New statistics interface for APM

webrtc/modules/audio_processing/echo_cancellation_impl.h

 /*
  *  Copyright (c) 2012 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 39 matching lines @@
   std::string GetExperimentsDescription();
   bool is_refined_adaptive_filter_enabled() const;
 
   // Reads render side data that has been queued on the render call.
   // Called holding the capture lock.
   void ReadQueuedRenderData();
 
   // Returns the system delay of the first AEC component.
   int GetSystemDelayInSamples() const;
 
+  // Enable logging of various AEC statistics.
+  int enable_metrics(bool enable) override;
+
+  // Provides various statistics about the AEC.
+  int GetMetrics(Metrics* metrics) override;
+
+  // Enable logging of delay metrics.
+  int enable_delay_logging(bool enable) override;
+
+  // Provides delay metrics.
+  int GetDelayMetrics(int* median,
+                      int* std,
+                      float* fraction_poor_delays) override;
+
  private:
   class Canceller;
   struct StreamProperties;
 
   // EchoCancellation implementation.
   int Enable(bool enable) override;
   int enable_drift_compensation(bool enable) override;
   void set_stream_drift_samples(int drift) override;
   int set_suppression_level(SuppressionLevel level) override;
-  int enable_metrics(bool enable) override;
   bool are_metrics_enabled() const override;
   bool stream_has_echo() const override;
-  int GetMetrics(Metrics* metrics) override;
-  int enable_delay_logging(bool enable) override;
   bool is_delay_logging_enabled() const override;
   int GetDelayMetrics(int* median, int* std) override;
-  int GetDelayMetrics(int* median,
-                      int* std,
-                      float* fraction_poor_delays) override;
 
   struct AecCore* aec_core() const override;
 
   size_t NumCancellersRequired() const;
 
   void AllocateRenderQueue();
   int Configure();
 
   rtc::CriticalSection* const crit_render_ ACQUIRED_BEFORE(crit_capture_);
   rtc::CriticalSection* const crit_capture_;
@@ skipping 22 matching lines @@
 
   std::vector<std::unique_ptr<Canceller>> cancellers_;
   std::unique_ptr<StreamProperties> stream_properties_;
 
   RTC_DISALLOW_IMPLICIT_CONSTRUCTORS(EchoCancellationImpl);
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_AUDIO_PROCESSING_ECHO_CANCELLATION_IMPL_H_