Add libexif to deps/third_party.

libexif/sources/test/test-mem.c

+/* test-mem.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 <config.h>
+
+#include <libexif/exif-data.h>
+#include <libexif/exif-ifd.h>
+#include <libexif/exif-loader.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+
+int
+main ()
+{
+        ExifData *ed;
+        /* ExifEntry *e; */
+        unsigned char *eb, size[2];
+        unsigned int ebs;
+        ExifLoader *loader;
+        unsigned int i;
+
+        printf ("Creating EXIF data...\n");
+        ed = exif_data_new ();
+        exif_data_set_data_type (ed, EXIF_DATA_TYPE_UNCOMPRESSED_CHUNKY);
+
+        printf ("Fill EXIF data with all necessary entries to follow specs...\n");
+        exif_data_fix (ed);
+
+        exif_data_dump (ed);
+
+        printf ("Saving EXIF data to memory...\n");
+        exif_data_save_data (ed, &eb, &ebs);
+        exif_data_unref (ed);
+
+        printf ("Writing %i byte(s) EXIF data to loader...\n", ebs);
+        loader = exif_loader_new ();
+        size[0] = (unsigned char) ebs;
+        size[1] = (unsigned char) (ebs >> 8);
+        exif_loader_write (loader, size, 2);
+        for (i = 0; i < ebs && exif_loader_write (loader, eb + i, 1); i++);
+        printf ("Wrote %i byte(s).\n", i);
+        free (eb);
+        ed = exif_loader_get_data (loader);
+        exif_loader_unref (loader);
+        exif_data_dump (ed);
+        exif_data_unref (ed);
+
+        return 0;
+}