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/*
* 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;
}
}
}
/**********************************************************************************/
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