read_xrit.h

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/* read_xrit.h */

/* 
   Copyright (C) 2005 Fabrice Ducos <fabrice.ducos@icare.univ-lille1.fr>
   This file is part of the LibXRIT Library.

   The LibXRIT Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The LibXRIT Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the LibXRIT Library; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.

*/

#ifndef READ_XRIT_H
#define READ_XRIT_H

#include <stdint.h>
#include "libxrit_types.h"
#include "libmsg_sp_types.h"

#define XRIT_HEADERSIZE 16
#define XRIT_NROWS 3712
#define XRIT_NROWS_PER_SEG 464
#define XRIT_NCOLUMNS 3712
#define XRIT_HRV_NROWS 11136
#define XRIT_HRV_NCOLUMNS 5568
#define XRIT_MAXROW ( XRIT_NROWS - 1 )
#define XRIT_MAXCOLUMN ( XRIT_NCOLUMNS - 1 )
#define XRIT_SEGMENTSIZE XRIT_NROWS_PER_SEG*XRIT_NCOLUMNS

enum { XRIT_LOW_RES, XRIT_HIGH_RES };

/* structures for file header data */

typedef struct xrit_header_struct xrit_header_t;

struct xrit_header_struct {
  xrit_header_t *next;
  uint8_t header_type;
  uint16_t header_record_len;
  union {
    xrit_prim_header_t primary;
    xrit_image_struct_t image_struct;
    xrit_image_navig_t image_navig;
    xrit_data_func_t data_func;
    xrit_annotation_t annotation;
    xrit_time_stamp_t time_stamp;
    xrit_ancillary_text_t ancillary_text;
    xrit_key_header_t key_header;
    xrit_segment_id_t segment_id;
  } content;
};

typedef struct xrit_rows_infos_struct xrit_rows_infos_t;

struct xrit_rows_infos_struct {
  time_t time[XRIT_NROWS];
  uint8_t validity[XRIT_NROWS];
  uint8_t radiometric_validity[XRIT_NROWS];
  uint8_t geometric_validity[XRIT_NROWS];
};

enum { XRIT_NORTH_AT_TOP, XRIT_SOUTH_AT_TOP };

extern void xrit_orientation(int orientation);

extern int read_xrit(const char *filename, uint16_t *counts, int *isegment, xrit_header_t **xrit_header,
              xrit_rows_infos_t *rows_infos, MSG_Prologue *prologue, MSG_Epilogue *epilogue);

extern void free_xrit_header(xrit_header_t *xrit_header);

extern void print_xrit_header(xrit_header_t *xrit_header);

#endif

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