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 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)
460 case EXIF_FORMAT_UNDEFINED:
461 snprintf (val, maxlen, _("%i bytes undefined data"), e->size);
463 case EXIF_FORMAT_BYTE:
464 case EXIF_FORMAT_SBYTE:
466 snprintf (val, maxlen, "0x%02x", v_byte);
468 for (i = 1; i < e->components; i++) {
470 snprintf (val+len, maxlen-len, ", 0x%02x", v_byte);
471 len += strlen (val+len);
472 if (len >= maxlen-1) break;
475 case EXIF_FORMAT_SHORT:
476 v_short = exif_get_short (e->data, o);
477 snprintf (val, maxlen, "%u", v_short);
479 for (i = 1; i < e->components; i++) {
480 v_short = exif_get_short (e->data +
481 exif_format_get_size (e->format) * i, o);
482 snprintf (val+len, maxlen-len, ", %u", v_short);
483 len += strlen (val+len);
484 if (len >= maxlen-1) break;
487 case EXIF_FORMAT_SSHORT:
488 v_sshort = exif_get_sshort (e->data, o);
489 snprintf (val, maxlen, "%i", v_sshort);
491 for (i = 1; i < e->components; i++) {
492 v_sshort = exif_get_short (e->data +
493 exif_format_get_size (e->format) *
495 snprintf (val+len, maxlen-len, ", %i", v_sshort);
496 len += strlen (val+len);
497 if (len >= maxlen-1) break;
500 case EXIF_FORMAT_LONG:
501 v_long = exif_get_long (e->data, o);
502 snprintf (val, maxlen, "%lu", (unsigned long) v_long);
504 for (i = 1; i < e->components; i++) {
505 v_long = exif_get_long (e->data +
506 exif_format_get_size (e->format) *
508 snprintf (val+len, maxlen-len, ", %lu", (unsigned long) v_long);
509 len += strlen (val+len);
510 if (len >= maxlen-1) break;
513 case EXIF_FORMAT_SLONG:
514 v_slong = exif_get_slong (e->data, o);
515 snprintf (val, maxlen, "%li", (long) v_slong);
517 for (i = 1; i < e->components; i++) {
518 v_slong = exif_get_slong (e->data +
519 exif_format_get_size (e->format) * i, o);
520 snprintf (val+len, maxlen-len, ", %li", (long) v_slong);
521 len += strlen (val+len);
522 if (len >= maxlen-1) break;
525 case EXIF_FORMAT_ASCII:
526 strncpy (val, (char *) e->data, MIN (maxlen-1, e->size));
527 val[MIN (maxlen-1, e->size)] = 0;
529 case EXIF_FORMAT_RATIONAL:
531 for (i = 0; i < e->components; i++) {
533 snprintf (val+len, maxlen-len, ", ");
534 len += strlen (val+len);
536 v_rat = exif_get_rational (
538 if (v_rat.denominator) {
540 * Choose the number of significant digits to
541 * display based on the size of the denominator.
542 * It is scaled so that denominators within the
543 * range 13..120 will show 2 decimal points.
545 int decimals = (int)(log10(v_rat.denominator)-0.08+1.0);
546 snprintf (val+len, maxlen-len, "%2.*f",
548 (double) v_rat.numerator /
549 (double) v_rat.denominator);
551 snprintf (val+len, maxlen-len, "%lu/%lu",
552 (unsigned long) v_rat.numerator,
553 (unsigned long) v_rat.denominator);
554 len += strlen (val+len);
555 if (len >= maxlen-1) break;
558 case EXIF_FORMAT_SRATIONAL:
560 for (i = 0; i < e->components; i++) {
562 snprintf (val+len, maxlen-len, ", ");
563 len += strlen (val+len);
565 v_srat = exif_get_srational (
567 if (v_srat.denominator) {
568 int decimals = (int)(log10(fabs(v_srat.denominator))-0.08+1.0);
569 snprintf (val+len, maxlen-len, "%2.*f",
571 (double) v_srat.numerator /
572 (double) v_srat.denominator);
574 snprintf (val+len, maxlen-len, "%li/%li",
575 (long) v_srat.numerator,
576 (long) v_srat.denominator);
577 len += strlen (val+len);
578 if (len >= maxlen-1) break;
581 case EXIF_FORMAT_DOUBLE:
582 case EXIF_FORMAT_FLOAT:
584 snprintf (val, maxlen, _("%i bytes unsupported data type"),
591 exif_entry_dump (ExifEntry *e, unsigned int indent)
597 for (i = 0; i < 2 * indent; i++)
604 printf ("%sTag: 0x%x ('%s')\n", buf, e->tag,
605 exif_tag_get_name_in_ifd (e->tag, exif_entry_get_ifd(e)));
606 printf ("%s Format: %i ('%s')\n", buf, e->format,
607 exif_format_get_name (e->format));
608 printf ("%s Components: %i\n", buf, (int) e->components);
609 printf ("%s Size: %i\n", buf, e->size);
610 printf ("%s Value: %s\n", buf, exif_entry_get_value (e, value, sizeof(value)));
613 /*! Check if a string consists entirely of a single, repeated character.
614 * Up to first n bytes are checked.
