diff options
Diffstat (limited to 'media/libeffects/lvm/lib/Common/src/LVC_Core_MixInSoft_D16C31_SAT.c')
| -rwxr-xr-x | media/libeffects/lvm/lib/Common/src/LVC_Core_MixInSoft_D16C31_SAT.c | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/media/libeffects/lvm/lib/Common/src/LVC_Core_MixInSoft_D16C31_SAT.c b/media/libeffects/lvm/lib/Common/src/LVC_Core_MixInSoft_D16C31_SAT.c new file mode 100755 index 0000000..0408f42 --- /dev/null +++ b/media/libeffects/lvm/lib/Common/src/LVC_Core_MixInSoft_D16C31_SAT.c @@ -0,0 +1,136 @@ +/* + * 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. + */ + +/********************************************************************************** + + $Author: beq07716 $ + $Revision: 1000 $ + $Date: 2010-06-28 13:08:20 +0200 (Mon, 28 Jun 2010) $ + +***********************************************************************************/ + +/********************************************************************************** + INCLUDE FILES +***********************************************************************************/ + +#include "LVC_Mixer_Private.h" +#include "LVM_Macros.h" + +/********************************************************************************** + FUNCTION LVCore_MIXSOFT_1ST_D16C31_WRA +***********************************************************************************/ + +void LVC_Core_MixInSoft_D16C31_SAT( LVMixer3_st *ptrInstance, + const LVM_INT16 *src, + LVM_INT16 *dst, + LVM_INT16 n) +{ + + LVM_INT16 OutLoop; + LVM_INT16 InLoop; + LVM_INT16 CurrentShort; + LVM_INT32 ii,jj; + Mix_Private_st *pInstance=(Mix_Private_st *)(ptrInstance->PrivateParams); + LVM_INT32 Delta=pInstance->Delta; + LVM_INT32 Current=pInstance->Current; + LVM_INT32 Target=pInstance->Target; + LVM_INT32 Temp; + + InLoop = (LVM_INT16)(n >> 2); /* Process per 4 samples */ + OutLoop = (LVM_INT16)(n - (InLoop << 2)); + + if(Current<Target){ + if (OutLoop){ + ADD2_SAT_32x32(Current,Delta,Temp); /* Q31 + Q31 into Q31*/ + Current=Temp; + if (Current > Target) + Current = Target; + + CurrentShort = (LVM_INT16)(Current>>16); /* From Q31 to Q15*/ + + for (ii = OutLoop; ii != 0; ii--){ + Temp = ((LVM_INT32)*dst) + (((LVM_INT32)*(src++) * CurrentShort)>>15); /* Q15 + Q15*Q15>>15 into Q15 */ + if (Temp > 0x00007FFF) + *dst++ = 0x7FFF; + else if (Temp < -0x00008000) + *dst++ = - 0x8000; + else + *dst++ = (LVM_INT16)Temp; + } + } + + for (ii = InLoop; ii != 0; ii--){ + ADD2_SAT_32x32(Current,Delta,Temp); /* Q31 + Q31 into Q31*/ + Current=Temp; + if (Current > Target) + Current = Target; + + CurrentShort = (LVM_INT16)(Current>>16); /* From Q31 to Q15*/ + + for (jj = 4; jj!=0 ; jj--){ + Temp = ((LVM_INT32)*dst) + (((LVM_INT32)*(src++) * CurrentShort)>>15); /* Q15 + Q15*Q15>>15 into Q15 */ + if (Temp > 0x00007FFF) + *dst++ = 0x7FFF; + else if (Temp < -0x00008000) + *dst++ = - 0x8000; + else + *dst++ = (LVM_INT16)Temp; + } + } + } + else{ + if (OutLoop){ + Current -= Delta; /* Q31 + Q31 into Q31*/ + if (Current < Target) + Current = Target; + + CurrentShort = (LVM_INT16)(Current>>16); /* From Q31 to Q15*/ + + for (ii = OutLoop; ii != 0; ii--){ + Temp = ((LVM_INT32)*dst) + (((LVM_INT32)*(src++) * CurrentShort)>>15); /* Q15 + Q15*Q15>>15 into Q15 */ + if (Temp > 0x00007FFF) + *dst++ = 0x7FFF; + else if (Temp < -0x00008000) + *dst++ = - 0x8000; + else + *dst++ = (LVM_INT16)Temp; + } + } + + for (ii = InLoop; ii != 0; ii--){ + Current -= Delta; /* Q31 + Q31 into Q31*/ + if (Current < Target) + Current = Target; + + CurrentShort = (LVM_INT16)(Current>>16); /* From Q31 to Q15*/ + + for (jj = 4; jj!=0 ; jj--){ + Temp = ((LVM_INT32)*dst) + (((LVM_INT32)*(src++) * CurrentShort)>>15); /* Q15 + Q15*Q15>>15 into Q15 */ + if (Temp > 0x00007FFF) + *dst++ = 0x7FFF; + else if (Temp < -0x00008000) + *dst++ = - 0x8000; + else + *dst++ = (LVM_INT16)Temp; + } + } + } + pInstance->Current=Current; +} + + +/**********************************************************************************/ |