* 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
+ * 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.
+ * 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
* Boston, MA 02111-1307, USA.
*/
-#include "config.h"
-#include "exif-data.h"
-#include "exif-ifd.h"
-#include "exif-utils.h"
-#include "jpeg-marker.h"
+#include <config.h>
+
+#include <libexif/exif-mnote-data.h>
+#include <libexif/exif-data.h>
+#include <libexif/exif-ifd.h>
+#include <libexif/exif-mnote-data-priv.h>
+#include <libexif/exif-utils.h>
+#include <libexif/exif-loader.h>
+#include <libexif/exif-log.h>
+#include <libexif/i18n.h>
+
+#include <libexif/olympus/exif-mnote-data-olympus.h>
+#include <libexif/canon/exif-mnote-data-canon.h>
+#include <libexif/pentax/exif-mnote-data-pentax.h>
#include <stdlib.h>
#include <stdio.h>
#undef MAX
#define MAX(a, b) (((a) > (b)) ? (a) : (b))
-//#define DEBUG
+#if defined(__WATCOMC__) || defined(_MSC_VER)
+# define strncasecmp strnicmp
+#endif
+
+#undef JPEG_MARKER_SOI
+#define JPEG_MARKER_SOI 0xd8
+#undef JPEG_MARKER_APP0
+#define JPEG_MARKER_APP0 0xe0
+#undef JPEG_MARKER_APP1
+#define JPEG_MARKER_APP1 0xe1
static const unsigned char ExifHeader[] = {0x45, 0x78, 0x69, 0x66, 0x00, 0x00};
{
ExifByteOrder order;
+ ExifMnoteData *md;
+
+ ExifLog *log;
+ ExifMem *mem;
+
unsigned int ref_count;
+
+ /* Temporarily used while loading data */
+ unsigned int offset_mnote;
};
+static void *
+exif_data_alloc (ExifData *data, unsigned int i)
+{
+ void *d;
+
+ if (!data || !i) return NULL;
+
+ d = exif_mem_alloc (data->priv->mem, i);
+ if (d) return d;
+
+ EXIF_LOG_NO_MEMORY (data->priv->log, "ExifData", i);
+ return NULL;
+}
+
+ExifMnoteData *
+exif_data_get_mnote_data (ExifData *d)
+{
+ return (d && d->priv) ? d->priv->md : NULL;
+}
+
ExifData *
exif_data_new (void)
{
+ ExifMem *mem = exif_mem_new_default ();
+ ExifData *d = exif_data_new_mem (mem);
+
+ exif_mem_unref (mem);
+
+ return d;
+}
+
+ExifData *
+exif_data_new_mem (ExifMem *mem)
+{
ExifData *data;
unsigned int i;
- data = malloc (sizeof (ExifData));
- if (!data)
- return (NULL);
- memset (data, 0, sizeof (ExifData));
- data->priv = malloc (sizeof (ExifDataPrivate));
- if (!data->priv) {
- free (data);
- return (NULL);
- }
- memset (data->priv, 0, sizeof (ExifDataPrivate));
+ if (!mem) return NULL;
+
+ data = exif_mem_alloc (mem, sizeof (ExifData));
+ if (!data) return (NULL);
+ data->priv = exif_mem_alloc (mem, sizeof (ExifDataPrivate));
+ if (!data->priv) { exif_mem_free (mem, data); return (NULL); }
data->priv->ref_count = 1;
+ data->priv->mem = mem;
+ exif_mem_ref (mem);
+
for (i = 0; i < EXIF_IFD_COUNT; i++) {
- data->ifd[i] = exif_content_new ();
+ data->ifd[i] = exif_content_new_mem (data->priv->mem);
if (!data->ifd[i]) {
exif_data_free (data);
return (NULL);
entry->format = exif_get_short (d + offset + 2, data->priv->order);
entry->components = exif_get_long (d + offset + 4, data->priv->order);
+ exif_log (data->priv->log, EXIF_LOG_CODE_DEBUG, "ExifData",
+ "Loading entry 0x%x ('%s')...", entry->tag,
+ exif_tag_get_name (entry->tag));
+
/*
* Size? If bigger than 4 bytes, the actual data is not
* in the entry but somewhere else (offset).
