| /* |
| * Copyright (c) 2018 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 MODULES_CONGESTION_CONTROLLER_GOOG_CC_GOOG_CC_NETWORK_CONTROL_H_ |
| #define MODULES_CONGESTION_CONTROLLER_GOOG_CC_GOOG_CC_NETWORK_CONTROL_H_ |
| |
| #include <stdint.h> |
| |
| #include <deque> |
| #include <memory> |
| #include <vector> |
| |
| #include "absl/types/optional.h" |
| #include "api/field_trials_view.h" |
| #include "api/network_state_predictor.h" |
| #include "api/rtc_event_log/rtc_event_log.h" |
| #include "api/transport/field_trial_based_config.h" |
| #include "api/transport/network_control.h" |
| #include "api/transport/network_types.h" |
| #include "api/units/data_rate.h" |
| #include "api/units/data_size.h" |
| #include "api/units/timestamp.h" |
| #include "modules/congestion_controller/goog_cc/acknowledged_bitrate_estimator_interface.h" |
| #include "modules/congestion_controller/goog_cc/alr_detector.h" |
| #include "modules/congestion_controller/goog_cc/congestion_window_pushback_controller.h" |
| #include "modules/congestion_controller/goog_cc/delay_based_bwe.h" |
| #include "modules/congestion_controller/goog_cc/probe_controller.h" |
| #include "modules/congestion_controller/goog_cc/send_side_bandwidth_estimation.h" |
| #include "rtc_base/experiments/field_trial_parser.h" |
| #include "rtc_base/experiments/rate_control_settings.h" |
| |
| namespace webrtc { |
| struct GoogCcConfig { |
| std::unique_ptr<NetworkStateEstimator> network_state_estimator = nullptr; |
| std::unique_ptr<NetworkStatePredictor> network_state_predictor = nullptr; |
| bool feedback_only = false; |
| }; |
| |
| class GoogCcNetworkController : public NetworkControllerInterface { |
| public: |
| GoogCcNetworkController(NetworkControllerConfig config, |
| GoogCcConfig goog_cc_config); |
| |
| GoogCcNetworkController() = delete; |
| GoogCcNetworkController(const GoogCcNetworkController&) = delete; |
| GoogCcNetworkController& operator=(const GoogCcNetworkController&) = delete; |
| |
| ~GoogCcNetworkController() override; |
| |
| // NetworkControllerInterface |
| NetworkControlUpdate OnNetworkAvailability(NetworkAvailability msg) override; |
| NetworkControlUpdate OnNetworkRouteChange(NetworkRouteChange msg) override; |
| NetworkControlUpdate OnProcessInterval(ProcessInterval msg) override; |
| NetworkControlUpdate OnRemoteBitrateReport(RemoteBitrateReport msg) override; |
| NetworkControlUpdate OnRoundTripTimeUpdate(RoundTripTimeUpdate msg) override; |
| NetworkControlUpdate OnSentPacket(SentPacket msg) override; |
| NetworkControlUpdate OnReceivedPacket(ReceivedPacket msg) override; |
| NetworkControlUpdate OnStreamsConfig(StreamsConfig msg) override; |
| NetworkControlUpdate OnTargetRateConstraints( |
| TargetRateConstraints msg) override; |
| NetworkControlUpdate OnTransportLossReport(TransportLossReport msg) override; |
| NetworkControlUpdate OnTransportPacketsFeedback( |
| TransportPacketsFeedback msg) override; |
| NetworkControlUpdate OnNetworkStateEstimate( |
| NetworkStateEstimate msg) override; |
| |
| NetworkControlUpdate GetNetworkState(Timestamp at_time) const; |
| |
| private: |
| friend class GoogCcStatePrinter; |
| std::vector<ProbeClusterConfig> ResetConstraints( |
| TargetRateConstraints new_constraints); |
| void ClampConstraints(); |
| void MaybeTriggerOnNetworkChanged(NetworkControlUpdate* update, |
| Timestamp at_time); |
| void UpdateCongestionWindowSize(); |
| PacerConfig GetPacingRates(Timestamp at_time) const; |
| const FieldTrialBasedConfig trial_based_config_; |
| |
| const FieldTrialsView* const key_value_config_; |
| RtcEventLog* const event_log_; |
| const bool packet_feedback_only_; |
| FieldTrialFlag safe_reset_on_route_change_; |
| FieldTrialFlag safe_reset_acknowledged_rate_; |
| const bool use_min_allocatable_as_lower_bound_; |
| const bool ignore_probes_lower_than_network_estimate_; |
| const bool limit_probes_lower_than_throughput_estimate_; |
| const RateControlSettings rate_control_settings_; |
| const bool loss_based_stable_rate_; |
| const bool pace_at_max_of_bwe_and_lower_link_capacity_; |
| const bool pace_at_loss_based_bwe_when_loss_; |
| |
| const std::unique_ptr<ProbeController> probe_controller_; |
| const std::unique_ptr<CongestionWindowPushbackController> |
| congestion_window_pushback_controller_; |
| |
| std::unique_ptr<SendSideBandwidthEstimation> bandwidth_estimation_; |
| std::unique_ptr<AlrDetector> alr_detector_; |
| std::unique_ptr<ProbeBitrateEstimator> probe_bitrate_estimator_; |
| std::unique_ptr<NetworkStateEstimator> network_estimator_; |
| std::unique_ptr<NetworkStatePredictor> network_state_predictor_; |
| std::unique_ptr<DelayBasedBwe> delay_based_bwe_; |
| std::unique_ptr<AcknowledgedBitrateEstimatorInterface> |
| acknowledged_bitrate_estimator_; |
| |
| absl::optional<NetworkControllerConfig> initial_config_; |
| |
| DataRate min_target_rate_ = DataRate::Zero(); |
| DataRate min_data_rate_ = DataRate::Zero(); |
| DataRate max_data_rate_ = DataRate::PlusInfinity(); |
| absl::optional<DataRate> starting_rate_; |
| |
| bool first_packet_sent_ = false; |
| |
| absl::optional<NetworkStateEstimate> estimate_; |
| |
| Timestamp next_loss_update_ = Timestamp::MinusInfinity(); |
| int lost_packets_since_last_loss_update_ = 0; |
| int expected_packets_since_last_loss_update_ = 0; |
| |
| std::deque<int64_t> feedback_max_rtts_; |
| |
| DataRate last_loss_based_target_rate_; |
| DataRate last_pushback_target_rate_; |
| DataRate last_stable_target_rate_; |
| |
| absl::optional<uint8_t> last_estimated_fraction_loss_ = 0; |
| TimeDelta last_estimated_round_trip_time_ = TimeDelta::PlusInfinity(); |
| Timestamp last_packet_received_time_ = Timestamp::MinusInfinity(); |
| |
| double pacing_factor_; |
| DataRate min_total_allocated_bitrate_; |
| DataRate max_padding_rate_; |
| DataRate max_total_allocated_bitrate_; |
| |
| bool previously_in_alr_ = false; |
| |
| absl::optional<DataSize> current_data_window_; |
| }; |
| |
| } // namespace webrtc |
| |
| #endif // MODULES_CONGESTION_CONTROLLER_GOOG_CC_GOOG_CC_NETWORK_CONTROL_H_ |