| Index: libexif/sources/libexif/olympus/exif-mnote-data-olympus.c
|
| ===================================================================
|
| --- libexif/sources/libexif/olympus/exif-mnote-data-olympus.c (revision 0)
|
| +++ libexif/sources/libexif/olympus/exif-mnote-data-olympus.c (revision 0)
|
| @@ -0,0 +1,659 @@
|
| +/* exif-mnote-data-olympus.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-olympus.h"
|
| +
|
| +#include <stdlib.h>
|
| +#include <string.h>
|
| +#include <stdio.h>
|
| +
|
| +#include <libexif/exif-utils.h>
|
| +#include <libexif/exif-data.h>
|
| +
|
| +#define DEBUG
|
| +
|
| +/* Uncomment this to fix a problem with Sanyo MakerNotes. It's probably best
|
| + * not to in most cases because it seems to only affect the thumbnail tag
|
| + * which is duplicated in IFD 1, and fixing the offset could actually cause
|
| + * problems with other software that expects the broken form.
|
| + */
|
| +/*#define EXIF_OVERCOME_SANYO_OFFSET_BUG */
|
| +
|
| +static enum OlympusVersion
|
| +exif_mnote_data_olympus_identify_variant (const unsigned char *buf,
|
| + unsigned int buf_size);
|
| +
|
| +
|
| +static void
|
| +exif_mnote_data_olympus_clear (ExifMnoteDataOlympus *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_olympus_free (ExifMnoteData *n)
|
| +{
|
| + if (!n) return;
|
| +
|
| + exif_mnote_data_olympus_clear ((ExifMnoteDataOlympus *) n);
|
| +}
|
| +
|
| +static char *
|
| +exif_mnote_data_olympus_get_value (ExifMnoteData *d, unsigned int i, char *val, unsigned int maxlen)
|
| +{
|
| + ExifMnoteDataOlympus *n = (ExifMnoteDataOlympus *) d;
|
| +
|
| + if (!d || !val) return NULL;
|
| + if (i > n->count -1) return NULL;
|
| +/*
|
| + exif_log (d->log, EXIF_LOG_CODE_DEBUG, "ExifMnoteDataOlympus",
|
| + "Querying value for tag '%s'...",
|
| + mnote_olympus_tag_get_name (n->entries[i].tag));
|
| +*/
|
| + return mnote_olympus_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 size of the buffer
|
| + */
|
| +static void
|
| +exif_mnote_data_olympus_save (ExifMnoteData *ne,
|
| + unsigned char **buf, unsigned int *buf_size)
|
| +{
|
| + ExifMnoteDataOlympus *n = (ExifMnoteDataOlympus *) ne;
|
| + size_t i, o, s, doff, base = 0, o2 = 6 + 2;
|
| + size_t datao = 0;
|
| + 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 = 6 + 2 + 2 + n->count * 12;
|
| + switch (n->version) {
|
| + case olympusV1:
|
| + case sanyoV1:
|
| + case epsonV1:
|
| + *buf = exif_mem_alloc (ne->mem, *buf_size);
|
| + if (!*buf) {
|
| + EXIF_LOG_NO_MEMORY(ne->log, "ExifMnoteDataOlympus", *buf_size);
|
| + return;
|
| + }
|
| +
|
| + /* Write the header and the number of entries. */
|
| + strcpy ((char *)*buf, n->version==sanyoV1?"SANYO":
|
| + (n->version==epsonV1?"EPSON":"OLYMP"));
|
| + exif_set_short (*buf + 6, n->order, (ExifShort) 1);
|
| + datao = n->offset;
|
| + break;
|
| +
|
| + case olympusV2:
|
| + *buf_size += 8-6 + 4;
|
| + *buf = exif_mem_alloc (ne->mem, *buf_size);
|
| + if (!*buf) {
|
| + EXIF_LOG_NO_MEMORY(ne->log, "ExifMnoteDataOlympus", *buf_size);
|
| + return;
|
| + }
|
| +
|
| + /* Write the header and the number of entries. */
|
| + strcpy ((char *)*buf, "OLYMPUS");
|
| + exif_set_short (*buf + 8, n->order, (ExifShort) (
|
| + (n->order == EXIF_BYTE_ORDER_INTEL) ?
