Initial revision

lib/sector.c

@@ -0,0 +1,79 @@
+/*
+    $Id: sector.c,v 1.1 2003/03/24 19:01:09 rocky Exp $
+
+    Copyright (C) 2000 Herbert Valerio Riedel <hvr@gnu.org>
+
+    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 program 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 General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+*/
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include "cdio_assert.h"
+#include "sector.h"
+#include "util.h"
+
+static const char _rcsid[] = "$Id: sector.c,v 1.1 2003/03/24 19:01:09 rocky Exp $";
+
+void
+cdio_lba_to_msf (uint32_t lba, msf_t *msf)
+{
+  cdio_assert (msf != 0);
+
+  msf->m = to_bcd8 (lba / (60 * 75));
+  msf->s = to_bcd8 ((lba / 75) % 60);
+  msf->f = to_bcd8 (lba % 75);
+}
+
+void
+cdio_lsn_to_msf (lsn_t lsn, msf_t *msf)
+{
+  cdio_assert (msf != 0);
+  cdio_lba_to_msf(cdio_lsn_to_lba(lsn), msf);
+}
+
+uint32_t
+cdio_msf_to_lba (const msf_t *msf)
+{
+  uint32_t lba = 0;
+
+  cdio_assert (msf != 0);
+
+  lba = from_bcd8 (msf->m);
+  lba *= 60;
+
+  lba += from_bcd8 (msf->s);
+  lba *= 75;
+  
+  lba += from_bcd8 (msf->f);
+
+  return lba;
+}
+
+uint32_t
+cdio_msf_to_lsn (const msf_t *msf)
+{
+  return cdio_lba_to_lsn(cdio_msf_to_lba (msf));
+}
+
+
+/* 
+ * Local variables:
+ *  c-file-style: "gnu"
+ *  tab-width: 8
+ *  indent-tabs-mode: nil
+ * End:
+ */