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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: nxp007753 $ */
/* $Revision: 1316 $ */
/* $Date: 2010-07-23 11:53:24 +0200 (Fri, 23 Jul 2010) $ */
/* */
/****************************************************************************************/
/****************************************************************************************/
/* */
/* Includes */
/* */
/****************************************************************************************/
#include "LVREV_Private.h"
#include "VectorArithmetic.h"
/****************************************************************************************/
/* */
/* FUNCTION: LVREV_ClearAudioBuffers */
/* */
/* DESCRIPTION: */
/* This function is used to clear the internal audio buffers of the module. */
/* */
/* PARAMETERS: */
/* hInstance Instance handle */
/* */
/* RETURNS: */
/* LVREV_SUCCESS Initialisation succeeded */
/* LVREV_NULLADDRESS Instance is NULL */
/* */
/* NOTES: */
/* 1. This function must not be interrupted by the LVM_Process function */
/* */
/****************************************************************************************/
LVREV_ReturnStatus_en LVREV_ClearAudioBuffers(LVREV_Handle_t hInstance)
{
LVREV_Instance_st *pLVREV_Private = (LVREV_Instance_st *)hInstance;
/*
* Check for error conditions
*/
/* Check for NULL pointers */
if(hInstance == LVM_NULL)
{
return LVREV_NULLADDRESS;
}
/*
* Clear all filter tap data, delay-lines and other signal related data
*/
LoadConst_32(0,
(void *)&pLVREV_Private->pFastData->HPTaps, /* Destination Cast to void: no dereferencing in function*/
2);
LoadConst_32(0,
(void *)&pLVREV_Private->pFastData->LPTaps, /* Destination Cast to void: no dereferencing in function*/
2);
if((LVM_UINT16)pLVREV_Private->InstanceParams.NumDelays == LVREV_DELAYLINES_4)
{
LoadConst_32(0, (LVM_INT32 *)&pLVREV_Private->pFastData->RevLPTaps[3], 2);
LoadConst_32(0, (LVM_INT32 *)&pLVREV_Private->pFastData->RevLPTaps[2], 2);
LoadConst_32(0, (LVM_INT32 *)&pLVREV_Private->pFastData->RevLPTaps[1], 2);
LoadConst_32(0, (LVM_INT32 *)&pLVREV_Private->pFastData->RevLPTaps[0], 2);
LoadConst_32(0,pLVREV_Private->pDelay_T[3], (LVM_INT16)LVREV_MAX_T3_DELAY);
LoadConst_32(0,pLVREV_Private->pDelay_T[2], (LVM_INT16)LVREV_MAX_T2_DELAY);
LoadConst_32(0,pLVREV_Private->pDelay_T[1], (LVM_INT16)LVREV_MAX_T1_DELAY);
LoadConst_32(0,pLVREV_Private->pDelay_T[0], (LVM_INT16)LVREV_MAX_T0_DELAY);
}
if((LVM_UINT16)pLVREV_Private->InstanceParams.NumDelays >= LVREV_DELAYLINES_2)
{
LoadConst_32(0, (LVM_INT32 *)&pLVREV_Private->pFastData->RevLPTaps[1], 2);
LoadConst_32(0, (LVM_INT32 *)&pLVREV_Private->pFastData->RevLPTaps[0], 2);
LoadConst_32(0,pLVREV_Private->pDelay_T[1], (LVM_INT16)LVREV_MAX_T1_DELAY);
LoadConst_32(0,pLVREV_Private->pDelay_T[0], (LVM_INT16)LVREV_MAX_T0_DELAY);
}
if((LVM_UINT16)pLVREV_Private->InstanceParams.NumDelays >= LVREV_DELAYLINES_1)
{
LoadConst_32(0, (LVM_INT32 *)&pLVREV_Private->pFastData->RevLPTaps[0], 2);
LoadConst_32(0,pLVREV_Private->pDelay_T[0], (LVM_INT16)LVREV_MAX_T0_DELAY);
}
return LVREV_SUCCESS;
}
/* End of file */
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