1 /*
2 * This file is part of FFmpeg.
3 *
4 * FFmpeg is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * FFmpeg is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19 /**
20 * @file
21 * byte swapping routines
22 */
23
24 #ifndef AVUTIL_SH4_BSWAP_H
25 #define AVUTIL_SH4_BSWAP_H
26
27 #include <stdint.h>
28 #include "config.h"
29 #include "libavutil/attributes.h"
30
31 #define av_bswap16 av_bswap16
av_bswap16(uint16_t x)32 static av_always_inline av_const uint16_t av_bswap16(uint16_t x)
33 {
34 __asm__("swap.b %0,%0" : "+r"(x));
35 return x;
36 }
37
38 #define av_bswap32 av_bswap32
av_bswap32(uint32_t x)39 static av_always_inline av_const uint32_t av_bswap32(uint32_t x)
40 {
41 __asm__("swap.b %0,%0\n"
42 "swap.w %0,%0\n"
43 "swap.b %0,%0\n"
44 : "+r"(x));
45 return x;
46 }
47
48 #endif /* AVUTIL_SH4_BSWAP_H */
49