diff options
Diffstat (limited to 'media/libeffects/lvm/lib/Common/src/Core_MixInSoft_D32C31_SAT.c')
| -rwxr-xr-x | media/libeffects/lvm/lib/Common/src/Core_MixInSoft_D32C31_SAT.c | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/media/libeffects/lvm/lib/Common/src/Core_MixInSoft_D32C31_SAT.c b/media/libeffects/lvm/lib/Common/src/Core_MixInSoft_D32C31_SAT.c new file mode 100755 index 0000000..d557f6e --- /dev/null +++ b/media/libeffects/lvm/lib/Common/src/Core_MixInSoft_D32C31_SAT.c @@ -0,0 +1,103 @@ +/* + * 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. + */ + +/************************************************************************/ +/* */ +/* Project:: */ +/* $Author: beq07716 $*/ +/* $Revision: 1000 $*/ +/* $Date: 2010-06-28 13:08:20 +0200 (Mon, 28 Jun 2010) $*/ +/* */ +/************************************************************************/ + +/********************************************************************************** + INCLUDE FILES +***********************************************************************************/ + +#include "Mixer_private.h" +#include "LVM_Macros.h" + +/********************************************************************************** + FUNCTION CORE_MIXSOFT_1ST_D32C31_WRA +***********************************************************************************/ + +void Core_MixInSoft_D32C31_SAT( Mix_1St_Cll_t *pInstance, + const LVM_INT32 *src, + LVM_INT32 *dst, + LVM_INT16 n) +{ + LVM_INT32 Temp1,Temp2,Temp3; + LVM_INT16 OutLoop; + LVM_INT16 InLoop; + LVM_INT32 TargetTimesOneMinAlpha; + LVM_INT32 CurrentTimesAlpha; + LVM_INT16 ii,jj; + LVM_INT16 CurrentShort; + + InLoop = (LVM_INT16)(n >> 2); /* Process per 4 samples */ + OutLoop = (LVM_INT16)(n - (InLoop << 2)); + + MUL32x32INTO32((0x7FFFFFFF-pInstance->Alpha),pInstance->Target,TargetTimesOneMinAlpha,31); /* Q31 * Q0 in Q0 */ + if (pInstance->Target >= pInstance->Current){ + TargetTimesOneMinAlpha +=2; /* Ceil*/ + } + + if (OutLoop){ + MUL32x32INTO32(pInstance->Current,pInstance->Alpha,CurrentTimesAlpha,31); /* Q0 * Q31 in Q0 */ + pInstance->Current = TargetTimesOneMinAlpha + CurrentTimesAlpha; /* Q0 + Q0 into Q0*/ + CurrentShort = (LVM_INT16)(pInstance->Current>>16); /* From Q31 to Q15*/ + + for (ii = OutLoop; ii != 0; ii--){ + Temp1=*src++; + Temp2=*dst; + MUL32x16INTO32(Temp1,CurrentShort,Temp3,15) + Temp1=(Temp2>>1)+(Temp3>>1); + + if (Temp1 > 0x3FFFFFFF) + Temp1 = 0x7FFFFFFF; + else if (Temp1 < - 0x40000000) + Temp1 = 0x80000000; + else + Temp1=(Temp1<<1); + *dst++ = Temp1; + } + } + + for (ii = InLoop; ii != 0; ii--){ + MUL32x32INTO32(pInstance->Current,pInstance->Alpha,CurrentTimesAlpha,31); /* Q0 * Q31 in Q0 */ + pInstance->Current = TargetTimesOneMinAlpha + CurrentTimesAlpha; /* Q0 + Q0 into Q0*/ + CurrentShort = (LVM_INT16)(pInstance->Current>>16); /* From Q31 to Q15*/ + + for (jj = 4; jj!=0 ; jj--){ + Temp1=*src++; + Temp2=*dst; + MUL32x16INTO32(Temp1,CurrentShort,Temp3,15) + Temp1=(Temp2>>1)+(Temp3>>1); + + if (Temp1 > 0x3FFFFFFF) + Temp1 = 0x7FFFFFFF; + else if (Temp1 < - 0x40000000) + Temp1 = 0x80000000; + else + Temp1=(Temp1<<1); + *dst++ = Temp1; + } + } +} + + +/**********************************************************************************/ |