| /* exif-entry.c |
| * |
| * Copyright (c) 2001 Lutz Mueller <lutz@users.sourceforge.net> |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with this library; if not, write to the |
| * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301 USA. |
| */ |
| |
| #include <config.h> |
| |
| #include <libexif/exif-entry.h> |
| #include <libexif/exif-ifd.h> |
| #include <libexif/exif-utils.h> |
| #include <libexif/i18n.h> |
| |
| #include <ctype.h> |
| #include <stdlib.h> |
| #include <stdio.h> |
| #include <string.h> |
| #include <time.h> |
| #include <math.h> |
| #include <limits.h> |
| #include <log/log.h> |
| |
| #ifndef M_PI |
| #define M_PI 3.14159265358979323846 |
| #endif |
| |
| struct _ExifEntryPrivate |
| { |
| unsigned int ref_count; |
| |
| ExifMem *mem; |
| }; |
| |
| /* This function is hidden in exif-data.c */ |
| ExifLog *exif_data_get_log (ExifData *); |
| |
| #ifndef NO_VERBOSE_TAG_STRINGS |
| static void |
| exif_entry_log (ExifEntry *e, ExifLogCode code, const char *format, ...) |
| { |
| va_list args; |
| ExifLog *l = NULL; |
| |
| if (e && e->parent && e->parent->parent) |
| l = exif_data_get_log (e->parent->parent); |
| va_start (args, format); |
| exif_logv (l, code, "ExifEntry", format, args); |
| va_end (args); |
| } |
| #else |
| #if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L |
| #define exif_entry_log(...) do { } while (0) |
| #elif defined(__GNUC__) |
| #define exif_entry_log(x...) do { } while (0) |
| #else |
| #define exif_entry_log (void) |
| #endif |
| #endif |
| |
| static void * |
| exif_entry_alloc (ExifEntry *e, unsigned int i) |
| { |
| void *d; |
| ExifLog *l = NULL; |
| |
| if (!e || !e->priv || !i) return NULL; |
| |
| d = exif_mem_alloc (e->priv->mem, i); |
| if (d) return d; |
| |
| if (e->parent && e->parent->parent) |
| l = exif_data_get_log (e->parent->parent); |
| EXIF_LOG_NO_MEMORY (l, "ExifEntry", i); |
| return NULL; |
| } |
| |
| static void * |
| exif_entry_realloc (ExifEntry *e, void *d_orig, unsigned int i) |
| { |
| void *d; |
| ExifLog *l = NULL; |
| |
| if (!e || !e->priv) return NULL; |
| |
| if (!i) { exif_mem_free (e->priv->mem, d_orig); return NULL; } |
| |
| d = exif_mem_realloc (e->priv->mem, d_orig, i); |
| if (d) return d; |
| |
| if (e->parent && e->parent->parent) |
| l = exif_data_get_log (e->parent->parent); |
| EXIF_LOG_NO_MEMORY (l, "ExifEntry", i); |
| return NULL; |
| } |
| |
| ExifEntry * |
| exif_entry_new (void) |
| { |
| ExifMem *mem = exif_mem_new_default (); |
| ExifEntry *e = exif_entry_new_mem (mem); |
| |
| exif_mem_unref (mem); |
| |
| return e; |
| } |
| |
| ExifEntry * |
| exif_entry_new_mem (ExifMem *mem) |
| { |
| ExifEntry *e = NULL; |
| |
| e = exif_mem_alloc (mem, sizeof (ExifEntry)); |
| if (!e) return NULL; |
| e->priv = exif_mem_alloc (mem, sizeof (ExifEntryPrivate)); |
| if (!e->priv) { exif_mem_free (mem, e); return NULL; } |
| e->priv->ref_count = 1; |
| |
| e->priv->mem = mem; |
| exif_mem_ref (mem); |
| |
| return e; |
| } |
| |
| void |
| exif_entry_ref (ExifEntry *e) |
| { |
| if (!e) return; |
| |
| e->priv->ref_count++; |
| } |
| |
| void |
| exif_entry_unref (ExifEntry *e) |
| { |
| if (!e) return; |
| |
| e->priv->ref_count--; |
| if (!e->priv->ref_count) |
| exif_entry_free (e); |
| } |
| |
| void |
| exif_entry_free (ExifEntry *e) |
| { |
| if (!e) return; |
| |
| if (e->priv) { |
| ExifMem *mem = e->priv->mem; |
| if (e->data) |
| exif_mem_free (mem, e->data); |
| exif_mem_free (mem, e->priv); |
| exif_mem_free (mem, e); |
| exif_mem_unref (mem); |
| } |
| } |
| |
| /*! Get a value and convert it to an ExifShort. |
| * \bug Not all types are converted that could be converted and no indication |
| * is made when that occurs |
| */ |
| static inline ExifShort |
| exif_get_short_convert (const unsigned char *buf, ExifFormat format, |
| ExifByteOrder order) |
| { |
| switch (format) { |
| case EXIF_FORMAT_LONG: |
| return (ExifShort) exif_get_long (buf, order); |
| case EXIF_FORMAT_SLONG: |
| return (ExifShort) exif_get_slong (buf, order); |
| case EXIF_FORMAT_SHORT: |
| return (ExifShort) exif_get_short (buf, order); |
| case EXIF_FORMAT_SSHORT: |
| return (ExifShort) exif_get_sshort (buf, order); |
| case EXIF_FORMAT_BYTE: |
| case EXIF_FORMAT_SBYTE: |
| return (ExifShort) buf[0]; |
| default: |
| /* Unsupported type */ |
| return (ExifShort) 0; |
| } |
| } |
| |
| void |
| exif_entry_fix (ExifEntry *e) |
| { |
| unsigned int i, newsize; |
| unsigned char *newdata; |
| ExifByteOrder o; |
| ExifRational r; |
| ExifSRational sr; |
| |
| if (!e || !e->priv) return; |
| |
| switch (e->tag) { |
| |
| /* These tags all need to be of format SHORT. */ |
| case EXIF_TAG_YCBCR_SUB_SAMPLING: |
| case EXIF_TAG_SUBJECT_AREA: |
| case EXIF_TAG_COLOR_SPACE: |
| case EXIF_TAG_PLANAR_CONFIGURATION: |
| case EXIF_TAG_SENSING_METHOD: |
| case EXIF_TAG_ORIENTATION: |
| case EXIF_TAG_YCBCR_POSITIONING: |
| case EXIF_TAG_PHOTOMETRIC_INTERPRETATION: |
| case EXIF_TAG_CUSTOM_RENDERED: |
| case EXIF_TAG_EXPOSURE_MODE: |
| case EXIF_TAG_WHITE_BALANCE: |
| case EXIF_TAG_SCENE_CAPTURE_TYPE: |
| case EXIF_TAG_GAIN_CONTROL: |
| case EXIF_TAG_SATURATION: |
| case EXIF_TAG_CONTRAST: |
| case EXIF_TAG_SHARPNESS: |
| case EXIF_TAG_ISO_SPEED_RATINGS: |
| switch (e->format) { |
| case EXIF_FORMAT_LONG: |
| case EXIF_FORMAT_SLONG: |
| case EXIF_FORMAT_BYTE: |
| case EXIF_FORMAT_SBYTE: |
| case EXIF_FORMAT_SSHORT: |
| if (!e->parent || !e->parent->parent) break; |
| exif_entry_log (e, EXIF_LOG_CODE_DEBUG, |
| _("Tag '%s' was of format '%s' (which is " |
| "against specification) and has been " |
| "changed to format '%s'."), |
| exif_tag_get_name_in_ifd(e->tag, |
| exif_entry_get_ifd(e)), |
| exif_format_get_name (e->format), |
| exif_format_get_name (EXIF_FORMAT_SHORT)); |
| |
| o = exif_data_get_byte_order (e->parent->parent); |
| newsize = e->components * exif_format_get_size (EXIF_FORMAT_SHORT); |
| newdata = exif_entry_alloc (e, newsize); |
| if (!newdata) { |
| exif_entry_log (e, EXIF_LOG_CODE_NO_MEMORY, |
| "Could not allocate %lu byte(s).", (unsigned long)newsize); |
| break; |
| } |
| |
| for (i = 0; i < e->components; i++) |
| exif_set_short ( |
| newdata + i * |
| exif_format_get_size ( |
| EXIF_FORMAT_SHORT), o, |
| exif_get_short_convert ( |
| e->data + i * |
| exif_format_get_size (e->format), |
| e->format, o)); |
| |
| exif_mem_free (e->priv->mem, e->data); |
| e->data = newdata; |
| e->size = newsize; |
| e->format = EXIF_FORMAT_SHORT; |
| break; |
| case EXIF_FORMAT_SHORT: |
| /* No conversion necessary */ |
| break; |
| default: |
| exif_entry_log (e, EXIF_LOG_CODE_CORRUPT_DATA, |
| _("Tag '%s' is of format '%s' (which is " |
| "against specification) but cannot be changed " |
| "to format '%s'."), |
| exif_tag_get_name_in_ifd(e->tag, |
| exif_entry_get_ifd(e)), |
| exif_format_get_name (e->format), |
| exif_format_get_name (EXIF_FORMAT_SHORT)); |
