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 bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
857 if (!e || !e->parent || !e->parent->parent || !maxlen)
860 /* make sure the returned string is zero terminated */
861 /* FIXME: this is inefficient in the case of long buffers and should
862 * instead be taken care of on each write instead. */
863 memset (val, 0, maxlen);
865 /* We need the byte order */
866 o = exif_data_get_byte_order (e->parent->parent);
869 if (e->size != e->components * exif_format_get_size (e->format)) {
870 snprintf (val, maxlen, _("Invalid size of entry (%i, "
871 "expected %li x %i)."), e->size, e->components,
872 exif_format_get_size (e->format));
877 case EXIF_TAG_USER_COMMENT:
880 * The specification says UNDEFINED, but some
881 * manufacturers don't care and use ASCII. If this is the
882 * case here, only refuse to read it if there is no chance
883 * of finding readable data.
885 if ((e->format != EXIF_FORMAT_ASCII) ||
887 ( memcmp (e->data, "ASCII\0\0\0" , 8) &&
888 memcmp (e->data, "UNICODE\0" , 8) &&
889 memcmp (e->data, "JIS\0\0\0\0\0", 8) &&
890 memcmp (e->data, "\0\0\0\0\0\0\0\0", 8)))
891 CF (e, EXIF_FORMAT_UNDEFINED, val, maxlen);
894 * Note that, according to the specification (V2.1, p 40),
895 * the user comment field does not have to be
898 if ((e->size >= 8) && !memcmp (e->data, "ASCII\0\0\0", 8)) {
899 strncpy (val, (char *) e->data + 8, MIN (e->size - 8, maxlen-1));
902 if ((e->size >= 8) && !memcmp (e->data, "UNICODE\0", 8)) {
903 strncpy (val, _("Unsupported UNICODE string"), maxlen-1);
904 /* FIXME: use iconv to convert into the locale encoding.
905 * EXIF 2.2 implies (but does not say) that this encoding is
910 if ((e->size >= 8) && !memcmp (e->data, "JIS\0\0\0\0\0", 8)) {
911 strncpy (val, _("Unsupported JIS string"), maxlen-1);
912 /* FIXME: use iconv to convert into the locale encoding */
916 /* Check if there is really some information in the tag. */
917 for (i = 0; (i < e->size) &&
918 (!e->data[i] || (e->data[i] == ' ')); i++);
919 if (i == e->size) break;
922 * If we reach this point, the tag does not
923 * comply with the standard but seems to contain data.
924 * Print as much as possible.
926 exif_entry_log (e, EXIF_LOG_CODE_DEBUG,
927 _("Tag UserComment contains data but is "
928 "against specification."));
929 for (j = 0; (i < e->size) && (j < maxlen); i++, j++) {
930 exif_entry_log (e, EXIF_LOG_CODE_DEBUG,
931 _("Byte at position %i: 0x%02x"), i, e->data[i]);
932 val[j] = isprint (e->data[i]) ? e->data[i] : '.';
936 case EXIF_TAG_EXIF_VERSION:
937 CF (e, EXIF_FORMAT_UNDEFINED, val, maxlen);
938 CC (e, 4, val, maxlen);
939 strncpy (val, _("Unknown Exif Version"), maxlen-1);
940 for (i = 0; *versions[i].label; i++) {
941 if (!memcmp (e->data, versions[i].label, 4)) {
942 snprintf (val, maxlen,
943 _("Exif Version %d.%d"),
950 case EXIF_TAG_FLASH_PIX_VERSION:
951 CF (e, EXIF_FORMAT_UNDEFINED, val, maxlen);
952 CC (e, 4, val, maxlen);
953 if (!memcmp (e->data, "0100", 4))
954 strncpy (val, _("FlashPix Version 1.0"), maxlen-1);
955 else if (!memcmp (e->data, "0101", 4))
956 strncpy (val, _("FlashPix Version 1.01"), maxlen-1);
958 strncpy (val, _("Unknown FlashPix Version"), maxlen-1);
960 case EXIF_TAG_COPYRIGHT:
961 CF (e, EXIF_FORMAT_ASCII, val, maxlen);
964 * First part: Photographer.
965 * Some cameras store a string like " " here. Ignore it.
