Ducking fix #1:Initial refactoring preparing for further AEC work (changes are bitexact).

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 681 matching lines @@
       "swc1      %[temp4],    -4(%[p_efw1])            \n\t"
       : [temp1] "=&f" (temp1), [temp2] "=&f" (temp2), [temp3] "=&f" (temp3),
         [temp4] "=&f" (temp4), [p_efw0] "+r" (p_efw0), [p_efw1] "+r" (p_efw1),
         [p_hNl] "+r" (p_hNl)
       :
       : "memory"
     );
   }
 }
 
-void WebRtcAec_ScaleErrorSignal_mips(AecCore* aec, float ef[2][PART_LEN1]) {
-  const float mu = aec->extended_filter_enabled ? kExtendedMu : aec->normal_mu;
-  const float error_threshold = aec->extended_filter_enabled
+void WebRtcAec_ScaleErrorSignal_mips(int extended_filter_enabled,
+                                     float normal_mu,
+                                     float normal_error_threshold,
+                                     float *xPow,

[hlundin-webrtc, 2015/11/20 10:55:40]

x_pow

[peah-webrtc, 2015/11/23 21:39:07]

Done.

+                                     float ef[2][PART_LEN1]) {
+  const float mu = extended_filter_enabled ? kExtendedMu : normal_mu;
+  const float error_threshold = extended_filter_enabled
                                     ? kExtendedErrorThreshold
-                                    : aec->normal_error_threshold;
+                                    : normal_error_threshold;
   int len = (PART_LEN1);
   float* ef0 = ef[0];
   float* ef1 = ef[1];
-  float* xPow = aec->xPow;
   float fac1 = 1e-10f;
   float err_th2 = error_threshold * error_threshold;
   float f0, f1, f2;
 #if !defined(MIPS32_R2_LE)
   float f3;
 #endif
 
   __asm __volatile (
     ".set       push                                   \n\t"
     ".set       noreorder                              \n\t"
@@ skipping 43 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;
 }
-