616 * \param[in] data pointer of string to check
617 * \param[in] ch character to match
618 * \param[in] n maximum number of characters to match
620 * \return 0 if the string matches or is of zero length, nonzero otherwise
623 match_repeated_char(const unsigned char *data, unsigned char ch, size_t n)
626 for (i=n; i; --i, ++data) {
628 i = 0; /* all bytes before NUL matched */
637 #define CF(entry,target,v,maxlen) \
639 if (entry->format != target) { \
640 exif_entry_log (entry, EXIF_LOG_CODE_CORRUPT_DATA, \
641 _("The tag '%s' contains data of an invalid " \
642 "format ('%s', expected '%s')."), \
643 exif_tag_get_name (entry->tag), \
644 exif_format_get_name (entry->format), \
645 exif_format_get_name (target)); \
650 #define CC(entry,target,v,maxlen) \
652 if (entry->components != target) { \
653 exif_entry_log (entry, EXIF_LOG_CODE_CORRUPT_DATA, \
654 _("The tag '%s' contains an invalid number of " \
655 "components (%i, expected %i)."), \
656 exif_tag_get_name (entry->tag), \
657 (int) entry->components, (int) target); \
662 static const struct {
664 const char *strings[10];
666 #ifndef NO_VERBOSE_TAG_DATA
667 { EXIF_TAG_PLANAR_CONFIGURATION,
668 { N_("Chunky format"), N_("Planar format"), NULL}},
669 { EXIF_TAG_SENSING_METHOD,
670 { "", N_("Not defined"), N_("One-chip color area sensor"),
671 N_("Two-chip color area sensor"), N_("Three-chip color area sensor"),
672 N_("Color sequential area sensor"), "", N_("Trilinear sensor"),
673 N_("Color sequential linear sensor"), NULL}},
674 { EXIF_TAG_ORIENTATION,
675 { "", N_("Top-left"), N_("Top-right"), N_("Bottom-right"),
676 N_("Bottom-left"), N_("Left-top"), N_("Right-top"),
677 N_("Right-bottom"), N_("Left-bottom"), NULL}},
678 { EXIF_TAG_YCBCR_POSITIONING,
679 { "", N_("Centered"), N_("Co-sited"), NULL}},
680 { EXIF_TAG_PHOTOMETRIC_INTERPRETATION,
681 { N_("Reversed mono"), N_("Normal mono"), N_("RGB"), N_("Palette"), "",
682 N_("CMYK"), N_("YCbCr"), "", N_("CieLAB"), NULL}},
683 { EXIF_TAG_CUSTOM_RENDERED,
684 { N_("Normal process"), N_("Custom process"), NULL}},
685 { EXIF_TAG_EXPOSURE_MODE,
686 { N_("Auto exposure"), N_("Manual exposure"), N_("Auto bracket"), NULL}},
687 { EXIF_TAG_WHITE_BALANCE,
688 { N_("Auto white balance"), N_("Manual white balance"), NULL}},
689 { EXIF_TAG_SCENE_CAPTURE_TYPE,
690 { N_("Standard"), N_("Landscape"), N_("Portrait"),
691 N_("Night scene"), NULL}},
692 { EXIF_TAG_GAIN_CONTROL,
693 { N_("Normal"), N_("Low gain up"), N_("High gain up"),
694 N_("Low gain down"), N_("High gain down"), NULL}},
695 { EXIF_TAG_SATURATION,
696 { N_("Normal"), N_("Low saturation"), N_("High saturation"), NULL}},
697 { EXIF_TAG_CONTRAST , {N_("Normal"), N_("Soft"), N_("Hard"), NULL}},
698 { EXIF_TAG_SHARPNESS, {N_("Normal"), N_("Soft"), N_("Hard"), NULL}},
703 static const struct {
707 const char *values[4]; /*!< list of progressively shorter string
708 descriptions; the longest one that fits will be
712 #ifndef NO_VERBOSE_TAG_DATA
713 { EXIF_TAG_METERING_MODE,
714 { { 0, {N_("Unknown"), NULL}},
715 { 1, {N_("Average"), N_("Avg"), NULL}},
716 { 2, {N_("Center-weighted average"), N_("Center-weight"), NULL}},
717 { 3, {N_("Spot"), NULL}},
718 { 4, {N_("Multi spot"), NULL}},
719 { 5, {N_("Pattern"), NULL}},
720 { 6, {N_("Partial"), NULL}},
721 {255, {N_("Other"), NULL}},
723 { EXIF_TAG_COMPRESSION,
724 { {1, {N_("Uncompressed"), NULL}},
725 {5, {N_("LZW compression"), NULL}},
726 {6, {N_("JPEG compression"), NULL}},
727 {7, {N_("JPEG compression"), NULL}},
728 {8, {N_("Deflate/ZIP compression"), NULL}},
729 {32773, {N_("PackBits compression"), NULL}},
731 { EXIF_TAG_LIGHT_SOURCE,
732 { { 0, {N_("Unknown"), NULL}},
733 { 1, {N_("Daylight"), NULL}},
734 { 2, {N_("Fluorescent"), NULL}},
735 { 3, {N_("Tungsten incandescent light"), N_("Tungsten"), NULL}},
736 { 4, {N_("Flash"), NULL}},
737 { 9, {N_("Fine weather"), NULL}},
738 { 10, {N_("Cloudy weather"), N_("Cloudy"), NULL}},
739 { 11, {N_("Shade"), NULL}},
740 { 12, {N_("Daylight fluorescent"), NULL}},
741 { 13, {N_("Day white fluorescent"), NULL}},
742 { 14, {N_("Cool white fluorescent"), NULL}},
743 { 15, {N_("White fluorescent"), NULL}},
744 { 17, {N_("Standard light A"), NULL}},
745 { 18, {N_("Standard light B"), NULL}},
746 { 19, {N_("Standard light C"), NULL}},
747 { 20, {N_("D55"), NULL}},
748 { 21, {N_("D65"), NULL}},
749 { 22, {N_("D75"), NULL}},
750 { 24, {N_("ISO studio tungsten"),NULL}},
751 {255, {N_("Other"), NULL}},
753 { EXIF_TAG_FOCAL_PLANE_RESOLUTION_UNIT,
754 { {2, {N_("Inch"), N_("in"), NULL}},
755 {3, {N_("Centimeter"), N_("cm"), NULL}},
757 { EXIF_TAG_RESOLUTION_UNIT,
758 { {2, {N_("Inch"), N_("in"), NULL}},
759 {3, {N_("Centimeter"), N_("cm"), NULL}},
761 { EXIF_TAG_EXPOSURE_PROGRAM,
762 { {0, {N_("Not defined"), NULL}},
763 {1, {N_("Manual"), NULL}},
764 {2, {N_("Normal program"), N_("Normal"), NULL}},
765 {3, {N_("Aperture priority"), N_("Aperture"), NULL}},
766 {4, {N_("Shutter priority"),N_("Shutter"), NULL}},
767 {5, {N_("Creative program (biased toward depth of field)"),
768 N_("Creative"), NULL}},
769 {6, {N_("Creative program (biased toward fast shutter speed)"),
770 N_("Action"), NULL}},
771 {7, {N_("Portrait mode (for closeup photos with the background out "
772 "of focus)"), N_("Portrait"), NULL}},
773 {8, {N_("Landscape mode (for landscape photos with the background "
774 "in focus)"), N_("Landscape"), NULL}},
777 { {0x0000, {N_("Flash did not fire"), N_("No flash"), NULL}},
778 {0x0001, {N_("Flash fired"), N_("Flash"), N_("Yes"), NULL}},
779 {0x0005, {N_("Strobe return light not detected"), N_("Without strobe"),
781 {0x0007, {N_("Strobe return light detected"), N_("With strobe"), NULL}},
782 {0x0008, {N_("Flash did not fire"), NULL}}, /* Olympus E-330 */
