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Annotation of /xvidcore/src/utils/emms.c

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Revision 1.3 - (view) (download)

1 : edgomez 1.3 /*****************************************************************************
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 :     * $Id$
37 :     *
38 :     ****************************************************************************/
39 :    
40 :    
41 : Isibaar 1.1 #include "emms.h"
42 :     #include "../portab.h"
43 :    
44 : edgomez 1.3 /*****************************************************************************
45 :     * Library data, declared here
46 :     ****************************************************************************/
47 :    
48 : Isibaar 1.1 emmsFuncPtr emms;
49 : edgomez 1.3
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 : edgomez 1.2 void
61 :     emms_c()
62 :     {
63 :     }
64 :    
65 : edgomez 1.3 /* The real mmx emms wrapper */
66 : edgomez 1.2 void
67 :     emms_mmx()
68 :     {
69 : edgomez 1.3 /* the EMMS macro is defined according to the compiler in portab.h */
70 : edgomez 1.2 EMMS();
71 : edgomez 1.3
72 : edgomez 1.2 }

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