| 1 | /* |
| 2 | * Copyright (C) 2007 Marc Hoffman |
| 3 | * |
| 4 | * This file is part of FFmpeg. |
| 5 | * |
| 6 | * FFmpeg is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU Lesser General Public |
| 8 | * License as published by the Free Software Foundation; either |
| 9 | * version 2.1 of the License, or (at your option) any later version. |
| 10 | * |
| 11 | * FFmpeg is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 14 | * Lesser General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU Lesser General Public |
| 17 | * License along with FFmpeg; if not, write to the Free Software |
| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 19 | */ |
| 20 | |
| 21 | /** |
| 22 | * @file |
| 23 | * byte swapping routines |
| 24 | */ |
| 25 | |
| 26 | #ifndef AVUTIL_BFIN_BSWAP_H |
| 27 | #define AVUTIL_BFIN_BSWAP_H |
| 28 | |
| 29 | #include <stdint.h> |
| 30 | #include "config.h" |
| 31 | #include "libavutil/attributes.h" |
| 32 | |
| 33 | #define av_bswap32 av_bswap32 |
| 34 | static av_always_inline av_const uint32_t av_bswap32(uint32_t x) |
| 35 | { |
| 36 | unsigned tmp; |
| 37 | __asm__("%1 = %0 >> 8 (V); \n\t" |
| 38 | "%0 = %0 << 8 (V); \n\t" |
| 39 | "%0 = %0 | %1; \n\t" |
| 40 | "%0 = PACK(%0.L, %0.H); \n\t" |
| 41 | : "+d"(x), "=&d"(tmp)); |
| 42 | return x; |
| 43 | } |
| 44 | |
| 45 | #endif /* AVUTIL_BFIN_BSWAP_H */ |