|
| + ('I' << 8) | 'I' :
|
| + ('M' << 8) | 'M'));
|
| + exif_set_short (*buf + 10, n->order, (ExifShort) 3);
|
| + o2 += 4;
|
| + break;
|
| +
|
| + case nikonV1:
|
| + base = MNOTE_NIKON1_TAG_BASE;
|
| +
|
| + /* v1 has offsets based to main IFD, not makernote IFD */
|
| + datao += n->offset + 10;
|
| + /* subtract the size here, so the increment in the next case will not harm us */
|
| + *buf_size -= 8 + 2;
|
| + /* Fall through to nikonV2 handler */
|
| + case nikonV2:
|
| + /* Write out V0 files in V2 format */
|
| + case nikonV0:
|
| + *buf_size += 8 + 2;
|
| + *buf_size += 4; /* Next IFD pointer */
|
| + *buf = exif_mem_alloc (ne->mem, *buf_size);
|
| + if (!*buf) {
|
| + EXIF_LOG_NO_MEMORY(ne->log, "ExifMnoteDataOlympus", *buf_size);
|
| + return;
|
| + }
|
| +
|
| + /* Write the header and the number of entries. */
|
| + strcpy ((char *)*buf, "Nikon");
|
| + (*buf)[6] = n->version;
|
| +
|
| + if (n->version != nikonV1) {
|
| + exif_set_short (*buf + 10, n->order, (ExifShort) (
|
| + (n->order == EXIF_BYTE_ORDER_INTEL) ?
|
| + ('I' << 8) | 'I' :
|
| + ('M' << 8) | 'M'));
|
| + exif_set_short (*buf + 12, n->order, (ExifShort) 0x2A);
|
| + exif_set_long (*buf + 14, n->order, (ExifShort) 8);
|
| + o2 += 2 + 8;
|
| + }
|
| + datao -= 10;
|
| + /* Reset next IFD pointer */
|
| + exif_set_long (*buf + o2 + 2 + n->count * 12, n->order, 0);
|
| + break;
|
| +
|
| + default:
|
| + return;
|
| + }
|
| +
|
| + exif_set_short (*buf + o2, n->order, (ExifShort) n->count);
|
| + o2 += 2;
|
| +
|
| + /* Save each entry */
|
| + for (i = 0; i < n->count; i++) {
|
| + o = o2 + i * 12;
|
| + 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) {
|
| + doff = *buf_size;
|
| + ts = *buf_size + s;
|
| + t = exif_mem_realloc (ne->mem, *buf,
|
| + sizeof (char) * ts);
|
| + if (!t) {
|
| + EXIF_LOG_NO_MEMORY(ne->log, "ExifMnoteDataOlympus", 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);
|
| + }
|
| + }
|
| +}
|
| +
|
| +static void
|
| +exif_mnote_data_olympus_load (ExifMnoteData *en,
|
| + const unsigned char *buf, unsigned int buf_size)
|
| +{
|
| + ExifMnoteDataOlympus *n = (ExifMnoteDataOlympus *) en;
|
| + ExifShort c;
|
| + size_t i, tcount, o, o2, datao = 6, base = 0;
|
| +
|
| + if (!n || !buf || !buf_size) {
|
| + exif_log (en->log, EXIF_LOG_CODE_CORRUPT_DATA,
|
| + "ExifMnoteDataOlympus", "Short MakerNote");
|
| + return;
|
| + }
|
| + o2 = 6 + n->offset; /* Start of interesting data */
|
| + if ((o2 + 10 < o2) || (o2 + 10 < 10) || (o2 + 10 > buf_size)) {
|
| + exif_log (en->log, EXIF_LOG_CODE_CORRUPT_DATA,
|
| + "ExifMnoteDataOlympus", "Short MakerNote");
|
| + return;
|
| + }
|
| +
|
| + /*
|
| + * Olympus headers start with "OLYMP" and need to have at least
|
| + * a size of 22 bytes (6 for 'OLYMP', 2 other bytes, 2 for the
|
| + * number of entries, and 12 for one entry.
|
| + *
|
| + * Sanyo format is identical and uses identical tags except that
|
| + * header starts with "SANYO".
