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-rw-r--r--src/libexif/exif-entry.c1383
1 files changed, 1383 insertions, 0 deletions
diff --git a/src/libexif/exif-entry.c b/src/libexif/exif-entry.c
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index 0000000..09d37e2
--- /dev/null
+++ b/src/libexif/exif-entry.c
@@ -0,0 +1,1383 @@
+/* exif-entry.c
+ *
+ * Copyright © 2001 Lutz Müller <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., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, 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>
+
+struct _ExifEntryPrivate
+{
+ unsigned int ref_count;
+
+ ExifMem *mem;
+};
+
+/* This function is hidden in exif-data.c */
+ExifLog *exif_data_get_log (ExifData *);
+
+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);
+}
+
+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);
+ }
+}
+
+void
+exif_entry_fix (ExifEntry *e)
+{
+ unsigned int i;
+ 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:
+ switch (e->format) {
+ case EXIF_FORMAT_LONG:
+ if (!e->parent || !e->parent->parent) break;
+ o = exif_data_get_byte_order (e->parent->parent);
+ for (i = 0; i < e->components; i++)
+ exif_set_short (
+ e->data + i *
+ exif_format_get_size (
+ EXIF_FORMAT_SHORT), o,
+ (ExifShort) exif_get_long (
+ e->data + i *
+ exif_format_get_size (
+ EXIF_FORMAT_LONG), o));
+ e->format = EXIF_FORMAT_SHORT;
+ e->size = e->components *
+ exif_format_get_size (e->format);
+ e->data = exif_entry_realloc (e, e->data, e->size);
+ 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 (e->tag),
+ exif_format_get_name (EXIF_FORMAT_LONG),
+ exif_format_get_name (EXIF_FORMAT_SHORT));
+ break;
+ case EXIF_FORMAT_SHORT:
+ default:
+ 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 (e->tag),
+ exif_format_get_name (EXIF_FORMAT_SRATIONAL),
+ exif_format_get_name (EXIF_FORMAT_RATIONAL));
+ 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);
+ }
+
+ /* Some cameras fill the tag with '\0' or ' '. */
+ for (i = 0; i < e->size &&
+ (!e->data[i] || (e->data[i] == ' ')); i++);
+ if (i && (i == e->size)) {
+ exif_entry_log (e, EXIF_LOG_CODE_DEBUG,
+ "Tag 'UserComment' contained unnecessary "
+ "data which has been removed.");
+ exif_mem_free (e->priv->mem, e->data);
+ e->data = NULL;
+ e->size = 0;
+ e->components = 0;
+ }
+
+ /* 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.
+ */
+ if (i >= 8) {
+ exif_entry_log (e, EXIF_LOG_CODE_DEBUG,
+ "Tag 'UserComment' did not start with "
+ "format identifyer. This has been fixed.");
+ memcpy (e->data, "ASCII\0\0\0", 8);
+ }
+
+ /* First 8 bytes need to follow the specification. */
+ 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 "
+ "format identifyer. This has been fixed.");
+ break;
+ }
+
+ break;
+ default:
+ 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 (e->tag));
+ 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)));
+}
+
+#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 struct {
+ ExifTag tag;
+ const char *strings[10];
+} list[] = {
+ { 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_("RGB"), N_("YCbCr"), 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}},
+ { 0, {NULL}}
+};
+
+static struct {
+ ExifTag tag;
+ struct {
+ int index;
+ const char *values[4];
+ } elem[25];
+} list2[] = {
+ { 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}},
+ {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_("W/o strobe"),
+ NULL}},
+ {0x0007, {N_("Strobe return light detected."), N_("W. strobe"), NULL}},
+ {0x0009, {N_("Flash fired, compulsatory flash mode"), NULL}},
+ {0x000d, {N_("Flash fired, compulsatory flash mode, return light "
+ "not detected."), NULL}},
+ {0x000f, {N_("Flash fired, compulsatory flash mode, return light "
+ "detected."), NULL}},
+ {0x0010, {N_("Flash did not fire, compulsatory 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, "
+ "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}},
+ {0xffff, {N_("Uncalibrated"), NULL}}}},
+ {0, }
+};
+
+const char *
+exif_entry_get_value (ExifEntry *e, char *val, unsigned int maxlen)
+{
+ unsigned int i, j, k, l, ts;
+ const unsigned char *t;
+ ExifByte v_byte;
+ ExifShort v_short, v_short2, v_short3, v_short4;
+ ExifLong v_long;
+ ExifSLong v_slong;
+ ExifRational v_rat;
+ ExifSRational v_srat;
+ char b[64];
+ const char *c;
+ ExifByteOrder o;
+ double d;
+ ExifEntry *entry;
+ static struct {
+ char *label;
+ char major, minor;
+ } versions[] = {
+ {"0110", 1, 1},
+ {"0120", 1, 2},
+ {"0200", 2, 0},
+ {"0210", 2, 1},
+ {"0220", 2, 2},
+ {"0221", 2, 21},
+ {NULL , 0, 0}
+ };
+
+ /* FIXME: This belongs to somewhere else. */
+ bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
+ bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
+
+ /* We need the byte order */
+ if (!e || !e->parent || !e->parent->parent)
+ return val;
+ o = exif_data_get_byte_order (e->parent->parent);
+
+ memset (val, 0, maxlen);
+ memset (b, 0, sizeof (b));
+ maxlen--;
+
+ /* 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);
+ break;
+ }
+ if ((e->size >= 8) && !memcmp (e->data, "JIS\0\0\0\0\0", 8)) {
+ strncpy (val, _("Unsupported JIS string"), maxlen);
+ 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 and seems to contain data.
