1 files changed, 147 insertions, 0 deletions
diff --git a/third_party/libwebrtc/modules/congestion_controller/goog_cc/goog_cc_network_control.h b/third_party/libwebrtc/modules/congestion_controller/goog_cc/goog_cc_network_control.h
new file mode 100644
index 0000000000..37a064e37c
--- /dev/null
+++ b/third_party/libwebrtc/modules/congestion_controller/goog_cc/goog_cc_network_control.h
@@ -0,0 +1,147 @@
+/*
+ *  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 pace_at_max_of_bwe_and_lower_link_capacity_;
+
+  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_;
+
+  bool previously_in_alr_ = false;
+
+  absl::optional<DataSize> current_data_window_;
+};
+
+}  // namespace webrtc
+
+#endif  // MODULES_CONGESTION_CONTROLLER_GOOG_CC_GOOG_CC_NETWORK_CONTROL_H_