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 __LVC_MIXER_H__ 19 #define __LVC_MIXER_H__ 20 21 22 #ifdef __cplusplus 23 extern "C" { 24 #endif /* __cplusplus */ 25 26 27 #include "LVM_Types.h" 28 29 /********************************************************************************** 30 INSTANCE MEMORY TYPE DEFINITION 31 ***********************************************************************************/ 32 33 /* LVMixer3_st structure stores Instance parameters for one audio stream */ 34 #ifdef BUILD_FLOAT 35 typedef struct 36 { 37 LVM_FLOAT PrivateParams[3]; /* Private Instance params for \ 38 Audio Stream shift parameter */ 39 LVM_INT16 CallbackSet; /* Boolean. Should be set by calling application \ 40 each time the target value is updated */ 41 LVM_INT16 CallbackParam; /* Parameter that will be used in the calback function */ 42 void *pCallbackHandle; /* Pointer to the instance of the callback function */ 43 void *pGeneralPurpose; /* Pointer for general purpose usage */ 44 LVM_Callback pCallBack; /* Pointer to the callback function */ 45 } LVMixer3_FLOAT_st; 46 #else 47 typedef struct 48 { 49 LVM_INT32 PrivateParams[4]; /* Private Instance params for Audio Stream */ 50 LVM_INT16 CallbackSet; /* Boolean. Should be set by calling application each time the target value is updated */ 51 LVM_INT16 CallbackParam; /* Parameter that will be used in the calback function */ 52 void *pCallbackHandle; /* Pointer to the instance of the callback function */ 53 void *pGeneralPurpose; /* Pointer for general purpose usage */ 54 LVM_Callback pCallBack; /* Pointer to the callback function */ 55 } LVMixer3_st; 56 #endif 57 #ifdef BUILD_FLOAT 58 typedef struct 59 { 60 LVMixer3_FLOAT_st MixerStream[1]; /* Instance Params for one Audio Stream */ 61 } LVMixer3_1St_FLOAT_st; 62 #else 63 typedef struct 64 { 65 LVMixer3_st MixerStream[1]; /* Instance Params for one Audio Stream */ 66 } LVMixer3_1St_st; 67 #endif 68 #ifdef BUILD_FLOAT 69 typedef struct 70 { 71 LVMixer3_FLOAT_st MixerStream[2]; /* Instance Params for two Audio Streams */ 72 } LVMixer3_2St_FLOAT_st; 73 #else 74 typedef struct 75 { 76 LVMixer3_st MixerStream[2]; /* Instance Params for two Audio Streams */ 77 } LVMixer3_2St_st; 78 #endif 79 #ifndef BUILD_FLOAT 80 typedef struct 81 { 82 LVMixer3_st MixerStream[3]; /* Instance Params for three Audio Streams */ 83 } LVMixer3_3St_st; 84 #endif 85 /********************************************************************************** 86 FUNCTION PROTOTYPES (HIGH LEVEL FUNCTIONS) 87 ***********************************************************************************/ 88 89 /* Function names should be unique within first 16 characters */ 90 #define LVMixer3_MixSoft_1St_D16C31_SAT LVMixer3_1St_D16C31_SAT_MixSoft 91 #define LVMixer3_MixInSoft_D16C31_SAT LVMixer3_D16C31_SAT_MixInSoft 92 #define LVMixer3_MixSoft_2St_D16C31_SAT LVMixer3_2St_D16C31_SAT_MixSoft 93 #define LVMixer3_MixSoft_3St_D16C31_SAT LVMixer3_3St_D16C31_SAT_MixSoft 94 95 96 /*** General functions ************************************************************/ 97 98 /**********************************************************************************/ 99 /* This time constant calculation function assumes the mixer will be called with */ 100 /* large block sizes. When the block size is small, especially if less than 4, */ 101 /* then the calculation will give an incorrect value for alpha, see the mixer */ 102 /* documentation for further details. */ 103 /* ********************************************************************************/ 104 #ifdef BUILD_FLOAT 105 void