3 * Copyright (c) 2001 Lutz Mueller <lutz@users.sourceforge.net>
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the
17 * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
18 * Boston, MA 02110-1301 USA.
23 #include <libexif/exif-entry.h>
24 #include <libexif/exif-ifd.h>
25 #include <libexif/exif-utils.h>
26 #include <libexif/i18n.h>
36 #define M_PI 3.14159265358979323846
39 struct _ExifEntryPrivate
41 unsigned int ref_count;
46 /* This function is hidden in exif-data.c */
47 ExifLog *exif_data_get_log (ExifData *);
49 #ifndef NO_VERBOSE_TAG_STRINGS
51 exif_entry_log (ExifEntry *e, ExifLogCode code, const char *format, ...)
56 if (e && e->parent && e->parent->parent)
57 l = exif_data_get_log (e->parent->parent);
58 va_start (args, format);
59 exif_logv (l, code, "ExifEntry", format, args);
63 #if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
64 #define exif_entry_log(...) do { } while (0)
65 #elif defined(__GNUC__)
66 #define exif_entry_log(x...) do { } while (0)
68 #define exif_entry_log (void)
73 exif_entry_alloc (ExifEntry *e, unsigned int i)
78 if (!e || !e->priv || !i) return NULL;
80 d = exif_mem_alloc (e->priv->mem, i);
83 if (e->parent && e->parent->parent)
84 l = exif_data_get_log (e->parent->parent);
85 EXIF_LOG_NO_MEMORY (l, "ExifEntry", i);
90 exif_entry_realloc (ExifEntry *e, void *d_orig, unsigned int i)
95 if (!e || !e->priv) return NULL;
97 if (!i) { exif_mem_free (e->priv->mem, d_orig); return NULL; }
99 d = exif_mem_realloc (e->priv->mem, d_orig, i);
102 if (e->parent && e->parent->parent)
103 l = exif_data_get_log (e->parent->parent);
104 EXIF_LOG_NO_MEMORY (l, "ExifEntry", i);
109 exif_entry_new (void)
111 ExifMem *mem = exif_mem_new_default ();
112 ExifEntry *e = exif_entry_new_mem (mem);
114 exif_mem_unref (mem);
120 exif_entry_new_mem (ExifMem *mem)
124 e = exif_mem_alloc (mem, sizeof (ExifEntry));
126 e->priv = exif_mem_alloc (mem, sizeof (ExifEntryPrivate));
127 if (!e->priv) { exif_mem_free (mem, e); return NULL; }
128 e->priv->ref_count = 1;
137 exif_entry_ref (ExifEntry *e)
141 e->priv->ref_count++;
145 exif_entry_unref (ExifEntry *e)
149 e->priv->ref_count--;
150 if (!e->priv->ref_count)
155 exif_entry_free (ExifEntry *e)
160 ExifMem *mem = e->priv->mem;
162 exif_mem_free (mem, e->data);
163 exif_mem_free (mem, e->priv);
164 exif_mem_free (mem, e);
165 exif_mem_unref (mem);
169 /*! Get a value and convert it to an ExifShort.
170 * \bug Not all types are converted that could be converted and no indication
171 * is made when that occurs
173 static inline ExifShort
174 exif_get_short_convert (const unsigned char *buf, ExifFormat format,
178 case EXIF_FORMAT_LONG:
179 return (ExifShort) exif_get_long (buf, order);
180 case EXIF_FORMAT_SLONG:
181 return (ExifShort) exif_get_slong (buf, order);
182 case EXIF_FORMAT_SHORT:
183 return (ExifShort) exif_get_short (buf, order);
184 case EXIF_FORMAT_SSHORT:
185 return (ExifShort) exif_get_sshort (buf, order);
186 case EXIF_FORMAT_BYTE:
187 case EXIF_FORMAT_SBYTE:
188 return (ExifShort) buf[0];
190 /* Unsupported type */
191 return (ExifShort) 0;
196 exif_entry_fix (ExifEntry *e)
198 unsigned int i, newsize;
199 unsigned char *newdata;
204 if (!e || !e->priv) return;
208 /* These tags all need to be of format SHORT. */
209 case EXIF_TAG_YCBCR_SUB_SAMPLING:
210 case EXIF_TAG_SUBJECT_AREA:
211 case EXIF_TAG_COLOR_SPACE:
212 case EXIF_TAG_PLANAR_CONFIGURATION:
213 case EXIF_TAG_SENSING_METHOD:
214 case EXIF_TAG_ORIENTATION:
215 case EXIF_TAG_YCBCR_POSITIONING:
216 case EXIF_TAG_PHOTOMETRIC_INTERPRETATION:
217 case EXIF_TAG_CUSTOM_RENDERED:
218 case EXIF_TAG_EXPOSURE_MODE:
219 case EXIF_TAG_WHITE_BALANCE:
220 case EXIF_TAG_SCENE_CAPTURE_TYPE:
221 case EXIF_TAG_GAIN_CONTROL:
222 case EXIF_TAG_SATURATION:
223 case EXIF_TAG_CONTRAST:
224 case EXIF_TAG_SHARPNESS:
225 case EXIF_TAG_ISO_SPEED_RATINGS:
227 case EXIF_FORMAT_LONG:
228 case EXIF_FORMAT_SLONG:
229 case EXIF_FORMAT_BYTE:
230 case EXIF_FORMAT_SBYTE:
231 case EXIF_FORMAT_SSHORT:
232 if (!e->parent || !e->parent->parent) break;
233 exif_entry_log (e, EXIF_LOG_CODE_DEBUG,
234 _("Tag '%s' was of format '%s' (which is "
235 "against specification) and has been "
236 "changed to format '%s'."),
237 exif_tag_get_name_in_ifd(e->tag,
238 exif_entry_get_ifd(e)),
239 exif_format_get_name (e->format),
240 exif_format_get_name (EXIF_FORMAT_SHORT));
242 o = exif_data_get_byte_order (e->parent->parent);
243 newsize = e->components * exif_format_get_size (EXIF_FORMAT_SHORT);
244 newdata = exif_entry_alloc (e, newsize);
246 exif_entry_log (e, EXIF_LOG_CODE_NO_MEMORY,
247 "Could not allocate %lu byte(s).", (unsigned long)newsize);
251 for (i = 0; i < e->components; i++)
254 exif_format_get_size (
255 EXIF_FORMAT_SHORT), o,
256 exif_get_short_convert (
258 exif_format_get_size (e->format),
261 exif_mem_free (e->priv->mem, e->data);
264 e->format = EXIF_FORMAT_SHORT;
266 case EXIF_FORMAT_SHORT:
267 /* No conversion necessary */
270 exif_entry_log (e, EXIF_LOG_CODE_CORRUPT_DATA,
271 _("Tag '%s' is of format '%s' (which is "
272 "against specification) but cannot be changed "
274 exif_tag_get_name_in_ifd(e->tag,
275 exif_entry_get_ifd(e)),
276 exif_format_get_name (e->format),
277 exif_format_get_name (EXIF_FORMAT_SHORT));
282 /* All these tags need to be of format 'Rational'. */
283 case EXIF_TAG_FNUMBER:
284 case EXIF_TAG_APERTURE_VALUE:
285 case EXIF_TAG_EXPOSURE_TIME:
286 case EXIF_TAG_FOCAL_LENGTH:
288 case EXIF_FORMAT_SRATIONAL:
289 if (!e->parent || !e->parent->parent) break;
290 o = exif_data_get_byte_order (e->parent->parent);
291 for (i = 0; i < e->components; i++) {
292 sr = exif_get_srational (e->data + i *
293 exif_format_get_size (
294 EXIF_FORMAT_SRATIONAL), o);
295 r.numerator = (ExifLong) sr.numerator;
296 r.denominator = (ExifLong) sr.denominator;
297 exif_set_rational (e->data + i *
298 exif_format_get_size (
299 EXIF_FORMAT_RATIONAL), o, r);
301 e->format = EXIF_FORMAT_RATIONAL;
302 exif_entry_log (e, EXIF_LOG_CODE_DEBUG,
303 _("Tag '%s' was of format '%s' (which is "
304 "against specification) and has been "
305 "changed to format '%s'."),