+ * Print as much as possible.
+ */
+ exif_entry_log (e, EXIF_LOG_CODE_DEBUG,
+ "Tag UserComment does not comply "
+ "with standard but contains data.");
+ for (; (i < e->size) && (strlen (val) < maxlen - 1); i++) {
+ exif_entry_log (e, EXIF_LOG_CODE_DEBUG,
+ "Byte at position %i: 0x%02x", i, e->data[i]);
+ val[strlen (val)] =
+ 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.
+ */
+ if (e->size && e->data &&
+ (strspn (e->data, " ") != strlen ((char *) e->data)))
+ 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. */
+ t = e->data + strlen ((char *) e->data) + 1;
+ ts = e->data + e->size - t;
+ strncat (val, " - ", maxlen - strlen (val));
+ if (e->size && e->data && (ts > 0) &&
+ (strspn (t, " ") != ts))
+ strncat (val, t, MIN (maxlen - strlen (val), ts));
+ else
+ 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) return val;
+ snprintf (val, maxlen, "f/%.01f", (float) v_rat.numerator /
+ (float) v_rat.denominator);
+ break;
+ case EXIF_TAG_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) return val;
+ snprintf (val, maxlen, "f/%.01f",
+ pow (2 , ((float) v_rat.numerator /
+ (float) v_rat.denominator) / 2.));
+ 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) return val;
+
+ /*
+ * 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 &&
+ !strncmp (entry->data, "Minolta", 7)) {
+ entry = exif_content_get_entry (
+ e->parent->parent->ifd[EXIF_IFD_0],
+ EXIF_TAG_MODEL);
+ if (entry && entry->data) {
+ if (!strncmp (entry->data, "DiMAGE 7", 8))
+ d = 3.9;
+ else if (!strncmp (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));
+
+ snprintf (val, maxlen, "%.1f mm",
+ (float) v_rat.numerator / (float) v_rat.denominator);
+ if (maxlen > strlen (val) + strlen (b))
+ strncat (val, b, maxlen - strlen (val) - 1);
+ 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) return val;
+ snprintf (val, maxlen, "%.1f m", (float) v_rat.numerator /
+ (float) v_rat.denominator);
+ 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) return val;
+ d = (double) v_rat.numerator / (double) v_rat.denominator;
+ if (d < 1)
+ snprintf (val, maxlen, _("1/%d"),
+ (int) (1. / d));
+ else
+ snprintf (val, maxlen, _("%d"), (int) d);
+ if (maxlen > strlen (val) + strlen (_(" sec.")))
+ strncat (val, _(" sec."), maxlen - strlen (val) - 1);
+ 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) return val;
+ snprintf (val, maxlen, "%.0f/%.0f", (float) v_srat.numerator,
+ (float) v_srat.denominator);
+ if (maxlen > strlen (val) + strlen (_(" sec.")))