966 * Remember that a corrupted tag might not be NUL-terminated
968 if (e->size && e->data && match_repeated_char(e->data, ' ', e->size))
969 strncpy (val, (char *) e->data, MIN (maxlen-1, e->size));
971 strncpy (val, _("[None]"), maxlen-1);
972 strncat (val, " ", maxlen-1 - strlen (val));
973 strncat (val, _("(Photographer)"), maxlen-1 - strlen (val));
975 /* Second part: Editor. */
976 strncat (val, " - ", maxlen-1 - strlen (val));
978 if (e->size && e->data) {
979 const unsigned char *tagdata = memchr(e->data, 0, e->size);
981 unsigned int editor_ofs = tagdata - e->data;
982 unsigned int remaining = e->size - editor_ofs;
983 if (match_repeated_char(tagdata, ' ', remaining)) {
984 strncat (val, (const char*)tagdata, MIN (maxlen-1 - strlen (val), remaining));
990 strncat (val, _("[None]"), maxlen-1 - strlen (val));
991 strncat (val, " ", maxlen-1 - strlen (val));
992 strncat (val, _("(Editor)"), maxlen-1 - strlen (val));
995 case EXIF_TAG_FNUMBER:
996 CF (e, EXIF_FORMAT_RATIONAL, val, maxlen);
997 CC (e, 1, val, maxlen);
998 v_rat = exif_get_rational (e->data, o);
999 if (!v_rat.denominator) {
1000 exif_entry_format_value(e, val, maxlen);
1003 d = (double) v_rat.numerator / (double) v_rat.denominator;
1004 snprintf (val, maxlen, "f/%.01f", d);
1006 case EXIF_TAG_APERTURE_VALUE:
1007 case EXIF_TAG_MAX_APERTURE_VALUE:
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 || (0x80000000 == v_rat.numerator)) {
1012 exif_entry_format_value(e, val, maxlen);
1015 d = (double) v_rat.numerator / (double) v_rat.denominator;
1016 snprintf (val, maxlen, _("%.02f EV"), d);
1017 snprintf (b, sizeof (b), _(" (f/%.01f)"), pow (2, d / 2.));
1018 strncat (val, b, maxlen-1 - strlen (val));
1020 case EXIF_TAG_FOCAL_LENGTH:
1021 CF (e, EXIF_FORMAT_RATIONAL, val, maxlen);
1022 CC (e, 1, val, maxlen);
1023 v_rat = exif_get_rational (e->data, o);
1024 if (!v_rat.denominator) {
1025 exif_entry_format_value(e, val, maxlen);
1030 * For calculation of the 35mm equivalent,
1031 * Minolta cameras need a multiplier that depends on the
1035 entry = exif_content_get_entry (
1036 e->parent->parent->ifd[EXIF_IFD_0], EXIF_TAG_MAKE);
1037 if (entry && entry->data &&
1038 !strncmp ((char *)entry->data, "Minolta", 7)) {
1039 entry = exif_content_get_entry (
1040 e->parent->parent->ifd[EXIF_IFD_0],
1042 if (entry && entry->data) {
1043 if (!strncmp ((char *)entry->data, "DiMAGE 7", 8))
1045 else if (!strncmp ((char *)entry->data, "DiMAGE 5", 8))
1050 snprintf (b, sizeof (b), _(" (35 equivalent: %d mm)"),
1051 (int) (d * (double) v_rat.numerator /
1052 (double) v_rat.denominator));
1056 d = (double) v_rat.numerator / (double) v_rat.denominator;
1057 snprintf (val, maxlen, "%.1f mm", d);
1058 strncat (val, b, maxlen-1 - strlen (val));
1060 case EXIF_TAG_SUBJECT_DISTANCE:
1061 CF (e, EXIF_FORMAT_RATIONAL, val, maxlen);
1062 CC (e, 1, val, maxlen);
1063 v_rat = exif_get_rational (e->data, o);
1064 if (!v_rat.denominator) {
1065 exif_entry_format_value(e, val, maxlen);
1068 d = (double) v_rat.numerator / (double) v_rat.denominator;
1069 snprintf (val, maxlen, "%.1f m", d);
1071 case EXIF_TAG_EXPOSURE_TIME:
1072 CF (e, EXIF_FORMAT_RATIONAL, val, maxlen);