306 exif_tag_get_name_in_ifd(e->tag,
307 exif_entry_get_ifd(e)),
308 exif_format_get_name (EXIF_FORMAT_SRATIONAL),
309 exif_format_get_name (EXIF_FORMAT_RATIONAL));
316 /* All these tags need to be of format 'SRational'. */
317 case EXIF_TAG_EXPOSURE_BIAS_VALUE:
318 case EXIF_TAG_BRIGHTNESS_VALUE:
319 case EXIF_TAG_SHUTTER_SPEED_VALUE:
321 case EXIF_FORMAT_RATIONAL:
322 if (!e->parent || !e->parent->parent) break;
323 o = exif_data_get_byte_order (e->parent->parent);
324 for (i = 0; i < e->components; i++) {
325 r = exif_get_rational (e->data + i *
326 exif_format_get_size (
327 EXIF_FORMAT_RATIONAL), o);
328 sr.numerator = (ExifLong) r.numerator;
329 sr.denominator = (ExifLong) r.denominator;
330 exif_set_srational (e->data + i *
331 exif_format_get_size (
332 EXIF_FORMAT_SRATIONAL), o, sr);
334 e->format = EXIF_FORMAT_SRATIONAL;
335 exif_entry_log (e, EXIF_LOG_CODE_DEBUG,
336 _("Tag '%s' was of format '%s' (which is "
337 "against specification) and has been "
338 "changed to format '%s'."),
339 exif_tag_get_name_in_ifd(e->tag,
340 exif_entry_get_ifd(e)),
341 exif_format_get_name (EXIF_FORMAT_RATIONAL),
342 exif_format_get_name (EXIF_FORMAT_SRATIONAL));
349 case EXIF_TAG_USER_COMMENT:
351 /* Format needs to be UNDEFINED. */
352 if (e->format != EXIF_FORMAT_UNDEFINED) {
353 exif_entry_log (e, EXIF_LOG_CODE_DEBUG,
354 _("Tag 'UserComment' had invalid format '%s'. "
355 "Format has been set to 'undefined'."),
356 exif_format_get_name (e->format));
357 e->format = EXIF_FORMAT_UNDEFINED;
360 /* Some packages like Canon ZoomBrowser EX 4.5 store
361 only one zero byte followed by 7 bytes of rubbish */
362 if ((e->size >= 8) && (e->data[0] == 0)) {
363 memcpy(e->data, "\0\0\0\0\0\0\0\0", 8);
366 /* There need to be at least 8 bytes. */
368 e->data = exif_entry_realloc (e, e->data, 8 + e->size);
376 memmove (e->data + 8, e->data, e->size);
377 memcpy (e->data, "ASCII\0\0\0", 8);
380 exif_entry_log (e, EXIF_LOG_CODE_DEBUG,
381 _("Tag 'UserComment' has been expanded to at "
382 "least 8 bytes in order to follow the "
388 * If the first 8 bytes are empty and real data starts
389 * afterwards, let's assume ASCII and claim the 8 first
390 * bytes for the format specifyer.
392 for (i = 0; (i < e->size) && !e->data[i]; i++);
393 if (!i) for ( ; (i < e->size) && (e->data[i] == ' '); i++);
394 if ((i >= 8) && (i < e->size)) {
395 exif_entry_log (e, EXIF_LOG_CODE_DEBUG,
396 _("Tag 'UserComment' is not empty but does not "
397 "start with a format identifier. "
398 "This has been fixed."));
399 memcpy (e->data, "ASCII\0\0\0", 8);
404 * First 8 bytes need to follow the specification. If they don't,
407 if (memcmp (e->data, "ASCII\0\0\0" , 8) &&
408 memcmp (e->data, "UNICODE\0" , 8) &&
409 memcmp (e->data, "JIS\0\0\0\0\0" , 8) &&
410 memcmp (e->data, "\0\0\0\0\0\0\0\0", 8)) {
411 e->data = exif_entry_realloc (e, e->data, 8 + e->size);
419 memmove (e->data + 8, e->data, e->size);
420 memcpy (e->data, "ASCII\0\0\0", 8);
423 exif_entry_log (e, EXIF_LOG_CODE_DEBUG,
424 _("Tag 'UserComment' did not start with a "
425 "format identifier. This has been fixed."));
435 /*! Format the value of an ExifEntry for human display in a generic way.
436 * The output is localized. The formatting is independent of the tag number
437 * and is based entirely on the data type.
438 * \pre The ExifEntry is already a member of an ExifData.
439 * \param[in] e EXIF entry
440 * \param[out] val buffer in which to store value
441 * \param[in] maxlen one less than the length of the buffer val
444 exif_entry_format_value(ExifEntry *e, char *val, size_t maxlen)
451 ExifSRational v_srat;
455 const ExifByteOrder o = exif_data_get_byte_order (e->parent->parent);
457 if (!e->size || !maxlen)
459 ++maxlen; /* include the terminating NUL */
461 case EXIF_FORMAT_UNDEFINED:
462 snprintf (val, maxlen, _("%i bytes undefined data"), e->size);
464 case EXIF_FORMAT_BYTE:
465 case EXIF_FORMAT_SBYTE:
467 snprintf (val, maxlen, "0x%02x", v_byte);
469 for (i = 1; i < e->components; i++) {
471 snprintf (val+len, maxlen-len, ", 0x%02x", v_byte);
472 len += strlen (val+len);
473 if (len >= maxlen-1) break;
476 case EXIF_FORMAT_SHORT:
477 v_short = exif_get_short (e->data, o);
478 snprintf (val, maxlen, "%u", v_short);
480 for (i = 1; i < e->components; i++) {
481 v_short = exif_get_short (e->data +
482 exif_format_get_size (e->format) * i, o);
483 snprintf (val+len, maxlen-len, ", %u", v_short);
484 len += strlen (val+len);
485 if (len >= maxlen-1) break;
488 case EXIF_FORMAT_SSHORT:
489 v_sshort = exif_get_sshort (e->data, o);
490 snprintf (val, maxlen, "%i", v_sshort);
492 for (i = 1; i < e->components; i++) {
493 v_sshort = exif_get_short (e->data +
494 exif_format_get_size (e->format) *
496 snprintf (val+len, maxlen-len, ", %i", v_sshort);
497 len += strlen (val+len);
498 if (len >= maxlen-1) break;
501 case EXIF_FORMAT_LONG:
502 v_long = exif_get_long (e->data, o);
503 snprintf (val, maxlen, "%lu", (unsigned long) v_long);
505 for (i = 1; i < e->components; i++) {
506 v_long = exif_get_long (e->data +
507 exif_format_get_size (e->format) *
509 snprintf (val+len, maxlen-len, ", %lu", (unsigned long) v_long);
510 len += strlen (val+len);
511 if (len >= maxlen-1) break;
514 case EXIF_FORMAT_SLONG:
515 v_slong = exif_get_slong (e->data, o);
516 snprintf (val, maxlen, "%li", (long) v_slong);
518 for (i = 1; i < e->components; i++) {
519 v_slong = exif_get_slong (e->data +
520 exif_format_get_size (e->format) * i, o);
521 snprintf (val+len, maxlen-len, ", %li", (long) v_slong);
522 len += strlen (val+len);
523 if (len >= maxlen-1) break;
526 case EXIF_FORMAT_ASCII:
527 strncpy (val, (char *) e->data, MIN (maxlen-1, e->size));
528 val[MIN (maxlen-1, e->size)] = 0;
530 case EXIF_FORMAT_RATIONAL:
532 for (i = 0; i < e->components; i++) {
534 snprintf (val+len, maxlen-len, ", ");
535 len += strlen (val+len);
537 v_rat = exif_get_rational (
539 if (v_rat.denominator) {
541 * Choose the number of significant digits to
542 * display based on the size of the denominator.
543 * It is scaled so that denominators within the
544 * range 13..120 will show 2 decimal points.
