Add UMA stats for AEC filter divergence metric.

content/renderer/media/media_stream_audio_processor_options.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_RENDERER_MEDIA_MEDIA_STREAM_AUDIO_PROCESSOR_OPTIONS_H_
 #define CONTENT_RENDERER_MEDIA_MEDIA_STREAM_AUDIO_PROCESSOR_OPTIONS_H_
 
 #include <string>
 
 #include "base/files/file.h"
@@ skipping 85 matching lines @@
   bool default_audio_processing_constraint_value_;
 };
 
 // A helper class to log echo information in general and Echo Cancellation
 // quality in particular.
 class CONTENT_EXPORT EchoInformation {
  public:
   EchoInformation();
   virtual ~EchoInformation();
 
+  // Updates stats. Must be called every time AudioProcessing::ProcessStream()
+  // is called.
   void UpdateAecDelayStats(webrtc::EchoCancellation* echo_cancellation);
+  void UpdateAecDivergentFilterStats(

[tommi (sloooow) - chröme, 2016/06/28 11:43:56]

Do we need two methods? 

[Henrik Grunell, 2016/06/29 08:47:58]

No, done. Kept them internally.

+      webrtc::EchoCancellation* echo_cancellation);
+
+  // Reports AEC divergent filter stats and resets the associated data.
+  void ReportAndResetAecDivergentFilterStats();
 
  private:
-  // Counter to track 5 seconds of processed 10 ms chunks in order to query a
-  // new metric from webrtc::EchoCancellation::GetEchoDelayMetrics().
-  int num_chunks_;
+  // Counter to track 5 seconds of data in order to query a new metric from
+  // webrtc::EchoCancellation::GetEchoDelayMetrics().
+  int delay_stats_time_ms_;
   bool echo_frames_received_;
 
+  // Counter to track 1 second of data in order to query a new divergent filter
+  // fraction metric from webrtc::EchoCancellation::GetMetrics().
+  int divergent_filter_stats_time_ms_;
+
+  // Total number of times we queried for the divergent filter fraction metric.
+  int num_divergent_filter_fraction_;
+
+  // Number of non-zero divergent filter fraction metrics.
+  int num_non_zero_divergent_filter_fraction_;
+
   DISALLOW_COPY_AND_ASSIGN(EchoInformation);
 };
 
 // Enables the echo cancellation in |audio_processing|.
 void EnableEchoCancellation(AudioProcessing* audio_processing);
 
 // Enables the noise suppression in |audio_processing|.
 void EnableNoiseSuppression(AudioProcessing* audio_processing,
                             webrtc::NoiseSuppression::Level ns_level);
 
@@ skipping 20 matching lines @@
 
 // Returns the array geometry from the media constraints if existing and
 // otherwise that provided by the input device.
 CONTENT_EXPORT std::vector<webrtc::Point> GetArrayGeometryPreferringConstraints(
     const MediaAudioConstraints& audio_constraints,
     const MediaStreamDevice::AudioDeviceParameters& input_params);
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_MEDIA_MEDIA_STREAM_AUDIO_PROCESSOR_OPTIONS_H_