| /* |
| * Copyright (C) 2004-2010 NXP Software |
| * Copyright (C) 2010 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "BIQUAD.h" |
| #include "PK_2I_D32F32CllGss_TRC_WRA_01_Private.h" |
| #include "LVM_Macros.h" |
| |
| /************************************************************************** |
| ASSUMPTIONS: |
| COEFS- |
| pBiquadState->coefs[0] is A0, |
| pBiquadState->coefs[1] is -B2, |
| pBiquadState->coefs[2] is -B1, these are in Q30 format |
| pBiquadState->coefs[3] is Gain, in Q11 format |
| |
| DELAYS- |
| pBiquadState->pDelays[0] is x(n-1)L in Q0 format |
| pBiquadState->pDelays[1] is x(n-1)R in Q0 format |
| pBiquadState->pDelays[2] is x(n-2)L in Q0 format |
| pBiquadState->pDelays[3] is x(n-2)R in Q0 format |
| pBiquadState->pDelays[4] is y(n-1)L in Q0 format |
| pBiquadState->pDelays[5] is y(n-1)R in Q0 format |
| pBiquadState->pDelays[6] is y(n-2)L in Q0 format |
| pBiquadState->pDelays[7] is y(n-2)R in Q0 format |
| ***************************************************************************/ |