546 int decimals = (int)(log10(v_rat.denominator)-0.08+1.0);
547 snprintf (val+len, maxlen-len, "%2.*f",
549 (double) v_rat.numerator /
550 (double) v_rat.denominator);
552 snprintf (val+len, maxlen-len, "%lu/%lu",
553 (unsigned long) v_rat.numerator,
554 (unsigned long) v_rat.denominator);
555 len += strlen (val+len);
556 if (len >= maxlen-1) break;
559 case EXIF_FORMAT_SRATIONAL:
561 for (i = 0; i < e->components; i++) {
563 snprintf (val+len, maxlen-len, ", ");
564 len += strlen (val+len);
566 v_srat = exif_get_srational (
568 if (v_srat.denominator) {
569 int decimals = (int)(log10(fabs(v_srat.denominator))-0.08+1.0);
570 snprintf (val+len, maxlen-len, "%2.*f",
572 (double) v_srat.numerator /
573 (double) v_srat.denominator);
575 snprintf (val+len, maxlen-len, "%li/%li",
576 (long) v_srat.numerator,
577 (long) v_srat.denominator);
578 len += strlen (val+len);
579 if (len >= maxlen-1) break;
582 case EXIF_FORMAT_DOUBLE:
583 case EXIF_FORMAT_FLOAT:
585 snprintf (val, maxlen, _("%i bytes unsupported data type"),
592 exif_entry_dump (ExifEntry *e, unsigned int indent)
598 for (i = 0; i < 2 * indent; i++)
605 printf ("%sTag: 0x%x ('%s')\n", buf, e->tag,
606 exif_tag_get_name_in_ifd (e->tag, exif_entry_get_ifd(e)));
607 printf ("%s Format: %i ('%s')\n", buf, e->format,
608 exif_format_get_name (e->format));
609 printf ("%s Components: %i\n", buf, (int) e->components);
610 printf ("%s Size: %i\n", buf, e->size);
611 printf ("%s Value: %s\n", buf, exif_entry_get_value (e, value, sizeof(value)));
614 /*! Check if a string consists entirely of a single, repeated character.
615 * Up to first n bytes are checked.
617 * \param[in] data pointer of string to check
618 * \param[in] ch character to match
619 * \param[in] n maximum number of characters to match
621 * \return 0 if the string matches or is of zero length, nonzero otherwise
624 match_repeated_char(const unsigned char *data, unsigned char ch, size_t n)
627 for (i=n; i; --i, ++data) {
629 i = 0; /* all bytes before NUL matched */
638 #define CF(entry,target,v,maxlen) \
640 if (entry->format != target) { \
641 exif_entry_log (entry, EXIF_LOG_CODE_CORRUPT_DATA, \
642 _("The tag '%s' contains data of an invalid " \
643 "format ('%s', expected '%s')."), \
644 exif_tag_get_name (entry->tag), \
645 exif_format_get_name (entry->format), \
646 exif_format_get_name (target)); \
651 #define CC(entry,target,v,maxlen) \
653 if (entry->components != target) { \
654 exif_entry_log (entry, EXIF_LOG_CODE_CORRUPT_DATA, \
655 _("The tag '%s' contains an invalid number of " \
656 "components (%i, expected %i)."), \
657 exif_tag_get_name (entry->tag), \
658 (int) entry->components, (int) target); \
663 static const struct {
665 const char *strings[10];
667 #ifndef NO_VERBOSE_TAG_DATA
668 { EXIF_TAG_PLANAR_CONFIGURATION,
669 { N_("Chunky format"), N_("Planar format"), NULL}},
670 { EXIF_TAG_SENSING_METHOD,
671 { "", N_("Not defined"), N_("One-chip color area sensor"),
672 N_("Two-chip color area sensor"), N_("Three-chip color area sensor"),
673 N_("Color sequential area sensor"), "", N_("Trilinear sensor"),
674 N_("Color sequential linear sensor"), NULL}},
675 { EXIF_TAG_ORIENTATION,
676 { "", N_("Top-left"), N_("Top-right"), N_("Bottom-right"),
677 N_("Bottom-left"), N_("Left-top"), N_("Right-top"),
678 N_("Right-bottom"), N_("Left-bottom"), NULL}},
679 { EXIF_TAG_YCBCR_POSITIONING,
680 { "", N_("Centered"), N_("Co-sited"), NULL}},
681 { EXIF_TAG_PHOTOMETRIC_INTERPRETATION,
682 { N_("Reversed mono"), N_("Normal mono"), N_("RGB"), N_("Palette"), "",
683 N_("CMYK"), N_("YCbCr"), "", N_("CieLAB"), NULL}},
684 { EXIF_TAG_CUSTOM_RENDERED,
685 { N_("Normal process"), N_("Custom process"), NULL}},
686 { EXIF_TAG_EXPOSURE_MODE,
687 { N_("Auto exposure"), N_("Manual exposure"), N_("Auto bracket"), NULL}},
688 { EXIF_TAG_WHITE_BALANCE,
689 { N_("Auto white balance"), N_("Manual white balance"), NULL}},
690 { EXIF_TAG_SCENE_CAPTURE_TYPE,
691 { N_("Standard"), N_("Landscape"), N_("Portrait"),
692 N_("Night scene"), NULL}},
693 { EXIF_TAG_GAIN_CONTROL,
694 { N_("Normal"), N_("Low gain up"), N_("High gain up"),
695 N_("Low gain down"), N_("High gain down"), NULL}},
696 { EXIF_TAG_SATURATION,
697 { N_("Normal"), N_("Low saturation"), N_("High saturation"), NULL}},
698 { EXIF_TAG_CONTRAST , {N_("Normal"), N_("Soft"), N_("Hard"), NULL}},
699 { EXIF_TAG_SHARPNESS, {N_("Normal"), N_("Soft"), N_("Hard"), NULL}},
704 static const struct {
708 const char *values[4]; /*!< list of progressively shorter string
709 descriptions; the longest one that fits will be
713 #ifndef NO_VERBOSE_TAG_DATA
714 { EXIF_TAG_METERING_MODE,
715 { { 0, {N_("Unknown"), NULL}},
716 { 1, {N_("Average"), N_("Avg"), NULL}},
717 { 2, {N_("Center-weighted average"), N_("Center-weight"), NULL}},
718 { 3, {N_("Spot"), NULL}},
719 { 4, {N_("Multi spot"), NULL}},
720 { 5, {N_("Pattern"), NULL}},
721 { 6, {N_("Partial"), NULL}},
722 {255, {N_("Other"), NULL}},
724 { EXIF_TAG_COMPRESSION,
725 { {1, {N_("Uncompressed"), NULL}},
726 {5, {N_("LZW compression"), NULL}},
727 {6, {N_("JPEG compression"), NULL}},
728 {7, {N_("JPEG compression"), NULL}},
729 {8, {N_("Deflate/ZIP compression"), NULL}},
730 {32773, {N_("PackBits compression"), NULL}},
732 { EXIF_TAG_LIGHT_SOURCE,
733 { { 0, {N_("Unknown"), NULL}},
734 { 1, {N_("Daylight"), NULL}},
735 { 2, {N_("Fluorescent"), NULL}},
736 { 3, {N_("Tungsten incandescent light"), N_("Tungsten"), NULL}},
737 { 4, {N_("Flash"), NULL}},
738 { 9, {N_("Fine weather"), NULL}},
739 { 10, {N_("Cloudy weather"), N_("Cloudy"), NULL}},
740 { 11, {N_("Shade"), NULL}},
741 { 12, {N_("Daylight fluorescent"), NULL}},
742 { 13, {N_("Day white fluorescent"), NULL}},
743 { 14, {N_("Cool white fluorescent"), NULL}},
744 { 15, {N_("White fluorescent"), NULL}},
745 { 17, {N_("Standard light A"), NULL}},
746 { 18, {N_("Standard light B"), NULL}},
747 { 19, {N_("Standard light C"), NULL}},
748 { 20, {N_("D55"), NULL}},
749 { 21, {N_("D65"), NULL}},
750 { 22, {N_("D75"), NULL}},
751 { 24, {N_("ISO studio tungsten"),NULL}},
752 {255, {N_("Other"), NULL}},
754 { EXIF_TAG_FOCAL_PLANE_RESOLUTION_UNIT,
755 { {2, {N_("Inch"), N_("in"), NULL}},
756 {3, {N_("Centimeter"), N_("cm"), NULL}},
758 { EXIF_TAG_RESOLUTION_UNIT,
759 { {2, {N_("Inch"), N_("in"), NULL}},
760 {3, {N_("Centimeter"), N_("cm"), NULL}},
762 { EXIF_TAG_EXPOSURE_PROGRAM,
763 { {0, {N_("Not defined"), NULL}},
764 {1, {N_("Manual"), NULL}},
765 {2, {N_("Normal program"), N_("Normal"), NULL}},
