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      1 /*
      2  * Copyright (C) 2004-2010 NXP Software
      3  * Copyright (C) 2010 The Android Open Source Project
      4  *
      5  * Licensed under the Apache License, Version 2.0 (the "License");
      6  * you may not use this file except in compliance with the License.
      7  * You may obtain a copy of the License at
      8  *
      9  *      http://www.apache.org/licenses/LICENSE-2.0
     10  *
     11  * Unless required by applicable law or agreed to in writing, software
     12  * distributed under the License is distributed on an "AS IS" BASIS,
     13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14  * See the License for the specific language governing permissions and
     15  * limitations under the License.
     16  */
     17 
     18 /*-------------------------------------------------------------------------*/
     19 #include "BIQUAD.h"
     20 #include "BQ_1I_D16F16Css_TRC_WRA_01_Private.h"
     21 
     22 /*-------------------------------------------------------------------------*/
     23 /* FUNCTION:                                                               */
     24 /*   BQ_1I_D16F16Css_TRC_WRA_01_Init                                       */
     25 /*                                                                         */
     26 /* DESCRIPTION:                                                            */
     27 /*   These functions initializes a BIQUAD filter defined as a cascade of   */
     28 /*   biquadratic Filter Sections.                                          */
     29 /*                                                                         */
     30 /* PARAMETERS:                                                             */
     31 /*   pInstance    - output, returns the pointer to the State Variable      */
     32 /*                   This state pointer must be passed to any subsequent   */
     33 /*                   call to "Biquad" functions.                           */
     34 /*   pTaps         - input, pointer to the taps memory                     */
     35 /*   pCoef         - input, pointer to the coefficient structure           */
     36 /*   N             - M coefficient factor of QM.N                          */
     37 /* RETURNS:                                                                */
     38 /*   void return code                                                      */
     39 /*-------------------------------------------------------------------------*/
     40 void BQ_1I_D16F16Css_TRC_WRA_01_Init (   Biquad_Instance_t         *pInstance,
     41                                          Biquad_1I_Order2_Taps_t   *pTaps,
     42                                          BQ_C16_Coefs_t            *pCoef)
     43 {
     44   LVM_INT16 temp;
     45   PFilter_State pBiquadState = (PFilter_State) pInstance;
     46   pBiquadState->pDelays      =(LVM_INT32 *) pTaps            ;
     47 
     48   temp=pCoef->A2;
     49   pBiquadState->coefs[0]=temp;
     50   temp=pCoef->A1;
     51   pBiquadState->coefs[1]=temp;
     52   temp=pCoef->A0;
     53   pBiquadState->coefs[2]=temp;
     54   temp=pCoef->B2;
     55   pBiquadState->coefs[3]=temp;
     56   temp=pCoef->B1;
     57   pBiquadState->coefs[4]=temp;
     58 }
     59 /*-------------------------------------------------------------------------*/
     60 /* End Of File: BQ_1I_D16F16Css_TRC_WRA_01_Init.c                              */
     61 
     62