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路径: \\game3dprogramming\materials\GameFactory\GameFactoryDemo\references\ogre\include\OgreSerializer.h
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/*
-----------------------------------------------------------------------------
This source file is part of OGRE
    (Object-oriented Graphics Rendering Engine)
For the latest info, see http://www.ogre3d.org/

Copyright (c) 2000-2006 Torus Knot Software Ltd
Also see acknowledgements in Readme.html

This program is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by the Free Software
Foundation; either version 2 of the License, or (at your option) any later
version.

This program 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 program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place - Suite 330, Boston, MA 02111-1307, USA, or go to
http://www.gnu.org/copyleft/lesser.txt.

You may alternatively use this source under the terms of a specific version of
the OGRE Unrestricted License provided you have obtained such a license from
Torus Knot Software Ltd.
-----------------------------------------------------------------------------
*/

#ifndef __Serializer_H__
#define __Serializer_H__

#include "OgrePrerequisites.h"
#include "OgreString.h"
#include "OgreDataStream.h"

namespace Ogre {

    /** Generic class for serialising data to / from binary stream-based files.
    @remarks
        This class provides a number of useful methods for exporting / importing data
        from stream-oriented binary files (e.g. .mesh and .skeleton).
    */
    class _OgreExport Serializer
    {
    public:
        Serializer();
        virtual ~Serializer();

		/// The endianness of written files
		enum Endian
		{
			/// Use the platform native endian
			ENDIAN_NATIVE,
			/// Use big endian (0x1000 is serialised as 0x10 0x00)
			ENDIAN_BIG,
			/// Use little endian (0x1000 is serialised as 0x00 0x10)
			ENDIAN_LITTLE
		};


    protected:

        uint32 mCurrentstreamLen;
        FILE* mpfFile;
        String mVersion;
		bool mFlipEndian; // default to native endian, derive from header

        // Internal methods
        virtual void writeFileHeader(void);
        virtual void writeChunkHeader(uint16 id, size_t size);
        
        void writeFloats(const float* const pfloat, size_t count);
        void writeFloats(const double* const pfloat, size_t count);
        void writeShorts(const uint16* const pShort, size_t count);
        void writeInts(const uint32* const pInt, size_t count); 
        void writeBools(const bool* const pLong, size_t count);
        void writeObject(const Vector3& vec);
        void writeObject(const Quaternion& q);
        
        void writeString(const String& string);
        void writeData(const void* const buf, size_t size, size_t count);
        
        virtual void readFileHeader(DataStreamPtr& stream);
        virtual unsigned short readChunk(DataStreamPtr& stream);
        
        void readBools(DataStreamPtr& stream, bool* pDest, size_t count);
        void readFloats(DataStreamPtr& stream, float* pDest, size_t count);
        void readFloats(DataStreamPtr& stream, double* pDest, size_t count);
        void readShorts(DataStreamPtr& stream, uint16* pDest, size_t count);
        void readInts(DataStreamPtr& stream, uint32* pDest, size_t count);
        void readObject(DataStreamPtr& stream, Vector3& pDest);
        void readObject(DataStreamPtr& stream, Quaternion& pDest);

        String readString(DataStreamPtr& stream);
        String readString(DataStreamPtr& stream, size_t numChars);
        
        virtual void flipToLittleEndian(void* pData, size_t size, size_t count = 1);
        virtual void flipFromLittleEndian(void* pData, size_t size, size_t count = 1);
        
        virtual void flipEndian(void * pData, size_t size, size_t count);
        virtual void flipEndian(void * pData, size_t size);

		/// Determine the endianness of the incoming stream compared to native
		virtual void determineEndianness(DataStreamPtr& stream);
		/// Determine the endianness to write with based on option
		virtual void determineEndianness(Endian requestedEndian);
    };

}


#endif
OgreSerializer.h
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