Relanding of "Adding debug dump to audio network adaptor."

webrtc/modules/audio_coding/audio_network_adaptor/audio_network_adaptor_impl.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.
  */
 
+#include "webrtc/modules/audio_coding/audio_network_adaptor/audio_network_adaptor_impl.h"
+
 #include <utility>
 
-#include "webrtc/modules/audio_coding/audio_network_adaptor/audio_network_adaptor_impl.h"
-
 namespace webrtc {
 
 AudioNetworkAdaptorImpl::Config::Config() = default;
 
 AudioNetworkAdaptorImpl::Config::~Config() = default;
 
 AudioNetworkAdaptorImpl::AudioNetworkAdaptorImpl(
     const Config& config,
     std::unique_ptr<ControllerManager> controller_manager)
-    : config_(config), controller_manager_(std::move(controller_manager)) {
+    : AudioNetworkAdaptorImpl(config, std::move(controller_manager), nullptr) {}
+
+AudioNetworkAdaptorImpl::AudioNetworkAdaptorImpl(
+    const Config& config,
+    std::unique_ptr<ControllerManager> controller_manager,
+    std::unique_ptr<DebugDumpWriter> debug_dump_writer)
+    : config_(config),
+      controller_manager_(std::move(controller_manager)),
+      debug_dump_writer_(std::move(debug_dump_writer)) {
   RTC_DCHECK(controller_manager_);
 }
 
 AudioNetworkAdaptorImpl::~AudioNetworkAdaptorImpl() = default;
 
 void AudioNetworkAdaptorImpl::SetUplinkBandwidth(int uplink_bandwidth_bps) {
   last_metrics_.uplink_bandwidth_bps = rtc::Optional<int>(uplink_bandwidth_bps);
-
-  // TODO(minyue): Add debug dumping.
+  DumpNetworkMetrics();
 }
 
 void AudioNetworkAdaptorImpl::SetUplinkPacketLossFraction(
     float uplink_packet_loss_fraction) {
   last_metrics_.uplink_packet_loss_fraction =
       rtc::Optional<float>(uplink_packet_loss_fraction);
+  DumpNetworkMetrics();
+}
 
-  // TODO(minyue): Add debug dumping.
+void AudioNetworkAdaptorImpl::SetRtt(int rtt_ms) {
+  last_metrics_.rtt_ms = rtc::Optional<int>(rtt_ms);
+  DumpNetworkMetrics();
 }
 
 AudioNetworkAdaptor::EncoderRuntimeConfig
 AudioNetworkAdaptorImpl::GetEncoderRuntimeConfig() {
   EncoderRuntimeConfig config;
   for (auto& controller :
        controller_manager_->GetSortedControllers(last_metrics_))
     controller->MakeDecision(last_metrics_, &config);
 
   // TODO(minyue): Add debug dumping.
+  if (debug_dump_writer_)
+    debug_dump_writer_->DumpEncoderRuntimeConfig(
+        config, config_.clock->TimeInMilliseconds());
 
   return config;
 }
 
 void AudioNetworkAdaptorImpl::SetReceiverFrameLengthRange(
     int min_frame_length_ms,
     int max_frame_length_ms) {
   Controller::Constraints constraints;
   constraints.receiver_frame_length_range =
       rtc::Optional<Controller::Constraints::FrameLengthRange>(
           Controller::Constraints::FrameLengthRange(min_frame_length_ms,
                                                     max_frame_length_ms));
   auto controllers = controller_manager_->GetControllers();
   for (auto& controller : controllers)
     controller->SetConstraints(constraints);
 }
 
 void AudioNetworkAdaptorImpl::StartDebugDump(FILE* file_handle) {
-  // TODO(minyue): Implement this method.
+  debug_dump_writer_ = DebugDumpWriter::Create(file_handle);
+}
+
+void AudioNetworkAdaptorImpl::StopDebugDump() {
+  debug_dump_writer_.reset(nullptr);
+}
+
+void AudioNetworkAdaptorImpl::DumpNetworkMetrics() {
+  if (debug_dump_writer_)
+    debug_dump_writer_->DumpNetworkMetrics(last_metrics_,
+                                           config_.clock->TimeInMilliseconds());
 }
 
 }  // namespace webrtc