766 {3, {N_("Aperture priority"), N_("Aperture"), NULL}},
767 {4, {N_("Shutter priority"),N_("Shutter"), NULL}},
768 {5, {N_("Creative program (biased toward depth of field)"),
769 N_("Creative"), NULL}},
770 {6, {N_("Creative program (biased toward fast shutter speed)"),
771 N_("Action"), NULL}},
772 {7, {N_("Portrait mode (for closeup photos with the background out "
773 "of focus)"), N_("Portrait"), NULL}},
774 {8, {N_("Landscape mode (for landscape photos with the background "
775 "in focus)"), N_("Landscape"), NULL}},
778 { {0x0000, {N_("Flash did not fire"), N_("No flash"), NULL}},
779 {0x0001, {N_("Flash fired"), N_("Flash"), N_("Yes"), NULL}},
780 {0x0005, {N_("Strobe return light not detected"), N_("Without strobe"),
782 {0x0007, {N_("Strobe return light detected"), N_("With strobe"), NULL}},
783 {0x0008, {N_("Flash did not fire"), NULL}}, /* Olympus E-330 */
784 {0x0009, {N_("Flash fired, compulsory flash mode"), NULL}},
785 {0x000d, {N_("Flash fired, compulsory flash mode, return light "
786 "not detected"), NULL}},
787 {0x000f, {N_("Flash fired, compulsory flash mode, return light "
789 {0x0010, {N_("Flash did not fire, compulsory flash mode"), NULL}},
790 {0x0018, {N_("Flash did not fire, auto mode"), NULL}},
791 {0x0019, {N_("Flash fired, auto mode"), NULL}},
792 {0x001d, {N_("Flash fired, auto mode, return light not detected"),
794 {0x001f, {N_("Flash fired, auto mode, return light detected"), NULL}},
795 {0x0020, {N_("No flash function"),NULL}},
796 {0x0041, {N_("Flash fired, red-eye reduction mode"), NULL}},
797 {0x0045, {N_("Flash fired, red-eye reduction mode, return light "
798 "not detected"), NULL}},
799 {0x0047, {N_("Flash fired, red-eye reduction mode, return light "
801 {0x0049, {N_("Flash fired, compulsory flash mode, red-eye reduction "
803 {0x004d, {N_("Flash fired, compulsory flash mode, red-eye reduction "
804 "mode, return light not detected"), NULL}},
805 {0x004f, {N_("Flash fired, compulsory flash mode, red-eye reduction mode, "
806 "return light detected"), NULL}},
807 {0x0058, {N_("Flash did not fire, auto mode, red-eye reduction mode"), NULL}},
808 {0x0059, {N_("Flash fired, auto mode, red-eye reduction mode"), NULL}},
809 {0x005d, {N_("Flash fired, auto mode, return light not detected, "
810 "red-eye reduction mode"), NULL}},
811 {0x005f, {N_("Flash fired, auto mode, return light detected, "
812 "red-eye reduction mode"), NULL}},
814 { EXIF_TAG_SUBJECT_DISTANCE_RANGE,
815 { {0, {N_("Unknown"), N_("?"), NULL}},
816 {1, {N_("Macro"), NULL}},
817 {2, {N_("Close view"), N_("Close"), NULL}},
818 {3, {N_("Distant view"), N_("Distant"), NULL}},
820 { EXIF_TAG_COLOR_SPACE,
821 { {1, {N_("sRGB"), NULL}},
822 {2, {N_("Adobe RGB"), NULL}},
823 {0xffff, {N_("Uncalibrated"), NULL}},
826 {0, { { 0, {NULL}}} }
830 exif_entry_get_value (ExifEntry *e, char *val, unsigned int maxlen)
832 unsigned int i, j, k;
833 ExifShort v_short, v_short2, v_short3, v_short4;
836 ExifSRational v_srat;
842 static const struct {
856 /* FIXME: This belongs to somewhere else. */
857 /* libexif should use the default system locale.
858 * If an application specifically requires UTF-8, then we
859 * must give the application a way to tell libexif that.
861 * bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
863 bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
865 if (!e || !e->parent || !e->parent->parent || !maxlen)
868 /* make sure the returned string is zero terminated */
869 memset (val, 0, maxlen);
871 memset (b, 0, sizeof (b));
873 /* We need the byte order */
874 o = exif_data_get_byte_order (e->parent->parent);
877 if (e->size != e->components * exif_format_get_size (e->format)) {
878 snprintf (val, maxlen, _("Invalid size of entry (%i, "
879 "expected %li x %i)."), e->size, e->components,
880 exif_format_get_size (e->format));
885 case EXIF_TAG_USER_COMMENT:
888 * The specification says UNDEFINED, but some
889 * manufacturers don't care and use ASCII. If this is the
890 * case here, only refuse to read it if there is no chance
891 * of finding readable data.
893 if ((e->format != EXIF_FORMAT_ASCII) ||
895 ( memcmp (e->data, "ASCII\0\0\0" , 8) &&
896 memcmp (e->data, "UNICODE\0" , 8) &&
897 memcmp (e->data, "JIS\0\0\0\0\0", 8) &&
898 memcmp (e->data, "\0\0\0\0\0\0\0\0", 8)))
899 CF (e, EXIF_FORMAT_UNDEFINED, val, maxlen);
902 * Note that, according to the specification (V2.1, p 40),
903 * the user comment field does not have to be
906 if ((e->size >= 8) && !memcmp (e->data, "ASCII\0\0\0", 8)) {
907 strncpy (val, (char *) e->data + 8, MIN (e->size - 8, maxlen));
910 if ((e->size >= 8) && !memcmp (e->data, "UNICODE\0", 8)) {
911 strncpy (val, _("Unsupported UNICODE string"), maxlen);
912 /* FIXME: use iconv to convert into the locale encoding.
913 * EXIF 2.2 implies (but does not say) that this encoding is
918 if ((e->size >= 8) && !memcmp (e->data, "JIS\0\0\0\0\0", 8)) {
919 strncpy (val, _("Unsupported JIS string"), maxlen);
920 /* FIXME: use iconv to convert into the locale encoding */
924 /* Check if there is really some information in the tag. */
925 for (i = 0; (i < e->size) &&
926 (!e->data[i] || (e->data[i] == ' ')); i++);
927 if (i == e->size) break;
930 * If we reach this point, the tag does not
931 * comply with the standard but seems to contain data.
932 * Print as much as possible.
934 exif_entry_log (e, EXIF_LOG_CODE_DEBUG,
935 _("Tag UserComment contains data but is "
936 "against specification."));
937 for (j = 0; (i < e->size) && (j < maxlen); i++, j++) {
938 exif_entry_log (e, EXIF_LOG_CODE_DEBUG,
939 _("Byte at position %i: 0x%02x"), i, e->data[i]);
940 val[j] = isprint (e->data[i]) ? e->data[i] : '.';
945 strncpy (val, (char *) e->data, MIN (e->size, maxlen));
948 case EXIF_TAG_EXIF_VERSION:
949 CF (e, EXIF_FORMAT_UNDEFINED, val, maxlen);
950 CC (e, 4, val, maxlen);
951 strncpy (val, _("Unknown Exif Version"), maxlen);
952 for (i = 0; *versions[i].label; i++) {
953 if (!memcmp (e->data, versions[i].label, 4)) {
954 snprintf (val, maxlen,
955 _("Exif Version %d.%d"),
962 case EXIF_TAG_FLASH_PIX_VERSION:
963 CF (e, EXIF_FORMAT_UNDEFINED, val, maxlen);
964 CC (e, 4, val, maxlen);
965 if (!memcmp (e->data, "0100", 4))
966 strncpy (val, _("FlashPix Version 1.0"), maxlen);
967 else if (!memcmp (e->data, "0101", 4))
968 strncpy (val, _("FlashPix Version 1.01"), maxlen);
970 strncpy (val, _("Unknown FlashPix Version"), maxlen);
972 case EXIF_TAG_COPYRIGHT:
973 CF (e, EXIF_FORMAT_ASCII, val, maxlen);
976 * First part: Photographer.