1073 CC (e, 1, val, maxlen);
1074 v_rat = exif_get_rational (e->data, o);
1075 if (!v_rat.denominator) {
1076 exif_entry_format_value(e, val, maxlen);
1079 d = (double) v_rat.numerator / (double) v_rat.denominator;
1081 snprintf (val, maxlen, _("1/%i"), (int) (0.5 + 1. / d));
1083 snprintf (val, maxlen, "%i", (int) d);
1084 strncat (val, _(" sec."), maxlen-1 - strlen (val));
1086 case EXIF_TAG_SHUTTER_SPEED_VALUE:
1087 CF (e, EXIF_FORMAT_SRATIONAL, val, maxlen);
1088 CC (e, 1, val, maxlen);
1089 v_srat = exif_get_srational (e->data, o);
1090 if (!v_srat.denominator) {
1091 exif_entry_format_value(e, val, maxlen);
1094 d = (double) v_srat.numerator / (double) v_srat.denominator;
1095 snprintf (val, maxlen, _("%.02f EV"), d);
1096 d = 1. / pow (2, d);
1098 snprintf (b, sizeof (b), _(" (1/%d sec.)"), (int) (1. / d));
1100 snprintf (b, sizeof (b), _(" (%d sec.)"), (int) d);
1101 strncat (val, b, maxlen-1 - strlen (val));
1103 case EXIF_TAG_BRIGHTNESS_VALUE:
1104 CF (e, EXIF_FORMAT_SRATIONAL, val, maxlen);
1105 CC (e, 1, val, maxlen);
1106 v_srat = exif_get_srational (e->data, o);
1107 if (!v_srat.denominator) {
1108 exif_entry_format_value(e, val, maxlen);
1111 d = (double) v_srat.numerator / (double) v_srat.denominator;
1112 snprintf (val, maxlen, _("%.02f EV"), d);
1113 snprintf (b, sizeof (b), _(" (%.02f cd/m^2)"),
1114 1. / (M_PI * 0.3048 * 0.3048) * pow (2, d));
1115 strncat (val, b, maxlen-1 - strlen (val));
1117 case EXIF_TAG_FILE_SOURCE:
1118 CF (e, EXIF_FORMAT_UNDEFINED, val, maxlen);
1119 CC (e, 1, val, maxlen);
1120 v_byte = e->data[0];
1122 strncpy (val, _("DSC"), maxlen-1);
1124 snprintf (val, maxlen, _("Internal error (unknown "
1125 "value %i)"), v_byte);
1127 case EXIF_TAG_COMPONENTS_CONFIGURATION:
1128 CF (e, EXIF_FORMAT_UNDEFINED, val, maxlen);
1129 CC (e, 4, val, maxlen);
1130 for (i = 0; i < 4; i++) {
1131 switch (e->data[i]) {
1132 case 0: c = _("-"); break;
1133 case 1: c = _("Y"); break;
1134 case 2: c = _("Cb"); break;
1135 case 3: c = _("Cr"); break;
1136 case 4: c = _("R"); break;
1137 case 5: c = _("G"); break;
1138 case 6: c = _("B"); break;
1139 default: c = _("Reserved"); break;
1141 strncat (val, c, maxlen-1 - strlen (val));
1143 strncat (val, " ", maxlen-1 - strlen (val));
1146 case EXIF_TAG_EXPOSURE_BIAS_VALUE:
1147 CF (e, EXIF_FORMAT_SRATIONAL, val, maxlen);
1148 CC (e, 1, val, maxlen);
1149 v_srat = exif_get_srational (e->data, o);
1150 if (!v_srat.denominator) {
1151 exif_entry_format_value(e, val, maxlen);
1154 d = (double) v_srat.numerator / (double) v_srat.denominator;
1155 snprintf (val, maxlen, _("%.02f EV"), d);
1157 case EXIF_TAG_SCENE_TYPE:
1158 CF (e, EXIF_FORMAT_UNDEFINED, val, maxlen);
1159 CC (e, 1, val, maxlen);
1160 v_byte = e->data[0];
1162 strncpy (val, _("Directly photographed"), maxlen-1);
1164 snprintf (val, maxlen, _("Internal error (unknown "
1165 "value %i)"), v_byte);
1167 case EXIF_TAG_YCBCR_SUB_SAMPLING:
1168 CF (e, EXIF_FORMAT_SHORT, val, maxlen);
1169 CC (e, 2, val, maxlen);
1170 v_short = exif_get_short (e->data, o);
1171 v_short2 = exif_get_short (
1172 e->data + exif_format_get_size (e->format),
1174 if ((v_short == 2) && (v_short2 == 1))
