Index: libexif/sources/libexif/pentax/exif-mnote-data-pentax.c |
=================================================================== |
--- libexif/sources/libexif/pentax/exif-mnote-data-pentax.c (revision 0) |
+++ libexif/sources/libexif/pentax/exif-mnote-data-pentax.c (revision 0) |
@@ -0,0 +1,449 @@ |
+/* exif-mnote-data-pentax.c |
+ * |
+ * Copyright (c) 2002, 2003 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 "exif-mnote-data-pentax.h" |
+ |
+#include <stdlib.h> |
+#include <string.h> |
+#include <stdio.h> |
+ |
+#include <libexif/exif-byte-order.h> |
+#include <libexif/exif-utils.h> |
+ |
+static void |
+exif_mnote_data_pentax_clear (ExifMnoteDataPentax *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_pentax_free (ExifMnoteData *n) |
+{ |
+ if (!n) return; |
+ |
+ exif_mnote_data_pentax_clear ((ExifMnoteDataPentax *) n); |
+} |
+ |
+static char * |
+exif_mnote_data_pentax_get_value (ExifMnoteData *d, unsigned int i, char *val, unsigned int maxlen) |
+{ |
+ ExifMnoteDataPentax *n = (ExifMnoteDataPentax *) d; |
+ |
+ if (!n) return NULL; |
+ if (n->count <= i) return NULL; |
+ return mnote_pentax_entry_get_value (&n->entries[i], val, maxlen); |
+} |
+ |
+/** |
+ * @brief save the MnoteData from ne to buf |
+ * |
+ * @param ne extract the data from this structure |
+ * @param *buf write the mnoteData to this buffer (buffer will be allocated) |
+ * @param buf_size the final size of the buffer |
+ */ |
+static void |
+exif_mnote_data_pentax_save (ExifMnoteData *ne, |
+ unsigned char **buf, unsigned int *buf_size) |
+{ |
+ ExifMnoteDataPentax *n = (ExifMnoteDataPentax *) ne; |
+ size_t i, |
+ base = 0, /* internal MakerNote tag number offset */ |
+ o2 = 4 + 2; /* offset to first tag entry, past header */ |
+ size_t datao = n->offset; /* this MakerNote style uses offsets |
+ based on main IFD, not makernote IFD */ |
+ |
+ if (!n || !buf || !buf_size) return; |
+ |
+ /* |
+ * Allocate enough memory for header, the number of entries, entries, |
+ * and next IFD pointer |
+ */ |
+ *buf_size = o2 + 2 + n->count * 12 + 4; |
+ switch (n->version) { |
+ case casioV2: |
+ base = MNOTE_PENTAX2_TAG_BASE; |
+ *buf = exif_mem_alloc (ne->mem, *buf_size); |
+ if (!*buf) { |
+ EXIF_LOG_NO_MEMORY(ne->log, "ExifMnoteDataPentax", *buf_size); |
+ return; |
+ } |
+ /* Write the magic header */ |
+ strcpy ((char *)*buf, "QVC"); |
+ exif_set_short (*buf + 4, n->order, (ExifShort) 0); |
+ |
+ break; |
+ |
+ case pentaxV3: |
+ base = MNOTE_PENTAX2_TAG_BASE; |
+ *buf = exif_mem_alloc (ne->mem, *buf_size); |
+ if (!*buf) { |
+ EXIF_LOG_NO_MEMORY(ne->log, "ExifMnoteDataPentax", *buf_size); |
+ return; |
+ } |
+ |
+ /* Write the magic header */ |
+ strcpy ((char *)*buf, "AOC"); |
+ exif_set_short (*buf + 4, n->order, (ExifShort) ( |
+ (n->order == EXIF_BYTE_ORDER_INTEL) ? |
+ ('I' << 8) | 'I' : |
+ ('M' << 8) | 'M')); |
+ break; |
+ |
+ case pentaxV2: |
+ base = MNOTE_PENTAX2_TAG_BASE; |
+ *buf = exif_mem_alloc (ne->mem, *buf_size); |
+ if (!*buf) { |
+ EXIF_LOG_NO_MEMORY(ne->log, "ExifMnoteDataPentax", *buf_size); |
+ return; |
+ } |
+ |
+ /* Write the magic header */ |
+ strcpy ((char *)*buf, "AOC"); |
+ exif_set_short (*buf + 4, n->order, (ExifShort) 0); |
+ break; |
+ |
+ case pentaxV1: |
+ /* It looks like this format doesn't have a magic header as |
+ * such, just has a fixed number of entries equal to 0x001b */ |
+ *buf_size -= 6; |
+ o2 -= 6; |
+ *buf = exif_mem_alloc (ne->mem, *buf_size); |
+ if (!*buf) { |
+ EXIF_LOG_NO_MEMORY(ne->log, "ExifMnoteDataPentax", *buf_size); |
+ return; |
+ } |
+ break; |
+ |
+ default: |
+ /* internal error */ |
+ return; |
+ } |
+ |
+ /* Write the number of entries. */ |
+ exif_set_short (*buf + o2, n->order, (ExifShort) n->count); |
+ o2 += 2; |
+ |
+ /* Save each entry */ |