if (size < doff + s)
return;
- entry->data = malloc (sizeof (char) * s);
- if (!entry->data)
- return;
- entry->size = s;
- memcpy (entry->data, d + doff, s);
+ entry->data = exif_data_alloc (data, s);
+ if (entry->data) {
+ entry->size = s;
+ memcpy (entry->data, d + doff, s);
+ }
+
+ /* If this is the MakerNote, remember the offset */
+ if (entry->tag == EXIF_TAG_MAKER_NOTE) {
+ if (entry->size > 6) exif_log (data->priv->log,
+ EXIF_LOG_CODE_DEBUG, "ExifData",
+ "MakerNote found (%02x %02x %02x %02x "
+ "%02x %02x %02x...).",
+ entry->data[0], entry->data[1], entry->data[2],
+ entry->data[3], entry->data[4], entry->data[5],
+ entry->data[6]);
+ data->priv->offset_mnote = doff;
+ }
+
+ exif_entry_fix (entry);
}
static void
-exif_data_save_data_entry (ExifData *data, ExifEntry *entry,
+exif_data_save_data_entry (ExifData *data, ExifEntry *e,
unsigned char **d, unsigned int *ds,
unsigned int offset)
{
unsigned int doff, s;
+ if (!data || !data->priv) return;
+
/*
* Each entry is 12 bytes long. The memory for the entry has
* already been allocated.
*/
exif_set_short (*d + 6 + offset + 0,
- data->priv->order, entry->tag);
+ data->priv->order, (ExifShort) e->tag);
exif_set_short (*d + 6 + offset + 2,
- data->priv->order, entry->format);
+ data->priv->order, (ExifShort) e->format);
+
+#ifndef EXIF_DONT_CHANGE_MAKER_NOTE
+ /* If this is the maker note tag, update it. */
+ if ((e->tag == EXIF_TAG_MAKER_NOTE) && data->priv->md) {
+ exif_mem_free (data->priv->mem, e->data);
+ e->data = NULL;
+ e->size = 0;
+ exif_mnote_data_set_offset (data->priv->md, *ds - 6);
+ exif_mnote_data_save (data->priv->md, &e->data, &e->size);
+ e->components = e->size;
+ }
+#endif
+
exif_set_long (*d + 6 + offset + 4,
- data->priv->order, entry->components);
+ data->priv->order, e->components);
/*
* Size? If bigger than 4 bytes, the actual data is not in
* the entry but somewhere else.
*/
- s = exif_format_get_size (entry->format) * entry->components;
- if (!s)
- return;
+ s = exif_format_get_size (e->format) * e->components;
if (s > 4) {
- *ds += entry->size;
- *d = realloc (*d, sizeof (char) * *ds);
- doff = *ds - 6 - entry->size;
- exif_set_long (*d + 6 + offset + 8,
- data->priv->order, doff);
+ doff = *ds - 6;
+ *ds += s;
+
+ /*
+ * According to the TIFF specification,
+ * the offset must be an even number. If we need to introduce
+ * a padding byte, we set it to 0.
+ */
+ if (s & 1) (*ds)++;
+ *d = exif_mem_realloc (data->priv->mem, *d, *ds);
+ if (!*d) {
+ EXIF_LOG_NO_MEMORY (data->priv->log, "ExifData", *ds);
+ return;
+ }
+ exif_set_long (*d + 6 + offset + 8, data->priv->order, doff);
+ if (s & 1) *(*d + *ds - 1) = '\0';
+
} else
doff = offset + 8;
- memcpy (*d + 6 + doff, entry->data, entry->size);
+
+ /* Write the data. Fill unneeded bytes with 0. */
+ memcpy (*d + 6 + doff, e->data, s);
+ if (s < 4) memset (*d + 6 + doff + s, 0, (4 - s));
}
static void
unsigned int ds, ExifLong offset, ExifLong size)
{
if (ds < offset + size) {
-#ifdef DEBUG
