libgphoto2 photo camera library (libgphoto2) API
2.5.32
Loading...
Searching...
No Matches
gphoto2-endian.h
1
/* This file is generated automatically by configure */
2
/* It is valid only for the system type x86_64-w64-mingw32 */
3
4
#ifndef GP_BYTEORDER_H
5
#define GP_BYTEORDER_H
6
7
/* Use these as generic byteswapping macros on this little endian system */
8
/* on windows we might not have ntohs / ntohl without including winsock.dll,
9
* so use generic macros */
10
#ifdef __HAVE_NTOHL
11
# define swap16(x) htons(x)
12
# define swap32(x) htonl(x)
13
#else
14
# define swap16(x) ((uint16_t)(((x) << 8) | ((uint16_t)(x) >> 8)))
15
# define swap32(x) ((uint32_t)((((uint32_t)(x) << 24) & 0xff000000UL) | \
16
(((uint32_t)(x) << 8) & 0x00ff0000UL) | \
17
(((x) >> 8) & 0x0000ff00UL) | \
18
(((x) >> 24) & 0x000000ffUL)))
19
#endif
20
/* No optimized 64 bit byte swapping macro is available */
21
#define swap64(x) ((uint64_t)((((uint64_t)(x) << 56) & 0xff00000000000000ULL) | \
22
(((uint64_t)(x) << 40) & 0x00ff000000000000ULL) | \
23
(((uint64_t)(x) << 24) & 0x0000ff0000000000ULL) | \
24
(((uint64_t)(x) << 8) & 0x000000ff00000000ULL) | \
25
(((x) >> 8) & 0x00000000ff000000ULL) | \
26
(((x) >> 24) & 0x0000000000ff0000ULL) | \
27
(((x) >> 40) & 0x000000000000ff00ULL) | \
28
(((x) >> 56) & 0x00000000000000ffULL)))
29
30
/* The byte swapping macros have the form: */
31
/* EENN[a]toh or htoEENN[a] where EE is be (big endian) or */
32
/* le (little-endian), NN is 16 or 32 (number of bits) and a, */
33
/* if present, indicates that the endian side is a pointer to an */
34
/* array of uint8_t bytes instead of an integer of the specified length. */
35
/* h refers to the host's ordering method. */
36
37
/* So, to convert a 32-bit integer stored in a buffer in little-endian */
38
/* format into a uint32_t usable on this machine, you could use: */
39
/* uint32_t value = le32atoh(&buf[3]); */
40
/* To put that value back into the buffer, you could use: */
41
/* htole32a(&buf[3], value); */
42
43
/* Define aliases for the standard byte swapping macros */
44
/* Arguments to these macros must be properly aligned on natural word */
45
/* boundaries in order to work properly on all architectures */
46
#ifndef htobe16
47
# ifdef __HAVE_NTOHL
48
# define htobe16(x) htons(x)
49
# else
50
# ifdef WORDS_BIGENDIAN
51
# define htobe16(x) (x)
52
# else
53
# define htobe16(x) swap16(x)
54
# endif
55
# endif
56
#endif
57
#ifndef htobe32
58
# ifdef __HAVE_NTOHL
59
# define htobe32(x) htonl(x)
60
# else
61
# ifdef WORDS_BIGENDIAN
62
# define htobe32(x) (x)
63
# else
64
# define htobe32(x) swap32(x)
65
# endif
66
# endif
67
#endif
68
#ifndef be16toh
69
# define be16toh(x) htobe16(x)
70
#endif
71
#ifndef be32toh
72
# define be32toh(x) htobe32(x)
73
#endif
74
75
#define HTOBE16(x) (x) = htobe16(x)
76
#define HTOBE32(x) (x) = htobe32(x)
77
#define BE32TOH(x) (x) = be32toh(x)
78
#define BE16TOH(x) (x) = be16toh(x)
79
80
/* On little endian machines, these macros are null */
81
#ifndef htole16
82
# define htole16(x) (x)
83
