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Send side bwe receives the delay based state even if the delay based bwe does not change its estimate.

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Bug: webrtc:12707
Change-Id: If67dcc6d1cb70dc763ab65bdb8426de100bcc626
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/261312
Reviewed-by: Per Kjellander <perkj@webrtc.org>
Commit-Queue: Per Kjellander <perkj@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#37084}
This commit is contained in:
Diep Bui 2022-06-01 22:11:00 +00:00 committed by WebRTC LUCI CQ
parent f2c49491b3
commit c4ca83c2bd
4 changed files with 17 additions and 28 deletions
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8
modules/congestion_controller/goog_cc/goog_cc_network_control.cc
View file

@ -554,13 +554,13 @@ NetworkControlUpdate GoogCcNetworkController::OnTransportPacketsFeedback(
}
// Since SetSendBitrate now resets the delay-based estimate, we have to
// call UpdateDelayBasedEstimate after SetSendBitrate.
bandwidth_estimation_->UpdateDelayBasedEstimate(
report.feedback_time, result.target_bitrate,
result.delay_detector_state);
bandwidth_estimation_->UpdateDelayBasedEstimate(report.feedback_time,
result.target_bitrate);
// Update the estimate in the ProbeController, in case we want to probe.
MaybeTriggerOnNetworkChanged(&update, report.feedback_time);
}
bandwidth_estimation_->UpdateLossBasedEstimatorFromFeedbackVector(report);
bandwidth_estimation_->UpdateLossBasedEstimator(report,
result.delay_detector_state);
recovered_from_overuse = result.recovered_from_overuse;
backoff_in_alr = result.backoff_in_alr;

18
modules/congestion_controller/goog_cc/send_side_bandwidth_estimation.cc
View file

@ -230,8 +230,7 @@ SendSideBandwidthEstimation::SendSideBandwidthEstimation(
bitrate_threshold_(kDefaultBitrateThreshold),
loss_based_bandwidth_estimator_v1_(key_value_config),
loss_based_bandwidth_estimator_v2_(key_value_config),
disable_receiver_limit_caps_only_("Disabled"),
delay_detector_state_(BandwidthUsage::kBwNormal) {
disable_receiver_limit_caps_only_("Disabled") {
RTC_DCHECK(event_log);
if (BweLossExperimentIsEnabled()) {
uint32_t bitrate_threshold_kbps;
@ -273,7 +272,6 @@ void SendSideBandwidthEstimation::OnRouteChange() {
uma_update_state_ = kNoUpdate;
uma_rtt_state_ = kNoUpdate;
last_rtc_event_log_ = Timestamp::MinusInfinity();
delay_detector_state_ = BandwidthUsage::kBwNormal;
}
void SendSideBandwidthEstimation::SetBitrates(
@ -333,12 +331,9 @@ void SendSideBandwidthEstimation::UpdateReceiverEstimate(Timestamp at_time,
ApplyTargetLimits(at_time);
}
void SendSideBandwidthEstimation::UpdateDelayBasedEstimate(
Timestamp at_time,
DataRate bitrate,
BandwidthUsage delay_detector_state) {
void SendSideBandwidthEstimation::UpdateDelayBasedEstimate(Timestamp at_time,
DataRate bitrate) {
link_capacity_.UpdateDelayBasedEstimate(at_time, bitrate);
delay_detector_state_ = delay_detector_state;
// TODO(srte): Ensure caller passes PlusInfinity, not zero, to represent no
// limitation.
delay_based_limit_ = bitrate.IsZero() ? DataRate::PlusInfinity() : bitrate;
@ -362,15 +357,16 @@ void SendSideBandwidthEstimation::SetAcknowledgedRate(
}
}
void SendSideBandwidthEstimation::UpdateLossBasedEstimatorFromFeedbackVector(
const TransportPacketsFeedback& report) {
void SendSideBandwidthEstimation::UpdateLossBasedEstimator(
const TransportPacketsFeedback& report,
BandwidthUsage delay_detector_state) {
if (LossBasedBandwidthEstimatorV1Enabled()) {
loss_based_bandwidth_estimator_v1_.UpdateLossStatistics(
report.packet_feedbacks, report.feedback_time);
}
if (LossBasedBandwidthEstimatorV2Enabled()) {
loss_based_bandwidth_estimator_v2_.UpdateBandwidthEstimate(
report.packet_feedbacks, delay_based_limit_, delay_detector_state_);
report.packet_feedbacks, delay_based_limit_, delay_detector_state);
}
}

