The EXIF tag parsing library.

diff --git a/exif.h b/exif.h
new file mode 100644 (file)
index 0000000..142a120
--- /dev/null
+++ b/exif.h
@@ -0,0 +1,88 @@
+/*
+
+Copyright (c) 2000 Curtis Galloway
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+$Id$
+
+*/
+
+typedef struct exif_rational {
+  int      num;
+  unsigned denom;
+} exif_rational_t;
+
+typedef union {
+  long            l;
+  float           f;
+  double          g;
+  char *          s;
+  exif_rational_t r;
+} exif_rec_data_t;
+
+typedef struct exif_record {
+  char *           rec_name;
+  char             rec_type;
+  int              exif_format;
+  exif_rec_data_t  rec_data;
+} exif_record_t;
+
+typedef struct exif_data {
+  int           n_recs;
+  int           n_alloc;
+  exif_record_t recs[0];
+} exif_data_t;
+
+
+/* EXIF data formats */
+
+#define EXIF_FMT_COMPUTED  -1 /* Not in raw data */
+#define EXIF_FMT_BYTE       1 
+#define EXIF_FMT_STRING     2
+#define EXIF_FMT_USHORT     3
+#define EXIF_FMT_ULONG      4
+#define EXIF_FMT_URATIONAL  5
+#define EXIF_FMT_SBYTE      6
+#define EXIF_FMT_UNDEFINED  7
+#define EXIF_FMT_SSHORT     8
+#define EXIF_FMT_SLONG      9
+#define EXIF_FMT_SRATIONAL 10
+#define EXIF_FMT_SINGLE    11
+#define EXIF_FMT_DOUBLE    12
+
+extern void
+exif_init(void *(*malloc_fn)(int),
+         void (*free_fn)(void *),
+         void *(*realloc_fn)(void *, int));
+
+extern exif_data_t *
+exif_parse_fd(int fd);
+
+extern exif_data_t *
+exif_parse_file(const char *filename);
+
+extern void
+exif_free_data(exif_data_t *d);
+
+extern exif_record_t *
+exif_find_record(exif_data_t *d, const char *rec_name);
+
+