cf2856b01c
BurstyPacer is currently controlled via field trials. In order for Chrome to be able to have burst without relying on a field trial, this parameter is added. When all burst experiments have concluded we may be able to have a hardcoded constant instead, but for now the parameter is added to RTCConfiguration. NOTRY=True Bug: chromium:1354491 Change-Id: I386c1651dbbcbf309c15ea3d3380cf8f632b5429 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/283420 Reviewed-by: Erik Språng <sprang@webrtc.org> Commit-Queue: Henrik Boström <hbos@webrtc.org> Cr-Commit-Position: refs/heads/main@{#38621}
223 lines
8.8 KiB
C++
223 lines
8.8 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 CALL_RTP_TRANSPORT_CONTROLLER_SEND_H_
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#define CALL_RTP_TRANSPORT_CONTROLLER_SEND_H_
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#include <atomic>
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#include <map>
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#include <memory>
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#include <string>
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#include <vector>
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#include "absl/strings/string_view.h"
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#include "api/network_state_predictor.h"
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#include "api/sequence_checker.h"
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#include "api/task_queue/task_queue_base.h"
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#include "api/task_queue/task_queue_factory.h"
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#include "api/transport/network_control.h"
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#include "api/units/data_rate.h"
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#include "call/rtp_bitrate_configurator.h"
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#include "call/rtp_transport_controller_send_interface.h"
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#include "call/rtp_video_sender.h"
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#include "modules/congestion_controller/rtp/control_handler.h"
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#include "modules/congestion_controller/rtp/transport_feedback_adapter.h"
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#include "modules/congestion_controller/rtp/transport_feedback_demuxer.h"
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#include "modules/pacing/packet_router.h"
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#include "modules/pacing/rtp_packet_pacer.h"
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#include "modules/pacing/task_queue_paced_sender.h"
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#include "modules/utility/maybe_worker_thread.h"
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#include "rtc_base/network_route.h"
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#include "rtc_base/race_checker.h"
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#include "rtc_base/task_queue.h"
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#include "rtc_base/task_utils/repeating_task.h"
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namespace webrtc {
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class Clock;
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class FrameEncryptorInterface;
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class RtcEventLog;
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class RtpTransportControllerSend final
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: public RtpTransportControllerSendInterface,
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public RtcpBandwidthObserver,
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public TransportFeedbackObserver,
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public NetworkStateEstimateObserver {
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public:
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RtpTransportControllerSend(
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Clock* clock,
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RtcEventLog* event_log,
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NetworkStatePredictorFactoryInterface* predictor_factory,
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NetworkControllerFactoryInterface* controller_factory,
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const BitrateConstraints& bitrate_config,
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TaskQueueFactory* task_queue_factory,
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const FieldTrialsView& trials,
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absl::optional<TimeDelta> pacer_burst_interval);
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~RtpTransportControllerSend() override;
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RtpTransportControllerSend(const RtpTransportControllerSend&) = delete;
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RtpTransportControllerSend& operator=(const RtpTransportControllerSend&) =
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delete;
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// TODO(tommi): Change to std::unique_ptr<>.
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RtpVideoSenderInterface* CreateRtpVideoSender(
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const std::map<uint32_t, RtpState>& suspended_ssrcs,
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const std::map<uint32_t, RtpPayloadState>&
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states, // move states into RtpTransportControllerSend
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const RtpConfig& rtp_config,
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int rtcp_report_interval_ms,
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Transport* send_transport,
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const RtpSenderObservers& observers,
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RtcEventLog* event_log,
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std::unique_ptr<FecController> fec_controller,
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const RtpSenderFrameEncryptionConfig& frame_encryption_config,
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rtc::scoped_refptr<FrameTransformerInterface> frame_transformer) override;
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void DestroyRtpVideoSender(
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RtpVideoSenderInterface* rtp_video_sender) override;
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// Implements RtpTransportControllerSendInterface
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MaybeWorkerThread* GetWorkerQueue() override;
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PacketRouter* packet_router() override;
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NetworkStateEstimateObserver* network_state_estimate_observer() override;
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TransportFeedbackObserver* transport_feedback_observer() override;
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RtpPacketSender* packet_sender() override;
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void SetAllocatedSendBitrateLimits(BitrateAllocationLimits limits) override;
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void SetPacingFactor(float pacing_factor) override;
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void SetQueueTimeLimit(int limit_ms) override;
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StreamFeedbackProvider* GetStreamFeedbackProvider() override;
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void RegisterTargetTransferRateObserver(
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TargetTransferRateObserver* observer) override;
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void OnNetworkRouteChanged(absl::string_view transport_name,
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const rtc::NetworkRoute& network_route) override;
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void OnNetworkAvailability(bool network_available) override;
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RtcpBandwidthObserver* GetBandwidthObserver() override;
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int64_t GetPacerQueuingDelayMs() const override;
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absl::optional<Timestamp> GetFirstPacketTime() const override;
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void EnablePeriodicAlrProbing(bool enable) override;
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void OnSentPacket(const rtc::SentPacket& sent_packet) override;
