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| Rev | Author | Line No. | Line |
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| 4349 | Serge | 1 | /* |
| 2 | * This file is part of FFmpeg. |
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| 3 | * |
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| 4 | * FFmpeg is free software; you can redistribute it and/or |
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| 5 | * modify it under the terms of the GNU Lesser General Public |
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| 6 | * License as published by the Free Software Foundation; either |
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| 7 | * version 2.1 of the License, or (at your option) any later version. |
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| 8 | * |
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| 9 | * FFmpeg is distributed in the hope that it will be useful, |
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| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 12 | * Lesser General Public License for more details. |
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| 13 | * |
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| 14 | * You should have received a copy of the GNU Lesser General Public |
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| 15 | * License along with FFmpeg; if not, write to the Free Software |
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| 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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| 17 | */ |
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| 18 | |||
| 19 | #ifndef AVUTIL_X86_EMMS_H |
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| 20 | #define AVUTIL_X86_EMMS_H |
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| 21 | |||
| 22 | #include "config.h" |
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| 23 | #include "libavutil/attributes.h" |
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| 24 | #include "libavutil/cpu.h" |
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| 25 | |||
| 26 | void avpriv_emms_yasm(void); |
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| 27 | |||
| 28 | #if HAVE_MMX_INLINE |
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| 29 | # define emms_c emms_c |
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| 30 | /** |
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| 31 | * Empty mmx state. |
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| 32 | * this must be called between any dsp function and float/double code. |
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| 33 | * for example sin(); dsp->idct_put(); emms_c(); cos() |
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| 34 | */ |
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| 35 | static av_always_inline void emms_c(void) |
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| 36 | { |
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| 37 | if(av_get_cpu_flags() & AV_CPU_FLAG_MMX) |
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| 38 | __asm__ volatile ("emms" ::: "memory"); |
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| 39 | } |
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| 40 | #elif HAVE_MMX && HAVE_MM_EMPTY |
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| 41 | # include |
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| 42 | # define emms_c _mm_empty |
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| 43 | #elif HAVE_MMX_EXTERNAL |
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| 44 | # define emms_c avpriv_emms_yasm |
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| 45 | #endif /* HAVE_MMX_INLINE */ |
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| 46 | |||
| 47 | #endif /* AVUTIL_X86_EMMS_H */ |