geotiffdispatch.h

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#ifndef _GEOTIFFDISPATCH_H
#define _GEOTIFFDISPATCH_H
 
#include "config.h"
#include "ncdispatch.h"
#include "nc4internal.h"
#include "nep.h"
 
#ifdef HAVE_GEOTIFF
#include <geotiff/geotiff.h>
#include <geotiff/geo_normalize.h>
#endif
 
#define NC_FORMATX_NC_GEOTIFF NC_FORMATX_UDF1
 
#define TIFF_MAGIC_LE 0x4949  /* Little-endian "II" */
#define TIFF_MAGIC_BE 0x4D4D  /* Big-endian "MM" */
 
#define TIFF_VERSION_CLASSIC 42
#define TIFF_VERSION_BIGTIFF 43
 
#define TIFF_HEADER_SIZE 8
 
typedef struct NC_VAR_GEOTIFF_INFO
{
    int band_num;
    int geotiff_data_type;
    double *coord_data; /* non-NULL for coordinate variables (lat/lon/x/y) */
    size_t coord_len;   /* length of coord_data array */
} NC_VAR_GEOTIFF_INFO_T;
 
#define NC_GEOTIFF_CRS_UNKNOWN 0
#define NC_GEOTIFF_CRS_GEOGRAPHIC 1
#define NC_GEOTIFF_CRS_PROJECTED 2
 
typedef struct nc_geotiff_crs_info
{
    int crs_type; /* geographic or projected */
    int epsg_code;
    int ct_projection; /* GTIFDefn.CTProjection value (projected CRS only) */
    int raster_pixel_is_point; /* 1 if GTRasterTypeGeoKey=RasterPixelIsPoint, 0 if area */
    char crs_name[NC_MAX_NAME + 1];
    double semi_major_axis;
    double inverse_flattening;
    double false_easting;
    double false_northing;
    double scale_factor;
    double central_meridian;
    double latitude_of_origin;
    double standard_parallel_1; /* first standard parallel (LCC, Albers) */
    double standard_parallel_2; /* second standard parallel (LCC 2SP, Albers) */
} NC_GEOTIFF_CRS_INFO_T;
 
typedef struct NC_GEOTIFF_FILE_INFO
{
    void *tiff_handle;
    void *gtif_handle;
    char *path;
    int is_little_endian;
    int is_tiled;
    uint32_t tile_width;
    uint32_t tile_height;
    uint32_t rows_per_strip;
    uint16_t planar_config;
    uint32_t image_width;
    uint32_t image_height;
    uint16_t samples_per_pixel;
    NC_GEOTIFF_CRS_INFO_T crs_info; /* CRS metadata */
} NC_GEOTIFF_FILE_INFO_T;
 
#if defined(__cplusplus)
extern "C" {
#endif
 
    extern int
    NC_GEOTIFF_open(const char *path, int mode, int basepe, size_t *chunksizehintp,
                    void *parameters, const NC_Dispatch *, int);
 
    extern int
    NC_GEOTIFF_abort(int ncid);
 
    extern int
    NC_GEOTIFF_close(int ncid, void *ignore);
 
    extern int
    NC_GEOTIFF_inq_format(int ncid, int *formatp);
 
    extern int
    NC_GEOTIFF_inq_format_extended(int ncid, int *formatp, int *modep);
 
    extern int
    NC_GEOTIFF_get_vara(int ncid, int varid, const size_t *start, const size_t *count,
                        void *value, nc_type);
 
    extern NC_Dispatch*
    NC_GEOTIFF_initialize(void);
 
    extern int
    NC_GEOTIFF_finalize(void);
 
#define GEOTIFF_INIT_OK() (NC_GEOTIFF_initialize() != NULL)
#define GEOTIFF_INIT_AND_ASSIGN(ret) do { \
        NC_Dispatch *_d = NC_GEOTIFF_initialize(); \
        (ret) = (_d != NULL) ? NC_NOERR : NC_ENOTNC; \
    } while(0)
 
    extern int
    NC_GEOTIFF_detect_format(const char *path, int *is_geotiff);
 
    extern int
    NC_GEOTIFF_extract_metadata(NC_FILE_INFO_T *h5, NC_GEOTIFF_FILE_INFO_T *geotiff_info);
 
#ifdef HAVE_GEOTIFF
    extern int
    extract_crs_parameters(GTIF *gtif, NC_GEOTIFF_CRS_INFO_T *crs_info);
 
    extern int
    validate_crs_completeness(const NC_GEOTIFF_CRS_INFO_T *crs_info);
#endif
 
    extern const NC_Dispatch *GEOTIFF_dispatch_table;
 
#if defined(__cplusplus)
}
#endif
 
#endif /*_GEOTIFFDISPATCH_H */