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void OnReceivedPacket(const ReceivedPacket& packet_msg) override;
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void SetSdpBitrateParameters(const BitrateConstraints& constraints) override;
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void SetClientBitratePreferences(const BitrateSettings& preferences) override;
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void OnTransportOverheadChanged(
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size_t transport_overhead_bytes_per_packet) override;
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void AccountForAudioPacketsInPacedSender(bool account_for_audio) override;
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void IncludeOverheadInPacedSender() override;
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void EnsureStarted() override;
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// Implements RtcpBandwidthObserver interface
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void OnReceivedEstimatedBitrate(uint32_t bitrate) override;
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void OnReceivedRtcpReceiverReport(const ReportBlockList& report_blocks,
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int64_t rtt,
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int64_t now_ms) override;
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// Implements TransportFeedbackObserver interface
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void OnAddPacket(const RtpPacketSendInfo& packet_info) override;
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void OnTransportFeedback(const rtcp::TransportFeedback& feedback) override;
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// Implements NetworkStateEstimateObserver interface
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void OnRemoteNetworkEstimate(NetworkStateEstimate estimate) override;
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private:
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struct PacerSettings {
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explicit PacerSettings(const FieldTrialsView& trials);
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FieldTrialParameter<TimeDelta> holdback_window;
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FieldTrialParameter<int> holdback_packets;
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};
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void MaybeCreateControllers() RTC_RUN_ON(task_queue_);
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void UpdateInitialConstraints(TargetRateConstraints new_contraints)
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RTC_RUN_ON(task_queue_);
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void StartProcessPeriodicTasks() RTC_RUN_ON(task_queue_);
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void UpdateControllerWithTimeInterval() RTC_RUN_ON(task_queue_);
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absl::optional<BitrateConstraints> ApplyOrLiftRelayCap(bool is_relayed);
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bool IsRelevantRouteChange(const rtc::NetworkRoute& old_route,
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const rtc::NetworkRoute& new_route) const;
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void UpdateBitrateConstraints(const BitrateConstraints& updated);
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void UpdateStreamsConfig() RTC_RUN_ON(task_queue_);
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void OnReceivedRtcpReceiverReportBlocks(const ReportBlockList& report_blocks,
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int64_t now_ms)
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RTC_RUN_ON(task_queue_);
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void PostUpdates(NetworkControlUpdate update) RTC_RUN_ON(task_queue_);
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void UpdateControlState() RTC_RUN_ON(task_queue_);
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void UpdateCongestedState() RTC_RUN_ON(task_queue_);
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Clock* const clock_;
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RtcEventLog* const event_log_;
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TaskQueueFactory* const task_queue_factory_;
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SequenceChecker main_thread_;
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PacketRouter packet_router_;
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std::vector<std::unique_ptr<RtpVideoSenderInterface>> video_rtp_senders_
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RTC_GUARDED_BY(&main_thread_);
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RtpBitrateConfigurator bitrate_configurator_;
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std::map<std::string, rtc::NetworkRoute> network_routes_;
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bool pacer_started_;
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const PacerSettings pacer_settings_;
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TaskQueuePacedSender pacer_;
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TargetTransferRateObserver* observer_ RTC_GUARDED_BY(task_queue_);
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TransportFeedbackDemuxer feedback_demuxer_;
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TransportFeedbackAdapter transport_feedback_adapter_
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RTC_GUARDED_BY(task_queue_);
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NetworkControllerFactoryInterface* const controller_factory_override_
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RTC_PT_GUARDED_BY(task_queue_);
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const std::unique_ptr<NetworkControllerFactoryInterface>
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controller_factory_fallback_ RTC_PT_GUARDED_BY(task_queue_);
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std::unique_ptr<CongestionControlHandler> control_handler_
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RTC_GUARDED_BY(task_queue_) RTC_PT_GUARDED_BY(task_queue_);
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std::unique_ptr<NetworkControllerInterface> controller_
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RTC_GUARDED_BY(task_queue_) RTC_PT_GUARDED_BY(task_queue_);
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TimeDelta process_interval_ RTC_GUARDED_BY(task_queue_);
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std::map<uint32_t, RTCPReportBlock> last_report_blocks_
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RTC_GUARDED_BY(task_queue_);
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Timestamp last_report_block_time_ RTC_GUARDED_BY(task_queue_);
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NetworkControllerConfig initial_config_ RTC_GUARDED_BY(task_queue_);
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StreamsConfig streams_config_ RTC_GUARDED_BY(task_queue_);
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const bool reset_feedback_on_route_change_;
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const bool send_side_bwe_with_overhead_;
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const bool add_pacing_to_cwin_;
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FieldTrialParameter<DataRate> relay_bandwidth_cap_;
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size_t transport_overhead_bytes_per_packet_ RTC_GUARDED_BY(task_queue_);
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bool network_available_ RTC_GUARDED_BY(task_queue_);
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RepeatingTaskHandle pacer_queue_update_task_ RTC_GUARDED_BY(task_queue_);
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RepeatingTaskHandle controller_task_ RTC_GUARDED_BY(task_queue_);
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DataSize congestion_window_size_ RTC_GUARDED_BY(task_queue_);
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bool is_congested_ RTC_GUARDED_BY(task_queue_);
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// Protected by internal locks.
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RateLimiter retransmission_rate_limiter_;
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ScopedTaskSafety safety_;
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MaybeWorkerThread task_queue_;
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const FieldTrialsView& field_trials_;
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};
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} // namespace webrtc
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#endif // CALL_RTP_TRANSPORT_CONTROLLER_SEND_H_
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