2 * Copyright (C) 2010 The Android Open Source Project
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
8 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 #define LOG_TAG "Sensors"
19 #include <sensor/SensorManager.h>
22 #include <sys/types.h>
24 #include <cutils/native_handle.h>
25 #include <utils/Errors.h>
26 #include <utils/RefBase.h>
27 #include <utils/Singleton.h>
29 #include <binder/IBinder.h>
30 #include <binder/IServiceManager.h>
32 #include <sensor/ISensorServer.h>
33 #include <sensor/ISensorEventConnection.h>
34 #include <sensor/Sensor.h>
35 #include <sensor/SensorEventQueue.h>
37 // ----------------------------------------------------------------------------
39 // ----------------------------------------------------------------------------
41 Mutex SensorManager::sLock;
42 std::map<String16, SensorManager*> SensorManager::sPackageInstances;
44 SensorManager& SensorManager::getInstanceForPackage(const String16& packageName) {
45 waitForSensorService(nullptr);
47 Mutex::Autolock _l(sLock);
48 SensorManager* sensorManager;
49 auto iterator = sPackageInstances.find(packageName);
51 if (iterator != sPackageInstances.end()) {
52 sensorManager = iterator->second;
54 String16 opPackageName = packageName;
56 // It is possible that the calling code has no access to the package name.
57 // In this case we will get the packages for the calling UID and pick the
58 // first one for attributing the app op. This will work correctly for
59 // runtime permissions as for legacy apps we will toggle the app op for
60 // all packages in the UID. The caveat is that the operation may be attributed
61 // to the wrong package and stats based on app ops may be slightly off.
62 if (opPackageName.size() <= 0) {
63 sp<IBinder> binder = defaultServiceManager()->getService(String16("permission"));
65 const uid_t uid = IPCThreadState::self()->getCallingUid();
66 Vector<String16> packages;
67 interface_cast<IPermissionController>(binder)->getPackagesForUid(uid, packages);
68 if (!packages.isEmpty()) {
69 opPackageName = packages[0];
71 ALOGE("No packages for calling UID");
74 ALOGE("Cannot get permission service");
78 sensorManager = new SensorManager(opPackageName);
80 // If we had no package name, we looked it up from the UID and the sensor
81 // manager instance we created should also be mapped to the empty package
82 // name, to avoid looking up the packages for a UID and get the same result.
83 if (packageName.size() <= 0) {
84 sPackageInstances.insert(std::make_pair(String16(), sensorManager));
87 // Stash the per package sensor manager.
88 sPackageInstances.insert(std::make_pair(opPackageName, sensorManager));
91 return *sensorManager;
94 SensorManager::SensorManager(const String16& opPackageName)
95 : mSensorList(0), mOpPackageName(opPackageName), mDirectConnectionHandle(1) {
96 Mutex::Autolock _l(mLock);
100 SensorManager::~SensorManager() {
104 status_t SensorManager::waitForSensorService(sp<ISensorServer> *server) {
105 // try for 300 seconds (60*5(getService() tries for 5 seconds)) before giving up ...
107 const String16 name("sensorservice");
108 for (int i = 0; i < 60; i++) {
109 status_t err = getService(name, &s);
115 if (server != nullptr) {
126 void SensorManager::sensorManagerDied() {
127 Mutex::Autolock _l(mLock);
128 mSensorServer.clear();
134 status_t SensorManager::assertStateLocked() {
135 bool initSensorManager = false;
136 if (mSensorServer == NULL) {
137 initSensorManager = true;
139 // Ping binder to check if sensorservice is alive.