- printf ("Bogus thumbnail offset and size: %i < %i + %i.\n",
- (int) ds, (int) offset, (int) size);
-#endif
+ exif_log (data->priv->log, EXIF_LOG_CODE_DEBUG, "ExifData",
+ "Bogus thumbnail offset and size: %i < %i + %i.",
+ (int) ds, (int) offset, (int) size);
return;
}
- if (data->data)
- free (data->data);
+ if (data->data) exif_mem_free (data->priv->mem, data->data);
data->size = size;
- data->data = malloc (sizeof (char) * data->size);
+ data->data = exif_data_alloc (data, data->size);
+ if (!data->data) return;
memcpy (data->data, d + offset, data->size);
}
+#undef CHECK_REC
+#define CHECK_REC(i) \
+if (data->ifd[(i)] == ifd) { \
+ exif_log (data->priv->log, EXIF_LOG_CODE_DEBUG, \
+ "ExifData", "Recursive entry in IFD " \
+ "'%s' detected. Skipping...", \
+ exif_ifd_get_name (i)); \
+ break; \
+} \
+if (data->ifd[(i)]->count) { \
+ exif_log (data->priv->log, EXIF_LOG_CODE_DEBUG, \
+ "ExifData", "Attemt to load IFD " \
+ "'%s' multiple times detected. " \
+ "Skipping...", \
+ exif_ifd_get_name (i)); \
+ break; \
+}
+
static void
exif_data_load_data_content (ExifData *data, ExifContent *ifd,
const unsigned char *d,
unsigned int i;
ExifTag tag;
+ if (!data || !data->priv) return;
+
/* Read the number of entries */
+ if (offset >= ds - 1) return;
n = exif_get_short (d + offset, data->priv->order);
-#ifdef DEBUG
- printf ("Loading %i entries...\n", n);
-#endif
+ exif_log (data->priv->log, EXIF_LOG_CODE_DEBUG, "ExifData",
+ "Loading %i entries...", n);
offset += 2;
+
+ /* Check if we have enough data. */
+ if (offset + 12 * n > ds) n = (ds - offset) / 12;
+
for (i = 0; i < n; i++) {
tag = exif_get_short (d + offset + 12 * i, data->priv->order);
-#ifdef DEBUG
- printf ("Loading entry '%s' (%i of %i)...\n",
- exif_tag_get_name (tag), i + 1, n);
-#endif
switch (tag) {
case EXIF_TAG_EXIF_IFD_POINTER:
case EXIF_TAG_GPS_INFO_IFD_POINTER:
data->priv->order);
switch (tag) {
case EXIF_TAG_EXIF_IFD_POINTER:
+ CHECK_REC (EXIF_IFD_EXIF);
exif_data_load_data_content (data,
data->ifd[EXIF_IFD_EXIF], d, ds, o);
break;
case EXIF_TAG_GPS_INFO_IFD_POINTER:
+ CHECK_REC (EXIF_IFD_GPS);
exif_data_load_data_content (data,
data->ifd[EXIF_IFD_GPS], d, ds, o);
break;
case EXIF_TAG_INTEROPERABILITY_IFD_POINTER:
+ CHECK_REC (EXIF_IFD_INTEROPERABILITY);
exif_data_load_data_content (data,
data->ifd[EXIF_IFD_INTEROPERABILITY], d, ds, o);
break;
case EXIF_TAG_JPEG_INTERCHANGE_FORMAT:
-#ifdef DEBUG
- printf ("Thumbnail at %i.\n", (int) o);
-#endif
thumbnail_offset = o;
if (thumbnail_offset && thumbnail_length)
exif_data_load_data_thumbnail (data, d,
thumbnail_length);
break;
case EXIF_TAG_JPEG_INTERCHANGE_FORMAT_LENGTH:
-#ifdef DEBUG
- printf ("Thumbnail size: %i.\n", (int) o);
-#endif
thumbnail_length = o;
if (thumbnail_offset && thumbnail_length)
exif_data_load_data_thumbnail (data, d,
}
break;
default:
- entry = exif_entry_new ();
- exif_content_add_entry (ifd, entry);
+
+ /*
+ * If we don't know the tag, chances are high
+ * that the EXIF data does not follow the standard.