LVC_Mixer_SetTarget( LVMixer3_FLOAT_st *pStream, 106 LVM_FLOAT TargetGain); 107 #else 108 void LVC_Mixer_SetTarget( LVMixer3_st *pStream, 109 LVM_INT32 TargetGain); 110 #endif 111 #ifdef BUILD_FLOAT 112 LVM_FLOAT LVC_Mixer_GetTarget( LVMixer3_FLOAT_st *pStream); 113 #else 114 LVM_INT32 LVC_Mixer_GetTarget( LVMixer3_st *pStream); 115 #endif 116 117 #ifdef BUILD_FLOAT 118 LVM_FLOAT LVC_Mixer_GetCurrent( LVMixer3_FLOAT_st *pStream); 119 #else 120 LVM_INT32 LVC_Mixer_GetCurrent( LVMixer3_st *pStream); 121 #endif 122 123 #ifdef BUILD_FLOAT 124 void LVC_Mixer_Init( LVMixer3_FLOAT_st *pStream, 125 LVM_FLOAT TargetGain, 126 LVM_FLOAT CurrentGain); 127 #else 128 void LVC_Mixer_Init( LVMixer3_st *pStream, 129 LVM_INT32 TargetGain, 130 LVM_INT32 CurrentGain); 131 #endif 132 133 #ifdef BUILD_FLOAT 134 void LVC_Mixer_SetTimeConstant( LVMixer3_FLOAT_st *pStream, 135 LVM_INT32 Tc_millisec, 136 LVM_Fs_en Fs, 137 LVM_INT16 NumChannels); 138 #else 139 void LVC_Mixer_SetTimeConstant( LVMixer3_st *pStream, 140 LVM_INT32 Tc_millisec, 141 LVM_Fs_en Fs, 142 LVM_INT16 NumChannels); 143 #endif 144 145 #ifdef BUILD_FLOAT 146 void LVC_Mixer_VarSlope_SetTimeConstant( LVMixer3_FLOAT_st *pStream, 147 LVM_INT32 Tc_millisec, 148 LVM_Fs_en Fs, 149 LVM_INT16 NumChannels); 150 #else 151 void LVC_Mixer_VarSlope_SetTimeConstant( LVMixer3_st *pStream, 152 LVM_INT32 Tc_millisec, 153 LVM_Fs_en Fs, 154 LVM_INT16 NumChannels); 155 #endif 156 157 /*** 16 bit functions *************************************************************/ 158 159 #ifdef BUILD_FLOAT 160 void LVC_MixSoft_1St_D16C31_SAT( LVMixer3_1St_FLOAT_st *pInstance, 161 const LVM_FLOAT *src, 162 LVM_FLOAT *dst, 163 LVM_INT16 n); 164 #else 165 void LVC_MixSoft_1St_D16C31_SAT( LVMixer3_1St_st *pInstance, 166 const LVM_INT16 *src, 167 LVM_INT16 *dst, 168 LVM_INT16 n); 169 #endif 170 171 #ifdef BUILD_FLOAT 172 void LVC_MixInSoft_D16C31_SAT( LVMixer3_1St_FLOAT_st *pInstance, 173 LVM_FLOAT *src, 174 LVM_FLOAT *dst, 175 LVM_INT16 n); 176 #else 177 void LVC_MixInSoft_D16C31_SAT( LVMixer3_1St_st *pInstance, 178 LVM_INT16 *src, 179 LVM_INT16 *dst, 180 LVM_INT16 n); 181 #endif 182 183 #ifdef BUILD_FLOAT 184 void LVC_MixSoft_2St_D16C31_SAT( LVMixer3_2St_FLOAT_st *pInstance, 185 const LVM_FLOAT *src1, 186 LVM_FLOAT *src2, 187 LVM_FLOAT *dst, /* dst cannot be equal to src2 */ 188 LVM_INT16 n); 189 #else 190 void LVC_MixSoft_2St_D16C31_SAT( LVMixer3_2St_st *pInstance, 191 const LVM_INT16 *src1, 192 LVM_INT16 *src2, 193 LVM_INT16 *dst, /* dst cannot be equal to src2 */ 194 LVM_INT16 n); 195 #endif 196 /**********************************************************************************/ 197 /* For applying different gains to Left and right chennals */ 198 /* MixerStream[0] applies to Left channel */ 199 /* MixerStream[1] applies to Right channel */ 200 /* Gain values should not be more that 1.0 */ 201 /**********************************************************************************/ 202 #ifdef BUILD_FLOAT 203 void LVC_MixSoft_1St_2i_D16C31_SAT( LVMixer3_2St_FLOAT_st *pInstance, 204 const LVM_FLOAT *src, 205 LVM_FLOAT *dst, /* dst can be equal to src */ 206 LVM_INT16 n); /* Number of stereo samples */ 207 #else 208 void LVC_MixSoft_1St_2i_D16C31_SAT( LVMixer3_2St_st *pInstance, 209 const LVM_INT16 *src, 210 LVM_INT16 *dst, /* dst can be equal to src */ 211 LVM_INT16 n); /* Number of stereo samples */ 212 #endif 213 #ifdef __cplusplus 214 } 215 #endif /* __cplusplus */ 216 217 /**********************************************************************************/ 218 219 #endif //#ifndef __LVC_MIXER_H__ 220 221
