Broke apart the functionalities in the SubbandCoherence method in the AEC

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.
  */
 
@@ skipping 203 matching lines @@
     float x_fft_buf[2][kExtendedNumPartitions * PART_LEN1],
     float e_fft[2][PART_LEN1],
     float h_fft_buf[2][kExtendedNumPartitions * PART_LEN1]);
 extern WebRtcAecFilterAdaptation WebRtcAec_FilterAdaptation;
 typedef void (*WebRtcAecOverdriveAndSuppress)(float overdrive_scaling,
                                               float hNl[PART_LEN1],
                                               const float hNlFb,
                                               float efw[2][PART_LEN1]);
 extern WebRtcAecOverdriveAndSuppress WebRtcAec_OverdriveAndSuppress;
 
-typedef void (*WebRtcAecSubBandCoherence)(int mult,
-                                          bool extended_filter_enabled,
-                                          float efw[2][PART_LEN1],
-                                          float dfw[2][PART_LEN1],
-                                          float xfw[2][PART_LEN1],
-                                          float* fft,
+typedef void (*WebRtcAecComputeCoherence)(const CoherenceState* coherence_state,
                                           float* cohde,
-                                          float* cohxd,
-                                          CoherenceState* coherence_state,
-                                          short* filter_divergence_state,
-                                          int* extreme_filter_divergence);
-extern WebRtcAecSubBandCoherence WebRtcAec_SubbandCoherence;
+                                          float* cohxd);
+extern WebRtcAecComputeCoherence WebRtcAec_ComputeCoherence;
+
+typedef void (*WebRtcAecUpdateCoherenceSpectra)(int mult,
+                                                bool extended_filter_enabled,
+                                                float efw[2][PART_LEN1],
+                                                float dfw[2][PART_LEN1],
+                                                float xfw[2][PART_LEN1],
+                                                CoherenceState* coherence_state,
+                                                short* filter_divergence_state,
+                                                int* extreme_filter_divergence);
+extern WebRtcAecUpdateCoherenceSpectra WebRtcAec_UpdateCoherenceSpectra;
 
 typedef int (*WebRtcAecPartitionDelay)(
     int num_partitions,
     float h_fft_buf[2][kExtendedNumPartitions * PART_LEN1]);
 extern WebRtcAecPartitionDelay WebRtcAec_PartitionDelay;
 
 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_