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 38extern "C" { 39#endif /* __cplusplus */ 40 41/****************************************************************************************/ 42/* TYPE DEFINITIONS */ 43/****************************************************************************************/ 44 45typedef struct 46{ 47 LVM_INT32 Storage[6]; 48 49} LVM_Timer_Instance_t; 50 51typedef 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 66void LVM_Timer_Init ( LVM_Timer_Instance_t *pInstance, 67 LVM_Timer_Params_t *pParams ); 68 69 70void 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