| break; |
| } |
| break; |
| |
| /* All these tags need to be of format 'Rational'. */ |
| case EXIF_TAG_FNUMBER: |
| case EXIF_TAG_APERTURE_VALUE: |
| case EXIF_TAG_EXPOSURE_TIME: |
| case EXIF_TAG_FOCAL_LENGTH: |
| switch (e->format) { |
| case EXIF_FORMAT_SRATIONAL: |
| if (!e->parent || !e->parent->parent) break; |
| o = exif_data_get_byte_order (e->parent->parent); |
| for (i = 0; i < e->components; i++) { |
| sr = exif_get_srational (e->data + i * |
| exif_format_get_size ( |
| EXIF_FORMAT_SRATIONAL), o); |
| r.numerator = (ExifLong) sr.numerator; |
| r.denominator = (ExifLong) sr.denominator; |
| exif_set_rational (e->data + i * |
| exif_format_get_size ( |
| EXIF_FORMAT_RATIONAL), o, r); |
| } |
| e->format = EXIF_FORMAT_RATIONAL; |
| exif_entry_log (e, EXIF_LOG_CODE_DEBUG, |
| _("Tag '%s' was of format '%s' (which is " |
| "against specification) and has been " |
| "changed to format '%s'."), |
| exif_tag_get_name_in_ifd(e->tag, |
| exif_entry_get_ifd(e)), |
| exif_format_get_name (EXIF_FORMAT_SRATIONAL), |
| exif_format_get_name (EXIF_FORMAT_RATIONAL)); |
| break; |
| default: |
| break; |
| } |
| break; |
| |
| /* All these tags need to be of format 'SRational'. */ |
| case EXIF_TAG_EXPOSURE_BIAS_VALUE: |
| case EXIF_TAG_BRIGHTNESS_VALUE: |
| case EXIF_TAG_SHUTTER_SPEED_VALUE: |
| switch (e->format) { |
| case EXIF_FORMAT_RATIONAL: |
| if (!e->parent || !e->parent->parent) break; |
| o = exif_data_get_byte_order (e->parent->parent); |
| for (i = 0; i < e->components; i++) { |
| r = exif_get_rational (e->data + i * |
| exif_format_get_size ( |
| EXIF_FORMAT_RATIONAL), o); |
| sr.numerator = (ExifLong) r.numerator; |
| sr.denominator = (ExifLong) r.denominator; |
| exif_set_srational (e->data + i * |
| exif_format_get_size ( |
| EXIF_FORMAT_SRATIONAL), o, sr); |
| } |
| e->format = EXIF_FORMAT_SRATIONAL; |
| exif_entry_log (e, EXIF_LOG_CODE_DEBUG, |
| _("Tag '%s' was of format '%s' (which is " |
| "against specification) and has been " |
| "changed to format '%s'."), |
| exif_tag_get_name_in_ifd(e->tag, |
| exif_entry_get_ifd(e)), |
| exif_format_get_name (EXIF_FORMAT_RATIONAL), |
| exif_format_get_name (EXIF_FORMAT_SRATIONAL)); |
| break; |
| default: |
| break; |
| } |
| break; |
| |
| case EXIF_TAG_USER_COMMENT: |
| |
| /* Format needs to be UNDEFINED. */ |
| if (e->format != EXIF_FORMAT_UNDEFINED) { |
| exif_entry_log (e, EXIF_LOG_CODE_DEBUG, |
| _("Tag 'UserComment' had invalid format '%s'. " |
| "Format has been set to 'undefined'."), |
| exif_format_get_name (e->format)); |
| e->format = EXIF_FORMAT_UNDEFINED; |
| } |
| |
| /* Some packages like Canon ZoomBrowser EX 4.5 store |
| only one zero byte followed by 7 bytes of rubbish */ |
| if ((e->size >= 8) && (e->data[0] == 0)) { |
| memcpy(e->data, "\0\0\0\0\0\0\0\0", 8); |
| } |
| |
| /* There need to be at least 8 bytes. */ |
| if (e->size < 8) { |
| e->data = exif_entry_realloc (e, e->data, 8 + e->size); |
| if (!e->data) { |
| e->size = 0; |
| e->components = 0; |
| return; |
| } |
| |
| /* Assume ASCII */ |
| memmove (e->data + 8, e->data, e->size); |
| memcpy (e->data, "ASCII\0\0\0", 8); |
| e->size += 8; |
| e->components += 8; |
| exif_entry_log (e, EXIF_LOG_CODE_DEBUG, |
| _("Tag 'UserComment' has been expanded to at " |
| "least 8 bytes in order to follow the " |
| "specification.")); |
| break; |
| } |
| |
| /* |
| * If the first 8 bytes are empty and real data starts |
| * afterwards, let's assume ASCII and claim the 8 first |
| * bytes for the format specifyer. |
| */ |
| for (i = 0; (i < e->size) && !e->data[i]; i++); |
| if (!i) for ( ; (i < e->size) && (e->data[i] == ' '); i++); |
| if ((i >= 8) && (i < e->size)) { |
| exif_entry_log (e, EXIF_LOG_CODE_DEBUG, |
| _("Tag 'UserComment' is not empty but does not " |
| "start with a format identifier. " |
| "This has been fixed.")); |
| memcpy (e->data, "ASCII\0\0\0", 8); |
| break; |
| } |
| |
| /* |
| * First 8 bytes need to follow the specification. If they don't, |
| * assume ASCII. |
| */ |
| if (memcmp (e->data, "ASCII\0\0\0" , 8) && |
| memcmp (e->data, "UNICODE\0" , 8) && |
| memcmp (e->data, "JIS\0\0\0\0\0" , 8) && |
| memcmp (e->data, "\0\0\0\0\0\0\0\0", 8)) { |
| e->data = exif_entry_realloc (e, e->data, 8 + e->size); |
| if (!e->data) { |
| e->size = 0; |
| e->components = 0; |
| break; |
| } |
| |
| /* Assume ASCII */ |
| memmove (e->data + 8, e->data, e->size); |
| memcpy (e->data, "ASCII\0\0\0", 8); |
| e->size += 8; |
| e->components += 8; |
| exif_entry_log (e, EXIF_LOG_CODE_DEBUG, |
| _("Tag 'UserComment' did not start with a " |
| "format identifier. This has been fixed.")); |
| break; |
| } |
| |
| break; |
| default: |
| break; |
| } |
| } |
| |
| /*! Format the value of an ExifEntry for human display in a generic way. |
| * The output is localized. The formatting is independent of the tag number |
| * and is based entirely on the data type. |
| * \pre The ExifEntry is already a member of an ExifData. |
| * \param[in] e EXIF entry |
| * \param[out] val buffer in which to store value |
| * \param[in] maxlen one less than the length of the buffer val |
| */ |
| static void |
| exif_entry_format_value(ExifEntry *e, char *val, size_t maxlen) |
| { |
| ExifByte v_byte; |
| ExifShort v_short; |
| ExifSShort v_sshort; |
| ExifLong v_long; |
| ExifRational v_rat; |
| ExifSRational v_srat; |
| ExifSLong v_slong; |
| unsigned int i; |
| size_t len; |
| const ExifByteOrder o = exif_data_get_byte_order (e->parent->parent); |
| |
| if (!e->size || !maxlen) |
| return; |
| ++maxlen; /* include the terminating NUL */ |
| switch (e->format) { |
| case EXIF_FORMAT_UNDEFINED: |
| snprintf (val, maxlen, _("%i bytes undefined data"), e->size); |
| break; |
| case EXIF_FORMAT_BYTE: |
| case EXIF_FORMAT_SBYTE: |
| v_byte = e->data[0]; |
| snprintf (val, maxlen, "0x%02x", v_byte); |
| len = strlen (val); |
| for (i = 1; i < e->components; i++) { |
| v_byte = e->data[i]; |
| snprintf (val+len, maxlen-len, ", 0x%02x", v_byte); |
| len += strlen (val+len); |
| if (len >= maxlen-1) break; |
| } |
| break; |
| case EXIF_FORMAT_SHORT: |
| v_short = exif_get_short (e->data, o); |
| snprintf (val, maxlen, "%u", v_short); |
| len = strlen (val); |
| for (i = 1; i < e->components; i++) { |
| v_short = exif_get_short (e->data + |
| exif_format_get_size (e->format) * i, o); |
| snprintf (val+len, maxlen-len, ", %u", v_short); |
| len += strlen (val+len); |
| if (len >= maxlen-1) break; |
| } |
| break; |
| case EXIF_FORMAT_SSHORT: |
| v_sshort = exif_get_sshort (e->data, o); |
| snprintf (val, maxlen, "%i", v_sshort); |
| len = strlen (val); |
| for (i = 1; i < e->components; i++) { |
| v_sshort = exif_get_short (e->data + |
| exif_format_get_size (e->format) * |
| i, o); |
| snprintf (val+len, maxlen-len, ", %i", v_sshort); |
| len += strlen (val+len); |
| if (len >= maxlen-1) break; |
| } |
| break; |
