frameworks/base/media/libeffects/lvm/lib/StereoWidening/src/LVCS_StereoEnhancer.h

   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
  22 extern "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 */
  44 typedef 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
  67 LVCS_ReturnStatus_en LVCS_SEnhancerInit(LVCS_Handle_t        hInstance,
  68                                         LVCS_Params_t        *pParams);
  69
  70 LVCS_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 */