--- emms.c	2002/03/08 02:44:58	1.1
+++ emms.c	2002/11/17 00:51:10	1.7
@@ -1,6 +1,88 @@
+/*****************************************************************************
+ *
+ *  XVID MPEG-4 VIDEO CODEC
+ *  - emms C wrapper -
+ *
+ *  Copyright(C) 2002 Michael Militzer <isibaar@xvid.org>
+ *
+ *  This file is part of XviD, a free MPEG-4 video encoder/decoder
+ *
+ *  XviD 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
+ *
+ *  Under section 8 of the GNU General Public License, the copyright
+ *  holders of XVID explicitly forbid distribution in the following
+ *  countries:
+ *
+ *    - Japan
+ *    - United States of America
+ *
+ *  Linking XviD statically or dynamically with other modules is making a
+ *  combined work based on XviD.  Thus, the terms and conditions of the
+ *  GNU General Public License cover the whole combination.
+ *
+ *  As a special exception, the copyright holders of XviD give you
+ *  permission to link XviD with independent modules that communicate with
+ *  XviD solely through the VFW1.1 and DShow interfaces, regardless of the
+ *  license terms of these independent modules, and to copy and distribute
+ *  the resulting combined work under terms of your choice, provided that
+ *  every copy of the combined work is accompanied by a complete copy of
+ *  the source code of XviD (the version of XviD used to produce the
+ *  combined work), being distributed under the terms of the GNU General
+ *  Public License plus this exception.  An independent module is a module
+ *  which is not derived from or based on XviD.
+ *
+ *  Note that people who make modified versions of XviD are not obligated
+ *  to grant this special exception for their modified versions; it is
+ *  their choice whether to do so.  The GNU General Public License gives
+ *  permission to release a modified version without this exception; this
+ *  exception also makes it possible to release a modified version which
+ *  carries forward this exception.
+ *
+ * $Id: emms.c,v 1.7 2002/11/17 00:51:10 edgomez Exp $
+ *
+ ****************************************************************************/
+
 #include "emms.h"
 #include "../portab.h"
 
+/*****************************************************************************
+ * Library data, declared here
+ ****************************************************************************/
+
 emmsFuncPtr emms;
-void emms_c() {}
-void emms_mmx() { EMMS(); }
+
+
+/*****************************************************************************
+ * emms functions
+ *
+ * emms functions are used to restored the fpu context after mmx operations
+ * because mmx and fpu share their registers/context (??? need to be confirmed)
+ *
+ ****************************************************************************/
+
+/* The no op wrapper for non MMX platforms */
+void
+emms_c()
+{
+}
+
+/* The real mmx emms wrapper */
+void
+emms_mmx()
+{
+	/* the EMMS macro is defined according to the compiler in portab.h */
+	EMMS();
+
+}