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byte_order.h
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/*
* Software License Agreement (BSD License)
*
* Point Cloud Library (PCL) - www.pointclouds.org
* Copyright (c) 2007-2012, Ares Lagae
* Copyright (c) 2012, Willow Garage, Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
* * Neither the name of the copyright holder(s) nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* $Id$
*
*/
#pragma once
#include <boost/predef/other/endian.h>
#include <cstddef>
#include <utility> // for swap
namespace pcl
{
namespace io
{
namespace ply
{
/** \file byte_order.h
* defines byte shift operations and endianness.
* \author Ares Lagae as part of libply, Nizar Sallem
* \ingroup io
*/
enum byte_order
{
little_endian_byte_order,
big_endian_byte_order,
#if BOOST_ENDIAN_BIG_BYTE
host_byte_order = big_endian_byte_order,
#elif BOOST_ENDIAN_LITTLE_BYTE
host_byte_order = little_endian_byte_order,
#else
#error "unable to determine system endianness"
#endif
network_byte_order = big_endian_byte_order
};
template <std::size_t N>
void swap_byte_order (char* bytes);
template <>
inline void swap_byte_order<1> (char*) {}
template <>
inline void swap_byte_order<2> (char* bytes)
{
std::swap (bytes[0], bytes[1]);
}
template <>
inline void swap_byte_order<4> (char* bytes)
{
std::swap (bytes[0], bytes[3]);
std::swap (bytes[1], bytes[2]);
}
template <>
inline void swap_byte_order<8> (char* bytes)
{
std::swap (bytes[0], bytes[7]);
std::swap (bytes[1], bytes[6]);
std::swap (bytes[2], bytes[5]);
std::swap (bytes[3], bytes[4]);
}
template <typename T>
void swap_byte_order (T& value)
{
swap_byte_order<sizeof (T)> (reinterpret_cast<char*> (&value));
}
} // namespace ply
} // namespace io
} // namespace pcl
pcl::io::ply
Definition byte_order.h:52
pcl::io::ply::swap_byte_order
void swap_byte_order(char *bytes)
pcl::io::ply::swap_byte_order< 1 >
void swap_byte_order< 1 >(char *)
Definition byte_order.h:77
pcl::io::ply::byte_order
byte_order
Definition byte_order.h:60
pcl::io::ply::big_endian_byte_order
@ big_endian_byte_order
Definition byte_order.h:62
pcl::io::ply::network_byte_order
@ network_byte_order
Definition byte_order.h:70
pcl::io::ply::little_endian_byte_order
@ little_endian_byte_order
Definition byte_order.h:61
pcl::io::ply::swap_byte_order< 4 >
void swap_byte_order< 4 >(char *bytes)
Definition byte_order.h:86
pcl::io::ply::swap_byte_order< 2 >
void swap_byte_order< 2 >(char *bytes)
Definition byte_order.h:80
pcl::io::ply::swap_byte_order< 8 >
void swap_byte_order< 8 >(char *bytes)
Definition byte_order.h:93
pcl::io
Definition io.h:517
pcl
Definition convolution.h:46