2 * AbstractAdaptationLogic.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 it
11 * 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 Lesser 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 Foundation,
22 * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
23 *****************************************************************************/
28 #include "AbstractAdaptationLogic.h"
30 using namespace dash::logic;
31 using namespace dash::mpd;
32 using namespace dash::http;
34 AbstractAdaptationLogic::AbstractAdaptationLogic (MPD *mpd_) :
36 currentPeriod (mpd->getFirstPeriod())
41 AbstractAdaptationLogic::~AbstractAdaptationLogic ()
45 void AbstractAdaptationLogic::reset()
48 prevRepresentation = NULL;
51 Chunk* AbstractAdaptationLogic::getNextChunk(Streams::Type type)
58 if(prevRepresentation && !prevRepresentation->canBitswitch())
59 rep = prevRepresentation;
61 rep = getCurrentRepresentation(type);
66 bool reinit = count && (rep != prevRepresentation);
67 prevRepresentation = rep;
69 std::vector<ISegment *> segments = rep->getSegments();
70 ISegment *first = segments.empty() ? NULL : segments.front();
72 if (reinit && first && first->getClassId() == InitSegment::CLASSID_INITSEGMENT)
73 return first->toChunk(count, rep);
75 bool b_templated = (first && !first->isSingleShot());
77 if (count == segments.size() && !b_templated)
79 currentPeriod = mpd->getNextPeriod(currentPeriod);
81 return getNextChunk(type);
85 if ( segments.size() > count )
87 seg = segments.at( count );
91 seg = segments.back();
96 Chunk *chunk = seg->toChunk(count, rep);
104 void AbstractAdaptationLogic::updateDownloadRate (size_t, mtime_t)