|
| + *
|
| + * Epson format is identical and uses identical tags except that
|
| + * header starts with "EPSON".
|
| + *
|
| + * Nikon headers start with "Nikon" (6 bytes including '\0'),
|
| + * version number (1 or 2).
|
| + *
|
| + * Version 1 continues with 0, 1, 0, number_of_tags,
|
| + * or just with number_of_tags (models D1H, D1X...).
|
| + *
|
| + * Version 2 continues with an unknown byte (0 or 10),
|
| + * two unknown bytes (0), "MM" or "II", another byte 0 and
|
| + * lastly 0x2A.
|
| + */
|
| + n->version = exif_mnote_data_olympus_identify_variant(buf+o2, buf_size-o2);
|
| + switch (n->version) {
|
| + case olympusV1:
|
| + case sanyoV1:
|
| + case epsonV1:
|
| + exif_log (en->log, EXIF_LOG_CODE_DEBUG, "ExifMnoteDataOlympus",
|
| + "Parsing Olympus/Sanyo/Epson maker note v1...");
|
| +
|
| + /* The number of entries is at position 8. */
|
| + if (buf[o2 + 6] == 1)
|
| + n->order = EXIF_BYTE_ORDER_INTEL;
|
| + else if (buf[o2 + 6 + 1] == 1)
|
| + n->order = EXIF_BYTE_ORDER_MOTOROLA;
|
| + o2 += 8;
|
| + if (o2 + 2 > buf_size) return;
|
| + c = exif_get_short (buf + o2, n->order);
|
| + if ((!(c & 0xFF)) && (c > 0x500)) {
|
| + if (n->order == EXIF_BYTE_ORDER_INTEL) {
|
| + n->order = EXIF_BYTE_ORDER_MOTOROLA;
|
| + } else {
|
| + n->order = EXIF_BYTE_ORDER_INTEL;
|
| + }
|
| + }
|
| + break;
|
| +
|
| + case olympusV2:
|
| + /* Olympus S760, S770 */
|
| + datao = o2;
|
| + o2 += 8;
|
| + exif_log (en->log, EXIF_LOG_CODE_DEBUG, "ExifMnoteDataOlympus",
|
| + "Parsing Olympus maker note v2 (0x%02x, %02x, %02x, %02x)...",
|
| + buf[o2], buf[o2 + 1], buf[o2 + 2], buf[o2 + 3]);
|
| +
|
| + if ((buf[o2] == 'I') && (buf[o2 + 1] == 'I'))
|
| + n->order = EXIF_BYTE_ORDER_INTEL;
|
| + else if ((buf[o2] == 'M') && (buf[o2 + 1] == 'M'))
|
| + n->order = EXIF_BYTE_ORDER_MOTOROLA;
|
| +
|
| + /* The number of entries is at position 8+4. */
|
| + o2 += 4;
|
| + break;
|
| +
|
| + case nikonV1:
|
| + o2 += 6;
|
| + if (o2 >= buf_size) return;
|
| + exif_log (en->log, EXIF_LOG_CODE_DEBUG, "ExifMnoteDataOlympus",
|
| + "Parsing Nikon maker note v1 (0x%02x, %02x, %02x, "
|
| + "%02x, %02x, %02x, %02x, %02x)...",
|
| + buf[o2 + 0], buf[o2 + 1], buf[o2 + 2], buf[o2 + 3],
|
| + buf[o2 + 4], buf[o2 + 5], buf[o2 + 6], buf[o2 + 7]);
|
| +
|
| + /* Skip version number */
|
| + o2 += 1;
|
| +
|
| + /* Skip an unknown byte (00 or 0A). */
|
| + o2 += 1;
|
| +
|
| + base = MNOTE_NIKON1_TAG_BASE;
|
| + /* Fix endianness, if needed */
|
| + if (o2 + 2 > buf_size) return;
|
| + c = exif_get_short (buf + o2, n->order);
|
| + if ((!(c & 0xFF)) && (c > 0x500)) {
|
| + if (n->order == EXIF_BYTE_ORDER_INTEL) {
|
| + n->order = EXIF_BYTE_ORDER_MOTOROLA;
|
| + } else {
|
| + n->order = EXIF_BYTE_ORDER_INTEL;
|
| + }
|
| + }
|
| + break;
|
| +
|
| + case nikonV2:
|
| + o2 += 6;
|
| + if (o2 >= buf_size) return;
|
| + exif_log (en->log, EXIF_LOG_CODE_DEBUG, "ExifMnoteDataOlympus",
|
| + "Parsing Nikon maker note v2 (0x%02x, %02x, %02x, "
|
| + "%02x, %02x, %02x, %02x, %02x)...",
|
| + buf[o2 + 0], buf[o2 + 1], buf[o2 + 2], buf[o2 + 3],
|
| + buf[o2 + 4], buf[o2 + 5], buf[o2 + 6], buf[o2 + 7]);
|
| +
|
| + /* Skip version number */
|
| + o2 += 1;
|
| +
|
| + /* Skip an unknown byte (00 or 0A). */
|
| + o2 += 1;
|
| +
|
| + /* Skip 2 unknown bytes (00 00). */
|
| + o2 += 2;
|
| +
|
| + /*
|
| + * Byte order. From here the data offset
|
| + * gets calculated.
