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1 /* | 1 /* |
2 * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2012 The WebRTC project authors. All Rights Reserved. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license | 4 * Use of this source code is governed by a BSD-style license |
5 * that can be found in the LICENSE file in the root of the source | 5 * that can be found in the LICENSE file in the root of the source |
6 * tree. An additional intellectual property rights grant can be found | 6 * tree. An additional intellectual property rights grant can be found |
7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
9 */ | 9 */ |
10 | 10 |
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49 virtual void OnNetworkChanged(uint32_t bitrate_bps, | 49 virtual void OnNetworkChanged(uint32_t bitrate_bps, |
50 uint8_t fraction_loss, // 0 - 255. | 50 uint8_t fraction_loss, // 0 - 255. |
51 int64_t rtt_ms) = 0; | 51 int64_t rtt_ms) = 0; |
52 | 52 |
53 protected: | 53 protected: |
54 virtual ~Observer() {} | 54 virtual ~Observer() {} |
55 }; | 55 }; |
56 CongestionController(Clock* clock, | 56 CongestionController(Clock* clock, |
57 Observer* observer, | 57 Observer* observer, |
58 RemoteBitrateObserver* remote_bitrate_observer, | 58 RemoteBitrateObserver* remote_bitrate_observer, |
59 RtcEventLog* event_log); | |
60 CongestionController(Clock* clock, | |
61 Observer* observer, | |
62 RemoteBitrateObserver* remote_bitrate_observer, | |
63 RtcEventLog* event_log, | 59 RtcEventLog* event_log, |
64 std::unique_ptr<PacketRouter> packet_router, | 60 PacketRouter* packet_router); |
| 61 CongestionController(Clock* clock, |
| 62 Observer* observer, |
| 63 RemoteBitrateObserver* remote_bitrate_observer, |
| 64 RtcEventLog* event_log, |
| 65 PacketRouter* packet_router, |
65 std::unique_ptr<PacedSender> pacer); | 66 std::unique_ptr<PacedSender> pacer); |
66 virtual ~CongestionController(); | 67 virtual ~CongestionController(); |
67 | 68 |
68 virtual void SetBweBitrates(int min_bitrate_bps, | 69 virtual void SetBweBitrates(int min_bitrate_bps, |
69 int start_bitrate_bps, | 70 int start_bitrate_bps, |
70 int max_bitrate_bps); | 71 int max_bitrate_bps); |
71 // Resets both the BWE state and the bitrate estimator. Note the first | 72 // Resets both the BWE state and the bitrate estimator. Note the first |
72 // argument is the bitrate_bps. | 73 // argument is the bitrate_bps. |
73 virtual void ResetBweAndBitrates(int bitrate_bps, | 74 virtual void ResetBweAndBitrates(int bitrate_bps, |
74 int min_bitrate_bps, | 75 int min_bitrate_bps, |
75 int max_bitrate_bps); | 76 int max_bitrate_bps); |
76 virtual void SignalNetworkState(NetworkState state); | 77 virtual void SignalNetworkState(NetworkState state); |
77 virtual BitrateController* GetBitrateController() const; | 78 virtual BitrateController* GetBitrateController() const; |
78 virtual RemoteBitrateEstimator* GetRemoteBitrateEstimator( | 79 virtual RemoteBitrateEstimator* GetRemoteBitrateEstimator( |
79 bool send_side_bwe); | 80 bool send_side_bwe); |
80 virtual int64_t GetPacerQueuingDelayMs() const; | 81 virtual int64_t GetPacerQueuingDelayMs() const; |
81 virtual PacedSender* pacer() { return pacer_.get(); } | 82 virtual PacedSender* pacer() { return pacer_.get(); } |
82 virtual PacketRouter* packet_router() { return packet_router_.get(); } | |
83 virtual TransportFeedbackObserver* GetTransportFeedbackObserver(); | 83 virtual TransportFeedbackObserver* GetTransportFeedbackObserver(); |
84 RateLimiter* GetRetransmissionRateLimiter(); | 84 RateLimiter* GetRetransmissionRateLimiter(); |
85 | 85 |
86 // SetAllocatedSendBitrateLimits sets bitrates limits imposed by send codec | 86 // SetAllocatedSendBitrateLimits sets bitrates limits imposed by send codec |
87 // settings. | 87 // settings. |
88 // |min_send_bitrate_bps| is the total minimum send bitrate required by all | 88 // |min_send_bitrate_bps| is the total minimum send bitrate required by all |
89 // sending streams. This is the minimum bitrate the PacedSender will use. | 89 // sending streams. This is the minimum bitrate the PacedSender will use. |
90 // Note that CongestionController::OnNetworkChanged can still be called with | 90 // Note that CongestionController::OnNetworkChanged can still be called with |
