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68 lines
1.7 KiB
C
68 lines
1.7 KiB
C
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/*
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* Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef WEBRTC_MODULES_AUDIO_PROCESSING_AEC_ECHO_CANCELLATION_INTERNAL_H_
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#define WEBRTC_MODULES_AUDIO_PROCESSING_AEC_ECHO_CANCELLATION_INTERNAL_H_
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#include "webrtc/modules/audio_processing/aec/aec_core.h"
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#include "webrtc/modules/audio_processing/utility/ring_buffer.h"
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typedef struct {
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int delayCtr;
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int sampFreq;
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int splitSampFreq;
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int scSampFreq;
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float sampFactor; // scSampRate / sampFreq
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short skewMode;
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int bufSizeStart;
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int knownDelay;
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int rate_factor;
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short initFlag; // indicates if AEC has been initialized
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// Variables used for averaging far end buffer size
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short counter;
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int sum;
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short firstVal;
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short checkBufSizeCtr;
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// Variables used for delay shifts
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short msInSndCardBuf;
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short filtDelay; // Filtered delay estimate.
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int timeForDelayChange;
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int startup_phase;
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int checkBuffSize;
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short lastDelayDiff;
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#ifdef WEBRTC_AEC_DEBUG_DUMP
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FILE* bufFile;
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FILE* delayFile;
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FILE* skewFile;
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#endif
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// Structures
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void* resampler;
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int skewFrCtr;
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int resample; // if the skew is small enough we don't resample
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int highSkewCtr;
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float skew;
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RingBuffer* far_pre_buf; // Time domain far-end pre-buffer.
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int lastError;
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int farend_started;
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AecCore* aec;
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} aecpc_t;
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#endif // WEBRTC_MODULES_AUDIO_PROCESSING_AEC_ECHO_CANCELLATION_INTERNAL_H_
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