+ */
+ if (!exif_tag_get_name (tag)) {
+ exif_log (data->priv->log, EXIF_LOG_CODE_DEBUG, "ExifData",
+ "Unknown tag %x (entry %i)", tag, i);
+ return;
+ }
+ entry = exif_entry_new_mem (data->priv->mem);
exif_data_load_data_entry (data, entry, d, ds,
offset + 12 * i);
+ exif_content_add_entry (ifd, entry);
exif_entry_unref (entry);
break;
}
}
}
+static int
+cmp_func (const unsigned char *p1, const unsigned char *p2, ExifByteOrder o)
+{
+ ExifShort tag1 = exif_get_short (p1, o);
+ ExifShort tag2 = exif_get_short (p2, o);
+
+ return (tag1 < tag2) ? -1 : (tag1 > tag2) ? 1 : 0;
+}
+
+static int
+cmp_func_intel (const void *elem1, const void *elem2)
+{
+ return cmp_func ((const unsigned char *) elem1,
+ (const unsigned char *) elem2, EXIF_BYTE_ORDER_INTEL);
+}
+
+static int
+cmp_func_motorola (const void *elem1, const void *elem2)
+{
+ return cmp_func ((const unsigned char *) elem1,
+ (const unsigned char *) elem2, EXIF_BYTE_ORDER_MOTOROLA);
+}
+
static void
exif_data_save_data_content (ExifData *data, ExifContent *ifd,
unsigned char **d, unsigned int *ds,
unsigned int j, n_ptr = 0, n_thumb = 0;
ExifIfd i;
- if (!data || !ifd || !d || !ds)
- return;
+ if (!data || !data->priv || !ifd || !d || !ds) return;
for (i = 0; i < EXIF_IFD_COUNT; i++)
if (ifd == data->ifd[i])
* and the number of entries.
*/
*ds += (2 + (ifd->count + n_ptr + n_thumb) * 12 + 4);
- *d = realloc (*d, sizeof (char) * *ds);
+ *d = exif_mem_realloc (data->priv->mem, *d, *ds);
+ if (!*d) {
+ EXIF_LOG_NO_MEMORY (data->priv->log, "ExifData", *ds);
+ return;
+ }
/* Save the number of entries */
exif_set_short (*d + 6 + offset, data->priv->order,
- ifd->count + n_ptr + n_thumb);
+ (ExifShort) (ifd->count + n_ptr + n_thumb));
offset += 2;
-#ifdef DEBUG
- printf ("Saving %i entries (IFD '%s', offset: %i)...\n",
- ifd->count, exif_ifd_get_name (i), offset);
-#endif
-
/* Save each entry */
+ exif_log (data->priv->log, EXIF_LOG_CODE_DEBUG, "ExifData",
+ "Saving %i entries (IFD '%s', offset: %i)...",
+ ifd->count, exif_ifd_get_name (i), offset);
for (j = 0; j < ifd->count; j++)
- exif_data_save_data_entry (data, ifd->entries[j],
- d, ds, offset + 12 * j);
+ exif_data_save_data_entry (data, ifd->entries[j], d, ds, offset + 12 * j);
+
offset += 12 * ifd->count;
/* Now save special entries. */
exif_set_long (*d + 6 + offset + 8, data->priv->order,
*ds - 6);
*ds += data->size;
- *d = realloc (*d, sizeof (char) * *ds);
+ *d = exif_mem_realloc (data->priv->mem, *d, *ds);
+ if (!*d) {
+ EXIF_LOG_NO_MEMORY (data->priv->log, "ExifData",
+ *ds);
+ return;
+ }
memcpy (*d + *ds - data->size, data->data, data->size);
offset += 12;
-#ifdef DEBUG
- printf ("Wrote %i bytes of thumbnail data at offset "
- "%i.\n", data->size, *ds - data->size);
- printf ("We currently have %i bytes EXIF data.\n", *ds);
-#endif
/* EXIF_TAG_JPEG_INTERCHANGE_FORMAT_LENGTH */
exif_set_short (*d + 6 + offset + 0, data->priv->order,
EXIF_FORMAT_LONG);
exif_set_long (*d + 6 + offset + 4, data->priv->order,
1);
- exif_set_long (*d + 6 + offset + 8, data->priv->order,
+ exif_set_long (*d + 6 + offset + 8, data->priv->order,
data->size);
offset += 12;
}
break;
}
+ /* Sort the directory according to TIFF specification */
+ qsort (*d + 6 + offset - (ifd->count + n_ptr + n_thumb) * 12,
+ (ifd->count + n_ptr + n_thumb), 12,
+ data->priv->order == EXIF_BYTE_ORDER_INTEL ? cmp_func_intel : cmp_func_motorola);
+
/* Correctly terminate the directory */
if (i == EXIF_IFD_0 && (data->ifd[EXIF_IFD_1]->count ||
data->size)) {
exif_set_long (*d + 6 + offset, data->priv->order, 0);
}
+typedef enum {
