/********************************************************************** * *  geo_keyp.h - private interface for GeoTIFF geokey tag parsing * *     Written by: Niles D. Ritter * **********************************************************************/#ifndef __geo_keyp_h_#define __geo_keyp_h_#include <stdlib.h> /* for size_t *//* * This structure contains the internal program * representation of the key entry. */struct GeoKey {	int       gk_key;    /* GeoKey ID        */	size_t    gk_size;   /* data byte size   */	tagtype_t gk_type;   /* TIFF data type   */	long      gk_count;  /* number of values */	char*     gk_data;   /* pointer to data, or value */};typedef struct GeoKey GeoKey;/* *  This structure represents the file-organization of *  the key entry. Note that it assumes that short entries *  are aligned along 2-byte boundaries. */struct KeyEntry {	pinfo_t ent_key;        /* GeoKey ID            */	pinfo_t ent_location;   /* TIFF Tag ID or 0     */	pinfo_t ent_count;      /* GeoKey value count   */	pinfo_t ent_val_offset; /* value or tag offset  */};typedef struct KeyEntry KeyEntry;/* * This is the header of the CoordSystemInfoTag. The 'Version' *  will only change if the CoorSystemInfoTag structure changes; *  The Major Revision will be incremented whenever a new set of *  Keys is added or changed, while the Minor revision will be *  incremented when only the set of Key-values is increased. */struct KeyHeader{	pinfo_t hdr_version;      /* GeoTIFF Version          */	pinfo_t hdr_rev_major;    /* GeoKey Major Revision #  */	pinfo_t hdr_rev_minor;    /* GeoKey Minor Revision #  */	pinfo_t hdr_num_keys;     /* Number of GeoKeys        */};typedef struct KeyHeader KeyHeader;/* * This structure holds temporary data while reading or writing *  the tags. */struct TempKeyData {    char   *tk_asciiParams;    int     tk_asciiParamsLength;    int     tk_asciiParamsOffset;};typedef struct TempKeyData TempKeyData;struct gtiff {   tiff_t*    gt_tif;      /* TIFF file descriptor  */   TIFFMethod gt_methods;  /* TIFF i/o methods      */   int        gt_flags;    /* file flags            */      pinfo_t    gt_version;  /* GeoTIFF Version       */   pinfo_t    gt_rev_major;/* GeoKey Key Revision   */   pinfo_t    gt_rev_minor;/* GeoKey Code Revision  */      int        gt_num_keys; /* number of keys        */   GeoKey*    gt_keys;     /* array of keys         */   int*       gt_keyindex; /* index of a key, if set*/   int        gt_keymin;   /* smallest key set      */   int        gt_keymax;   /* largest key set       */      pinfo_t*   gt_short;    /* array of SHORT vals   */   double*    gt_double;   /* array of DOUBLE vals  */   int        gt_nshorts;  /* number of SHORT vals  */   int        gt_ndoubles; /* number of DOUBLE vals */};  typedef enum {	FLAG_FILE_OPEN=1,	FLAG_FILE_MODIFIED=2} gtiff_flags;#define MAX_KEYINDEX 65535   /* largest possible key    */#define MAX_KEYS 100         /* maximum keys in a file  */#define MAX_VALUES 1000      /* maximum values in a tag */#endif /* __geo_keyp_h_ */