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/*
* Copyright (C) 2004-2010 NXP Software
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef _COMP_LIM_H
#define _COMP_LIM_H
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
/************************************************************************************/
/* */
/* Includes */
/* */
/************************************************************************************/
#include "LVM_Types.h"
/************************************************************************************/
/* */
/* Structures */
/* */
/************************************************************************************/
typedef struct /* Compressor state */
{
/* Normaliser */
LVM_INT16 Norm_Attack; /* Attack time constant of the Normaliser integrator */
LVM_INT16 Norm_Decay; /* Decay time constant of the Normaliser integrator */
LVM_INT32 NormInt; /* Normaliser integrator current value */
LVM_INT16 Shift; /* Shift gain */
LVM_INT16 Threshold; /* Target threshold */
/* Compressor */
LVM_INT16 Comp_Atten; /* Attenuation applied before soft knee compressor */
LVM_INT16 Comp_Attack_S; /* Attack time constant of the slow integrator */
LVM_INT16 Comp_Decay_S; /* Decay time constant of slow the integrator */
LVM_INT16 Comp_Attack_F; /* Attack time constant of fast the integrator */
LVM_INT16 Comp_Decay_F; /* Decay time constant of fast the integrator */
LVM_INT16 SoftClipGain; /* Soft clip gain control */
LVM_INT32 CompIntSlow; /* Compressor slow integrator current value */
LVM_INT32 CompIntFast; /* Compressor fast integrator current value */
} CompLim_Instance_t;
/************************************************************************************/
/* */
/* Function Prototypes */
/* */
/************************************************************************************/
void NonLinComp_D16(LVM_INT16 Gain,
LVM_INT16 *pSterBfIn,
LVM_INT16 *pSterBfOut,
LVM_INT32 BlockLength);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* #ifndef _COMP_LIM_H */
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