echo_control_mobile.cc | Explore in Territory

/*
 *  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.
 */

#include "modules/audio_processing/aecm/echo_control_mobile.h"

#ifdef AEC_DEBUG
#include <stdio.h>
#endif
#include <stdlib.h>
#include <string.h>

extern "C" {
#include "common_audio/ring_buffer.h"
#include "common_audio/signal_processing/include/signal_processing_library.h"
#include "modules/audio_processing/aecm/aecm_defines.h"
}
#include "modules/audio_processing/aecm/aecm_core.h"

namespace webrtc {

namespace {

#define BUF_SIZE_FRAMES …
// Maximum length of resampled signal. Must be an integer multiple of frames
// (ceil(1/(1 + MIN_SKEW)*2) + 1)*FRAME_LEN
// The factor of 2 handles wb, and the + 1 is as a safety margin
#define MAX_RESAMP_LEN …

static const size_t kBufSizeSamp = …;  // buffer size (samples)
static const int kSampMsNb = …;   // samples per ms in nb
// Target suppression levels for nlp modes
// log{0.001, 0.00001, 0.00000001}
static const int kInitCheck = …;

AecMobile;

}  // namespace

// Estimates delay to set the position of the farend buffer read pointer
// (controlled by knownDelay)
static int WebRtcAecm_EstBufDelay(AecMobile* aecm, short msInSndCardBuf);

// Stuffs the farend buffer if the estimated delay is too large
static int WebRtcAecm_DelayComp(AecMobile* aecm);

void* WebRtcAecm_Create() { … }

void WebRtcAecm_Free(void* aecmInst) { … }

int32_t WebRtcAecm_Init(void* aecmInst, int32_t sampFreq) { … }

// Returns any error that is caused when buffering the
// farend signal.
int32_t WebRtcAecm_GetBufferFarendError(void* aecmInst,
                                        const int16_t* farend,
                                        size_t nrOfSamples) { … }

int32_t WebRtcAecm_BufferFarend(void* aecmInst,
                                const int16_t* farend,
                                size_t nrOfSamples) { … }

int32_t WebRtcAecm_Process(void* aecmInst,
                           const int16_t* nearendNoisy,
                           const int16_t* nearendClean,
                           int16_t* out,
                           size_t nrOfSamples,
                           int16_t msInSndCardBuf) { … }

int32_t WebRtcAecm_set_config(void* aecmInst, AecmConfig config) { … }

int32_t WebRtcAecm_InitEchoPath(void* aecmInst,
                                const void* echo_path,
                                size_t size_bytes) { … }

int32_t WebRtcAecm_GetEchoPath(void* aecmInst,
                               void* echo_path,
                               size_t size_bytes) { … }

size_t WebRtcAecm_echo_path_size_bytes() { … }

static int WebRtcAecm_EstBufDelay(AecMobile* aecm, short msInSndCardBuf) { … }

static int WebRtcAecm_DelayComp(AecMobile* aecm) { … }

}  // namespace webrtc
chromium/third_party/webrtc/modules/audio_processing/aecm/echo_control_mobile.cc
