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Diffstat (limited to 'apps/codecs/libcook/libavutil/bswap.h')
-rw-r--r-- | apps/codecs/libcook/libavutil/bswap.h | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/apps/codecs/libcook/libavutil/bswap.h b/apps/codecs/libcook/libavutil/bswap.h new file mode 100644 index 0000000000..cf68c43c72 --- /dev/null +++ b/apps/codecs/libcook/libavutil/bswap.h | |||
@@ -0,0 +1,99 @@ | |||
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 | #include "common.h" | ||
32 | |||
33 | #if ARCH_ARM | ||
34 | # include "arm/bswap.h" | ||
35 | #elif ARCH_BFIN | ||
36 | # include "bfin/bswap.h" | ||
37 | #elif ARCH_SH4 | ||
38 | # include "sh4/bswap.h" | ||
39 | #elif ARCH_X86 | ||
40 | # include "x86/bswap.h" | ||
41 | #endif | ||
42 | |||
43 | #ifndef bswap_16 | ||
44 | static av_always_inline av_const uint16_t bswap_16(uint16_t x) | ||
45 | { | ||
46 | x= (x>>8) | (x<<8); | ||
47 | return x; | ||
48 | } | ||
49 | #endif | ||
50 | |||
51 | #ifndef bswap_32 | ||
52 | static av_always_inline av_const uint32_t bswap_32(uint32_t x) | ||
53 | { | ||
54 | x= ((x<<8)&0xFF00FF00) | ((x>>8)&0x00FF00FF); | ||
55 | x= (x>>16) | (x<<16); | ||
56 | return x; | ||
57 | } | ||
58 | #endif | ||
59 | |||
60 | #ifndef bswap_64 | ||
61 | static inline uint64_t av_const bswap_64(uint64_t x) | ||
62 | { | ||
63 | #if 0 | ||
64 | x= ((x<< 8)&0xFF00FF00FF00FF00ULL) | ((x>> 8)&0x00FF00FF00FF00FFULL); | ||
65 | x= ((x<<16)&0xFFFF0000FFFF0000ULL) | ((x>>16)&0x0000FFFF0000FFFFULL); | ||
66 | return (x>>32) | (x<<32); | ||
67 | #else | ||
68 | union { | ||
69 | uint64_t ll; | ||
70 | uint32_t l[2]; | ||
71 | } w, r; | ||
72 | w.ll = x; | ||
73 | r.l[0] = bswap_32 (w.l[1]); | ||
74 | r.l[1] = bswap_32 (w.l[0]); | ||
75 | return r.ll; | ||
76 | #endif | ||
77 | } | ||
78 | #endif | ||
79 | |||
80 | // be2me ... big-endian to machine-endian | ||
81 | // le2me ... little-endian to machine-endian | ||
82 | |||
83 | #ifdef WORDS_BIGENDIAN | ||
84 | #define be2me_16(x) (x) | ||
85 | #define be2me_32(x) (x) | ||
86 | #define be2me_64(x) (x) | ||
87 | #define le2me_16(x) bswap_16(x) | ||
88 | #define le2me_32(x) bswap_32(x) | ||
89 | #define le2me_64(x) bswap_64(x) | ||
90 | #else | ||
91 | #define be2me_16(x) bswap_16(x) | ||
92 | #define be2me_32(x) bswap_32(x) | ||
93 | #define be2me_64(x) bswap_64(x) | ||
94 | #define le2me_16(x) (x) | ||
95 | #define le2me_32(x) (x) | ||
96 | #define le2me_64(x) (x) | ||
97 | #endif | ||
98 | |||
99 | #endif /* AVUTIL_BSWAP_H */ | ||