783 {0x0009, {N_("Flash fired, compulsory flash mode"), NULL}},
784 {0x000d, {N_("Flash fired, compulsory flash mode, return light "
785 "not detected"), NULL}},
786 {0x000f, {N_("Flash fired, compulsory flash mode, return light "
788 {0x0010, {N_("Flash did not fire, compulsory flash mode"), NULL}},
789 {0x0018, {N_("Flash did not fire, auto mode"), NULL}},
790 {0x0019, {N_("Flash fired, auto mode"), NULL}},
791 {0x001d, {N_("Flash fired, auto mode, return light not detected"),
793 {0x001f, {N_("Flash fired, auto mode, return light detected"), NULL}},
794 {0x0020, {N_("No flash function"),NULL}},
795 {0x0041, {N_("Flash fired, red-eye reduction mode"), NULL}},
796 {0x0045, {N_("Flash fired, red-eye reduction mode, return light "
797 "not detected"), NULL}},
798 {0x0047, {N_("Flash fired, red-eye reduction mode, return light "
800 {0x0049, {N_("Flash fired, compulsory flash mode, red-eye reduction "
802 {0x004d, {N_("Flash fired, compulsory flash mode, red-eye reduction "
803 "mode, return light not detected"), NULL}},
804 {0x004f, {N_("Flash fired, compulsory flash mode, red-eye reduction mode, "
805 "return light detected"), NULL}},
806 {0x0058, {N_("Flash did not fire, auto mode, red-eye reduction mode"), NULL}},
807 {0x0059, {N_("Flash fired, auto mode, red-eye reduction mode"), NULL}},
808 {0x005d, {N_("Flash fired, auto mode, return light not detected, "
809 "red-eye reduction mode"), NULL}},
810 {0x005f, {N_("Flash fired, auto mode, return light detected, "
811 "red-eye reduction mode"), NULL}},
813 { EXIF_TAG_SUBJECT_DISTANCE_RANGE,
814 { {0, {N_("Unknown"), N_("?"), NULL}},
815 {1, {N_("Macro"), NULL}},
816 {2, {N_("Close view"), N_("Close"), NULL}},
817 {3, {N_("Distant view"), N_("Distant"), NULL}},
819 { EXIF_TAG_COLOR_SPACE,
820 { {1, {N_("sRGB"), NULL}},
821 {2, {N_("Adobe RGB"), NULL}},
822 {0xffff, {N_("Uncalibrated"), NULL}},
825 {0, { { 0, {NULL}}} }
829 exif_entry_get_value (ExifEntry *e, char *val, unsigned int maxlen)
831 unsigned int i, j, k;
832 ExifShort v_short, v_short2, v_short3, v_short4;
835 ExifSRational v_srat;
841 static const struct {
855 /* FIXME: This belongs to somewhere else. */
856 /* libexif should use the default system locale.
857 * If an application specifically requires UTF-8, then we
858 * must give the application a way to tell libexif that.
860 * bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
862 bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
864 if (!e || !e->parent || !e->parent->parent || !maxlen)
867 /* make sure the returned string is zero terminated */
868 /* FIXME: this is inefficient in the case of long buffers and should
869 * instead be taken care of on each write instead. */
870 memset (val, 0, maxlen);
872 /* We need the byte order */
873 o = exif_data_get_byte_order (e->parent->parent);
876 if (e->size != e->components * exif_format_get_size (e->format)) {
877 snprintf (val, maxlen, _("Invalid size of entry (%i, "
878 "expected %li x %i)."), e->size, e->components,
879 exif_format_get_size (e->format));
884 case EXIF_TAG_USER_COMMENT:
887 * The specification says UNDEFINED, but some
888 * manufacturers don't care and use ASCII. If this is the
889 * case here, only refuse to read it if there is no chance
890 * of finding readable data.
892 if ((e->format != EXIF_FORMAT_ASCII) ||
894 ( memcmp (e->data, "ASCII\0\0\0" , 8) &&
895 memcmp (e->data, "UNICODE\0" , 8) &&
896 memcmp (e->data, "JIS\0\0\0\0\0", 8) &&
897 memcmp (e->data, "\0\0\0\0\0\0\0\0", 8)))
898 CF (e, EXIF_FORMAT_UNDEFINED, val, maxlen);
901 * Note that, according to the specification (V2.1, p 40),
902 * the user comment field does not have to be
905 if ((e->size >= 8) && !memcmp (e->data, "ASCII\0\0\0", 8)) {
906 strncpy (val, (char *) e->data + 8, MIN (e->size - 8, maxlen-1));
909 if ((e->size >= 8) && !memcmp (e->data, "UNICODE\0", 8)) {
910 strncpy (val, _("Unsupported UNICODE string"), maxlen-1);
911 /* FIXME: use iconv to convert into the locale encoding.
912 * EXIF 2.2 implies (but does not say) that this encoding is
917 if ((e->size >= 8) && !memcmp (e->data, "JIS\0\0\0\0\0", 8)) {
918 strncpy (val, _("Unsupported JIS string"), maxlen-1);
919 /* FIXME: use iconv to convert into the locale encoding */
923 /* Check if there is really some information in the tag. */
924 for (i = 0; (i < e->size) &&
925 (!e->data[i] || (e->data[i] == ' ')); i++);
926 if (i == e->size) break;
929 * If we reach this point, the tag does not
930 * comply with the standard but seems to contain data.
931 * Print as much as possible.
933 exif_entry_log (e, EXIF_LOG_CODE_DEBUG,
934 _("Tag UserComment contains data but is "
935 "against specification."));
936 for (j = 0; (i < e->size) && (j < maxlen); i++, j++) {
937 exif_entry_log (e, EXIF_LOG_CODE_DEBUG,
938 _("Byte at position %i: 0x%02x"), i, e->data[i]);
939 val[j] = isprint (e->data[i]) ? e->data[i] : '.';
943 case EXIF_TAG_EXIF_VERSION:
944 CF (e, EXIF_FORMAT_UNDEFINED, val, maxlen);
945 CC (e, 4, val, maxlen);
946 strncpy (val, _("Unknown Exif Version"), maxlen-1);
947 for (i = 0; *versions[i].label; i++) {
948 if (!memcmp (e->data, versions[i].label, 4)) {
949 snprintf (val, maxlen,
950 _("Exif Version %d.%d"),
957 case EXIF_TAG_FLASH_PIX_VERSION:
958 CF (e, EXIF_FORMAT_UNDEFINED, val, maxlen);
959 CC (e, 4, val, maxlen);
960 if (!memcmp (e->data, "0100", 4))
961 strncpy (val, _("FlashPix Version 1.0"), maxlen-1);
962 else if (!memcmp (e->data, "0101", 4))
963 strncpy (val, _("FlashPix Version 1.01"), maxlen-1);
965 strncpy (val, _("Unknown FlashPix Version"), maxlen-1);
967 case EXIF_TAG_COPYRIGHT:
968 CF (e, EXIF_FORMAT_ASCII, val, maxlen);
971 * First part: Photographer.
