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 /********************************************************************************** 19 INCLUDE FILES 20 ***********************************************************************************/ 21 22 #include "LVC_Mixer_Private.h" 23 #include "VectorArithmetic.h" 24 #include "ScalarArithmetic.h" 25 26 /********************************************************************************** 27 DEFINITIONS 28 ***********************************************************************************/ 29 30 #define TRUE 1 31 #define FALSE 0 32 33 /********************************************************************************** 34 FUNCTION LVC_MixSoft_1St_2i_D16C31_SAT 35 ***********************************************************************************/ 36 37 void LVC_MixSoft_1St_2i_D16C31_SAT( LVMixer3_2St_st *ptrInstance, 38 const LVM_INT16 *src, 39 LVM_INT16 *dst, 40 LVM_INT16 n) 41 { 42 char HardMixing = TRUE; 43 LVM_INT32 TargetGain; 44 Mix_Private_st *pInstance1=(Mix_Private_st *)(ptrInstance->MixerStream[0].PrivateParams); 45 Mix_Private_st *pInstance2=(Mix_Private_st *)(ptrInstance->MixerStream[1].PrivateParams); 46 47 if(n<=0) return; 48 49 /****************************************************************************** 50 SOFT MIXING 51 *******************************************************************************/ 52 if ((pInstance1->Current != pInstance1->Target)||(pInstance2->Current != pInstance2->Target)) 53 { 54 if(pInstance1->Delta == 0x7FFFFFFF) 55 { 56 pInstance1->Current = pInstance1->Target; 57 TargetGain=pInstance1->Target>>16; // TargetGain in Q16.15 format, no integer part 58 LVC_Mixer_SetTarget(&(ptrInstance->MixerStream[0]),TargetGain); 59 } 60 else if (Abs_32(pInstance1->Current-pInstance1->Target) < pInstance1->Delta) 61 { 62 pInstance1->Current = pInstance1->Target; /* Difference is not significant anymore. Make them equal. */ 63 TargetGain=pInstance1->Target>>16; // TargetGain in Q16.15 format, no integer part 64 LVC_Mixer_SetTarget(&(ptrInstance->MixerStream[0]),TargetGain); 65 } 66 else 67 { 68 /* Soft mixing has to be applied */ 69 HardMixing = FALSE; 70 } 71 72 if(HardMixing == TRUE) 73 { 74 if(pInstance2->Delta == 0x7FFFFFFF) 75 { 76 pInstance2->Current = pInstance2->Target; 77 TargetGain=pInstance2->Target>>16; // TargetGain in Q16.15 format, no integer part 78 LVC_Mixer_SetTarget(&(ptrInstance->MixerStream[1]),TargetGain); 79 } 80 else if (Abs_32(pInstance2->Current-pInstance2->Target) < pInstance2->Delta) 81 { 82 pInstance2->Current = pInstance2->Target; /* Difference is not significant anymore. Make them equal. */ 83 TargetGain=pInstance2->Target>>16; // TargetGain in Q16.15 format, no integer part 84 LVC_Mixer_SetTarget(&(ptrInstance->MixerStream[1]),TargetGain); 85 } 86 else 87 { 88 /* Soft mixing has to be applied */ 89 HardMixing = FALSE; 90 } 91 } 92 93 if(HardMixing == FALSE) 94 { 95 LVC_Core_MixSoft_1St_2i_D16C31_WRA( &(ptrInstance->MixerStream[0]),&(ptrInstance->MixerStream[1]), src, dst, n); 96 } 97 } 98 99 /****************************************************************************** 100 HARD MIXING 101 *******************************************************************************/ 102 103 if (HardMixing) 104 { 105 if (((pInstance1->Target>>16) == 0x7FFF)&&((pInstance2->Target>>16) == 0x7FFF)) 106 { 107 if(src!=dst) 108 { 109 Copy_16(src, dst, n); 110 } 111 } 112 else 113 { 114 LVC_Core_MixHard_1St_2i_D16C31_SAT(&(ptrInstance->MixerStream[0]),&(ptrInstance->MixerStream[1]), src, dst, n); 115 } 116 } 117 118 /****************************************************************************** 119 CALL BACK 120 *******************************************************************************/ 121 122 if (ptrInstance->MixerStream[0].CallbackSet) 123 { 124 if (Abs_32(pInstance1->Current-pInstance1->Target) < pInstance1->Delta) 125 { 126 pInstance1->Current = pInstance1->Target; /* Difference is not significant anymore. Make them equal. */ 127 TargetGain=pInstance1->Target>>(16-pInstance1->Shift); // TargetGain in Q16.15 format 128 LVC_Mixer_SetTarget(&ptrInstance->MixerStream[0],TargetGain); 129 ptrInstance->MixerStream[0].CallbackSet = FALSE; 130 if (ptrInstance->MixerStream[0].pCallBack != 0) 131 { 132 (*ptrInstance->MixerStream[0].pCallBack) ( ptrInstance->MixerStream[0].pCallbackHandle, ptrInstance->MixerStream[0].pGeneralPurpose,ptrInstance->MixerStream[0].CallbackParam ); 133 } 134 } 135 } 136 if (ptrInstance->MixerStream[1].CallbackSet) 137 { 138 if (Abs_32(pInstance2->Current-pInstance2->Target) < pInstance2->Delta) 139 { 140 pInstance2->Current = pInstance2->Target; /* Difference is not significant anymore. Make them equal. */ 141 TargetGain=pInstance2->Target>>(16-pInstance2->Shift); // TargetGain in Q16.15 format 142 LVC_Mixer_SetTarget(&ptrInstance->MixerStream[1],TargetGain); 143 ptrInstance->MixerStream[1].CallbackSet = FALSE; 144 if (ptrInstance->MixerStream[1].pCallBack != 0) 145 { 146 (*ptrInstance->MixerStream[1].pCallBack) ( ptrInstance->MixerStream[1].pCallbackHandle, ptrInstance->MixerStream[1].pGeneralPurpose,ptrInstance->MixerStream[1].CallbackParam ); 147 } 148 } 149 } 150 } 151 152 /**********************************************************************************/ 153
