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
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
|
/*
* Copyright (c) 2012, Frank Warmerdam <warmerdam@pobox.com>
*
* Permission to use, copy, modify, distribute, and sell this software and
* its documentation for any purpose is hereby granted without fee, provided
* that (i) the above copyright notices and this permission notice appear in
* all copies of the software and related documentation, and (ii) the names of
* Sam Leffler and Silicon Graphics may not be used in any advertising or
* publicity relating to the software without the specific, prior written
* permission of Sam Leffler and Silicon Graphics.
*
* THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
* EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
* WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
*
* IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
* ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
* OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
* WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
* LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
* OF THIS SOFTWARE.
*/
/*
* TIFF Library
*
* Module to handling of custom directories like EXIF.
*/
#include "tif_config.h"
#include <stdio.h>
#include <string.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include "tiffio.h"
#include "tif_dir.h"
#include "tifftest.h"
static const char filename[] = "custom_dir.tif";
#define SPP 3 /* Samples per pixel */
const uint16 width = 1;
const uint16 length = 1;
const uint16 bps = 8;
const uint16 photometric = PHOTOMETRIC_RGB;
const uint16 rows_per_strip = 1;
const uint16 planarconfig = PLANARCONFIG_CONTIG;
static TIFFField
customFields[] = {
{ TIFFTAG_IMAGEWIDTH, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "Custom1", NULL },
{ TIFFTAG_DOTRANGE, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "Custom2", NULL },
};
static TIFFFieldArray customFieldArray = { tfiatOther, 0, 2, customFields };
int
main()
{
TIFF *tif;
unsigned char buf[SPP] = { 0, 127, 255 };
uint64 dir_offset = 0, dir_offset2 = 0;
uint64 read_dir_offset = 0, read_dir_offset2 = 0;
uint64 *dir_offset2_ptr = NULL;
char *ascii_value;
uint16 count16 = 0;
/* We write the main directory as a simple image. */
tif = TIFFOpen(filename, "w+");
if (!tif) {
fprintf (stderr, "Can't create test TIFF file %s.\n", filename);
return 1;
}
if (!TIFFSetField(tif, TIFFTAG_IMAGEWIDTH, width)) {
fprintf (stderr, "Can't set ImageWidth tag.\n");
goto failure;
}
if (!TIFFSetField(tif, TIFFTAG_IMAGELENGTH, length)) {
fprintf (stderr, "Can't set ImageLength tag.\n");
goto failure;
}
if (!TIFFSetField(tif, TIFFTAG_BITSPERSAMPLE, bps)) {
fprintf (stderr, "Can't set BitsPerSample tag.\n");
goto failure;
}
if (!TIFFSetField(tif, TIFFTAG_SAMPLESPERPIXEL, SPP)) {
fprintf (stderr, "Can't set SamplesPerPixel tag.\n");
goto failure;
}
if (!TIFFSetField(tif, TIFFTAG_ROWSPERSTRIP, rows_per_strip)) {
fprintf (stderr, "Can't set SamplesPerPixel tag.\n");
goto failure;
}
if (!TIFFSetField(tif, TIFFTAG_PLANARCONFIG, planarconfig)) {
fprintf (stderr, "Can't set PlanarConfiguration tag.\n");
goto failure;
}
if (!TIFFSetField(tif, TIFFTAG_PHOTOMETRIC, photometric)) {
fprintf (stderr, "Can't set PhotometricInterpretation tag.\n");
goto failure;
}
/* Write dummy pixel data. */
if (TIFFWriteScanline(tif, buf, 0, 0) == -1) {
fprintf (stderr, "Can't write image data.\n");
goto failure;
}
if (!TIFFWriteDirectory( tif )) {
fprintf (stderr, "TIFFWriteDirectory() failed.\n");
goto failure;
}
/*
* Now create an EXIF directory.
*/
if (TIFFCreateEXIFDirectory(tif) != 0) {
fprintf (stderr, "TIFFCreateEXIFDirectory() failed.\n" );
goto failure;
}
if (!TIFFSetField( tif, EXIFTAG_SPECTRALSENSITIVITY, "EXIF Spectral Sensitivity")) {
fprintf (stderr, "Can't write SPECTRALSENSITIVITY\n" );
goto failure;
}
if (!TIFFWriteCustomDirectory( tif, &dir_offset )) {
fprintf (stderr, "TIFFWriteCustomDirectory() with EXIF failed.\n");
goto failure;
}
/*
* Now create a custom directory with tags that conflict with mainline
* TIFF tags.
