152 lines
3.8 KiB
C
152 lines
3.8 KiB
C
|
/***************************************************************************
|
||
|
|
copyright : (C) 2013 by Tsuda Kageyu
|
||
|
|
email : tsuda.kageyu@gmail.com
|
||
|
|
***************************************************************************/
|
||
|
|
|
||
|
|
/***************************************************************************
|
||
|
|
* This library is free software; you can redistribute it and/or modify *
|
||
|
|
* it under the terms of the GNU Lesser General Public License version *
|
||
|
|
* 2.1 as published by the Free Software Foundation. *
|
||
|
|
* *
|
||
|
|
* 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 *
|
||
|
|
* Lesser General Public License for more details. *
|
||
|
|
* *
|
||
|
|
* You should have received a copy of the GNU Lesser General Public *
|
||
|
|
* License along with this library; if not, write to the Free Software *
|
||
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA *
|
||
|
|
* 02110-1301 USA *
|
||
|
|
* *
|
||
|
|
* Alternatively, this file is available under the Mozilla Public *
|
||
|
|
* License Version 1.1. You may obtain a copy of the License at *
|
||
|
|
* http://www.mozilla.org/MPL/ *
|
||
|
|
***************************************************************************/
|
||
|
|
|
||
|
|
#ifndef TAGLIB_TUTILS_H
|
||
|
|
#define TAGLIB_TUTILS_H
|
||
|
|
|
||
|
|
// THIS FILE IS NOT A PART OF THE TAGLIB API
|
||
|
|
|
||
|
|
#ifndef DO_NOT_DOCUMENT // tell Doxygen not to document this header
|
||
|
|
|
||
|
|
#ifdef HAVE_CONFIG_H
|
||
|
|
#include <config.h>
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if defined(HAVE_MSC_BYTESWAP)
|
||
|
|
# include <stdlib.h>
|
||
|
|
#elif defined(HAVE_GLIBC_BYTESWAP)
|
||
|
|
# include <byteswap.h>
|
||
|
|
#elif defined(HAVE_MAC_BYTESWAP)
|
||
|
|
# include <libkern/OSByteOrder.h>
|
||
|
|
#elif defined(HAVE_OPENBSD_BYTESWAP)
|
||
|
|
# include <sys/endian.h>
|
||
|
|
#endif
|
||
|
|
|
||
|
|
namespace TagLib
|
||
|
|
{
|
||
|
|
|
||
|
|
inline ushort byteSwap(ushort x)
|
||
|
|
{
|
||
|
|
#if defined(HAVE_GCC_BYTESWAP_16)
|
||
|
|
|
||
|
|
return __builtin_bswap16(x);
|
||
|
|
|
||
|
|
#elif defined(HAVE_MSC_BYTESWAP)
|
||
|
|
|
||
|
|
return _byteswap_ushort(x);
|
||
|
|
|
||
|
|
#elif defined(HAVE_GLIBC_BYTESWAP)
|
||
|
|
|
||
|
|
return __bswap_16(x);
|
||
|
|
|
||
|
|
#elif defined(HAVE_MAC_BYTESWAP)
|
||
|
|
|
||
|
|
return OSSwapInt16(x);
|
||
|
|
|
||
|
|
#elif defined(HAVE_OPENBSD_BYTESWAP)
|
||
|
|
|
||
|
|
return swap16(x);
|
||
|
|
|
||
|
|
#else
|
||
|
|
|
||
|
|
return ((x >> 8) & 0xff) | ((x & 0xff) << 8);
|
||
|
|
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
inline uint byteSwap(uint x)
|
||
|
|
{
|
||
|
|
#if defined(HAVE_GCC_BYTESWAP_32)
|
||
|
|
|
||
|
|
return __builtin_bswap32(x);
|
||
|
|
|
||
|
|
#elif defined(HAVE_MSC_BYTESWAP)
|
||
|
|
|
||
|
|
return _byteswap_ulong(x);
|
||
|
|
|
||
|
|
#elif defined(HAVE_GLIBC_BYTESWAP)
|
||
|
|
|
||
|
|
return __bswap_32(x);
|
||
|
|
|
||
|
|
#elif defined(HAVE_MAC_BYTESWAP)
|
||
|
|
|
||
|
|
return OSSwapInt32(x);
|
||
|
|
|
||
|
|
#elif defined(HAVE_OPENBSD_BYTESWAP)
|
||
|
|
|
||
|
|
return swap32(x);
|
||
|
|
|
||
|
|
#else
|
||
|
|
|
||
|
|
return ((x & 0xff000000u) >> 24)
|
||
|
|
| ((x & 0x00ff0000u) >> 8)
|
||
|
|
| ((x & 0x0000ff00u) << 8)
|
||
|
|
| ((x & 0x000000ffu) << 24);
|
||
|
|
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
inline ulonglong byteSwap(ulonglong x)
|
||
|
|
{
|
||
|
|
#if defined(HAVE_GCC_BYTESWAP_64)
|
||
|
|
|
||
|
|
return __builtin_bswap64(x);
|
||
|
|
|
||
|
|
#elif defined(HAVE_MSC_BYTESWAP)
|
||
|
|
|
||
|
|
return _byteswap_uint64(x);
|
||
|
|
|
||
|
|
#elif defined(HAVE_GLIBC_BYTESWAP)
|
||
|
|
|
||
|
|
return __bswap_64(x);
|
||
|
|
|
||
|
|
#elif defined(HAVE_MAC_BYTESWAP)
|
||
|
|
|
||
|
|
return OSSwapInt64(x);
|
||
|
|
|
||
|
|
#elif defined(HAVE_OPENBSD_BYTESWAP)
|
||
|
|
|
||
|
|
return swap64(x);
|
||
|
|
|
||
|
|
#else
|
||
|
|
|
||
|
|
return ((x & 0xff00000000000000ull) >> 56)
|
||
|
|
| ((x & 0x00ff000000000000ull) >> 40)
|
||
|
|
| ((x & 0x0000ff0000000000ull) >> 24)
|
||
|
|
| ((x & 0x000000ff00000000ull) >> 8)
|
||
|
|
| ((x & 0x00000000ff000000ull) << 8)
|
||
|
|
| ((x & 0x0000000000ff0000ull) << 24)
|
||
|
|
| ((x & 0x000000000000ff00ull) << 40)
|
||
|
|
| ((x & 0x00000000000000ffull) << 56);
|
||
|
|
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
};
|
||
|
|
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif
|