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revision 1.2, Wed Jun 12 20:38:41 2002 UTC revision 1.4, Thu Sep 5 21:15:18 2002 UTC
# Line 1  Line 1 
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  #include "emms.h"  #include "emms.h"
32  #include "../portab.h"  #include "../portab.h"
33    
34    /*****************************************************************************
35     * Library data, declared here
36     ****************************************************************************/
37    
38  emmsFuncPtr emms;  emmsFuncPtr emms;
39    
40    
41    /*****************************************************************************
42     * emms functions
43     *
44     * emms functions are used to restored the fpu context after mmx operations
45     * because mmx and fpu share their registers/context (??? need to be confirmed)
46     *
47     ****************************************************************************/
48    
49    /* The no op wrapper for non MMX platforms */
50  void  void
51  emms_c()  emms_c()
52  {  {
53  }  }
54    
55    /* The real mmx emms wrapper */
56  void  void
57  emms_mmx()  emms_mmx()
58  {  {
59            /* the EMMS macro is defined according to the compiler in portab.h */
60          EMMS();          EMMS();
61    
62  }  }

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