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revision 218, Sun Jun 16 19:54:20 2002 UTC revision 219, Sun Jun 16 22:20:36 2002 UTC
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1    /*****************************************************************************
2     *
3     *  XVID MPEG-4 VIDEO CODEC
4     *  - emms C wrapper -
5     *
6     *  This program is an implementation of a part of one or more MPEG-4
7     *  Video tools as specified in ISO/IEC 14496-2 standard.  Those intending
8     *  to use this software module in hardware or software products are
9     *  advised that its use may infringe existing patents or copyrights, and
10     *  any such use would be at such party's own risk.  The original
11     *  developer of this software module and his/her company, and subsequent
12     *  editors and their companies, will have no liability for use of this
13     *  software or modifications or derivatives thereof.
14     *
15     *  This program is free software ; you can redistribute it and/or modify
16     *  it under the terms of the GNU General Public License as published by
17     *  the Free Software Foundation ; either version 2 of the License, or
18     *  (at your option) any later version.
19     *
20     *  This program is distributed in the hope that it will be useful,
21     *  but WITHOUT ANY WARRANTY ; without even the implied warranty of
22     *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
23     *  GNU General Public License for more details.
24     *
25     *  You should have received a copy of the GNU General Public License
26     *  along with this program ; if not, write to the Free Software
27     *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
28     *
29     ****************************************************************************/
30    /*****************************************************************************
31     *
32     *  History
33     *
34     *  - Mon Jun 17 00:10:09 2002 Added legal header
35     *
36     *  $Id: emms.c,v 1.3 2002-06-16 22:20:36 edgomez Exp $
37     *
38     ****************************************************************************/
39    
40    
41  #include "emms.h"  #include "emms.h"
42  #include "../portab.h"  #include "../portab.h"
43    
44    /*****************************************************************************
45     * Library data, declared here
46     ****************************************************************************/
47    
48  emmsFuncPtr emms;  emmsFuncPtr emms;
49    
50    
51    /*****************************************************************************
52     * emms functions
53     *
54     * emms functions are used to restored the fpu context after mmx operations
55     * because mmx and fpu share their registers/context (??? need to be confirmed)
56     *
57     ****************************************************************************/
58    
59    /* The no op wrapper for non MMX platforms */
60  void  void
61  emms_c()  emms_c()
62  {  {
63  }  }
64    
65    /* The real mmx emms wrapper */
66  void  void
67  emms_mmx()  emms_mmx()
68  {  {
69            /* the EMMS macro is defined according to the compiler in portab.h */
70          EMMS();          EMMS();
71    
72  }  }

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