Ducking fix #2: Removed the aec state as an input parameter to the FilterFar function.

webrtc/modules/audio_processing/aec/aec_core_mips.c

 /*
  *  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 302 matching lines @@
     u[PART_LEN][1] = 0;
 
     for (i = 0; i < PART_LEN1; i++) {
       // Use average NLP weight for H band
       comfortNoiseHband[i][0] = tmpAvg * u[i][0];
       comfortNoiseHband[i][1] = tmpAvg * u[i][1];
     }
   }
 }
 
-void WebRtcAec_FilterFar_mips(AecCore* aec, float yf[2][PART_LEN1]) {
+void WebRtcAec_FilterFar_mips(
+    int num_partitions,
+    int xfBufBlockPos,
+    float xfBuf[2][kExtendedNumPartitions * PART_LEN1],
+    float wfBuf[2][kExtendedNumPartitions * PART_LEN1],
+    float yf[2][PART_LEN1]) {
   int i;
-  for (i = 0; i < aec->num_partitions; i++) {
-    int xPos = (i + aec->xfBufBlockPos) * PART_LEN1;
+  for (i = 0; i < num_partitions; i++) {
+    int xPos = (i + xfBufBlockPos) * PART_LEN1;
     int pos = i * PART_LEN1;
     // Check for wrap
-    if (i + aec->xfBufBlockPos >=  aec->num_partitions) {
-      xPos -=  aec->num_partitions * (PART_LEN1);
+    if (i + xfBufBlockPos >=  num_partitions) {
+      xPos -=  num_partitions * (PART_LEN1);
     }
     float* yf0 = yf[0];
     float* yf1 = yf[1];
-    float* aRe = aec->xfBuf[0] + xPos;
-    float* aIm = aec->xfBuf[1] + xPos;
-    float* bRe = aec->wfBuf[0] + pos;
-    float* bIm = aec->wfBuf[1] + pos;
+    float* aRe = xfBuf[0] + xPos;
+    float* aIm = xfBuf[1] + xPos;
+    float* bRe = wfBuf[0] + pos;
+    float* bIm = wfBuf[1] + pos;
     float f0, f1, f2, f3, f4, f5, f6, f7, f8, f9, f10, f11, f12, f13;
     int len = PART_LEN1 >> 1;
 
     __asm __volatile (
       ".set       push                                                \n\t"
       ".set       noreorder                                           \n\t"
      "1:                                                              \n\t"
       "lwc1       %[f0],      0(%[aRe])                               \n\t"
       "lwc1       %[f1],      0(%[bRe])                               \n\t"
       "lwc1       %[f2],      0(%[bIm])                               \n\t"
@@ skipping 419 matching lines @@
   );
 }
 
 void WebRtcAec_InitAec_mips(void) {
   WebRtcAec_FilterFar = WebRtcAec_FilterFar_mips;
   WebRtcAec_FilterAdaptation = WebRtcAec_FilterAdaptation_mips;
   WebRtcAec_ScaleErrorSignal = WebRtcAec_ScaleErrorSignal_mips;
   WebRtcAec_ComfortNoise = WebRtcAec_ComfortNoise_mips;
   WebRtcAec_OverdriveAndSuppress = WebRtcAec_OverdriveAndSuppress_mips;
 }