1175 strncpy (val, _("YCbCr4:2:2"), maxlen-1);
1176 else if ((v_short == 2) && (v_short2 == 2))
1177 strncpy (val, _("YCbCr4:2:0"), maxlen-1);
1179 snprintf (val, maxlen, "%u, %u", v_short, v_short2);
1181 case EXIF_TAG_SUBJECT_AREA:
1182 CF (e, EXIF_FORMAT_SHORT, val, maxlen);
1183 switch (e->components) {
1185 v_short = exif_get_short (e->data, o);
1186 v_short2 = exif_get_short (e->data + 2, o);
1187 snprintf (val, maxlen, "(x,y) = (%i,%i)",
1191 v_short = exif_get_short (e->data, o);
1192 v_short2 = exif_get_short (e->data + 2, o);
1193 v_short3 = exif_get_short (e->data + 4, o);
1194 snprintf (val, maxlen, _("Within distance %i of "
1195 "(x,y) = (%i,%i)"), v_short3, v_short,
1199 v_short = exif_get_short (e->data, o);
1200 v_short2 = exif_get_short (e->data + 2, o);
1201 v_short3 = exif_get_short (e->data + 4, o);
1202 v_short4 = exif_get_short (e->data + 6, o);
1203 snprintf (val, maxlen, _("Within rectangle "
1204 "(width %i, height %i) around "
1205 "(x,y) = (%i,%i)"), v_short3, v_short4,
1209 snprintf (val, maxlen, _("Unexpected number "
1210 "of components (%li, expected 2, 3, or 4)."),
1214 case EXIF_TAG_GPS_VERSION_ID:
1215 /* This is only valid in the GPS IFD */
1216 CF (e, EXIF_FORMAT_BYTE, val, maxlen);
1217 CC (e, 4, val, maxlen);
1218 v_byte = e->data[0];
1219 snprintf (val, maxlen, "%u", v_byte);
1220 for (i = 1; i < e->components; i++) {
1221 v_byte = e->data[i];
1222 snprintf (b, sizeof (b), ".%u", v_byte);
1223 strncat (val, b, maxlen-1 - strlen (val));
1226 case EXIF_TAG_INTEROPERABILITY_VERSION:
1227 /* a.k.a. case EXIF_TAG_GPS_LATITUDE: */
1228 /* This tag occurs in EXIF_IFD_INTEROPERABILITY */
1229 if (e->format == EXIF_FORMAT_UNDEFINED) {
1230 strncpy (val, (char *) e->data, MIN (maxlen-1, e->size));
1233 /* EXIF_TAG_GPS_LATITUDE is the same numerically as
1234 * EXIF_TAG_INTEROPERABILITY_VERSION but in EXIF_IFD_GPS
1236 exif_entry_format_value(e, val, maxlen);
1238 case EXIF_TAG_GPS_ALTITUDE_REF:
1239 /* This is only valid in the GPS IFD */
1240 CF (e, EXIF_FORMAT_BYTE, val, maxlen);
1241 CC (e, 1, val, maxlen);
1242 v_byte = e->data[0];
1244 strncpy (val, _("Sea level"), maxlen-1);
1245 else if (v_byte == 1)
1246 strncpy (val, _("Sea level reference"), maxlen-1);
1248 snprintf (val, maxlen, _("Internal error (unknown "
1249 "value %i)"), v_byte);
1251 case EXIF_TAG_GPS_TIME_STAMP:
1252 /* This is only valid in the GPS IFD */
1253 CF (e, EXIF_FORMAT_RATIONAL, val, maxlen);
1254 CC (e, 3, val, maxlen);
1256 v_rat = exif_get_rational (e->data, o);
1257 if (!v_rat.denominator) {
1258 exif_entry_format_value(e, val, maxlen);
1261 i = v_rat.numerator / v_rat.denominator;
1263 v_rat = exif_get_rational (e->data +
1264 exif_format_get_size (e->format),
1266 if (!v_rat.denominator) {
1267 exif_entry_format_value(e, val, maxlen);
1270 j = v_rat.numerator / v_rat.denominator;
1272 v_rat = exif_get_rational (e->data +
1273 2*exif_format_get_size (e->format),
1275 if (!v_rat.denominator) {
1276 exif_entry_format_value(e, val, maxlen);
1279 d = (double) v_rat.numerator / (double) v_rat.denominator;
1280 snprintf (val, maxlen, "%02u:%02u:%05.2f", i, j, d);
1283 case EXIF_TAG_METERING_MODE:
1284 case EXIF_TAG_COMPRESSION:
