+
−/* $Id$ */
+
−
+
−/*
+
− * This file is part of OpenTTD.
+
− * OpenTTD 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, version 2.
+
− * OpenTTD 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 OpenTTD. If not, see <http://www.gnu.org/licenses/>.
+
− */
+
−
+
−/** @file endian_func.hpp Function to handling different endian machines. */
+
−
+
−#ifndef ENDIAN_FUNC_HPP
+
−#define ENDIAN_FUNC_HPP
+
−
+
−#include "endian_type.hpp"
+
−#include "bitmath_func.hpp"
+
−
+
−/* Setup alignment and conversion macros */
+
−#if TTD_ENDIAN == TTD_BIG_ENDIAN
+
−	#define FROM_BE16(x) (x)
+
−	#define FROM_BE32(x) (x)
+
−	#define TO_BE16(x)   (x)
+
−	#define TO_BE32(x)   (x)
+
−	#define TO_BE32X(x)  (x)
+
−	#define FROM_LE16(x) BSWAP16(x)
+
−	#define FROM_LE32(x) BSWAP32(x)
+
−	#define TO_LE16(x)   BSWAP16(x)
+
−	#define TO_LE32(x)   BSWAP32(x)
+
−	#define TO_LE32X(x)  BSWAP32(x)
+
−#else
+
−	#define FROM_BE16(x) BSWAP16(x)
+
−	#define FROM_BE32(x) BSWAP32(x)
+
−	#define TO_BE16(x)   BSWAP16(x)
+
−	#define TO_BE32(x)   BSWAP32(x)
+
−	#define TO_BE32X(x)  BSWAP32(x)
+
−	#define FROM_LE16(x) (x)
+
−	#define FROM_LE32(x) (x)
+
−	#define TO_LE16(x)   (x)
+
−	#define TO_LE32(x)   (x)
+
−	#define TO_LE32X(x)  (x)
+
−#endif /* TTD_ENDIAN == TTD_BIG_ENDIAN */
+
−
+
−static inline uint16 ReadLE16Aligned(const void *x)
+
−{
+
−	return FROM_LE16(*(const uint16*)x);
+
−}
+
−
+
−static inline uint16 ReadLE16Unaligned(const void *x)
+
−{
+
−#if OTTD_ALIGNMENT == 1
+
−	return ((const byte*)x)[0] | ((const byte*)x)[1] << 8;
+
−#else
+
−	return FROM_LE16(*(const uint16*)x);
+
−#endif /* OTTD_ALIGNMENT == 1 */
+
−}
+
−
+
−#endif /* ENDIAN_FUNC_HPP */