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 #ifndef __LVM_TIMER_H__ 19 #define __LVM_TIMER_H__ 20 21 #include "LVM_Types.h" 22 23 /****************************************************************************************/ 24 /* */ 25 /* Header file for the LVM_Timer library */ 26 /* */ 27 /* Functionality: */ 28 /* The timer will count down a number of ms, based on the number of samples it */ 29 /* sees and the curent sampling rate. When the timer expires, a registered */ 30 /* callback function will be called. */ 31 /* The maximal number of sampless that can be called by the timer is 2^32, which */ 32 /* corresponds to 24.8 hours at a sampling rate of 48 kHz */ 33 /* The timer currently does not suport changes in sampling rate while timing. */ 34 /****************************************************************************************/ 35 36 37 #ifdef __cplusplus 38 extern "C" { 39 #endif /* __cplusplus */ 40 41 /****************************************************************************************/ 42 /* TYPE DEFINITIONS */ 43 /****************************************************************************************/ 44 45 typedef struct 46 { 47 LVM_INT32 Storage[6]; 48 49 } LVM_Timer_Instance_t; 50 51 typedef struct 52 { 53 LVM_INT32 SamplingRate; 54 LVM_INT16 TimeInMs; 55 LVM_INT32 CallBackParam; 56 void *pCallBackParams; 57 void *pCallbackInstance; 58 void (*pCallBack)(void*,void*,LVM_INT32); 59 60 } LVM_Timer_Params_t; 61 62 /****************************************************************************************/ 63 /* FUNCTION PROTOTYPES */ 64 /****************************************************************************************/ 65 66 void LVM_Timer_Init ( LVM_Timer_Instance_t *pInstance, 67 LVM_Timer_Params_t *pParams ); 68 69 70 void LVM_Timer ( LVM_Timer_Instance_t *pInstance, 71 LVM_INT16 BlockSize ); 72 73 74 /****************************************************************************************/ 75 /* END OF HEADER */ 76 /****************************************************************************************/ 77 78 #ifdef __cplusplus 79 } 80 #endif /* __cplusplus */ 81 82 #endif /* __LVM_TIMER_H__ */ 83