1285 case EXIF_TAG_LIGHT_SOURCE:
1286 case EXIF_TAG_FOCAL_PLANE_RESOLUTION_UNIT:
1287 case EXIF_TAG_RESOLUTION_UNIT:
1288 case EXIF_TAG_EXPOSURE_PROGRAM:
1289 case EXIF_TAG_FLASH:
1290 case EXIF_TAG_SUBJECT_DISTANCE_RANGE:
1291 case EXIF_TAG_COLOR_SPACE:
1292 CF (e,EXIF_FORMAT_SHORT, val, maxlen);
1293 CC (e, 1, val, maxlen);
1294 v_short = exif_get_short (e->data, o);
1296 /* Search the tag */
1297 for (i = 0; list2[i].tag && (list2[i].tag != e->tag); i++);
1298 if (!list2[i].tag) {
1299 snprintf (val, maxlen, _("Internal error (unknown "
1300 "value %i)"), v_short);
1304 /* Find the value */
1305 for (j = 0; list2[i].elem[j].values[0] &&
1306 (list2[i].elem[j].index < v_short); j++);
1307 if (list2[i].elem[j].index != v_short) {
1308 snprintf (val, maxlen, _("Internal error (unknown "
1309 "value %i)"), v_short);
1313 /* Find a short enough value */
1314 memset (val, 0, maxlen);
1315 for (k = 0; list2[i].elem[j].values[k]; k++) {
1316 size_t l = strlen (_(list2[i].elem[j].values[k]));
1317 if ((maxlen > l) && (strlen (val) < l))
1318 strncpy (val, _(list2[i].elem[j].values[k]), maxlen-1);
1320 if (!val[0]) snprintf (val, maxlen, "%i", v_short);
1324 case EXIF_TAG_PLANAR_CONFIGURATION:
1325 case EXIF_TAG_SENSING_METHOD:
1326 case EXIF_TAG_ORIENTATION:
1327 case EXIF_TAG_YCBCR_POSITIONING:
1328 case EXIF_TAG_PHOTOMETRIC_INTERPRETATION:
1329 case EXIF_TAG_CUSTOM_RENDERED:
1330 case EXIF_TAG_EXPOSURE_MODE:
1331 case EXIF_TAG_WHITE_BALANCE:
1332 case EXIF_TAG_SCENE_CAPTURE_TYPE:
1333 case EXIF_TAG_GAIN_CONTROL:
1334 case EXIF_TAG_SATURATION:
1335 case EXIF_TAG_CONTRAST:
1336 case EXIF_TAG_SHARPNESS:
1337 CF (e, EXIF_FORMAT_SHORT, val, maxlen);
1338 CC (e, 1, val, maxlen);
1339 v_short = exif_get_short (e->data, o);
1341 /* Search the tag */
1342 for (i = 0; list[i].tag && (list[i].tag != e->tag); i++);
1344 snprintf (val, maxlen, _("Internal error (unknown "
1345 "value %i)"), v_short);
1349 /* Find the value */
1350 for (j = 0; list[i].strings[j] && (j < v_short); j++);
1351 if (!list[i].strings[j])
1352 snprintf (val, maxlen, "%i", v_short);
1353 else if (!*list[i].strings[j])
1354 snprintf (val, maxlen, _("Unknown value %i"), v_short);
1356 strncpy (val, _(list[i].strings[j]), maxlen-1);
1359 case EXIF_TAG_XP_TITLE:
1360 case EXIF_TAG_XP_COMMENT:
1361 case EXIF_TAG_XP_AUTHOR:
1362 case EXIF_TAG_XP_KEYWORDS:
1363 case EXIF_TAG_XP_SUBJECT:
1365 unsigned short *utf16;
1367 /* Sanity check the size to prevent overflow */
1368 if (e->size+sizeof(unsigned short) < e->size) break;
1370 /* The tag may not be U+0000-terminated , so make a local
1371 U+0000-terminated copy before converting it */
1372 utf16 = exif_mem_alloc (e->priv->mem, e->size+sizeof(unsigned short));
1374 memcpy(utf16, e->data, e->size);
1375 utf16[e->size/sizeof(unsigned short)] = 0;
1377 /* Warning! The texts are converted from UTF16 to UTF8 */
1378 /* FIXME: use iconv to convert into the locale encoding */
1379 exif_convert_utf16_to_utf8(val, utf16, maxlen);
1380 exif_mem_free(e->priv->mem, utf16);
1385 /* Use a generic value formatting */
1386 exif_entry_format_value(e, val, maxlen);
1394 * \bug Log and report failed exif_mem_malloc() calls.
