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 /************************************************************************************/
22 /*                                                                                  */
23 /*    Includes                                                                      */
24 /*                                                                                  */
25 /************************************************************************************/
26 
27 #include "LVC_Mixer.h"
28 
29 /************************************************************************************/
30 /*                                                                                  */
31 /*    Defines                                                                       */
32 /*                                                                                  */
33 /************************************************************************************/
34 
35 #define     HEADPHONEGAINPROC           LVCS_HEADPHONE_PROCGAIN
36 #define     HEADPHONEGAINUNPROC         LVCS_HEADPHONE_UNPROCGAIN
37 
38 /************************************************************************************/
39 /*                                                                                  */
40 /*    Structures                                                                    */
41 /*                                                                                  */
42 /************************************************************************************/
43 
44 /* Reverberation module structure */
45 typedef struct
46 {
47 
48     /* Stereo delay */
49     LVM_INT16                   DelaySize;
50     LVM_INT16                   DelayOffset;
51     LVM_INT16                   ProcGain;
52     LVM_INT16                   UnprocGain;
53     LVM_FLOAT                   StereoSamples[2 * LVCS_STEREODELAY_CS_MAX_VAL];
54     /* Reverb Level */
55     LVM_FLOAT                   ReverbLevel;
56     /* Filter */
57     void                        (*pBiquadCallBack) (Biquad_FLOAT_Instance_t*,
58                                                     LVM_FLOAT*, LVM_FLOAT*, LVM_INT16);
59 } LVCS_ReverbGenerator_t;
60 
61 /************************************************************************************/
62 /*                                                                                    */
63 /*    Function prototypes                                                                */
64 /*                                                                                    */
65 /************************************************************************************/
66 
67 LVCS_ReturnStatus_en LVCS_ReverbGeneratorInit(LVCS_Handle_t     hInstance,
68                                                  LVCS_Params_t  *pParams);
69 LVCS_ReturnStatus_en LVCS_ReverbGenerator(LVCS_Handle_t         hInstance,
70                                           const LVM_FLOAT       *pInput,
71                                           LVM_FLOAT             *pOutput,
72                                           LVM_UINT16            NumSamples);
73 
74 #endif  /* REVERB_H */
75