210 lines
7.8 KiB
C
210 lines
7.8 KiB
C
|
/*
|
||
|
|
* 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 MODULES_AUDIO_PROCESSING_AECM_ECHO_CONTROL_MOBILE_H_
|
||
|
|
#define MODULES_AUDIO_PROCESSING_AECM_ECHO_CONTROL_MOBILE_H_
|
||
|
|
|
||
|
|
#include <stddef.h>
|
||
|
|
#include <stdint.h>
|
||
|
|
|
||
|
|
namespace webrtc {
|
||
|
|
|
||
|
|
enum { AecmFalse = 0, AecmTrue };
|
||
|
|
|
||
|
|
// Errors
|
||
|
|
#define AECM_UNSPECIFIED_ERROR 12000
|
||
|
|
#define AECM_UNSUPPORTED_FUNCTION_ERROR 12001
|
||
|
|
#define AECM_UNINITIALIZED_ERROR 12002
|
||
|
|
#define AECM_NULL_POINTER_ERROR 12003
|
||
|
|
#define AECM_BAD_PARAMETER_ERROR 12004
|
||
|
|
|
||
|
|
// Warnings
|
||
|
|
#define AECM_BAD_PARAMETER_WARNING 12100
|
||
|
|
|
||
|
|
typedef struct {
|
||
|
|
int16_t cngMode; // AECM_FALSE, AECM_TRUE (default)
|
||
|
|
int16_t echoMode; // 0, 1, 2, 3 (default), 4
|
||
|
|
} AecmConfig;
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
extern "C" {
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Allocates the memory needed by the AECM. The memory needs to be
|
||
|
|
* initialized separately using the WebRtcAecm_Init() function.
|
||
|
|
* Returns a pointer to the instance and a nullptr at failure.
|
||
|
|
*/
|
||
|
|
void* WebRtcAecm_Create();
|
||
|
|
|
||
|
|
/*
|
||
|
|
* This function releases the memory allocated by WebRtcAecm_Create()
|
||
|
|
*
|
||
|
|
* Inputs Description
|
||
|
|
* -------------------------------------------------------------------
|
||
|
|
* void* aecmInst Pointer to the AECM instance
|
||
|
|
*/
|
||
|
|
void WebRtcAecm_Free(void* aecmInst);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Initializes an AECM instance.
|
||
|
|
*
|
||
|
|
* Inputs Description
|
||
|
|
* -------------------------------------------------------------------
|
||
|
|
* void* aecmInst Pointer to the AECM instance
|
||
|
|
* int32_t sampFreq Sampling frequency of data
|
||
|
|
*
|
||
|
|
* Outputs Description
|
||
|
|
* -------------------------------------------------------------------
|
||
|
|
* int32_t return 0: OK
|
||
|
|
* 1200-12004,12100: error/warning
|
||
|
|
*/
|
||
|
|
int32_t WebRtcAecm_Init(void* aecmInst, int32_t sampFreq);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Inserts an 80 or 160 sample block of data into the farend buffer.
|
||
|
|
*
|
||
|
|
* Inputs Description
|
||
|
|
* -------------------------------------------------------------------
|
||
|
|
* void* aecmInst Pointer to the AECM instance
|
||
|
|
* int16_t* farend In buffer containing one frame of
|
||
|
|
* farend signal
|
||
|
|
* int16_t nrOfSamples Number of samples in farend buffer
|
||
|
|
*
|
||
|
|
* Outputs Description
|
||
|
|
* -------------------------------------------------------------------
|
||
|
|
* int32_t return 0: OK
|
||
|
|
* 1200-12004,12100: error/warning
|
||
|
|
*/
|
||
|
|
int32_t WebRtcAecm_BufferFarend(void* aecmInst,
|
||
|
|
const int16_t* farend,
|
||
|
|
size_t nrOfSamples);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Reports any errors that would arise when buffering a farend buffer.
|
||
|
|
*
|
||
|
|
* Inputs Description
|
||
|
|
* -------------------------------------------------------------------
|
||
|
|
* void* aecmInst Pointer to the AECM instance
|
||
|
|
* int16_t* farend In buffer containing one frame of
|
||
|
|
* farend signal
|
||
|
|
* int16_t nrOfSamples Number of samples in farend buffer
|
||
|
|
*
|
||
|
|
* Outputs Description
|
||
|
|
* -------------------------------------------------------------------
|
||
|
|
* int32_t return 0: OK
|
||
|
|
* 1200-12004,12100: error/warning
|
||
|
|
*/
|
||
|
|
int32_t WebRtcAecm_GetBufferFarendError(void* aecmInst,
|
||
|
|
const int16_t* farend,
|
||
|
|
size_t nrOfSamples);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Runs the AECM on an 80 or 160 sample blocks of data.
