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 */ 81
