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982639c019
Fix has 2 parts: 1. Fix for the LossBasedControl being at much lower levels than DelayBased in StartUpPhase. 2. Explicitly fix state machine problem leading to toggling between the two estimates. Bug: webrtc:10222 Change-Id: Ieaaaec6c9233da61a86b69d936c4979c79645686 Reviewed-on: https://webrtc-review.googlesource.com/c/118280 Commit-Queue: Christoffer Rodbro <crodbro@webrtc.org> Reviewed-by: Sebastian Jansson <srte@webrtc.org> Cr-Commit-Position: refs/heads/master@{#26327}
79 lines
2.9 KiB
C++
79 lines
2.9 KiB
C++
/*
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* Copyright (c) 2018 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_BITRATE_CONTROLLER_LOSS_BASED_BANDWIDTH_ESTIMATION_H_
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#define MODULES_BITRATE_CONTROLLER_LOSS_BASED_BANDWIDTH_ESTIMATION_H_
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#include <vector>
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#include "api/units/data_rate.h"
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#include "api/units/time_delta.h"
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#include "api/units/timestamp.h"
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#include "modules/rtp_rtcp/include/rtp_rtcp_defines.h"
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#include "rtc_base/experiments/field_trial_parser.h"
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namespace webrtc {
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struct LossBasedControlConfig {
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LossBasedControlConfig();
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LossBasedControlConfig(const LossBasedControlConfig&);
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LossBasedControlConfig& operator=(const LossBasedControlConfig&) = default;
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~LossBasedControlConfig();
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bool enabled;
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FieldTrialParameter<double> min_increase_factor;
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FieldTrialParameter<double> max_increase_factor;
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FieldTrialParameter<TimeDelta> increase_low_rtt;
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FieldTrialParameter<TimeDelta> increase_high_rtt;
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FieldTrialParameter<double> decrease_factor;
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FieldTrialParameter<TimeDelta> loss_window;
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FieldTrialParameter<TimeDelta> loss_max_window;
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FieldTrialParameter<TimeDelta> acknowledged_rate_max_window;
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FieldTrialParameter<DataRate> increase_offset;
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FieldTrialParameter<DataRate> loss_bandwidth_balance_increase;
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FieldTrialParameter<DataRate> loss_bandwidth_balance_decrease;
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FieldTrialParameter<double> loss_bandwidth_balance_exponent;
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FieldTrialParameter<bool> allow_resets;
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FieldTrialParameter<TimeDelta> decrease_interval;
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FieldTrialParameter<TimeDelta> loss_report_timeout;
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};
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class LossBasedBandwidthEstimation {
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public:
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LossBasedBandwidthEstimation();
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void Update(Timestamp at_time,
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DataRate min_bitrate,
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TimeDelta last_round_trip_time);
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void UpdateAcknowledgedBitrate(DataRate acknowledged_bitrate,
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Timestamp at_time);
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void MaybeReset(DataRate bitrate);
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void SetInitialBitrate(DataRate bitrate);
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bool Enabled() const { return config_.enabled; }
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void UpdateLossStatistics(const std::vector<PacketResult>& packet_results,
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Timestamp at_time);
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DataRate GetEstimate() const { return loss_based_bitrate_; }
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private:
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void Reset(DataRate bitrate);
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LossBasedControlConfig config_;
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double average_loss_;
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double average_loss_max_;
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DataRate loss_based_bitrate_;
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DataRate acknowledged_bitrate_max_;
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Timestamp acknowledged_bitrate_last_update_;
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Timestamp time_last_decrease_;
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bool has_decreased_since_last_loss_report_;
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Timestamp last_loss_packet_report_;
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double last_loss_ratio_;
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};
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} // namespace webrtc
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#endif // MODULES_BITRATE_CONTROLLER_LOSS_BASED_BANDWIDTH_ESTIMATION_H_
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