| case EXIF_FORMAT_LONG: |
| v_long = exif_get_long (e->data, o); |
| snprintf (val, maxlen, "%lu", (unsigned long) v_long); |
| len = strlen (val); |
| for (i = 1; i < e->components; i++) { |
| v_long = exif_get_long (e->data + |
| exif_format_get_size (e->format) * |
| i, o); |
| snprintf (val+len, maxlen-len, ", %lu", (unsigned long) v_long); |
| len += strlen (val+len); |
| if (len >= maxlen-1) break; |
| } |
| break; |
| case EXIF_FORMAT_SLONG: |
| v_slong = exif_get_slong (e->data, o); |
| snprintf (val, maxlen, "%li", (long) v_slong); |
| len = strlen (val); |
| for (i = 1; i < e->components; i++) { |
| v_slong = exif_get_slong (e->data + |
| exif_format_get_size (e->format) * i, o); |
| snprintf (val+len, maxlen-len, ", %li", (long) v_slong); |
| len += strlen (val+len); |
| if (len >= maxlen-1) break; |
| } |
| break; |
| case EXIF_FORMAT_ASCII: |
| strncpy (val, (char *) e->data, MIN (maxlen-1, e->size)); |
| val[MIN (maxlen-1, e->size)] = 0; |
| break; |
| case EXIF_FORMAT_RATIONAL: |
| len = 0; |
| for (i = 0; i < e->components; i++) { |
| if (i > 0) { |
| snprintf (val+len, maxlen-len, ", "); |
| len += strlen (val+len); |
| } |
| v_rat = exif_get_rational ( |
| e->data + 8 * i, o); |
| if (v_rat.denominator) { |
| /* |
| * Choose the number of significant digits to |
| * display based on the size of the denominator. |
| * It is scaled so that denominators within the |
| * range 13..120 will show 2 decimal points. |
| */ |
| int decimals = (int)(log10(v_rat.denominator)-0.08+1.0); |
| snprintf (val+len, maxlen-len, "%2.*f", |
| decimals, |
| (double) v_rat.numerator / |
| (double) v_rat.denominator); |
| } else |
| snprintf (val+len, maxlen-len, "%lu/%lu", |
| (unsigned long) v_rat.numerator, |
| (unsigned long) v_rat.denominator); |
| len += strlen (val+len); |
| if (len >= maxlen-1) break; |
| } |
| break; |
| case EXIF_FORMAT_SRATIONAL: |
| len = 0; |
| for (i = 0; i < e->components; i++) { |
| if (i > 0) { |
| snprintf (val+len, maxlen-len, ", "); |
| len += strlen (val+len); |
| } |
| v_srat = exif_get_srational ( |
| e->data + 8 * i, o); |
| if (v_srat.denominator) { |
| int decimals = (int)(log10(fabs(v_srat.denominator))-0.08+1.0); |
| snprintf (val+len, maxlen-len, "%2.*f", |
| decimals, |
| (double) v_srat.numerator / |
| (double) v_srat.denominator); |
| } else |
| snprintf (val+len, maxlen-len, "%li/%li", |
| (long) v_srat.numerator, |
| (long) v_srat.denominator); |
| len += strlen (val+len); |
| if (len >= maxlen-1) break; |
| } |
| break; |
| case EXIF_FORMAT_DOUBLE: |
| case EXIF_FORMAT_FLOAT: |
| default: |
| snprintf (val, maxlen, _("%i bytes unsupported data type"), |
| e->size); |
| break; |
| } |
| } |
| |
| void |
| exif_entry_dump (ExifEntry *e, unsigned int indent) |
| { |
| char buf[1024]; |
| char value[1024]; |
| unsigned int i; |
| |
| for (i = 0; i < 2 * indent; i++) |
| buf[i] = ' '; |
| buf[i] = '\0'; |
| |
| if (!e) |
| return; |
| |
| printf ("%sTag: 0x%x ('%s')\n", buf, e->tag, |
| exif_tag_get_name_in_ifd (e->tag, exif_entry_get_ifd(e))); |
| printf ("%s Format: %i ('%s')\n", buf, e->format, |
| exif_format_get_name (e->format)); |
| printf ("%s Components: %i\n", buf, (int) e->components); |
| printf ("%s Size: %i\n", buf, e->size); |
| printf ("%s Value: %s\n", buf, exif_entry_get_value (e, value, sizeof(value))); |
| } |
| |
| /*! Check if a string consists entirely of a single, repeated character. |
| * Up to first n bytes are checked. |
| * |
| * \param[in] data pointer of string to check |
| * \param[in] ch character to match |
| * \param[in] n maximum number of characters to match |
| * |
| * \return 0 if the string matches or is of zero length, nonzero otherwise |
| */ |
| static int |
| match_repeated_char(const unsigned char *data, unsigned char ch, size_t n) |
| { |
| int i; |
| for (i=n; i; --i, ++data) { |
| if (*data == 0) { |
| i = 0; /* all bytes before NUL matched */ |
| break; |
| } |
| if (*data != ch) |
| break; |
| } |
| return i; |
| } |
| |
| #define CF(entry,target,v,maxlen) \ |
| { \ |
| if (entry->format != target) { \ |
| exif_entry_log (entry, EXIF_LOG_CODE_CORRUPT_DATA, \ |
| _("The tag '%s' contains data of an invalid " \ |
| "format ('%s', expected '%s')."), \ |
| exif_tag_get_name (entry->tag), \ |
| exif_format_get_name (entry->format), \ |
| exif_format_get_name (target)); \ |
| break; \ |
| } \ |
| } |
| |
| #define CC(entry,target,v,maxlen) \ |
| { \ |
| if (entry->components != target) { \ |
| exif_entry_log (entry, EXIF_LOG_CODE_CORRUPT_DATA, \ |
| _("The tag '%s' contains an invalid number of " \ |
| "components (%i, expected %i)."), \ |
| exif_tag_get_name (entry->tag), \ |
| (int) entry->components, (int) target); \ |
| break; \ |
| } \ |
| } |
| |
| static const struct { |
| ExifTag tag; |
| const char *strings[10]; |
| } list[] = { |
| #ifndef NO_VERBOSE_TAG_DATA |
| { EXIF_TAG_PLANAR_CONFIGURATION, |
| { N_("Chunky format"), N_("Planar format"), NULL}}, |
| { EXIF_TAG_SENSING_METHOD, |
| { "", N_("Not defined"), N_("One-chip color area sensor"), |
| N_("Two-chip color area sensor"), N_("Three-chip color area sensor"), |
| N_("Color sequential area sensor"), "", N_("Trilinear sensor"), |
| N_("Color sequential linear sensor"), NULL}}, |
| { EXIF_TAG_ORIENTATION, |
| { "", N_("Top-left"), N_("Top-right"), N_("Bottom-right"), |
| N_("Bottom-left"), N_("Left-top"), N_("Right-top"), |
| N_("Right-bottom"), N_("Left-bottom"), NULL}}, |
| { EXIF_TAG_YCBCR_POSITIONING, |
| { "", N_("Centered"), N_("Co-sited"), NULL}}, |
| { EXIF_TAG_PHOTOMETRIC_INTERPRETATION, |
| { N_("Reversed mono"), N_("Normal mono"), N_("RGB"), N_("Palette"), "", |
| N_("CMYK"), N_("YCbCr"), "", N_("CieLAB"), NULL}}, |
| { EXIF_TAG_CUSTOM_RENDERED, |
| { N_("Normal process"), N_("Custom process"), NULL}}, |
| { EXIF_TAG_EXPOSURE_MODE, |
| { N_("Auto exposure"), N_("Manual exposure"), N_("Auto bracket"), NULL}}, |
| { EXIF_TAG_WHITE_BALANCE, |
| { N_("Auto white balance"), N_("Manual white balance"), NULL}}, |
| { EXIF_TAG_SCENE_CAPTURE_TYPE, |
| { N_("Standard"), N_("Landscape"), N_("Portrait"), |
| N_("Night scene"), NULL}}, |
| { EXIF_TAG_GAIN_CONTROL, |
| { N_("Normal"), N_("Low gain up"), N_("High gain up"), |
| N_("Low gain down"), N_("High gain down"), NULL}}, |
| { EXIF_TAG_SATURATION, |
| { N_("Normal"), N_("Low saturation"), N_("High saturation"), NULL}}, |
| { EXIF_TAG_CONTRAST , {N_("Normal"), N_("Soft"), N_("Hard"), NULL}}, |
| { EXIF_TAG_SHARPNESS, {N_("Normal"), N_("Soft"), N_("Hard"), NULL}}, |
| #endif |
| { 0, {NULL}} |
| }; |
| |
| static const struct { |
| ExifTag tag; |
| struct { |
| int index; |
| const char *values[4]; /*!< list of progressively shorter string |
| descriptions; the longest one that fits will be |
| selected */ |
| } elem[25]; |
| } list2[] = { |
| #ifndef NO_VERBOSE_TAG_DATA |
| { EXIF_TAG_METERING_MODE, |
| { { 0, {N_("Unknown"), NULL}}, |
