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 __LVEQNB_PRIVATE_H__ 19 #define __LVEQNB_PRIVATE_H__ 20 21 #ifdef __cplusplus 22 extern "C" { 23 #endif /* __cplusplus */ 24 25 26 /****************************************************************************************/ 27 /* */ 28 /* Includes */ 29 /* */ 30 /****************************************************************************************/ 31 32 #include "LVEQNB.h" /* Calling or Application layer definitions */ 33 #include "BIQUAD.h" 34 #include "LVC_Mixer.h" 35 36 /****************************************************************************************/ 37 /* */ 38 /* Defines */ 39 /* */ 40 /****************************************************************************************/ 41 42 /* General */ 43 #define LVEQNB_INVALID 0xFFFF /* Invalid init parameter */ 44 45 /* Memory */ 46 #define LVEQNB_INSTANCE_ALIGN 4 /* 32-bit alignment for instance structures */ 47 #define LVEQNB_DATA_ALIGN 4 /* 32-bit alignment for structures */ 48 #define LVEQNB_COEF_ALIGN 4 /* 32-bit alignment for long words */ 49 #ifdef SUPPORT_MC 50 /* Number of buffers required for inplace processing */ 51 #define LVEQNB_SCRATCHBUFFERS (LVM_MAX_CHANNELS * 2) 52 #else 53 #define LVEQNB_SCRATCHBUFFERS 4 /* Number of buffers required for inplace processing */ 54 #endif 55 #define LVEQNB_SCRATCH_ALIGN 4 /* 32-bit alignment for long data */ 56 57 #define LVEQNB_BYPASS_MIXER_TC 100 /* Bypass Mixer TC */ 58 59 /****************************************************************************************/ 60 /* */ 61 /* Types */ 62 /* */ 63 /****************************************************************************************/ 64 65 /* Filter biquad types */ 66 typedef enum 67 { 68 #ifdef BUILD_FLOAT 69 LVEQNB_SinglePrecision_Float = -1, 70 #endif 71 LVEQNB_SinglePrecision = 0, 72 LVEQNB_DoublePrecision = 1, 73 LVEQNB_OutOfRange = 2, 74 LVEQNB_BIQUADTYPE_MAX = LVM_MAXINT_32 75 } LVEQNB_BiquadType_en; 76 77 78 /****************************************************************************************/ 79 /* */ 80 /* Structures */ 81 /* */ 82 /****************************************************************************************/ 83 84 85 86 /* Instance structure */ 87 typedef struct 88 { 89 /* Public parameters */ 90 LVEQNB_MemTab_t MemoryTable; /* Instance memory allocation table */ 91 LVEQNB_Params_t Params; /* Instance parameters */ 92 LVEQNB_Capabilities_t Capabilities; /* Instance capabilities */ 93 94 /* Aligned memory pointers */ 95 #ifdef BUILD_FLOAT 96 LVM_FLOAT *pFastTemporary; /* Fast temporary data base address */ 97 #else 98 LVM_INT16 *pFastTemporary; /* Fast temporary data base address */ 99 #endif 100 101 #ifdef BUILD_FLOAT 102 Biquad_2I_Order2_FLOAT_Taps_t *pEQNB_Taps_Float; /* Equaliser Taps */ 103 Biquad_FLOAT_Instance_t *pEQNB_FilterState_Float; /* State for each filter band */ 104 #else 105 /* Process variables */ 106 Biquad_2I_Order2_Taps_t *pEQNB_Taps; /* Equaliser Taps */ 107 Biquad_Instance_t *pEQNB_FilterState; /* State for each filter band */ 108 #endif 109 110 /* Filter definitions and call back */ 111 LVM_UINT16 NBands; /* Number of bands */ 112 LVEQNB_BandDef_t *pBandDefinitions; /* Filter band definitions */ 113 LVEQNB_BiquadType_en *pBiquadType; /* Filter biquad types */ 114 115 /* Bypass variable */ 116 #ifdef BUILD_FLOAT 117 LVMixer3_2St_FLOAT_st BypassMixer; 118 #else 119 LVMixer3_2St_st BypassMixer; /* Bypass mixer used in transitions */ 120 #endif 121 122 LVM_INT16 bInOperatingModeTransition; /* Operating mode transition flag */ 123 124 } LVEQNB_Instance_t; 125 126 127 /****************************************************************************************/ 128 /* */ 129 /* Function prototypes */ 130 /* */ 131 /****************************************************************************************/ 132 133 void LVEQNB_SetFilters(LVEQNB_Instance_t *pInstance, 134 LVEQNB_Params_t *pParams); 135 136 void LVEQNB_SetCoefficients(LVEQNB_Instance_t *pInstance); 137 138 void LVEQNB_ClearFilterHistory(LVEQNB_Instance_t *pInstance); 139 #ifdef BUILD_FLOAT 140 LVEQNB_ReturnStatus_en LVEQNB_SinglePrecCoefs(LVM_UINT16 Fs, 141 LVEQNB_BandDef_t *pFilterDefinition, 142 PK_FLOAT_Coefs_t *pCoefficients); 143 #else 144 LVEQNB_ReturnStatus_en LVEQNB_SinglePrecCoefs(LVM_UINT16 Fs, 145 LVEQNB_BandDef_t *pFilterDefinition, 146 PK_C16_Coefs_t *pCoefficients); 147 148 LVEQNB_ReturnStatus_en LVEQNB_DoublePrecCoefs(LVM_UINT16 Fs, 149 LVEQNB_BandDef_t *pFilterDefinition, 150 PK_C32_Coefs_t *pCoefficients); 151 #endif 152 153 LVM_INT32 LVEQNB_BypassMixerCallBack (void* hInstance, void *pGeneralPurpose, LVM_INT16 CallbackParam); 154 155 #ifdef __cplusplus 156 } 157 #endif /* __cplusplus */ 158 159 #endif /* __LVEQNB_PRIVATE_H__ */ 160 161