diff options
| author | Michael Niedermayer <michaelni@gmx.at> | 2013-02-15 12:10:08 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2013-02-15 12:10:08 +0100 |
| commit | 61fbb4cd57d7bd280c6645df98acdacfe6004a88 (patch) | |
| tree | 52c35fd93bdfc3b30d6b284e59e9362131b49962 /libavutil/x86/emms.h | |
| parent | 75758f84def252a228a80a2e08d0c9ed7fce8df4 (diff) | |
| parent | 4db96649ca700db563d9da4ebe70bf9fc4c7a6ba (diff) | |
Merge commit '4db96649ca700db563d9da4ebe70bf9fc4c7a6ba'
* commit '4db96649ca700db563d9da4ebe70bf9fc4c7a6ba':
avutil: Ensure that emms_c is always defined, even on non-x86
configure: Move MinGW CPPFLAGS setting to libc section, where it belongs
avutil: Move emms code to x86-specific header
Conflicts:
configure
libavutil/internal.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavutil/x86/emms.h')
| -rw-r--r-- | libavutil/x86/emms.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/libavutil/x86/emms.h b/libavutil/x86/emms.h index 35f0dfbfc1..809a23b05b 100644 --- a/libavutil/x86/emms.h +++ b/libavutil/x86/emms.h @@ -19,6 +19,28 @@ #ifndef AVUTIL_X86_EMMS_H #define AVUTIL_X86_EMMS_H +#include "config.h" +#include "libavutil/attributes.h" + void avpriv_emms_yasm(void); +#if HAVE_MMX_INLINE +# define emms_c emms_c +/** + * Empty mmx state. + * this must be called between any dsp function and float/double code. + * for example sin(); dsp->idct_put(); emms_c(); cos() + */ +static av_always_inline void emms_c(void) +{ + if(av_get_cpu_flags() & AV_CPU_FLAG_MMX) + __asm__ volatile ("emms" ::: "memory"); +} +#elif HAVE_MMX && HAVE_MM_EMPTY +# include <mmintrin.h> +# define emms_c _mm_empty +#elif HAVE_MMX_EXTERNAL +# define emms_c avpriv_emms_yasm +#endif /* HAVE_MMX_INLINE */ + #endif /* AVUTIL_X86_EMMS_H */ |