1 /* 2 * Copyright (C) 2004-2010 NXP Software 3 * Copyright (C) 2010 The Android Open Source Project 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18 /****************************************************************************************/ 19 /* */ 20 /* Includes */ 21 /* */ 22 /****************************************************************************************/ 23 #include "LVREV_Private.h" 24 #include "VectorArithmetic.h" 25 26 /****************************************************************************************/ 27 /* */ 28 /* FUNCTION: LVREV_ClearAudioBuffers */ 29 /* */ 30 /* DESCRIPTION: */ 31 /* This function is used to clear the internal audio buffers of the module. */ 32 /* */ 33 /* PARAMETERS: */ 34 /* hInstance Instance handle */ 35 /* */ 36 /* RETURNS: */ 37 /* LVREV_SUCCESS Initialisation succeeded */ 38 /* LVREV_NULLADDRESS Instance is NULL */ 39 /* */ 40 /* NOTES: */ 41 /* 1. This function must not be interrupted by the LVM_Process function */ 42 /* */ 43 /****************************************************************************************/ LVREV_ClearAudioBuffers(LVREV_Handle_t hInstance)44LVREV_ReturnStatus_en LVREV_ClearAudioBuffers(LVREV_Handle_t hInstance) { 45 LVREV_Instance_st* pLVREV_Private = (LVREV_Instance_st*)hInstance; 46 47 /* 48 * Check for error conditions 49 */ 50 /* Check for NULL pointers */ 51 if (hInstance == LVM_NULL) { 52 return LVREV_NULLADDRESS; 53 } 54 55 /* 56 * Clear all filter tap data, delay-lines and other signal related data 57 */ 58 59 pLVREV_Private->pRevHPFBiquad->clear(); 60 pLVREV_Private->pRevLPFBiquad->clear(); 61 for (size_t i = 0; i < pLVREV_Private->InstanceParams.NumDelays; i++) { 62 pLVREV_Private->revLPFBiquad[i]->clear(); 63 memset(pLVREV_Private->pDelay_T[i], 0, LVREV_MAX_T_DELAY[i] * 64 sizeof(pLVREV_Private->pDelay_T[i][0])); 65 } 66 return LVREV_SUCCESS; 67 } 68 69 /* End of file */ 70