|
| + */
|
| + datao = o2;
|
| + if (o2 >= buf_size) return;
|
| + if (!strncmp ((char *)&buf[o2], "II", 2))
|
| + n->order = EXIF_BYTE_ORDER_INTEL;
|
| + else if (!strncmp ((char *)&buf[o2], "MM", 2))
|
| + n->order = EXIF_BYTE_ORDER_MOTOROLA;
|
| + else {
|
| + exif_log (en->log, EXIF_LOG_CODE_DEBUG,
|
| + "ExifMnoteDataOlympus", "Unknown "
|
| + "byte order '%c%c'", buf[o2],
|
| + buf[o2 + 1]);
|
| + return;
|
| + }
|
| + o2 += 2;
|
| +
|
| + /* Skip 2 unknown bytes (00 2A). */
|
| + o2 += 2;
|
| +
|
| + /* Go to where the number of entries is. */
|
| + if (o2 + 4 > buf_size) return;
|
| + o2 = datao + exif_get_long (buf + o2, n->order);
|
| + break;
|
| +
|
| + case nikonV0:
|
| + exif_log (en->log, EXIF_LOG_CODE_DEBUG, "ExifMnoteDataOlympus",
|
| + "Parsing Nikon maker note v0 (0x%02x, %02x, %02x, "
|
| + "%02x, %02x, %02x, %02x, %02x)...",
|
| + buf[o2 + 0], buf[o2 + 1], buf[o2 + 2], buf[o2 + 3],
|
| + buf[o2 + 4], buf[o2 + 5], buf[o2 + 6], buf[o2 + 7]);
|
| + /* 00 1b is # of entries in Motorola order - the rest should also be in MM order */
|
| + n->order = EXIF_BYTE_ORDER_MOTOROLA;
|
| + break;
|
| +
|
| + default:
|
| + exif_log (en->log, EXIF_LOG_CODE_DEBUG, "ExifMnoteDataOlympus",
|
| + "Unknown Olympus variant %i.", n->version);
|
| + return;
|
| + }
|
| +
|
| + /* Sanity check the offset */
|
| + if ((o2 + 2 < o2) || (o2 + 2 < 2) || (o2 + 2 > buf_size)) {
|
| + exif_log (en->log, EXIF_LOG_CODE_CORRUPT_DATA,
|
| + "ExifMnoteOlympus", "Short MakerNote");
|
| + return;
|
| + }
|
| +
|
| + /* Read the number of tags */
|
| + c = exif_get_short (buf + o2, n->order);
|
| + o2 += 2;
|
| +
|
| + /* Remove any old entries */
|
| + exif_mnote_data_olympus_clear (n);
|
| +
|
| + /* Reserve enough space for all the possible MakerNote tags */
|
| + n->entries = exif_mem_alloc (en->mem, sizeof (MnoteOlympusEntry) * c);
|
| + if (!n->entries) {
|
| + EXIF_LOG_NO_MEMORY(en->log, "ExifMnoteOlympus", sizeof (MnoteOlympusEntry) * c);
|
| + return;
|
| + }
|
| +
|
| + /* Parse all c entries, storing ones that are successfully parsed */
|
| + tcount = 0;
|
| + for (i = c, o = o2; 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,
|
| + "ExifMnoteOlympus", "Short MakerNote");
|
| + break;
|
| + }
|
| +
|
| + n->entries[tcount].tag = exif_get_short (buf + o, 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, "ExifMnoteOlympus",
|
| + "Loading entry 0x%x ('%s')...", n->entries[tcount].tag,
|
| + mnote_olympus_tag_get_name (n->entries[tcount].tag));
|
| +/* exif_log (en->log, EXIF_LOG_CODE_DEBUG, "ExifMnoteOlympus",
|
| + "0x%x %d %ld*(%d)",
|
| + n->entries[tcount].tag,
|
| + n->entries[tcount].format,
|
| + n->entries[tcount].components,
|
| + (int)exif_format_get_size(n->entries[tcount].format)); */
|
| +
|
| + /*
|
