diff options
Diffstat (limited to 'webrtc/modules/audio_processing/aec/include/echo_cancellation.h')
| -rw-r--r-- | webrtc/modules/audio_processing/aec/include/echo_cancellation.h | 245 |
1 files changed, 0 insertions, 245 deletions
diff --git a/webrtc/modules/audio_processing/aec/include/echo_cancellation.h b/webrtc/modules/audio_processing/aec/include/echo_cancellation.h deleted file mode 100644 index a340cf84d0..0000000000 --- a/webrtc/modules/audio_processing/aec/include/echo_cancellation.h +++ /dev/null @@ -1,245 +0,0 @@ -/* - * 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_AEC_INCLUDE_ECHO_CANCELLATION_H_ -#define WEBRTC_MODULES_AUDIO_PROCESSING_AEC_INCLUDE_ECHO_CANCELLATION_H_ - -#include <stddef.h> - -#include "webrtc/typedefs.h" - -// Errors -#define AEC_UNSPECIFIED_ERROR 12000 -#define AEC_UNSUPPORTED_FUNCTION_ERROR 12001 -#define AEC_UNINITIALIZED_ERROR 12002 -#define AEC_NULL_POINTER_ERROR 12003 -#define AEC_BAD_PARAMETER_ERROR 12004 - -// Warnings -#define AEC_BAD_PARAMETER_WARNING 12050 - -enum { - kAecNlpConservative = 0, - kAecNlpModerate, - kAecNlpAggressive -}; - -enum { - kAecFalse = 0, - kAecTrue -}; - -typedef struct { - int16_t nlpMode; // default kAecNlpModerate - int16_t skewMode; // default kAecFalse - int16_t metricsMode; // default kAecFalse - int delay_logging; // default kAecFalse - // float realSkew; -} AecConfig; - -typedef struct { - int instant; - int average; - int max; - int min; -} AecLevel; - -typedef struct { - AecLevel rerl; - AecLevel erl; - AecLevel erle; - AecLevel aNlp; -} AecMetrics; - -struct AecCore; - -#ifdef __cplusplus -extern "C" { -#endif - -/* - * Allocates the memory needed by the AEC. The memory needs to be initialized - * separately using the WebRtcAec_Init() function. Returns a pointer to the - * object or NULL on error. - */ -void* WebRtcAec_Create(); - -/* - * This function releases the memory allocated by WebRtcAec_Create(). - * - * Inputs Description - * ------------------------------------------------------------------- - * void* aecInst Pointer to the AEC instance - */ -void WebRtcAec_Free(void* aecInst); - -/* - * Initializes an AEC instance. - * - * Inputs Description - * ------------------------------------------------------------------- - * void* aecInst Pointer to the AEC instance - * int32_t sampFreq Sampling frequency of data - * int32_t scSampFreq Soundcard sampling frequency - * - * Outputs Description - * ------------------------------------------------------------------- - * int32_t return 0: OK - * -1: error - */ -int32_t WebRtcAec_Init(void* aecInst, int32_t sampFreq, int32_t scSampFreq); - -/* - * Inserts an 80 or 160 sample block of data into the farend buffer. - * - * Inputs Description - * ------------------------------------------------------------------- - * void* aecInst Pointer to the AEC instance - * const float* farend In buffer containing one frame of - * farend signal for L band - * int16_t nrOfSamples Number of samples in farend buffer - * - * Outputs Description - * ------------------------------------------------------------------- - * int32_t return 0: OK - * -1: error - */ -int32_t WebRtcAec_BufferFarend(void* aecInst, - const float* farend, - size_t nrOfSamples); - -/* - * Runs the echo canceller on an 80 or 160 sample blocks of data. - * - * Inputs Description - * ------------------------------------------------------------------- - * void* aecInst Pointer to the AEC instance - * float* const* nearend In buffer containing one frame of - * nearend+echo signal for each band - * int num_bands Number of bands in nearend buffer - * int16_t nrOfSamples Number of samples in nearend buffer - * int16_t msInSndCardBuf Delay estimate for sound card and - * system buffers - * int16_t skew Difference between number of samples played - * and recorded at the soundcard (for clock skew - * compensation) - * - * Outputs Description - * ------------------------------------------------------------------- - * float* const* out Out buffer, one frame of processed nearend - * for each band - * int32_t return 0: OK - * -1: error - */ -int32_t WebRtcAec_Process(void* aecInst, - const float* const* nearend, - size_t num_bands, - float* const* out, - size_t nrOfSamples, - int16_t msInSndCardBuf, - int32_t skew); - -/* - * This function enables the user to set certain parameters on-the-fly. - * - * Inputs Description - * ------------------------------------------------------------------- - * void* handle Pointer to the AEC instance - * AecConfig config Config instance that contains all - * properties to be set - * - * Outputs Description - * ------------------------------------------------------------------- - * int return 0: OK - * -1: error - */ -int WebRtcAec_set_config(void* handle, AecConfig config); - -/* - * Gets the current echo status of the nearend signal. - * - * Inputs Description - * ------------------------------------------------------------------- - * void* handle Pointer to the AEC instance - * - * Outputs Description - * ------------------------------------------------------------------- - * int* status 0: Almost certainly nearend single-talk - * 1: Might not be neared single-talk - * int return 0: OK - * -1: error - */ -int WebRtcAec_get_echo_status(void* handle, int* status); - -/* - * Gets the current echo metrics for the session. - * - * Inputs Description - * ------------------------------------------------------------------- - * void* handle Pointer to the AEC instance - * - * Outputs Description - * ------------------------------------------------------------------- - * AecMetrics* metrics Struct which will be filled out with the - * current echo metrics. - * int return 0: OK - * -1: error - */ -int WebRtcAec_GetMetrics(void* handle, AecMetrics* metrics); - -/* - * Gets the current delay metrics for the session. - * - * Inputs Description - * ------------------------------------------------------------------- - * void* handle Pointer to the AEC instance - * - * Outputs Description - * ------------------------------------------------------------------- - * int* median Delay median value. - * int* std Delay standard deviation. - * float* fraction_poor_delays Fraction of the delay estimates that may - * cause the AEC to perform poorly. - * - * int return 0: OK - * -1: error - */ -int WebRtcAec_GetDelayMetrics(void* handle, - int* median, - int* std, - float* fraction_poor_delays); - -/* - * Gets the last error code. - * - * Inputs Description - * ------------------------------------------------------------------- - * void* aecInst Pointer to the AEC instance - * - * Outputs Description - * ------------------------------------------------------------------- - * int32_t return 11000-11100: error code - */ -int32_t WebRtcAec_get_error_code(void* aecInst); - -// Returns a pointer to the low level AEC handle. -// -// Input: -// - handle : Pointer to the AEC instance. -// -// Return value: -// - AecCore pointer : NULL for error. -// -struct AecCore* WebRtcAec_aec_core(void* handle); - -#ifdef __cplusplus -} -#endif -#endif // WEBRTC_MODULES_AUDIO_PROCESSING_AEC_INCLUDE_ECHO_CANCELLATION_H_ |