1397 exif_entry_initialize (ExifEntry *e, ExifTag tag)
1402 /* We need the byte order */
1403 if (!e || !e->parent || e->data || !e->parent->parent)
1405 o = exif_data_get_byte_order (e->parent->parent);
1410 /* LONG, 1 component, no default */
1411 case EXIF_TAG_PIXEL_X_DIMENSION:
1412 case EXIF_TAG_PIXEL_Y_DIMENSION:
1413 case EXIF_TAG_EXIF_IFD_POINTER:
1414 case EXIF_TAG_GPS_INFO_IFD_POINTER:
1415 case EXIF_TAG_INTEROPERABILITY_IFD_POINTER:
1416 case EXIF_TAG_JPEG_INTERCHANGE_FORMAT_LENGTH:
1417 case EXIF_TAG_JPEG_INTERCHANGE_FORMAT:
1419 e->format = EXIF_FORMAT_LONG;
1420 e->size = exif_format_get_size (e->format) * e->components;
1421 e->data = exif_entry_alloc (e, e->size);
1422 if (!e->data) break;
1425 /* SHORT, 1 component, no default */
1426 case EXIF_TAG_SUBJECT_LOCATION:
1427 case EXIF_TAG_SENSING_METHOD:
1428 case EXIF_TAG_PHOTOMETRIC_INTERPRETATION:
1429 case EXIF_TAG_COMPRESSION:
1430 case EXIF_TAG_EXPOSURE_MODE:
1431 case EXIF_TAG_WHITE_BALANCE:
1432 case EXIF_TAG_FOCAL_LENGTH_IN_35MM_FILM:
1433 case EXIF_TAG_GAIN_CONTROL:
1434 case EXIF_TAG_SUBJECT_DISTANCE_RANGE:
1435 case EXIF_TAG_FLASH:
1436 case EXIF_TAG_ISO_SPEED_RATINGS:
1438 /* SHORT, 1 component, default 0 */
1439 case EXIF_TAG_IMAGE_WIDTH:
1440 case EXIF_TAG_IMAGE_LENGTH:
1441 case EXIF_TAG_EXPOSURE_PROGRAM:
1442 case EXIF_TAG_LIGHT_SOURCE:
1443 case EXIF_TAG_METERING_MODE:
1444 case EXIF_TAG_CUSTOM_RENDERED:
1445 case EXIF_TAG_SCENE_CAPTURE_TYPE:
1446 case EXIF_TAG_CONTRAST:
1447 case EXIF_TAG_SATURATION:
1448 case EXIF_TAG_SHARPNESS:
1450 e->format = EXIF_FORMAT_SHORT;
1451 e->size = exif_format_get_size (e->format) * e->components;
1452 e->data = exif_entry_alloc (e, e->size);
1453 if (!e->data) break;
1454 exif_set_short (e->data, o, 0);
1457 /* SHORT, 1 component, default 1 */
1458 case EXIF_TAG_ORIENTATION:
1459 case EXIF_TAG_PLANAR_CONFIGURATION:
1460 case EXIF_TAG_YCBCR_POSITIONING:
1462 e->format = EXIF_FORMAT_SHORT;
1463 e->size = exif_format_get_size (e->format) * e->components;
1464 e->data = exif_entry_alloc (e, e->size);
1465 if (!e->data) break;
1466 exif_set_short (e->data, o, 1);
1469 /* SHORT, 1 component, default 2 */
1470 case EXIF_TAG_RESOLUTION_UNIT:
1471 case EXIF_TAG_FOCAL_PLANE_RESOLUTION_UNIT:
1473 e->format = EXIF_FORMAT_SHORT;
1474 e->size = exif_format_get_size (e->format) * e->components;
1475 e->data = exif_entry_alloc (e, e->size);
1476 if (!e->data) break;
1477 exif_set_short (e->data, o, 2);
1480 /* SHORT, 1 component, default 3 */
1481 case EXIF_TAG_SAMPLES_PER_PIXEL:
1483 e->format = EXIF_FORMAT_SHORT;
1484 e->size = exif_format_get_size (e->format) * e->components;
1485 e->data = exif_entry_alloc (e, e->size);
1486 if (!e->data) break;
1487 exif_set_short (e->data, o, 3);
1490 /* SHORT, 1 component, default 0xffff */
1491 case EXIF_TAG_COLOR_SPACE:
1493 e->format = EXIF_FORMAT_SHORT;
1494 e->size = exif_format_get_size (e->format) * e->components;
1495 e->data = exif_entry_alloc (e, e->size);
1496 if (!e->data) break;
1497 exif_set_short (e->data, o, 0xffff);
1500 /* SHORT, 3 components, default 8 8 8 */