| { 1, {N_("Average"), N_("Avg"), NULL}}, |
| { 2, {N_("Center-weighted average"), N_("Center-weight"), NULL}}, |
| { 3, {N_("Spot"), NULL}}, |
| { 4, {N_("Multi spot"), NULL}}, |
| { 5, {N_("Pattern"), NULL}}, |
| { 6, {N_("Partial"), NULL}}, |
| {255, {N_("Other"), NULL}}, |
| { 0, {NULL}}}}, |
| { EXIF_TAG_COMPRESSION, |
| { {1, {N_("Uncompressed"), NULL}}, |
| {5, {N_("LZW compression"), NULL}}, |
| {6, {N_("JPEG compression"), NULL}}, |
| {7, {N_("JPEG compression"), NULL}}, |
| {8, {N_("Deflate/ZIP compression"), NULL}}, |
| {32773, {N_("PackBits compression"), NULL}}, |
| {0, {NULL}}}}, |
| { EXIF_TAG_LIGHT_SOURCE, |
| { { 0, {N_("Unknown"), NULL}}, |
| { 1, {N_("Daylight"), NULL}}, |
| { 2, {N_("Fluorescent"), NULL}}, |
| { 3, {N_("Tungsten incandescent light"), N_("Tungsten"), NULL}}, |
| { 4, {N_("Flash"), NULL}}, |
| { 9, {N_("Fine weather"), NULL}}, |
| { 10, {N_("Cloudy weather"), N_("Cloudy"), NULL}}, |
| { 11, {N_("Shade"), NULL}}, |
| { 12, {N_("Daylight fluorescent"), NULL}}, |
| { 13, {N_("Day white fluorescent"), NULL}}, |
| { 14, {N_("Cool white fluorescent"), NULL}}, |
| { 15, {N_("White fluorescent"), NULL}}, |
| { 17, {N_("Standard light A"), NULL}}, |
| { 18, {N_("Standard light B"), NULL}}, |
| { 19, {N_("Standard light C"), NULL}}, |
| { 20, {N_("D55"), NULL}}, |
| { 21, {N_("D65"), NULL}}, |
| { 22, {N_("D75"), NULL}}, |
| { 24, {N_("ISO studio tungsten"),NULL}}, |
| {255, {N_("Other"), NULL}}, |
| { 0, {NULL}}}}, |
| { EXIF_TAG_FOCAL_PLANE_RESOLUTION_UNIT, |
| { {2, {N_("Inch"), N_("in"), NULL}}, |
| {3, {N_("Centimeter"), N_("cm"), NULL}}, |
| {0, {NULL}}}}, |
| { EXIF_TAG_RESOLUTION_UNIT, |
| { {2, {N_("Inch"), N_("in"), NULL}}, |
| {3, {N_("Centimeter"), N_("cm"), NULL}}, |
| {0, {NULL}}}}, |
| { EXIF_TAG_EXPOSURE_PROGRAM, |
| { {0, {N_("Not defined"), NULL}}, |
| {1, {N_("Manual"), NULL}}, |
| {2, {N_("Normal program"), N_("Normal"), NULL}}, |
| {3, {N_("Aperture priority"), N_("Aperture"), NULL}}, |
| {4, {N_("Shutter priority"),N_("Shutter"), NULL}}, |
| {5, {N_("Creative program (biased toward depth of field)"), |
| N_("Creative"), NULL}}, |
| {6, {N_("Creative program (biased toward fast shutter speed)"), |
| N_("Action"), NULL}}, |
| {7, {N_("Portrait mode (for closeup photos with the background out " |
| "of focus)"), N_("Portrait"), NULL}}, |
| {8, {N_("Landscape mode (for landscape photos with the background " |
| "in focus)"), N_("Landscape"), NULL}}, |
| {0, {NULL}}}}, |
| { EXIF_TAG_FLASH, |
| { {0x0000, {N_("Flash did not fire"), N_("No flash"), NULL}}, |
| {0x0001, {N_("Flash fired"), N_("Flash"), N_("Yes"), NULL}}, |
| {0x0005, {N_("Strobe return light not detected"), N_("Without strobe"), |
| NULL}}, |
| {0x0007, {N_("Strobe return light detected"), N_("With strobe"), NULL}}, |
| {0x0008, {N_("Flash did not fire"), NULL}}, /* Olympus E-330 */ |
| {0x0009, {N_("Flash fired, compulsory flash mode"), NULL}}, |
| {0x000d, {N_("Flash fired, compulsory flash mode, return light " |
| "not detected"), NULL}}, |
| {0x000f, {N_("Flash fired, compulsory flash mode, return light " |
| "detected"), NULL}}, |
| {0x0010, {N_("Flash did not fire, compulsory flash mode"), NULL}}, |
| {0x0018, {N_("Flash did not fire, auto mode"), NULL}}, |
| {0x0019, {N_("Flash fired, auto mode"), NULL}}, |
| {0x001d, {N_("Flash fired, auto mode, return light not detected"), |
| NULL}}, |
| {0x001f, {N_("Flash fired, auto mode, return light detected"), NULL}}, |
| {0x0020, {N_("No flash function"),NULL}}, |
| {0x0041, {N_("Flash fired, red-eye reduction mode"), NULL}}, |
| {0x0045, {N_("Flash fired, red-eye reduction mode, return light " |
| "not detected"), NULL}}, |
| {0x0047, {N_("Flash fired, red-eye reduction mode, return light " |
| "detected"), NULL}}, |
| {0x0049, {N_("Flash fired, compulsory flash mode, red-eye reduction " |
| "mode"), NULL}}, |
| {0x004d, {N_("Flash fired, compulsory flash mode, red-eye reduction " |
| "mode, return light not detected"), NULL}}, |
| {0x004f, {N_("Flash fired, compulsory flash mode, red-eye reduction mode, " |
| "return light detected"), NULL}}, |
| {0x0058, {N_("Flash did not fire, auto mode, red-eye reduction mode"), NULL}}, |
| {0x0059, {N_("Flash fired, auto mode, red-eye reduction mode"), NULL}}, |
| {0x005d, {N_("Flash fired, auto mode, return light not detected, " |
| "red-eye reduction mode"), NULL}}, |
| {0x005f, {N_("Flash fired, auto mode, return light detected, " |
| "red-eye reduction mode"), NULL}}, |
| {0x0000, {NULL}}}}, |
| { EXIF_TAG_SUBJECT_DISTANCE_RANGE, |
| { {0, {N_("Unknown"), N_("?"), NULL}}, |
| {1, {N_("Macro"), NULL}}, |
| {2, {N_("Close view"), N_("Close"), NULL}}, |
| {3, {N_("Distant view"), N_("Distant"), NULL}}, |
| {0, {NULL}}}}, |
| { EXIF_TAG_COLOR_SPACE, |
| { {1, {N_("sRGB"), NULL}}, |
| {2, {N_("Adobe RGB"), NULL}}, |
| {0xffff, {N_("Uncalibrated"), NULL}}, |
| {0x0000, {NULL}}}}, |
| #endif |
| {0, { { 0, {NULL}}} } |
| }; |
| |
| const char * |
| exif_entry_get_value (ExifEntry *e, char *val, unsigned int maxlen) |
| { |
| unsigned int i, j, k; |
| ExifShort v_short, v_short2, v_short3, v_short4; |
| ExifByte v_byte; |
| ExifRational v_rat; |
| ExifSRational v_srat; |
| char b[64]; |
| const char *c; |
| ExifByteOrder o; |
| double d; |
| ExifEntry *entry; |
| static const struct { |
| char label[5]; |
| char major, minor; |
| } versions[] = { |
| {"0110", 1, 1}, |
| {"0120", 1, 2}, |
| {"0200", 2, 0}, |
| {"0210", 2, 1}, |
| {"0220", 2, 2}, |
| {"0221", 2, 21}, |
| {"0230", 2, 3}, |
| {"" , 0, 0} |
| }; |
| |
| /* FIXME: This belongs to somewhere else. */ |
| /* libexif should use the default system locale. |
| * If an application specifically requires UTF-8, then we |
| * must give the application a way to tell libexif that. |
| * |
| * bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8"); |
| */ |
| bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR); |
| |
| if (!e || !e->parent || !e->parent->parent || !maxlen) |
| return val; |
| |
| /* make sure the returned string is zero terminated */ |
| memset (val, 0, maxlen); |
| maxlen--; |
| memset (b, 0, sizeof (b)); |
| |
| /* We need the byte order */ |
| o = exif_data_get_byte_order (e->parent->parent); |
| |
| /* Sanity check */ |
| if (e->size != e->components * exif_format_get_size (e->format)) { |
| snprintf (val, maxlen, _("Invalid size of entry (%i, " |
| "expected %li x %i)."), e->size, e->components, |
| exif_format_get_size (e->format)); |
| return val; |
| } |
| |
| switch (e->tag) { |
| case EXIF_TAG_USER_COMMENT: |
| |
| /* |
| * The specification says UNDEFINED, but some |
| * manufacturers don't care and use ASCII. If this is the |
| * case here, only refuse to read it if there is no chance |
| * of finding readable data. |
| */ |
| if ((e->format != EXIF_FORMAT_ASCII) || |
| (e->size <= 8) || |
| ( memcmp (e->data, "ASCII\0\0\0" , 8) && |
