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 /* INCLUDE FILES */ 20 /****************************************************************************************/ 21 22 #include "LVM_Timer.h" 23 #include "LVM_Timer_Private.h" 24 #include "LVM_Macros.h" 25 26 /****************************************************************************************/ 27 /* DEFINITIONS */ 28 /****************************************************************************************/ 29 30 #define OneOverThousandInQ24 16777 31 32 /****************************************************************************************/ 33 /* INIT FUNCTION */ 34 /****************************************************************************************/ 35 36 void LVM_Timer_Init ( LVM_Timer_Instance_t *pInstance, 37 LVM_Timer_Params_t *pParams ){ 38 39 LVM_Timer_Instance_Private_t *pInstancePr; 40 pInstancePr = (LVM_Timer_Instance_Private_t *)pInstance; 41 42 pInstancePr->CallBackParam = pParams->CallBackParam; 43 pInstancePr->pCallBackParams = pParams->pCallBackParams; 44 pInstancePr->pCallbackInstance = pParams->pCallbackInstance; 45 pInstancePr->pCallBack = pParams->pCallBack; 46 pInstancePr->TimerArmed = 1; 47 48 MUL32x16INTO32(pParams->SamplingRate,OneOverThousandInQ24,pInstancePr->RemainingTimeInSamples,16); /* (Q0 * Q24) >>16 into Q8*/ 49 MUL32x16INTO32(pInstancePr->RemainingTimeInSamples,pParams->TimeInMs,pInstancePr->RemainingTimeInSamples,8); /* (Q8 * Q0) >>8 into Q0*/ 50 } 51 52 /****************************************************************************************/ 53 /* END OF FILE */ 54 /****************************************************************************************/ 55
