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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 */ |