diff options
Diffstat (limited to 'media/libeffects/lvm/lib/Reverb/src/LVREV_ClearAudioBuffers.c')
| -rwxr-xr-x | media/libeffects/lvm/lib/Reverb/src/LVREV_ClearAudioBuffers.c | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/media/libeffects/lvm/lib/Reverb/src/LVREV_ClearAudioBuffers.c b/media/libeffects/lvm/lib/Reverb/src/LVREV_ClearAudioBuffers.c new file mode 100755 index 0000000..b02b1a7 --- /dev/null +++ b/media/libeffects/lvm/lib/Reverb/src/LVREV_ClearAudioBuffers.c @@ -0,0 +1,113 @@ +/* + * 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 */ |