| memcmp (e->data, "UNICODE\0" , 8) && |
| memcmp (e->data, "JIS\0\0\0\0\0", 8) && |
| memcmp (e->data, "\0\0\0\0\0\0\0\0", 8))) |
| CF (e, EXIF_FORMAT_UNDEFINED, val, maxlen); |
| |
| /* |
| * Note that, according to the specification (V2.1, p 40), |
| * the user comment field does not have to be |
| * NULL terminated. |
| */ |
| if ((e->size >= 8) && !memcmp (e->data, "ASCII\0\0\0", 8)) { |
| strncpy (val, (char *) e->data + 8, MIN (e->size - 8, maxlen)); |
| break; |
| } |
| if ((e->size >= 8) && !memcmp (e->data, "UNICODE\0", 8)) { |
| strncpy (val, _("Unsupported UNICODE string"), maxlen); |
| /* FIXME: use iconv to convert into the locale encoding. |
| * EXIF 2.2 implies (but does not say) that this encoding is |
| * UCS-2. |
| */ |
| break; |
| } |
| if ((e->size >= 8) && !memcmp (e->data, "JIS\0\0\0\0\0", 8)) { |
| strncpy (val, _("Unsupported JIS string"), maxlen); |
| /* FIXME: use iconv to convert into the locale encoding */ |
| break; |
| } |
| |
| /* Check if there is really some information in the tag. */ |
| for (i = 0; (i < e->size) && |
| (!e->data[i] || (e->data[i] == ' ')); i++); |
| if (i == e->size) break; |
| |
| /* |
| * If we reach this point, the tag does not |
| * comply with the standard but seems to contain data. |
| * Print as much as possible. |
| */ |
| exif_entry_log (e, EXIF_LOG_CODE_DEBUG, |
| _("Tag UserComment contains data but is " |
| "against specification.")); |
| for (j = 0; (i < e->size) && (j < maxlen); i++, j++) { |
| exif_entry_log (e, EXIF_LOG_CODE_DEBUG, |
| _("Byte at position %i: 0x%02x"), i, e->data[i]); |
| val[j] = isprint (e->data[i]) ? e->data[i] : '.'; |
| } |
| break; |
| |
| case EXIF_TAG_EXIF_VERSION: |
| CF (e, EXIF_FORMAT_UNDEFINED, val, maxlen); |
| CC (e, 4, val, maxlen); |
| strncpy (val, _("Unknown Exif Version"), maxlen); |
| for (i = 0; *versions[i].label; i++) { |
| if (!memcmp (e->data, versions[i].label, 4)) { |
| snprintf (val, maxlen, |
| _("Exif Version %d.%d"), |
| versions[i].major, |
| versions[i].minor); |
| break; |
| } |
| } |
| break; |
| case EXIF_TAG_FLASH_PIX_VERSION: |
| CF (e, EXIF_FORMAT_UNDEFINED, val, maxlen); |
| CC (e, 4, val, maxlen); |
| if (!memcmp (e->data, "0100", 4)) |
| strncpy (val, _("FlashPix Version 1.0"), maxlen); |
| else if (!memcmp (e->data, "0101", 4)) |
| strncpy (val, _("FlashPix Version 1.01"), maxlen); |
| else |
| strncpy (val, _("Unknown FlashPix Version"), maxlen); |
| break; |
| case EXIF_TAG_COPYRIGHT: |
| CF (e, EXIF_FORMAT_ASCII, val, maxlen); |
| |
| /* |
| * First part: Photographer. |
| * Some cameras store a string like " " here. Ignore it. |
| * Remember that a corrupted tag might not be NUL-terminated |
| */ |
| if (e->size && e->data && match_repeated_char(e->data, ' ', e->size)) |
| strncpy (val, (char *) e->data, MIN (maxlen, e->size)); |
| else |
| strncpy (val, _("[None]"), maxlen); |
| strncat (val, " ", maxlen - strlen (val)); |
| strncat (val, _("(Photographer)"), maxlen - strlen (val)); |
| |
| /* Second part: Editor. */ |
| strncat (val, " - ", maxlen - strlen (val)); |
| k = 0; |
| if (e->size && e->data) { |
| const unsigned char *tagdata = memchr(e->data, 0, e->size); |
| if (tagdata++) { |
| int editor_ofs = tagdata - e->data; |
| int remaining = e->size - editor_ofs; |
| if (match_repeated_char(tagdata, ' ', remaining)) { |
| strncat (val, (const char*)tagdata, MIN (maxlen - strlen (val), (size_t)remaining)); |
| ++k; |
| } |
| } |
| } |
| if (!k) |
| strncat (val, _("[None]"), maxlen - strlen (val)); |
| strncat (val, " ", maxlen - strlen (val)); |
| strncat (val, _("(Editor)"), maxlen - strlen (val)); |
| |
| break; |
| case EXIF_TAG_FNUMBER: |
| CF (e, EXIF_FORMAT_RATIONAL, val, maxlen); |
| CC (e, 1, val, maxlen); |
| v_rat = exif_get_rational (e->data, o); |
| if (!v_rat.denominator) { |
| exif_entry_format_value(e, val, maxlen); |
| break; |
| } |
| d = (double) v_rat.numerator / (double) v_rat.denominator; |
| snprintf (val, maxlen, "f/%.01f", d); |
| break; |
| case EXIF_TAG_APERTURE_VALUE: |
| case EXIF_TAG_MAX_APERTURE_VALUE: |
| CF (e, EXIF_FORMAT_RATIONAL, val, maxlen); |
| CC (e, 1, val, maxlen); |
| v_rat = exif_get_rational (e->data, o); |
| if (!v_rat.denominator || (0x80000000 == v_rat.numerator)) { |
| exif_entry_format_value(e, val, maxlen); |
| break; |
| } |
| d = (double) v_rat.numerator / (double) v_rat.denominator; |
| snprintf (val, maxlen, _("%.02f EV"), d); |
| snprintf (b, sizeof (b), _(" (f/%.01f)"), pow (2, d / 2.)); |
| if (maxlen > strlen (val) + strlen (b)) |
| strncat (val, b, maxlen - strlen (val)); |
| break; |
| case EXIF_TAG_FOCAL_LENGTH: |
| CF (e, EXIF_FORMAT_RATIONAL, val, maxlen); |
| CC (e, 1, val, maxlen); |
| v_rat = exif_get_rational (e->data, o); |
| if (!v_rat.denominator) { |
| exif_entry_format_value(e, val, maxlen); |
| break; |
| } |
| |
| /* |
| * For calculation of the 35mm equivalent, |
| * Minolta cameras need a multiplier that depends on the |
| * camera model. |
| */ |
| d = 0.; |
| entry = exif_content_get_entry ( |
| e->parent->parent->ifd[EXIF_IFD_0], EXIF_TAG_MAKE); |
| if (entry && entry->data && (entry->size > 7) && |
| !strncmp ((char *)entry->data, "Minolta", 7)) { |
| entry = exif_content_get_entry ( |
| e->parent->parent->ifd[EXIF_IFD_0], |
| EXIF_TAG_MODEL); |
| if (entry && entry->data && (entry->size > 8)) { |
| if (!strncmp ((char *)entry->data, "DiMAGE 7", 8)) |
| d = 3.9; |
| else if (!strncmp ((char *)entry->data, "DiMAGE 5", 8)) |
| d = 4.9; |
| } |
| } |
| if (d) |
| snprintf (b, sizeof (b), _(" (35 equivalent: %d mm)"), |
| (int) (d * (double) v_rat.numerator / |
| (double) v_rat.denominator)); |
| |
| d = (double) v_rat.numerator / (double) v_rat.denominator; |
| snprintf (val, maxlen, "%.1f mm", d); |
| if (maxlen > strlen (val) + strlen (b)) |
| strncat (val, b, maxlen - strlen (val)); |
| break; |
| case EXIF_TAG_SUBJECT_DISTANCE: |
| CF (e, EXIF_FORMAT_RATIONAL, val, maxlen); |
| CC (e, 1, val, maxlen); |
| v_rat = exif_get_rational (e->data, o); |
| if (!v_rat.denominator) { |
| exif_entry_format_value(e, val, maxlen); |
| break; |
| } |
| d = (double) v_rat.numerator / (double) v_rat.denominator; |
| snprintf (val, maxlen, "%.1f m", d); |
| break; |
| case EXIF_TAG_EXPOSURE_TIME: |
| CF (e, EXIF_FORMAT_RATIONAL, val, maxlen); |
| CC (e, 1, val, maxlen); |
| v_rat = exif_get_rational (e->data, o); |
| if (!v_rat.denominator) { |
| exif_entry_format_value(e, val, maxlen); |
| break; |
| } |
| d = (double) v_rat.numerator / (double) v_rat.denominator; |
| if (d < 1) |
| snprintf (val, maxlen, _("1/%i"), (int) (0.5 + 1. / d)); |
| else |
| snprintf (val, maxlen, "%i", (int) d); |
| if (maxlen > strlen (val) + strlen (_(" sec."))) |
| strncat (val, _(" sec."), maxlen - strlen (val)); |
| break; |
| case EXIF_TAG_SHUTTER_SPEED_VALUE: |
| CF (e, EXIF_FORMAT_SRATIONAL, val, maxlen); |
| CC (e, 1, val, maxlen); |
| v_srat = exif_get_srational (e->data, o); |
