147 lines
2.2 KiB
C++
147 lines
2.2 KiB
C++
/**
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* =========================================================================
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* File : byte_order.cpp
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* Project : 0 A.D.
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* Description : byte order (endianness) support routines.
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*
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* @author Jan.Wassenberg@stud.uni-karlsruhe.de
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* =========================================================================
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*/
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/*
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* Copyright (c) 2003 Jan Wassenberg
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*
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* Redistribution and/or modification are also permitted under the
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* terms of the GNU General Public License as published by the
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* Free Software Foundation (version 2 or later, at your option).
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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*/
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#include "precompiled.h"
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#include "byte_order.h"
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#include "sdl.h"
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u16 to_le16(u16 x)
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{
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#if SDL_BYTE_ORDER == SDL_BIG_ENDIAN
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return SDL_Swap16(x);
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#else
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return x;
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#endif
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}
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u32 to_le32(u32 x)
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{
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#if SDL_BYTE_ORDER == SDL_BIG_ENDIAN
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return SDL_Swap32(x);
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#else
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return x;
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#endif
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}
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u64 to_le64(u64 x)
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{
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#if SDL_BYTE_ORDER == SDL_BIG_ENDIAN
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return SDL_Swap64(x);
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#else
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return x;
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#endif
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}
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u16 to_be16(u16 x)
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{
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#if SDL_BYTE_ORDER == SDL_BIG_ENDIAN
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return x;
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#else
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return SDL_Swap16(x);
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#endif
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}
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u32 to_be32(u32 x)
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{
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#if SDL_BYTE_ORDER == SDL_BIG_ENDIAN
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return x;
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#else
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return SDL_Swap32(x);
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#endif
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}
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u64 to_be64(u64 x)
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{
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#if SDL_BYTE_ORDER == SDL_BIG_ENDIAN
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return x;
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#else
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return SDL_Swap64(x);
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#endif
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}
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u16 read_le16(const void* p)
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{
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return to_le16(*(u16*)p);
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}
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u32 read_le32(const void* p)
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{
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return to_le32(*(u32*)p);
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}
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u64 read_le64(const void* p)
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{
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return to_le64(*(u64*)p);
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}
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u16 read_be16(const void* p)
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{
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return to_be16(*(u16*)p);
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}
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u32 read_be32(const void* p)
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{
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return to_be32(*(u32*)p);
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}
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u64 read_be64(const void* p)
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{
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return to_be64(*(u64*)p);
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}
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void write_le16(void* p, u16 x)
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{
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*(u16*)p = to_le16(x);
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}
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void write_le32(void* p, u32 x)
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{
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*(u32*)p = to_le32(x);
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}
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void write_le64(void* p, u64 x)
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{
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*(u64*)p = to_le64(x);
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}
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void write_be16(void* p, u16 x)
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{
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*(u16*)p = to_be16(x);
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}
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void write_be32(void* p, u32 x)
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{
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*(u32*)p = to_be32(x);
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}
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void write_be64(void* p, u64 x)
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{
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*(u64*)p = to_be64(x);
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}
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