/* * 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 { … }; // Errors #define AECM_UNSPECIFIED_ERROR … #define AECM_UNSUPPORTED_FUNCTION_ERROR … #define AECM_UNINITIALIZED_ERROR … #define AECM_NULL_POINTER_ERROR … #define AECM_BAD_PARAMETER_ERROR … // Warnings #define AECM_BAD_PARAMETER_WARNING … 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_
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