From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 21:33:14 +0200 Subject: Adding upstream version 115.7.0esr. Signed-off-by: Daniel Baumann --- media/ffvpx/libavutil/x86/emms.h | 58 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 58 insertions(+) create mode 100644 media/ffvpx/libavutil/x86/emms.h (limited to 'media/ffvpx/libavutil/x86/emms.h') diff --git a/media/ffvpx/libavutil/x86/emms.h b/media/ffvpx/libavutil/x86/emms.h new file mode 100644 index 0000000000..8ceec110cf --- /dev/null +++ b/media/ffvpx/libavutil/x86/emms.h @@ -0,0 +1,58 @@ +/* + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef AVUTIL_X86_EMMS_H +#define AVUTIL_X86_EMMS_H + +#include "config.h" +#include "libavutil/attributes.h" + +void avpriv_emms_asm(void); + +#if HAVE_MMX_INLINE +#ifndef __MMX__ +#include "libavutil/cpu.h" +#endif + +# 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() + * Note, *alloc() and *free() also use float code in some libc implementations + * thus this also applies to them or any function using them. + */ +static av_always_inline void emms_c(void) +{ +/* Some inlined functions may also use mmx instructions regardless of + * runtime cpuflags. With that in mind, we unconditionally empty the + * mmx state if the target cpu chosen at configure time supports it. + */ +#if !defined(__MMX__) + if(av_get_cpu_flags() & AV_CPU_FLAG_MMX) +#endif + __asm__ volatile ("emms" ::: "memory"); +} +#elif HAVE_MMX && HAVE_MM_EMPTY +# include +# define emms_c _mm_empty +#elif HAVE_MMX_EXTERNAL +# define emms_c avpriv_emms_asm +#endif /* HAVE_MMX_INLINE */ + +#endif /* AVUTIL_X86_EMMS_H */ -- cgit v1.2.3