+ strncat (val, _(" sec."), maxlen - strlen (val) - 1);
+ snprintf (b, sizeof (b), " (APEX: %i)",
+ (int) pow (sqrt(2), (float) v_srat.numerator /
+ (float) v_srat.denominator));
+ if (maxlen > strlen (val) + strlen (b))
+ strncat (val, b, maxlen - strlen (val) - 1);
+ 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);
+ snprintf (val, maxlen, "%i/%i", (int) v_srat.numerator,
+ (int) v_srat.denominator);
+ /* FIXME: How do I calculate the APEX value? */
+ break;
+ case EXIF_TAG_FILE_SOURCE:
+ CF (e, EXIF_FORMAT_UNDEFINED, val, maxlen);
+ CC (e, 1, val, maxlen);
+ switch (e->data[0]) {
+ case 0x03: strncpy (val, _("DSC"), maxlen); break;
+ default: snprintf (val, maxlen, "0x%02x", e->data[0]); break;
+ }
+ 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) return val;
+ snprintf (val, maxlen, "%s%.01f",
+ v_srat.denominator * v_srat.numerator > 0 ? "+" : "",
+ (double) v_srat.numerator /
+ (double) v_srat.denominator);
+ 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, "%i, %i", v_short, v_short2);
+ break;
+ case EXIF_TAG_MAKER_NOTE:
+ CF (e, EXIF_FORMAT_UNDEFINED, val, maxlen);
+ snprintf (val, maxlen, _("%i bytes unknown data"),
+ (int) e->components);
+ 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_METERING_MODE:
+ case EXIF_TAG_COMPRESSION:
+ 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) {
+ strncpy (val, "Internal error.", maxlen - 1);
+ break;
+ }
+
+ /* Find the value */
+ for (j = 0; list2[i].elem[j].values &&
+ (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 &&
+ list2[i].elem[j].values[k]; k++) {
+ l = strlen (_(list2[i].elem[j].values[k]));
+ if ((maxlen > l) && (strlen (val) < l))
+ strncpy (val, _(list2[i].elem[j].values[k]), maxlen - 1);
+ }
+ if (!strlen (val)) 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) {
+ strncpy (val, "Internal error.", maxlen - 1);
+ 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
+ strncpy (val, _(list[i].strings[j]), maxlen - 1);
+ break;
+ default:
+ if (!e->components) break;
+ switch (e->format) {
+ case EXIF_FORMAT_UNDEFINED:
+ break;
+ case EXIF_FORMAT_BYTE:
+ case EXIF_FORMAT_SBYTE:
+ v_byte = e->data[0];
+ snprintf (val, maxlen, "0x%02x", v_byte);
+ maxlen -= strlen (val);
+ for (i = 1; i < e->components; i++) {
+ v_byte = e->data[i];
+ snprintf (b, sizeof (b), ", 0x%02x", v_byte);
+ strncat (val, b, maxlen);
+ maxlen -= strlen (b);
+ if ((signed)maxlen <= 0) break;
+ }
+ break;
+ case EXIF_FORMAT_SHORT:
+ case EXIF_FORMAT_SSHORT:
+ v_short = exif_get_short (e->data, o);
+ snprintf (val, maxlen, "%i", v_short);
+ maxlen -= 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 (b, sizeof (b), ", %i", v_short);
+ strncat (val, b, maxlen);
+ maxlen -= strlen (b);
+ if ((signed)maxlen <= 0) break;
+ }
+ break;
+ case EXIF_FORMAT_LONG:
+ v_long = exif_get_long (e->data, o);
+ snprintf (val, maxlen, "%li", (long int) v_long);
+ maxlen -= 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 (b, sizeof (b), ", %li",
+ (long int) v_long);
+ strncat (val, b, maxlen);
+ maxlen -= strlen (b);
+ if ((signed)maxlen <= 0) break;
+ }
+ break;
+ case EXIF_FORMAT_SLONG:
+ v_slong = exif_get_slong (e->data, o);
+ snprintf (val, maxlen, "%li", (long int) v_slong);
+ maxlen -= strlen (val);
+ for (i = 1; i < e->components; i++) {
+ v_long = exif_get_slong (e->data +
+ exif_format_get_size (e->format) *
+ i, o);
+ snprintf (b, sizeof (b), ", %li",
+ (long int) v_long);
+ strncat (val, b, maxlen);
+ maxlen -= strlen (b);
+ if ((signed)maxlen <= 0) break;
+ }
+ break;
+ case EXIF_FORMAT_ASCII:
+ strncpy (val, (char *) e->data, MIN (maxlen, e->size));
+ break;
+ case EXIF_FORMAT_RATIONAL:
+ v_rat = exif_get_rational (e->data, o);
+ if (v_rat.denominator) {
+ snprintf (val, maxlen, "%2.2f", (double)v_rat.numerator / v_rat.denominator);
+ } else {
+ snprintf (val, maxlen, "%i/%i", v_rat.numerator, v_rat.denominator);
+ }
+ maxlen -= strlen (val);
