GXF

gxfopen.h

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00001 /******************************************************************************
00002  * $Id: gxfopen.h 10645 2007-01-18 02:22:39Z warmerdam $
00003  *
00004  * Project:  GXF Reader
00005  * Purpose:  GXF-3 access function declarations.
00006  * Author:   Frank Warmerdam, warmerdam@pobox.com
00007  *
00008  ******************************************************************************
00009  * Copyright (c) 1998, Global Geomatics
00010  * Copyright (c) 1998, Frank Warmerdam
00011  *
00012  * Permission is hereby granted, free of charge, to any person obtaining a
00013  * copy of this software and associated documentation files (the "Software"),
00014  * to deal in the Software without restriction, including without limitation
00015  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
00016  * and/or sell copies of the Software, and to permit persons to whom the
00017  * Software is furnished to do so, subject to the following conditions:
00018  *
00019  * The above copyright notice and this permission notice shall be included
00020  * in all copies or substantial portions of the Software.
00021  *
00022  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
00023  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
00024  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
00025  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
00026  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
00027  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
00028  * DEALINGS IN THE SOFTWARE.
00029  ****************************************************************************/
00030 
00031 #ifndef _GXFOPEN_H_INCLUDED
00032 #define _GXFOPEN_H_INCLUDED
00033 
00040 /* -------------------------------------------------------------------- */
00041 /*      Include standard portability stuff.                             */
00042 /* -------------------------------------------------------------------- */
00043 #include "cpl_conv.h"
00044 #include "cpl_string.h"
00045 
00046 CPL_C_START
00047 
00048 typedef void *GXFHandle;
00049 
00050 GXFHandle GXFOpen( const char * pszFilename );
00051 
00052 CPLErr   GXFGetRawInfo( GXFHandle hGXF, int *pnXSize, int *pnYSize,
00053                         int *pnSense, double * pdfZMin, double * pdfZMax,
00054                         double * pdfDummy );
00055 CPLErr   GXFGetInfo( GXFHandle hGXF, int *pnXSize, int *pnYSize );
00056 
00057 CPLErr   GXFGetRawScanline( GXFHandle, int iScanline, double * padfLineBuf );
00058 CPLErr   GXFGetScanline( GXFHandle, int iScanline, double * padfLineBuf );
00059 
00060 char    **GXFGetMapProjection( GXFHandle );
00061 char    **GXFGetMapDatumTransform( GXFHandle );
00062 char    *GXFGetMapProjectionAsPROJ4( GXFHandle );
00063 char    *GXFGetMapProjectionAsOGCWKT( GXFHandle );
00064 
00065 CPLErr  GXFGetRawPosition( GXFHandle, double *, double *, double *, double *,
00066                            double * );
00067 CPLErr  GXFGetPosition( GXFHandle, double *, double *, double *, double *,
00068                         double * );
00069 
00070 CPLErr  GXFGetPROJ4Position( GXFHandle, double *, double *, double *, double *,
00071                              double * );
00072 
00073 void     GXFClose( GXFHandle hGXF );
00074 
00075 #define GXFS_LL_UP      -1
00076 #define GXFS_LL_RIGHT   1
00077 #define GXFS_UL_RIGHT   -2
00078 #define GXFS_UL_DOWN    2
00079 #define GXFS_UR_DOWN    -3
00080 #define GXFS_UR_LEFT    3
00081 #define GXFS_LR_LEFT    -4
00082 #define GXFS_LR_UP      4
00083 
00084 CPL_C_END
00085 
00086 /* -------------------------------------------------------------------- */
00087 /*      This is consider to be a private structure.                     */
00088 /* -------------------------------------------------------------------- */
00089 typedef struct {
00090     FILE        *fp;
00091 
00092     int         nRawXSize;
00093     int         nRawYSize;
00094     int         nSense;         /* GXFS_ codes */
00095     int         nGType;         /* 0 is uncompressed */
00096 
00097     double      dfXPixelSize;
00098     double      dfYPixelSize;
00099     double      dfRotation;
00100     double      dfXOrigin;      /* lower left corner */
00101     double      dfYOrigin;      /* lower left corner */
00102 
00103     char        szDummy[64];
00104     double      dfSetDummyTo;
00105 
00106     char        *pszTitle;
00107 
00108     double      dfTransformScale;
00109     double      dfTransformOffset;
00110     char        *pszTransformName;
00111 
00112     char        **papszMapProjection;
00113     char        **papszMapDatumTransform;
00114 
00115     char        *pszUnitName;
00116     double      dfUnitToMeter;
00117     
00118 
00119     double      dfZMaximum;
00120     double      dfZMinimum;
00121 
00122     long        *panRawLineOffset;
00123     
00124 } GXFInfo_t;
00125 
00126 #endif /* ndef _GXFOPEN_H_INCLUDED */

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