HDFEOS2Array_RealField.h

// This file is part of the hdf4 data handler for the OPeNDAP data server.
// It retrieves the real field values.
//  Authors:   Kent Yang <myang6@hdfgroup.org>  Eunsoo Seo
// Copyright (c) The HDF Group
 
#ifdef USE_HDFEOS2_LIB
#ifndef HDFEOS2ARRAY_REALFIELD_H
#define HDFEOS2ARRAY_REALFIELD_H
 
#include <libdap/Array.h>
 
#include "HDFCFUtil.h"
#include "HdfEosDef.h"
 
 
#include "HDFEOS2EnumType.h"
 
 
class HDFEOS2Array_RealField:public libdap::Array
{
    public:
    HDFEOS2Array_RealField (int rank, const std::string & filename, bool isgeofile, const int sdfd, const int gridswathfd, const std::string & gridname, const std::string & swathname, const std::string & fieldname, SOType sotype, const std::string & n = "", libdap::BaseType * v = nullptr):
        libdap::Array (n, v),
        rank (rank),
        filename (filename),
        isgeofile(isgeofile),
        sdfd(sdfd),
        gsfd(gridswathfd),
        gridname (gridname), 
        swathname (swathname), 
        fieldname (fieldname),
        sotype(sotype) {
        }
        ~ HDFEOS2Array_RealField () override = default;
 
        // Standard way to pass the coordinates of the subsetted region from the client to the handlers
        int format_constraint (int *cor, int *step, int *edg);
 
        libdap::BaseType *ptr_duplicate () override
        {
            return new HDFEOS2Array_RealField (*this);
        }
 
        // Read the data.
        bool read () override;
 
    private:
 
        // Field array rank
        int rank;
 
        // HDF-EOS2 file name
        std::string filename;
 
        bool isgeofile;
 
        int sdfd;
        int gsfd;
 
        // HDF-EOS2 grid name
        std::string gridname;
 
        // HDF-EOS2 swath name
        std::string swathname; 
 
        // HDF-EOS2 field name
        std::string fieldname;
 
        // MODIS scale and offset type
        // Some MODIS files don't use the CF linear equation y = scale * x + offset,
        // the scaletype distinguishs products following different scale and offset rules. 
        SOType sotype;
 
        int write_dap_data_scale_comp( int32 gridid, int nelms, std::vector<int32> &offset32,std::vector<int32> &count32,std::vector<int32> &step32);
        int write_dap_data_disable_scale_comp( int32 gridid, int nelms, int32 *offset32,int32*count32,int32*step32);
        void release_mod1b_res(float*ref_scale,float*ref_offset,float*rad_scale,float*rad_offset);
        void close_fileid(const int gsfileid, const int sdfileid) const;
 
};
 
 
#endif
#endif