diff options
Diffstat (limited to 'libavutil/bfin')
-rw-r--r-- | libavutil/bfin/bswap.h | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/libavutil/bfin/bswap.h b/libavutil/bfin/bswap.h new file mode 100644 index 0000000000..bfd850e294 --- /dev/null +++ b/libavutil/bfin/bswap.h @@ -0,0 +1,45 @@ +/* + * Copyright (C) 2007 Marc Hoffman + * + * 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 bswap.h + * byte swapping routines + */ + +#ifndef AVUTIL_BFIN_BSWAP_H +#define AVUTIL_BFIN_BSWAP_H + +#include <stdint.h> +#include "config.h" +#include "libavutil/common.h" + +#define bswap_32 bswap_32 +static av_always_inline av_const uint32_t bswap_32(uint32_t x) +{ + unsigned tmp; + __asm__("%1 = %0 >> 8 (V); \n\t" + "%0 = %0 << 8 (V); \n\t" + "%0 = %0 | %1; \n\t" + "%0 = PACK(%0.L, %0.H); \n\t" + : "+d"(x), "=&d"(tmp)); + return x; +} + +#endif /* AVUTIL_BFIN_BSWAP_H */ |