real2complex() const            { return false; }
    bool                complex2real() const            { return false; }
    bool                complex2complex() const         { return true; }
    bool                biDirectional() const           { return false; }
    bool                getDir() const                  { return true; }
    bool                setDir( bool fwd )              { return fwd; }

    bool                transform(const ArrayND<float>&,ArrayND<float>&);
    bool                transform(const ArrayND<float_complex>&,
                                  ArrayND<float_complex>& );
protected:

    bool                isPossible(int) const   { return true; }
    bool                isFast(int sz) const    { return fft_->isFast(sz); }

    ArrayND<float_complex>*     tempin_;
    ArrayND<float_complex>*     tempout_;
    Fourier::CC*                fft_;
};