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