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AdmissionControl.hpp

00001 
00002  /***********************************************************************
00003  *                                                                      *
00004  * ViTooKi                                                              *
00005  *                                                                      *
00006  * title:       AdmissionControl.hpp                                          *
00007  *                                                                      *
00008  *                                                                      *
00009  *                                                                      *
00010  * ITEC institute of the University of Klagenfurt (Austria)             *
00011  * http://www.itec.uni-klu.ac.at                                        *
00012  *                                                                      *
00013  *                                                                      *
00014  * For more information visit the ViTooKi homepage:                     *
00015  * http://ViTooKi.sourceforge.net                                       *
00016  * vitooki-user@lists.sourceforge.net                                   *
00017  * vitooki-devel@lists.sourceforge.net                                  *
00018  *                                                                      *
00019  * This file is part of ViTooKi, a free video toolkit.                  *
00020  * ViTooKi is free software; you can redistribute it and/or             *
00021  * modify it under the terms of the GNU General Public License          *
00022  * as published by the Free Software Foundation; either version 2       *
00023  * of the License, or (at your option) any later version.               *
00024  *                                                                      *
00025  * This program is distributed in the hope that it will be useful,      *
00026  * but WITHOUT ANY WARRANTY; without even the implied warranty of       *
00027  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the         *
00028  * GNU General Public License for more details.                         *
00029  *                                                                      *
00030  * You should have received a copy of the GNU General Public License    *
00031  * along with this program; if not, write to the Free Software          *
00032  * Foundation, Inc., 59 Temple Place - Suite 330, Boston,               *
00033  * MA  02111-1307, USA.                                                 *
00034  *                                                                      *
00035  ***********************************************************************/
00036 
00037  /***********************************************************************
00038  *                                                                      *
00039  *  REVISION HISTORY:                                                   *
00040  *                                                                      *
00041  *                                                                      *
00042  *                                                                      *
00043  ***********************************************************************/
00044 
00045 #ifndef PS_VITOOKI_ADMISSIONCONTROL
00046 #define PS_VITOOKI_ADMISSIONCONTROL
00047 #include "cache/CostFunction.hpp"
00048 #include "global.hpp"
00049 #include "VMutex.hpp"
00050 
00051 #define MAX_JOB_ENTRIES 1024
00052 
00053 typedef struct Request{
00054         UserPreferences up;
00055         Video sourceVideo;
00056         unsigned long startTime;
00057         unsigned long endTime; // calculated as video.duration+startTime
00058         Request(const UserPreferences& u, const Video& vid,unsigned long start,unsigned long end):up(u),sourceVideo(vid)
00059         {
00060                 startTime=start;
00061                 endTime=end;
00062         }
00063         ~Request() {
00064         };
00065 } Request;
00066 
00067 class AdmissionControl
00068 {
00069 protected:
00070         ResourceLimit* limit;
00071         ResourcePrices* prices;
00072         ResourceUsage currentUsage;
00073         VMutex lock;
00074         int activeRequests;
00075         
00077         bool canAdmitRequest(const ResourceUsage* usage);       
00078 public:
00079         AdmissionControl(const ResourceLimit* lim,const ResourcePrices* p);
00080         ~AdmissionControl();
00081 
00082         const ResourceLimit* getResourceLimit() const {
00083                 return limit;
00084         }
00085 
00086 
00088         bool insertRequest(const ResourceUsage* usage);
00089 
00091         bool freeRequest(const ResourceUsage* usage);
00092 
00107         Adaptor* makeExactMatch(unsigned int dimX, unsigned int dimY, 
00108                                                         unsigned int bitRate, 
00109                                                         bool greyScale, float frameRate,
00110                                                         ContainerInfo* stream,ResourceUsage* ru,bool allowHigherThanSrcBitRate=false);
00111 
00121         Adaptor* makeBestMatch(const UserPreferences* up,
00122                         int delayToServer,
00123                         MetaObject* meta,
00124                         /* out parameters */
00125                         ContainerInfo** outStream, ResourceUsage* ru);
00126 
00127 };
00128 
00129 #endif
00130