977 * Some cameras store a string like " " here. Ignore it.
978 * Remember that a corrupted tag might not be NUL-terminated
980 if (e->size && e->data && match_repeated_char(e->data, ' ', e->size))
981 strncpy (val, (char *) e->data, MIN (maxlen, e->size));
983 strncpy (val, _("[None]"), maxlen);
984 strncat (val, " ", maxlen - strlen (val));
985 strncat (val, _("(Photographer)"), maxlen - strlen (val));
987 /* Second part: Editor. */
988 strncat (val, " - ", maxlen - strlen (val));
990 if (e->size && e->data) {
991 const unsigned char *tagdata = memchr(e->data, 0, e->size);
993 int editor_ofs = tagdata - e->data;
994 int remaining = e->size - editor_ofs;
995 if (match_repeated_char(tagdata, ' ', remaining)) {
996 strncat (val, (const char*)tagdata, MIN (maxlen - strlen (val), remaining));
1002 strncat (val, _("[None]"), maxlen - strlen (val));
1003 strncat (val, " ", maxlen - strlen (val));
1004 strncat (val, _("(Editor)"), maxlen - strlen (val));
1007 case EXIF_TAG_FNUMBER:
1008 CF (e, EXIF_FORMAT_RATIONAL, val, maxlen);
1009 CC (e, 1, val, maxlen);
1010 v_rat = exif_get_rational (e->data, o);
1011 if (!v_rat.denominator) {
1012 exif_entry_format_value(e, val, maxlen);
1015 d = (double) v_rat.numerator / (double) v_rat.denominator;
1016 snprintf (val, maxlen, "f/%.01f", d);
1018 case EXIF_TAG_APERTURE_VALUE:
1019 case EXIF_TAG_MAX_APERTURE_VALUE:
1020 CF (e, EXIF_FORMAT_RATIONAL, val, maxlen);
1021 CC (e, 1, val, maxlen);
1022 v_rat = exif_get_rational (e->data, o);
1023 if (!v_rat.denominator || (0x80000000 == v_rat.numerator)) {
1024 exif_entry_format_value(e, val, maxlen);
1027 d = (double) v_rat.numerator / (double) v_rat.denominator;
1028 snprintf (val, maxlen, _("%.02f EV"), d);
1029 snprintf (b, sizeof (b), _(" (f/%.01f)"), pow (2, d / 2.));
1030 if (maxlen > strlen (val) + strlen (b))
1031 strncat (val, b, maxlen - strlen (val));
1033 case EXIF_TAG_FOCAL_LENGTH:
1034 CF (e, EXIF_FORMAT_RATIONAL, val, maxlen);
1035 CC (e, 1, val, maxlen);
1036 v_rat = exif_get_rational (e->data, o);
1037 if (!v_rat.denominator) {
1038 exif_entry_format_value(e, val, maxlen);
1043 * For calculation of the 35mm equivalent,
1044 * Minolta cameras need a multiplier that depends on the
1048 entry = exif_content_get_entry (
1049 e->parent->parent->ifd[EXIF_IFD_0], EXIF_TAG_MAKE);
1050 if (entry && entry->data &&
1051 !strncmp ((char *)entry->data, "Minolta", 7)) {
1052 entry = exif_content_get_entry (
1053 e->parent->parent->ifd[EXIF_IFD_0],
1055 if (entry && entry->data) {
1056 if (!strncmp ((char *)entry->data, "DiMAGE 7", 8))
1058 else if (!strncmp ((char *)entry->data, "DiMAGE 5", 8))
1063 snprintf (b, sizeof (b), _(" (35 equivalent: %d mm)"),
1064 (int) (d * (double) v_rat.numerator /
1065 (double) v_rat.denominator));
1067 d = (double) v_rat.numerator / (double) v_rat.denominator;
1068 snprintf (val, maxlen, "%.1f mm", d);
1069 if (maxlen > strlen (val) + strlen (b))
1070 strncat (val, b, maxlen - strlen (val));
1072 case EXIF_TAG_SUBJECT_DISTANCE:
1073 CF (e, EXIF_FORMAT_RATIONAL, val, maxlen);
1074 CC (e, 1, val, maxlen);
1075 v_rat = exif_get_rational (e->data, o);
1076 if (!v_rat.denominator) {
1077 exif_entry_format_value(e, val, maxlen);
1080 d = (double) v_rat.numerator / (double) v_rat.denominator;
1081 snprintf (val, maxlen, "%.1f m", d);
1083 case EXIF_TAG_EXPOSURE_TIME:
1084 CF (e, EXIF_FORMAT_RATIONAL, val, maxlen);
1085 CC (e, 1, val, maxlen);
1086 v_rat = exif_get_rational (e->data, o);
1087 if (!v_rat.denominator) {
1088 exif_entry_format_value(e, val, maxlen);
1091 d = (double) v_rat.numerator / (double) v_rat.denominator;
1093 snprintf (val, maxlen, _("1/%i"), (int) (0.5 + 1. / d));
1095 snprintf (val, maxlen, "%i", (int) d);
1096 if (maxlen > strlen (val) + strlen (_(" sec.")))
