+++ /dev/null
-/*
- * GQView
- * (C) 2005 John Ellis
- *
- * Authors:
- * Original version 2005 Lars Ellenberg, base on dcraw by David coffin.
- *
- * This software is released under the GNU General Public License (GNU GPL).
- * Please read the included file COPYING for more information.
- * This software comes with no warranty of any kind, use at your own risk!
- */
-
-#ifdef HAVE_CONFIG_H
-# include "config.h"
-#endif
-
-
-#include <stdio.h>
-#include <string.h>
-#include <unistd.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/mman.h>
-
-#include <glib.h>
-
-#include "intl.h"
-
-#include "format_raw.h"
-
-#include "format_canon.h"
-#include "format_fuji.h"
-#include "format_nikon.h"
-
-
-/* so that debugging is honored */
-extern gint debug;
-
-
-typedef struct _FormatRawEntry FormatRawEntry;
-struct _FormatRawEntry {
- const void *header_pattern;
- const guint header_length;
- const gchar *description;
- FormatRawParseFunc func_parse;
-};
-
-static FormatRawEntry format_raw_list[] = {
- FORMAT_RAW_CANON,
- FORMAT_RAW_FUJI,
- FORMAT_RAW_NIKON,
- { NULL, 0, NULL, NULL }
-};
-
-
-typedef struct _FormatExifEntry FormatExifEntry;
-struct _FormatExifEntry {
- FormatExifMatchType header_type;
- const void *header_pattern;
- const guint header_length;
- const gchar *description;
- FormatExifParseFunc func_parse;
-};
-
-static FormatExifEntry format_exif_list[] = {
- FORMAT_EXIF_CANON,
- FORMAT_EXIF_FUJI,
- FORMAT_EXIF_NIKON,
- { 0, NULL, 0, NULL }
-};
-
-
-static FormatRawEntry *format_raw_find(const void *data, const guint len)
-{
- gint n;
-
- n = 0;
- while (format_raw_list[n].header_pattern)
- {
- if (format_raw_list[n].header_length <= len &&
- memcmp(data, format_raw_list[n].header_pattern, format_raw_list[n].header_length) == 0)
- {
- return &format_raw_list[n];
- }
- n++;
- }
-
- return NULL;
-}
-
-static gint format_raw_parse(FormatRawEntry *entry,
- const void *data, const guint len,
- guint *image_offset, guint *exif_offset)
-{
- guint io = 0;
- guint eo = 0;
- gint found;
-
- if (!entry || !entry->func_parse) return FALSE;
-
- if (debug) printf("RAW using file parser for %s\n", entry->description);
-
- found = entry->func_parse(data, len, &io, &eo);
-
- if (!found ||
- io >= len - 4 ||
- eo >= len)
- {
- return FALSE;
- }
-
- if (image_offset) *image_offset = io;
- if (exif_offset) *exif_offset = eo;
-
- return TRUE;
-}
-
-gint format_raw_img_exif_offsets(const void *data, const guint len,
- guint *image_offset, guint *exif_offset)
-{
- FormatRawEntry *entry;
-
- if (!data || len < 1) return FALSE;
-
- entry = format_raw_find(data, len);
-
- if (!entry || !entry->func_parse) return FALSE;
-
- return format_raw_parse(entry, data, len, image_offset, exif_offset);
-}
-
-
-gint format_raw_img_exif_offsets_fd(int fd, const void *header_data, const guint header_len,
- guint *image_offset, guint *exif_offset)
-{
- FormatRawEntry *entry;
- void *map_data = NULL;
- size_t map_len = 0;
- struct stat st;
- gint success;
-
- if (!header_data || fd < 0) return FALSE;
-
- entry = format_raw_find(header_data, header_len);
-
- if (!entry || !entry->func_parse) return FALSE;
-
- if (fstat(fd, &st) == -1)
- {
- printf("Failed to stat file %d\n", fd);
- return FALSE;
- }
- map_len = st.st_size;
- map_data = mmap(0, map_len, PROT_READ, MAP_PRIVATE, fd, 0);
- if (map_data == MAP_FAILED)
- {
- printf("Failed to mmap file %d\n", fd);
- return FALSE;
- }
-
- success = format_raw_parse(entry, map_data, map_len, image_offset, exif_offset);
-
- if (munmap(map_data, map_len) == -1)
- {
- printf("Failed to unmap file %d\n", fd);
- }
-
- if (success && image_offset)
- {
- if (lseek(fd, *image_offset, SEEK_SET) != *image_offset)
- {
- printf("Failed to seek to embedded image\n");
-
- *image_offset = 0;
- if (*exif_offset) *exif_offset = 0;
- success = FALSE;
- }
- }
-
- return success;
-}
-
-
-static FormatExifEntry *format_exif_makernote_find(ExifData *exif, unsigned char *tiff,
- guint offset, guint size)
-{
- ExifItem *make;
- gint n;
-
- make = exif_get_item(exif, "Make");
-
- n = 0;
- while (format_exif_list[n].header_pattern)
- {
- switch (format_exif_list[n].header_type)
- {
- case FORMAT_EXIF_MATCH_MAKERNOTE:
- if (format_exif_list[n].header_length + offset < size &&
- memcmp(tiff + offset, format_exif_list[n].header_pattern,
- format_exif_list[n].header_length) == 0)
- {
- return &format_exif_list[n];
- }
- break;
- case FORMAT_EXIF_MATCH_MAKE:
- if (make &&
- make->data_len >= format_exif_list[n].header_length &&
- memcmp(make->data, format_exif_list[n].header_pattern,
- format_exif_list[n].header_length) == 0)
- {
- return &format_exif_list[n];
- }
- break;
- }
- n++;
- }
-
- return FALSE;
-}
-
-gint format_exif_makernote_parse(ExifData *exif, unsigned char *tiff, guint offset,
- guint size, ExifByteOrder byte_order)
-{
- FormatExifEntry *entry;
-
- entry = format_exif_makernote_find(exif, tiff, offset, size);
-
- if (!entry || !entry->func_parse) return FALSE;
-
- if (debug) printf("EXIF using makernote parser for %s\n", entry->description);
-
- return entry->func_parse(exif, tiff, offset, size, byte_order);
-}
-
-
projects / geeqie.git / blobdiff