+ for (i = 0; i < n->count; i++) { |
+ size_t doff; /* offset to current data portion of tag */ |
+ size_t s; |
+ unsigned char *t; |
+ size_t o = o2 + i * 12; /* current offset into output buffer */ |
+ exif_set_short (*buf + o + 0, n->order, |
+ (ExifShort) (n->entries[i].tag - base)); |
+ 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) { |
+ size_t ts = *buf_size + s; |
+ doff = *buf_size; |
+ t = exif_mem_realloc (ne->mem, *buf, |
+ sizeof (char) * ts); |
+ if (!t) { |
+ EXIF_LOG_NO_MEMORY(ne->log, "ExifMnoteDataPentax", ts); |
+ return; |
+ } |
+ *buf = t; |
+ *buf_size = ts; |
+ exif_set_long (*buf + o, n->order, datao + doff); |
+ } else |
+ doff = o; |
+ |
+ /* Write the data. */ |
+ if (n->entries[i].data) { |
+ memcpy (*buf + doff, n->entries[i].data, s); |
+ } else { |
+ /* Most certainly damaged input file */ |
+ memset (*buf + doff, 0, s); |
+ } |
+ } |
+ |
+ /* Sanity check the buffer size */ |
+ if (*buf_size < (o2 + n->count * 12 + 4)) { |
+ exif_log (ne->log, EXIF_LOG_CODE_CORRUPT_DATA, "ExifMnoteDataPentax", |
+ "Buffer overflow"); |
+ } |
+ |
+ /* Reset next IFD pointer */ |
+ exif_set_long (*buf + o2 + n->count * 12, n->order, 0); |
+} |
+ |
+static void |
+exif_mnote_data_pentax_load (ExifMnoteData *en, |
+ const unsigned char *buf, unsigned int buf_size) |
+{ |
+ ExifMnoteDataPentax *n = (ExifMnoteDataPentax *) en; |
+ size_t i, tcount, o, datao, base = 0; |
+ ExifShort c; |
+ |
+ if (!n || !buf || !buf_size) { |
+ exif_log (en->log, EXIF_LOG_CODE_CORRUPT_DATA, |
+ "ExifMnoteDataPentax", "Short MakerNote"); |
+ return; |
+ } |
+ datao = 6 + n->offset; |
+ if ((datao + 8 < datao) || (datao + 8 < 8) || (datao + 8 > buf_size)) { |
+ exif_log (en->log, EXIF_LOG_CODE_CORRUPT_DATA, |
+ "ExifMnoteDataPentax", "Short MakerNote"); |
+ return; |
+ } |
+ |
+ /* Detect variant of Pentax/Casio MakerNote found */ |
+ if (!memcmp(buf + datao, "AOC", 4)) { |
+ if ((buf[datao + 4] == 'I') && (buf[datao + 5] == 'I')) { |
+ n->version = pentaxV3; |
+ n->order = EXIF_BYTE_ORDER_INTEL; |
+ } else if ((buf[datao + 4] == 'M') && (buf[datao + 5] == 'M')) { |
+ n->version = pentaxV3; |
+ n->order = EXIF_BYTE_ORDER_MOTOROLA; |
+ } else { |
+ /* Uses Casio v2 tags */ |
+ n->version = pentaxV2; |
+ } |
+ exif_log (en->log, EXIF_LOG_CODE_DEBUG, "ExifMnoteDataPentax", |
+ "Parsing Pentax maker note v%d...", (int)n->version); |
+ datao += 4 + 2; |
+ base = MNOTE_PENTAX2_TAG_BASE; |
+ } else if (!memcmp(buf + datao, "QVC", 4)) { |
+ exif_log (en->log, EXIF_LOG_CODE_DEBUG, "ExifMnoteDataPentax", |
+ "Parsing Casio maker note v2..."); |
+ n->version = casioV2; |
+ base = MNOTE_CASIO2_TAG_BASE; |
+ datao += 4 + 2; |
+ } else { |
+ /* probably assert(!memcmp(buf + datao, "\x00\x1b", 2)) */ |
+ exif_log (en->log, EXIF_LOG_CODE_DEBUG, "ExifMnoteDataPentax", |
+ "Parsing Pentax maker note v1..."); |
+ n->version = pentaxV1; |
+ } |
+ |
+ /* Read the number of tags */ |
+ c = exif_get_short (buf + datao, n->order); |
+ datao += 2; |
+ |
+ /* Remove any old entries */ |
+ exif_mnote_data_pentax_clear (n); |
+ |
+ /* Reserve enough space for all the possible MakerNote tags */ |
+ n->entries = exif_mem_alloc (en->mem, sizeof (MnotePentaxEntry) * c); |
+ if (!n->entries) { |
+ EXIF_LOG_NO_MEMORY(en->log, "ExifMnoteDataPentax", sizeof (MnotePentaxEntry) * 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, |
+ "ExifMnoteDataPentax", "Short MakerNote"); |
+ break; |
+ } |
+ |
+ n->entries[tcount].tag = exif_get_short (buf + o + 0, n->order) + base; |
+ 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, "ExifMnotePentax", |
+ "Loading entry 0x%x ('%s')...", n->entries[tcount].tag, |
+ mnote_pentax_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; |
+ if ((dataofs + s < dataofs) || (dataofs + s < s) || |