972 * Some cameras store a string like " " here. Ignore it.
973 * Remember that a corrupted tag might not be NUL-terminated
975 if (e->size && e->data && match_repeated_char(e->data, ' ', e->size))
976 strncpy (val, (char *) e->data, MIN (maxlen-1, e->size));
978 strncpy (val, _("[None]"), maxlen-1);
979 strncat (val, " ", maxlen-1 - strlen (val));
980 strncat (val, _("(Photographer)"), maxlen-1 - strlen (val));
982 /* Second part: Editor. */
983 strncat (val, " - ", maxlen-1 - strlen (val));
985 if (e->size && e->data) {
986 const unsigned char *tagdata = memchr(e->data, 0, e->size);
988 unsigned int editor_ofs = tagdata - e->data;
989 unsigned int remaining = e->size - editor_ofs;
990 if (match_repeated_char(tagdata, ' ', remaining)) {
991 strncat (val, (const char*)tagdata, MIN (maxlen-1 - strlen (val), remaining));
997 strncat (val, _("[None]"), maxlen-1 - strlen (val));
998 strncat (val, " ", maxlen-1 - strlen (val));
999 strncat (val, _("(Editor)"), maxlen-1 - strlen (val));
1002 case EXIF_TAG_FNUMBER:
1003 CF (e, EXIF_FORMAT_RATIONAL, val, maxlen);
1004 CC (e, 1, val, maxlen);
1005 v_rat = exif_get_rational (e->data, o);
1006 if (!v_rat.denominator) {
1007 exif_entry_format_value(e, val, maxlen);
1010 d = (double) v_rat.numerator / (double) v_rat.denominator;
1011 snprintf (val, maxlen, "f/%.01f", d);
1013 case EXIF_TAG_APERTURE_VALUE:
1014 case EXIF_TAG_MAX_APERTURE_VALUE:
1015 CF (e, EXIF_FORMAT_RATIONAL, val, maxlen);
1016 CC (e, 1, val, maxlen);
1017 v_rat = exif_get_rational (e->data, o);
1018 if (!v_rat.denominator || (0x80000000 == v_rat.numerator)) {
1019 exif_entry_format_value(e, val, maxlen);
1022 d = (double) v_rat.numerator / (double) v_rat.denominator;
1023 snprintf (val, maxlen, _("%.02f EV"), d);
1024 snprintf (b, sizeof (b), _(" (f/%.01f)"), pow (2, d / 2.));
1025 strncat (val, b, maxlen-1 - strlen (val));
1027 case EXIF_TAG_FOCAL_LENGTH:
1028 CF (e, EXIF_FORMAT_RATIONAL, val, maxlen);
1029 CC (e, 1, val, maxlen);
1030 v_rat = exif_get_rational (e->data, o);
1031 if (!v_rat.denominator) {
1032 exif_entry_format_value(e, val, maxlen);
1037 * For calculation of the 35mm equivalent,
1038 * Minolta cameras need a multiplier that depends on the
1042 entry = exif_content_get_entry (
1043 e->parent->parent->ifd[EXIF_IFD_0], EXIF_TAG_MAKE);
1044 if (entry && entry->data &&
1045 !strncmp ((char *)entry->data, "Minolta", 7)) {
1046 entry = exif_content_get_entry (
1047 e->parent->parent->ifd[EXIF_IFD_0],
1049 if (entry && entry->data) {
1050 if (!strncmp ((char *)entry->data, "DiMAGE 7", 8))
1052 else if (!strncmp ((char *)entry->data, "DiMAGE 5", 8))
1057 snprintf (b, sizeof (b), _(" (35 equivalent: %d mm)"),
1058 (int) (d * (double) v_rat.numerator /
1059 (double) v_rat.denominator));
1063 d = (double) v_rat.numerator / (double) v_rat.denominator;
1064 snprintf (val, maxlen, "%.1f mm", d);
1065 strncat (val, b, maxlen-1 - strlen (val));
1067 case EXIF_TAG_SUBJECT_DISTANCE:
1068 CF (e, EXIF_FORMAT_RATIONAL, val, maxlen);
1069 CC (e, 1, val, maxlen);
1070 v_rat = exif_get_rational (e->data, o);
1071 if (!v_rat.denominator) {
1072 exif_entry_format_value(e, val, maxlen);
1075 d = (double) v_rat.numerator / (double) v_rat.denominator;
1076 snprintf (val, maxlen, "%.1f m", d);
1078 case EXIF_TAG_EXPOSURE_TIME:
1079 CF (e, EXIF_FORMAT_RATIONAL, val, maxlen);
1080 CC (e, 1, val, maxlen);
1081 v_rat = exif_get_rational (e->data, o);
1082 if (!v_rat.denominator) {
1083 exif_entry_format_value(e, val, maxlen);
1086 d = (double) v_rat.numerator / (double) v_rat.denominator;
1088 snprintf (val, maxlen, _("1/%i"), (int) (0.5 + 1. / d));
1090 snprintf (val, maxlen, "%i", (int) d);
1091 strncat (val, _(" sec."), maxlen-1 - strlen (val));
1093 case EXIF_TAG_SHUTTER_SPEED_VALUE:
1094 CF (e, EXIF_FORMAT_SRATIONAL, val, maxlen);
1095 CC (e, 1, val, maxlen);
1096 v_srat = exif_get_srational (e->data, o);
1097 if (!v_srat.denominator) {
1098 exif_entry_format_value(e, val, maxlen);
1101 d = (double) v_srat.numerator / (double) v_srat.denominator;
1102 snprintf (val, maxlen, _("%.02f EV"), d);
1103 d = 1. / pow (2, d);
1105 snprintf (b, sizeof (b), _(" (1/%d sec.)"), (int) (1. / d));
1107 snprintf (b, sizeof (b), _(" (%d sec.)"), (int) d);
1108 strncat (val, b, maxlen-1 - strlen (val));
1110 case EXIF_TAG_BRIGHTNESS_VALUE:
