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#define MAX_COMPRESS_DIM 6
#define COMPRESS_NULL_VALUE -2147483647
typedef struct {
char zcmptype[12]; /* compression type string */
int compress_type; /* type of compression algorithm */
int bitpix; /* FITS data type of image (BITPIX) */
int ndim; /* dimension of image */
long naxis[MAX_COMPRESS_DIM]; /* length of each axis */
int cn_compressed; /* column number for COMPRESSED_DATA column */
int cn_uncompressed; /* column number for UNCOMPRESSED_DATA column */
int cn_zscale; /* column number for CSCALE column */
int cn_zzero; /* column number for CZERO column */
int cn_zblank; /* column number for the CBLANK column */
double zscale; /* scaling value, if keyword and not column */
double zzero; /* zero pt, if keyword and not column */
int zblank; /* value for null pixels, if not a column */
long nrows; /* number of rows in table */
int ncols; /* number of columns in table */
int rice_blocksize; /* first compression parameter */
int rice_nbits; /* second compression parameter */
long tilesize[MAX_COMPRESS_DIM]; /* size of compression tiles */
long maxtilelen; /* max number of pixels in each image tile */
long maxelem; /* maximum length of variable length arrays */
} CompressImageInfo;
/* image compression routines */
static int imcomp_get_image_params(fitsfile *infptr, CompressImageInfo *otb,
int *status);
static int imcomp_init_table(fitsfile *outfptr,
CompressImageInfo *otb, int *status);
static int imcomp_calc_max_elem (int nx, int blocksize);
static int imcomp_copy_imheader(fitsfile *infptr, fitsfile *outfptr,
int *status);
static int imcomp_img_to_tbl_special (char *card);
static int imcomp_compress_image (fitsfile *infptr, fitsfile *outfptr,
CompressImageInfo *otb, int *status);
/* image decompression routines */
int fits_read_compressed_img_plane(fitsfile *fptr, int datatype,
int bytesperpixel, long nplane, long *firstcoord, long *lastcoord,
long *inc, long *naxes, int nullcheck, void *nullval,
void *array, char *nullarray, int *anynul, int *status);
static int imcomp_get_table_params(fitsfile *infptr, CompressImageInfo *itb,
int *status);
static int imcomp_copy_tblheader(fitsfile *infptr, fitsfile *outfptr,
int *status);
static int imcomp_tbl_to_img_special (char *keyname);
static int imcomp_decompress_tile (fitsfile *infptr, CompressImageInfo *itb,
int nrow, int tilesize, int datatype, int nullcheck,
void *nulval, void *buffer, char *bnullarray, int *anynul,
int *status);
static int imcomp_copy_overlap (char *tile, int datatype, int ndim,
long *tfpixel, long *tlpixel, char *bnullarray, char *image,
long *fpixel, long *lpixel, int nullcheck, char *nullarray,
int *status);
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