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-rw-r--r--apps/codecs/libwmapro/libavutil/bswap.h89
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diff --git a/apps/codecs/libwmapro/libavutil/bswap.h b/apps/codecs/libwmapro/libavutil/bswap.h
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1/*
2 * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
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 libavutil/bswap.h
23 * byte swapping routines
24 */
25
26#ifndef AVUTIL_BSWAP_H
27#define AVUTIL_BSWAP_H
28
29#include <stdint.h>
30//#include "config.h"
31
32#ifndef bswap_16
33static inline uint16_t bswap_16(uint16_t x)
34{
35 x= (x>>8) | (x<<8);
36 return x;
37}
38#endif
39
40#ifndef bswap_32
41static inline uint32_t bswap_32(uint32_t x)
42{
43 x= ((x<<8)&0xFF00FF00) | ((x>>8)&0x00FF00FF);
44 x= (x>>16) | (x<<16);
45 return x;
46}
47#endif
48
49#ifndef bswap_64
50static inline uint64_t bswap_64(uint64_t x)
51{
52#if 0
53 x= ((x<< 8)&0xFF00FF00FF00FF00ULL) | ((x>> 8)&0x00FF00FF00FF00FFULL);
54 x= ((x<<16)&0xFFFF0000FFFF0000ULL) | ((x>>16)&0x0000FFFF0000FFFFULL);
55 return (x>>32) | (x<<32);
56#else
57 union {
58 uint64_t ll;
59 uint32_t l[2];
60 } w, r;
61 w.ll = x;
62 r.l[0] = bswap_32 (w.l[1]);
63 r.l[1] = bswap_32 (w.l[0]);
64 return r.ll;
65#endif
66}
67#endif
68
69// be2me ... big-endian to machine-endian
70// le2me ... little-endian to machine-endian
71
72#define HAVE_BIGENDIAN 0
73#if HAVE_BIGENDIAN
74#define be2me_16(x) (x)
75#define be2me_32(x) (x)
76#define be2me_64(x) (x)
77#define le2me_16(x) bswap_16(x)
78#define le2me_32(x) bswap_32(x)
79#define le2me_64(x) bswap_64(x)
80#else
81#define be2me_16(x) bswap_16(x)
82#define be2me_32(x) bswap_32(x)
83#define be2me_64(x) bswap_64(x)
84#define le2me_16(x) (x)
85#define le2me_32(x) (x)
86#define le2me_64(x) (x)
87#endif
88
89#endif /* AVUTIL_BSWAP_H */