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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.
*/
/**********************************************************************************
$Author: beq07716 $
$Revision: 1000 $
$Date: 2010-06-28 13:08:20 +0200 (Mon, 28 Jun 2010) $
***********************************************************************************/
/**********************************************************************************
INCLUDE FILES
***********************************************************************************/
#include "LVC_Mixer_Private.h"
#include "VectorArithmetic.h"
#include "ScalarArithmetic.h"
/**********************************************************************************
DEFINITIONS
***********************************************************************************/
#define TRUE 1
#define FALSE 0
/**********************************************************************************
FUNCTION MIXINSOFT_D16C31_SAT
***********************************************************************************/
void LVC_MixInSoft_D16C31_SAT( LVMixer3_1St_st *ptrInstance,
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,src,n);
LVC_Core_MixInSoft_D16C31_SAT( &(ptrInstance->MixerStream[0]), src, dst, n);
}
else
LVC_Core_MixInSoft_D16C31_SAT( &(ptrInstance->MixerStream[0]), src, dst, n);
}
}
/******************************************************************************
HARD MIXING
*******************************************************************************/
if (HardMixing){
if (pInstance->Target != 0){ /* Nothing to do in case Target = 0 */
if ((pInstance->Target>>16) == 0x7FFF){
if(pInstance->Shift!=0)
Shift_Sat_v16xv16 ((LVM_INT16)pInstance->Shift,src,src,n);
Add2_Sat_16x16( src, dst, n );
}
else{
if(pInstance->Shift!=0)
Shift_Sat_v16xv16 ((LVM_INT16)pInstance->Shift,src,src,n);
Mac3s_Sat_16x16(src,(LVM_INT16)(pInstance->Target>>16),dst,n);
pInstance->Current = pInstance->Target; /* In case the LVCore function would have changed the Current value */
}
}
}
/******************************************************************************
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 );
}
}
}
}
/**********************************************************************************/
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