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_STEREOENHANCER_H__
19#define __LVCS_STEREOENHANCER_H__
20
21#ifdef __cplusplus
22extern "C" {
23#endif /* __cplusplus */
24
25
26/************************************************************************************/
27/*                                                                                  */
28/*    Includes                                                                      */
29/*                                                                                  */
30/************************************************************************************/
31
32#include "Filters.h"                        /* Filter definitions */
33#include "LVCS_Headphone_Coeffs.h"          /* Headphone coefficients */
34#include "BIQUAD.h"
35
36
37/************************************************************************************/
38/*                                                                                  */
39/*    Structures                                                                    */
40/*                                                                                  */
41/************************************************************************************/
42
43/* Stereo enhancer structure */
44typedef struct
45{
46    /*
47     * Middle filter
48     */
49    void                    (*pBiquadCallBack_Mid)(Biquad_Instance_t*, LVM_INT16*, LVM_INT16*, LVM_INT16);
50
51    /*
52     * Side filter
53     */
54    void                    (*pBiquadCallBack_Side)(Biquad_Instance_t*, LVM_INT16*, LVM_INT16*, LVM_INT16);
55
56      LVM_UINT16              MidGain;            /* Middle gain in mobile speaker mode */
57
58} LVCS_StereoEnhancer_t;
59
60
61/************************************************************************************/
62/*                                                                                  */
63/*    Function prototypes                                                           */
64/*                                                                                  */
65/************************************************************************************/
66
67LVCS_ReturnStatus_en LVCS_SEnhancerInit(LVCS_Handle_t        hInstance,
68                                        LVCS_Params_t        *pParams);
69
70LVCS_ReturnStatus_en LVCS_StereoEnhancer(LVCS_Handle_t        hInstance,
71                                         const LVM_INT16    *pInData,
72                                         LVM_INT16            *pOutData,
73                                         LVM_UINT16            NumSamples);
74
75
76#ifdef __cplusplus
77}
78#endif /* __cplusplus */
79
80#endif  /* STEREOENHANCE_H */
81