OgreDeflate.h
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    00001 /*
    00002  -----------------------------------------------------------------------------
    00003  This source file is part of OGRE
    00004  (Object-oriented Graphics Rendering Engine)
    00005  For the latest info, see http://www.ogre3d.org/
    00006
    00007  Copyright (c) 2000-2012 Torus Knot Software Ltd
    00008
    00009  Permission is hereby granted, free of charge, to any person obtaining a copy
    00010  of this software and associated documentation files (the "Software"), to deal
    00011  in the Software without restriction, including without limitation the rights
    00012  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
    00013  copies of the Software, and to permit persons to whom the Software is
    00014  furnished to do so, subject to the following conditions:
    00015
    00016  The above copyright notice and this permission notice shall be included in
    00017  all copies or substantial portions of the Software.
    00018
    00019  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    00020  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    00021  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
    00022  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    00023  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    00024  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
    00025  THE SOFTWARE.
    00026  -----------------------------------------------------------------------------
    00027  */
    00028 #ifndef __OGRE_DEFLATE_H__
    00029 #define __OGRE_DEFLATE_H__
    00030
    00031 #include "OgrePrerequisites.h"
    00032 #include "OgreDataStream.h"
    00033
    00034
    00036 struct z_stream_s;
    00037 typedef struct z_stream_s z_stream;
    00038
    00039 namespace Ogre
    00040 {
    00055     class _OgreExport DeflateStream : public DataStream
    00056     {
    00057     protected:
    00058         DataStreamPtr mCompressedStream;
    00059         DataStreamPtr mTmpWriteStream;
    00060         String mTempFileName;
    00061         z_stream* mZStream;
    00062         size_t mCurrentPos;
    00063
    00065         StaticCache<16 * OGRE_STREAM_TEMP_SIZE> mReadCache;
    00066
    00068         unsigned char *mTmp;
    00069
    00071         bool mIsCompressedValid;
    00072
    00073
    00074         void init();
    00075         void destroy();
    00076         void compressFinal();
    00077     public:
    00083         DeflateStream(const DataStreamPtr& compressedStream, const String& tmpFileName = "");
    00090         DeflateStream(const String& name, const DataStreamPtr& compressedStream, const String& tmpFileName="");
    00091
    00092         ~DeflateStream();
    00093
    00100         bool isCompressedStreamValid() const { return mIsCompressedValid; }
    00101
    00104         size_t read(void* buf, size_t count);
    00105
    00108         size_t write(const void* buf, size_t count);
    00109
    00112         void skip(long count);
    00113
    00116         void seek( size_t pos );
    00117
    00120         size_t tell(void) const;
    00121
    00124         bool eof(void) const;
    00125
    00128         void close(void);
    00129
    00130     };
    00131 }
    00132
    00133 #endif

Copyright © 2012 Torus Knot Software Ltd
This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.
Last modified Sun Sep 2 2012 07:27:21