2 * RateBasedAdaptationLogic.cpp
3 *****************************************************************************
4 * Copyright (C) 2010 - 2011 Klagenfurt University
6 * Created on: Aug 10, 2010
7 * Authors: Christopher Mueller <christopher.mueller@itec.uni-klu.ac.at>
8 * Christian Timmerer <christian.timmerer@itec.uni-klu.ac.at>
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU Lesser General Public License as published
12 * by the Free Software Foundation; either version 2.1 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU Lesser General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
23 *****************************************************************************/
28 #include "RateBasedAdaptationLogic.h"
30 using namespace dash::logic;
31 using namespace dash::xml;
32 using namespace dash::http;
33 using namespace dash::mpd;
34 using namespace dash::exception;
36 RateBasedAdaptationLogic::RateBasedAdaptationLogic (IMPDManager *mpdManager, stream_t *stream) :
37 AbstractAdaptationLogic (mpdManager, stream),
38 mpdManager (mpdManager),
40 currentPeriod (mpdManager->getFirstPeriod()),
44 this->width = var_InheritInteger(stream, "dash-prefwidth");
45 this->height = var_InheritInteger(stream, "dash-prefheight");
48 Chunk* RateBasedAdaptationLogic::getNextChunk() throw(EOFException)
50 if(this->mpdManager == NULL)
53 if(this->currentPeriod == NULL)
56 long bitrate = this->getBpsAvg();
58 Representation *rep = this->mpdManager->getRepresentation(this->currentPeriod, bitrate, this->width, this->height);
63 std::vector<Segment *> segments = this->mpdManager->getSegments(rep);
65 if ( this->count == segments.size() )
67 this->currentPeriod = this->mpdManager->getNextPeriod(this->currentPeriod);
69 return this->getNextChunk();
72 if ( segments.size() > this->count )
74 Segment *seg = segments.at( this->count );
75 Chunk *chunk = seg->toChunk();
76 //In case of UrlTemplate, we must stay on the same segment.
77 if ( seg->isSingleShot() == true )
85 const Representation *RateBasedAdaptationLogic::getCurrentRepresentation() const
87 return this->mpdManager->getRepresentation( this->currentPeriod, this->getBpsAvg() );