New statistics interface for APM

webrtc/modules/audio_processing/audio_processing_impl.cc

Index: webrtc/modules/audio_processing/audio_processing_impl.cc
diff --git a/webrtc/modules/audio_processing/audio_processing_impl.cc b/webrtc/modules/audio_processing/audio_processing_impl.cc
index c892b7886c71a4ad78603484808cc4e82774e20e..618a4bc776003cddcccd222960e284129318b8fa 100644
--- a/webrtc/modules/audio_processing/audio_processing_impl.cc
+++ b/webrtc/modules/audio_processing/audio_processing_impl.cc
@@ -433,6 +433,10 @@ int AudioProcessingImpl::InitializeLocked() {
   public_submodules_->echo_cancellation->Initialize(
       proc_sample_rate_hz(), num_reverse_channels(), num_output_channels(),
       num_proc_channels());
+  int success = public_submodules_->echo_cancellation->enable_metrics(true);
+  RTC_DCHECK_EQ(0, success);
+  success = public_submodules_->echo_cancellation->enable_delay_logging(true);
+  RTC_DCHECK_EQ(0, success);
   public_submodules_->echo_control_mobile->Initialize(
       proc_split_sample_rate_hz(), num_reverse_channels(),
       num_output_channels());
@@ -1278,6 +1282,22 @@ int AudioProcessingImpl::StopDebugRecording() {
 #endif  // WEBRTC_AUDIOPROC_DEBUG_DUMP
 }
 
+AudioProcessing::AudioProcessingStatistics AudioProcessingImpl::GetStatistics()
+    const {
+  AudioProcessingStatistics stats;
+  EchoCancellation::Metrics metrics;
+  public_submodules_->echo_cancellation->GetMetrics(&metrics);
+  stats.a_nlp = metrics.a_nlp;
+  stats.divergent_filter_fraction = metrics.divergent_filter_fraction;
+  stats.echo_return_loss = metrics.echo_return_loss;
+  stats.echo_return_loss_enhancement = metrics.echo_return_loss_enhancement;
+  stats.residual_echo_return_loss = metrics.residual_echo_return_loss;
+  public_submodules_->echo_cancellation->GetDelayMetrics(
+      &stats.delay_median, &stats.delay_standard_deviation,
+      &stats.fraction_poor_delays);
+  return stats;
+}
+
 EchoCancellation* AudioProcessingImpl::echo_cancellation() const {
   return public_submodules_->echo_cancellation.get();
 }