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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
commit | 6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch) | |
tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /media/ffvpx/libavutil/arm/bswap.h | |
parent | Initial commit. (diff) | |
download | thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.tar.xz thunderbird-6bf0a5cb5034a7e684dcc3500e841785237ce2dd.zip |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'media/ffvpx/libavutil/arm/bswap.h')
-rw-r--r-- | media/ffvpx/libavutil/arm/bswap.h | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/media/ffvpx/libavutil/arm/bswap.h b/media/ffvpx/libavutil/arm/bswap.h new file mode 100644 index 0000000000..c3460e035d --- /dev/null +++ b/media/ffvpx/libavutil/arm/bswap.h @@ -0,0 +1,70 @@ +/* + * 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_ARM_BSWAP_H +#define AVUTIL_ARM_BSWAP_H + +#include <stdint.h> +#include "config.h" +#include "libavutil/attributes.h" + +#ifdef __ARMCC_VERSION + +#if HAVE_ARMV6 +#define av_bswap32 av_bswap32 +static av_always_inline av_const uint32_t av_bswap32(uint32_t x) +{ + return __rev(x); +} +#endif /* HAVE_ARMV6 */ + +#elif HAVE_INLINE_ASM + +#if HAVE_ARMV6_INLINE +#define av_bswap16 av_bswap16 +static av_always_inline av_const unsigned av_bswap16(unsigned x) +{ + unsigned y; + + __asm__("rev16 %0, %1" : "=r"(y) : "r"(x)); + return y; +} +#endif + +#if AV_GCC_VERSION_AT_MOST(4,4) +#define av_bswap32 av_bswap32 +static av_always_inline av_const uint32_t av_bswap32(uint32_t x) +{ + uint32_t y; +#if HAVE_ARMV6_INLINE + __asm__("rev %0, %1" : "=r"(y) : "r"(x)); +#else + uint32_t t; + __asm__ ("eor %1, %2, %2, ror #16 \n\t" + "bic %1, %1, #0xFF0000 \n\t" + "mov %0, %2, ror #8 \n\t" + "eor %0, %0, %1, lsr #8 \n\t" + : "=r"(y), "=&r"(t) : "r"(x)); +#endif /* HAVE_ARMV6_INLINE */ + return y; +} +#endif /* AV_GCC_VERSION_AT_MOST(4,4) */ + +#endif /* __ARMCC_VERSION */ + +#endif /* AVUTIL_ARM_BSWAP_H */ |