+ EXIF_DATA_TYPE_MAKER_NOTE_NONE = 0,
+ EXIF_DATA_TYPE_MAKER_NOTE_CANON = 1,
+ EXIF_DATA_TYPE_MAKER_NOTE_OLYMPUS = 2,
+ EXIF_DATA_TYPE_MAKER_NOTE_PENTAX = 3
+} ExifDataTypeMakerNote;
+
+static ExifDataTypeMakerNote
+exif_data_get_type_maker_note (ExifData *d)
+{
+ ExifEntry *e, *em;
+ char value[1024];
+
+ if (!d) return EXIF_DATA_TYPE_MAKER_NOTE_NONE;
+
+ e = exif_data_get_entry (d, EXIF_TAG_MAKER_NOTE);
+ if (!e) return EXIF_DATA_TYPE_MAKER_NOTE_NONE;
+
+ /* Olympus & Nikon */
+ if ((e->size >= 5) && (!memcmp (e->data, "OLYMP", 5) ||
+ !memcmp (e->data, "Nikon", 5)))
+ return EXIF_DATA_TYPE_MAKER_NOTE_OLYMPUS;
+
+ em = exif_data_get_entry (d, EXIF_TAG_MAKE);
+ if (!em) return EXIF_DATA_TYPE_MAKER_NOTE_NONE;
+
+ /* Canon */
+ if (!strcmp (exif_entry_get_value (em, value, sizeof (value)), "Canon"))
+ return EXIF_DATA_TYPE_MAKER_NOTE_CANON;
+
+ /* Pentax & some variant of Nikon */
+ if ((e->size >= 2) && (e->data[0] == 0x00) && (e->data[1] == 0x1b)) {
+ if (!strncasecmp (
+ exif_entry_get_value (em, value, sizeof(value)),
+ "Nikon", 5))
+ return EXIF_DATA_TYPE_MAKER_NOTE_OLYMPUS;
+ else
+ return EXIF_DATA_TYPE_MAKER_NOTE_PENTAX;
+ }
+
+ return EXIF_DATA_TYPE_MAKER_NOTE_NONE;
+}
+
+#define LOG_TOO_SMALL \
+exif_log (data->priv->log, EXIF_LOG_CODE_CORRUPT_DATA, "ExifData", \
+ _("Size of data too small to allow for EXIF data."));
+
void
-exif_data_load_data (ExifData *data, const unsigned char *d, unsigned int size)
+exif_data_load_data (ExifData *data, const unsigned char *d_orig,
+ unsigned int ds_orig)
{
- unsigned int l, len = size;
+ unsigned int l;
ExifLong offset;
ExifShort n;
+ const unsigned char *d = d_orig;
+ unsigned int ds = ds_orig, len;
- if (!data)
- return;
- if (!d || !size)
- return;
+ if (!data || !data->priv || !d || !ds) return;
-#ifdef DEBUG
- printf ("Parsing %i byte(s) EXIF data...\n", size);
-#endif
+ exif_log (data->priv->log, EXIF_LOG_CODE_DEBUG, "ExifData",
+ "Parsing %i byte(s) EXIF data...\n", ds);
/*
* It can be that the data starts with the EXIF header. If it does
* not, search the EXIF marker.
*/
- if (size < 6) {
-#ifdef DEBUG
- printf ("Size too small.\n");
-#endif
+ if (ds < 6) {
+ LOG_TOO_SMALL;
return;
}
if (!memcmp (d, ExifHeader, 6)) {
-#ifdef DEBUG
- printf ("Found EXIF header.\n");
-#endif
+ exif_log (data->priv->log, EXIF_LOG_CODE_DEBUG, "ExifData",
+ "Found EXIF header.");
} else {
-#ifdef DEBUG
- printf ("Data begins with 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x "
- "0x%x...\n", d[0], d[1], d[2], d[3], d[4], d[5], d[6]);
-#endif
while (1) {
- while ((d[0] == 0xff) && size) {
+ while ((d[0] == 0xff) && ds) {
d++;
- size--;
+ ds--;
}
/* JPEG_MARKER_SOI */
if (d[0] == JPEG_MARKER_SOI) {
d++;
- size--;
+ ds--;
continue;
}
/* JPEG_MARKER_APP0 */
if (d[0] == JPEG_MARKER_APP0) {
d++;
- size--;
+ ds--;
l = (d[0] << 8) | d[1];
- if (l > size)
+ if (l > ds)
return;
d += l;
- size -= l;
+ ds -= l;
continue;
}
break;
/* Unknown marker or data. Give up. */
-#ifdef DEBUG
- printf ("EXIF marker not found.\n");
-#endif
+ exif_log (data->priv->log, EXIF_LOG_CODE_CORRUPT_DATA,
+ "ExifData", _("EXIF marker not found."));
return;
}
d++;
- size--;
- if (size < 2) {
-#ifdef DEBUG
- printf ("Size too small.\n");
-#endif
+ ds--;
+ if (ds < 2) {
+ LOG_TOO_SMALL;
return;
}
len = (d[0] << 8) | d[1];
-#ifdef DEBUG
- printf ("We have to deal with %i byte(s) of EXIF data.\n", len);
-#endif
+ exif_log (data->priv->log, EXIF_LOG_CODE_DEBUG, "ExifData",
+ "We have to deal with %i byte(s) of EXIF data.",
+ len);
d += 2;
- size -= 2;
+ ds -= 2;
}
/*
* Verify the exif header
* (offset 2, length 6).