+ for (i = 1; i < e->components; i++) {
+ v_rat = exif_get_rational (
+ e->data + 8 * i, o);
+ snprintf (b, sizeof (b), ", %2.2f",
+ (double)v_rat.numerator / v_rat.denominator);
+ strncat (val, b, maxlen);
+ maxlen -= strlen (b);
+ if ((signed)maxlen <= 0) break;
+ }
+ break;
+ case EXIF_FORMAT_SRATIONAL:
+ v_srat = exif_get_srational (e->data, o);
+ if (v_srat.denominator) {
+ snprintf (val, maxlen, "%2.2f", (double)v_srat.numerator / v_srat.denominator);
+ } else {
+ snprintf (val, maxlen, "%i/%i", v_srat.numerator, v_srat.denominator);
+ }
+ maxlen -= strlen (val);
+ for (i = 1; i < e->components; i++) {
+ v_srat = exif_get_srational (
+ e->data + 8 * i, o);
+ snprintf (b, sizeof (b), ", %2.2f",
+ (double)v_srat.numerator / v_srat.denominator);
+ strncat (val, b, maxlen);
+ maxlen -= strlen (b);
+ if ((signed) maxlen <= 0) break;
+ }
+ break;
+ case EXIF_FORMAT_DOUBLE:
+ case EXIF_FORMAT_FLOAT:
+ default:
+ /* What to do here? */
+ break;
+ }
+ }
+
+ return val;
+}
+
+void
+exif_entry_initialize (ExifEntry *e, ExifTag tag)
+{
+ time_t t;
+ struct tm *tm;
+ 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);
+ 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_COLOR_SPACE:
+
+ /* 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);
+ 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);
+ 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);
+ 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);
+ exif_set_short (e->data, o, 3);
+ break;
+
+ 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;
+ 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;
+
+ /* SHORT, any component, no default */
+ case EXIF_TAG_SUBJECT_AREA:
+ case EXIF_TAG_ISO_SPEED_RATINGS:
+ e->components = 0;
+ e->format = EXIF_FORMAT_SHORT;
+ e->size = 0;
+ e->data = 0;
+ 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);
+ 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);
+ 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);
+ 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);
+ 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, default current time */
+ case EXIF_TAG_DATE_TIME:
+ case EXIF_TAG_DATE_TIME_ORIGINAL:
+ case EXIF_TAG_DATE_TIME_DIGITIZED:
+ t = time (NULL);
+ tm = localtime (&t);
+ 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;
+
+ /* EXIF_FORMAT_ASCII, 13 components */
+ case EXIF_TAG_RELATED_SOUND_FILE:
+ e->components = 13;
+ e->format = EXIF_FORMAT_ASCII;
+ e->size = exif_format_get_size (e->format) * e->components;
+ e->data = exif_entry_alloc (e, e->size);
+ break;
+
+ case EXIF_TAG_IMAGE_UNIQUE_ID:
+ e->components = 33;
+ e->format = EXIF_FORMAT_ASCII;
+ e->size = exif_format_get_size (e->format) * e->components;
+ e->data = exif_entry_alloc (e, e->size);
+ break;
+
+ /* ASCII, any components, no default */
+ case EXIF_TAG_SPECTRAL_SENSITIVITY:
+ case EXIF_TAG_SUB_SEC_TIME:
+ case EXIF_TAG_SUB_SEC_TIME_ORIGINAL:
+ case EXIF_TAG_SUB_SEC_TIME_DIGITIZED:
+ case EXIF_TAG_IMAGE_DESCRIPTION:
+ case EXIF_TAG_MAKE:
+ case EXIF_TAG_MODEL:
+ case EXIF_TAG_SOFTWARE:
+ case EXIF_TAG_ARTIST:
+ case EXIF_TAG_COPYRIGHT:
+ e->components = 0;
+ e->format = EXIF_FORMAT_ASCII;
+ e->size = 0;
+ e->data = NULL;
+ break;
+
+ /* UNDEFINED, no components, no default */
+ case EXIF_TAG_OECF:
+ case EXIF_TAG_SPATIAL_FREQUENCY_RESPONSE:
+ case EXIF_TAG_NEW_CFA_PATTERN:
+ case EXIF_TAG_DEVICE_SETTING_DESCRIPTION:
+ case EXIF_TAG_MAKER_NOTE:
+ case EXIF_TAG_USER_COMMENT:
+ e->components = 0;
+ e->format = EXIF_FORMAT_UNDEFINED;
+ e->size = 0;
+ e->data = NULL;
+ 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 0 1 0 0 */
+ 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 0 2 1 0 */
+ 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, no default */
+ 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 = malloc (e->size);
+ break;
+
+ default:
+ break;
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-21 21:34:28 +0000