Use multimap to handle packets logged at the same time in the event log analyzer.

webrtc/tools/event_log_visualizer/analyzer.cc

 /*
  *  Copyright (c) 2016 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.
  */
 
@@ skipping 995 matching lines @@
   plot->SetXAxis(0, call_duration_s_, "Time (s)", kLeftMargin, kRightMargin);
   plot->SetSuggestedYAxis(0, 1, "Bitrate (kbps)", kBottomMargin, kTopMargin);
   if (desired_direction == webrtc::PacketDirection::kIncomingPacket) {
     plot->SetTitle("Incoming bitrate per stream");
   } else if (desired_direction == webrtc::PacketDirection::kOutgoingPacket) {
     plot->SetTitle("Outgoing bitrate per stream");
   }
 }
 
 void EventLogAnalyzer::CreateBweSimulationGraph(Plot* plot) {
-  std::map<uint64_t, const LoggedRtpPacket*> outgoing_rtp;
-  std::map<uint64_t, const LoggedRtcpPacket*> incoming_rtcp;
+  std::multimap<uint64_t, const LoggedRtpPacket*> outgoing_rtp;
+  std::multimap<uint64_t, const LoggedRtcpPacket*> incoming_rtcp;
 
   for (const auto& kv : rtp_packets_) {
     if (kv.first.GetDirection() == PacketDirection::kOutgoingPacket) {
       for (const LoggedRtpPacket& rtp_packet : kv.second)
         outgoing_rtp.insert(std::make_pair(rtp_packet.timestamp, &rtp_packet));
     }
   }
 
   for (const auto& kv : rtcp_packets_) {
     if (kv.first.GetDirection() == PacketDirection::kIncomingPacket) {
@@ skipping 100 matching lines @@
   // Add the data set to the plot.
   plot->series_list_.push_back(std::move(time_series));
   plot->series_list_.push_back(std::move(acked_time_series));
 
   plot->SetXAxis(0, call_duration_s_, "Time (s)", kLeftMargin, kRightMargin);
   plot->SetSuggestedYAxis(0, 10, "Bitrate (kbps)", kBottomMargin, kTopMargin);
   plot->SetTitle("Simulated BWE behavior");
 }
 
 void EventLogAnalyzer::CreateNetworkDelayFeedbackGraph(Plot* plot) {
-  std::map<uint64_t, const LoggedRtpPacket*> outgoing_rtp;
-  std::map<uint64_t, const LoggedRtcpPacket*> incoming_rtcp;
+  std::multimap<uint64_t, const LoggedRtpPacket*> outgoing_rtp;
+  std::multimap<uint64_t, const LoggedRtcpPacket*> incoming_rtcp;
 
   for (const auto& kv : rtp_packets_) {
     if (kv.first.GetDirection() == PacketDirection::kOutgoingPacket) {
       for (const LoggedRtpPacket& rtp_packet : kv.second)
         outgoing_rtp.insert(std::make_pair(rtp_packet.timestamp, &rtp_packet));
     }
   }
 
   for (const auto& kv : rtcp_packets_) {
     if (kv.first.GetDirection() == PacketDirection::kIncomingPacket) {
@@ skipping 236 matching lines @@
         return rtc::Optional<float>();
       },
       audio_network_adaptation_events_, begin_time_, time_series);
   plot->SetXAxis(0, call_duration_s_, "Time (s)", kLeftMargin, kRightMargin);
   plot->SetSuggestedYAxis(0, 1, "Number of channels (1 (mono)/2 (stereo))",
                           kBottomMargin, kTopMargin);
   plot->SetTitle("Reported audio encoder number of channels");
 }
 }  // namespace plotting
 }  // namespace webrtc