segyfiledata.h

Go to the documentation of this file.

#ifndef segyfiledata_h
#define segyfiledata_h

/*+
________________________________________________________________________

 (C) dGB Beheer B.V.; (LICENSE) http://opendtect.org/OpendTect_license.txt
 Author:        Bert
 Date:          Sep 2008
 RCS:           $Id$
________________________________________________________________________

-*/

#include "seismod.h"
#include "bufstring.h"
#include "bufstringset.h"
#include "iopar.h"
#include "manobjectset.h"
#include "coord.h"
#include "samplingdata.h"
#include "seisposkey.h"
#include "sortedtable.h"
#include "threadlock.h"
#include "od_iosfwd.h"

class ascostream;
class DataCharacteristics;
template <class T> class DataInterpreter;
class SEGYSeisTrcTranslator;
namespace Seis { class PosIndexer; }


namespace SEGY
{

mExpClass(Seis) FileDataSet
{
public:

    struct TrcIdx
    {
                        TrcIdx( int fnr=-1, od_int64 tnr=0 )
                            : filenr_(fnr), trcidx_(tnr)        {}
        bool            isValid() const         { return filenr_>=0; }
        void            toNextFile()            { filenr_++; trcidx_ = 0; }

        int             filenr_;
        od_int64        trcidx_;
    };

                        FileDataSet(const IOPar& iop, ascistream& );
                        FileDataSet(const IOPar& iop);
                        ~FileDataSet();

                        FileDataSet(const IOPar&,const char* filename,
                                od_stream_Pos start,
                                const DataCharacteristics& int32 );
                        FileDataSet(const FileDataSet& fd);

    void                save2DCoords(bool yn);

    bool                setOutputStream(od_ostream&);
    void                setAuxData(const Seis::GeomType&,
                                   const SEGYSeisTrcTranslator&);

    void                addFile(const char* fnm);
    bool                addTrace(int fileidx,const Seis::PosKey&,const Coord&,
                                 bool usable);

    const SamplingData<float>&  getSampling() const { return sampling_; }
    int                         getTrcSz() const { return trcsz_; }

                                //Auxdata
    int                         nrFiles() const;
    FixedString                 fileName(int) const;
    bool                        isEmpty() const         { return totalsz_<2; }
    od_int64                    size() const            { return totalsz_; }
    bool                        isRev0() const          { return isrev0_; }
    Seis::GeomType              geomType() const        { return geom_; }
    const IOPar&                segyPars() const        { return segypars_;}

                                //TraceData
    bool                        getDetails(od_int64,Seis::PosKey&,
                                           bool& usable) const;
    Coord                       get2DCoord(int trcnr) const;
    TrcIdx                      getFileIndex(od_int64) const;


    //bool              toNext(TrcIdx&,bool allownull=true,
                                //bool allownotusable=false) const;

    void                        setIndexer(Seis::PosIndexer* n);
    void                        getReport(IOPar&) const;
    void                        dump(od_ostream&) const;

    bool                        usePar(const IOPar& iop);
    void                        fillPar(IOPar& iop) const;

protected:

    struct              StoredData
    {
                        StoredData(const char* filename,od_stream_Pos start,
                                const DataCharacteristics& int32);
                        StoredData(od_ostream&);
                        ~StoredData();

        bool            getKey(od_int64, Seis::PosKey&, bool& ) const;
        bool            add(const Seis::PosKey&,bool);

    protected:

        DataInterpreter<int>*           int32di_;

        mutable Threads::Lock           lock_;
        od_istream*                     istrm_;
        od_stream_Pos                   start_;

        od_ostream*                     ostrm_;
    };

    bool                        readVersion1( ascistream& );
    bool                        readVersion1File( ascistream& );

                                //Auxdata
    IOPar                       segypars_;
    Seis::GeomType              geom_;
    bool                        isrev0_;
    SamplingData<float>         sampling_;
    int                         trcsz_;
    int                         nrstanzas_;
    BufferStringSet             filenames_;
    TypeSet<od_int64>           cumsizes_;
    od_int64                    totalsz_;
    int                         nrusable_;

                                //TraceData
    TypeSet<Seis::PosKey>       keys_;
    BoolTypeSet                 usable_;
    StoredData*                 storeddata_;
    SortedTable<int,Coord>*     coords_; //trcnr vs coord

    Seis::PosIndexer*           indexer_;
};

} // namespace


#endif