1097 strncat (val, _(" sec."), maxlen - strlen (val));
1099 case EXIF_TAG_SHUTTER_SPEED_VALUE:
1100 CF (e, EXIF_FORMAT_SRATIONAL, val, maxlen);
1101 CC (e, 1, val, maxlen);
1102 v_srat = exif_get_srational (e->data, o);
1103 if (!v_srat.denominator) {
1104 exif_entry_format_value(e, val, maxlen);
1107 d = (double) v_srat.numerator / (double) v_srat.denominator;
1108 snprintf (val, maxlen, _("%.02f EV"), d);
1109 d = 1. / pow (2, d);
1111 snprintf (b, sizeof (b), _(" (1/%d sec.)"), (int) (1. / d));
1113 snprintf (b, sizeof (b), _(" (%d sec.)"), (int) d);
1114 strncat (val, b, maxlen - strlen (val));
1116 case EXIF_TAG_BRIGHTNESS_VALUE:
1117 CF (e, EXIF_FORMAT_SRATIONAL, val, maxlen);
1118 CC (e, 1, val, maxlen);
1119 v_srat = exif_get_srational (e->data, o);
1120 if (!v_srat.denominator) {
1121 exif_entry_format_value(e, val, maxlen);
1124 d = (double) v_srat.numerator / (double) v_srat.denominator;
1125 snprintf (val, maxlen, _("%.02f EV"), d);
1126 snprintf (b, sizeof (b), _(" (%.02f cd/m^2)"),
1127 1. / (M_PI * 0.3048 * 0.3048) * pow (2, d));
1128 if (maxlen > strlen (val) + strlen (b))
1129 strncat (val, b, maxlen - strlen (val));
1131 case EXIF_TAG_FILE_SOURCE:
1132 CF (e, EXIF_FORMAT_UNDEFINED, val, maxlen);
1133 CC (e, 1, val, maxlen);
1134 v_byte = e->data[0];
1136 strncpy (val, _("DSC"), maxlen);
1138 snprintf (val, maxlen, _("Internal error (unknown "
1139 "value %i)"), v_byte);
1141 case EXIF_TAG_COMPONENTS_CONFIGURATION:
1142 CF (e, EXIF_FORMAT_UNDEFINED, val, maxlen);
1143 CC (e, 4, val, maxlen);
1144 for (i = 0; i < 4; i++) {
1145 switch (e->data[i]) {
1146 case 0: c = _("-"); break;
1147 case 1: c = _("Y"); break;
1148 case 2: c = _("Cb"); break;
1149 case 3: c = _("Cr"); break;
1150 case 4: c = _("R"); break;
1151 case 5: c = _("G"); break;
1152 case 6: c = _("B"); break;
1153 default: c = _("Reserved"); break;
1155 strncat (val, c, maxlen - strlen (val));
1157 strncat (val, " ", maxlen - strlen (val));
1160 case EXIF_TAG_EXPOSURE_BIAS_VALUE:
1161 CF (e, EXIF_FORMAT_SRATIONAL, val, maxlen);
1162 CC (e, 1, val, maxlen);
1163 v_srat = exif_get_srational (e->data, o);
1164 if (!v_srat.denominator) {
1165 exif_entry_format_value(e, val, maxlen);
1168 d = (double) v_srat.numerator / (double) v_srat.denominator;
1169 snprintf (val, maxlen, _("%.02f EV"), d);
1171 case EXIF_TAG_SCENE_TYPE:
1172 CF (e, EXIF_FORMAT_UNDEFINED, val, maxlen);
1173 CC (e, 1, val, maxlen);
1174 v_byte = e->data[0];
1176 strncpy (val, _("Directly photographed"), maxlen);
1178 snprintf (val, maxlen, _("Internal error (unknown "
1179 "value %i)"), v_byte);
1181 case EXIF_TAG_YCBCR_SUB_SAMPLING:
1182 CF (e, EXIF_FORMAT_SHORT, val, maxlen);
1183 CC (e, 2, val, maxlen);
1184 v_short = exif_get_short (e->data, o);
1185 v_short2 = exif_get_short (
1186 e->data + exif_format_get_size (e->format),
1188 if ((v_short == 2) && (v_short2 == 1))
1189 strncpy (val, _("YCbCr4:2:2"), maxlen);
1190 else if ((v_short == 2) && (v_short2 == 2))
1191 strncpy (val, _("YCbCr4:2:0"), maxlen);
1193 snprintf (val, maxlen, "%u, %u", v_short, v_short2);
1195 case EXIF_TAG_SUBJECT_AREA:
1196 CF (e, EXIF_FORMAT_SHORT, val, maxlen);
1197 switch (e->components) {
1199 v_short = exif_get_short (e->data, o);
1200 v_short2 = exif_get_short (e->data + 2, o);
1201 snprintf (val, maxlen, "(x,y) = (%i,%i)",
1205 v_short = exif_get_short (e->data, o);
1206 v_short2 = exif_get_short (e->data + 2, o);
1207 v_short3 = exif_get_short (e->data + 4, o);
1208 snprintf (val, maxlen, _("Within distance %i of "
1209 "(x,y) = (%i,%i)"), v_short3, v_short,
1213 v_short = exif_get_short (e->data, o);
1214 v_short2 = exif_get_short (e->data + 2, o);
1215 v_short3 = exif_get_short (e->data + 4, o);
1216 v_short4 = exif_get_short (e->data + 6, o);
1217 snprintf (val, maxlen, _("Within rectangle "
1218 "(width %i, height %i) around "
1219 "(x,y) = (%i,%i)"), v_short3, v_short4,
1223 snprintf (val, maxlen, _("Unexpected number "
1224 "of components (%li, expected 2, 3, or 4)."),
1228 case EXIF_TAG_GPS_VERSION_ID:
1229 /* This is only valid in the GPS IFD */
1230 CF (e, EXIF_FORMAT_BYTE, val, maxlen);
1231 CC (e, 4, val, maxlen);
1232 v_byte = e->data[0];
1233 snprintf (val, maxlen, "%u", v_byte);
1234 maxlen -= strlen (val);
1235 for (i = 1; i < e->components; i++) {
1236 v_byte = e->data[i];
1237 snprintf (b, sizeof (b), ".%u", v_byte);
1238 strncat (val, b, maxlen);
1239 maxlen -= strlen (b);
1240 if ((signed)maxlen <= 0) break;
1243 case EXIF_TAG_INTEROPERABILITY_VERSION:
1244 /* a.k.a. case EXIF_TAG_GPS_LATITUDE: */
1245 /* This tag occurs in EXIF_IFD_INTEROPERABILITY */
1246 if (e->format == EXIF_FORMAT_UNDEFINED) {
1247 strncpy (val, (char *) e->data, MIN (maxlen, e->size));
1250 /* EXIF_TAG_GPS_LATITUDE is the same numerically as
1251 * EXIF_TAG_INTEROPERABILITY_VERSION but in EXIF_IFD_GPS
1253 exif_entry_format_value(e, val, maxlen);
1255 case EXIF_TAG_GPS_ALTITUDE_REF:
1256 /* This is only valid in the GPS IFD */
1257 CF (e, EXIF_FORMAT_BYTE, val, maxlen);
1258 CC (e, 1, val, maxlen);
1259 v_byte = e->data[0];
1261 strncpy (val, _("Sea level"), maxlen);
1262 else if (v_byte == 1)
1263 strncpy (val, _("Sea level reference"), maxlen);
1265 snprintf (val, maxlen, _("Internal error (unknown "
1266 "value %i)"), v_byte);
1268 case EXIF_TAG_GPS_TIME_STAMP:
1269 /* This is only valid in the GPS IFD */
1270 CF (e, EXIF_FORMAT_RATIONAL, val, maxlen);
1271 CC (e, 3, val, maxlen);
1273 v_rat = exif_get_rational (e->data, o);
1274 if (!v_rat.denominator) {
1275 exif_entry_format_value(e, val, maxlen);
1278 i = v_rat.numerator / v_rat.denominator;
1280 v_rat = exif_get_rational (e->data +
1281 exif_format_get_size (e->format),
1283 if (!v_rat.denominator) {
1284 exif_entry_format_value(e, val, maxlen);
1287 j = v_rat.numerator / v_rat.denominator;
1289 v_rat = exif_get_rational (e->data +
1290 2*exif_format_get_size (e->format),
1292 if (!v_rat.denominator) {
1293 exif_entry_format_value(e, val, maxlen);
1296 d = (double) v_rat.numerator / (double) v_rat.denominator;
1297 snprintf (val, maxlen, "%02u:%02u:%05.2f", i, j, d);
1300 case EXIF_TAG_METERING_MODE:
1301 case EXIF_TAG_COMPRESSION:
1302 case EXIF_TAG_LIGHT_SOURCE:
