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
|
/*
* Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef WEBRTC_MODULES_RTP_RTCP_SOURCE_TMMBR_HELP_H_
#define WEBRTC_MODULES_RTP_RTCP_SOURCE_TMMBR_HELP_H_
#include <vector>
#include "webrtc/system_wrappers/interface/critical_section_wrapper.h"
#include "webrtc/typedefs.h"
namespace webrtc {
class TMMBRSet
{
public:
TMMBRSet();
~TMMBRSet();
void VerifyAndAllocateSet(uint32_t minimumSize);
void VerifyAndAllocateSetKeepingData(uint32_t minimumSize);
// Number of valid data items in set.
uint32_t lengthOfSet() const { return _lengthOfSet; }
// Presently allocated max size of set.
uint32_t sizeOfSet() const { return _sizeOfSet; }
void clearSet() {
_lengthOfSet = 0;
}
uint32_t Tmmbr(int i) const {
return _data.at(i).tmmbr;
}
uint32_t PacketOH(int i) const {
return _data.at(i).packet_oh;
}
uint32_t Ssrc(int i) const {
return _data.at(i).ssrc;
}
void SetEntry(unsigned int i,
uint32_t tmmbrSet,
uint32_t packetOHSet,
uint32_t ssrcSet);
void AddEntry(uint32_t tmmbrSet,
uint32_t packetOHSet,
uint32_t ssrcSet);
// Remove one entry from table, and move all others down.
void RemoveEntry(uint32_t sourceIdx);
void SwapEntries(uint32_t firstIdx,
uint32_t secondIdx);
// Set entry data to zero, but keep it in table.
void ClearEntry(uint32_t idx);
private:
class SetElement {
public:
SetElement() : tmmbr(0), packet_oh(0), ssrc(0) {}
uint32_t tmmbr;
uint32_t packet_oh;
uint32_t ssrc;
};
std::vector<SetElement> _data;
// Number of places allocated.
uint32_t _sizeOfSet;
// NUmber of places currently in use.
uint32_t _lengthOfSet;
};
class TMMBRHelp
{
public:
TMMBRHelp();
virtual ~TMMBRHelp();
TMMBRSet* BoundingSet(); // used for debuging
TMMBRSet* CandidateSet();
TMMBRSet* BoundingSetToSend();
TMMBRSet* VerifyAndAllocateCandidateSet(const uint32_t minimumSize);
int32_t FindTMMBRBoundingSet(TMMBRSet*& boundingSet);
int32_t SetTMMBRBoundingSetToSend(
const TMMBRSet* boundingSetToSend,
const uint32_t maxBitrateKbit);
bool IsOwner(const uint32_t ssrc, const uint32_t length) const;
bool CalcMinBitRate(uint32_t* minBitrateKbit) const;
protected:
TMMBRSet* VerifyAndAllocateBoundingSet(uint32_t minimumSize);
int32_t VerifyAndAllocateBoundingSetToSend(uint32_t minimumSize);
int32_t FindTMMBRBoundingSet(int32_t numCandidates, TMMBRSet& candidateSet);
private:
CriticalSectionWrapper* _criticalSection;
TMMBRSet _candidateSet;
TMMBRSet _boundingSet;
TMMBRSet _boundingSetToSend;
float* _ptrIntersectionBoundingSet;
float* _ptrMaxPRBoundingSet;
};
} // namespace webrtc
#endif // WEBRTC_MODULES_RTP_RTCP_SOURCE_TMMBR_HELP_H_
|
