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Diffstat (limited to '')
| -rw-r--r-- | plug-ins/file-fits/fits-io.h | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/plug-ins/file-fits/fits-io.h b/plug-ins/file-fits/fits-io.h new file mode 100644 index 0000000..8732db1 --- /dev/null +++ b/plug-ins/file-fits/fits-io.h @@ -0,0 +1,199 @@ +/******************************************************************************/ +/* Peter Kirchgessner */ +/* e-mail: pkirchg@aol.com */ +/* WWW : http://members.aol.com/pkirchg */ +/******************************************************************************/ +/* #BEG-HDR */ +/* */ +/* Package : FITS reading/writing library */ +/* Modul-Name : fitsrw.h */ +/* Description : Include file for FITS-r/w-library */ +/* Function(s) : */ +/* Author : P. Kirchgessner */ +/* Date of Gen. : 12-Apr-97 */ +/* Last modified : 17-May-97 */ +/* Version : 0.10 */ +/* Compiler Opt. : */ +/* Changes : */ +/* */ +/* #END-HDR */ +/******************************************************************************/ + +#ifndef __FITS_IO_H__ +#define __FITS_IO_H__ + +#define FITS_CARD_SIZE 80 +#define FITS_RECORD_SIZE 2880 +#define FITS_MAX_AXIS 999 + +#define FITS_NADD_CARDS 128 + +/* Data representations */ + +typedef guchar FitsBitpix8; +typedef gint16 FitsBitpix16; +typedef gint32 FitsBitpix32; +typedef float FitsBitpixM32; +typedef double FitsBitpixM64; +typedef gint32 FitsBool; +typedef gint32 FitsLong; +typedef double FitsDouble; +typedef char FitsString[FITS_CARD_SIZE]; + +typedef enum +{ + FITS_DATA_TYPE_BITPIX_8, + FITS_DATA_TYPE_BITPIX_16, + FITS_DATA_TYPE_BITPIX_32, + FITS_DATA_TYPE_BITPIX_M32, + FITS_DATA_TYPE_BITPIX_M64, + FITS_DATA_TYPE_FBOOL, + FITS_DATA_TYPE_FLONG, + FITS_DATA_TYPE_FDOUBLE, + FITS_DATA_TYPE_FSTRING +} FitsDataType; + +typedef union +{ + FitsBitpix8 bitpix8; + FitsBitpix16 bitpix16; + FitsBitpix32 bitpix32; + FitsBitpixM32 bitpixm32; + FitsBitpixM64 bitpixm64; + FitsBool fbool; + FitsLong flong; + FitsDouble fdouble; + FitsString fstring; +} FitsData; + + +/* How to transform FITS pixel values */ + +typedef struct _FitsPixTransform FitsPixTransform; + +struct _FitsPixTransform +{ + gdouble pixmin, pixmax; /* Pixel values [pixmin,pixmax] should be mapped */ + gdouble datamin, datamax; /* to [datamin,datamax] */ + gdouble replacement; /* datavalue to use for blank or NaN pixels */ + gchar dsttyp; /* Destination typ ('c' = char) */ +}; + + +/* Record list */ + +typedef struct _FitsRecordList FitsRecordList; + +struct _FitsRecordList +{ + gchar data[FITS_RECORD_SIZE]; + FitsRecordList *next_record; +}; + + +/* Header and Data Unit List */ + +typedef struct _FitsHduList FitsHduList; + +struct _FitsHduList +{ + glong header_offset; /* Offset of header in the file */ + glong data_offset; /* Offset of data in the file */ + glong data_size; /* Size of data in the HDU (including pad)*/ + glong udata_size; /* Size of used data in the HDU (excl. pad) */ + gint bpp; /* Bytes per pixel */ + gint numpic; /* Number of interpretable images in HDU */ + gint naddcards; /* Number of additional cards */ + gchar addcards[FITS_NADD_CARDS][FITS_CARD_SIZE]; + struct + { + gboolean nan_value; /* NaN's found in data ? */ + gboolean blank_value; /* Blanks found in data ? */ + /* Flags specifying if some cards are used */ + gchar blank; /* The corresponding data below is only */ + gchar datamin; /* valid, if the flag is set. */ + gchar datamax; + gchar simple; /* This indicates a simple HDU */ + gchar xtension; /* This indicates an extension */ + gchar gcount; + gchar pcount; + gchar bzero; + gchar bscale; + gchar groups; + gchar extend; + } used; + gdouble pixmin, pixmax; /* Minimum/Maximum pixel values */ + /* Some decoded data of the HDU: */ + gint naxis; /* Number of axes */ + gint naxisn[FITS_MAX_AXIS]; /* Sizes of axes (NAXIS1 --> naxisn[0]) */ + gint bitpix; /* Data representation (8,16,32,-16,-32) */ + /* When using the following data, */ + /* the used-flags must be checked before. */ + glong blank; /* Blank value */ + gdouble datamin, datamax; /* Minimum/Maximum physical data values */ + gchar xtension[FITS_CARD_SIZE];/* Type of extension */ + glong gcount, pcount; /* Used by XTENSION */ + gdouble bzero, bscale; /* Transformation values */ + gint groups; /* Random groups indicator */ + gint extend; /* Extend flag */ + + FitsRecordList *header_record_list; /* Header records read in */ + + FitsHduList *next_hdu; +}; + + +typedef struct _FitsFile FitsFile; + +struct _FitsFile +{ + FILE *fp; /* File pointer to fits file */ + gchar openmode; /* Mode the file was opened (0, 'r', 'w') */ + + gint n_hdu; /* Number of HDUs in file */ + gint n_pic; /* Total number of interpretable pictures */ + gboolean nan_used; /* NaN's used in the file ? */ + gboolean blank_used; /* Blank's used in the file ? */ + + FitsHduList *hdu_list; /* Header and Data Unit List */ +}; + + +/* User callable functions of the FITS-library */ + +FitsFile * fits_open (const gchar *filename, + const gchar *openmode); +void fits_close (FitsFile *ff); +FitsHduList * fits_add_hdu (FitsFile *ff); +gint fits_add_card (FitsHduList *hdulist, + const gchar *card); +gint fits_write_header (FitsFile *ff, + FitsHduList *hdulist); +FitsHduList * fits_image_info (FitsFile *ff, + gint picind, + gint *hdupicind); +FitsHduList * fits_seek_image (FitsFile *ff, + gint picind); +void fits_print_header (FitsHduList *hdr); +FitsData * fits_decode_card (const gchar *card, + FitsDataType data_type); +gchar * fits_search_card (FitsRecordList *rl, + gchar *keyword); +gint fits_read_pixel (FitsFile *ff, + FitsHduList *hdulist, + gint npix, + FitsPixTransform *trans, + void *buf); + +gchar * fits_get_error (void); + + +/* Demo functions */ + +#define FITS_NO_DEMO +gint fits_to_pgmraw (gchar *fitsfile, + gchar *pgmfile); +gint pgmraw_to_fits (gchar *pgmfile, + gchar *fitsfile); + +#endif /* __FITS_IO_H__ */ |