1303 case EXIF_TAG_FOCAL_PLANE_RESOLUTION_UNIT:
1304 case EXIF_TAG_RESOLUTION_UNIT:
1305 case EXIF_TAG_EXPOSURE_PROGRAM:
1306 case EXIF_TAG_FLASH:
1307 case EXIF_TAG_SUBJECT_DISTANCE_RANGE:
1308 case EXIF_TAG_COLOR_SPACE:
1309 CF (e,EXIF_FORMAT_SHORT, val, maxlen);
1310 CC (e, 1, val, maxlen);
1311 v_short = exif_get_short (e->data, o);
1313 /* Search the tag */
1314 for (i = 0; list2[i].tag && (list2[i].tag != e->tag); i++);
1315 if (!list2[i].tag) {
1316 snprintf (val, maxlen, _("Internal error (unknown "
1317 "value %i)"), v_short);
1321 /* Find the value */
1322 for (j = 0; list2[i].elem[j].values[0] &&
1323 (list2[i].elem[j].index < v_short); j++);
1324 if (list2[i].elem[j].index != v_short) {
1325 snprintf (val, maxlen, _("Internal error (unknown "
1326 "value %i)"), v_short);
1330 /* Find a short enough value */
1331 memset (val, 0, maxlen);
1332 for (k = 0; list2[i].elem[j].values[k]; k++) {
1333 size_t l = strlen (_(list2[i].elem[j].values[k]));
1334 if ((maxlen > l) && (strlen (val) < l))
1335 strncpy (val, _(list2[i].elem[j].values[k]), maxlen);
1337 if (!val[0]) snprintf (val, maxlen, "%i", v_short);
1341 case EXIF_TAG_PLANAR_CONFIGURATION:
1342 case EXIF_TAG_SENSING_METHOD:
1343 case EXIF_TAG_ORIENTATION:
1344 case EXIF_TAG_YCBCR_POSITIONING:
1345 case EXIF_TAG_PHOTOMETRIC_INTERPRETATION:
1346 case EXIF_TAG_CUSTOM_RENDERED:
1347 case EXIF_TAG_EXPOSURE_MODE:
1348 case EXIF_TAG_WHITE_BALANCE:
1349 case EXIF_TAG_SCENE_CAPTURE_TYPE:
1350 case EXIF_TAG_GAIN_CONTROL:
1351 case EXIF_TAG_SATURATION:
1352 case EXIF_TAG_CONTRAST:
1353 case EXIF_TAG_SHARPNESS:
1354 CF (e, EXIF_FORMAT_SHORT, val, maxlen);
1355 CC (e, 1, val, maxlen);
1356 v_short = exif_get_short (e->data, o);
1358 /* Search the tag */
1359 for (i = 0; list[i].tag && (list[i].tag != e->tag); i++);
1361 snprintf (val, maxlen, _("Internal error (unknown "
1362 "value %i)"), v_short);
1366 /* Find the value */
1367 for (j = 0; list[i].strings[j] && (j < v_short); j++);
1368 if (!list[i].strings[j])
1369 snprintf (val, maxlen, "%i", v_short);
1370 else if (!*list[i].strings[j])
1371 snprintf (val, maxlen, _("Unknown value %i"), v_short);
1373 strncpy (val, _(list[i].strings[j]), maxlen);
1376 case EXIF_TAG_XP_TITLE:
1377 case EXIF_TAG_XP_COMMENT:
1378 case EXIF_TAG_XP_AUTHOR:
1379 case EXIF_TAG_XP_KEYWORDS:
1380 case EXIF_TAG_XP_SUBJECT:
1382 /* Sanity check the size to prevent overflow */
1383 if (e->size+sizeof(unsigned short) < e->size) break;
1385 /* The tag may not be U+0000-terminated , so make a local
1386 U+0000-terminated copy before converting it */
1387 unsigned short *utf16 = exif_mem_alloc (e->priv->mem, e->size+sizeof(unsigned short));
1389 memcpy(utf16, e->data, e->size);
1390 utf16[e->size/sizeof(unsigned short)] = 0;
1392 /* Warning! The texts are converted from UTF16 to UTF8 */
1393 /* FIXME: use iconv to convert into the locale encoding */
1394 exif_convert_utf16_to_utf8(val, utf16, maxlen);
1395 exif_mem_free(e->priv->mem, utf16);
1400 /* Use a generic value formatting */
1401 exif_entry_format_value(e, val, maxlen);
1409 * \bug Log and report failed exif_mem_malloc() calls.
1412 exif_entry_initialize (ExifEntry *e, ExifTag tag)
1417 /* We need the byte order */
1418 if (!e || !e->parent || e->data || !e->parent->parent)
1420 o = exif_data_get_byte_order (e->parent->parent);
1425 /* LONG, 1 component, no default */
1426 case EXIF_TAG_PIXEL_X_DIMENSION:
1427 case EXIF_TAG_PIXEL_Y_DIMENSION:
1428 case EXIF_TAG_EXIF_IFD_POINTER:
1429 case EXIF_TAG_GPS_INFO_IFD_POINTER:
1430 case EXIF_TAG_INTEROPERABILITY_IFD_POINTER:
1431 case EXIF_TAG_JPEG_INTERCHANGE_FORMAT_LENGTH:
1432 case EXIF_TAG_JPEG_INTERCHANGE_FORMAT:
1434 e->format = EXIF_FORMAT_LONG;
1435 e->size = exif_format_get_size (e->format) * e->components;
1436 e->data = exif_entry_alloc (e, e->size);
1437 if (!e->data) break;
1440 /* SHORT, 1 component, no default */
1441 case EXIF_TAG_SUBJECT_LOCATION:
1442 case EXIF_TAG_SENSING_METHOD:
1443 case EXIF_TAG_PHOTOMETRIC_INTERPRETATION:
1444 case EXIF_TAG_COMPRESSION:
1445 case EXIF_TAG_EXPOSURE_MODE:
1446 case EXIF_TAG_WHITE_BALANCE:
1447 case EXIF_TAG_FOCAL_LENGTH_IN_35MM_FILM:
1448 case EXIF_TAG_GAIN_CONTROL:
1449 case EXIF_TAG_SUBJECT_DISTANCE_RANGE:
1450 case EXIF_TAG_FLASH:
1451 case EXIF_TAG_ISO_SPEED_RATINGS:
1453 /* SHORT, 1 component, default 0 */
1454 case EXIF_TAG_IMAGE_WIDTH:
1455 case EXIF_TAG_IMAGE_LENGTH:
1456 case EXIF_TAG_EXPOSURE_PROGRAM:
1457 case EXIF_TAG_LIGHT_SOURCE:
1458 case EXIF_TAG_METERING_MODE:
1459 case EXIF_TAG_CUSTOM_RENDERED:
1460 case EXIF_TAG_SCENE_CAPTURE_TYPE:
1461 case EXIF_TAG_CONTRAST:
1462 case EXIF_TAG_SATURATION:
1463 case EXIF_TAG_SHARPNESS:
1465 e->format = EXIF_FORMAT_SHORT;
1466 e->size = exif_format_get_size (e->format) * e->components;
1467 e->data = exif_entry_alloc (e, e->size);
1468 if (!e->data) break;
1469 exif_set_short (e->data, o, 0);
1472 /* SHORT, 1 component, default 1 */
1473 case EXIF_TAG_ORIENTATION:
1474 case EXIF_TAG_PLANAR_CONFIGURATION:
1475 case EXIF_TAG_YCBCR_POSITIONING:
1477 e->format = EXIF_FORMAT_SHORT;
1478 e->size = exif_format_get_size (e->format) * e->components;
1479 e->data = exif_entry_alloc (e, e->size);
1480 if (!e->data) break;
1481 exif_set_short (e->data, o, 1);
1484 /* SHORT, 1 component, default 2 */
1485 case EXIF_TAG_RESOLUTION_UNIT:
1486 case EXIF_TAG_FOCAL_PLANE_RESOLUTION_UNIT:
1488 e->format = EXIF_FORMAT_SHORT;
1489 e->size = exif_format_get_size (e->format) * e->components;
1490 e->data = exif_entry_alloc (e, e->size);
1491 if (!e->data) break;
1492 exif_set_short (e->data, o, 2);
1495 /* SHORT, 1 component, default 3 */
1496 case EXIF_TAG_SAMPLES_PER_PIXEL:
1498 e->format = EXIF_FORMAT_SHORT;
1499 e->size = exif_format_get_size (e->format) * e->components;
1500 e->data = exif_entry_alloc (e, e->size);
1501 if (!e->data) break;
1502 exif_set_short (e->data, o, 3);
1505 /* SHORT, 1 component, default 0xffff */
1506 case EXIF_TAG_COLOR_SPACE:
1508 e->format = EXIF_FORMAT_SHORT;
1509 e->size = exif_format_get_size (e->format) * e->components;
1510 e->data = exif_entry_alloc (e, e->size);
1511 if (!e->data) break;
1512 exif_set_short (e->data, o, 0xffff);
1515 /* SHORT, 3 components, default 8 8 8 */
