More Simulation Framework features

webrtc/modules/remote_bitrate_estimator/test/packet_receiver.cc

 /*
  *  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 <math.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/interface/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) {
+  if (metric_recorder_ != nullptr) {
+    // Setup the prefix ststd::rings used when logging.
+    std::vector<std::string> prefixes;
+
+    std::stringstream ss1;
+    ss1 << "Throughput_kbps_" << flow_id << "#2";
+    prefixes.push_back(ss1.str());  // Throughput.
+
+    std::stringstream ss2;
+    ss2 << "Delay_ms_" << flow_id << "#2";
+    prefixes.push_back(ss2.str());  // Delay.
+
+    std::stringstream ss3;
+    ss3 << "Packet_Loss_" << flow_id << "#2";
+    prefixes.push_back(ss3.str());  // Loss.
+
+    std::stringstream ss4;
+    ss4 << "Objective_function_" << flow_id << "#2";
+    prefixes.push_back(ss4.str());  // Objective.
+
+    // Plot Total/PerFlow Available capacity together with throughputs.
+    std::stringstream ss5;
+    ss5 << "Throughput_kbps" << flow_id << "#1";
+    prefixes.push_back(ss5.str());  // Total Available.
+    prefixes.push_back(ss5.str());  // Available per flow.
+
+    metric_recorder_->SetPlotInformation(prefixes);
+  }
+}
+
+PacketReceiver::PacketReceiver(PacketProcessorListener* listener,
+                               int flow_id,
+                               BandwidthEstimatorType bwe_type,
+                               bool plot_delay,
                                bool plot_bwe)
-    : PacketProcessor(listener, flow_id, kReceiver),
-      delay_log_prefix_(),
-      metric_log_prefix_(),
-      packet_loss_log_prefix_(),
-      last_delay_plot_ms_(0),
-      last_metric_plot_ms_(0),
-      last_packet_loss_plot_ms_(0),
-      plot_delay_(plot_delay),
-      // TODO(magalhaesc) Add separated plot_objective_function and
-      // plot_packet_loss parameters to the constructor.
-      plot_objective_function_(plot_delay),
-      plot_packet_loss_(plot_delay),
-      bwe_receiver_(CreateBweReceiver(bwe_type, flow_id, plot_bwe)),
-      total_delay_ms_(0),
-      total_throughput_(0),
-      number_packets_(0) {
-  // Setup the prefix ststd::rings used when logging.
-  std::stringstream ss1;
-  ss1 << "Delay_" << flow_id << "#2";
-  delay_log_prefix_ = ss1.str();
-
-  std::stringstream ss2;
-  ss2 << "Objective_function_" << flow_id << "#2";
-  metric_log_prefix_ = ss2.str();
-
-  std::stringstream ss3;
-  ss3 << "Packet_Loss_" << flow_id << "#2";
-  packet_loss_log_prefix_ = ss3.str();
+    : 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_us() + 500) / 1000;
-      int64_t send_time_ms = (media_packet->creation_time_us() + 500) / 1000;
+      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);
-      PlotDelay(arrival_time_ms, send_time_ms);
-      PlotObjectiveFunction(arrival_time_ms);
-      PlotPacketLoss(arrival_time_ms);
 
-      total_delay_ms_ += arrival_time_ms - send_time_ms;
-      total_throughput_ += media_packet->payload_size();
-      ++number_packets_;
+      if (metric_recorder_ != nullptr) {
+        metric_recorder_->UpdateTime(arrival_time_ms);
+        UpdateMetrics(arrival_time_ms, send_time_ms,
+                      media_packet->payload_size());
+        metric_recorder_->PlotAllDynamics();
+      }
 
       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::PlotDelay(int64_t arrival_time_ms, int64_t send_time_ms) {
-  static const int kDelayPlotIntervalMs = 100;
-  if (!plot_delay_)
-    return;
-  if (arrival_time_ms - last_delay_plot_ms_ > kDelayPlotIntervalMs) {
-    BWE_TEST_LOGGING_PLOT(0, delay_log_prefix_, arrival_time_ms,
-                          arrival_time_ms - send_time_ms);
-    last_delay_plot_ms_ = arrival_time_ms;
-  }
+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_->UpdateDelay(arrival_time_ms - send_time_ms);
+  metric_recorder_->UpdateLoss(bwe_receiver_->RecentPacketLossRatio());
+  metric_recorder_->UpdateObjective();
 }
 
-double PacketReceiver::ObjectiveFunction() {
-  const double kDelta = 1.0;  // Delay penalty factor.
-  double throughput_metric = log(static_cast<double>(total_throughput_));
-  double delay_penalty = kDelta * log(static_cast<double>(total_delay_ms_));
-  return throughput_metric - delay_penalty;
-}
-
-void PacketReceiver::PlotObjectiveFunction(int64_t arrival_time_ms) {
-  static const int kMetricPlotIntervalMs = 1000;
-  if (!plot_objective_function_) {
-    return;
-  }
-  if (arrival_time_ms - last_metric_plot_ms_ > kMetricPlotIntervalMs) {
-    BWE_TEST_LOGGING_PLOT(1, metric_log_prefix_, arrival_time_ms,
-                          ObjectiveFunction());
-    last_metric_plot_ms_ = arrival_time_ms;
-  }
-}
-
-void PacketReceiver::PlotPacketLoss(int64_t arrival_time_ms) {
-  static const int kPacketLossPlotIntervalMs = 500;
-  if (!plot_packet_loss_) {
-    return;
-  }
-  if (arrival_time_ms - last_packet_loss_plot_ms_ > kPacketLossPlotIntervalMs) {
-    BWE_TEST_LOGGING_PLOT(2, packet_loss_log_prefix_, arrival_time_ms,
-                          bwe_receiver_->RecentPacketLossRatio());
-    last_packet_loss_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