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/*
Copyright 2008 Brain Research Institute, Melbourne, Australia
Written by J-Donald Tournier, 27/06/08.
This file is part of MRtrix.
MRtrix is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
MRtrix is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with MRtrix. If not, see <http://www.gnu.org/licenses/>.
31-10-2008 J-Donald Tournier <d.tournier@brain.org.au>
* replace get::T and put::T() methods with template get<T>() & put<T>() methods
* add get/put template specialisations for bool, int8 and uint8
* remove obsolete ArrayXX classes
* move MR::ByteOrder namespace & methods from lib/mrtrix.h to here
*/
#ifndef __get_set_h__
#define __get_set_h__
/** \defgroup Binary Binary access functions
* \brief functions to provide easy access to binary data. */
#include "mrtrix.h"
#define BITMASK 0x01U << 7
#if G_BYTE_ORDER == G_BIG_ENDIAN
#define MRTRIX_IS_BIG_ENDIAN true
#define TO_LE(v) swap(v)
#define TO_BE(v) v
#else
#define MRTRIX_IS_BIG_ENDIAN false
#define TO_LE(v) v
#define TO_BE(v) swap(v)
#endif
namespace MR {
/** \addtogroup Binary
* @{ */
namespace ByteOrder {
inline gint16 swap (gint16 v) { return (GUINT16_SWAP_LE_BE (v)); }
inline guint16 swap (guint16 v) { return (GUINT16_SWAP_LE_BE (v)); }
inline gint32 swap (gint32 v) { return (GUINT32_SWAP_LE_BE (v)); }
inline guint32 swap (guint32 v) { return (GUINT32_SWAP_LE_BE (v)); }
inline float32 swap (float32 v)
{
union { float32 f; guint32 i; } val = { v };
val.i = GUINT32_SWAP_LE_BE (val.i);
return (val.f);
}
inline float64 swap (float64 v)
{
union { float64 f; guint32 i[2]; } val = { v };
val.i[1] = swap (val.i[0]);
val.i[0] = swap (val.i[1]);
return (val.f);
}
inline gint16 LE (gint16 v) { return (GINT16_TO_LE (v)); }
inline gint16 BE (gint16 v) { return (GINT16_TO_BE (v)); }
inline guint16 LE (guint16 v) { return (GUINT16_TO_LE (v)); }
inline guint16 BE (guint16 v) { return (GUINT16_TO_BE (v)); }
inline gint32 LE (gint32 v) { return (GINT32_TO_LE (v)); }
inline gint32 BE (gint32 v) { return (GINT32_TO_BE (v)); }
inline guint32 LE (guint32 v) { return (GUINT32_TO_LE (v)); }
inline guint32 BE (guint32 v) { return (GUINT32_TO_BE (v)); }
inline float32 LE (float32 v) { return (TO_LE (v)); }
inline float32 BE (float32 v) { return (TO_BE (v)); }
inline float64 LE (float64 v) { return (TO_LE (v)); }
inline float64 BE (float64 v) { return (TO_BE (v)); }
}
template <typename T> inline T getLE (const void* address) { return (ByteOrder::LE (*((T*) address))); }
template <typename T> inline T getBE (const void* address) { return (ByteOrder::BE (*((T*) address))); }
template <typename T> inline T get (const void* address, bool is_big_endian = MRTRIX_IS_BIG_ENDIAN)
{ return (is_big_endian ? getBE<T> (address) : getLE<T> (address) ); }
template <typename T> inline void putLE (const T value, void* address) { *((T*) address) = ByteOrder::LE (value); }
template <typename T> inline void putBE (const T value, void* address) { *((T*) address) = ByteOrder::BE (value); }
template <typename T> inline void put (const T value, void* address, bool is_big_endian = MRTRIX_IS_BIG_ENDIAN)
{ is_big_endian ? putBE<T> (value, address) : putLE<T> (value, address); }
template <typename T> inline T getLE (const void* data, gsize i) { return (ByteOrder::LE (((T*) data)[i])); }
template <typename T> inline T getBE (const void* data, gsize i) { return (ByteOrder::BE (((T*) data)[i])); }
template <typename T> inline T get (const void* data, gsize i, bool is_big_endian = MRTRIX_IS_BIG_ENDIAN)
{ return (is_big_endian ? getBE<T> (data, i) : getLE<T> (data, i) ); }
template <typename T> inline void putLE (const T value, void* data, gsize i) { ((T*) data)[i] = ByteOrder::LE (value); }
template <typename T> inline void putBE (const T value, void* data, gsize i) { ((T*) data)[i] = ByteOrder::BE (value); }
template <typename T> inline void put (const T value, void* data, gsize i, bool is_big_endian = MRTRIX_IS_BIG_ENDIAN)
{ is_big_endian ? putBE<T> (value, data, i) : putLE<T> (value, data, i); }
template <> inline gint8 get<gint8> (const void* address, bool is_big_endian) { return (*((gint8*) address)); }
template <> inline gint8 get<gint8> (const void* data, gsize i, bool is_big_endian) { return (((gint8 *) data)[i]); }
template <> inline void put<gint8> (const gint8 value, void* address, bool is_big_endian) { *((gint8*) address) = value; }
template <> inline void put<gint8> (const gint8 value, void* data, gsize i, bool is_big_endian) { ((gint8 *) data)[i] = value; }
template <> inline guint8 get<guint8> (const void* address, bool is_big_endian) { return (*((guint8*) address)); }
template <> inline guint8 get<guint8> (const void* data, gsize i, bool is_big_endian) { return (((guint8 *) data)[i]); }
template <> inline void put<guint8> (const guint8 value, void* address, bool is_big_endian) { *((guint8*) address) = value; }
template <> inline void put<guint8> (const guint8 value, void* data, gsize i, bool is_big_endian) { ((guint8*) data)[i] = value; }
template <> inline bool get<bool> (const void* data, gsize i, bool is_big_endian)
{ return (((((guint8*) data)[i/8] << i%8) & BITMASK) ? true : false); }
template <> inline void put<bool> (const bool value, void* data, gsize i, bool is_big_endian)
{
if (value) ((guint8*) data)[i/8] |= (BITMASK >> i%8);
else ((guint8*) data)[i/8] &= ~(BITMASK >> i%8);
}
/** @} */
}
#endif
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