HTTPFileSource.h

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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 #include "oggdllstuff.h"
00033 #include <winsock.h>
00034 #include "HTTPSocket.h"
00035 #include "SingleMediaFileCache.h"
00036 #include <string>
00037 #include <sstream>
00038 #include <fstream>
00039 
00040 using namespace std;
00041 
00042 class OGG_DEMUX_API HTTPFileSource
00043         :       public IFilterDataSource
00044         ,       public CAMThread
00045         ,       protected HTTPSocket    
00046 {
00047 public:
00048         HTTPFileSource(void);
00049         virtual ~HTTPFileSource(void);
00050 
00051         //Thread commands
00052         static const int THREAD_RUN = 0;
00053         static const int THREAD_EXIT = 1;
00054 
00055         //IFilterDataSource Interface
00056         virtual unsigned long seek(unsigned long inPos);
00057         virtual void close() ;
00058         virtual bool open(string inSourceLocation);
00059         virtual void clear();
00060         virtual bool isEOF();
00061         virtual unsigned long read(char* outBuffer, unsigned long inNumBytes);
00062 
00063         //CAMThread pure virtuals
00064         DWORD HTTPFileSource::ThreadProc();
00065 
00066 protected:
00067         void unChunk(unsigned char* inBuff, unsigned long inNumBytes);
00068         bool startThread();
00069         void DataProcessLoop();
00070 
00071         SingleMediaFileCache mFileCache;
00072 
00073         bool mIsChunked;
00074         unsigned long mChunkRemains;
00075 
00076         bool mIsFirstChunk;
00077 
00078         fstream debugLog;
00079         fstream fileDump;
00080         fstream rawDump;
00081 
00082         unsigned char* mInterBuff;
00083         unsigned long mNumLeftovers;
00084         static  const unsigned long RECV_BUFF_SIZE = 1024;
00085 
00086         CCritSec* mBufferLock;
00087 };

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