9
modules/congestion_controller/goog_cc/send_side_bandwidth_estimation.h
View file

@ -98,9 +98,7 @@ class SendSideBandwidthEstimation {
void UpdateReceiverEstimate(Timestamp at_time, DataRate bandwidth);
// Call when a new delay-based estimate is available.
void UpdateDelayBasedEstimate(Timestamp at_time,
DataRate bitrate,
BandwidthUsage delay_detector_state);
void UpdateDelayBasedEstimate(Timestamp at_time, DataRate bitrate);
// Call when we receive a RTCP message with a ReceiveBlock.
void UpdatePacketsLost(int64_t packets_lost,
@ -119,8 +117,8 @@ class SendSideBandwidthEstimation {
int GetMinBitrate() const;
void SetAcknowledgedRate(absl::optional<DataRate> acknowledged_rate,
Timestamp at_time);
void UpdateLossBasedEstimatorFromFeedbackVector(
const TransportPacketsFeedback& report);
void UpdateLossBasedEstimator(const TransportPacketsFeedback& report,
BandwidthUsage delay_detector_state);
private:
friend class GoogCcStatePrinter;
@ -203,7 +201,6 @@ class SendSideBandwidthEstimation {
LossBasedBandwidthEstimation loss_based_bandwidth_estimator_v1_;
LossBasedBweV2 loss_based_bandwidth_estimator_v2_;
FieldTrialFlag disable_receiver_limit_caps_only_;
BandwidthUsage delay_detector_state_;
};
} // namespace webrtc
#endif // MODULES_CONGESTION_CONTROLLER_GOOG_CC_SEND_SIDE_BANDWIDTH_ESTIMATION_H_

10
modules/congestion_controller/goog_cc/send_side_bandwidth_estimation_unittest.cc
View file

@ -10,7 +10,6 @@
#include "modules/congestion_controller/goog_cc/send_side_bandwidth_estimation.h"
#include "api/network_state_predictor.h"
#include "api/rtc_event_log/rtc_event.h"
#include "logging/rtc_event_log/events/rtc_event_bwe_update_loss_based.h"
#include "logging/rtc_event_log/mock/mock_rtc_event_log.h"
@ -55,8 +54,7 @@ void TestProbing(bool use_delay_based) {
// Initial REMB applies immediately.
if (use_delay_based) {
bwe.UpdateDelayBasedEstimate(Timestamp::Millis(now_ms),
DataRate::BitsPerSec(kRembBps),
BandwidthUsage::kBwNormal);
DataRate::BitsPerSec(kRembBps));
} else {
bwe.UpdateReceiverEstimate(Timestamp::Millis(now_ms),
DataRate::BitsPerSec(kRembBps));
@ -68,8 +66,7 @@ void TestProbing(bool use_delay_based) {
now_ms += 2001;
if (use_delay_based) {
bwe.UpdateDelayBasedEstimate(Timestamp::Millis(now_ms),
DataRate::BitsPerSec(kSecondRembBps),
BandwidthUsage::kBwNormal);
DataRate::BitsPerSec(kSecondRembBps));
} else {
bwe.UpdateReceiverEstimate(Timestamp::Millis(now_ms),
DataRate::BitsPerSec(kSecondRembBps));
@ -160,8 +157,7 @@ TEST(SendSideBweTest, SettingSendBitrateOverridesDelayBasedEstimate) {
Timestamp::Millis(now_ms));
bwe.UpdateDelayBasedEstimate(Timestamp::Millis(now_ms),
DataRate::BitsPerSec(kDelayBasedBitrateBps),
BandwidthUsage::kBwNormal);
DataRate::BitsPerSec(kDelayBasedBitrateBps));
bwe.UpdateEstimate(Timestamp::Millis(now_ms));
EXPECT_GE(bwe.target_rate().bps(), kInitialBitrateBps);
EXPECT_LE(bwe.target_rate().bps(), kDelayBasedBitrateBps);