Index: libexif/sources/libexif/fuji/exif-mnote-data-fuji.c |
=================================================================== |
--- libexif/sources/libexif/fuji/exif-mnote-data-fuji.c (revision 0) |
+++ libexif/sources/libexif/fuji/exif-mnote-data-fuji.c (revision 0) |
@@ -0,0 +1,349 @@ |
+/* exif-mnote-data-fuji.c |
+ * |
+ * Copyright (c) 2002 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 <stdlib.h> |
+#include <string.h> |
+ |
+ |
+#include <config.h> |
+#include <libexif/exif-byte-order.h> |
+#include <libexif/exif-utils.h> |
+ |
+#include "exif-mnote-data-fuji.h" |
+ |
+struct _MNoteFujiDataPrivate { |
+ ExifByteOrder order; |
+}; |
+ |
+static void |
+exif_mnote_data_fuji_clear (ExifMnoteDataFuji *n) |
+{ |
+ ExifMnoteData *d = (ExifMnoteData *) n; |
+ unsigned int i; |
+ |
+ if (!n) return; |
+ |
+ if (n->entries) { |
+ for (i = 0; i < n->count; i++) |
+ if (n->entries[i].data) { |
+ exif_mem_free (d->mem, n->entries[i].data); |
+ n->entries[i].data = NULL; |
+ } |
+ exif_mem_free (d->mem, n->entries); |
+ n->entries = NULL; |
+ n->count = 0; |
+ } |
+} |
+ |
+static void |
+exif_mnote_data_fuji_free (ExifMnoteData *n) |
+{ |
+ if (!n) return; |
+ |
+ exif_mnote_data_fuji_clear ((ExifMnoteDataFuji *) n); |
+} |
+ |
+static char * |
+exif_mnote_data_fuji_get_value (ExifMnoteData *d, unsigned int i, char *val, unsigned int maxlen) |
+{ |
+ ExifMnoteDataFuji *n = (ExifMnoteDataFuji *) d; |
+ |
+ if (!d || !val) return NULL; |
+ if (i > n->count -1) return NULL; |
+/* |
+ exif_log (d->log, EXIF_LOG_CODE_DEBUG, "ExifMnoteDataFuji", |
+ "Querying value for tag '%s'...", |
+ mnote_fuji_tag_get_name (n->entries[i].tag)); |
+*/ |
+ return mnote_fuji_entry_get_value (&n->entries[i], val, maxlen); |
+} |
+ |
+static void |
+exif_mnote_data_fuji_save (ExifMnoteData *ne, unsigned char **buf, |
+ unsigned int *buf_size) |
+{ |
+ ExifMnoteDataFuji *n = (ExifMnoteDataFuji *) ne; |
+ size_t i, o, s, doff; |
+ unsigned char *t; |
+ size_t ts; |
+ |
+ if (!n || !buf || !buf_size) return; |
+ |
+ /* |
+ * Allocate enough memory for all entries and the number |
+ * of entries. |
+ */ |
+ *buf_size = 8 + 4 + 2 + n->count * 12 + 4; |
+ *buf = exif_mem_alloc (ne->mem, *buf_size); |
+ if (!*buf) { |
+ *buf_size = 0; |
+ return; |
+ } |
+ |
+ /* |
+ * Header: "FUJIFILM" and 4 bytes offset to the first entry. |
+ * As the first entry will start right thereafter, the offset is 12. |
+ */ |
+ memcpy (*buf, "FUJIFILM", 8); |
+ exif_set_long (*buf + 8, n->order, 12); |
+ |
+ /* Save the number of entries */ |
+ exif_set_short (*buf + 8 + 4, n->order, (ExifShort) n->count); |
+ |
+ /* Save each entry */ |
+ for (i = 0; i < n->count; i++) { |
+ o = 8 + 4 + 2 + i * 12; |
+ exif_set_short (*buf + o + 0, n->order, (ExifShort) n->entries[i].tag); |
+ exif_set_short (*buf + o + 2, n->order, (ExifShort) n->entries[i].format); |
+ exif_set_long (*buf + o + 4, n->order, n->entries[i].components); |
+ o += 8; |
+ s = exif_format_get_size (n->entries[i].format) * |
+ n->entries[i].components; |
+ if (s > 65536) { |
+ /* Corrupt data: EXIF data size is limited to the |
+ * maximum size of a JPEG segment (64 kb). |
+ */ |
+ continue; |
+ } |
+ if (s > 4) { |
+ ts = *buf_size + s; |
+ |
+ /* Ensure even offsets. Set padding bytes to 0. */ |
+ if (s & 1) ts += 1; |
+ t = exif_mem_realloc (ne->mem, *buf, ts); |
+ if (!t) { |
+ return; |
+ } |
