freqfilterattrib.h

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#ifndef freqfilterattrib_h
#define freqfilterattrib_h

/*+
________________________________________________________________________

 (C) dGB Beheer B.V.; (LICENSE) http://opendtect.org/OpendTect_license.txt
 Author:        Nanne Hemstra
 Date:          February 2003
 RCS:           $Id$
________________________________________________________________________

-*/


#include "attributesmod.h"
#include "attribprovider.h"
#include "arrayndalgo.h"
#include "arrayndimpl.h"
#include <complex>


namespace Attrib
{

mExpClass(Attributes) FreqFilter : public Provider
{ mODTextTranslationClass(FreqFilter);
public:
    static void         initClass();
                        FreqFilter(Desc&);

    static const char*  attribName()            { return "FreqFilter"; }
    static const char*  filtertypeStr()         { return "type"; }
    static const char*  minfreqStr()            { return "minfreq"; }
    static const char*  maxfreqStr()            { return "maxfreq"; }
    static const char*  nrpolesStr()            { return "nrpoles"; }
    static const char*  isfftfilterStr()        { return "isfftfilter"; }
    static const char*  isfreqtaperStr()        { return "isfreqtaper"; }
    static const char*  windowStr()             { return "window"; }
    static const char*  fwindowStr()            { return "fwindow"; }
    static const char*  paramvalStr()           { return "paramval"; }
    static const char*  freqf1Str()             { return "highfreqparamval"; }
    static const char*  freqf4Str()             { return "lowfreqparamval"; }
    static const char*  filterTypeNamesStr(int);

protected:
                        ~FreqFilter();
    static Provider*    createInstance(Desc&);
    static void         updateDesc(Desc&);

    bool                getInputOutput(int input,TypeSet<int>& res) const;
    bool                getInputData(const BinID&, int idx);
    bool                computeData(const DataHolder&,const BinID& relpos,
                                    int t0,int nrsamples,int threadid) const;
    void                butterWorthFilter(const DataHolder&, int, int);
    void                fftFilter(const DataHolder&, int, int);

    void                setSz(int sz);
    
    const Interval<int>*        desZSampMargin(int input,int output) const;

    int                         filtertype_;
    float                       minfreq_;
    float                       maxfreq_;
    int                         nrpoles_;
    bool                        isfftfilter_;
    int                         fftsz_;

    ArrayNDWindow*              window_;
    BufferString                windowtype_;
    float                       variable_;
    float                       freqf1_;
    float                       freqf4_;

    Interval<int>               zmargin_;

    Array1DImpl<float_complex>  signal_;
    
    const DataHolder*           redata_;
    const DataHolder*           imdata_;

    int                         realidx_;
    int                         imagidx_;
};

}; // namespace Attrib

#endif