1111 CF (e, EXIF_FORMAT_SRATIONAL, val, maxlen);
1112 CC (e, 1, val, maxlen);
1113 v_srat = exif_get_srational (e->data, o);
1114 if (!v_srat.denominator) {
1115 exif_entry_format_value(e, val, maxlen);
1118 d = (double) v_srat.numerator / (double) v_srat.denominator;
1119 snprintf (val, maxlen, _("%.02f EV"), d);
1120 snprintf (b, sizeof (b), _(" (%.02f cd/m^2)"),
1121 1. / (M_PI * 0.3048 * 0.3048) * pow (2, d));
1122 strncat (val, b, maxlen-1 - strlen (val));
1124 case EXIF_TAG_FILE_SOURCE:
1125 CF (e, EXIF_FORMAT_UNDEFINED, val, maxlen);
1126 CC (e, 1, val, maxlen);
1127 v_byte = e->data[0];
1129 strncpy (val, _("DSC"), maxlen-1);
1131 snprintf (val, maxlen, _("Internal error (unknown "
1132 "value %i)"), v_byte);
1134 case EXIF_TAG_COMPONENTS_CONFIGURATION:
1135 CF (e, EXIF_FORMAT_UNDEFINED, val, maxlen);
1136 CC (e, 4, val, maxlen);
1137 for (i = 0; i < 4; i++) {
1138 switch (e->data[i]) {
1139 case 0: c = _("-"); break;
1140 case 1: c = _("Y"); break;
1141 case 2: c = _("Cb"); break;
1142 case 3: c = _("Cr"); break;
1143 case 4: c = _("R"); break;
1144 case 5: c = _("G"); break;
1145 case 6: c = _("B"); break;
1146 default: c = _("Reserved"); break;
1148 strncat (val, c, maxlen-1 - strlen (val));
1150 strncat (val, " ", maxlen-1 - strlen (val));
1153 case EXIF_TAG_EXPOSURE_BIAS_VALUE:
1154 CF (e, EXIF_FORMAT_SRATIONAL, val, maxlen);
1155 CC (e, 1, val, maxlen);
1156 v_srat = exif_get_srational (e->data, o);
1157 if (!v_srat.denominator) {
1158 exif_entry_format_value(e, val, maxlen);
1161 d = (double) v_srat.numerator / (double) v_srat.denominator;
1162 snprintf (val, maxlen, _("%.02f EV"), d);
1164 case EXIF_TAG_SCENE_TYPE:
1165 CF (e, EXIF_FORMAT_UNDEFINED, val, maxlen);
1166 CC (e, 1, val, maxlen);
1167 v_byte = e->data[0];
1169 strncpy (val, _("Directly photographed"), maxlen-1);
1171 snprintf (val, maxlen, _("Internal error (unknown "
1172 "value %i)"), v_byte);
1174 case EXIF_TAG_YCBCR_SUB_SAMPLING:
1175 CF (e, EXIF_FORMAT_SHORT, val, maxlen);
1176 CC (e, 2, val, maxlen);
1177 v_short = exif_get_short (e->data, o);
1178 v_short2 = exif_get_short (
1179 e->data + exif_format_get_size (e->format),
1181 if ((v_short == 2) && (v_short2 == 1))
1182 strncpy (val, _("YCbCr4:2:2"), maxlen-1);
1183 else if ((v_short == 2) && (v_short2 == 2))
1184 strncpy (val, _("YCbCr4:2:0"), maxlen-1);
1186 snprintf (val, maxlen, "%u, %u", v_short, v_short2);
1188 case EXIF_TAG_SUBJECT_AREA:
1189 CF (e, EXIF_FORMAT_SHORT, val, maxlen);
1190 switch (e->components) {
1192 v_short = exif_get_short (e->data, o);
1193 v_short2 = exif_get_short (e->data + 2, o);
1194 snprintf (val, maxlen, "(x,y) = (%i,%i)",
1198 v_short = exif_get_short (e->data, o);
1199 v_short2 = exif_get_short (e->data + 2, o);
1200 v_short3 = exif_get_short (e->data + 4, o);
1201 snprintf (val, maxlen, _("Within distance %i of "
1202 "(x,y) = (%i,%i)"), v_short3, v_short,
1206 v_short = exif_get_short (e->data, o);
1207 v_short2 = exif_get_short (e->data + 2, o);
1208 v_short3 = exif_get_short (e->data + 4, o);
1209 v_short4 = exif_get_short (e->data + 6, o);
1210 snprintf (val, maxlen, _("Within rectangle "
1211 "(width %i, height %i) around "
1212 "(x,y) = (%i,%i)"), v_short3, v_short4,
1216 snprintf (val, maxlen, _("Unexpected number "
1217 "of components (%li, expected 2, 3, or 4)."),
1221 case EXIF_TAG_GPS_VERSION_ID:
1222 /* This is only valid in the GPS IFD */
1223 CF (e, EXIF_FORMAT_BYTE, val, maxlen);
1224 CC (e, 4, val, maxlen);
1225 v_byte = e->data[0];
1226 snprintf (val, maxlen, "%u", v_byte);
1227 for (i = 1; i < e->components; i++) {
1228 v_byte = e->data[i];
1229 snprintf (b, sizeof (b), ".%u", v_byte);
1230 strncat (val, b, maxlen-1 - strlen (val));
1233 case EXIF_TAG_INTEROPERABILITY_VERSION:
1234 /* a.k.a. case EXIF_TAG_GPS_LATITUDE: */
1235 /* This tag occurs in EXIF_IFD_INTEROPERABILITY */
1236 if (e->format == EXIF_FORMAT_UNDEFINED) {
1237 strncpy (val, (char *) e->data, MIN (maxlen-1, e->size));
1240 /* EXIF_TAG_GPS_LATITUDE is the same numerically as
1241 * EXIF_TAG_INTEROPERABILITY_VERSION but in EXIF_IFD_GPS
1243 exif_entry_format_value(e, val, maxlen);
1245 case EXIF_TAG_GPS_ALTITUDE_REF:
1246 /* This is only valid in the GPS IFD */
1247 CF (e, EXIF_FORMAT_BYTE, val, maxlen);
1248 CC (e, 1, val, maxlen);
