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Adds stable bandwidth estimate to GoogCC.

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The intention is to provide a bandwidth estimate that only updates if
the actual available bandwidth is known to have changed. This will be
used in media streams to avoid changing the configuration (such as
frame size, audio frame length etc), just because the control target
rate changed.

Bug: webrtc:9718
Change-Id: I17ba5a2f9e5bd408a71f89c690d45541655a68e2
Reviewed-on: https://webrtc-review.googlesource.com/c/107726
Commit-Queue: Sebastian Jansson <srte@webrtc.org>
Reviewed-by: Björn Terelius <terelius@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#25772}
This commit is contained in:
Sebastian Jansson
2018-11-23 14:49:18 +01:00
committed by Commit Bot
parent 88ce4ef46e
commit 57f3ad0f8d
7 changed files with 177 additions and 26 deletions
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5
test/scenario/simulated_time.cc
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@ -308,6 +308,7 @@ void SimulatedTimeClient::Update(NetworkControlUpdate update) {
DataRate rate_per_stream =
update.target_rate->target_rate * ratio_per_stream;
target_rate_ = update.target_rate->target_rate;
link_capacity_ = update.target_rate->network_estimate.bandwidth;
for (auto& stream : packet_streams_)
stream->OnTargetRateUpdate(rate_per_stream);
}
@ -349,6 +350,10 @@ TimeDelta SimulatedTimeClient::GetNetworkControllerProcessInterval() const {
return network_controller_factory_.GetProcessInterval();
}
DataRate SimulatedTimeClient::link_capacity() const {
return link_capacity_;
}
double SimulatedTimeClient::target_rate_kbps() const {
return target_rate_.kbps<double>();
}

2
test/scenario/simulated_time.h
View File

@ -132,6 +132,7 @@ class SimulatedTimeClient : NetworkReceiverInterface {
void TriggerFakeReroute(Timestamp at_time);
TimeDelta GetNetworkControllerProcessInterval() const;
double target_rate_kbps() const;
DataRate link_capacity() const;
bool TryDeliverPacket(rtc::CopyOnWriteBuffer packet,
uint64_t receiver,
@ -147,6 +148,7 @@ class SimulatedTimeClient : NetworkReceiverInterface {
SimulatedFeedback feedback_;
TargetRateConstraints current_contraints_;
DataRate target_rate_ = DataRate::Infinity();
DataRate link_capacity_ = DataRate::Infinity();
FILE* packet_log_ = nullptr;
std::vector<std::unique_ptr<PacketStream>> packet_streams_;