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 "FO_2I_D16F32Css_LShx_TRC_WRA_01_Private.h" 21 22/*-------------------------------------------------------------------------*/ 23/* FUNCTION: */ 24/* FO_2I_D16F32Css_LShx_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/*-------------------------------------------------------------------------*/ 40void FO_2I_D16F32Css_LShx_TRC_WRA_01_Init(Biquad_Instance_t *pInstance, 41 Biquad_2I_Order1_Taps_t *pTaps, 42 FO_C16_LShx_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->A1; 49 pBiquadState->coefs[0]=temp; 50 temp=pCoef->A0; 51 pBiquadState->coefs[1]=temp; 52 temp=pCoef->B1; 53 pBiquadState->coefs[2]=temp; 54 55 temp=pCoef->Shift; 56 pBiquadState->Shift = temp; 57} 58/*-------------------------------------------------------------------------*/ 59/* End Of File: FO_2I_D16F32Css_LShx_TRC_WRA_01_Init.c */ 60 61