Added support in the AEC for refined filter adaptation.

webrtc/modules/audio_processing/aec/aec_core.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 99 matching lines @@
 // Returns non-zero if delay agnostic (i.e., signal based delay estimation) is
 // enabled and zero if disabled.
 int WebRtcAec_delay_agnostic_enabled(AecCore* self);
 
 // Non-zero enables, zero disables.
 void WebRtcAec_enable_next_generation_aec(AecCore* self, int enable);
 
 // Returns 1 if the next generation aec is enabled and zero if disabled.
 int WebRtcAec_next_generation_aec_enabled(AecCore* self);
 
+// Turns on/off the refined adaptive filter feature.
+void WebRtcAec_enable_refined_adaptive_filter(AecCore* self, int enable);
+
+// Returns whether the refined adaptive filter is enabled.
+int WebRtcAec_refined_adaptive_filter(const AecCore* self);
+
 // Enables or disables extended filter mode. Non-zero enables, zero disables.
 void WebRtcAec_enable_extended_filter(AecCore* self, int enable);
 
 // Returns non-zero if extended filter mode is enabled and zero if disabled.
 int WebRtcAec_extended_filter_enabled(AecCore* self);
 
 // Returns the current |system_delay|, i.e., the buffered difference between
 // far-end and near-end.
 int WebRtcAec_system_delay(AecCore* self);
 
 // Sets the |system_delay| to |value|.  Note that if the value is changed
 // improperly, there can be a performance regression.  So it should be used with
 // care.
 void WebRtcAec_SetSystemDelay(AecCore* self, int delay);
 
 #endif  // WEBRTC_MODULES_AUDIO_PROCESSING_AEC_AEC_CORE_H_