1501 case EXIF_TAG_BITS_PER_SAMPLE:
1503 e->format = EXIF_FORMAT_SHORT;
1504 e->size = exif_format_get_size (e->format) * e->components;
1505 e->data = exif_entry_alloc (e, e->size);
1506 if (!e->data) break;
1507 exif_set_short (e->data, o, 8);
1509 e->data + exif_format_get_size (e->format),
1512 e->data + 2 * exif_format_get_size (e->format),
1516 /* SHORT, 2 components, default 2 1 */
1517 case EXIF_TAG_YCBCR_SUB_SAMPLING:
1519 e->format = EXIF_FORMAT_SHORT;
1520 e->size = exif_format_get_size (e->format) * e->components;
1521 e->data = exif_entry_alloc (e, e->size);
1522 if (!e->data) break;
1523 exif_set_short (e->data, o, 2);
1525 e->data + exif_format_get_size (e->format),
1529 /* SRATIONAL, 1 component, no default */
1530 case EXIF_TAG_EXPOSURE_BIAS_VALUE:
1531 case EXIF_TAG_BRIGHTNESS_VALUE:
1532 case EXIF_TAG_SHUTTER_SPEED_VALUE:
1534 e->format = EXIF_FORMAT_SRATIONAL;
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;
1540 /* RATIONAL, 1 component, no default */
1541 case EXIF_TAG_EXPOSURE_TIME:
1542 case EXIF_TAG_FOCAL_PLANE_X_RESOLUTION:
1543 case EXIF_TAG_FOCAL_PLANE_Y_RESOLUTION:
1544 case EXIF_TAG_EXPOSURE_INDEX:
1545 case EXIF_TAG_FLASH_ENERGY:
1546 case EXIF_TAG_FNUMBER:
1547 case EXIF_TAG_FOCAL_LENGTH:
1548 case EXIF_TAG_SUBJECT_DISTANCE:
1549 case EXIF_TAG_MAX_APERTURE_VALUE:
1550 case EXIF_TAG_APERTURE_VALUE:
1551 case EXIF_TAG_COMPRESSED_BITS_PER_PIXEL:
1552 case EXIF_TAG_PRIMARY_CHROMATICITIES:
1553 case EXIF_TAG_DIGITAL_ZOOM_RATIO:
1555 e->format = EXIF_FORMAT_RATIONAL;
1556 e->size = exif_format_get_size (e->format) * e->components;
1557 e->data = exif_entry_alloc (e, e->size);
1558 if (!e->data) break;
1561 /* RATIONAL, 1 component, default 72/1 */
1562 case EXIF_TAG_X_RESOLUTION:
1563 case EXIF_TAG_Y_RESOLUTION:
1565 e->format = EXIF_FORMAT_RATIONAL;
1566 e->size = exif_format_get_size (e->format) * e->components;
1567 e->data = exif_entry_alloc (e, e->size);
1568 if (!e->data) break;
1571 exif_set_rational (e->data, o, r);
1574 /* RATIONAL, 2 components, no default */
1575 case EXIF_TAG_WHITE_POINT:
1577 e->format = EXIF_FORMAT_RATIONAL;
1578 e->size = exif_format_get_size (e->format) * e->components;
1579 e->data = exif_entry_alloc (e, e->size);
1580 if (!e->data) break;
1583 /* RATIONAL, 6 components */
1584 case EXIF_TAG_REFERENCE_BLACK_WHITE:
1586 e->format = EXIF_FORMAT_RATIONAL;
1587 e->size = exif_format_get_size (e->format) * e->components;
1588 e->data = exif_entry_alloc (e, e->size);
1589 if (!e->data) break;
1592 exif_set_rational (e->data, o, r);
1595 e->data + exif_format_get_size (e->format), o, r);
1598 e->data + 2 * exif_format_get_size (e->format), o, r);
1601 e->data + 3 * exif_format_get_size (e->format), o, r);
1604 e->data + 4 * exif_format_get_size (e->format), o, r);
1607 e->data + 5 * exif_format_get_size (e->format), o, r);
1610 /* ASCII, 20 components */
1611 case EXIF_TAG_DATE_TIME:
1612 case EXIF_TAG_DATE_TIME_ORIGINAL:
1613 case EXIF_TAG_DATE_TIME_DIGITIZED:
1616 #ifdef HAVE_LOCALTIME_R
1622 #ifdef HAVE_LOCALTIME_R
