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/*
* Copyright (c) 2017 Cisco and/or its affiliates.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef LIBDASH_FRAMEWORK_ADAPTATION_PANDA_H_
#define LIBDASH_FRAMEWORK_ADAPTATION_PANDA_H_
#include "AbstractAdaptationLogic.h"
#include "../MPD/AdaptationSetStream.h"
#include "../Input/IDASHReceiverObserver.h"
namespace libdash
{
namespace framework
{
namespace adaptation
{
class PandaAdaptation : public AbstractAdaptationLogic
{
public:
PandaAdaptation(dash::mpd::IMPD *mpd, dash::mpd::IPeriod *period, dash::mpd::IAdaptationSet *adaptationSet, bool isVid, struct AdaptationParameters *params);
virtual ~PandaAdaptation();
virtual LogicType getType();
virtual bool isUserDependent();
virtual bool isRateBased();
virtual bool isBufferBased();
virtual void bitrateUpdate(uint64_t bps, uint32_t segNum);
virtual void dLTimeUpdate(double time);
virtual void bufferUpdate(uint32_t bufferFill, int maxC);
void setBitrate(uint64_t bufferFill);
uint64_t getBitrate();
virtual void setMultimediaManager(viper::managers::IMultimediaManagerBase *_mmManager);
void notifyBitrateChange();
void onEOS(bool value);
void checkedByDASHReceiver();
void quantizer();
private:
uint64_t currentBitrate;
std::vector<uint64_t> availableBitrates;
viper::managers::IMultimediaManagerBase *multimediaManager;
dash::mpd::IRepresentation *representation;
uint64_t averageBw; // Classic EWMA
uint64_t instantBw;
uint64_t smoothBw; // Panda paper smoothed y[n]
uint64_t targetBw; // Panda paper x[n] bw estimation
double param_Alpha;
double alpha_ewma;
double param_Epsilon;
double param_K;
double param_W;
double param_Beta;
double param_Bmin;
double interTime; // Actual inter time
double targetInterTime; // Target inter time
double downloadTime;
uint32_t bufferLevel;
uint32_t lastBufferLevel;
double bufferMaxSizeSeconds; // Usually set to 60s
double bufferLevelSeconds; // Current buffer level [s]
double segmentDuration;
double deltaUp;
double deltaDown;
size_t current;
};
} /* namespace adaptation */
} /* namespace framework */
} /* namespace libdash */
#endif /* LIBDASH_FRAMEWORK_ADAPTATION_PANDA_H_ */
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