Home | History | Annotate | Download | only in src 
      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 #ifdef __cplusplus
     22 extern "C" {
     23 #endif /* __cplusplus */
     24 
     25 #include "LVM_Types.h"
     26 
     27 /************************************************************************************/
     28 /*                                                                                  */
     29 /*    Structures                                                                    */
     30 /*                                                                                  */
     31 /************************************************************************************/
     32 
     33 /*
     34  * Biquad with coefficients A0, A1, A2, B1 and B2 coefficients
     35  */
     36 /* Single precision (16-bit) Biquad section coefficients */
     37 #ifndef BUILD_FLOAT
     38 typedef struct
     39 {
     40         LVM_INT16   A0;
     41         LVM_INT16   A1;
     42         LVM_INT16   A2;
     43         LVM_INT16   B1;
     44         LVM_INT16   B2;
     45         LVM_UINT16  Scale;
     46 } BiquadA012B12CoefsSP_t;
     47 #else
     48 typedef struct
     49 {
     50     LVM_FLOAT   A0;
     51     LVM_FLOAT   A1;
     52     LVM_FLOAT   A2;
     53     LVM_FLOAT   B1;
     54     LVM_FLOAT   B2;
     55     LVM_UINT16  Scale;
     56 } BiquadA012B12CoefsSP_t;
     57 #endif
     58 /*
     59  * Biquad with coefficients A0, A1 and B1 coefficients
     60  */
     61 /* Single precision (16-bit) Biquad section coefficients */
     62 #ifndef BUILD_FLOAT
     63 typedef struct
     64 {
     65         LVM_INT16   A0;
     66         LVM_INT16   A1;
     67         LVM_INT16   B1;
     68         LVM_UINT16  Scale;
     69 } BiquadA01B1CoefsSP_t;
     70 #else
     71 typedef struct
     72 {
     73     LVM_FLOAT   A0;
     74     LVM_FLOAT   A1;
     75     LVM_FLOAT   B1;
     76     LVM_UINT16  Scale;
     77 } BiquadA01B1CoefsSP_t;
     78 #endif
     79 #ifdef __cplusplus
     80 }
     81 #endif /* __cplusplus */
     82 
     83 #endif      /* FILTERS_H */
     84 
     85