FFmpeg
bswap.h
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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
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
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 */
#define av_const
Definition: attributes.h:76
#define av_bswap16
Definition: bswap.h:31
Macro definitions for various function/variable attributes.
#define av_bswap32
Definition: bswap.h:38
#define av_always_inline
Definition: attributes.h:39