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 typedef struct
38 {
39         LVM_INT16   A0;
40         LVM_INT16   A1;
41         LVM_INT16   A2;
42         LVM_INT16   B1;
43         LVM_INT16   B2;
44         LVM_UINT16  Scale;
45 } BiquadA012B12CoefsSP_t;
46 
47 
48 /*
49  * Biquad with coefficients A0, A1 and B1 coefficients
50  */
51 /* Single precision (16-bit) Biquad section coefficients */
52 typedef struct
53 {
54         LVM_INT16   A0;
55         LVM_INT16   A1;
56         LVM_INT16   B1;
57         LVM_UINT16  Scale;
58 } BiquadA01B1CoefsSP_t;
59 
60 
61 #ifdef __cplusplus
62 }
63 #endif /* __cplusplus */
64 
65 #endif      /* FILTERS_H */
66 
67