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/bswap.h | 88 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 88 insertions(+) create mode 100644 media/ffvpx/libavutil/x86/bswap.h (limited to 'media/ffvpx/libavutil/x86/bswap.h') diff --git a/media/ffvpx/libavutil/x86/bswap.h b/media/ffvpx/libavutil/x86/bswap.h new file mode 100644 index 0000000000..b2f18b6c93 --- /dev/null +++ b/media/ffvpx/libavutil/x86/bswap.h @@ -0,0 +1,88 @@ +/* + * 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 + */ + +/** + * @file + * byte swapping routines + */ + +#ifndef AVUTIL_X86_BSWAP_H +#define AVUTIL_X86_BSWAP_H + +#include +#if defined(_MSC_VER) +#include +#include +#endif +#include "config.h" +#include "libavutil/attributes.h" + +#if defined(_MSC_VER) + +#define av_bswap16 av_bswap16 +static av_always_inline av_const uint16_t av_bswap16(uint16_t x) +{ + return _rotr16(x, 8); +} + +#define av_bswap32 av_bswap32 +static av_always_inline av_const uint32_t av_bswap32(uint32_t x) +{ + return _byteswap_ulong(x); +} + +#if ARCH_X86_64 +#define av_bswap64 av_bswap64 +static inline uint64_t av_const av_bswap64(uint64_t x) +{ + return _byteswap_uint64(x); +} +#endif + + +#elif HAVE_INLINE_ASM + +#if AV_GCC_VERSION_AT_MOST(4,0) +#define av_bswap16 av_bswap16 +static av_always_inline av_const unsigned av_bswap16(unsigned x) +{ + __asm__("rorw $8, %w0" : "+r"(x)); + return x; +} +#endif /* AV_GCC_VERSION_AT_MOST(4,0) */ + +#if AV_GCC_VERSION_AT_MOST(4,4) || defined(__INTEL_COMPILER) +#define av_bswap32 av_bswap32 +static av_always_inline av_const uint32_t av_bswap32(uint32_t x) +{ + __asm__("bswap %0" : "+r" (x)); + return x; +} + +#if ARCH_X86_64 +#define av_bswap64 av_bswap64 +static inline uint64_t av_const av_bswap64(uint64_t x) +{ + __asm__("bswap %0": "=r" (x) : "0" (x)); + return x; +} +#endif +#endif /* AV_GCC_VERSION_AT_MOST(4,4) */ + +#endif /* HAVE_INLINE_ASM */ +#endif /* AVUTIL_X86_BSWAP_H */ -- cgit v1.2.3