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/*
File: file_tiff.h
Copyright (C) 2009 Christophe GRENIER <grenier@cgsecurity.org>
This software is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write the Free Software Foundation, Inc., 51
Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifdef __cplusplus
extern "C" {
#endif
#define TIFF_BIGENDIAN 0x4d4d
#define TIFF_LITTLEENDIAN 0x4949
#define TIFFTAG_IMAGEDESCRIPTION 270 /* info about image */
#define TIFFTAG_MAKE 271 /* scanner manufacturer name */
#define TIFFTAG_MODEL 272 /* scanner model name/number */
#define TIFFTAG_STRIPOFFSETS 273 /* offsets to data strips */
#define TIFFTAG_STRIPBYTECOUNTS 279 /* bytes counts for strips */
#define TIFFTAG_SUBIFD 330
#define TIFFTAG_JPEGIFOFFSET 513 /* !pointer to SOI marker */
#define TIFFTAG_JPEGIFBYTECOUNT 514 /* !JFIF stream length */
#define TIFFTAG_KODAKIFD 33424
#define TIFFTAG_EXIFIFD 34665
#define EXIFTAG_MAKERNOTE 37500 /* Manufacturer notes */
#define TIFFTAG_DNGPRIVATEDATA 50740 /* &manufacturer's private data */
typedef struct {
uint16_t tiff_magic; /* magic number (defines byte order) */
uint16_t tiff_version; /* TIFF version number */
uint32_t tiff_diroff; /* byte offset to first directory */
} TIFFHeader;
typedef struct {
uint16_t tdir_tag; /* see below */
uint16_t tdir_type; /* data type; see below */
uint32_t tdir_count; /* number of items; length in spec */
uint32_t tdir_offset; /* byte offset to field data */
} TIFFDirEntry;
struct ifd_header {
uint16_t nbr_fields;
TIFFDirEntry ifd;
} __attribute__ ((__packed__));
time_t get_date_from_tiff_header(const TIFFHeader *tiff, const unsigned int tiff_size);
const char *find_tag_from_tiff_header(const TIFFHeader *tiff, const unsigned int tiff_size, const unsigned int tag);
#ifdef __cplusplus
} /* closing brace for extern "C" */
#endif
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