Added support in the AEC for refined filter adaptation.

webrtc/modules/audio_processing/aec/aec_core_sse2.cc

Index: webrtc/modules/audio_processing/aec/aec_core_sse2.cc
diff --git a/webrtc/modules/audio_processing/aec/aec_core_sse2.cc b/webrtc/modules/audio_processing/aec/aec_core_sse2.cc
index 254dbf10e337e25fb55f0ded57ebce003a4c7406..bc1704fdb5633e1b4e522554dab16b74f2f38f61 100644
--- a/webrtc/modules/audio_processing/aec/aec_core_sse2.cc
+++ b/webrtc/modules/audio_processing/aec/aec_core_sse2.cc
@@ -80,13 +80,12 @@ static void FilterFarSSE2(int num_partitions,
 }
 
 static void ScaleErrorSignalSSE2(int extended_filter_enabled,
-                                 float normal_mu,
+                                 float mu,
                                  float normal_error_threshold,
                                  float x_pow[PART_LEN1],
                                  float ef[2][PART_LEN1]) {
   const __m128 k1e_10f = _mm_set1_ps(1e-10f);
-  const __m128 kMu = extended_filter_enabled ? _mm_set1_ps(kExtendedMu)
-                                             : _mm_set1_ps(normal_mu);
+  const __m128 kMu = _mm_set1_ps(mu);

[tlegrand-webrtc, 2016/04/14 14:32:42]

Same comments as for the main function.

[peah-webrtc, 2016/04/14 22:12:41]

Done.

   const __m128 kThresh = extended_filter_enabled
                              ? _mm_set1_ps(kExtendedErrorThreshold)
                              : _mm_set1_ps(normal_error_threshold);
@@ -124,7 +123,6 @@ static void ScaleErrorSignalSSE2(int extended_filter_enabled,
   }
   // scalar code for the remaining items.
   {
-    const float mu = extended_filter_enabled ? kExtendedMu : normal_mu;
     const float error_threshold = extended_filter_enabled
                                       ? kExtendedErrorThreshold
                                       : normal_error_threshold;