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 "BP_1I_D16F16Css_TRC_WRA_01_Private.h" 212c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent 222c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent 232c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/*-------------------------------------------------------------------------*/ 242c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/* FUNCTION: */ 252c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/* BP_1I_D16F16Css_TRC_WRA_01_Init */ 262c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/* */ 272c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/* DESCRIPTION: */ 282c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/* These functions initializes a BIQUAD filter defined as a cascade of */ 292c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/* biquadratic Filter Sections. */ 302c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/* */ 312c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/* PARAMETERS: */ 322c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/* pInstance - output, returns the pointer to the State Variable */ 332c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/* This state pointer must be passed to any subsequent */ 342c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/* call to "Biquad" functions. */ 352c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/* pTaps - input, pointer to the taps memory */ 362c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/* pCoef - input, pointer to the coefficient structure */ 372c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/* N - M coefficient factor of QM.N */ 382c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/* RETURNS: */ 392c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/* void return code */ 402c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/*-------------------------------------------------------------------------*/ 41d7d013446a64c6de9f0f2dfe098a721b140e0b48Ramesh Katuri#ifdef BUILD_FLOAT 42d7d013446a64c6de9f0f2dfe098a721b140e0b48Ramesh Katurivoid BP_1I_D16F16Css_TRC_WRA_01_Init ( Biquad_FLOAT_Instance_t *pInstance, 43d7d013446a64c6de9f0f2dfe098a721b140e0b48Ramesh Katuri Biquad_1I_Order2_FLOAT_Taps_t *pTaps, 44d7d013446a64c6de9f0f2dfe098a721b140e0b48Ramesh Katuri BP_FLOAT_Coefs_t *pCoef) 45d7d013446a64c6de9f0f2dfe098a721b140e0b48Ramesh Katuri{ 46d7d013446a64c6de9f0f2dfe098a721b140e0b48Ramesh Katuri PFilter_State_FLOAT pBiquadState = (PFilter_State_FLOAT) pInstance; 47d7d013446a64c6de9f0f2dfe098a721b140e0b48Ramesh Katuri pBiquadState->pDelays = (LVM_FLOAT *) pTaps; 48d7d013446a64c6de9f0f2dfe098a721b140e0b48Ramesh Katuri 49d7d013446a64c6de9f0f2dfe098a721b140e0b48Ramesh Katuri pBiquadState->coefs[0] = pCoef->A0; 50d7d013446a64c6de9f0f2dfe098a721b140e0b48Ramesh Katuri pBiquadState->coefs[1] = pCoef->B2; 51d7d013446a64c6de9f0f2dfe098a721b140e0b48Ramesh Katuri pBiquadState->coefs[2] = pCoef->B1; 52d7d013446a64c6de9f0f2dfe098a721b140e0b48Ramesh Katuri} 53d7d013446a64c6de9f0f2dfe098a721b140e0b48Ramesh Katuri#else 542c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurentvoid BP_1I_D16F16Css_TRC_WRA_01_Init ( Biquad_Instance_t *pInstance, 552c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent Biquad_1I_Order2_Taps_t *pTaps, 562c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent BP_C16_Coefs_t *pCoef) 572c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent{ 582c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent PFilter_State pBiquadState = (PFilter_State) pInstance; 592c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent pBiquadState->pDelays =(LVM_INT32 *) pTaps; 602c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent 612c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent pBiquadState->coefs[0]=pCoef->A0; 622c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent pBiquadState->coefs[1]=pCoef->B2; 632c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent pBiquadState->coefs[2]=pCoef->B1; 642c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent } 65d7d013446a64c6de9f0f2dfe098a721b140e0b48Ramesh Katuri#endif 662c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/*-------------------------------------------------------------------------*/ 672c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent/* End Of File: BP_1I_D16F16Css_TRC_WRA_01_Init.c */ 682c8e5cab3faa6d360e222b7a6c40a80083d021acEric Laurent 69