*/
TIFFFreeDirectory( tif );
if (TIFFCreateCustomDirectory(tif, &customFieldArray) != 0) {
fprintf (stderr, "TIFFCreateEXIFDirectory() failed.\n" );
goto failure;
}
if (!TIFFSetField( tif, TIFFTAG_IMAGEWIDTH, "*Custom1")) { /* not really IMAGEWIDTH */
fprintf (stderr, "Can't write pseudo-IMAGEWIDTH.\n" );
goto failure;
}
if (!TIFFSetField( tif, TIFFTAG_DOTRANGE, "*Custom2")) { /* not really DOTWIDTH */
fprintf (stderr, "Can't write pseudo-DOTWIDTH.\n" );
goto failure;
}
if (!TIFFWriteCustomDirectory( tif, &dir_offset2 )) {
fprintf (stderr, "TIFFWriteCustomDirectory() with EXIF failed.\n");
goto failure;
}
/*
* Go back to the first directory, and add the EXIFIFD pointer.
*/
TIFFSetDirectory(tif, 0);
TIFFSetField(tif, TIFFTAG_EXIFIFD, dir_offset );
TIFFSetField(tif, TIFFTAG_SUBIFD, 1, &dir_offset2 );
TIFFClose(tif);
/* Ok, now test whether we can read written values in the EXIF directory. */
tif = TIFFOpen(filename, "r");
TIFFGetField(tif, TIFFTAG_EXIFIFD, &read_dir_offset );
if( read_dir_offset != dir_offset ) {
fprintf (stderr, "Did not get expected EXIFIFD.\n" );
goto failure;
}
TIFFGetField(tif, TIFFTAG_SUBIFD, &count16, &dir_offset2_ptr );
read_dir_offset2 = dir_offset2_ptr[0];
if( read_dir_offset2 != dir_offset2 || count16 != 1) {
fprintf (stderr, "Did not get expected SUBIFD.\n" );
goto failure;
}
if( !TIFFReadEXIFDirectory(tif, read_dir_offset) ) {
fprintf (stderr, "TIFFReadEXIFDirectory() failed.\n" );
goto failure;
}
if (!TIFFGetField( tif, EXIFTAG_SPECTRALSENSITIVITY, &ascii_value) ) {
fprintf (stderr, "reading SPECTRALSENSITIVITY failed.\n" );
goto failure;
}
if( strcmp(ascii_value,"EXIF Spectral Sensitivity") != 0) {
fprintf (stderr, "got wrong SPECTRALSENSITIVITY value.\n" );
goto failure;
}
/* Try reading the Custom directory */
if( !TIFFReadCustomDirectory(tif, read_dir_offset2, &customFieldArray) ) {
fprintf (stderr, "TIFFReadCustomDirectory() failed.\n" );
goto failure;
}
if (!TIFFGetField( tif, TIFFTAG_IMAGEWIDTH, &ascii_value) ) {
fprintf (stderr, "reading pseudo-IMAGEWIDTH failed.\n" );
goto failure;
}
if( strcmp(ascii_value,"*Custom1") != 0) {
fprintf (stderr, "got wrong pseudo-IMAGEWIDTH value.\n" );
goto failure;
}
if (!TIFFGetField( tif, TIFFTAG_DOTRANGE, &ascii_value) ) {
fprintf (stderr, "reading pseudo-DOTRANGE failed.\n" );
goto failure;
}
if( strcmp(ascii_value,"*Custom2") != 0) {
fprintf (stderr, "got wrong pseudo-DOTRANGE value.\n" );
goto failure;
}
TIFFClose(tif);
/* All tests passed; delete file and exit with success status. */
unlink(filename);
return 0;
failure:
/*
* Something goes wrong; close file and return unsuccessful status.
* Do not remove the file for further manual investigation.
*/
TIFFClose(tif);
return 1;
}
/* vim: set ts=8 sts=8 sw=8 noet: */
|
GitWeb