frameworks/base/media/libeffects/lvm/lib/StereoWidening/src/LVCS_ReverbGenerator.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_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 */