+ (dataofs + s > buf_size)) { |
+ exif_log (en->log, EXIF_LOG_CODE_DEBUG, |
+ "ExifMnoteDataPentax", "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, "ExifMnoteDataPentax", 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_pentax_count (ExifMnoteData *n) |
+{ |
+ return n ? ((ExifMnoteDataPentax *) n)->count : 0; |
+} |
+ |
+static unsigned int |
+exif_mnote_data_pentax_get_id (ExifMnoteData *d, unsigned int n) |
+{ |
+ ExifMnoteDataPentax *note = (ExifMnoteDataPentax *) d; |
+ |
+ if (!note) return 0; |
+ if (note->count <= n) return 0; |
+ return note->entries[n].tag; |
+} |
+ |
+static const char * |
+exif_mnote_data_pentax_get_name (ExifMnoteData *d, unsigned int n) |
+{ |
+ ExifMnoteDataPentax *note = (ExifMnoteDataPentax *) d; |
+ |
+ if (!note) return NULL; |
+ if (note->count <= n) return NULL; |
+ return mnote_pentax_tag_get_name (note->entries[n].tag); |
+} |
+ |
+static const char * |
+exif_mnote_data_pentax_get_title (ExifMnoteData *d, unsigned int n) |
+{ |
+ ExifMnoteDataPentax *note = (ExifMnoteDataPentax *) d; |
+ |
+ if (!note) return NULL; |
+ if (note->count <= n) return NULL; |
+ return mnote_pentax_tag_get_title (note->entries[n].tag); |
+} |
+ |
+static const char * |
+exif_mnote_data_pentax_get_description (ExifMnoteData *d, unsigned int n) |
+{ |
+ ExifMnoteDataPentax *note = (ExifMnoteDataPentax *) d; |
+ |
+ if (!note) return NULL; |
+ if (note->count <= n) return NULL; |
+ return mnote_pentax_tag_get_description (note->entries[n].tag); |
+} |
+ |
+static void |
+exif_mnote_data_pentax_set_offset (ExifMnoteData *d, unsigned int o) |
+{ |
+ if (d) ((ExifMnoteDataPentax *) d)->offset = o; |
+} |
+ |
+static void |
+exif_mnote_data_pentax_set_byte_order (ExifMnoteData *d, ExifByteOrder o) |
+{ |
+ ExifByteOrder o_orig; |
+ ExifMnoteDataPentax *n = (ExifMnoteDataPentax *) 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); |
+ } |
+} |
+ |
+int |
+exif_mnote_data_pentax_identify (const ExifData *ed, const ExifEntry *e) |
+{ |
+ if ((e->size >= 8) && !memcmp (e->data, "AOC", 4)) { |
+ if (((e->data[4] == 'I') && (e->data[5] == 'I')) || |
+ ((e->data[4] == 'M') && (e->data[5] == 'M'))) |
+ return pentaxV3; |
+ else |
+ /* Uses Casio v2 tags */ |
+ return pentaxV2; |
+ } |
+ |
+ if ((e->size >= 8) && !memcmp (e->data, "QVC", 4)) |
+ return casioV2; |
+ |
+ /* This isn't a very robust test, so make sure it's done last */ |
+ /* Maybe we should additionally check for a make of Asahi or Pentax */ |
+ if ((e->size >= 2) && (e->data[0] == 0x00) && (e->data[1] == 0x1b)) |
+ return pentaxV1; |
+ |
+ return 0; |
+} |
+ |
+ExifMnoteData * |
+exif_mnote_data_pentax_new (ExifMem *mem) |
+{ |
+ ExifMnoteData *d; |
+ |
+ if (!mem) return NULL; |
+ |
+ d = exif_mem_alloc (mem, sizeof (ExifMnoteDataPentax)); |
+ if (!d) return NULL; |
+ |
+ exif_mnote_data_construct (d, mem); |
+ |
+ /* Set up function pointers */ |
+ d->methods.free = exif_mnote_data_pentax_free; |
+ d->methods.set_byte_order = exif_mnote_data_pentax_set_byte_order; |
+ d->methods.set_offset = exif_mnote_data_pentax_set_offset; |
+ d->methods.load = exif_mnote_data_pentax_load; |
+ d->methods.save = exif_mnote_data_pentax_save; |
+ d->methods.count = exif_mnote_data_pentax_count; |
+ d->methods.get_id = exif_mnote_data_pentax_get_id; |
+ d->methods.get_name = exif_mnote_data_pentax_get_name; |
+ d->methods.get_title = exif_mnote_data_pentax_get_title; |
+ d->methods.get_description = exif_mnote_data_pentax_get_description; |
+ d->methods.get_value = exif_mnote_data_pentax_get_value; |
+ |
+ return d; |
+} |
Property changes on: libexif/sources/libexif/pentax/exif-mnote-data-pentax.c |
___________________________________________________________________ |
Added: svn:eol-style |
+ LF |