aa01f27667
This prepares for making the Clock interface fully mutable. Calls to the time functions in Clock can have side effects in some circumstances. It's also questionable if it's a good idea to allow repeated calls to a const method return different values without any changed to the class instance. Bug: webrtc:9883 Change-Id: I96fb9230705f7c80a4c0702132fd9dc73899fc5e Reviewed-on: https://webrtc-review.googlesource.com/c/120347 Commit-Queue: Sebastian Jansson <srte@webrtc.org> Reviewed-by: Karl Wiberg <kwiberg@webrtc.org> Reviewed-by: Niels Moller <nisse@webrtc.org> Cr-Commit-Position: refs/heads/master@{#26467}
102 lines
3.6 KiB
C++
102 lines
3.6 KiB
C++
/*
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* Copyright (c) 2017 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_INCLUDE_RECEIVE_SIDE_CONGESTION_CONTROLLER_H_
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#define MODULES_CONGESTION_CONTROLLER_INCLUDE_RECEIVE_SIDE_CONGESTION_CONTROLLER_H_
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#include <memory>
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#include <vector>
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#include "modules/remote_bitrate_estimator/remote_estimator_proxy.h"
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#include "rtc_base/constructor_magic.h"
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#include "rtc_base/critical_section.h"
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namespace webrtc {
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class RemoteBitrateEstimator;
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class RemoteBitrateObserver;
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// This class represents the congestion control state for receive
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// streams. For send side bandwidth estimation, this is simply
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// relaying for each received RTP packet back to the sender. While for
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// receive side bandwidth estimation, we do the estimation locally and
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// send our results back to the sender.
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class ReceiveSideCongestionController : public CallStatsObserver,
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public Module {
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public:
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ReceiveSideCongestionController(Clock* clock, PacketRouter* packet_router);
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~ReceiveSideCongestionController() override {}
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virtual void OnReceivedPacket(int64_t arrival_time_ms,
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size_t payload_size,
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const RTPHeader& header);
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// TODO(nisse): Delete these methods, design a more specific interface.
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virtual RemoteBitrateEstimator* GetRemoteBitrateEstimator(bool send_side_bwe);
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virtual const RemoteBitrateEstimator* GetRemoteBitrateEstimator(
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bool send_side_bwe) const;
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// Implements CallStatsObserver.
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void OnRttUpdate(int64_t avg_rtt_ms, int64_t max_rtt_ms) override;
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// This is send bitrate, used to control the rate of feedback messages.
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void OnBitrateChanged(int bitrate_bps);
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// Implements Module.
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int64_t TimeUntilNextProcess() override;
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void Process() override;
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private:
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class WrappingBitrateEstimator : public RemoteBitrateEstimator {
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public:
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WrappingBitrateEstimator(RemoteBitrateObserver* observer, Clock* clock);
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~WrappingBitrateEstimator() override;
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void IncomingPacket(int64_t arrival_time_ms,
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size_t payload_size,
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const RTPHeader& header) override;
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void Process() override;
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int64_t TimeUntilNextProcess() override;
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void OnRttUpdate(int64_t avg_rtt_ms, int64_t max_rtt_ms) override;
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void RemoveStream(unsigned int ssrc) override;
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bool LatestEstimate(std::vector<unsigned int>* ssrcs,
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unsigned int* bitrate_bps) const override;
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void SetMinBitrate(int min_bitrate_bps) override;
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private:
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void PickEstimatorFromHeader(const RTPHeader& header)
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RTC_EXCLUSIVE_LOCKS_REQUIRED(crit_sect_);
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void PickEstimator() RTC_EXCLUSIVE_LOCKS_REQUIRED(crit_sect_);
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RemoteBitrateObserver* observer_;
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Clock* const clock_;
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rtc::CriticalSection crit_sect_;
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std::unique_ptr<RemoteBitrateEstimator> rbe_;
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bool using_absolute_send_time_;
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uint32_t packets_since_absolute_send_time_;
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int min_bitrate_bps_;
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RTC_DISALLOW_IMPLICIT_CONSTRUCTORS(WrappingBitrateEstimator);
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};
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WrappingBitrateEstimator remote_bitrate_estimator_;
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RemoteEstimatorProxy remote_estimator_proxy_;
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};
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} // namespace webrtc
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#endif // MODULES_CONGESTION_CONTROLLER_INCLUDE_RECEIVE_SIDE_CONGESTION_CONTROLLER_H_
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