| /* |
| * 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_AECM_ECHO_CONTROL_MOBILE_H_ |
| #define WEBRTC_MODULES_AUDIO_PROCESSING_AECM_ECHO_CONTROL_MOBILE_H_ |
| |
| #include <stdlib.h> |
| |
| #include "webrtc/typedefs.h" |
| |
| 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 |
| #endif // WEBRTC_MODULES_AUDIO_PROCESSING_AECM_ECHO_CONTROL_MOBILE_H_ |
