1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
|
/*! \file exif-utils.h
* \brief EXIF data manipulation functions and types
*/
/*
* Copyright (c) 2001 Lutz Mueller <lutz@users.sourceforge.net>
*
* This 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 of the License, or (at your option) any later version.
*
* This 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 this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA.
*/
#ifndef __EXIF_UTILS_H__
#define __EXIF_UTILS_H__
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#include <libexif/exif-byte-order.h>
#include <libexif/exif-format.h>
#include <libexif/_stdint.h>
/* If these definitions don't work for you, please let us fix the
* macro generating _stdint.h */
/*! EXIF Unsigned Byte data type */
typedef unsigned char ExifByte; /* 1 byte */
/*! EXIF Signed Byte data type */
typedef signed char ExifSByte; /* 1 byte */
/*! EXIF Text String data type */
typedef char * ExifAscii;
/*! EXIF Unsigned Short data type */
typedef uint16_t ExifShort; /* 2 bytes */
/*! EXIF Signed Short data type */
typedef int16_t ExifSShort; /* 2 bytes */
/*! EXIF Unsigned Long data type */
typedef uint32_t ExifLong; /* 4 bytes */
/*! EXIF Signed Long data type */
typedef int32_t ExifSLong; /* 4 bytes */
/*! EXIF Unsigned Rational data type */
typedef struct {ExifLong numerator; ExifLong denominator;} ExifRational;
typedef char ExifUndefined; /* 1 byte */
/*! EXIF Signed Rational data type */
typedef struct {ExifSLong numerator; ExifSLong denominator;} ExifSRational;
/*! Retrieve an #ExifShort value from memory.
*
* \param[in] b pointer to raw EXIF value in memory
* \param[in] order byte order of raw value
* \return value
*/
ExifShort exif_get_short (const unsigned char *b, ExifByteOrder order);
/*! Retrieve an #ExifSShort value from memory.
*
* \param[in] b pointer to raw EXIF value in memory
* \param[in] order byte order of raw value
* \return value
*/
ExifSShort exif_get_sshort (const unsigned char *b, ExifByteOrder order);
/*! Retrieve an #ExifLong value from memory.
*
* \param[in] b pointer to raw EXIF value in memory
* \param[in] order byte order of raw value
* \return value
*/
ExifLong exif_get_long (const unsigned char *b, ExifByteOrder order);
/*! Retrieve an #ExifSLong value from memory.
*
* \param[in] b pointer to raw EXIF value in memory
* \param[in] order byte order of raw value
* \return value
*/
ExifSLong exif_get_slong (const unsigned char *b, ExifByteOrder order);
/*! Retrieve an #ExifRational value from memory.
*
* \param[in] b pointer to raw EXIF value in memory
* \param[in] order byte order of raw value
* \return value
*/
ExifRational exif_get_rational (const unsigned char *b, ExifByteOrder order);
/*! Retrieve an #ExifSRational value from memory.
*
* \param[in] b pointer to raw EXIF value in memory
* \param[in] order byte order of raw value
* \return value
*/
ExifSRational exif_get_srational (const unsigned char *b, ExifByteOrder order);
/*! Store an ExifShort value into memory in EXIF format.
*
* \param[out] b buffer in which to write raw value
* \param[in] order byte order to use
* \param[in] value data value to store
*/
void exif_set_short (unsigned char *b, ExifByteOrder order,
ExifShort value);
/*! Store an ExifSShort value into memory in EXIF format.
*
* \param[out] b buffer in which to write raw value
* \param[in] order byte order to use
* \param[in] value data value to store
*/
void exif_set_sshort (unsigned char *b, ExifByteOrder order,
ExifSShort value);
/*! Store an ExifLong value into memory in EXIF format.
*
* \param[out] b buffer in which to write raw value
* \param[in] order byte order to use
* \param[in] value data value to store
*/
void exif_set_long (unsigned char *b, ExifByteOrder order,
ExifLong value);
/*! Store an ExifSLong value into memory in EXIF format.
*
* \param[out] b buffer in which to write raw value
* \param[in] order byte order to use
* \param[in] value data value to store
*/
void exif_set_slong (unsigned char *b, ExifByteOrder order,
ExifSLong value);
/*! Store an ExifRational value into memory in EXIF format.
*
* \param[out] b buffer in which to write raw value
* \param[in] order byte order to use
* \param[in] value data value to store
*/
void exif_set_rational (unsigned char *b, ExifByteOrder order,
ExifRational value);
/*! Store an ExifSRational value into memory in EXIF format.
*
* \param[out] b buffer in which to write raw value
* \param[in] order byte order to use
* \param[in] value data value to store
*/
void exif_set_srational (unsigned char *b, ExifByteOrder order,
ExifSRational value);
/*! \internal */
void exif_convert_utf16_to_utf8 (char *out, const unsigned short *in, int maxlen);
/* Please do not use this function outside of the library. */
/*! \internal */
void exif_array_set_byte_order (ExifFormat, unsigned char *, unsigned int,
ExifByteOrder o_orig, ExifByteOrder o_new);
#undef MIN
#define MIN(a, b) (((a) < (b)) ? (a) : (b))
#undef MAX
#define MAX(a, b) (((a) > (b)) ? (a) : (b))
/* For compatibility with older versions */
/*! \deprecated Use EXIF_TAG_SUB_SEC_TIME instead. */
#define EXIF_TAG_SUBSEC_TIME EXIF_TAG_SUB_SEC_TIME
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __EXIF_UTILS_H__ */
|