| + * 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) + datao;
|
| +#ifdef EXIF_OVERCOME_SANYO_OFFSET_BUG
|
| + /* Some Sanyo models (e.g. VPC-C5, C40) suffer from a bug when
|
| + * writing the offset for the MNOTE_OLYMPUS_TAG_THUMBNAILIMAGE
|
| + * tag in its MakerNote. The offset is actually the absolute
|
| + * position in the file instead of the position within the IFD.
|
| + */
|
| + if (dataofs + s > buf_size && n->version == sanyoV1) {
|
| + /* fix pointer */
|
| + dataofs -= datao + 6;
|
| + exif_log (en->log, EXIF_LOG_CODE_DEBUG,
|
| + "ExifMnoteOlympus",
|
| + "Inconsistent thumbnail tag offset; attempting to recover");
|
| + }
|
| +#endif
|
| + }
|
| + if ((dataofs + s < dataofs) || (dataofs + s < s) ||
|
| + (dataofs + s > buf_size)) {
|
| + exif_log (en->log, EXIF_LOG_CODE_DEBUG,
|
| + "ExifMnoteOlympus",
|
| + "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, "ExifMnoteOlympus", 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_olympus_count (ExifMnoteData *n)
|
| +{
|
| + return n ? ((ExifMnoteDataOlympus *) n)->count : 0;
|
| +}
|
| +
|
| +static unsigned int
|
| +exif_mnote_data_olympus_get_id (ExifMnoteData *d, unsigned int n)
|
| +{
|
| + ExifMnoteDataOlympus *note = (ExifMnoteDataOlympus *) d;
|
| +
|
| + if (!note) return 0;
|
| + if (note->count <= n) return 0;
|
| + return note->entries[n].tag;
|
| +}
|
| +
|
| +static const char *
|
| +exif_mnote_data_olympus_get_name (ExifMnoteData *d, unsigned int i)
|
| +{
|
| + ExifMnoteDataOlympus *n = (ExifMnoteDataOlympus *) d;
|
| +
|
| + if (!n) return NULL;
|
| + if (i >= n->count) return NULL;
|
| + return mnote_olympus_tag_get_name (n->entries[i].tag);
|
| +}
|
| +
|
| +static const char *
|
| +exif_mnote_data_olympus_get_title (ExifMnoteData *d, unsigned int i)
|
| +{
|
| + ExifMnoteDataOlympus *n = (ExifMnoteDataOlympus *) d;
|
| +
|
| + if (!n) return NULL;
|
| + if (i >= n->count) return NULL;
|
| + return mnote_olympus_tag_get_title (n->entries[i].tag);
|
| +}
|
| +
|
| +static const char *
|
| +exif_mnote_data_olympus_get_description (ExifMnoteData *d, unsigned int i)
|
| +{
|
| + ExifMnoteDataOlympus *n = (ExifMnoteDataOlympus *) d;
|
| +
|
| + if (!n) return NULL;
|
| + if (i >= n->count) return NULL;
|
| + return mnote_olympus_tag_get_description (n->entries[i].tag);
|
| +}
|
| +
|
| +static void
|
| +exif_mnote_data_olympus_set_byte_order (ExifMnoteData *d, ExifByteOrder o)
|
| +{
|
| + ExifByteOrder o_orig;
|
| + ExifMnoteDataOlympus *n = (ExifMnoteDataOlympus *) 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_olympus_set_offset (ExifMnoteData *n, unsigned int o)
|
| +{
|
| + if (n) ((ExifMnoteDataOlympus *) n)->offset = o;
|
| +}
|
| +
|
| +static enum OlympusVersion
|
| +exif_mnote_data_olympus_identify_variant (const unsigned char *buf,
|
| + unsigned int buf_size)
|
| +{
|