1249 v_byte = e->data[0];
1251 strncpy (val, _("Sea level"), maxlen-1);
1252 else if (v_byte == 1)
1253 strncpy (val, _("Sea level reference"), maxlen-1);
1255 snprintf (val, maxlen, _("Internal error (unknown "
1256 "value %i)"), v_byte);
1258 case EXIF_TAG_GPS_TIME_STAMP:
1259 /* This is only valid in the GPS IFD */
1260 CF (e, EXIF_FORMAT_RATIONAL, val, maxlen);
1261 CC (e, 3, val, maxlen);
1263 v_rat = exif_get_rational (e->data, o);
1264 if (!v_rat.denominator) {
1265 exif_entry_format_value(e, val, maxlen);
1268 i = v_rat.numerator / v_rat.denominator;
1270 v_rat = exif_get_rational (e->data +
1271 exif_format_get_size (e->format),
1273 if (!v_rat.denominator) {
1274 exif_entry_format_value(e, val, maxlen);
1277 j = v_rat.numerator / v_rat.denominator;
1279 v_rat = exif_get_rational (e->data +
1280 2*exif_format_get_size (e->format),
1282 if (!v_rat.denominator) {
1283 exif_entry_format_value(e, val, maxlen);
1286 d = (double) v_rat.numerator / (double) v_rat.denominator;
1287 snprintf (val, maxlen, "%02u:%02u:%05.2f", i, j, d);
1290 case EXIF_TAG_METERING_MODE:
1291 case EXIF_TAG_COMPRESSION:
1292 case EXIF_TAG_LIGHT_SOURCE:
1293 case EXIF_TAG_FOCAL_PLANE_RESOLUTION_UNIT:
1294 case EXIF_TAG_RESOLUTION_UNIT:
1295 case EXIF_TAG_EXPOSURE_PROGRAM:
1296 case EXIF_TAG_FLASH:
1297 case EXIF_TAG_SUBJECT_DISTANCE_RANGE:
1298 case EXIF_TAG_COLOR_SPACE:
1299 CF (e,EXIF_FORMAT_SHORT, val, maxlen);
1300 CC (e, 1, val, maxlen);
1301 v_short = exif_get_short (e->data, o);
1303 /* Search the tag */
1304 for (i = 0; list2[i].tag && (list2[i].tag != e->tag); i++);
1305 if (!list2[i].tag) {
1306 snprintf (val, maxlen, _("Internal error (unknown "
1307 "value %i)"), v_short);
1311 /* Find the value */
1312 for (j = 0; list2[i].elem[j].values[0] &&
1313 (list2[i].elem[j].index < v_short); j++);
1314 if (list2[i].elem[j].index != v_short) {
1315 snprintf (val, maxlen, _("Internal error (unknown "
1316 "value %i)"), v_short);
1320 /* Find a short enough value */
1321 memset (val, 0, maxlen);
1322 for (k = 0; list2[i].elem[j].values[k]; k++) {
1323 size_t l = strlen (_(list2[i].elem[j].values[k]));
1324 if ((maxlen > l) && (strlen (val) < l))
1325 strncpy (val, _(list2[i].elem[j].values[k]), maxlen-1);
1327 if (!val[0]) snprintf (val, maxlen, "%i", v_short);
1331 case EXIF_TAG_PLANAR_CONFIGURATION:
1332 case EXIF_TAG_SENSING_METHOD:
1333 case EXIF_TAG_ORIENTATION:
1334 case EXIF_TAG_YCBCR_POSITIONING:
1335 case EXIF_TAG_PHOTOMETRIC_INTERPRETATION:
1336 case EXIF_TAG_CUSTOM_RENDERED:
1337 case EXIF_TAG_EXPOSURE_MODE:
1338 case EXIF_TAG_WHITE_BALANCE:
1339 case EXIF_TAG_SCENE_CAPTURE_TYPE:
1340 case EXIF_TAG_GAIN_CONTROL:
1341 case EXIF_TAG_SATURATION:
1342 case EXIF_TAG_CONTRAST:
1343 case EXIF_TAG_SHARPNESS:
1344 CF (e, EXIF_FORMAT_SHORT, val, maxlen);
1345 CC (e, 1, val, maxlen);
1346 v_short = exif_get_short (e->data, o);
1348 /* Search the tag */
1349 for (i = 0; list[i].tag && (list[i].tag != e->tag); i++);
1351 snprintf (val, maxlen, _("Internal error (unknown "
1352 "value %i)"), v_short);
1356 /* Find the value */
1357 for (j = 0; list[i].strings[j] && (j < v_short); j++);
1358 if (!list[i].strings[j])
1359 snprintf (val, maxlen, "%i", v_short);
1360 else if (!*list[i].strings[j])
1361 snprintf (val, maxlen, _("Unknown value %i"), v_short);
1363 strncpy (val, _(list[i].strings[j]), maxlen-1);
1366 case EXIF_TAG_XP_TITLE:
1367 case EXIF_TAG_XP_COMMENT:
1368 case EXIF_TAG_XP_AUTHOR:
1369 case EXIF_TAG_XP_KEYWORDS:
1370 case EXIF_TAG_XP_SUBJECT:
1372 unsigned short *utf16;
1374 /* Sanity check the size to prevent overflow */
1375 if (e->size+sizeof(unsigned short) < e->size) break;
1377 /* The tag may not be U+0000-terminated , so make a local
1378 U+0000-terminated copy before converting it */
1379 utf16 = exif_mem_alloc (e->priv->mem, e->size+sizeof(unsigned short));
1381 memcpy(utf16, e->data, e->size);
1382 utf16[e->size/sizeof(unsigned short)] = 0;
1384 /* Warning! The texts are converted from UTF16 to UTF8 */
1385 /* FIXME: use iconv to convert into the locale encoding */
1386 exif_convert_utf16_to_utf8(val, utf16, maxlen);
1387 exif_mem_free(e->priv->mem, utf16);
1392 /* Use a generic value formatting */
1393 exif_entry_format_value(e, val, maxlen);
1401 * \bug Log and report failed exif_mem_malloc() calls.
