SensorService.h revision b6df7d0e4c2117ca476662bd52b6745b3d8a305f
1/* 2 * Copyright (C) 2010 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#ifndef ANDROID_SENSOR_SERVICE_H 18#define ANDROID_SENSOR_SERVICE_H 19 20#include <stdint.h> 21#include <sys/types.h> 22 23#include <utils/Vector.h> 24#include <utils/SortedVector.h> 25#include <utils/KeyedVector.h> 26#include <utils/threads.h> 27#include <utils/RefBase.h> 28 29#include <binder/BinderService.h> 30 31#include <gui/Sensor.h> 32#include <gui/BitTube.h> 33#include <gui/ISensorServer.h> 34#include <gui/ISensorEventConnection.h> 35 36#include "SensorInterface.h" 37 38// --------------------------------------------------------------------------- 39 40#define DEBUG_CONNECTIONS false 41 42struct sensors_poll_device_t; 43struct sensors_module_t; 44 45namespace android { 46// --------------------------------------------------------------------------- 47 48class SensorService : 49 public BinderService<SensorService>, 50 public BnSensorServer, 51 protected Thread 52{ 53 friend class BinderService<SensorService>; 54 55 static const nsecs_t MINIMUM_EVENTS_PERIOD = 1000000; // 1000 Hz 56 static const char* WAKE_LOCK_NAME; 57 58 static char const* getServiceName() ANDROID_API { return "sensorservice"; } 59 SensorService() ANDROID_API; 60 virtual ~SensorService(); 61 62 virtual void onFirstRef(); 63 64 // Thread interface 65 virtual bool threadLoop(); 66 67 // ISensorServer interface 68 virtual Vector<Sensor> getSensorList(); 69 virtual sp<ISensorEventConnection> createSensorEventConnection(); 70 virtual status_t dump(int fd, const Vector<String16>& args); 71 72 73 class SensorEventConnection : public BnSensorEventConnection { 74 virtual ~SensorEventConnection(); 75 virtual void onFirstRef(); 76 virtual sp<BitTube> getSensorChannel() const; 77 virtual status_t enableDisable(int handle, bool enabled); 78 virtual status_t setEventRate(int handle, nsecs_t ns); 79 80 sp<SensorService> const mService; 81 sp<BitTube> const mChannel; 82 uid_t mUid; 83 mutable Mutex mConnectionLock; 84 85 // protected by SensorService::mLock 86 SortedVector<int> mSensorInfo; 87 88 public: 89 SensorEventConnection(const sp<SensorService>& service, uid_t uid); 90 91 status_t sendEvents(sensors_event_t const* buffer, size_t count, 92 sensors_event_t* scratch = NULL); 93 bool hasSensor(int32_t handle) const; 94 bool hasAnySensor() const; 95 bool addSensor(int32_t handle); 96 bool removeSensor(int32_t handle); 97 98 uid_t getUid() const { return mUid; } 99 }; 100 101 class SensorRecord { 102 SortedVector< wp<SensorEventConnection> > mConnections; 103 public: 104 SensorRecord(const sp<SensorEventConnection>& connection); 105 bool addConnection(const sp<SensorEventConnection>& connection); 106 bool removeConnection(const wp<SensorEventConnection>& connection); 107 size_t getNumConnections() const { return mConnections.size(); } 108 }; 109 110 SortedVector< wp<SensorEventConnection> > getActiveConnections() const; 111 DefaultKeyedVector<int, SensorInterface*> getActiveVirtualSensors() const; 112 113 String8 getSensorName(int handle) const; 114 int getSensorType(int handle) const; 115 void recordLastValue(sensors_event_t const * buffer, size_t count); 116 static void sortEventBuffer(sensors_event_t* buffer, size_t count); 117 void registerSensor(SensorInterface* sensor); 118 void registerVirtualSensor(SensorInterface* sensor); 119 status_t cleanupWithoutDisable(const sp<SensorEventConnection>& connection, 120 int handle); 121 void cleanupAutoDisabledSensor(const sp<SensorEventConnection>& connection, 122 sensors_event_t const* buffer, const int count); 123 124 // constants 125 Vector<Sensor> mSensorList; 126 Vector<Sensor> mUserSensorListDebug; 127 Vector<Sensor> mUserSensorList; 128 DefaultKeyedVector<int, SensorInterface*> mSensorMap; 129 Vector<SensorInterface *> mVirtualSensorList; 130 status_t mInitCheck; 131 132 // protected by mLock 133 mutable Mutex mLock; 134 DefaultKeyedVector<int, SensorRecord*> mActiveSensors; 135 DefaultKeyedVector<int, SensorInterface*> mActiveVirtualSensors; 136 SortedVector< wp<SensorEventConnection> > mActiveConnections; 137 138 // The size of this vector is constant, only the items are mutable 139 KeyedVector<int32_t, sensors_event_t> mLastEventSeen; 140 141public: 142 void cleanupConnection(SensorEventConnection* connection); 143 status_t enable(const sp<SensorEventConnection>& connection, int handle); 144 status_t disable(const sp<SensorEventConnection>& connection, int handle); 145 status_t setEventRate(const sp<SensorEventConnection>& connection, int handle, nsecs_t ns); 146}; 147 148// --------------------------------------------------------------------------- 149}; // namespace android 150 151#endif // ANDROID_SENSOR_SERVICE_H 152