+ *buf = t; |
+ *buf_size = ts; |
+ doff = *buf_size - s; |
+ if (s & 1) { doff--; *(*buf + *buf_size - 1) = '\0'; } |
+ exif_set_long (*buf + o, n->order, doff); |
+ } else |
+ doff = o; |
+ |
+ /* |
+ * Write the data. Fill unneeded bytes with 0. Do not |
+ * crash if data is NULL. |
+ */ |
+ if (!n->entries[i].data) memset (*buf + doff, 0, s); |
+ else memcpy (*buf + doff, n->entries[i].data, s); |
+ } |
+} |
+ |
+static void |
+exif_mnote_data_fuji_load (ExifMnoteData *en, |
+ const unsigned char *buf, unsigned int buf_size) |
+{ |
+ ExifMnoteDataFuji *n = (ExifMnoteDataFuji*) en; |
+ ExifLong c; |
+ size_t i, tcount, o, datao; |
+ |
+ if (!n || !buf || !buf_size) { |
+ exif_log (en->log, EXIF_LOG_CODE_CORRUPT_DATA, |
+ "ExifMnoteDataFuji", "Short MakerNote"); |
+ return; |
+ } |
+ datao = 6 + n->offset; |
+ if ((datao + 12 < datao) || (datao + 12 < 12) || (datao + 12 > buf_size)) { |
+ exif_log (en->log, EXIF_LOG_CODE_CORRUPT_DATA, |
+ "ExifMnoteDataFuji", "Short MakerNote"); |
+ return; |
+ } |
+ |
+ n->order = EXIF_BYTE_ORDER_INTEL; |
+ datao += exif_get_long (buf + datao + 8, EXIF_BYTE_ORDER_INTEL); |
+ if ((datao + 2 < datao) || (datao + 2 < 2) || |
+ (datao + 2 > buf_size)) { |
+ exif_log (en->log, EXIF_LOG_CODE_CORRUPT_DATA, |
+ "ExifMnoteDataFuji", "Short MakerNote"); |
+ return; |
+ } |
+ |
+ /* Read the number of tags */ |
+ c = exif_get_short (buf + datao, EXIF_BYTE_ORDER_INTEL); |
+ datao += 2; |
+ |
+ /* Remove any old entries */ |
+ exif_mnote_data_fuji_clear (n); |
+ |
+ /* Reserve enough space for all the possible MakerNote tags */ |
+ n->entries = exif_mem_alloc (en->mem, sizeof (MnoteFujiEntry) * c); |
+ if (!n->entries) { |
+ EXIF_LOG_NO_MEMORY(en->log, "ExifMnoteDataFuji", sizeof (MnoteFujiEntry) * c); |
+ return; |
+ } |
+ |
+ /* Parse all c entries, storing ones that are successfully parsed */ |
+ tcount = 0; |
+ for (i = c, o = datao; i; --i, o += 12) { |
+ size_t s; |
+ if ((o + 12 < o) || (o + 12 < 12) || (o + 12 > buf_size)) { |
+ exif_log (en->log, EXIF_LOG_CODE_CORRUPT_DATA, |
+ "ExifMnoteDataFuji", "Short MakerNote"); |
+ break; |
+ } |
+ |
+ n->entries[tcount].tag = exif_get_short (buf + o, n->order); |
+ n->entries[tcount].format = exif_get_short (buf + o + 2, n->order); |
+ n->entries[tcount].components = exif_get_long (buf + o + 4, n->order); |
+ n->entries[tcount].order = n->order; |
+ |
+ exif_log (en->log, EXIF_LOG_CODE_DEBUG, "ExifMnoteDataFuji", |
+ "Loading entry 0x%x ('%s')...", n->entries[tcount].tag, |
+ mnote_fuji_tag_get_name (n->entries[tcount].tag)); |
+ |
+ /* |
+ * Size? If bigger than 4 bytes, the actual data is not |
+ * in the entry but somewhere else (offset). |
+ */ |
+ s = exif_format_get_size (n->entries[tcount].format) * n->entries[tcount].components; |
+ n->entries[tcount].size = s; |
+ if (s) { |
+ size_t dataofs = o + 8; |
+ if (s > 4) |
+ /* The data in this case is merely a pointer */ |
+ dataofs = exif_get_long (buf + dataofs, n->order) + 6 + n->offset; |
+ if ((dataofs + s < dataofs) || (dataofs + s < s) || |
+ (dataofs + s >= buf_size)) { |
+ exif_log (en->log, EXIF_LOG_CODE_CORRUPT_DATA, |
+ "ExifMnoteDataFuji", "Tag data past end of " |
+ "buffer (%u >= %u)", dataofs + s, buf_size); |
+ continue; |
+ } |
+ |
+ n->entries[tcount].data = exif_mem_alloc (en->mem, s); |
+ if (!n->entries[tcount].data) { |
+ EXIF_LOG_NO_MEMORY(en->log, "ExifMnoteDataFuji", s); |
