| /* |
| * Copyright (C) 2004-2010 NXP Software |
| * Copyright (C) 2010 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| /********************************************************************************** |
| INCLUDE FILES |
| ***********************************************************************************/ |
| |
| #include "LVC_Mixer_Private.h" |
| #include "VectorArithmetic.h" |
| #include "ScalarArithmetic.h" |
| |
| /********************************************************************************** |
| DEFINITIONS |
| ***********************************************************************************/ |
| |
| #define TRUE 1 |
| #define FALSE 0 |
| |
| /********************************************************************************** |
| FUNCTION LVMixer3_MIXSOFT_1ST_D16C31_SAT |
| ***********************************************************************************/ |
| |
| void LVC_MixSoft_1St_D16C31_SAT( LVMixer3_1St_st *ptrInstance, |
| const LVM_INT16 *src, |
| LVM_INT16 *dst, |
| LVM_INT16 n) |
| { |
| char HardMixing = TRUE; |
| LVM_INT32 TargetGain; |
| Mix_Private_st *pInstance=(Mix_Private_st *)(ptrInstance->MixerStream[0].PrivateParams); |
| |
| if(n<=0) return; |
| |
| /****************************************************************************** |
| SOFT MIXING |
| *******************************************************************************/ |
| if (pInstance->Current != pInstance->Target) |
| { |
| if(pInstance->Delta == 0x7FFFFFFF){ |
| pInstance->Current = pInstance->Target; |
| TargetGain=pInstance->Target>>(16-pInstance->Shift); // TargetGain in Q16.15 format |
| LVC_Mixer_SetTarget(&(ptrInstance->MixerStream[0]),TargetGain); |
| }else if (Abs_32(pInstance->Current-pInstance->Target) < pInstance->Delta){ |
| pInstance->Current = pInstance->Target; /* Difference is not significant anymore. Make them equal. */ |
| TargetGain=pInstance->Target>>(16-pInstance->Shift); // TargetGain in Q16.15 format |
| LVC_Mixer_SetTarget(&(ptrInstance->MixerStream[0]),TargetGain); |
| }else{ |
| /* Soft mixing has to be applied */ |
| HardMixing = FALSE; |
| if(pInstance->Shift!=0){ |
| Shift_Sat_v16xv16 ((LVM_INT16)pInstance->Shift,src,dst,n); |
| LVC_Core_MixSoft_1St_D16C31_WRA( &(ptrInstance->MixerStream[0]), dst, dst, n); |
| } |
| else |
| LVC_Core_MixSoft_1St_D16C31_WRA( &(ptrInstance->MixerStream[0]), src, dst, n); |
| } |
| } |
| |
| /****************************************************************************** |
| HARD MIXING |
| *******************************************************************************/ |
| |
| if (HardMixing){ |
| if (pInstance->Target == 0) |
| LoadConst_16(0, dst, n); |
| else if(pInstance->Shift!=0){ |
| Shift_Sat_v16xv16 ((LVM_INT16)pInstance->Shift,src,dst,n); |
| if ((pInstance->Target>>16) != 0x7FFF) |
| Mult3s_16x16( dst, (LVM_INT16)(pInstance->Target>>16), dst, n ); |
| } |
| else { |
| if ((pInstance->Target>>16) != 0x7FFF) |
| Mult3s_16x16( src, (LVM_INT16)(pInstance->Target>>16), dst, n ); |
| else if(src!=dst) |
| Copy_16(src, dst, n); |
| } |
| |
| } |
| |
| /****************************************************************************** |
| CALL BACK |
| *******************************************************************************/ |
| |
| if (ptrInstance->MixerStream[0].CallbackSet){ |
| if (Abs_32(pInstance->Current-pInstance->Target) < pInstance->Delta){ |
| pInstance->Current = pInstance->Target; /* Difference is not significant anymore. Make them equal. */ |
| TargetGain=pInstance->Target>>(16-pInstance->Shift); // TargetGain in Q16.15 format |
| LVC_Mixer_SetTarget(ptrInstance->MixerStream,TargetGain); |
| ptrInstance->MixerStream[0].CallbackSet = FALSE; |
| if (ptrInstance->MixerStream[0].pCallBack != 0){ |
| (*ptrInstance->MixerStream[0].pCallBack) ( ptrInstance->MixerStream[0].pCallbackHandle, ptrInstance->MixerStream[0].pGeneralPurpose,ptrInstance->MixerStream[0].CallbackParam ); |
| } |
| } |
| } |
| } |
| |
| /**********************************************************************************/ |