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/*
Audio File Library
Copyright (C) 1998-1999, 2010-2011, Michael Pruett <michael@68k.org>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307 USA.
*/
#ifndef BYTEORDER_H
#define BYTEORDER_H
#include "config.h"
#include <stdint.h>
#if WORDS_BIGENDIAN
#define _AF_BYTEORDER_NATIVE (AF_BYTEORDER_BIGENDIAN)
#else
#define _AF_BYTEORDER_NATIVE (AF_BYTEORDER_LITTLEENDIAN)
#endif
inline uint16_t _af_byteswap_int16 (uint16_t x)
{
return (x >> 8) | (x << 8);
}
inline uint32_t _af_byteswap_int32 (uint32_t x)
{
return ((x & 0x000000ffU) << 24) |
((x & 0x0000ff00U) << 8) |
((x & 0x00ff0000U) >> 8) |
((x & 0xff000000U) >> 24);
}
inline uint64_t _af_byteswap_int64 (uint64_t x)
{
return ((x & 0x00000000000000ffULL) << 56) |
((x & 0x000000000000ff00ULL) << 40) |
((x & 0x0000000000ff0000ULL) << 24) |
((x & 0x00000000ff000000ULL) << 8) |
((x & 0x000000ff00000000ULL) >> 8) |
((x & 0x0000ff0000000000ULL) >> 24) |
((x & 0x00ff000000000000ULL) >> 40) |
((x & 0xff00000000000000ULL) >> 56);
}
inline float _af_byteswap_float32 (float x)
{
union
{
uint32_t i;
float f;
} u;
u.f = x;
u.i = _af_byteswap_int32(u.i);
return u.f;
}
inline double _af_byteswap_float64 (double x)
{
union
{
uint64_t i;
double f;
} u;
u.f = x;
u.i = _af_byteswap_int64(u.i);
return u.f;
}
inline uint64_t byteswap(uint64_t value) { return _af_byteswap_int64(value); }
inline int64_t byteswap(int64_t value) { return _af_byteswap_int64(value); }
inline uint32_t byteswap(uint32_t value) { return _af_byteswap_int32(value); }
inline int32_t byteswap(int32_t value) { return _af_byteswap_int32(value); }
inline uint16_t byteswap(uint16_t value) { return _af_byteswap_int16(value); }
inline int16_t byteswap(int16_t value) { return _af_byteswap_int16(value); }
inline double byteswap(double value) { return _af_byteswap_float64(value); }
inline float byteswap(float value) { return _af_byteswap_float32(value); }
template <typename T>
T bigToHost(T value)
{
return _AF_BYTEORDER_NATIVE == AF_BYTEORDER_BIGENDIAN ? value : byteswap(value);
}
template <typename T>
T littleToHost(T value)
{
return _AF_BYTEORDER_NATIVE == AF_BYTEORDER_LITTLEENDIAN ? value : byteswap(value);
}
template <typename T>
T hostToBig(T value)
{
return _AF_BYTEORDER_NATIVE == AF_BYTEORDER_BIGENDIAN ? value : byteswap(value);
}
template <typename T>
T hostToLittle(T value)
{
return _AF_BYTEORDER_NATIVE == AF_BYTEORDER_LITTLEENDIAN ? value : byteswap(value);
}
#endif
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