1 files changed, 103 insertions, 0 deletions

diff --git a/lib/rbcodec/metadata/mod.c b/lib/rbcodec/metadata/mod.c
new file mode 100644
index 0000000000..de76823e91
--- /dev/null
+++ b/lib/rbcodec/metadata/mod.c
@@ -0,0 +1,103 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2005 Dave Chapman
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <inttypes.h>
+
+#include "system.h"
+#include "metadata.h"
+#include <string-extra.h>
+#include "metadata_common.h"
+#include "metadata_parsers.h"
+#include "rbunicode.h"
+
+#define MODULEHEADERSIZE 0x438
+
+bool get_mod_metadata(int fd, struct mp3entry* id3)
+{    
+    /* Use the trackname part of the id3 structure as a temporary buffer */
+    unsigned char *buf = id3->id3v2buf;
+    unsigned char id[4];
+    bool is_mod_file = false;
+
+    /* Seek to file begin */
+    if (lseek(fd, 0, SEEK_SET) < 0)
+        return false;
+    /* Use id3v2buf as buffer for the track name */
+    if (read(fd, buf, sizeof(id3->id3v2buf)) < (ssize_t)sizeof(id3->id3v2buf))
+        return false;
+    /* Seek to MOD ID position */
+    if (lseek(fd, MODULEHEADERSIZE, SEEK_SET) < 0)
+        return false;
+    /* Read MOD ID */
+    if (read(fd, id, sizeof(id)) < (ssize_t)sizeof(id))
+        return false;
+
+    /* Mod type checking based on MikMod */
+    /* Protracker and variants */
+    if ((!memcmp(id, "M.K.", 4)) || (!memcmp(id, "M!K!", 4))) {
+        is_mod_file = true;
+    }
+    
+    /* Star Tracker */
+    if (((!memcmp(id, "FLT", 3)) || (!memcmp(id, "EXO", 3))) &&
+        (isdigit(id[3]))) {
+        char numchn = id[3] - '0';
+        if (numchn == 4 || numchn == 8)
+            is_mod_file = true;
+    }
+
+    /* Oktalyzer (Amiga) */
+    if (!memcmp(id, "OKTA", 4)) {
+        is_mod_file = true;
+    }
+
+    /* Oktalyser (Atari) */
+    if (!memcmp(id, "CD81", 4)) {
+        is_mod_file = true;
+    }
+
+    /* Fasttracker */
+    if ((!memcmp(id + 1, "CHN", 3)) && (isdigit(id[0]))) {
+        is_mod_file = true;
+    }
+    /* Fasttracker or Taketracker */
+    if (((!memcmp(id + 2, "CH", 2)) || (!memcmp(id + 2, "CN", 2)))
+        && (isdigit(id[0])) && (isdigit(id[1]))) {
+        is_mod_file = true;
+    }
+
+    /* Don't try to play if we can't find a known mod type
+     * (there are mod files which have nothing to do with music) */
+    if (!is_mod_file)
+        return false;
+
+    id3->title = id3->id3v2buf; /* Point title to previous read ID3 buffer. */
+    id3->bitrate = filesize(fd)/1024; /* size in kb */
+    id3->frequency = 44100;
+    id3->length = 120*1000;
+    id3->vbr = false;
+    id3->filesize = filesize(fd);
+        
+    return true;
+}
+