1404 exif_entry_initialize (ExifEntry *e, ExifTag tag)
1409 /* We need the byte order */
1410 if (!e || !e->parent || e->data || !e->parent->parent)
1412 o = exif_data_get_byte_order (e->parent->parent);
1417 /* LONG, 1 component, no default */
1418 case EXIF_TAG_PIXEL_X_DIMENSION:
1419 case EXIF_TAG_PIXEL_Y_DIMENSION:
1420 case EXIF_TAG_EXIF_IFD_POINTER:
1421 case EXIF_TAG_GPS_INFO_IFD_POINTER:
1422 case EXIF_TAG_INTEROPERABILITY_IFD_POINTER:
1423 case EXIF_TAG_JPEG_INTERCHANGE_FORMAT_LENGTH:
1424 case EXIF_TAG_JPEG_INTERCHANGE_FORMAT:
1426 e->format = EXIF_FORMAT_LONG;
1427 e->size = exif_format_get_size (e->format) * e->components;
1428 e->data = exif_entry_alloc (e, e->size);
1429 if (!e->data) break;
1432 /* SHORT, 1 component, no default */
1433 case EXIF_TAG_SUBJECT_LOCATION:
1434 case EXIF_TAG_SENSING_METHOD:
1435 case EXIF_TAG_PHOTOMETRIC_INTERPRETATION:
1436 case EXIF_TAG_COMPRESSION:
1437 case EXIF_TAG_EXPOSURE_MODE:
1438 case EXIF_TAG_WHITE_BALANCE:
1439 case EXIF_TAG_FOCAL_LENGTH_IN_35MM_FILM:
1440 case EXIF_TAG_GAIN_CONTROL:
1441 case EXIF_TAG_SUBJECT_DISTANCE_RANGE:
1442 case EXIF_TAG_FLASH:
1443 case EXIF_TAG_ISO_SPEED_RATINGS:
1445 /* SHORT, 1 component, default 0 */
1446 case EXIF_TAG_IMAGE_WIDTH:
1447 case EXIF_TAG_IMAGE_LENGTH:
1448 case EXIF_TAG_EXPOSURE_PROGRAM:
1449 case EXIF_TAG_LIGHT_SOURCE:
1450 case EXIF_TAG_METERING_MODE:
1451 case EXIF_TAG_CUSTOM_RENDERED:
1452 case EXIF_TAG_SCENE_CAPTURE_TYPE:
1453 case EXIF_TAG_CONTRAST:
1454 case EXIF_TAG_SATURATION:
1455 case EXIF_TAG_SHARPNESS:
1457 e->format = EXIF_FORMAT_SHORT;
1458 e->size = exif_format_get_size (e->format) * e->components;
1459 e->data = exif_entry_alloc (e, e->size);
1460 if (!e->data) break;
1461 exif_set_short (e->data, o, 0);
1464 /* SHORT, 1 component, default 1 */
1465 case EXIF_TAG_ORIENTATION:
1466 case EXIF_TAG_PLANAR_CONFIGURATION:
1467 case EXIF_TAG_YCBCR_POSITIONING:
1469 e->format = EXIF_FORMAT_SHORT;
1470 e->size = exif_format_get_size (e->format) * e->components;
1471 e->data = exif_entry_alloc (e, e->size);
1472 if (!e->data) break;
1473 exif_set_short (e->data, o, 1);
1476 /* SHORT, 1 component, default 2 */
1477 case EXIF_TAG_RESOLUTION_UNIT:
1478 case EXIF_TAG_FOCAL_PLANE_RESOLUTION_UNIT:
1480 e->format = EXIF_FORMAT_SHORT;
1481 e->size = exif_format_get_size (e->format) * e->components;
1482 e->data = exif_entry_alloc (e, e->size);
1483 if (!e->data) break;
1484 exif_set_short (e->data, o, 2);
1487 /* SHORT, 1 component, default 3 */
1488 case EXIF_TAG_SAMPLES_PER_PIXEL:
1490 e->format = EXIF_FORMAT_SHORT;
1491 e->size = exif_format_get_size (e->format) * e->components;
1492 e->data = exif_entry_alloc (e, e->size);
1493 if (!e->data) break;
1494 exif_set_short (e->data, o, 3);
1497 /* SHORT, 1 component, default 0xffff */
1498 case EXIF_TAG_COLOR_SPACE:
1500 e->format = EXIF_FORMAT_SHORT;
1501 e->size = exif_format_get_size (e->format) * e->components;
1502 e->data = exif_entry_alloc (e, e->size);
1503 if (!e->data) break;
1504 exif_set_short (e->data, o, 0xffff);
1507 /* SHORT, 3 components, default 8 8 8 */
1508 case EXIF_TAG_BITS_PER_SAMPLE:
1510 e->format = EXIF_FORMAT_SHORT;
1511 e->size = exif_format_get_size (e->format) * e->components;
1512 e->data = exif_entry_alloc (e, e->size);
1513 if (!e->data) break;
1514 exif_set_short (e->data, o, 8);
1516 e->data + exif_format_get_size (e->format),
1519 e->data + 2 * exif_format_get_size (e->format),
1523 /* SHORT, 2 components, default 2 1 */
1524 case EXIF_TAG_YCBCR_SUB_SAMPLING:
1526 e->format = EXIF_FORMAT_SHORT;
1527 e->size = exif_format_get_size (e->format) * e->components;
1528 e->data = exif_entry_alloc (e, e->size);
1529 if (!e->data) break;
1530 exif_set_short (e->data, o, 2);
1532 e->data + exif_format_get_size (e->format),
1536 /* SRATIONAL, 1 component, no default */
1537 case EXIF_TAG_EXPOSURE_BIAS_VALUE:
1538 case EXIF_TAG_BRIGHTNESS_VALUE:
1539 case EXIF_TAG_SHUTTER_SPEED_VALUE:
1541 e->format = EXIF_FORMAT_SRATIONAL;
1542 e->size = exif_format_get_size (e->format) * e->components;
1543 e->data = exif_entry_alloc (e, e->size);
1544 if (!e->data) break;
1547 /* RATIONAL, 1 component, no default */
1548 case EXIF_TAG_EXPOSURE_TIME:
1549 case EXIF_TAG_FOCAL_PLANE_X_RESOLUTION:
1550 case EXIF_TAG_FOCAL_PLANE_Y_RESOLUTION:
1551 case EXIF_TAG_EXPOSURE_INDEX:
1552 case EXIF_TAG_FLASH_ENERGY:
1553 case EXIF_TAG_FNUMBER:
1554 case EXIF_TAG_FOCAL_LENGTH:
1555 case EXIF_TAG_SUBJECT_DISTANCE:
1556 case EXIF_TAG_MAX_APERTURE_VALUE:
1557 case EXIF_TAG_APERTURE_VALUE:
1558 case EXIF_TAG_COMPRESSED_BITS_PER_PIXEL:
1559 case EXIF_TAG_PRIMARY_CHROMATICITIES:
