Point Cloud Library (PCL) 1.12.0
byte_order.h
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39
40#pragma once
41
42#include <boost/predef/other/endian.h>
43
44#include <cstddef>
45#include <utility> // for swap
46
47namespace pcl
48{
49 namespace io
50 {
51 namespace ply
52 {
53 /** \file byte_order.h
54 * defines byte shift operations and endianness.
55 * \author Ares Lagae as part of libply, Nizar Sallem
56 * \ingroup io
57 */
58
60 {
63#if BOOST_ENDIAN_BIG_BYTE
64 host_byte_order = big_endian_byte_order,
65#elif BOOST_ENDIAN_LITTLE_BYTE
66 host_byte_order = little_endian_byte_order,
67#else
68#error "unable to determine system endianness"
69#endif
71 };
72
73 template <std::size_t N>
74 void swap_byte_order (char* bytes);
75
76 template <>
77 inline void swap_byte_order<1> (char*) {}
78
79 template <>
80 inline void swap_byte_order<2> (char* bytes)
81 {
82 std::swap (bytes[0], bytes[1]);
83 }
84
85 template <>
86 inline void swap_byte_order<4> (char* bytes)
87 {
88 std::swap (bytes[0], bytes[3]);
89 std::swap (bytes[1], bytes[2]);
90 }
91
92 template <>
93 inline void swap_byte_order<8> (char* bytes)
94 {
95 std::swap (bytes[0], bytes[7]);
96 std::swap (bytes[1], bytes[6]);
97 std::swap (bytes[2], bytes[5]);
98 std::swap (bytes[3], bytes[4]);
99 }
100
101 template <typename T>
102 void swap_byte_order (T& value)
103 {
104 swap_byte_order<sizeof (T)> (reinterpret_cast<char*> (&value));
105 }
106
107 } // namespace ply
108 } // namespace io
109} // namespace pcl
void swap_byte_order(char *bytes)
void swap_byte_order< 1 >(char *)
Definition: byte_order.h:77
@ big_endian_byte_order
Definition: byte_order.h:62
@ network_byte_order
Definition: byte_order.h:70
@ little_endian_byte_order
Definition: byte_order.h:61
void swap_byte_order< 4 >(char *bytes)
Definition: byte_order.h:86
void swap_byte_order< 2 >(char *bytes)
Definition: byte_order.h:80
void swap_byte_order< 8 >(char *bytes)
Definition: byte_order.h:93