1                 : /******************************************************************************
       2                 :  *
       3                 :  * Purpose: Support for reading and manipulating PCIDSK Ephemeris Segments
       4                 :  * 
       5                 :  ******************************************************************************
       6                 :  * Copyright (c) 2009
       7                 :  * PCI Geomatics, 50 West Wilmot Street, Richmond Hill, Ont, Canada
       8                 :  *
       9                 :  * Permission is hereby granted, free of charge, to any person obtaining a
      10                 :  * copy of this software and associated documentation files (the "Software"),
      11                 :  * to deal in the Software without restriction, including without limitation
      12                 :  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
      13                 :  * and/or sell copies of the Software, and to permit persons to whom the
      14                 :  * Software is furnished to do so, subject to the following conditions:
      15                 :  *
      16                 :  * The above copyright notice and this permission notice shall be included
      17                 :  * in all copies or substantial portions of the Software.
      18                 :  *
      19                 :  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
      20                 :  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
      21                 :  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
      22                 :  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
      23                 :  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
      24                 :  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
      25                 :  * DEALINGS IN THE SOFTWARE.
      26                 :  ****************************************************************************/
      27                 : #ifndef __INCLUDE_PCIDSK_SEGMENT_PCIDSKEPHEMERIS_SEG_H
      28                 : #define __INCLUDE_PCIDSK_SEGMENT_PCIDSKEPHEMERIS_SEG_H
      29                 :  
      30                 : #include "pcidsk_ephemeris.h"
      31                 : #include "segment/cpcidsksegment.h"
      32                 : 
      33                 : namespace PCIDSK {
      34                 :     class PCIDSKFile;
      35                 : 
      36                 :     class CPCIDSKEphemerisSegment : public PCIDSKEphemerisSegment,
      37                 :                                     public CPCIDSKSegment
      38                 :     {
      39                 :     public:
      40                 :         CPCIDSKEphemerisSegment(PCIDSKFile *file, int segment,const char *segment_pointer,bool bLoad=true);
      41                 :         ~CPCIDSKEphemerisSegment();
      42                 : 
      43               0 :         const EphemerisSeg_t& GetEphemeris() const
      44                 :         {
      45               0 :             return *mpoEphemeris;
      46                 :         };
      47               0 :         void SetEphemeris(const EphemerisSeg_t& oEph)
      48                 :         {
      49               0 :             if(mpoEphemeris)
      50                 :             {
      51               0 :                 delete mpoEphemeris;
      52                 :             }
      53               0 :             mpoEphemeris = new EphemerisSeg_t(oEph);
      54               0 :             mbModified = true;
      55               0 :         };
      56                 : 
      57                 :         //synchronize the segment on disk.
      58                 :         void Synchronize();
      59                 :     private:
      60                 :         
      61                 :         // Helper housekeeping functions
      62                 :         void Load();
      63                 :         void Write();
      64                 : 
      65                 :         EphemerisSeg_t* mpoEphemeris;
      66                 :     //functions to read/write binary information
      67                 :     protected:
      68                 :         // The raw segment data
      69                 :         PCIDSKBuffer seg_data;
      70                 :         bool loaded_;
      71                 :         bool mbModified;
      72                 :         void ReadAvhrrEphemerisSegment(int, 
      73                 :                                        EphemerisSeg_t *);
      74                 :         void ReadAvhrrScanlineRecord(int nPos,
      75                 :                                      AvhrrLine_t *psScanlineRecord);
      76                 :         int  ReadAvhrrInt32(unsigned char* pbyBuf);
      77                 :         void WriteAvhrrEphemerisSegment(int , EphemerisSeg_t *);
      78                 :         void WriteAvhrrScanlineRecord(AvhrrLine_t *psScanlineRecord,
      79                 :                                       int nPos);
      80                 :         void WriteAvhrrInt32(int nValue, unsigned char* pbyBuf);
      81                 :         EphemerisSeg_t *BinaryToEphemeris( int nStartBlock );
      82                 :         void EphemerisToBinary( EphemerisSeg_t *, int );
      83                 :         double ConvertDeg(double degree, int mode);  
      84                 :     };
      85                 : }
      86                 : 
      87                 : #endif // __INCLUDE_PCIDSK_SEGMENT_PCIDSKEPHEMERIS_SEG_H