#endif
84
#ifndef htole32
85
# define htole32(x) (x)
86
#endif
87
#ifndef htole64
88
# define htole64(x) (x)
89
#endif
90
#ifndef le16toh
91
# define le16toh(x) (x)
92
#endif
93
#ifndef le32toh
94
# define le32toh(x) (x)
95
#endif
96
#ifndef le64toh
97
# define le64toh(x) (x)
98
#endif
99
100
#define HTOLE16(x) (void) (x)
101
#define HTOLE32(x) (void) (x)
102
#define HTOLE64(x) (void) (x)
103
#define LE16TOH(x) (void) (x)
104
#define LE32TOH(x) (void) (x)
105
#define LE64TOH(x) (void) (x)
106
107
/* These don't have standard aliases */
108
#ifndef htobe64
109
# define htobe64(x) swap64(x)
110
#endif
111
#ifndef be64toh
112
# define be64toh(x) swap64(x)
113
#endif
114
115
#define HTOBE64(x) (x) = htobe64(x)
116
#define BE64TOH(x) (x) = be64toh(x)
117
118
/* Define the C99 standard length-specific integer types */
119
#include <stdint.h>
120
121
/* Here are some macros to create integers from a byte array */
122
/* These are used to get and put integers from/into a uint8_t array */
123
/* with a specific endianness. This is the most portable way to generate */
124
/* and read messages to a network or serial device. Each member of a */
125
/* packet structure must be handled separately. */
126
127
/* Non-optimized but portable macros */
128
#define be16atoh(x) ((uint16_t)(((x)[0]<<8)|(x)[1]))
129
#define be32atoh(x) ((uint32_t)(((x)[0]<<24)|((x)[1]<<16)|((x)[2]<<8)|(x)[3]))
130
#define be64atoh_x(x,off,shift) (((uint64_t)((x)[off]))<<shift)
131
#define be64atoh(x) ((uint64_t)(be64atoh_x(x,0,56)|be64atoh_x(x,1,48)|be64atoh_x(x,2,40)| \
132
be64atoh_x(x,3,32)|be64atoh_x(x,4,24)|be64atoh_x(x,5,16)|be64atoh_x(x,6,8)|((x)[7])))
133
#define le16atoh(x) ((uint16_t)(((x)[1]<<8)|(x)[0]))
134
#define le32atoh(x) ((uint32_t)(((x)[3]<<24)|((x)[2]<<16)|((x)[1]<<8)|(x)[0]))
135
#define le64atoh_x(x,off,shift) (((uint64_t)(x)[off])<<shift)
136
#define le64atoh(x) ((uint64_t)(le64atoh_x(x,7,56)|le64atoh_x(x,6,48)|le64atoh_x(x,5,40)| \
137
le64atoh_x(x,4,32)|le64atoh_x(x,3,24)|le64atoh_x(x,2,16)|le64atoh_x(x,1,8)|((x)[0])))
138
139
#define htobe16a(a,x) (a)[0]=(uint8_t)((x)>>8), (a)[1]=(uint8_t)(x)
140
#define htobe32a(a,x) (a)[0]=(uint8_t)((x)>>24), (a)[1]=(uint8_t)((x)>>16), \
141
(a)[2]=(uint8_t)((x)>>8), (a)[3]=(uint8_t)(x)
142
#define htobe64a(a,x) (a)[0]=(uint8_t)((x)>>56), (a)[1]=(uint8_t)((x)>>48), \
143
(a)[2]=(uint8_t)((x)>>40), (a)[3]=(uint8_t)((x)>>32), \
144
(a)[4]=(uint8_t)((x)>>24), (a)[5]=(uint8_t)((x)>>16), \
145
(a)[6]=(uint8_t)((x)>>8), (a)[7]=(uint8_t)(x)
146
#define htole16a(a,x) (a)[1]=(uint8_t)((x)>>8), (a)[0]=(uint8_t)(x)
147
#define htole32a(a,x) (a)[3]=(uint8_t)((x)>>24), (a)[2]=(uint8_t)((x)>>16), \
148
(a)[1]=(uint8_t)((x)>>8), (a)[0]=(uint8_t)(x)
149
#define htole64a(a,x) (a)[7]=(uint8_t)((x)>>56), (a)[6]=(uint8_t)((x)>>48), \
150
(a)[5]=(uint8_t)((x)>>40), (a)[4]=(uint8_t)((x)>>32), \
151
(a)[3]=(uint8_t)((x)>>24), (a)[2]=(uint8_t)((x)>>16), \
152
(a)[1]=(uint8_t)((x)>>8), (a)[0]=(uint8_t)(x)
153
154
#endif
/* GP_BYTEORDER_H */
libgphoto2
gphoto2-endian.h
Generated by
1.14.0