From 928e334831f87dfe3b35b50e119b0ade9980b944 Mon Sep 17 00:00:00 2001
From: Björn Stenberg <bjorn@haxx.se>
Date: Wed, 26 Jun 2002 21:11:29 +0000
Subject: Added id3 tracknum (Yusef Napora)

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@1204 a1c6a512-1295-4272-9138-f99709370657
---
 firmware/common/atoi.c | 31 +++++++++++++++++++++++++++++++
 firmware/common/atoi.h | 25 +++++++++++++++++++++++++
 firmware/id3.c         | 22 +++++++++++++++++++++-
 firmware/id3.h         |  1 +
 4 files changed, 78 insertions(+), 1 deletion(-)
 create mode 100644 firmware/common/atoi.c
 create mode 100644 firmware/common/atoi.h

diff --git a/firmware/common/atoi.c b/firmware/common/atoi.c
new file mode 100644
index 0000000000..4911d93e92
--- /dev/null
+++ b/firmware/common/atoi.c
@@ -0,0 +1,31 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2002 by Gary Czvitkovicz
+ *
+ * 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.
+ *
+ ****************************************************************************/
+
+#include "string.h"
+
+int atoi (const char *str)
+{
+    int val = 0, mlt = 1;
+    char *p;
+    p = (char *) (str + strlen(str) - 1);
+    for (; p >= str; --p, mlt *=10)
+        val += (mlt * ((int)*p - '0'));
+    return val;
+}
+
diff --git a/firmware/common/atoi.h b/firmware/common/atoi.h
new file mode 100644
index 0000000000..118879622b
--- /dev/null
+++ b/firmware/common/atoi.h
@@ -0,0 +1,25 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2002 by Felix Arends
+ *
+ * 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.
+ *
+ ****************************************************************************/
+
+#ifndef __ATOI_H__ 
+#define __ATOI_H__ 
+
+int atoi (const char *str);
+
+#endif /* __ATOI_H__ */
diff --git a/firmware/id3.c b/firmware/id3.c
index 0cb7118a19..902b0527bb 100644
--- a/firmware/id3.c
+++ b/firmware/id3.c
@@ -29,6 +29,7 @@
 #include <stdbool.h>
 #include "file.h"
 #include "debug.h"
+#include "atoi.h"
 
 #include "id3.h"
 
@@ -164,9 +165,10 @@ setid3v2title(int fd, struct mp3entry *entry)
     char *title = NULL;
     char *artist = NULL;
     char *album = NULL;
+    char *tracknum = NULL;
     char header[10];
     unsigned short int version;
-    int titlen=0, artistn=0, albumn=0;   
+    int titlen=0, artistn=0, albumn=0, tracknumn=0;   
     char *buffer = entry->id3v2buf;
 	
     /* 10 = headerlength */
@@ -249,6 +251,17 @@ setid3v2title(int fd, struct mp3entry *entry)
             albumn = headerlen;
             readsize += headerlen;
         }
+        else if(!strncmp(header, "TRCK", strlen("TRCK"))) {
+            readsize++;
+            headerlen--;
+            if(headerlen > (size - readsize))
+                headerlen = (size - readsize);
+            tracknum = buffer + readsize;
+            tracknumn = headerlen;
+            readsize += headerlen;
+        } else {
+            readsize += headerlen;
+        }
     }
     
     if(artist) {
@@ -265,6 +278,11 @@ setid3v2title(int fd, struct mp3entry *entry)
         entry->album = album;
         album[albumn]=0;
     }
+
+    if(tracknum) {
+        tracknum[tracknumn] = 0;
+        entry->tracknum = atoi(tracknum);
+    }
 }
 
 /*
@@ -493,6 +511,8 @@ mp3info(struct mp3entry *entry, char *filename)
     entry->title = NULL;
     entry->filesize = getfilesize(fd);
     entry->id3v2len = getid3v2len(fd);
+    entry->tracknum = 0;
+
     if(HASID3V2(entry))
         setid3v2title(fd, entry);
     entry->length = getsonglength(fd, entry);
diff --git a/firmware/id3.h b/firmware/id3.h
index 90a2efa1b5..798753ab97 100644
--- a/firmware/id3.h
+++ b/firmware/id3.h
@@ -24,6 +24,7 @@ struct mp3entry {
     char *title;
     char *artist;
     char *album;
+    int tracknum;
     int version;
     int layer;
     int bitrate;
-- 
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