sensor.cpp revision 99fe16508200510e3d8ea2e3c34872be8cce826d
1/* 2 * Copyright (C) 2009 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#define LOG_TAG "sensor" 18#include <utils/Log.h> 19 20#include <android/looper.h> 21#include <android/sensor.h> 22 23#include <utils/RefBase.h> 24#include <utils/Looper.h> 25#include <utils/Timers.h> 26 27#include <gui/Sensor.h> 28#include <gui/SensorManager.h> 29#include <gui/SensorEventQueue.h> 30 31#include <poll.h> 32 33using android::sp; 34using android::Sensor; 35using android::SensorManager; 36using android::SensorEventQueue; 37using android::String8; 38 39/*****************************************************************************/ 40 41ASensorManager* ASensorManager_getInstance() 42{ 43 return &SensorManager::getInstance(); 44} 45 46int ASensorManager_getSensorList(ASensorManager* manager, 47 ASensorList* list) 48{ 49 Sensor const* const* l; 50 int c = static_cast<SensorManager*>(manager)->getSensorList(&l); 51 if (list) { 52 *list = reinterpret_cast<ASensorList>(l); 53 } 54 return c; 55} 56 57ASensor const* ASensorManager_getDefaultSensor(ASensorManager* manager, int type) 58{ 59 return static_cast<SensorManager*>(manager)->getDefaultSensor(type); 60} 61 62ASensor const* ASensorManager_getDefaultSensorEx(ASensorManager* manager, 63 int type, bool wakeUp) { 64 Sensor const* const* sensorList; 65 size_t size = static_cast<SensorManager*>(manager)->getSensorList(&sensorList); 66 for (size_t i = 0; i < size; ++i) { 67 if (ASensor_getType(sensorList[i]) == type && 68 ASensor_isWakeUpSensor(sensorList[i]) == wakeUp) { 69 return reinterpret_cast<ASensor const *>(sensorList[i]); 70 } 71 } 72 return NULL; 73} 74 75ASensorEventQueue* ASensorManager_createEventQueue(ASensorManager* manager, 76 ALooper* looper, int ident, ALooper_callbackFunc callback, void* data) 77{ 78 sp<SensorEventQueue> queue = 79 static_cast<SensorManager*>(manager)->createEventQueue(); 80 if (queue != 0) { 81 ALooper_addFd(looper, queue->getFd(), ident, ALOOPER_EVENT_INPUT, callback, data); 82 queue->looper = looper; 83 queue->incStrong(manager); 84 } 85 return static_cast<ASensorEventQueue*>(queue.get()); 86} 87 88int ASensorManager_destroyEventQueue(ASensorManager* manager, 89 ASensorEventQueue* inQueue) 90{ 91 sp<SensorEventQueue> queue = static_cast<SensorEventQueue*>(inQueue); 92 ALooper_removeFd(queue->looper, queue->getFd()); 93 queue->decStrong(manager); 94 return 0; 95} 96 97/*****************************************************************************/ 98 99int ASensorEventQueue_enableSensor(ASensorEventQueue* queue, ASensor const* sensor) 100{ 101 return static_cast<SensorEventQueue*>(queue)->enableSensor( 102 static_cast<Sensor const*>(sensor)); 103} 104 105int ASensorEventQueue_disableSensor(ASensorEventQueue* queue, ASensor const* sensor) 106{ 107 return static_cast<SensorEventQueue*>(queue)->disableSensor( 108 static_cast<Sensor const*>(sensor)); 109} 110 111int ASensorEventQueue_setEventRate(ASensorEventQueue* queue, ASensor const* sensor, 112 int32_t usec) 113{ 114 return static_cast<SensorEventQueue*>(queue)->setEventRate( 115 static_cast<Sensor const*>(sensor), us2ns(usec)); 116} 117 118int ASensorEventQueue_hasEvents(ASensorEventQueue* queue) 119{ 120 struct pollfd pfd; 121 pfd.fd = static_cast<SensorEventQueue*>(queue)->getFd(); 122 pfd.events = POLLIN; 123 pfd.revents = 0; 124 125 int nfd = poll(&pfd, 1, 0); 126 127 if (nfd < 0) 128 return -errno; 129 130 if (pfd.revents != POLLIN) 131 return -1; 132 133 return (nfd == 0) ? 0 : 1; 134} 135 136ssize_t ASensorEventQueue_getEvents(ASensorEventQueue* queue, 137 ASensorEvent* events, size_t count) 138{ 139 ssize_t actual = static_cast<SensorEventQueue*>(queue)->read(events, count); 140 if (actual > 0) { 141 static_cast<SensorEventQueue*>(queue)->sendAck(events, actual); 142 } 143 return actual; 144} 145 146/*****************************************************************************/ 147 148const char* ASensor_getName(ASensor const* sensor) 149{ 150 return static_cast<Sensor const*>(sensor)->getName().string(); 151} 152 153const char* ASensor_getVendor(ASensor const* sensor) 154{ 155 return static_cast<Sensor const*>(sensor)->getVendor().string(); 156} 157 158int ASensor_getType(ASensor const* sensor) 159{ 160 return static_cast<Sensor const*>(sensor)->getType(); 161} 162 163float ASensor_getResolution(ASensor const* sensor) 164{ 165 return static_cast<Sensor const*>(sensor)->getResolution(); 166} 167 168int ASensor_getMinDelay(ASensor const* sensor) 169{ 170 return static_cast<Sensor const*>(sensor)->getMinDelay(); 171} 172 173int ASensor_getFifoMaxEventCount(ASensor const* sensor) 174{ 175 return static_cast<Sensor const*>(sensor)->getFifoMaxEventCount(); 176} 177 178int ASensor_getFifoReservedEventCount(ASensor const* sensor) 179{ 180 return static_cast<Sensor const*>(sensor)->getFifoReservedEventCount(); 181} 182 183const char* ASensor_getStringType(ASensor const* sensor) 184{ 185 return static_cast<Sensor const*>(sensor)->getStringType().string(); 186} 187 188int ASensor_getReportingMode(ASensor const* sensor) 189{ 190 return static_cast<Sensor const*>(sensor)->getReportingMode(); 191} 192 193bool ASensor_isWakeUpSensor(ASensor const* sensor) 194{ 195 return static_cast<Sensor const*>(sensor)->isWakeUpSensor(); 196}