| if (!v_srat.denominator) { |
| exif_entry_format_value(e, val, maxlen); |
| break; |
| } |
| d = (double) v_srat.numerator / (double) v_srat.denominator; |
| snprintf (val, maxlen, _("%.02f EV"), d); |
| d = 1. / pow (2, d); |
| if (d < 1) |
| snprintf (b, sizeof (b), _(" (1/%d sec.)"), (int) (1. / d)); |
| else |
| snprintf (b, sizeof (b), _(" (%d sec.)"), (int) d); |
| strncat (val, b, maxlen - strlen (val)); |
| break; |
| case EXIF_TAG_BRIGHTNESS_VALUE: |
| CF (e, EXIF_FORMAT_SRATIONAL, val, maxlen); |
| CC (e, 1, val, maxlen); |
| v_srat = exif_get_srational (e->data, o); |
| if (!v_srat.denominator) { |
| exif_entry_format_value(e, val, maxlen); |
| break; |
| } |
| d = (double) v_srat.numerator / (double) v_srat.denominator; |
| snprintf (val, maxlen, _("%.02f EV"), d); |
| snprintf (b, sizeof (b), _(" (%.02f cd/m^2)"), |
| 1. / (M_PI * 0.3048 * 0.3048) * pow (2, d)); |
| if (maxlen > strlen (val) + strlen (b)) |
| strncat (val, b, maxlen - strlen (val)); |
| break; |
| case EXIF_TAG_FILE_SOURCE: |
| CF (e, EXIF_FORMAT_UNDEFINED, val, maxlen); |
| CC (e, 1, val, maxlen); |
| v_byte = e->data[0]; |
| if (v_byte == 3) |
| strncpy (val, _("DSC"), maxlen); |
| else |
| snprintf (val, maxlen, _("Internal error (unknown " |
| "value %i)"), v_byte); |
| break; |
| case EXIF_TAG_COMPONENTS_CONFIGURATION: |
| CF (e, EXIF_FORMAT_UNDEFINED, val, maxlen); |
| CC (e, 4, val, maxlen); |
| for (i = 0; i < 4; i++) { |
| switch (e->data[i]) { |
| case 0: c = _("-"); break; |
| case 1: c = _("Y"); break; |
| case 2: c = _("Cb"); break; |
| case 3: c = _("Cr"); break; |
| case 4: c = _("R"); break; |
| case 5: c = _("G"); break; |
| case 6: c = _("B"); break; |
| default: c = _("Reserved"); break; |
| } |
| strncat (val, c, maxlen - strlen (val)); |
| if (i < 3) |
| strncat (val, " ", maxlen - strlen (val)); |
| } |
| break; |
| case EXIF_TAG_EXPOSURE_BIAS_VALUE: |
| CF (e, EXIF_FORMAT_SRATIONAL, val, maxlen); |
| CC (e, 1, val, maxlen); |
| v_srat = exif_get_srational (e->data, o); |
| if (!v_srat.denominator) { |
| exif_entry_format_value(e, val, maxlen); |
| break; |
| } |
| d = (double) v_srat.numerator / (double) v_srat.denominator; |
| snprintf (val, maxlen, _("%.02f EV"), d); |
| break; |
| case EXIF_TAG_SCENE_TYPE: |
| CF (e, EXIF_FORMAT_UNDEFINED, val, maxlen); |
| CC (e, 1, val, maxlen); |
| v_byte = e->data[0]; |
| if (v_byte == 1) |
| strncpy (val, _("Directly photographed"), maxlen); |
| else |
| snprintf (val, maxlen, _("Internal error (unknown " |
| "value %i)"), v_byte); |
| break; |
| case EXIF_TAG_YCBCR_SUB_SAMPLING: |
| CF (e, EXIF_FORMAT_SHORT, val, maxlen); |
| CC (e, 2, val, maxlen); |
| v_short = exif_get_short (e->data, o); |
| v_short2 = exif_get_short ( |
| e->data + exif_format_get_size (e->format), |
| o); |
| if ((v_short == 2) && (v_short2 == 1)) |
| strncpy (val, _("YCbCr4:2:2"), maxlen); |
| else if ((v_short == 2) && (v_short2 == 2)) |
| strncpy (val, _("YCbCr4:2:0"), maxlen); |
| else |
| snprintf (val, maxlen, "%u, %u", v_short, v_short2); |
| break; |
| case EXIF_TAG_SUBJECT_AREA: |
| CF (e, EXIF_FORMAT_SHORT, val, maxlen); |
| switch (e->components) { |
| case 2: |
| v_short = exif_get_short (e->data, o); |
| v_short2 = exif_get_short (e->data + 2, o); |
| snprintf (val, maxlen, "(x,y) = (%i,%i)", |
| v_short, v_short2); |
| break; |
| case 3: |
| v_short = exif_get_short (e->data, o); |
| v_short2 = exif_get_short (e->data + 2, o); |
| v_short3 = exif_get_short (e->data + 4, o); |
| snprintf (val, maxlen, _("Within distance %i of " |
| "(x,y) = (%i,%i)"), v_short3, v_short, |
| v_short2); |
| break; |
| case 4: |
| v_short = exif_get_short (e->data, o); |
| v_short2 = exif_get_short (e->data + 2, o); |
| v_short3 = exif_get_short (e->data + 4, o); |
| v_short4 = exif_get_short (e->data + 6, o); |
| snprintf (val, maxlen, _("Within rectangle " |
| "(width %i, height %i) around " |
| "(x,y) = (%i,%i)"), v_short3, v_short4, |
| v_short, v_short2); |
| break; |
| default: |
| snprintf (val, maxlen, _("Unexpected number " |
| "of components (%li, expected 2, 3, or 4)."), |
| e->components); |
| } |
| break; |
| case EXIF_TAG_GPS_VERSION_ID: |
| /* This is only valid in the GPS IFD */ |
| CF (e, EXIF_FORMAT_BYTE, val, maxlen); |
| CC (e, 4, val, maxlen); |
| v_byte = e->data[0]; |
| snprintf (val, maxlen, "%u", v_byte); |
| maxlen -= strlen (val); |
| for (i = 1; i < e->components; i++) { |
| v_byte = e->data[i]; |
| snprintf (b, sizeof (b), ".%u", v_byte); |
| strncat (val, b, maxlen); |
| maxlen -= strlen (b); |
| if ((signed)maxlen <= 0) break; |
| } |
| break; |
| case EXIF_TAG_INTEROPERABILITY_VERSION: |
| /* a.k.a. case EXIF_TAG_GPS_LATITUDE: */ |
| /* This tag occurs in EXIF_IFD_INTEROPERABILITY */ |
| if (e->format == EXIF_FORMAT_UNDEFINED) { |
| strncpy (val, (char *) e->data, MIN (maxlen, e->size)); |
| break; |
| } |
| /* EXIF_TAG_GPS_LATITUDE is the same numerically as |
| * EXIF_TAG_INTEROPERABILITY_VERSION but in EXIF_IFD_GPS |
| */ |
| exif_entry_format_value(e, val, maxlen); |
| break; |
| case EXIF_TAG_GPS_ALTITUDE_REF: |
| /* This is only valid in the GPS IFD */ |
| CF (e, EXIF_FORMAT_BYTE, val, maxlen); |
| CC (e, 1, val, maxlen); |
| v_byte = e->data[0]; |
| if (v_byte == 0) |
| strncpy (val, _("Sea level"), maxlen); |
| else if (v_byte == 1) |
| strncpy (val, _("Sea level reference"), maxlen); |
| else |
| snprintf (val, maxlen, _("Internal error (unknown " |
| "value %i)"), v_byte); |
| break; |
| case EXIF_TAG_GPS_TIME_STAMP: |
| /* This is only valid in the GPS IFD */ |
| CF (e, EXIF_FORMAT_RATIONAL, val, maxlen); |
| CC (e, 3, val, maxlen); |
| |
| v_rat = exif_get_rational (e->data, o); |
| if (!v_rat.denominator) { |
| exif_entry_format_value(e, val, maxlen); |
| break; |
| } |
| i = v_rat.numerator / v_rat.denominator; |
| |
| v_rat = exif_get_rational (e->data + |
| exif_format_get_size (e->format), |
| o); |
| if (!v_rat.denominator) { |
| exif_entry_format_value(e, val, maxlen); |
| break; |
| } |
| j = v_rat.numerator / v_rat.denominator; |
| |
| v_rat = exif_get_rational (e->data + |
| 2*exif_format_get_size (e->format), |
| o); |
| if (!v_rat.denominator) { |
| exif_entry_format_value(e, val, maxlen); |
| break; |
| } |
| d = (double) v_rat.numerator / (double) v_rat.denominator; |
| snprintf (val, maxlen, "%02u:%02u:%05.2f", i, j, d); |
| break; |
| |
| case EXIF_TAG_METERING_MODE: |
| case EXIF_TAG_COMPRESSION: |
| case EXIF_TAG_LIGHT_SOURCE: |
| case EXIF_TAG_FOCAL_PLANE_RESOLUTION_UNIT: |
| case EXIF_TAG_RESOLUTION_UNIT: |
| case EXIF_TAG_EXPOSURE_PROGRAM: |
| case EXIF_TAG_FLASH: |
| case EXIF_TAG_SUBJECT_DISTANCE_RANGE: |
| case EXIF_TAG_COLOR_SPACE: |
| CF (e,EXIF_FORMAT_SHORT, val, maxlen); |
| CC (e, 1, val, maxlen); |
| v_short = exif_get_short (e->data, o); |
| |
| /* Search the tag */ |
| for (i = 0; list2[i].tag && (list2[i].tag != e->tag); i++); |
