SingleMediaFileCache.h

Go to the documentation of this file.
00001 //===========================================================================
00002 //Copyright (C) 2003, 2004 Zentaro Kavanagh
00003 //
00004 //Redistribution and use in source and binary forms, with or without
00005 //modification, are permitted provided that the following conditions
00006 //are met:
00007 //
00008 //- Redistributions of source code must retain the above copyright
00009 //  notice, this list of conditions and the following disclaimer.
00010 //
00011 //- Redistributions in binary form must reproduce the above copyright
00012 //  notice, this list of conditions and the following disclaimer in the
00013 //  documentation and/or other materials provided with the distribution.
00014 //
00015 //- Neither the name of Zentaro Kavanagh nor the names of contributors 
00016 //  may be used to endorse or promote products derived from this software 
00017 //  without specific prior written permission.
00018 //
00019 //THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
00020 //``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
00021 //LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
00022 //PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE ORGANISATION OR
00023 //CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
00024 //EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
00025 //PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
00026 //PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
00027 //LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
00028 //NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
00029 //SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00030 //===========================================================================
00031 #pragma once
00032 
00033 //This class will be a cache of a single media file.
00034 //It will only allow a single chunk of data to be cached...
00035 // ie you can't cache bytes 0-1000 and 2000-3000...
00036 // only consecutive blocks for now.
00037 //
00038 //Data can be read randomly... but only written sequentially.
00039 //Will act as a buffer so that data read off the network can be put straight
00040 // into the file and then read as needed.
00041 
00042 #include <string>
00043 #include <fstream>
00044 using namespace std;
00045 class OGG_DEMUX_API SingleMediaFileCache
00046 {
00047 public:
00048         SingleMediaFileCache(void);
00049         ~SingleMediaFileCache(void);
00050 
00051         bool open(string inFileName);
00052         void close();
00053         bool write(const unsigned char* inBuff, unsigned long inBuffSize);
00054         unsigned long read(unsigned char* outBuff, unsigned long inBuffSize);
00055         bool readSeek(unsigned long inSeekPos);
00056         unsigned long totalBytes();
00057         unsigned long bytesAvail();
00058 
00059 protected:
00060         fstream mLocalFile;
00061 
00062         unsigned long mBytesWritten;
00063         unsigned long mReadPtr;
00064         
00065         //fstream debugLog;
00066         bool mIsComplete;
00067 };

Generated on Tue Feb 15 14:54:19 2005 for oggdsf by  doxygen 1.3.9