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..b504e5c583c0383f0516904238022ff3dc9a1391 100644
--- a/webrtc/modules/audio_processing/audio_processing_impl.cc
+++ b/webrtc/modules/audio_processing/audio_processing_impl.cc
@@ -1278,6 +1278,29 @@ int AudioProcessingImpl::StopDebugRecording() {
 #endif  // WEBRTC_AUDIOPROC_DEBUG_DUMP
 }
 
+void AudioProcessingImpl::SetStatisticsEnabled(bool enabled) {
+  int success = public_submodules_->echo_cancellation->enable_metrics(enabled);
+  RTC_DCHECK_EQ(0, success);
+  success =
+      public_submodules_->echo_cancellation->enable_delay_logging(enabled);
+  RTC_DCHECK_EQ(0, success);
+}
+
+void AudioProcessingImpl::GetStatistics(
+    AudioProcessingStatistics* stats) const {
+  RTC_DCHECK(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);
+}
+
 EchoCancellation* AudioProcessingImpl::echo_cancellation() const {
   return public_submodules_->echo_cancellation.get();
 }