1560 case EXIF_TAG_DIGITAL_ZOOM_RATIO:
1562 e->format = EXIF_FORMAT_RATIONAL;
1563 e->size = exif_format_get_size (e->format) * e->components;
1564 e->data = exif_entry_alloc (e, e->size);
1565 if (!e->data) break;
1568 /* RATIONAL, 1 component, default 72/1 */
1569 case EXIF_TAG_X_RESOLUTION:
1570 case EXIF_TAG_Y_RESOLUTION:
1572 e->format = EXIF_FORMAT_RATIONAL;
1573 e->size = exif_format_get_size (e->format) * e->components;
1574 e->data = exif_entry_alloc (e, e->size);
1575 if (!e->data) break;
1578 exif_set_rational (e->data, o, r);
1581 /* RATIONAL, 2 components, no default */
1582 case EXIF_TAG_WHITE_POINT:
1584 e->format = EXIF_FORMAT_RATIONAL;
1585 e->size = exif_format_get_size (e->format) * e->components;
1586 e->data = exif_entry_alloc (e, e->size);
1587 if (!e->data) break;
1590 /* RATIONAL, 6 components */
1591 case EXIF_TAG_REFERENCE_BLACK_WHITE:
1593 e->format = EXIF_FORMAT_RATIONAL;
1594 e->size = exif_format_get_size (e->format) * e->components;
1595 e->data = exif_entry_alloc (e, e->size);
1596 if (!e->data) break;
1599 exif_set_rational (e->data, o, r);
1602 e->data + exif_format_get_size (e->format), o, r);
1605 e->data + 2 * exif_format_get_size (e->format), o, r);
1608 e->data + 3 * exif_format_get_size (e->format), o, r);
1611 e->data + 4 * exif_format_get_size (e->format), o, r);
1614 e->data + 5 * exif_format_get_size (e->format), o, r);
1617 /* ASCII, 20 components */
1618 case EXIF_TAG_DATE_TIME:
1619 case EXIF_TAG_DATE_TIME_ORIGINAL:
1620 case EXIF_TAG_DATE_TIME_DIGITIZED:
1623 #ifdef HAVE_LOCALTIME_R
1629 #ifdef HAVE_LOCALTIME_R
1630 tm = localtime_r (&t, &tms);
1632 tm = localtime (&t);
1635 e->format = EXIF_FORMAT_ASCII;
1636 e->size = exif_format_get_size (e->format) * e->components;
1637 e->data = exif_entry_alloc (e, e->size);
1638 if (!e->data) break;
1639 snprintf ((char *) e->data, e->size,
1640 "%04i:%02i:%02i %02i:%02i:%02i",
1641 tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
1642 tm->tm_hour, tm->tm_min, tm->tm_sec);
1646 /* ASCII, no default */
1647 case EXIF_TAG_SUB_SEC_TIME:
1648 case EXIF_TAG_SUB_SEC_TIME_ORIGINAL:
1649 case EXIF_TAG_SUB_SEC_TIME_DIGITIZED:
1651 e->format = EXIF_FORMAT_ASCII;
1656 /* ASCII, default "[None]" */
1657 case EXIF_TAG_IMAGE_DESCRIPTION:
1659 case EXIF_TAG_MODEL:
1660 case EXIF_TAG_SOFTWARE:
1661 case EXIF_TAG_ARTIST:
1662 e->components = strlen (_("[None]")) + 1;
1663 e->format = EXIF_FORMAT_ASCII;
1664 e->size = exif_format_get_size (e->format) * e->components;
1665 e->data = exif_entry_alloc (e, e->size);
1666 if (!e->data) break;
1667 strncpy ((char *)e->data, _("[None]"), e->size);
1669 /* ASCII, default "[None]\0[None]\0" */
1670 case EXIF_TAG_COPYRIGHT:
1671 e->components = (strlen (_("[None]")) + 1) * 2;
1672 e->format = EXIF_FORMAT_ASCII;
1673 e->size = exif_format_get_size (e->format) * e->components;
1674 e->data = exif_entry_alloc (e, e->size);
1675 if (!e->data) break;
1676 strcpy (((char *)e->data) + 0, _("[None]"));
1677 strcpy (((char *)e->data) + strlen (_("[None]")) + 1, _("[None]"));
1680 /* UNDEFINED, 1 component, default 1 */
1681 case EXIF_TAG_SCENE_TYPE:
1683 e->format = EXIF_FORMAT_UNDEFINED;
1684 e->size = exif_format_get_size (e->format) * e->components;
1685 e->data = exif_entry_alloc (e, e->size);
1686 if (!e->data) break;
1690 /* UNDEFINED, 1 component, default 3 */
1691 case EXIF_TAG_FILE_SOURCE:
1693 e->format = EXIF_FORMAT_UNDEFINED;
1694 e->size = exif_format_get_size (e->format) * e->components;
1695 e->data = exif_entry_alloc (e, e->size);
1696 if (!e->data) break;
1700 /* UNDEFINED, 4 components, default 48 49 48 48 */
1701 case EXIF_TAG_FLASH_PIX_VERSION:
1703 e->format = EXIF_FORMAT_UNDEFINED;
1704 e->size = exif_format_get_size (e->format) * e->components;
1705 e->data = exif_entry_alloc (e, e->size);
1706 if (!e->data) break;
1707 memcpy (e->data, "0100", 4);
1710 /* UNDEFINED, 4 components, default 48 50 49 48 */
1711 case EXIF_TAG_EXIF_VERSION:
1713 e->format = EXIF_FORMAT_UNDEFINED;
1714 e->size = exif_format_get_size (e->format) * e->components;
1715 e->data = exif_entry_alloc (e, e->size);
1716 if (!e->data) break;
1717 memcpy (e->data, "0210", 4);
1720 /* UNDEFINED, 4 components, default 1 2 3 0 */
1721 case EXIF_TAG_COMPONENTS_CONFIGURATION:
1723 e->format = EXIF_FORMAT_UNDEFINED;
1724 e->size = exif_format_get_size (e->format) * e->components;
1725 e->data = exif_entry_alloc (e, e->size);
1726 if (!e->data) break;
1733 /* UNDEFINED, no components, no default */
1734 /* Use this if the tag is otherwise unsupported */
1735 case EXIF_TAG_MAKER_NOTE:
1736 case EXIF_TAG_USER_COMMENT:
1739 e->format = EXIF_FORMAT_UNDEFINED;