1 files changed, 67 insertions, 0 deletions
diff --git a/third_party/webrtc/src/webrtc/modules/audio_processing/aec/echo_cancellation_internal.h b/third_party/webrtc/src/webrtc/modules/audio_processing/aec/echo_cancellation_internal.h
new file mode 100644
index 00000000..95a6cf33
--- /dev/null
+++ b/third_party/webrtc/src/webrtc/modules/audio_processing/aec/echo_cancellation_internal.h
@@ -0,0 +1,67 @@
+/*
+ *  Copyright (c) 2012 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.
+ */
+
+#ifndef WEBRTC_MODULES_AUDIO_PROCESSING_AEC_ECHO_CANCELLATION_INTERNAL_H_
+#define WEBRTC_MODULES_AUDIO_PROCESSING_AEC_ECHO_CANCELLATION_INTERNAL_H_
+
+#include "webrtc/common_audio/ring_buffer.h"
+#include "webrtc/modules/audio_processing/aec/aec_core.h"
+
+typedef struct {
+  int delayCtr;
+  int sampFreq;
+  int splitSampFreq;
+  int scSampFreq;
+  float sampFactor;  // scSampRate / sampFreq
+  short skewMode;
+  int bufSizeStart;
+  int knownDelay;
+  int rate_factor;
+
+  short initFlag;  // indicates if AEC has been initialized
+
+  // Variables used for averaging far end buffer size
+  short counter;
+  int sum;
+  short firstVal;
+  short checkBufSizeCtr;
+
+  // Variables used for delay shifts
+  short msInSndCardBuf;
+  short filtDelay;  // Filtered delay estimate.
+  int timeForDelayChange;
+  int startup_phase;
+  int checkBuffSize;
+  short lastDelayDiff;
+
+#ifdef WEBRTC_AEC_DEBUG_DUMP
+  FILE* bufFile;
+  FILE* delayFile;
+  FILE* skewFile;
+#endif
+
+  // Structures
+  void* resampler;
+
+  int skewFrCtr;
+  int resample;  // if the skew is small enough we don't resample
+  int highSkewCtr;
+  float skew;
+
+  RingBuffer* far_pre_buf;  // Time domain far-end pre-buffer.
+
+  int lastError;
+
+  int farend_started;
+
+  AecCore* aec;
+} Aec;
+
+#endif  // WEBRTC_MODULES_AUDIO_PROCESSING_AEC_ECHO_CANCELLATION_INTERNAL_H_