| + /* Olympus, Nikon, Sanyo, Epson */
|
| + if (buf_size >= 8) {
|
| + /* Match the terminating NUL character, too */
|
| + if (!memcmp (buf, "OLYMPUS", 8))
|
| + return olympusV2;
|
| + else if (!memcmp (buf, "OLYMP", 6))
|
| + return olympusV1;
|
| + else if (!memcmp (buf, "SANYO", 6))
|
| + return sanyoV1;
|
| + else if (!memcmp (buf, "EPSON", 6))
|
| + return epsonV1;
|
| + else if (!memcmp (buf, "Nikon", 6)) {
|
| + switch (buf[6]) {
|
| + case 1: return nikonV1;
|
| + case 2: return nikonV2;
|
| + default: return 0; /* Unrecognized Nikon variant */
|
| + }
|
| + }
|
| + }
|
| +
|
| + /* Another variant of Nikon */
|
| + if ((buf_size >= 2) && (buf[0] == 0x00) && (buf[1] == 0x1b)) {
|
| + return nikonV0;
|
| + }
|
| +
|
| + return unrecognized;
|
| +}
|
| +
|
| +int
|
| +exif_mnote_data_olympus_identify (const ExifData *ed, const ExifEntry *e)
|
| +{
|
| + int variant = exif_mnote_data_olympus_identify_variant(e->data, e->size);
|
| +
|
| + if (variant == nikonV0) {
|
| + /* This variant needs some extra checking with the Make */
|
| + char value[5];
|
| + ExifEntry *em = exif_data_get_entry (ed, EXIF_TAG_MAKE);
|
| + variant = unrecognized;
|
| +
|
| + if (em) {
|
| + const char *v = exif_entry_get_value (em, value, sizeof(value));
|
| + if (v && (!strncmp (v, "Nikon", sizeof(value)) ||
|
| + !strncmp (v, "NIKON", sizeof(value)) ))
|
| + /* When saved, this variant will be written out like the
|
| + * alternative nikonV2 form above instead
|
| + */
|
| + variant = nikonV0;
|
| + }
|
| + }
|
| +
|
| + return variant;
|
| +}
|
| +
|
| +
|
| +ExifMnoteData *
|
| +exif_mnote_data_olympus_new (ExifMem *mem)
|
| +{
|
| + ExifMnoteData *d;
|
| +
|
| + if (!mem) return NULL;
|
| +
|
| + d = exif_mem_alloc (mem, sizeof (ExifMnoteDataOlympus));
|
| + if (!d) return NULL;
|
| +
|
| + exif_mnote_data_construct (d, mem);
|
| +
|
| + /* Set up function pointers */
|
| + d->methods.free = exif_mnote_data_olympus_free;
|
| + d->methods.set_byte_order = exif_mnote_data_olympus_set_byte_order;
|
| + d->methods.set_offset = exif_mnote_data_olympus_set_offset;
|
| + d->methods.load = exif_mnote_data_olympus_load;
|
| + d->methods.save = exif_mnote_data_olympus_save;
|
| + d->methods.count = exif_mnote_data_olympus_count;
|
| + d->methods.get_id = exif_mnote_data_olympus_get_id;
|
| + d->methods.get_name = exif_mnote_data_olympus_get_name;
|
| + d->methods.get_title = exif_mnote_data_olympus_get_title;
|
| + d->methods.get_description = exif_mnote_data_olympus_get_description;
|
| + d->methods.get_value = exif_mnote_data_olympus_get_value;
|
| +
|
| + return d;
|
| +}
|
|
|
| Property changes on: libexif/sources/libexif/olympus/exif-mnote-data-olympus.c
|
| ___________________________________________________________________
|
| Added: svn:eol-style
|
| + LF
|
|
|
|
|