FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavutil/bswap.h
Date: 2024-02-16 17:37:06
Exec Total Coverage
Lines: 7 7 100.0%
Functions: 3 3 100.0%
Branches: 0 0 -%

Line Branch Exec Source
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
23 * byte swapping routines
24 */
25
26 #ifndef AVUTIL_BSWAP_H
27 #define AVUTIL_BSWAP_H
28
29 #include <stdint.h>
30 #include "libavutil/avconfig.h"
31 #include "attributes.h"
32
33 #ifdef HAVE_AV_CONFIG_H
34
35 #include "config.h"
36
37 #if ARCH_AARCH64
38 # include "aarch64/bswap.h"
39 #elif ARCH_ARM
40 # include "arm/bswap.h"
41 #elif ARCH_AVR32
42 # include "avr32/bswap.h"
43 #elif ARCH_RISCV
44 # include "riscv/bswap.h"
45 #elif ARCH_SH4
46 # include "sh4/bswap.h"
47 #elif ARCH_X86
48 # include "x86/bswap.h"
49 #endif
50
51 #endif /* HAVE_AV_CONFIG_H */
52
53 #define AV_BSWAP16C(x) (((x) << 8 & 0xff00) | ((x) >> 8 & 0x00ff))
54 #define AV_BSWAP32C(x) (AV_BSWAP16C(x) << 16 | AV_BSWAP16C((x) >> 16))
55 #define AV_BSWAP64C(x) (AV_BSWAP32C(x) << 32 | AV_BSWAP32C((x) >> 32))
56
57 #define AV_BSWAPC(s, x) AV_BSWAP##s##C(x)
58
59 #ifndef av_bswap16
60 1006365797 static av_always_inline av_const uint16_t av_bswap16(uint16_t x)
61 {
62 1006365797 x= (x>>8) | (x<<8);
63 1006365797 return x;
64 }
65 #endif
66
67 #ifndef av_bswap32
68 4013319678 static av_always_inline av_const uint32_t av_bswap32(uint32_t x)
69 {
70 4013319678 return AV_BSWAP32C(x);
71 }
72 #endif
73
74 #ifndef av_bswap64
75 389248546 static inline uint64_t av_const av_bswap64(uint64_t x)
76 {
77 389248546 return (uint64_t)av_bswap32(x) << 32 | av_bswap32(x >> 32);
78 }
79 #endif
80
81 // be2ne ... big-endian to native-endian
82 // le2ne ... little-endian to native-endian
83
84 #if AV_HAVE_BIGENDIAN
85 #define av_be2ne16(x) (x)
86 #define av_be2ne32(x) (x)
87 #define av_be2ne64(x) (x)
88 #define av_le2ne16(x) av_bswap16(x)
89 #define av_le2ne32(x) av_bswap32(x)
90 #define av_le2ne64(x) av_bswap64(x)
91 #define AV_BE2NEC(s, x) (x)
92 #define AV_LE2NEC(s, x) AV_BSWAPC(s, x)
93 #else
94 #define av_be2ne16(x) av_bswap16(x)
95 #define av_be2ne32(x) av_bswap32(x)
96 #define av_be2ne64(x) av_bswap64(x)
97 #define av_le2ne16(x) (x)
98 #define av_le2ne32(x) (x)
99 #define av_le2ne64(x) (x)
100 #define AV_BE2NEC(s, x) AV_BSWAPC(s, x)
101 #define AV_LE2NEC(s, x) (x)
102 #endif
103
104 #define AV_BE2NE16C(x) AV_BE2NEC(16, x)
105 #define AV_BE2NE32C(x) AV_BE2NEC(32, x)
106 #define AV_BE2NE64C(x) AV_BE2NEC(64, x)
107 #define AV_LE2NE16C(x) AV_LE2NEC(16, x)
108 #define AV_LE2NE32C(x) AV_LE2NEC(32, x)
109 #define AV_LE2NE64C(x) AV_LE2NEC(64, x)
110
111 #endif /* AVUTIL_BSWAP_H */
112