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88290ae358
This is a reland of fa79081dca
It crashed due to inability to handle small timestamps in probe
estimator. This was fixed by moving history window check to avoid
subtracting from the timestamp.
Original change's description:
> Cleanup of RTP references in GoogCC implementation.
>
> As the send time congestion controller now has been removed,
> we don't need the RTP related constructs anymore.
>
> Bug: webrtc:9510
> Change-Id: I02c059ed8ae907ab4672d183c5639ad459b581aa
> Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/142221
> Commit-Queue: Sebastian Jansson <srte@webrtc.org>
> Reviewed-by: Björn Terelius <terelius@webrtc.org>
> Cr-Commit-Position: refs/heads/master@{#28330}
Bug: webrtc:9510
Change-Id: I3bf91222068e4fbb6aa159bfeb7a73e00bb6a0d7
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/143165
Reviewed-by: Björn Terelius <terelius@webrtc.org>
Commit-Queue: Sebastian Jansson <srte@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#28347}
103 lines
3.6 KiB
C++
103 lines
3.6 KiB
C++
/*
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* Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef MODULES_CONGESTION_CONTROLLER_GOOG_CC_DELAY_BASED_BWE_H_
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#define MODULES_CONGESTION_CONTROLLER_GOOG_CC_DELAY_BASED_BWE_H_
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#include <stddef.h>
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#include <stdint.h>
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#include <memory>
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#include <vector>
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#include "absl/types/optional.h"
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#include "api/network_state_predictor.h"
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#include "api/transport/network_types.h"
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#include "api/transport/webrtc_key_value_config.h"
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#include "modules/congestion_controller/goog_cc/delay_increase_detector_interface.h"
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#include "modules/congestion_controller/goog_cc/probe_bitrate_estimator.h"
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#include "modules/remote_bitrate_estimator/aimd_rate_control.h"
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#include "modules/remote_bitrate_estimator/include/bwe_defines.h"
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#include "modules/remote_bitrate_estimator/inter_arrival.h"
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#include "rtc_base/constructor_magic.h"
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#include "rtc_base/race_checker.h"
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namespace webrtc {
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class RtcEventLog;
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class DelayBasedBwe {
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public:
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struct Result {
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Result();
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Result(bool probe, DataRate target_bitrate);
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~Result();
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bool updated;
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bool probe;
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DataRate target_bitrate = DataRate::Zero();
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bool recovered_from_overuse;
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bool backoff_in_alr;
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};
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explicit DelayBasedBwe(const WebRtcKeyValueConfig* key_value_config,
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RtcEventLog* event_log,
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NetworkStatePredictor* network_state_predictor);
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virtual ~DelayBasedBwe();
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Result IncomingPacketFeedbackVector(
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const TransportPacketsFeedback& msg,
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absl::optional<DataRate> acked_bitrate,
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absl::optional<DataRate> probe_bitrate,
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absl::optional<NetworkStateEstimate> network_estimate,
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bool in_alr);
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void OnRttUpdate(TimeDelta avg_rtt);
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bool LatestEstimate(std::vector<uint32_t>* ssrcs, DataRate* bitrate) const;
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void SetStartBitrate(DataRate start_bitrate);
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void SetMinBitrate(DataRate min_bitrate);
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TimeDelta GetExpectedBwePeriod() const;
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void SetAlrLimitedBackoffExperiment(bool enabled);
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DataRate TriggerOveruse(Timestamp at_time,
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absl::optional<DataRate> link_capacity);
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private:
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friend class GoogCcStatePrinter;
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void IncomingPacketFeedback(const PacketResult& packet_feedback,
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Timestamp at_time);
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Result MaybeUpdateEstimate(
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absl::optional<DataRate> acked_bitrate,
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absl::optional<DataRate> probe_bitrate,
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absl::optional<NetworkStateEstimate> state_estimate,
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bool recovered_from_overuse,
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bool in_alr,
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Timestamp at_time);
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// Updates the current remote rate estimate and returns true if a valid
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// estimate exists.
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bool UpdateEstimate(Timestamp now,
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absl::optional<DataRate> acked_bitrate,
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DataRate* target_bitrate);
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rtc::RaceChecker network_race_;
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RtcEventLog* const event_log_;
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const WebRtcKeyValueConfig* const key_value_config_;
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NetworkStatePredictor* network_state_predictor_;
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std::unique_ptr<InterArrival> inter_arrival_;
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std::unique_ptr<DelayIncreaseDetectorInterface> delay_detector_;
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Timestamp last_seen_packet_;
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bool uma_recorded_;
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AimdRateControl rate_control_;
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DataRate prev_bitrate_;
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BandwidthUsage prev_state_;
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bool alr_limited_backoff_enabled_;
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RTC_DISALLOW_IMPLICIT_CONSTRUCTORS(DelayBasedBwe);
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};
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} // namespace webrtc
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#endif // MODULES_CONGESTION_CONTROLLER_GOOG_CC_DELAY_BASED_BWE_H_
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