Restructurizing database code, seperating database code from dbtree code,

wrote the first basic functions to manipulate fileentries.


git-svn-id: svn://svn.rockbox.org/rockbox/trunk@6359 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 98 insertions, 0 deletions

diff --git a/apps/database.h b/apps/database.h
new file mode 100644
index 0000000..cdbd4d4
--- /dev/null
+++ b/apps/database.h
@@ -0,0 +1,98 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2005 by Michiel van der Kolk
+ *
+ * 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 DATABASE_H
+#define DATABASE_H
+
+/* workaround for cygwin not defining endian macros */
+#if !defined(LITTLE_ENDIAN) && !defined(BIG_ENDIAN) && defined(_X86_)
+#define LITTLE_ENDIAN
+#endif
+
+#ifdef LITTLE_ENDIAN
+#define BE32(_x_) (((_x_ & 0xff000000) >> 24) | \
+                   ((_x_ & 0x00ff0000) >> 8) | \
+                   ((_x_ & 0x0000ff00) << 8) | \
+                   ((_x_ & 0x000000ff) << 24))
+#else
+#define BE32(_x_) _x_
+#endif
+
+#define SONGENTRY_SIZE    (tagdbheader.songlen+12+tagdbheader.genrelen+4)
+#define FILEENTRY_SIZE    (tagdbheader.filelen+12)
+#define ALBUMENTRY_SIZE   (tagdbheader.albumlen+4+tagdbheader.songarraylen*4)
+#define ARTISTENTRY_SIZE  (tagdbheader.artistlen+tagdbheader.albumarraylen*4)
+
+#define FILERECORD2OFFSET(_x_) (tagdbheader.filestart + _x_ * FILEENTRY_SIZE)
+
+extern int tagdb_initialized;
+
+struct tagdb_header {
+        int version;
+        int artiststart;
+        int albumstart;
+        int songstart;
+        int filestart;
+        int artistcount;
+        int albumcount;
+        int songcount;
+        int filecount;
+        int artistlen;
+        int albumlen;
+        int songlen;
+        int genrelen;
+        int filelen;
+        int songarraylen;
+        int albumarraylen;
+        int rundbdirty;
+};
+
+struct file_entry {
+        char *name;
+        int hash;
+        int tagentry;
+        int rundbentry;
+};
+
+extern struct tagdb_header tagdbheader;
+extern int tagdb_fd;
+
+int tagdb_init(void);
+void tagdb_shutdown(void);
+
+#define TAGDB_VERSION 2
+
+struct rundb_header {
+        int version;
+        int entrycount;
+};
+
+struct rundb_entry {
+        int fileentry;
+        int hash;
+        short rating;
+        short voladjust;
+        int playcount;
+        int lastplayed;
+};
+
+extern struct rundb_header rundbheader;
+
+#define RUNDB_VERSION 1
+
+#endif