Refactoring of the buffering of the nearend signal done inside the AEC

webrtc/modules/audio_processing/aec/aec_core.h

Index: webrtc/modules/audio_processing/aec/aec_core.h
diff --git a/webrtc/modules/audio_processing/aec/aec_core.h b/webrtc/modules/audio_processing/aec/aec_core.h
index 1ab20201860d9490f04033c2869c6ce2d90a1a90..654e2b2d0a5b64192682442f66d2a7f58927082b 100644
--- a/webrtc/modules/audio_processing/aec/aec_core.h
+++ b/webrtc/modules/audio_processing/aec/aec_core.h
@@ -128,16 +128,16 @@ struct AecCore {
   int inSamples, outSamples;
   int delayEstCtr;
 
-  RingBuffer* nearFrBuf;
+  float nearend_buffer[NUM_HIGH_BANDS_MAX + 1]
+                      [PART_LEN - (FRAME_LEN - PART_LEN)];

[hlundin-webrtc, 2016/09/07 21:28:46]

Please, explain the sizes.

[peah-webrtc, 2016/09/08 09:50:26]

Done.

+  int nearend_buffer_size;
   RingBuffer* outFrBuf;
 
-  RingBuffer* nearFrBufH[NUM_HIGH_BANDS_MAX];
   RingBuffer* outFrBufH[NUM_HIGH_BANDS_MAX];
 
-  float dBuf[PART_LEN2];  // nearend
   float eBuf[PART_LEN2];  // error
 
-  float dBufH[NUM_HIGH_BANDS_MAX][PART_LEN2];  // nearend
+  float previous_nearend_block[NUM_HIGH_BANDS_MAX + 1][PART_LEN];
 
   float xPow[PART_LEN1];
   float dPow[PART_LEN1];