| /* |
| * 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_INCLUDE_ECHO_CONTROL_MOBILE_H_ |
| #define WEBRTC_MODULES_AUDIO_PROCESSING_AECM_INCLUDE_ECHO_CONTROL_MOBILE_H_ |
| |
| #include "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 { |
| WebRtc_Word16 cngMode; // AECM_FALSE, AECM_TRUE (default) |
| WebRtc_Word16 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. |
| * |
| * Inputs Description |
| * ------------------------------------------------------------------- |
| * void **aecmInst Pointer to the AECM instance to be |
| * created and initialized |
| * |
| * Outputs Description |
| * ------------------------------------------------------------------- |
| * WebRtc_Word32 return 0: OK |
| * -1: error |
| */ |
| WebRtc_Word32 WebRtcAecm_Create(void **aecmInst); |
| |
| /* |
| * This function releases the memory allocated by WebRtcAecm_Create() |
| * |
| * Inputs Description |
| * ------------------------------------------------------------------- |
| * void *aecmInst Pointer to the AECM instance |
| * |
| * Outputs Description |
| * ------------------------------------------------------------------- |
| * WebRtc_Word32 return 0: OK |
| * -1: error |
| */ |
| WebRtc_Word32 WebRtcAecm_Free(void *aecmInst); |
| |
| /* |
| * Initializes an AECM instance. |
| * |
| * Inputs Description |
| * ------------------------------------------------------------------- |
| * void *aecmInst Pointer to the AECM instance |
| * WebRtc_Word32 sampFreq Sampling frequency of data |
| * |
| * Outputs Description |
| * ------------------------------------------------------------------- |
| * WebRtc_Word32 return 0: OK |
| * -1: error |
| */ |
| WebRtc_Word32 WebRtcAecm_Init(void* aecmInst, |
| WebRtc_Word32 sampFreq); |
| |
| /* |
| * Inserts an 80 or 160 sample block of data into the farend buffer. |
| * |
| * Inputs Description |
| * ------------------------------------------------------------------- |
| * void *aecmInst Pointer to the AECM instance |
| * WebRtc_Word16 *farend In buffer containing one frame of |
| * farend signal |
| * WebRtc_Word16 nrOfSamples Number of samples in farend buffer |
| * |
| * Outputs Description |
| * ------------------------------------------------------------------- |
| * WebRtc_Word32 return 0: OK |
| * -1: error |
| */ |
| WebRtc_Word32 WebRtcAecm_BufferFarend(void* aecmInst, |
| const WebRtc_Word16* farend, |
| WebRtc_Word16 nrOfSamples); |
| |
| /* |
| * Runs the AECM on an 80 or 160 sample blocks of data. |
| * |
| * Inputs Description |
| * ------------------------------------------------------------------- |
| * void *aecmInst Pointer to the AECM instance |
| * WebRtc_Word16 *nearendNoisy In buffer containing one frame of |
| * reference nearend+echo signal. If |
| * noise reduction is active, provide |
| * the noisy signal here. |
| * WebRtc_Word16 *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. |
| * WebRtc_Word16 nrOfSamples Number of samples in nearend buffer |
| * WebRtc_Word16 msInSndCardBuf Delay estimate for sound card and |
| * system buffers |
| * |
| * Outputs Description |
| * ------------------------------------------------------------------- |
| * WebRtc_Word16 *out Out buffer, one frame of processed nearend |
| * WebRtc_Word32 return 0: OK |
| * -1: error |
| */ |
| WebRtc_Word32 WebRtcAecm_Process(void* aecmInst, |
| const WebRtc_Word16* nearendNoisy, |
| const WebRtc_Word16* nearendClean, |
| WebRtc_Word16* out, |
| WebRtc_Word16 nrOfSamples, |
| WebRtc_Word16 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 |
| * ------------------------------------------------------------------- |
| * WebRtc_Word32 return 0: OK |
| * -1: error |
| */ |
| WebRtc_Word32 WebRtcAecm_set_config(void* aecmInst, |
| AecmConfig config); |
| |
| /* |
| * This function enables the user to set certain parameters on-the-fly |
| * |
| * Inputs Description |
| * ------------------------------------------------------------------- |
| * void *aecmInst Pointer to the AECM instance |
| * |
| * Outputs Description |
| * ------------------------------------------------------------------- |
| * AecmConfig *config Pointer to the config instance that |
| * all properties will be written to |
| * WebRtc_Word32 return 0: OK |
| * -1: error |
| */ |
| WebRtc_Word32 WebRtcAecm_get_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 |
| * ------------------------------------------------------------------- |
| * WebRtc_Word32 return 0: OK |
| * -1: error |
| */ |
| WebRtc_Word32 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 |
| * ------------------------------------------------------------------- |
| * WebRtc_Word32 return 0: OK |
| * -1: error |
| */ |
| WebRtc_Word32 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(); |
| |
| /* |
| * Gets the last error code. |
| * |
| * Inputs Description |
| * ------------------------------------------------------------------- |
| * void *aecmInst Pointer to the AECM instance |
| * |
| * Outputs Description |
| * ------------------------------------------------------------------- |
| * WebRtc_Word32 return 11000-11100: error code |
| */ |
| WebRtc_Word32 WebRtcAecm_get_error_code(void *aecmInst); |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| #endif // WEBRTC_MODULES_AUDIO_PROCESSING_AECM_INCLUDE_ECHO_CONTROL_MOBILE_H_ |
