R.h

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#include <grass/config.h>
#include <grass/gis.h>
 
#include <gdal.h>
 
#define XDR_FLOAT_NBYTES  4
#define XDR_DOUBLE_NBYTES 8
#define NULL_ROWS_INMEM   8
 
/* if short is 16 bits, then
 *       short will allow 32767 cols
 *       unsigned short will allow 65536 cols
 * use int if you need more columns (but this will take more memory).
 *
 */
typedef int COLUMN_MAPPING;
 
struct GDAL_link {
    char *filename;
    int band_num;
    DCELL null_val;
    int hflip;
    int vflip;
    GDALDatasetH data;
    GDALRasterBandH band;
    GDALDataType type;
};
 
extern CPLErr Rast_gdal_raster_IO(GDALRasterBandH, GDALRWFlag, int, int, int,
                                  int, void *, int, int, GDALDataType, int,
                                  int);
 
struct tileinfo /* Information for tiles */
{
    char *name;              /* Name of open file            */
    char *mapset;            /* Mapset of open file          */
    struct Cell_head cellhd; /* Cell header                  */
    struct ilist *clist;     /* columns inside current region */
};
 
struct R_vrt {
    int tilecount;
    struct tileinfo *tileinfo;
    struct ilist *tlist;
};
 
struct fileinfo /* Information for opened cell files */
{
    int open_mode;           /* see defines below            */
    struct Cell_head cellhd; /* Cell header                  */
    struct Reclass reclass;  /* Table reclass                */
    struct Cell_stats statf; /* Cell stats                   */
    struct Range range;      /* Range structure              */
    struct FPRange fp_range; /* float Range structure        */
    int want_histogram;
    int reclass_flag;        /* Automatic reclass flag       */
    off_t *row_ptr;          /* File row addresses           */
    COLUMN_MAPPING *col_map; /* Data to window col mapping   */
    /* Range of native columns of GDAL-linked maps needed with
     * the current region. */
    COLUMN_MAPPING gdal_min_col;
    COLUMN_MAPPING gdal_max_col;
    double C1, C2;            /* Data to window row constants */
    int cur_row;              /* Current data row in memory   */
    int null_cur_row;         /* Current null row in memory   */
    int cur_nbytes;           /* nbytes per cell for current row */
    unsigned char *data;      /* Decompressed data buffer     */
    int null_fd;              /* Null bitmap fd               */
    unsigned char *null_bits; /* Null bitmap buffer           */
    int nbytes;               /* bytes per cell               */
    RASTER_MAP_TYPE map_type; /* type: int, float or double map */
    char *temp_name;          /* Temporary name for NEW files */
    char *null_temp_name;     /* Temporary name for NEW NULL files */
    int null_file_exists;     /* for existing raster maps     */
    char *name;               /* Name of open file            */
    char *mapset;             /* Mapset of open file          */
    int io_error;             /* io error warning given       */
    struct Quant quant;
    struct GDAL_link *gdal;
    int data_fd;         /* Raster data fd               */
    off_t *null_row_ptr; /* Null file row addresses      */
    struct R_vrt *vrt;
};
 
struct R__ /*  Structure of library globals */
{
    RASTER_MAP_TYPE fp_type; /* type for writing floating maps */
    int mask_fd;             /* File descriptor for automatic mask   */
    int auto_mask;           /* Flag denoting automatic masking      */
    int want_histogram;
    int nbytes;
    int compression_type;
    int compress_nulls;
    int window_set;             /* Flag: window set?                    */
    int split_window;           /* Separate windows for input and output */
    struct Cell_head rd_window; /* Window used for input        */
    struct Cell_head wr_window; /* Window used for output       */
 
    int fileinfo_count;
    struct fileinfo *fileinfo;
};
 
extern struct R__ R__; /* allocated in init */
 
#define OPEN_OLD              1
#define OPEN_NEW_COMPRESSED   2
#define OPEN_NEW_UNCOMPRESSED 3