| if (!list2[i].tag) { |
| snprintf (val, maxlen, _("Internal error (unknown " |
| "value %i)"), v_short); |
| break; |
| } |
| |
| /* Find the value */ |
| for (j = 0; list2[i].elem[j].values[0] && |
| (list2[i].elem[j].index < v_short); j++); |
| if (list2[i].elem[j].index != v_short) { |
| snprintf (val, maxlen, _("Internal error (unknown " |
| "value %i)"), v_short); |
| break; |
| } |
| |
| /* Find a short enough value */ |
| memset (val, 0, maxlen); |
| for (k = 0; list2[i].elem[j].values[k]; k++) { |
| size_t l = strlen (_(list2[i].elem[j].values[k])); |
| if ((maxlen > l) && (strlen (val) < l)) |
| strncpy (val, _(list2[i].elem[j].values[k]), maxlen); |
| } |
| if (!val[0]) snprintf (val, maxlen, "%i", v_short); |
| |
| break; |
| |
| case EXIF_TAG_PLANAR_CONFIGURATION: |
| case EXIF_TAG_SENSING_METHOD: |
| case EXIF_TAG_ORIENTATION: |
| case EXIF_TAG_YCBCR_POSITIONING: |
| case EXIF_TAG_PHOTOMETRIC_INTERPRETATION: |
| case EXIF_TAG_CUSTOM_RENDERED: |
| case EXIF_TAG_EXPOSURE_MODE: |
| case EXIF_TAG_WHITE_BALANCE: |
| case EXIF_TAG_SCENE_CAPTURE_TYPE: |
| case EXIF_TAG_GAIN_CONTROL: |
| case EXIF_TAG_SATURATION: |
| case EXIF_TAG_CONTRAST: |
| case EXIF_TAG_SHARPNESS: |
| CF (e, EXIF_FORMAT_SHORT, val, maxlen); |
| CC (e, 1, val, maxlen); |
| v_short = exif_get_short (e->data, o); |
| |
| /* Search the tag */ |
| for (i = 0; list[i].tag && (list[i].tag != e->tag); i++); |
| if (!list[i].tag) { |
| snprintf (val, maxlen, _("Internal error (unknown " |
| "value %i)"), v_short); |
| break; |
| } |
| |
| /* Find the value */ |
| for (j = 0; list[i].strings[j] && (j < v_short); j++); |
| if (!list[i].strings[j]) |
| snprintf (val, maxlen, "%i", v_short); |
| else if (!*list[i].strings[j]) |
| snprintf (val, maxlen, _("Unknown value %i"), v_short); |
| else |
| strncpy (val, _(list[i].strings[j]), maxlen); |
| break; |
| |
| case EXIF_TAG_XP_TITLE: |
| case EXIF_TAG_XP_COMMENT: |
| case EXIF_TAG_XP_AUTHOR: |
| case EXIF_TAG_XP_KEYWORDS: |
| case EXIF_TAG_XP_SUBJECT: |
| { |
| /* Sanity check the size to prevent overflow */ |
| if (e->size > UINT_MAX - sizeof(unsigned short)) { |
| snprintf (val, maxlen, "Value overflow in EXIF_TAG_XP_SUBJECT"); |
| break; |
| } |
| |
| /* The tag may not be U+0000-terminated , so make a local |
| U+0000-terminated copy before converting it */ |
| unsigned short *utf16 = exif_mem_alloc (e->priv->mem, e->size+sizeof(unsigned short)); |
| if (!utf16) break; |
| memcpy(utf16, e->data, e->size); |
| utf16[e->size/sizeof(unsigned short)] = 0; |
| |
| /* Warning! The texts are converted from UTF16 to UTF8 */ |
| /* FIXME: use iconv to convert into the locale encoding */ |
| exif_convert_utf16_to_utf8(val, utf16, maxlen); |
| exif_mem_free(e->priv->mem, utf16); |
| break; |
| } |
| |
| default: |
| /* Use a generic value formatting */ |
| exif_entry_format_value(e, val, maxlen); |
| } |
| |
| return val; |
| } |
| |
| |
| /*! |
| * \bug Log and report failed exif_mem_malloc() calls. |
| */ |
| void |
| exif_entry_initialize (ExifEntry *e, ExifTag tag) |
| { |
| ExifRational r; |
| ExifByteOrder o; |
| |
| /* We need the byte order */ |
| if (!e || !e->parent || e->data || !e->parent->parent) |
| return; |
| o = exif_data_get_byte_order (e->parent->parent); |
| |
| e->tag = tag; |
| switch (tag) { |
| |
| /* LONG, 1 component, no default */ |
| case EXIF_TAG_PIXEL_X_DIMENSION: |
| case EXIF_TAG_PIXEL_Y_DIMENSION: |
| case EXIF_TAG_EXIF_IFD_POINTER: |
| case EXIF_TAG_GPS_INFO_IFD_POINTER: |
| case EXIF_TAG_INTEROPERABILITY_IFD_POINTER: |
| case EXIF_TAG_JPEG_INTERCHANGE_FORMAT_LENGTH: |
| case EXIF_TAG_JPEG_INTERCHANGE_FORMAT: |
| e->components = 1; |
| e->format = EXIF_FORMAT_LONG; |
| e->size = exif_format_get_size (e->format) * e->components; |
| e->data = exif_entry_alloc (e, e->size); |
| if (!e->data) break; |
| break; |
| |
| /* SHORT, 1 component, no default */ |
| case EXIF_TAG_SUBJECT_LOCATION: |
| case EXIF_TAG_SENSING_METHOD: |
| case EXIF_TAG_PHOTOMETRIC_INTERPRETATION: |
| case EXIF_TAG_COMPRESSION: |
| case EXIF_TAG_EXPOSURE_MODE: |
| case EXIF_TAG_WHITE_BALANCE: |
| case EXIF_TAG_FOCAL_LENGTH_IN_35MM_FILM: |
| case EXIF_TAG_GAIN_CONTROL: |
| case EXIF_TAG_SUBJECT_DISTANCE_RANGE: |
| case EXIF_TAG_FLASH: |
| case EXIF_TAG_ISO_SPEED_RATINGS: |
| |
| /* SHORT, 1 component, default 0 */ |
| case EXIF_TAG_IMAGE_WIDTH: |
| case EXIF_TAG_IMAGE_LENGTH: |
| case EXIF_TAG_EXPOSURE_PROGRAM: |
| case EXIF_TAG_LIGHT_SOURCE: |
| case EXIF_TAG_METERING_MODE: |
| case EXIF_TAG_CUSTOM_RENDERED: |
| case EXIF_TAG_SCENE_CAPTURE_TYPE: |
| case EXIF_TAG_CONTRAST: |
| case EXIF_TAG_SATURATION: |
| case EXIF_TAG_SHARPNESS: |
| e->components = 1; |
| e->format = EXIF_FORMAT_SHORT; |
| e->size = exif_format_get_size (e->format) * e->components; |
| e->data = exif_entry_alloc (e, e->size); |
| if (!e->data) break; |
| exif_set_short (e->data, o, 0); |
| break; |
| |
| /* SHORT, 1 component, default 1 */ |
| case EXIF_TAG_ORIENTATION: |
| case EXIF_TAG_PLANAR_CONFIGURATION: |
| case EXIF_TAG_YCBCR_POSITIONING: |
| e->components = 1; |
| e->format = EXIF_FORMAT_SHORT; |
| e->size = exif_format_get_size (e->format) * e->components; |
| e->data = exif_entry_alloc (e, e->size); |
| if (!e->data) break; |
| exif_set_short (e->data, o, 1); |
| break; |
| |
| /* SHORT, 1 component, default 2 */ |
| case EXIF_TAG_RESOLUTION_UNIT: |
| case EXIF_TAG_FOCAL_PLANE_RESOLUTION_UNIT: |
| e->components = 1; |
| e->format = EXIF_FORMAT_SHORT; |
| e->size = exif_format_get_size (e->format) * e->components; |
| e->data = exif_entry_alloc (e, e->size); |
| if (!e->data) break; |
| exif_set_short (e->data, o, 2); |
| break; |
| |
| /* SHORT, 1 component, default 3 */ |
| case EXIF_TAG_SAMPLES_PER_PIXEL: |
| e->components = 1; |
| e->format = EXIF_FORMAT_SHORT; |
| e->size = exif_format_get_size (e->format) * e->components; |
| e->data = exif_entry_alloc (e, e->size); |
| if (!e->data) break; |
| exif_set_short (e->data, o, 3); |
| break; |
| |
| /* SHORT, 1 component, default 0xffff */ |
| case EXIF_TAG_COLOR_SPACE: |
| e->components = 1; |
| e->format = EXIF_FORMAT_SHORT; |
| e->size = exif_format_get_size (e->format) * e->components; |
| e->data = exif_entry_alloc (e, e->size); |
| if (!e->data) break; |
| exif_set_short (e->data, o, 0xffff); |
| break; |
| |
| /* SHORT, 3 components, default 8 8 8 */ |
| case EXIF_TAG_BITS_PER_SAMPLE: |
| e->components = 3; |
| e->format = EXIF_FORMAT_SHORT; |
| e->size = exif_format_get_size (e->format) * e->components; |
| e->data = exif_entry_alloc (e, e->size); |
| if (!e->data) break; |
| exif_set_short (e->data, o, 8); |
| exif_set_short ( |
| e->data + exif_format_get_size (e->format), |
| o, 8); |
| exif_set_short ( |
| e->data + 2 * exif_format_get_size (e->format), |
| o, 8); |
| break; |
| |
| /* SHORT, 2 components, default 2 1 */ |
| case EXIF_TAG_YCBCR_SUB_SAMPLING: |
| e->components = 2; |
