Libav
emms.h
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1 /*
2  * This file is part of Libav.
3  *
4  * Libav is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * Libav is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with Libav; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18 
19 #ifndef AVUTIL_X86_EMMS_H
20 #define AVUTIL_X86_EMMS_H
21 
22 #include "config.h"
23 #include "libavutil/attributes.h"
24 
25 void avpriv_emms_yasm(void);
26 
27 #if HAVE_MMX_INLINE
28 # define emms_c emms_c
29 
34 static av_always_inline void emms_c(void)
35 {
36  __asm__ volatile ("emms" ::: "memory");
37 }
38 #elif HAVE_MMX && HAVE_MM_EMPTY
39 # include <mmintrin.h>
40 # define emms_c _mm_empty
41 #elif HAVE_MMX_EXTERNAL
42 # define emms_c avpriv_emms_yasm
43 #endif /* HAVE_MMX_INLINE */
44 
45 #endif /* AVUTIL_X86_EMMS_H */
Macro definitions for various function/variable attributes.
#define emms_c()
Definition: internal.h:47
void avpriv_emms_yasm(void)
#define av_always_inline
Definition: attributes.h:40