*/
- if (size < 6) {
-#ifdef DEBUG
- printf ("Size too small.\n");
-#endif
+ if (ds < 6) {
+ LOG_TOO_SMALL;
return;
}
if (memcmp (d, ExifHeader, 6)) {
-#ifdef DEBUG
- printf ("EXIF header not found.\n");
-#endif
+ exif_log (data->priv->log, EXIF_LOG_CODE_CORRUPT_DATA,
+ "ExifData", _("EXIF header not found."));
return;
}
-#ifdef DEBUG
- printf ("Found EXIF header.\n");
-#endif
+ exif_log (data->priv->log, EXIF_LOG_CODE_DEBUG, "ExifData",
+ "Found EXIF header.");
/* Byte order (offset 6, length 2) */
- if (size < 12)
+ if (ds < 14)
return;
if (!memcmp (d + 6, "II", 2))
data->priv->order = EXIF_BYTE_ORDER_INTEL;
else if (!memcmp (d + 6, "MM", 2))
data->priv->order = EXIF_BYTE_ORDER_MOTOROLA;
- else
+ else {
+ exif_log (data->priv->log, EXIF_LOG_CODE_CORRUPT_DATA,
+ "ExifData", _("Unknown encoding."));
return;
+ }
/* Fixed value */
if (exif_get_short (d + 8, data->priv->order) != 0x002a)
/* IFD 0 offset */
offset = exif_get_long (d + 10, data->priv->order);
-#ifdef DEBUG
- printf ("IFD 0 at %i.\n", (int) offset);
-#endif
+ exif_log (data->priv->log, EXIF_LOG_CODE_DEBUG, "ExifData",
+ "IFD 0 at %i.", (int) offset);
- /* Parse the actual exif data (offset 14) */
+ /* Parse the actual exif data (usually offset 14 from start) */
exif_data_load_data_content (data, data->ifd[EXIF_IFD_0], d + 6,
- size - 6, offset);
+ ds - 6, offset);
/* IFD 1 offset */
+ if (offset + 6 + 2 > ds) {
+ return;
+ }
n = exif_get_short (d + 6 + offset, data->priv->order);
+ if (offset + 6 + 2 + 12 * n + 4 > ds) {
+ return;
+ }
offset = exif_get_long (d + 6 + offset + 2 + 12 * n, data->priv->order);
if (offset) {
-#ifdef DEBUG
- printf ("IFD 1 at %i.\n", (int) offset);
-#endif
+ exif_log (data->priv->log, EXIF_LOG_CODE_DEBUG, "ExifData",
+ "IFD 1 at %i.", (int) offset);
/* Sanity check. */
- if (offset > size - 6) {
-#ifdef DEBUG
- printf ("Bogus offset!\n");
-#endif
+ if (offset > ds - 6) {
+ exif_log (data->priv->log, EXIF_LOG_CODE_CORRUPT_DATA,
+ "ExifData", "Bogus offset.");
return;
}
exif_data_load_data_content (data, data->ifd[EXIF_IFD_1], d + 6,
- size - 6, offset);
+ ds - 6, offset);
+ }
+
+ /*
+ * If we got an EXIF_TAG_MAKER_NOTE, try to interpret it. Some
+ * cameras use pointers in the maker note tag that point to the
+ * space between IFDs. Here is the only place where we have access
+ * to that data.
