5088377d70
> Remove the different block lengths in ns_core > > This CL has bit-exact output. > > What it does: > * Remove the blockLen10Ms, as it is hardcoded to be equal to blockLen. > * This makes outLen to be always zero, so it can be removed too. > * It also avoids the need to have an outBuf, because it is not used, so it is also removed > * Replaced blockLen10Ms by blockLen everywhere, since they were hardcoded to be equal. > * We don't need to check if outLen is zero, because it always is, so it was removed. > * Of course, the outBuf needs no initial set or copying around, because it is not used. > > BUG=webrtc:3811 > R=bjornv@webrtc.org, kwiberg@webrtc.org > > Review URL: https://webrtc-codereview.appspot.com/30539004 TBR=aluebs@webrtc.org Review URL: https://webrtc-codereview.appspot.com/26629004 git-svn-id: http://webrtc.googlecode.com/svn/trunk@7306 4adac7df-926f-26a2-2b94-8c16560cd09d
139 lines
4.0 KiB
C
139 lines
4.0 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 WEBRTC_MODULES_AUDIO_PROCESSING_NS_INCLUDE_NOISE_SUPPRESSION_H_
|
|
#define WEBRTC_MODULES_AUDIO_PROCESSING_NS_INCLUDE_NOISE_SUPPRESSION_H_
|
|
|
|
#include "webrtc/typedefs.h"
|
|
|
|
typedef struct NsHandleT NsHandle;
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/*
|
|
* This function creates an instance to the noise suppression structure
|
|
*
|
|
* Input:
|
|
* - NS_inst : Pointer to noise suppression instance that should be
|
|
* created
|
|
*
|
|
* Output:
|
|
* - NS_inst : Pointer to created noise suppression instance
|
|
*
|
|
* Return value : 0 - Ok
|
|
* -1 - Error
|
|
*/
|
|
int WebRtcNs_Create(NsHandle** NS_inst);
|
|
|
|
|
|
/*
|
|
* This function frees the dynamic memory of a specified noise suppression
|
|
* instance.
|
|
*
|
|
* Input:
|
|
* - NS_inst : Pointer to NS instance that should be freed
|
|
*
|
|
* Return value : 0 - Ok
|
|
* -1 - Error
|
|
*/
|
|
int WebRtcNs_Free(NsHandle* NS_inst);
|
|
|
|
|
|
/*
|
|
* This function initializes a NS instance and has to be called before any other
|
|
* processing is made.
|
|
*
|
|
* Input:
|
|
* - NS_inst : Instance that should be initialized
|
|
* - fs : sampling frequency
|
|
*
|
|
* Output:
|
|
* - NS_inst : Initialized instance
|
|
*
|
|
* Return value : 0 - Ok
|
|
* -1 - Error
|
|
*/
|
|
int WebRtcNs_Init(NsHandle* NS_inst, uint32_t fs);
|
|
|
|
/*
|
|
* This changes the aggressiveness of the noise suppression method.
|
|
*
|
|
* Input:
|
|
* - NS_inst : Noise suppression instance.
|
|
* - mode : 0: Mild, 1: Medium , 2: Aggressive
|
|
*
|
|
* Output:
|
|
* - NS_inst : Updated instance.
|
|
*
|
|
* Return value : 0 - Ok
|
|
* -1 - Error
|
|
*/
|
|
int WebRtcNs_set_policy(NsHandle* NS_inst, int mode);
|
|
|
|
/*
|
|
* This functions estimates the background noise for the inserted speech frame.
|
|
* The input and output signals should always be 10ms (80 or 160 samples).
|
|
*
|
|
* Input
|
|
* - NS_inst : Noise suppression instance.
|
|
* - spframe : Pointer to speech frame buffer for L band
|
|
*
|
|
* Output:
|
|
* - NS_inst : Updated NS instance
|
|
*
|
|
* Return value : 0 - OK
|
|
* -1 - Error
|
|
*/
|
|
int WebRtcNs_Analyze(NsHandle* NS_inst, float* spframe);
|
|
|
|
/*
|
|
* This functions does Noise Suppression for the inserted speech frame. The
|
|
* input and output signals should always be 10ms (80 or 160 samples).
|
|
*
|
|
* Input
|
|
* - NS_inst : Noise suppression instance.
|
|
* - spframe : Pointer to speech frame buffer for L band
|
|
* - spframe_H : Pointer to speech frame buffer for H band
|
|
* - fs : sampling frequency
|
|
*
|
|
* Output:
|
|
* - NS_inst : Updated NS instance
|
|
* - outframe : Pointer to output frame for L band
|
|
* - outframe_H : Pointer to output frame for H band
|
|
*
|
|
* Return value : 0 - OK
|
|
* -1 - Error
|
|
*/
|
|
int WebRtcNs_Process(NsHandle* NS_inst,
|
|
float* spframe,
|
|
float* spframe_H,
|
|
float* outframe,
|
|
float* outframe_H);
|
|
|
|
/* Returns the internally used prior speech probability of the current frame.
|
|
* There is a frequency bin based one as well, with which this should not be
|
|
* confused.
|
|
*
|
|
* Input
|
|
* - handle : Noise suppression instance.
|
|
*
|
|
* Return value : Prior speech probability in interval [0.0, 1.0].
|
|
* -1 - NULL pointer or uninitialized instance.
|
|
*/
|
|
float WebRtcNs_prior_speech_probability(NsHandle* handle);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif // WEBRTC_MODULES_AUDIO_PROCESSING_NS_INCLUDE_NOISE_SUPPRESSION_H_
|