Mercurial > hg > orthanc-wsi
annotate Resources/Orthanc/Core/Endianness.h @ 98:ff0ef01c332c
shared copyright with osimis
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Wed, 04 Jan 2017 16:43:25 +0100 |
parents | 7a3853d51c45 |
children | a18bfe1fdd62 |
rev | line source |
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1 | 1 /** |
2 * Orthanc - A Lightweight, RESTful DICOM Store | |
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
4 * Department, University Hospital of Liege, Belgium | |
98
ff0ef01c332c
shared copyright with osimis
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
59
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changeset
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5 * Copyright (C) 2017 Osimis, Belgium |
1 | 6 * |
7 * This program is free software: you can redistribute it and/or | |
8 * modify it under the terms of the GNU General Public License as | |
9 * published by the Free Software Foundation, either version 3 of the | |
10 * License, or (at your option) any later version. | |
11 * | |
12 * In addition, as a special exception, the copyright holders of this | |
13 * program give permission to link the code of its release with the | |
14 * OpenSSL project's "OpenSSL" library (or with modified versions of it | |
15 * that use the same license as the "OpenSSL" library), and distribute | |
16 * the linked executables. You must obey the GNU General Public License | |
17 * in all respects for all of the code used other than "OpenSSL". If you | |
18 * modify file(s) with this exception, you may extend this exception to | |
19 * your version of the file(s), but you are not obligated to do so. If | |
20 * you do not wish to do so, delete this exception statement from your | |
21 * version. If you delete this exception statement from all source files | |
22 * in the program, then also delete it here. | |
23 * | |
24 * This program is distributed in the hope that it will be useful, but | |
25 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
27 * General Public License for more details. | |
28 * | |
29 * You should have received a copy of the GNU General Public License | |
30 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
31 **/ | |
32 | |
33 | |
34 #pragma once | |
35 | |
36 | |
37 /******************************************************************** | |
38 ** LINUX ARCHITECTURES | |
39 ********************************************************************/ | |
40 | |
41 #if defined(__linux__) | |
42 # define ORTHANC_HAS_BUILTIN_BYTE_SWAP 1 | |
43 # include <endian.h> | |
44 #endif | |
45 | |
46 | |
47 /******************************************************************** | |
48 ** WINDOWS ARCHITECTURES | |
49 ** | |
50 ** On Windows x86, "host" will always be little-endian ("le"). | |
51 ********************************************************************/ | |
52 | |
53 #if defined(_WIN32) | |
54 # if defined(_MSC_VER) | |
55 // Visual Studio - http://msdn.microsoft.com/en-us/library/a3140177.aspx | |
56 # define ORTHANC_HAS_BUILTIN_BYTE_SWAP 1 | |
57 # define be16toh(x) _byteswap_ushort(x) | |
58 # define be32toh(x) _byteswap_ulong(x) | |
59 # define be64toh(x) _byteswap_uint64(x) | |
60 # elif (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)) | |
61 // MinGW >= 4.3 - Use builtin intrinsic for byte swapping | |
62 # define ORTHANC_HAS_BUILTIN_BYTE_SWAP 1 | |
63 # define be16toh(x) __builtin_bswap16(x) | |
64 # define be32toh(x) __builtin_bswap32(x) | |
65 # define be64toh(x) __builtin_bswap64(x) | |
66 # else | |
67 // MinGW <= 4.2, we must manually implement the byte swapping | |
68 # define ORTHANC_HAS_BUILTIN_BYTE_SWAP 0 | |
69 # define be16toh(x) __orthanc_bswap16(x) | |
70 # define be32toh(x) __orthanc_bswap32(x) | |
71 # define be64toh(x) __orthanc_bswap64(x) | |
72 # endif | |
73 | |
74 # define htobe16(x) be16toh(x) | |
75 # define htobe32(x) be32toh(x) | |
76 # define htobe64(x) be64toh(x) | |
77 | |
78 # define htole16(x) x | |
79 # define htole32(x) x | |
80 # define htole64(x) x | |
81 | |
82 # define le16toh(x) x | |
83 # define le32toh(x) x | |
84 # define le64toh(x) x | |
85 #endif | |
86 | |
87 | |
88 /******************************************************************** | |
89 ** FREEBSD ARCHITECTURES | |
90 ********************************************************************/ | |
91 | |
92 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) | |
93 # define ORTHANC_HAS_BUILTIN_BYTE_SWAP 1 | |
94 # include <arpa/inet.h> | |
95 #endif | |
96 | |
97 | |
98 /******************************************************************** | |
99 ** APPLE ARCHITECTURES (including OS X) | |
100 ********************************************************************/ | |
101 | |
102 #if defined(__APPLE__) | |
103 # define ORTHANC_HAS_BUILTIN_BYTE_SWAP 1 | |
104 # include <libkern/OSByteOrder.h> | |
105 # define be16toh(x) OSSwapBigToHostInt16(x) | |
106 # define be32toh(x) OSSwapBigToHostInt32(x) | |
107 # define be64toh(x) OSSwapBigToHostInt64(x) | |
108 | |
109 # define htobe16(x) OSSwapHostToBigInt16(x) | |
110 # define htobe32(x) OSSwapHostToBigInt32(x) | |
111 # define htobe64(x) OSSwapHostToBigInt64(x) | |
112 | |
113 # define htole16(x) OSSwapHostToLittleInt16(x) | |
114 # define htole32(x) OSSwapHostToLittleInt32(x) | |
115 # define htole64(x) OSSwapHostToLittleInt64(x) | |
116 | |
117 # define le16toh(x) OSSwapLittleToHostInt16(x) | |
118 # define le32toh(x) OSSwapLittleToHostInt32(x) | |
119 # define le64toh(x) OSSwapLittleToHostInt64(x) | |
120 #endif | |
121 | |
122 | |
123 /******************************************************************** | |
124 ** PORTABLE (BUT SLOW) IMPLEMENTATION OF BYTE-SWAPPING | |
125 ********************************************************************/ | |
126 | |
127 #if ORTHANC_HAS_BUILTIN_BYTE_SWAP != 1 | |
128 | |
129 #include <stdint.h> | |
130 | |
131 static inline uint16_t __orthanc_bswap16(uint16_t a) | |
132 { | |
133 return (a << 8) | (a >> 8); | |
134 } | |
135 | |
136 static inline uint32_t __orthanc_bswap32(uint32_t a) | |
137 { | |
138 const uint8_t* p = reinterpret_cast<const uint8_t*>(&a); | |
139 return (static_cast<uint32_t>(p[0]) << 24 | | |
140 static_cast<uint32_t>(p[1]) << 16 | | |
141 static_cast<uint32_t>(p[2]) << 8 | | |
142 static_cast<uint32_t>(p[3])); | |
143 } | |
144 | |
145 static inline uint64_t __orthanc_bswap64(uint64_t a) | |
146 { | |
147 const uint8_t* p = reinterpret_cast<const uint8_t*>(&a); | |
148 return (static_cast<uint64_t>(p[0]) << 56 | | |
149 static_cast<uint64_t>(p[1]) << 48 | | |
150 static_cast<uint64_t>(p[2]) << 40 | | |
151 static_cast<uint64_t>(p[3]) << 32 | | |
152 static_cast<uint64_t>(p[4]) << 24 | | |
153 static_cast<uint64_t>(p[5]) << 16 | | |
154 static_cast<uint64_t>(p[6]) << 8 | | |
155 static_cast<uint64_t>(p[7])); | |
156 } | |
157 | |
158 #endif |