1516 case EXIF_TAG_BITS_PER_SAMPLE:
1518 e->format = EXIF_FORMAT_SHORT;
1519 e->size = exif_format_get_size (e->format) * e->components;
1520 e->data = exif_entry_alloc (e, e->size);
1521 if (!e->data) break;
1522 exif_set_short (e->data, o, 8);
1524 e->data + exif_format_get_size (e->format),
1527 e->data + 2 * exif_format_get_size (e->format),
1531 /* SHORT, 2 components, default 2 1 */
1532 case EXIF_TAG_YCBCR_SUB_SAMPLING:
1534 e->format = EXIF_FORMAT_SHORT;
1535 e->size = exif_format_get_size (e->format) * e->components;
1536 e->data = exif_entry_alloc (e, e->size);
1537 if (!e->data) break;
1538 exif_set_short (e->data, o, 2);
1540 e->data + exif_format_get_size (e->format),
1544 /* SRATIONAL, 1 component, no default */
1545 case EXIF_TAG_EXPOSURE_BIAS_VALUE:
1546 case EXIF_TAG_BRIGHTNESS_VALUE:
1547 case EXIF_TAG_SHUTTER_SPEED_VALUE:
1549 e->format = EXIF_FORMAT_SRATIONAL;
1550 e->size = exif_format_get_size (e->format) * e->components;
1551 e->data = exif_entry_alloc (e, e->size);
1552 if (!e->data) break;
1555 /* RATIONAL, 1 component, no default */
1556 case EXIF_TAG_EXPOSURE_TIME:
1557 case EXIF_TAG_FOCAL_PLANE_X_RESOLUTION:
1558 case EXIF_TAG_FOCAL_PLANE_Y_RESOLUTION:
1559 case EXIF_TAG_EXPOSURE_INDEX:
1560 case EXIF_TAG_FLASH_ENERGY:
1561 case EXIF_TAG_FNUMBER:
1562 case EXIF_TAG_FOCAL_LENGTH:
1563 case EXIF_TAG_SUBJECT_DISTANCE:
1564 case EXIF_TAG_MAX_APERTURE_VALUE:
1565 case EXIF_TAG_APERTURE_VALUE:
1566 case EXIF_TAG_COMPRESSED_BITS_PER_PIXEL:
1567 case EXIF_TAG_PRIMARY_CHROMATICITIES:
1568 case EXIF_TAG_DIGITAL_ZOOM_RATIO:
1570 e->format = EXIF_FORMAT_RATIONAL;
1571 e->size = exif_format_get_size (e->format) * e->components;
1572 e->data = exif_entry_alloc (e, e->size);
1573 if (!e->data) break;
1576 /* RATIONAL, 1 component, default 72/1 */
1577 case EXIF_TAG_X_RESOLUTION:
1578 case EXIF_TAG_Y_RESOLUTION:
1580 e->format = EXIF_FORMAT_RATIONAL;
1581 e->size = exif_format_get_size (e->format) * e->components;
1582 e->data = exif_entry_alloc (e, e->size);
1583 if (!e->data) break;
1586 exif_set_rational (e->data, o, r);
1589 /* RATIONAL, 2 components, no default */
1590 case EXIF_TAG_WHITE_POINT:
1592 e->format = EXIF_FORMAT_RATIONAL;
1593 e->size = exif_format_get_size (e->format) * e->components;
1594 e->data = exif_entry_alloc (e, e->size);
1595 if (!e->data) break;
1598 /* RATIONAL, 6 components */
1599 case EXIF_TAG_REFERENCE_BLACK_WHITE:
1601 e->format = EXIF_FORMAT_RATIONAL;
1602 e->size = exif_format_get_size (e->format) * e->components;
1603 e->data = exif_entry_alloc (e, e->size);
1604 if (!e->data) break;
1607 exif_set_rational (e->data, o, r);
1610 e->data + exif_format_get_size (e->format), o, r);
1613 e->data + 2 * exif_format_get_size (e->format), o, r);
1616 e->data + 3 * exif_format_get_size (e->format), o, r);
1619 e->data + 4 * exif_format_get_size (e->format), o, r);
1622 e->data + 5 * exif_format_get_size (e->format), o, r);
1625 /* ASCII, 20 components */
1626 case EXIF_TAG_DATE_TIME:
1627 case EXIF_TAG_DATE_TIME_ORIGINAL:
1628 case EXIF_TAG_DATE_TIME_DIGITIZED:
1631 #ifdef HAVE_LOCALTIME_R
1637 #ifdef HAVE_LOCALTIME_R
1638 tm = localtime_r (&t, &tms);
1640 tm = localtime (&t);
1643 e->format = EXIF_FORMAT_ASCII;
1644 e->size = exif_format_get_size (e->format) * e->components;
1645 e->data = exif_entry_alloc (e, e->size);
1646 if (!e->data) break;
1647 snprintf ((char *) e->data, e->size,
1648 "%04i:%02i:%02i %02i:%02i:%02i",
1649 tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
1650 tm->tm_hour, tm->tm_min, tm->tm_sec);
1654 /* ASCII, no default */
1655 case EXIF_TAG_SUB_SEC_TIME:
1656 case EXIF_TAG_SUB_SEC_TIME_ORIGINAL:
1657 case EXIF_TAG_SUB_SEC_TIME_DIGITIZED:
1659 e->format = EXIF_FORMAT_ASCII;
1664 /* ASCII, default "[None]" */
1665 case EXIF_TAG_IMAGE_DESCRIPTION:
1667 case EXIF_TAG_MODEL:
1668 case EXIF_TAG_SOFTWARE:
1669 case EXIF_TAG_ARTIST:
1670 e->components = strlen (_("[None]")) + 1;
1671 e->format = EXIF_FORMAT_ASCII;
1672 e->size = exif_format_get_size (e->format) * e->components;
1673 e->data = exif_entry_alloc (e, e->size);
1674 if (!e->data) break;
1675 strncpy ((char *)e->data, _("[None]"), e->size);
1677 /* ASCII, default "[None]\0[None]\0" */
1678 case EXIF_TAG_COPYRIGHT:
1679 e->components = (strlen (_("[None]")) + 1) * 2;
1680 e->format = EXIF_FORMAT_ASCII;
1681 e->size = exif_format_get_size (e->format) * e->components;
1682 e->data = exif_entry_alloc (e, e->size);
1683 if (!e->data) break;
1684 strcpy (((char *)e->data) + 0, _("[None]"));
1685 strcpy (((char *)e->data) + strlen (_("[None]")) + 1, _("[None]"));
1688 /* UNDEFINED, 1 component, default 1 */
1689 case EXIF_TAG_SCENE_TYPE:
1691 e->format = EXIF_FORMAT_UNDEFINED;
1692 e->size = exif_format_get_size (e->format) * e->components;
1693 e->data = exif_entry_alloc (e, e->size);
1694 if (!e->data) break;
1698 /* UNDEFINED, 1 component, default 3 */
1699 case EXIF_TAG_FILE_SOURCE:
1701 e->format = EXIF_FORMAT_UNDEFINED;
1702 e->size = exif_format_get_size (e->format) * e->components;
1703 e->data = exif_entry_alloc (e, e->size);
1704 if (!e->data) break;
1708 /* UNDEFINED, 4 components, default 48 49 48 48 */
1709 case EXIF_TAG_FLASH_PIX_VERSION:
1711 e->format = EXIF_FORMAT_UNDEFINED;
1712 e->size = exif_format_get_size (e->format) * e->components;
1713 e->data = exif_entry_alloc (e, e->size);
1714 if (!e->data) break;
1715 memcpy (e->data, "0100", 4);
1718 /* UNDEFINED, 4 components, default 48 50 49 48 */
1719 case EXIF_TAG_EXIF_VERSION:
1721 e->format = EXIF_FORMAT_UNDEFINED;
1722 e->size = exif_format_get_size (e->format) * e->components;
1723 e->data = exif_entry_alloc (e, e->size);
1724 if (!e->data) break;
1725 memcpy (e->data, "0210", 4);
1728 /* UNDEFINED, 4 components, default 1 2 3 0 */
1729 case EXIF_TAG_COMPONENTS_CONFIGURATION:
1731 e->format = EXIF_FORMAT_UNDEFINED;
1732 e->size = exif_format_get_size (e->format) * e->components;
1733 e->data = exif_entry_alloc (e, e->size);
1734 if (!e->data) break;
1741 /* UNDEFINED, no components, no default */
1742 /* Use this if the tag is otherwise unsupported */
1743 case EXIF_TAG_MAKER_NOTE:
1744 case EXIF_TAG_USER_COMMENT:
1747 e->format = EXIF_FORMAT_UNDEFINED;