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/*
* Copyright (c) 2015 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "webrtc/modules/remote_bitrate_estimator/test/packet_receiver.h"
#include <vector>
#include "testing/gtest/include/gtest/gtest.h"
#include "webrtc/base/common.h"
#include "webrtc/modules/interface/module_common_types.h"
#include "webrtc/modules/remote_bitrate_estimator/test/bwe.h"
#include "webrtc/modules/remote_bitrate_estimator/test/bwe_test_framework.h"
#include "webrtc/modules/rtp_rtcp/interface/receive_statistics.h"
#include "webrtc/system_wrappers/include/clock.h"
namespace webrtc {
namespace testing {
namespace bwe {
PacketReceiver::PacketReceiver(PacketProcessorListener* listener,
int flow_id,
BandwidthEstimatorType bwe_type,
bool plot_delay,
bool plot_bwe,
MetricRecorder* metric_recorder)
: PacketProcessor(listener, flow_id, kReceiver),
bwe_receiver_(CreateBweReceiver(bwe_type, flow_id, plot_bwe)),
metric_recorder_(metric_recorder),
plot_delay_(plot_delay),
last_delay_plot_ms_(0),
// #2 aligns the plot with the right axis.
delay_prefix_("Delay_ms#2"),
bwe_type_(bwe_type) {
if (metric_recorder_ != nullptr) {
// Setup the prefix std::strings used when logging.
std::vector<std::string> prefixes;
// Metric recorder plots them in separated figures,
// alignment will take place with the #1 left axis.
prefixes.push_back("Throughput_kbps#1");
prefixes.push_back("Sending_Estimate_kbps#1");
prefixes.push_back("Delay_ms_#1");
prefixes.push_back("Packet_Loss_#1");
prefixes.push_back("Objective_function_#1");
// Plot Total/PerFlow Available capacity together with throughputs.
prefixes.push_back("Throughput_kbps#1"); // Total Available.
prefixes.push_back("Throughput_kbps#1"); // Available per flow.
bool plot_loss = plot_delay; // Plot loss if delay is plotted.
metric_recorder_->SetPlotInformation(prefixes, plot_delay, plot_loss);
}
}
PacketReceiver::PacketReceiver(PacketProcessorListener* listener,
int flow_id,
BandwidthEstimatorType bwe_type,
bool plot_delay,
bool plot_bwe)
: PacketReceiver(listener,
flow_id,
bwe_type,
plot_delay,
plot_bwe,
nullptr) {
}
PacketReceiver::~PacketReceiver() {
}
void PacketReceiver::RunFor(int64_t time_ms, Packets* in_out) {
Packets feedback;
for (auto it = in_out->begin(); it != in_out->end();) {
// PacketReceivers are only associated with a single stream, and therefore
// should only process a single flow id.
// TODO(holmer): Break this out into a Demuxer which implements both
// PacketProcessorListener and PacketProcessor.
BWE_TEST_LOGGING_CONTEXT("Receiver");
if ((*it)->GetPacketType() == Packet::kMedia &&
(*it)->flow_id() == *flow_ids().begin()) {
BWE_TEST_LOGGING_CONTEXT(*flow_ids().begin());
const MediaPacket* media_packet = static_cast<const MediaPacket*>(*it);
// We're treating the send time (from previous filter) as the arrival
// time once packet reaches the estimator.
int64_t arrival_time_ms = media_packet->send_time_ms();
int64_t send_time_ms = media_packet->creation_time_ms();
delay_stats_.Push(arrival_time_ms - send_time_ms);
if (metric_recorder_ != nullptr) {
metric_recorder_->UpdateTimeMs(arrival_time_ms);
UpdateMetrics(arrival_time_ms, send_time_ms,
media_packet->payload_size());
metric_recorder_->PlotAllDynamics();
} else if (plot_delay_) {
PlotDelay(arrival_time_ms, send_time_ms);
}
bwe_receiver_->ReceivePacket(arrival_time_ms, *media_packet);
FeedbackPacket* fb = bwe_receiver_->GetFeedback(arrival_time_ms);
if (fb)
feedback.push_back(fb);
delete media_packet;
it = in_out->erase(it);
} else {
++it;
}
}
// Insert feedback packets to be sent back to the sender.
in_out->merge(feedback, DereferencingComparator<Packet>);
}
void PacketReceiver::UpdateMetrics(int64_t arrival_time_ms,
int64_t send_time_ms,
size_t payload_size) {
metric_recorder_->UpdateThroughput(bwe_receiver_->RecentKbps(), payload_size);
metric_recorder_->UpdateDelayMs(arrival_time_ms - send_time_ms);
metric_recorder_->UpdateLoss(bwe_receiver_->RecentPacketLossRatio());
metric_recorder_->UpdateObjective();
}
void PacketReceiver::PlotDelay(int64_t arrival_time_ms, int64_t send_time_ms) {
const int64_t kDelayPlotIntervalMs = 100;
if (arrival_time_ms >= last_delay_plot_ms_ + kDelayPlotIntervalMs) {
BWE_TEST_LOGGING_PLOT_WITH_NAME(0, delay_prefix_, arrival_time_ms,
arrival_time_ms - send_time_ms,
bwe_names[bwe_type_]);
last_delay_plot_ms_ = arrival_time_ms;
}
}
float PacketReceiver::GlobalPacketLoss() {
return bwe_receiver_->GlobalReceiverPacketLossRatio();
}
Stats<double> PacketReceiver::GetDelayStats() const {
return delay_stats_;
}
} // namespace bwe
} // namespace testing
} // namespace webrtc
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