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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.
*/
/************************************************************************/
/* */
/* Project:: */
/* $Author: beq07716 $*/
/* $Revision: 771 $*/
/* $Date: 2010-06-14 10:41:36 +0200 (Mon, 14 Jun 2010) $*/
/* */
/************************************************************************/
#ifndef _FILTER_H_
#define _FILTER_H_
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
/**********************************************************************************
INCLUDES
***********************************************************************************/
#include "LVM_Types.h"
#include "BIQUAD.h"
/**********************************************************************************
DEFINES
***********************************************************************************/
#define FILTER_LOSS 32730 /* -0.01dB loss to avoid wrapping due to band ripple */
/**********************************************************************************
FUNCTION PROTOTYPES
***********************************************************************************/
LVM_INT32 LVM_Polynomial(LVM_UINT16 N,
LVM_INT32 *pCoefficients,
LVM_INT32 X);
LVM_INT32 LVM_Power10( LVM_INT32 X);
LVM_INT32 LVM_FO_LPF( LVM_INT32 w,
FO_C32_Coefs_t *pCoeffs);
LVM_INT32 LVM_FO_HPF( LVM_INT32 w,
FO_C32_Coefs_t *pCoeffs);
LVM_INT32 LVM_GetOmega(LVM_UINT16 Fc,
LVM_Fs_en SampleRate);
/**********************************************************************************/
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /** _FILTER_H_ **/
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