1623 tm = localtime_r (&t, &tms);
1625 tm = localtime (&t);
1628 e->format = EXIF_FORMAT_ASCII;
1629 e->size = exif_format_get_size (e->format) * e->components;
1630 e->data = exif_entry_alloc (e, e->size);
1631 if (!e->data) break;
1632 snprintf ((char *) e->data, e->size,
1633 "%04i:%02i:%02i %02i:%02i:%02i",
1634 tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
1635 tm->tm_hour, tm->tm_min, tm->tm_sec);
1639 /* ASCII, no default */
1640 case EXIF_TAG_SUB_SEC_TIME:
1641 case EXIF_TAG_SUB_SEC_TIME_ORIGINAL:
1642 case EXIF_TAG_SUB_SEC_TIME_DIGITIZED:
1644 e->format = EXIF_FORMAT_ASCII;
1649 /* ASCII, default "[None]" */
1650 case EXIF_TAG_IMAGE_DESCRIPTION:
1652 case EXIF_TAG_MODEL:
1653 case EXIF_TAG_SOFTWARE:
1654 case EXIF_TAG_ARTIST:
1655 e->components = strlen (_("[None]")) + 1;
1656 e->format = EXIF_FORMAT_ASCII;
1657 e->size = exif_format_get_size (e->format) * e->components;
1658 e->data = exif_entry_alloc (e, e->size);
1659 if (!e->data) break;
1660 strncpy ((char *)e->data, _("[None]"), e->size);
1662 /* ASCII, default "[None]\0[None]\0" */
1663 case EXIF_TAG_COPYRIGHT:
1664 e->components = (strlen (_("[None]")) + 1) * 2;
1665 e->format = EXIF_FORMAT_ASCII;
1666 e->size = exif_format_get_size (e->format) * e->components;
1667 e->data = exif_entry_alloc (e, e->size);
1668 if (!e->data) break;
1669 strcpy (((char *)e->data) + 0, _("[None]"));
1670 strcpy (((char *)e->data) + strlen (_("[None]")) + 1, _("[None]"));
1673 /* UNDEFINED, 1 component, default 1 */
1674 case EXIF_TAG_SCENE_TYPE:
1676 e->format = EXIF_FORMAT_UNDEFINED;
1677 e->size = exif_format_get_size (e->format) * e->components;
1678 e->data = exif_entry_alloc (e, e->size);
1679 if (!e->data) break;
1683 /* UNDEFINED, 1 component, default 3 */
1684 case EXIF_TAG_FILE_SOURCE:
1686 e->format = EXIF_FORMAT_UNDEFINED;
1687 e->size = exif_format_get_size (e->format) * e->components;
1688 e->data = exif_entry_alloc (e, e->size);
1689 if (!e->data) break;
1693 /* UNDEFINED, 4 components, default 48 49 48 48 */
1694 case EXIF_TAG_FLASH_PIX_VERSION:
1696 e->format = EXIF_FORMAT_UNDEFINED;
1697 e->size = exif_format_get_size (e->format) * e->components;
1698 e->data = exif_entry_alloc (e, e->size);
1699 if (!e->data) break;
1700 memcpy (e->data, "0100", 4);
1703 /* UNDEFINED, 4 components, default 48 50 49 48 */
1704 case EXIF_TAG_EXIF_VERSION:
1706 e->format = EXIF_FORMAT_UNDEFINED;
1707 e->size = exif_format_get_size (e->format) * e->components;
1708 e->data = exif_entry_alloc (e, e->size);
1709 if (!e->data) break;
1710 memcpy (e->data, "0210", 4);
1713 /* UNDEFINED, 4 components, default 1 2 3 0 */
1714 case EXIF_TAG_COMPONENTS_CONFIGURATION:
1716 e->format = EXIF_FORMAT_UNDEFINED;
1717 e->size = exif_format_get_size (e->format) * e->components;
1718 e->data = exif_entry_alloc (e, e->size);
1719 if (!e->data) break;
1726 /* UNDEFINED, no components, no default */
1727 /* Use this if the tag is otherwise unsupported */
1728 case EXIF_TAG_MAKER_NOTE:
1729 case EXIF_TAG_USER_COMMENT:
1732 e->format = EXIF_FORMAT_UNDEFINED;