1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
|
/*
* 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.
*/
#include "BufferBasedAdaptation.h"
#include<stdio.h>
using namespace dash::mpd;
using namespace libdash::framework::adaptation;
using namespace libdash::framework::input;
using namespace libdash::framework::mpd;
BufferBasedAdaptation::BufferBasedAdaptation (IMPD *mpd, IPeriod *period, IAdaptationSet *adaptationSet, bool isVid, struct AdaptationParameters *params) :
AbstractAdaptationLogic (mpd, period, adaptationSet, isVid)
{
this->reservoirThreshold = params->BufferBased_reservoirThreshold;
this->maxThreshold = params->BufferBased_maxThreshold;
std::vector<IRepresentation* > representations = this->adaptationSet->GetRepresentation();
this->representation = this->adaptationSet->GetRepresentation().at(0);
this->multimediaManager = NULL;
this->lastBufferFill = 0;
this->bufferEOS = false;
this->shouldAbort = false;
Debug("BufferBasedParams:\t%f\t%f\n", (double)reservoirThreshold/100, (double)maxThreshold/100);
Debug("Buffer Adaptation: STARTED\n");
}
BufferBasedAdaptation::~BufferBasedAdaptation ()
{
}
LogicType BufferBasedAdaptation::getType()
{
return adaptation::BufferBased;
}
bool BufferBasedAdaptation::isUserDependent()
{
return false;
}
bool BufferBasedAdaptation::isRateBased()
{
return false;
}
bool BufferBasedAdaptation::isBufferBased()
{
return true;
}
void BufferBasedAdaptation::setMultimediaManager (viper::managers::IMultimediaManagerBase *_mmManager)
{
this->multimediaManager = _mmManager;
}
void BufferBasedAdaptation::notifyBitrateChange()
{
if(this->multimediaManager)
if(this->multimediaManager->isStarted() && !this->multimediaManager->isStopping())
if(this->isVideo)
this->multimediaManager->setVideoQuality(this->period, this->adaptationSet, this->representation);
else
this->multimediaManager->setAudioQuality(this->period, this->adaptationSet, this->representation);
if(this->shouldAbort)
{
this->multimediaManager->shouldAbort(this->isVideo);
}
this->shouldAbort = false;
}
uint64_t BufferBasedAdaptation::getBitrate()
{
return this->currentBitrate;
}
void BufferBasedAdaptation::setBitrate(uint32_t bufferFill)
{
std::vector<IRepresentation *> representations;
representations = this->adaptationSet->GetRepresentation();
size_t i = 0;
if(representations.size() == 1)
{
i = 0;
}
else
{
while(bufferFill > this->reservoirThreshold + i * (this->maxThreshold - this->reservoirThreshold)/(representations.size()-1))
{
i++;
}
}
if((size_t)i >= (size_t)(representations.size()))
i = representations.size() - 1;
this->representation = representations.at(i);
if( 0 && !this->bufferEOS && this->lastBufferFill > this->reservoirThreshold && bufferFill <= this->reservoirThreshold)
{
this->shouldAbort = true;
}
Debug("ADAPTATION_LOGIC:\tFor %s:\tlast_buffer: %f\tbuffer_level: %f, choice: %lu, should_trigger_abort: %s\n",isVideo ? "video" : "audio",(double)lastBufferFill/100 , (double)bufferFill/100, i, this->shouldAbort ? "YES" : "NO");
this->lastBufferFill = bufferFill;
}
void BufferBasedAdaptation::bitrateUpdate(uint64_t bps, uint32_t segNum)
{
}
void BufferBasedAdaptation::dLTimeUpdate(double time)
{
}
void BufferBasedAdaptation::onEOS(bool value)
{
this->bufferEOS = value;
}
void BufferBasedAdaptation::checkedByDASHReceiver()
{
}
void BufferBasedAdaptation::bufferUpdate(uint32_t bufferFill, int maxC)
{
this->setBitrate(bufferFill);
this->notifyBitrateChange();
}
|
