57daeb7ac7
This is a reland of 0cbcba7ea0dced1a7f353c64d6cf91d46ccb29f9. Original change's description: > Moved congestion controller to task queue. > > The goal of this work is to make it easier to experiment with the > bandwidth estimation implementation. For this reason network control > functionality is moved from SendSideCongestionController(SSCC), > PacedSender and BitrateController to the newly created > GoogCcNetworkController which implements the newly created > NetworkControllerInterface. This allows the implementation to be > replaced at runtime in the future. > > This is the first part of a split of a larger CL, see: > https://webrtc-review.googlesource.com/c/src/+/39788/8 > For further explanations. > > Bug: webrtc:8415 > Change-Id: I770189c04cc31b313bd4e57821acff55fbcb1ad3 > Reviewed-on: https://webrtc-review.googlesource.com/43840 > Commit-Queue: Sebastian Jansson <srte@webrtc.org> > Reviewed-by: Björn Terelius <terelius@webrtc.org> > Reviewed-by: Stefan Holmer <stefan@webrtc.org> > Cr-Commit-Position: refs/heads/master@{#21868} Bug: webrtc:8415 Change-Id: I1d1756a30deed5b421b1c91c1918a13b6bb455da Reviewed-on: https://webrtc-review.googlesource.com/48000 Reviewed-by: Stefan Holmer <stefan@webrtc.org> Commit-Queue: Sebastian Jansson <srte@webrtc.org> Cr-Commit-Position: refs/heads/master@{#21899}
98 lines
3.0 KiB
C++
98 lines
3.0 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_PROBE_CONTROLLER_H_
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#define MODULES_CONGESTION_CONTROLLER_PROBE_CONTROLLER_H_
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#include <stdint.h>
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#include <initializer_list>
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#include "api/optional.h"
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#include "modules/congestion_controller/network_control/include/network_control.h"
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namespace webrtc {
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class Clock;
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// This class controls initiation of probing to estimate initial channel
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// capacity. There is also support for probing during a session when max
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// bitrate is adjusted by an application.
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class ProbeController {
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public:
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explicit ProbeController(NetworkControllerObserver* observer);
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~ProbeController();
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void SetBitrates(int64_t min_bitrate_bps,
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int64_t start_bitrate_bps,
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int64_t max_bitrate_bps,
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int64_t at_time_ms);
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void OnNetworkAvailability(NetworkAvailability msg);
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void SetEstimatedBitrate(int64_t bitrate_bps, int64_t at_time_ms);
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void EnablePeriodicAlrProbing(bool enable);
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void SetAlrStartTimeMs(rtc::Optional<int64_t> alr_start_time);
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void SetAlrEndedTimeMs(int64_t alr_end_time);
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void RequestProbe(int64_t at_time_ms);
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// Resets the ProbeController to a state equivalent to as if it was just
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// created EXCEPT for |enable_periodic_alr_probing_|.
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void Reset(int64_t at_time_ms);
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void Process(int64_t at_time_ms);
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private:
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enum class State {
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// Initial state where no probing has been triggered yet.
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kInit,
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// Waiting for probing results to continue further probing.
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kWaitingForProbingResult,
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// Probing is complete.
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kProbingComplete,
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};
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void InitiateExponentialProbing(int64_t at_time_ms);
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void InitiateProbing(int64_t now_ms,
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std::initializer_list<int64_t> bitrates_to_probe,
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bool probe_further);
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NetworkControllerObserver* const observer_;
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bool network_available_;
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State state_;
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int64_t min_bitrate_to_probe_further_bps_;
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int64_t time_last_probing_initiated_ms_;
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int64_t estimated_bitrate_bps_;
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int64_t start_bitrate_bps_;
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int64_t max_bitrate_bps_;
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int64_t last_bwe_drop_probing_time_ms_;
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rtc::Optional<int64_t> alr_start_time_ms_;
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rtc::Optional<int64_t> alr_end_time_ms_;
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bool enable_periodic_alr_probing_;
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int64_t time_of_last_large_drop_ms_;
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int64_t bitrate_before_last_large_drop_bps_;
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bool in_rapid_recovery_experiment_;
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// For WebRTC.BWE.MidCallProbing.* metric.
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bool mid_call_probing_waiting_for_result_;
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int64_t mid_call_probing_bitrate_bps_;
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int64_t mid_call_probing_succcess_threshold_;
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RTC_DISALLOW_IMPLICIT_CONSTRUCTORS(ProbeController);
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};
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} // namespace webrtc
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#endif // MODULES_CONGESTION_CONTROLLER_PROBE_CONTROLLER_H_
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