+ */
+ switch (exif_data_get_type_maker_note (data)) {
+ case EXIF_DATA_TYPE_MAKER_NOTE_OLYMPUS:
+ data->priv->md = exif_mnote_data_olympus_new (data->priv->mem);
+ break;
+ case EXIF_DATA_TYPE_MAKER_NOTE_PENTAX:
+ data->priv->md = exif_mnote_data_pentax_new (data->priv->mem);
+ break;
+ case EXIF_DATA_TYPE_MAKER_NOTE_CANON:
+ data->priv->md = exif_mnote_data_canon_new (data->priv->mem);
+ break;
+ default:
+ break;
+ }
+
+ /*
+ * If we are able to interpret the maker note, do so.
+ */
+ if (data->priv->md) {
+ exif_mnote_data_log (data->priv->md, data->priv->log);
+ exif_mnote_data_set_byte_order (data->priv->md,
+ data->priv->order);
+ exif_mnote_data_set_offset (data->priv->md,
+ data->priv->offset_mnote);
+ exif_mnote_data_load (data->priv->md, d, ds);
}
}
void
exif_data_save_data (ExifData *data, unsigned char **d, unsigned int *ds)
{
- if (!data)
- return;
- if (!d || !ds)
+ if (!data || !d || !ds)
return;
/* Header */
- *ds = 6;
- *d = malloc (sizeof (char) * *ds);
+ *ds = 14;
+ *d = exif_data_alloc (data, *ds);
+ if (!*d) return;
memcpy (*d, ExifHeader, 6);
/* Order (offset 6) */
- *ds += 2;
- *d = realloc (*d, sizeof (char) * *ds);
if (data->priv->order == EXIF_BYTE_ORDER_INTEL) {
memcpy (*d + 6, "II", 2);
} else {
}
/* Fixed value (2 bytes, offset 8) */
- *ds += 2;
- *d = realloc (*d, sizeof (char) * *ds);
exif_set_short (*d + 8, data->priv->order, 0x002a);
/*
* IFD 0 offset (4 bytes, offset 10).
* We will start 8 bytes after the
- * EXIF header (2 bytes for order, another 2 for the test, and
+ * EXIF header (2 bytes for order, another 2 for the test, and
* 4 bytes for the IFD 0 offset make 8 bytes together).
*/
- *ds += 4;
- *d = realloc (*d, sizeof (char) * *ds);
exif_set_long (*d + 10, data->priv->order, 8);
/* Now save IFD 0. IFD 1 will be saved automatically. */
-#ifdef DEBUG
- printf ("Saving IFDs...\n");
-#endif
+ exif_log (data->priv->log, EXIF_LOG_CODE_DEBUG, "ExifData",
+ "Saving IFDs...");
exif_data_save_data_content (data, data->ifd[EXIF_IFD_0], d, ds,
*ds - 6);
-
-#ifdef DEBUG
- printf ("Saved %i byte(s) EXIF data.\n", *ds);
-#endif
+ exif_log (data->priv->log, EXIF_LOG_CODE_DEBUG, "ExifData",
+ "Saved %i byte(s) EXIF data.", *ds);
}
ExifData *
exif_data_new_from_file (const char *path)
{
- FILE *f;
- unsigned int size;
- unsigned char *data;
ExifData *edata;
- int marker, ll, lh;
-
- f = fopen (path, "rb");
- if (!f)
- return (NULL);
-
- while (1) {
- while ((marker = fgetc (f)) == 0xff);
-
- /* JPEG_MARKER_SOI */
- if (marker == JPEG_MARKER_SOI)
- continue;
-
- /* JPEG_MARKER_APP0 */
- if (marker == JPEG_MARKER_APP0) {
- lh = fgetc (f);
- ll = fgetc (f);
- size = (lh << 8) | ll;
- if (fseek (f, size - 2, SEEK_CUR) < 0)
- return (NULL);
- continue;
- }
+ ExifLoader *loader;
- /* JPEG_MARKER_APP1 */
- if (marker == JPEG_MARKER_APP1)
- break;
-
- /* Unknown marker or data. Give up. */
- return (NULL);
- }
-
- /* EXIF data found. Allocate the necessary memory and read the data. */
- lh = fgetc (f);
- ll = fgetc (f);
- size = (lh << 8) | ll;
- data = malloc (sizeof (char) * size);
- if (!data)
- return (NULL);
- if (fread (data, 1, size, f) != size) {
- free (data);
- return (NULL);
- }
-
- edata = exif_data_new_from_data (data, size);
- free (data);
-
- fclose (f);
+ loader = exif_loader_new ();
+ exif_loader_write_file (loader, path);
+ edata = exif_loader_get_data (loader);
+ exif_loader_unref (loader);