| e->format = EXIF_FORMAT_SHORT; |
| e->size = exif_format_get_size (e->format) * e->components; |
| e->data = exif_entry_alloc (e, e->size); |
| if (!e->data) break; |
| exif_set_short (e->data, o, 2); |
| exif_set_short ( |
| e->data + exif_format_get_size (e->format), |
| o, 1); |
| break; |
| |
| /* SRATIONAL, 1 component, no default */ |
| case EXIF_TAG_EXPOSURE_BIAS_VALUE: |
| case EXIF_TAG_BRIGHTNESS_VALUE: |
| case EXIF_TAG_SHUTTER_SPEED_VALUE: |
| e->components = 1; |
| e->format = EXIF_FORMAT_SRATIONAL; |
| e->size = exif_format_get_size (e->format) * e->components; |
| e->data = exif_entry_alloc (e, e->size); |
| if (!e->data) break; |
| break; |
| |
| /* RATIONAL, 1 component, no default */ |
| case EXIF_TAG_EXPOSURE_TIME: |
| case EXIF_TAG_FOCAL_PLANE_X_RESOLUTION: |
| case EXIF_TAG_FOCAL_PLANE_Y_RESOLUTION: |
| case EXIF_TAG_EXPOSURE_INDEX: |
| case EXIF_TAG_FLASH_ENERGY: |
| case EXIF_TAG_FNUMBER: |
| case EXIF_TAG_FOCAL_LENGTH: |
| case EXIF_TAG_SUBJECT_DISTANCE: |
| case EXIF_TAG_MAX_APERTURE_VALUE: |
| case EXIF_TAG_APERTURE_VALUE: |
| case EXIF_TAG_COMPRESSED_BITS_PER_PIXEL: |
| case EXIF_TAG_PRIMARY_CHROMATICITIES: |
| case EXIF_TAG_DIGITAL_ZOOM_RATIO: |
| e->components = 1; |
| e->format = EXIF_FORMAT_RATIONAL; |
| e->size = exif_format_get_size (e->format) * e->components; |
| e->data = exif_entry_alloc (e, e->size); |
| if (!e->data) break; |
| break; |
| |
| /* RATIONAL, 1 component, default 72/1 */ |
| case EXIF_TAG_X_RESOLUTION: |
| case EXIF_TAG_Y_RESOLUTION: |
| e->components = 1; |
| e->format = EXIF_FORMAT_RATIONAL; |
| e->size = exif_format_get_size (e->format) * e->components; |
| e->data = exif_entry_alloc (e, e->size); |
| if (!e->data) break; |
| r.numerator = 72; |
| r.denominator = 1; |
| exif_set_rational (e->data, o, r); |
| break; |
| |
| /* RATIONAL, 2 components, no default */ |
| case EXIF_TAG_WHITE_POINT: |
| e->components = 2; |
| e->format = EXIF_FORMAT_RATIONAL; |
| e->size = exif_format_get_size (e->format) * e->components; |
| e->data = exif_entry_alloc (e, e->size); |
| if (!e->data) break; |
| break; |
| |
| /* RATIONAL, 6 components */ |
| case EXIF_TAG_REFERENCE_BLACK_WHITE: |
| e->components = 6; |
| e->format = EXIF_FORMAT_RATIONAL; |
| e->size = exif_format_get_size (e->format) * e->components; |
| e->data = exif_entry_alloc (e, e->size); |
| if (!e->data) break; |
| r.denominator = 1; |
| r.numerator = 0; |
| exif_set_rational (e->data, o, r); |
| r.numerator = 255; |
| exif_set_rational ( |
| e->data + exif_format_get_size (e->format), o, r); |
| r.numerator = 0; |
| exif_set_rational ( |
| e->data + 2 * exif_format_get_size (e->format), o, r); |
| r.numerator = 255; |
| exif_set_rational ( |
| e->data + 3 * exif_format_get_size (e->format), o, r); |
| r.numerator = 0; |
| exif_set_rational ( |
| e->data + 4 * exif_format_get_size (e->format), o, r); |
| r.numerator = 255; |
| exif_set_rational ( |
| e->data + 5 * exif_format_get_size (e->format), o, r); |
| break; |
| |
| /* ASCII, 20 components */ |
| case EXIF_TAG_DATE_TIME: |
| case EXIF_TAG_DATE_TIME_ORIGINAL: |
| case EXIF_TAG_DATE_TIME_DIGITIZED: |
| { |
| time_t t; |
| #ifdef HAVE_LOCALTIME_R |
| struct tm tms; |
| #endif |
| struct tm *tm; |
| |
| t = time (NULL); |
| #ifdef HAVE_LOCALTIME_R |
| tm = localtime_r (&t, &tms); |
| #else |
| tm = localtime (&t); |
| #endif |
| e->components = 20; |
| e->format = EXIF_FORMAT_ASCII; |
| e->size = exif_format_get_size (e->format) * e->components; |
| e->data = exif_entry_alloc (e, e->size); |
| if (!e->data) break; |
| snprintf ((char *) e->data, e->size, |
| "%04i:%02i:%02i %02i:%02i:%02i", |
| tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday, |
| tm->tm_hour, tm->tm_min, tm->tm_sec); |
| break; |
| } |
| |
| /* ASCII, no default */ |
| case EXIF_TAG_SUB_SEC_TIME: |
| case EXIF_TAG_SUB_SEC_TIME_ORIGINAL: |
| case EXIF_TAG_SUB_SEC_TIME_DIGITIZED: |
| e->components = 0; |
| e->format = EXIF_FORMAT_ASCII; |
| e->size = 0; |
| e->data = NULL; |
| break; |
| |
| /* ASCII, default "[None]" */ |
| case EXIF_TAG_IMAGE_DESCRIPTION: |
| case EXIF_TAG_MAKE: |
| case EXIF_TAG_MODEL: |
| case EXIF_TAG_SOFTWARE: |
| case EXIF_TAG_ARTIST: |
| e->components = strlen (_("[None]")) + 1; |
| e->format = EXIF_FORMAT_ASCII; |
| e->size = exif_format_get_size (e->format) * e->components; |
| e->data = exif_entry_alloc (e, e->size); |
| if (!e->data) break; |
| strncpy ((char *)e->data, _("[None]"), e->size); |
| break; |
| /* ASCII, default "[None]\0[None]\0" */ |
| case EXIF_TAG_COPYRIGHT: |
| e->components = (strlen (_("[None]")) + 1) * 2; |
| e->format = EXIF_FORMAT_ASCII; |
| e->size = exif_format_get_size (e->format) * e->components; |
| e->data = exif_entry_alloc (e, e->size); |
| if (!e->data) break; |
| strcpy (((char *)e->data) + 0, _("[None]")); |
| strcpy (((char *)e->data) + strlen (_("[None]")) + 1, _("[None]")); |
| break; |
| |
| /* UNDEFINED, 1 component, default 1 */ |
| case EXIF_TAG_SCENE_TYPE: |
| e->components = 1; |
| e->format = EXIF_FORMAT_UNDEFINED; |
| e->size = exif_format_get_size (e->format) * e->components; |
| e->data = exif_entry_alloc (e, e->size); |
| if (!e->data) break; |
| e->data[0] = 0x01; |
| break; |
| |
| /* UNDEFINED, 1 component, default 3 */ |
| case EXIF_TAG_FILE_SOURCE: |
| e->components = 1; |
| e->format = EXIF_FORMAT_UNDEFINED; |
| e->size = exif_format_get_size (e->format) * e->components; |
| e->data = exif_entry_alloc (e, e->size); |
| if (!e->data) break; |
| e->data[0] = 0x03; |
| break; |
| |
| /* UNDEFINED, 4 components, default 48 49 48 48 */ |
| case EXIF_TAG_FLASH_PIX_VERSION: |
| e->components = 4; |
| e->format = EXIF_FORMAT_UNDEFINED; |
| e->size = exif_format_get_size (e->format) * e->components; |
| e->data = exif_entry_alloc (e, e->size); |
| if (!e->data) break; |
| memcpy (e->data, "0100", 4); |
| break; |
| |
| /* UNDEFINED, 4 components, default 48 50 49 48 */ |
| case EXIF_TAG_EXIF_VERSION: |
| e->components = 4; |
| e->format = EXIF_FORMAT_UNDEFINED; |
| e->size = exif_format_get_size (e->format) * e->components; |
| e->data = exif_entry_alloc (e, e->size); |
| if (!e->data) break; |
| memcpy (e->data, "0210", 4); |
| break; |
| |
| /* UNDEFINED, 4 components, default 1 2 3 0 */ |
| case EXIF_TAG_COMPONENTS_CONFIGURATION: |
| e->components = 4; |
| e->format = EXIF_FORMAT_UNDEFINED; |
| e->size = exif_format_get_size (e->format) * e->components; |
| e->data = exif_entry_alloc (e, e->size); |
| if (!e->data) break; |
| e->data[0] = 1; |
| e->data[1] = 2; |
| e->data[2] = 3; |
| e->data[3] = 0; |
| break; |
| |
| /* UNDEFINED, no components, no default */ |
| /* Use this if the tag is otherwise unsupported */ |
| case EXIF_TAG_MAKER_NOTE: |
| case EXIF_TAG_USER_COMMENT: |
| default: |
| e->components = 0; |
| e->format = EXIF_FORMAT_UNDEFINED; |
| e->size = 0; |
| e->data = NULL; |
| break; |
| } |
| } |