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#ifndef BUILD_FLOAT 48 /* 49 * Middle filter 50 */ 51 void (*pBiquadCallBack_Mid)(Biquad_Instance_t*, LVM_INT16*, LVM_INT16*, LVM_INT16); 52 /* 53 * Side filter 54 */ 55 void (*pBiquadCallBack_Side)(Biquad_Instance_t*, LVM_INT16*, LVM_INT16*, LVM_INT16); 56 LVM_UINT16 MidGain; /* Middle gain in mobile speaker mode */ 57#else 58 /* 59 * Middle filter 60 */ 61 void (*pBiquadCallBack_Mid)(Biquad_FLOAT_Instance_t*, 62 LVM_FLOAT*, LVM_FLOAT*, LVM_INT16); 63 64 /* 65 * Side filter 66 */ 67 void (*pBiquadCallBack_Side)(Biquad_FLOAT_Instance_t*, 68 LVM_FLOAT*, LVM_FLOAT*, LVM_INT16); 69 LVM_FLOAT MidGain; /* Middle gain in mobile speaker mode */ 70#endif 71} LVCS_StereoEnhancer_t; 72 73 74/************************************************************************************/ 75/* */ 76/* Function prototypes */ 77/* */ 78/************************************************************************************/ 79 80LVCS_ReturnStatus_en LVCS_SEnhancerInit(LVCS_Handle_t hInstance, 81 LVCS_Params_t *pParams); 82 83#ifndef BUILD_FLOAT 84LVCS_ReturnStatus_en LVCS_StereoEnhancer(LVCS_Handle_t hInstance, 85 const LVM_INT16 *pInData, 86 LVM_INT16 *pOutData, 87 LVM_UINT16 NumSamples); 88#else 89LVCS_ReturnStatus_en LVCS_StereoEnhancer(LVCS_Handle_t hInstance, 90 const LVM_FLOAT *pInData, 91 LVM_FLOAT *pOutData, 92 LVM_UINT16 NumSamples); 93#endif 94#ifdef __cplusplus 95} 96#endif /* __cplusplus */ 97 98#endif /* STEREOENHANCE_H */ 99