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BufferedIO.hpp

00001  /***********************************************************************
00002  *                                                                      *
00003  * ViTooKi                                                              *
00004  *                                                                      *
00005  * title:       BufferedIO.hpp                                               *
00006  *                                                                      *
00007  *                                                                      *
00008  *                                                                      *
00009  * ITEC institute of the University of Klagenfurt (Austria)             *
00010  * http://www.itec.uni-klu.ac.at                                        *
00011  *                                                                      *
00012  *                                                                      *
00013  * For more information visit the ViTooKi homepage:                     *
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00016  * vitooki-devel@lists.sourceforge.net                                  *
00017  *                                                                      *
00018  * This file is part of ViTooKi, a free video toolkit.                  *
00019  * ViTooKi is free software; you can redistribute it and/or             *
00020  * modify it under the terms of the GNU General Public License          *
00021  * as published by the Free Software Foundation; either version 2       *
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00023  *                                                                      *
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00027  * GNU General Public License for more details.                         *
00028  *                                                                      *
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00035 
00036  /***********************************************************************
00037  *                                                                      *
00038  *  REVISION HISTORY:                                                   *
00039  *                                                                      *
00040  *                                                                      *
00041  *                                                                      *
00042  ***********************************************************************/
00043 
00044 #ifndef _MK_BUFFEREDIO_HPP_
00045 #define _MK_BUFFEREDIO_HPP_
00046 
00047 #include "IO.hpp"
00048 #include "io/MuxDemuxIO.hpp"
00049 #include "Frame.hpp"
00050 #include "global.hpp"
00051 
00052 //Forward declaration
00053 class MuxDemuxIO;
00054 
00066 class BufferedIO:public IO {
00067 public:
00068         /* If writeonly is true only write access
00069          * is permitted, otherwise the file is read-only, url is deep-copied
00070          */
00071         BufferedIO(ESInfo * es, MuxDemuxIO *muxio, bool writeOnly);
00072 
00073         virtual ~ BufferedIO();
00074 
00075 
00080         virtual Frame *getFrame();
00081         
00083         virtual int writeFrame(Frame * frm, ESInfo *out_es = NULL);
00084         
00087         bool open();
00088 
00089         bool close(bool immediate=false);
00090 
00092         bool destroy();
00093         
00095         int getBufferFillLevel() const {
00096                 return buffer.size();
00097         };
00098         
00099         IO *clone() const { return new BufferedIO(es,muxio,writeOnly);};
00100         
00102         const char *getURL() const {
00103                 return NULL;
00104         };
00105 
00106         void setESInfo(ESInfo * esi) {es=esi; };
00107 
00108         ESInfo* getESInfo() { return es; };             
00109 
00110         void addToBuffer(Frame *frm) {  buffer.push_back(frm); };
00111 
00112         /* finds out, what would be the next CTS in Buffer, if getFrame() _would_ be called */
00113         //long long int nextCTSinBuf();
00114         s64 nextCTSinBuf();
00115 
00116 private:
00117 
00118 
00119 protected:
00120         bool writeOnly;
00121         ESInfo *es;
00122         MuxDemuxIO *muxio;
00123         bool atFileStart;
00124         long lastCTSSeen;
00125         
00126 
00127         list<Frame*> buffer;
00128 };
00129 
00130 #endif