0cbcba7ea0
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}
97 lines
3.1 KiB
C++
97 lines
3.1 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 <initializer_list>
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#include "common_types.h" // NOLINT(build/include)
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#include "modules/congestion_controller/network_control/include/network_control.h"
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#include "modules/rtp_rtcp/include/rtp_rtcp_defines.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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