repositories / deb_ffmpeg.git / blame
| Commit | Line | Data |
|---|---|---|
| 2ba45a60 DM |
1 | /* |
| 2 | * This file is part of FFmpeg. | |
| 3 | * | |
| 4 | * FFmpeg 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 | * FFmpeg 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 FFmpeg; 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 | #include "libavutil/cpu.h" | |
| 25 | ||
| 26 | void avpriv_emms_yasm(void); | |
| 27 | ||
| 28 | #if HAVE_MMX_INLINE | |
| 29 | # define emms_c emms_c | |
| 30 | /** | |
| 31 | * Empty mmx state. | |
| 32 | * this must be called between any dsp function and float/double code. | |
| 33 | * for example sin(); dsp->idct_put(); emms_c(); cos() | |
| 34 | */ | |
| 35 | static av_always_inline void emms_c(void) | |
| 36 | { | |
| 37 | if(av_get_cpu_flags() & AV_CPU_FLAG_MMX) | |
| 38 | __asm__ volatile ("emms" ::: "memory"); | |
| 39 | } | |
| 40 | #elif HAVE_MMX && HAVE_MM_EMPTY | |
| 41 | # include <mmintrin.h> | |
| 42 | # define emms_c _mm_empty | |
| 43 | #elif HAVE_MMX_EXTERNAL | |
| 44 | # define emms_c avpriv_emms_yasm | |
| 45 | #endif /* HAVE_MMX_INLINE */ | |
| 46 | ||
| 47 | #endif /* AVUTIL_X86_EMMS_H */ |