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 __LVCS_REVERBGENERATOR_H__
19 #define __LVCS_REVERBGENERATOR_H__
20 
21 #ifdef __cplusplus
22 extern "C" {
23 #endif /* __cplusplus */
24 
25 
26 /************************************************************************************/
27 /*                                                                                  */
28 /*    Includes                                                                      */
29 /*                                                                                  */
30 /************************************************************************************/
31 
32 #include "LVC_Mixer.h"
33 
34 
35 /************************************************************************************/
36 /*                                                                                  */
37 /*    Defines                                                                       */
38 /*                                                                                  */
39 /************************************************************************************/
40 
41 #define     HEADPHONEGAINPROC           LVCS_HEADPHONE_PROCGAIN
42 #define     HEADPHONEGAINUNPROC         LVCS_HEADPHONE_UNPROCGAIN
43 
44 
45 /************************************************************************************/
46 /*                                                                                  */
47 /*    Structures                                                                    */
48 /*                                                                                  */
49 /************************************************************************************/
50 
51 
52 /* Reverberation module structure */
53 typedef struct
54 {
55 
56     /* Stereo delay */
57     LVM_INT16                   DelaySize;
58     LVM_INT16                   DelayOffset;
59     LVM_INT16                   ProcGain;
60     LVM_INT16                   UnprocGain;
61     LVM_INT16                    StereoSamples[2*LVCS_STEREODELAY_CS_48KHZ];
62 
63     /* Reverb Level */
64     LVM_INT16                   ReverbLevel;
65 
66     /* Filter */
67     void                        (*pBiquadCallBack) (Biquad_Instance_t*, LVM_INT16*, LVM_INT16*, LVM_INT16);
68 
69 } LVCS_ReverbGenerator_t;
70 
71 
72 /************************************************************************************/
73 /*                                                                                    */
74 /*    Function prototypes                                                                */
75 /*                                                                                    */
76 /************************************************************************************/
77 
78 LVCS_ReturnStatus_en LVCS_ReverbGeneratorInit(LVCS_Handle_t     hInstance,
79                                                  LVCS_Params_t  *pParams);
80 
81 LVCS_ReturnStatus_en LVCS_ReverbGenerator(LVCS_Handle_t         hInstance,
82                                           const LVM_INT16       *pInput,
83                                           LVM_INT16             *pOutput,
84                                           LVM_UINT16            NumSamples);
85 
86 #ifdef __cplusplus
87 }
88 #endif /* __cplusplus */
89 
90 #endif  /* REVERB_H */
91