Adding fraction of filter divergence in AEC metrics.

webrtc/modules/audio_processing/aec/aec_core_internal.h

 /*
  *  Copyright (c) 2013 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.
  */
 
 #ifndef WEBRTC_MODULES_AUDIO_PROCESSING_AEC_AEC_CORE_INTERNAL_H_
 #define WEBRTC_MODULES_AUDIO_PROCESSING_AEC_AEC_CORE_INTERNAL_H_
 
+#include <memory>
+
 extern "C" {
 #include "webrtc/common_audio/ring_buffer.h"
 }
 #include "webrtc/common_audio/wav_file.h"
 #include "webrtc/modules/audio_processing/aec/aec_common.h"
 #include "webrtc/modules/audio_processing/aec/aec_core.h"
+#include "webrtc/modules/audio_processing/utility/mean_calculator.h"
 #include "webrtc/typedefs.h"
 
 namespace webrtc {
 
 // Number of partitions for the extended filter mode. The first one is an enum
 // to be used in array declarations, as it represents the maximum filter length.
 enum { kExtendedNumPartitions = 32 };
 static const int kNormalNumPartitions = 12;
 
 // Delay estimator constants, used for logging and delay compensation if
@@ skipping 83 matching lines @@
   PowerLevel nearlevel;
   PowerLevel linoutlevel;
   PowerLevel nlpoutlevel;
 
   int metricsMode;
   int stateCounter;
   Stats erl;
   Stats erle;
   Stats aNlp;
   Stats rerl;
+  std::unique_ptr<webrtc::MeanCalculator> fraction_filter_divergent;

[tlegrand-webrtc, 2016/03/17 12:28:39]

Is webrtc:: needed?

Maybe a better name is just filter_divergence? Or do we need to have "fraction"
in the name? Divergent isn't really the same as Divergence, but maybe you meant
divergent?

[minyue-webrtc, 2016/04/03 21:42:06]

"divergent" was Karl's suggestion. I think it works. I think it is better to put
"fraction" there, since the value will be between 0 and 1, and "fraction" tells
what it means.

 
   // Quantities to control H band scaling for SWB input
   int freq_avg_ic;       // initial bin for averaging nlp gain
   int flag_Hband_cn;     // for comfort noise
   float cn_scale_Hband;  // scale for comfort noise in H band
 
   int delay_metrics_delivered;
   int delay_histogram[kHistorySizeBlocks];
   int num_delay_values;
   int delay_median;
@@ skipping 92 matching lines @@
 typedef void (*WebRtcAecStoreAsComplex)(const float* data,
                                         float data_complex[2][PART_LEN1]);
 extern WebRtcAecStoreAsComplex WebRtcAec_StoreAsComplex;
 
 typedef void (*WebRtcAecWindowData)(float* x_windowed, const float* x);
 extern WebRtcAecWindowData WebRtcAec_WindowData;
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_AUDIO_PROCESSING_AEC_AEC_CORE_INTERNAL_H_