91 // a lower bitrate estimate. | 91 // a lower bitrate estimate. |
92 // |max_padding_bitrate_bps| is the max bitrate the send streams request for | 92 // |max_padding_bitrate_bps| is the max bitrate the send streams request for |
93 // padding. This can be higher than the current network estimate and tells | 93 // padding. This can be higher than the current network estimate and tells |
94 // the PacedSender how much it should max pad unless there is real packets to | 94 // the PacedSender how much it should max pad unless there is real packets to |
95 // send. | 95 // send. |
96 void SetAllocatedSendBitrateLimits(int min_send_bitrate_bps, | 96 void SetAllocatedSendBitrateLimits(int min_send_bitrate_bps, |
97 int max_padding_bitrate_bps); | 97 int max_padding_bitrate_bps); |
98 | 98 |
99 virtual void OnSentPacket(const rtc::SentPacket& sent_packet); | 99 virtual void OnSentPacket(const rtc::SentPacket& sent_packet); |
100 | 100 |
101 // Implements CallStatsObserver. | 101 // Implements CallStatsObserver. |
102 void OnRttUpdate(int64_t avg_rtt_ms, int64_t max_rtt_ms) override; | 102 void OnRttUpdate(int64_t avg_rtt_ms, int64_t max_rtt_ms) override; |
103 | 103 |
104 // Implements Module. | 104 // Implements Module. |
105 int64_t TimeUntilNextProcess() override; | 105 int64_t TimeUntilNextProcess() override; |
106 void Process() override; | 106 void Process() override; |
107 | 107 |
108 private: | 108 private: |
109 void Init(); | |
110 void MaybeTriggerOnNetworkChanged(); | 109 void MaybeTriggerOnNetworkChanged(); |
111 | 110 |
112 bool IsSendQueueFull() const; | 111 bool IsSendQueueFull() const; |
113 bool IsNetworkDown() const; | 112 bool IsNetworkDown() const; |
114 bool HasNetworkParametersToReportChanged(uint32_t bitrate_bps, | 113 bool HasNetworkParametersToReportChanged(uint32_t bitrate_bps, |
115 uint8_t fraction_loss, | 114 uint8_t fraction_loss, |
116 int64_t rtt); | 115 int64_t rtt); |
117 Clock* const clock_; | 116 Clock* const clock_; |
118 Observer* const observer_; | 117 Observer* const observer_; |
119 const std::unique_ptr<PacketRouter> packet_router_; | 118 PacketRouter* const packet_router_; |
120 const std::unique_ptr<PacedSender> pacer_; | 119 const std::unique_ptr<PacedSender> pacer_; |
121 const std::unique_ptr<RemoteBitrateEstimator> remote_bitrate_estimator_; | 120 const std::unique_ptr<RemoteBitrateEstimator> remote_bitrate_estimator_; |
122 const std::unique_ptr<BitrateController> bitrate_controller_; | 121 const std::unique_ptr<BitrateController> bitrate_controller_; |
123 const std::unique_ptr<ProbeController> probe_controller_; | 122 const std::unique_ptr<ProbeController> probe_controller_; |
124 const std::unique_ptr<RateLimiter> retransmission_rate_limiter_; | 123 const std::unique_ptr<RateLimiter> retransmission_rate_limiter_; |
125 RemoteEstimatorProxy remote_estimator_proxy_; | 124 RemoteEstimatorProxy remote_estimator_proxy_; |
126 TransportFeedbackAdapter transport_feedback_adapter_; | 125 TransportFeedbackAdapter transport_feedback_adapter_; |
127 int min_bitrate_bps_; | 126 int min_bitrate_bps_; |
128 int max_bitrate_bps_; | 127 int max_bitrate_bps_; |
129 rtc::CriticalSection critsect_; | 128 rtc::CriticalSection critsect_; |
130 uint32_t last_reported_bitrate_bps_ GUARDED_BY(critsect_); | 129 uint32_t last_reported_bitrate_bps_ GUARDED_BY(critsect_); |
131 uint8_t last_reported_fraction_loss_ GUARDED_BY(critsect_); | 130 uint8_t last_reported_fraction_loss_ GUARDED_BY(critsect_); |
132 int64_t last_reported_rtt_ GUARDED_BY(critsect_); | 131 int64_t last_reported_rtt_ GUARDED_BY(critsect_); |
133 NetworkState network_state_ GUARDED_BY(critsect_); | 132 NetworkState network_state_ GUARDED_BY(critsect_); |
134 | 133 |
135 RTC_DISALLOW_IMPLICIT_CONSTRUCTORS(CongestionController); | 134 RTC_DISALLOW_IMPLICIT_CONSTRUCTORS(CongestionController); |
136 }; | 135 }; |
137 | 136 |
138 } // namespace webrtc | 137 } // namespace webrtc |
139 | 138 |
140 #endif // WEBRTC_MODULES_CONGESTION_CONTROLLER_INCLUDE_CONGESTION_CONTROLLER_H_ | 139 #endif // WEBRTC_MODULES_CONGESTION_CONTROLLER_INCLUDE_CONGESTION_CONTROLLER_H_ |
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