+ continue; |
+ } |
+ memcpy (n->entries[tcount].data, buf + dataofs, s); |
+ } |
+ |
+ /* Tag was successfully parsed */ |
+ ++tcount; |
+ } |
+ /* Store the count of successfully parsed tags */ |
+ n->count = tcount; |
+} |
+ |
+static unsigned int |
+exif_mnote_data_fuji_count (ExifMnoteData *n) |
+{ |
+ return n ? ((ExifMnoteDataFuji *) n)->count : 0; |
+} |
+ |
+static unsigned int |
+exif_mnote_data_fuji_get_id (ExifMnoteData *d, unsigned int n) |
+{ |
+ ExifMnoteDataFuji *note = (ExifMnoteDataFuji *) d; |
+ |
+ if (!note) return 0; |
+ if (note->count <= n) return 0; |
+ return note->entries[n].tag; |
+} |
+ |
+static const char * |
+exif_mnote_data_fuji_get_name (ExifMnoteData *d, unsigned int i) |
+{ |
+ ExifMnoteDataFuji *n = (ExifMnoteDataFuji *) d; |
+ |
+ if (!n) return NULL; |
+ if (i >= n->count) return NULL; |
+ return mnote_fuji_tag_get_name (n->entries[i].tag); |
+} |
+ |
+static const char * |
+exif_mnote_data_fuji_get_title (ExifMnoteData *d, unsigned int i) |
+{ |
+ ExifMnoteDataFuji *n = (ExifMnoteDataFuji *) d; |
+ |
+ if (!n) return NULL; |
+ if (i >= n->count) return NULL; |
+ return mnote_fuji_tag_get_title (n->entries[i].tag); |
+} |
+ |
+static const char * |
+exif_mnote_data_fuji_get_description (ExifMnoteData *d, unsigned int i) |
+{ |
+ ExifMnoteDataFuji *n = (ExifMnoteDataFuji *) d; |
+ |
+ if (!n) return NULL; |
+ if (i >= n->count) return NULL; |
+ return mnote_fuji_tag_get_description (n->entries[i].tag); |
+} |
+ |
+static void |
+exif_mnote_data_fuji_set_byte_order (ExifMnoteData *d, ExifByteOrder o) |
+{ |
+ ExifByteOrder o_orig; |
+ ExifMnoteDataFuji *n = (ExifMnoteDataFuji *) d; |
+ unsigned int i; |
+ |
+ if (!n) return; |
+ |
+ o_orig = n->order; |
+ n->order = o; |
+ for (i = 0; i < n->count; i++) { |
+ n->entries[i].order = o; |
+ exif_array_set_byte_order (n->entries[i].format, n->entries[i].data, |
+ n->entries[i].components, o_orig, o); |
+ } |
+} |
+ |
+static void |
+exif_mnote_data_fuji_set_offset (ExifMnoteData *n, unsigned int o) |
+{ |
+ if (n) ((ExifMnoteDataFuji *) n)->offset = o; |
+} |
+ |
+int |
+exif_mnote_data_fuji_identify (const ExifData *ed, const ExifEntry *e) |
+{ |
+ return ((e->size >= 12) && !memcmp (e->data, "FUJIFILM", 8)); |
+} |
+ |
+ExifMnoteData * |
+exif_mnote_data_fuji_new (ExifMem *mem) |
+{ |
+ ExifMnoteData *d; |
+ |
+ if (!mem) return NULL; |
+ |
+ d = exif_mem_alloc (mem, sizeof (ExifMnoteDataFuji)); |
+ if (!d) return NULL; |
+ |
+ exif_mnote_data_construct (d, mem); |
+ |
+ /* Set up function pointers */ |
+ d->methods.free = exif_mnote_data_fuji_free; |
+ d->methods.set_byte_order = exif_mnote_data_fuji_set_byte_order; |
+ d->methods.set_offset = exif_mnote_data_fuji_set_offset; |
+ d->methods.load = exif_mnote_data_fuji_load; |
+ d->methods.save = exif_mnote_data_fuji_save; |
+ d->methods.count = exif_mnote_data_fuji_count; |
+ d->methods.get_id = exif_mnote_data_fuji_get_id; |
+ d->methods.get_name = exif_mnote_data_fuji_get_name; |
+ d->methods.get_title = exif_mnote_data_fuji_get_title; |
+ d->methods.get_description = exif_mnote_data_fuji_get_description; |
+ d->methods.get_value = exif_mnote_data_fuji_get_value; |
+ |
+ return d; |
+} |
Property changes on: libexif/sources/libexif/fuji/exif-mnote-data-fuji.c |
___________________________________________________________________ |
Added: svn:eol-style |
+ LF |