12c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/* 22c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent * Copyright (C) 2004-2010 NXP Software 32c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent * Copyright (C) 2010 The Android Open Source Project 42c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent * 52c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent * Licensed under the Apache License, Version 2.0 (the "License"); 62c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent * you may not use this file except in compliance with the License. 72c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent * You may obtain a copy of the License at 82c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent * 92c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent * http://www.apache.org/licenses/LICENSE-2.0 102c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent * 112c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent * Unless required by applicable law or agreed to in writing, software 122c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent * distributed under the License is distributed on an "AS IS" BASIS, 132c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 142c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent * See the License for the specific language governing permissions and 152c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent * limitations under the License. 162c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent */ 172c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent 182c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/*-------------------------------------------------------------------------*/ 192c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent#include "BIQUAD.h" 202c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent#include "FO_2I_D16F32Css_LShx_TRC_WRA_01_Private.h" 212c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent 222c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/*-------------------------------------------------------------------------*/ 232c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/* FUNCTION: */ 242c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/* FO_2I_D16F32Css_LShx_TRC_WRA_01_Init */ 252c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/* */ 262c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/* DESCRIPTION: */ 272c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/* These functions initializes a BIQUAD filter defined as a cascade of */ 282c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/* biquadratic Filter Sections. */ 292c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/* */ 302c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/* PARAMETERS: */ 312c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/* pInstance - output, returns the pointer to the State Variable */ 322c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/* This state pointer must be passed to any subsequent */ 332c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/* call to "Biquad" functions. */ 342c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/* pTaps - input, pointer to the taps memory */ 352c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/* pCoef - input, pointer to the coefficient structure */ 362c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/* N - M coefficient factor of QM.N */ 372c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/* RETURNS: */ 382c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/* void return code */ 392c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/*-------------------------------------------------------------------------*/ 402c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurentvoid FO_2I_D16F32Css_LShx_TRC_WRA_01_Init(Biquad_Instance_t *pInstance, 412c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent Biquad_2I_Order1_Taps_t *pTaps, 422c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent FO_C16_LShx_Coefs_t *pCoef) 432c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent{ 442c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent LVM_INT16 temp; 452c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent PFilter_State pBiquadState = (PFilter_State) pInstance; 462c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent pBiquadState->pDelays =(LVM_INT32 *) pTaps ; 472c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent 482c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent temp=pCoef->A1; 492c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent pBiquadState->coefs[0]=temp; 502c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent temp=pCoef->A0; 512c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent pBiquadState->coefs[1]=temp; 522c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent temp=pCoef->B1; 532c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent pBiquadState->coefs[2]=temp; 542c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent 552c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent temp=pCoef->Shift; 562c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent pBiquadState->Shift = temp; 572c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent} 582c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/*-------------------------------------------------------------------------*/ 592c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/* End Of File: FO_2I_D16F32Css_LShx_TRC_WRA_01_Init.c */ 602c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent 61