|
||
|
|
*
|
||
|
|
* Inputs Description
|
||
|
|
* -------------------------------------------------------------------
|
||
|
|
* void* aecmInst Pointer to the AECM instance
|
||
|
|
* int16_t* nearendNoisy In buffer containing one frame of
|
||
|
|
* reference nearend+echo signal. If
|
||
|
|
* noise reduction is active, provide
|
||
|
|
* the noisy signal here.
|
||
|
|
* int16_t* nearendClean In buffer containing one frame of
|
||
|
|
* nearend+echo signal. If noise
|
||
|
|
* reduction is active, provide the
|
||
|
|
* clean signal here. Otherwise pass a
|
||
|
|
* NULL pointer.
|
||
|
|
* int16_t nrOfSamples Number of samples in nearend buffer
|
||
|
|
* int16_t msInSndCardBuf Delay estimate for sound card and
|
||
|
|
* system buffers
|
||
|
|
*
|
||
|
|
* Outputs Description
|
||
|
|
* -------------------------------------------------------------------
|
||
|
|
* int16_t* out Out buffer, one frame of processed nearend
|
||
|
|
* int32_t return 0: OK
|
||
|
|
* 1200-12004,12100: error/warning
|
||
|
|
*/
|
||
|
|
int32_t WebRtcAecm_Process(void* aecmInst,
|
||
|
|
const int16_t* nearendNoisy,
|
||
|
|
const int16_t* nearendClean,
|
||
|
|
int16_t* out,
|
||
|
|
size_t nrOfSamples,
|
||
|
|
int16_t msInSndCardBuf);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* This function enables the user to set certain parameters on-the-fly
|
||
|
|
*
|
||
|
|
* Inputs Description
|
||
|
|
* -------------------------------------------------------------------
|
||
|
|
* void* aecmInst Pointer to the AECM instance
|
||
|
|
* AecmConfig config Config instance that contains all
|
||
|
|
* properties to be set
|
||
|
|
*
|
||
|
|
* Outputs Description
|
||
|
|
* -------------------------------------------------------------------
|
||
|
|
* int32_t return 0: OK
|
||
|
|
* 1200-12004,12100: error/warning
|
||
|
|
*/
|
||
|
|
int32_t WebRtcAecm_set_config(void* aecmInst, AecmConfig config);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* This function enables the user to set the echo path on-the-fly.
|
||
|
|
*
|
||
|
|
* Inputs Description
|
||
|
|
* -------------------------------------------------------------------
|
||
|
|
* void* aecmInst Pointer to the AECM instance
|
||
|
|
* void* echo_path Pointer to the echo path to be set
|
||
|
|
* size_t size_bytes Size in bytes of the echo path
|
||
|
|
*
|
||
|
|
* Outputs Description
|
||
|
|
* -------------------------------------------------------------------
|
||
|
|
* int32_t return 0: OK
|
||
|
|
* 1200-12004,12100: error/warning
|
||
|
|
*/
|
||
|
|
int32_t WebRtcAecm_InitEchoPath(void* aecmInst,
|
||
|
|
const void* echo_path,
|
||
|
|
size_t size_bytes);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* This function enables the user to get the currently used echo path
|
||
|
|
* on-the-fly
|
||
|
|
*
|
||
|
|
* Inputs Description
|
||
|
|
* -------------------------------------------------------------------
|
||
|
|
* void* aecmInst Pointer to the AECM instance
|
||
|
|
* void* echo_path Pointer to echo path
|
||
|
|
* size_t size_bytes Size in bytes of the echo path
|
||
|
|
*
|
||
|
|
* Outputs Description
|
||
|
|
* -------------------------------------------------------------------
|
||
|
|
* int32_t return 0: OK
|
||
|
|
* 1200-12004,12100: error/warning
|
||
|
|
*/
|
||
|
|
int32_t WebRtcAecm_GetEchoPath(void* aecmInst,
|
||
|
|
void* echo_path,
|
||
|
|
size_t size_bytes);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* This function enables the user to get the echo path size in bytes
|
||
|
|
*
|
||
|
|
* Outputs Description
|
||
|
|
* -------------------------------------------------------------------
|
||
|
|
* size_t return Size in bytes
|
||
|
|
*/
|
||
|
|
size_t WebRtcAecm_echo_path_size_bytes();
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
} // namespace webrtc
|
||
|
|
|
||
|
|
#endif // MODULES_AUDIO_PROCESSING_AECM_ECHO_CONTROL_MOBILE_H_
|