Home | History | Annotate | Download | only in src 
      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_D16F32Css_TRC_WRA_01_Private.h"
     21 
     22 
     23 /*-------------------------------------------------------------------------*/
     24 /* FUNCTION:                                                               */
     25 /*   BQ_1I_D16F32Css_TRC_WRA_01_Init                                       */
     26 /*                                                                         */
     27 /* DESCRIPTION:                                                            */
     28 /*   These functions initializes a BIQUAD filter defined as a cascade of   */
     29 /*   biquadratic Filter Sections.                                          */
     30 /*                                                                         */
     31 /* PARAMETERS:                                                             */
     32 /*   pInstance    - output, returns the pointer to the State Variable      */
     33 /*                   This state pointer must be passed to any subsequent   */
     34 /*                   call to "Biquad" functions.                           */
     35 /*   pTaps         - input, pointer to the taps memory                     */
     36 /*   pCoef         - input, pointer to the coefficient structure           */
     37 /*   N             - M coefficient factor of QM.N                          */
     38 /* RETURNS:                                                                */
     39 /*   void return code                                                      */
     40 /*-------------------------------------------------------------------------*/
     41 #ifdef BUILD_FLOAT
     42 void BQ_1I_D16F32Css_TRC_WRA_01_Init (   Biquad_FLOAT_Instance_t         *pInstance,
     43                                          Biquad_1I_Order2_FLOAT_Taps_t   *pTaps,
     44                                          BQ_FLOAT_Coefs_t            *pCoef)
     45 {
     46     LVM_FLOAT temp;
     47     PFilter_State_FLOAT pBiquadState = (PFilter_State_FLOAT) pInstance;
     48     pBiquadState->pDelays      = (LVM_FLOAT *)pTaps;
     49 
     50     temp = pCoef->A2;
     51     pBiquadState->coefs[0] = temp;
     52     temp = pCoef->A1;
     53     pBiquadState->coefs[1] = temp;
     54     temp = pCoef->A0;
     55     pBiquadState->coefs[2] = temp;
     56     temp = pCoef->B2;
     57     pBiquadState->coefs[3] = temp;
     58     temp = pCoef->B1;
     59     pBiquadState->coefs[4] = temp;
     60 }
     61 #else
     62 void BQ_1I_D16F32Css_TRC_WRA_01_Init (   Biquad_Instance_t         *pInstance,
     63                                          Biquad_1I_Order2_Taps_t   *pTaps,
     64                                          BQ_C16_Coefs_t            *pCoef)
     65 {
     66   LVM_INT16 temp;
     67   PFilter_State pBiquadState = (PFilter_State) pInstance;
     68   pBiquadState->pDelays      =(LVM_INT32 *) pTaps            ;
     69 
     70   temp=pCoef->A2;
     71   pBiquadState->coefs[0]=temp;
     72   temp=pCoef->A1;
     73   pBiquadState->coefs[1]=temp;
     74   temp=pCoef->A0;
     75   pBiquadState->coefs[2]=temp;
     76   temp=pCoef->B2;
     77   pBiquadState->coefs[3]=temp;
     78   temp=pCoef->B1;
     79   pBiquadState->coefs[4]=temp;
     80 }
     81 #endif
     82 /*-------------------------------------------------------------------------*/
     83 /* End Of File: BQ_1I_D16F32Css_TRC_WRA_01_Init                              */
     84 
     85