129 lines
3.7 KiB
C++
129 lines
3.7 KiB
C++
/*
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Free Asset Import Library (ASSIMP)
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----------------------------------------------------------------------
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Copyright (c) 2006-2008, ASSIMP Development Team
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All rights reserved.
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Redistribution and use of this software in source and binary forms,
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with or without modification, are permitted provided that the
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following conditions are met:
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* Redistributions of source code must retain the above
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copyright notice, this list of conditions and the
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following disclaimer.
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* Redistributions in binary form must reproduce the above
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copyright notice, this list of conditions and the
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following disclaimer in the documentation and/or other
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materials provided with the distribution.
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* Neither the name of the ASSIMP team, nor the names of its
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contributors may be used to endorse or promote products
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derived from this software without specific prior
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written permission of the ASSIMP Development Team.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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----------------------------------------------------------------------
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*/
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/** @file Helper class tp perform various byte oder swappings
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(e.g. little to big endian) */
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#ifndef AI_BYTESWAP_H_INC
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#define AI_BYTESWAP_H_INC
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#include "..\include\aiAssert.h"
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namespace Assimp
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{
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// ---------------------------------------------------------------------------
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/** \brief Defines some useful byte order swap routines.
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*
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* This can e.g. be used for the conversion from and to littel and big endian.
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* This is required by some loaders since some model formats
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*/
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class ByteSwap
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{
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ByteSwap() {}
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public:
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//! Swap the byte oder of 2 byte of data
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//! \param szOut Buffer to be swapped
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static inline void Swap2(char* szOut)
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{
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ai_assert(NULL != szOut);
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std::swap(szOut[0],szOut[1]);
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}
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//! Swap the byte oder of 4 byte of data
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//! \param szOut Buffer to be swapped
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static inline void Swap4(char* szOut)
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{
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ai_assert(NULL != szOut);
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std::swap(szOut[0],szOut[3]);
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std::swap(szOut[1],szOut[2]);
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}
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//! Swap the byte oder of 8 byte of data
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//! \param szOut Buffer to be swapped
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static inline void Swap8(char* szOut)
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{
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ai_assert(NULL != szOut);
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std::swap(szOut[0],szOut[7]);
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std::swap(szOut[1],szOut[6]);
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std::swap(szOut[2],szOut[5]);
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std::swap(szOut[3],szOut[4]);
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}
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//! Swap a single precision float
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//! \param fOut Float value to be swapped
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static inline void Swap(float* fOut)
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{
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Swap4((char*)fOut);
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}
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//! Swap a double precision float
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//! \param fOut Double value to be swapped
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static inline void Swap(double* fOut)
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{
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Swap8((char*)fOut);
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}
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//! Swap a 16 bit integer
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//! \param fOut Integer to be swapped
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static inline void Swap(int16_t* fOut)
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{
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Swap2((char*)fOut);
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}
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//! Swap a 32 bit integer
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//! \param fOut Integer to be swapped
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static inline void Swap(int32_t* fOut)
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{
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Swap4((char*)fOut);
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}
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//! Swap a 64 bit integer
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//! \param fOut Integer to be swapped
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static inline void Swap(int64_t* fOut)
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{
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Swap8((char*)fOut);
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}
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};
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};
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#endif //!! AI_BYTESWAP_H_INC
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