return (edata);
}
void
exif_data_unref (ExifData *data)
{
- if (!data)
- return;
+ if (!data) return;
data->priv->ref_count--;
- if (!data->priv->ref_count)
- exif_data_free (data);
+ if (!data->priv->ref_count) exif_data_free (data);
}
void
exif_data_free (ExifData *data)
{
unsigned int i;
+ ExifMem *mem = (data && data->priv) ? data->priv->mem : NULL;
- if (!data)
- return;
+ if (!data) return;
for (i = 0; i < EXIF_IFD_COUNT; i++) {
if (data->ifd[i]) {
data->ifd[i] = NULL;
}
}
+
if (data->data) {
- free (data->data);
+ exif_mem_free (mem, data->data);
data->data = NULL;
}
+
if (data->priv) {
- free (data->priv);
- data->priv = NULL;
+ if (data->priv->log) {
+ exif_log_unref (data->priv->log);
+ data->priv->log = NULL;
+ }
+ if (data->priv->md) {
+ exif_mnote_data_unref (data->priv->md);
+ data->priv->md = NULL;
+ }
+ exif_mem_free (mem, data->priv);
+ exif_mem_free (mem, data);
}
- free (data);
+
+ exif_mem_unref (mem);
}
void
entry_set_byte_order (ExifEntry *e, void *data)
{
ByteOrderChangeData *d = data;
- unsigned int i;
- ExifShort s;
- ExifLong l;
- ExifSLong sl;
- ExifRational r;
- ExifSRational sr;
if (!e)
return;
- switch (e->format) {
- case EXIF_FORMAT_SHORT:
- for (i = 0; i < e->components; i++) {
- s = exif_get_short (e->data +
- (i * exif_format_get_size (e->format)),
- d->old);
- exif_set_short (e->data +
- (i * exif_format_get_size (e->format)),
- d->new, s);
- }
- break;
- case EXIF_FORMAT_LONG:
- for (i = 0; i < e->components; i++) {
- l = exif_get_long (e->data +
- (i * exif_format_get_size (e->format)),
- d->old);
- exif_set_long (e->data +
- (i * exif_format_get_size (e->format)),
- d->new, l);
- }
- break;
- case EXIF_FORMAT_RATIONAL:
- for (i = 0; i < e->components; i++) {
- r = exif_get_rational (e->data +
- (i * exif_format_get_size (e->format)),
- d->old);
- exif_set_rational (e->data +
- (i * exif_format_get_size (e->format)),
- d->new, r);
- }
- break;
- case EXIF_FORMAT_SLONG:
- for (i = 0; i < e->components; i++) {
- sl = exif_get_slong (e->data +
- (i * exif_format_get_size (e->format)),
- d->old);
- exif_set_slong (e->data +
- (i * exif_format_get_size (e->format)),
- d->new, sl);
- }
- break;
- case EXIF_FORMAT_SRATIONAL:
- for (i = 0; i < e->components; i++) {
- sr = exif_get_srational (e->data +
- (i * exif_format_get_size (e->format)),
- d->old);
- exif_set_srational (e->data +
- (i * exif_format_get_size (e->format)),
- d->new, sr);
- }
- break;
- case EXIF_FORMAT_UNDEFINED:
- case EXIF_FORMAT_BYTE:
- case EXIF_FORMAT_ASCII:
- default:
- /* Nothing here. */
- break;
- }
+ exif_array_set_byte_order (e->format, e->data, e->components, d->old, d->new);
}
static void
d.new = order;
exif_data_foreach_content (data, content_set_byte_order, &d);
data->priv->order = order;
+ if (data->priv->md)
+ exif_mnote_data_set_byte_order (data->priv->md, order);
+}
+
+void
+exif_data_log (ExifData *data, ExifLog *log)
+{
+ unsigned int i;
+
+ if (!data || !data->priv) return;
+ exif_log_unref (data->priv->log);
+ data->priv->log = log;
+ exif_log_ref (log);
+
+ for (i = 0; i < EXIF_IFD_COUNT; i++)
+ exif_content_log (data->ifd[i], log);
+}
+
+/* Used internally within libexif */
+ExifLog *exif_data_get_log (ExifData *);
+ExifLog *
+exif_data_get_log (ExifData *data)
+{
+ if (!data || !data->priv) return NULL;
+ return data->priv->log;
}
projects / platform / upstream / libexif.git / blobdiff