iRiver scramble and descramble code from Dave Cooper

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@5649 a1c6a512-1295-4272-9138-f99709370657

tools/iriver.h

@@ -0,0 +1,37 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2005 by Daniel Stenberg
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#define TRUE 1
+#define FALSE 0
+
+#define BOOL unsigned int
+
+#define ESTF_SIZE 32
+
+enum striptype
+{
+  STRIP_NONE,
+  STRIP_HEADER_CHECKSUM,
+  STRIP_HEADER_CHECKSUM_ESTF
+};
+
+/* protos for iriver.c */
+int iriver_decode(char *infile, char *outfile, BOOL modify,
+                  enum striptype stripmode );
+int iriver_encode(char *infile_name, char *outfile_name, BOOL modify );