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 #ifndef FILTERS_H 19 #define FILTERS_H 20 21 #include "LVM_Types.h" 22 23 /************************************************************************************/ 24 /* */ 25 /* Structures */ 26 /* */ 27 /************************************************************************************/ 28 29 /* 30 * Biquad with coefficients A0, A1, A2, B1 and B2 coefficients 31 */ 32 /* Single precision (16-bit) Biquad section coefficients */ 33 typedef struct { 34 LVM_FLOAT A0; 35 LVM_FLOAT A1; 36 LVM_FLOAT A2; 37 LVM_FLOAT B1; 38 LVM_FLOAT B2; 39 LVM_UINT16 Scale; 40 } BiquadA012B12CoefsSP_t; 41 /* 42 * Biquad with coefficients A0, A1 and B1 coefficients 43 */ 44 /* Single precision (16-bit) Biquad section coefficients */ 45 typedef struct { 46 LVM_FLOAT A0; 47 LVM_FLOAT A1; 48 LVM_FLOAT B1; 49 LVM_UINT16 Scale; 50 } BiquadA01B1CoefsSP_t; 51 52 #endif /* FILTERS_H */ 53