140 status_t err = IInterface::asBinder(mSensorServer)->pingBinder();
141 if (err != NO_ERROR) {
142 initSensorManager = true;
145 if (initSensorManager) {
146 waitForSensorService(&mSensorServer);
147 LOG_ALWAYS_FATAL_IF(mSensorServer == nullptr, "getService(SensorService) NULL");
149 class DeathObserver : public IBinder::DeathRecipient {
150 SensorManager& mSensorManager;
151 virtual void binderDied(const wp<IBinder>& who) {
152 ALOGW("sensorservice died [%p]", who.unsafe_get());
153 mSensorManager.sensorManagerDied();
156 explicit DeathObserver(SensorManager& mgr) : mSensorManager(mgr) { }
159 mDeathObserver = new DeathObserver(*const_cast<SensorManager *>(this));
160 IInterface::asBinder(mSensorServer)->linkToDeath(mDeathObserver);
162 mSensors = mSensorServer->getSensorList(mOpPackageName);
163 size_t count = mSensors.size();
165 static_cast<Sensor const**>(malloc(count * sizeof(Sensor*)));
166 LOG_ALWAYS_FATAL_IF(mSensorList == NULL, "mSensorList NULL");
168 for (size_t i=0 ; i<count ; i++) {
169 mSensorList[i] = mSensors.array() + i;
176 ssize_t SensorManager::getSensorList(Sensor const* const** list) {
177 Mutex::Autolock _l(mLock);
178 status_t err = assertStateLocked();
180 return static_cast<ssize_t>(err);
183 return static_cast<ssize_t>(mSensors.size());
186 ssize_t SensorManager::getDynamicSensorList(Vector<Sensor> & dynamicSensors) {
187 Mutex::Autolock _l(mLock);
188 status_t err = assertStateLocked();
190 return static_cast<ssize_t>(err);
193 dynamicSensors = mSensorServer->getDynamicSensorList(mOpPackageName);
194 size_t count = dynamicSensors.size();
196 return static_cast<ssize_t>(count);
199 Sensor const* SensorManager::getDefaultSensor(int type)
201 Mutex::Autolock _l(mLock);
202 if (assertStateLocked() == NO_ERROR) {
203 bool wakeUpSensor = false;
204 // For the following sensor types, return a wake-up sensor. These types are by default
205 // defined as wake-up sensors. For the rest of the sensor types defined in sensors.h return
206 // a non_wake-up version.
207 if (type == SENSOR_TYPE_PROXIMITY || type == SENSOR_TYPE_SIGNIFICANT_MOTION ||
208 type == SENSOR_TYPE_TILT_DETECTOR || type == SENSOR_TYPE_WAKE_GESTURE ||
209 type == SENSOR_TYPE_GLANCE_GESTURE || type == SENSOR_TYPE_PICK_UP_GESTURE ||
210 type == SENSOR_TYPE_WRIST_TILT_GESTURE ||
211 type == SENSOR_TYPE_LOW_LATENCY_OFFBODY_DETECT) {
214 // For now we just return the first sensor of that type we find.
215 // in the future it will make sense to let the SensorService make
217 for (size_t i=0 ; i<mSensors.size() ; i++) {
218 if (mSensorList[i]->getType() == type &&
219 mSensorList[i]->isWakeUpSensor() == wakeUpSensor) {
220 return mSensorList[i];
227 sp<SensorEventQueue> SensorManager::createEventQueue(String8 packageName, int mode) {
228 sp<SensorEventQueue> queue;
230 Mutex::Autolock _l(mLock);
231 while (assertStateLocked() == NO_ERROR) {
232 sp<ISensorEventConnection> connection =
233 mSensorServer->createSensorEventConnection(packageName, mode, mOpPackageName);
234 if (connection == NULL) {
235 // SensorService just died or the app doesn't have required permissions.
236 ALOGE("createEventQueue: connection is NULL.");
239 queue = new SensorEventQueue(connection);
245 bool SensorManager::isDataInjectionEnabled() {
246 Mutex::Autolock _l(mLock);
247 if (assertStateLocked() == NO_ERROR) {
248 return mSensorServer->isDataInjectionEnabled();
253 int SensorManager::createDirectChannel(
254 size_t size, int channelType, const native_handle_t *resourceHandle) {
255 Mutex::Autolock _l(mLock);
256 if (assertStateLocked() != NO_ERROR) {
260 if (channelType != SENSOR_DIRECT_MEM_TYPE_ASHMEM
261 && channelType != SENSOR_DIRECT_MEM_TYPE_GRALLOC) {
262 ALOGE("Bad channel shared memory type %d", channelType);
266 sp<ISensorEventConnection> conn =
267 mSensorServer->createSensorDirectConnection(mOpPackageName,
268 static_cast<uint32_t>(size),
269 static_cast<int32_t>(channelType),
270 SENSOR_DIRECT_FMT_SENSORS_EVENT, resourceHandle);
271 if (conn == nullptr) {
275 int nativeHandle = mDirectConnectionHandle++;
276 mDirectConnection.emplace(nativeHandle, conn);
280 void SensorManager::destroyDirectChannel(int channelNativeHandle) {
281 Mutex::Autolock _l(mLock);
282 if (assertStateLocked() == NO_ERROR) {
283 mDirectConnection.erase(channelNativeHandle);
287 int SensorManager::configureDirectChannel(int channelNativeHandle, int sensorHandle, int rateLevel) {
288 Mutex::Autolock _l(mLock);
289 if (assertStateLocked() != NO_ERROR) {
293 auto i = mDirectConnection.find(channelNativeHandle);
294 if (i == mDirectConnection.end()) {
295 ALOGE("Cannot find the handle in client direct connection table");
300 ret = i->second->configureChannel(sensorHandle, rateLevel);
301 ALOGE_IF(ret < 0, "SensorManager::configureChannel (%d, %d) returns %d",
302 static_cast<int>(sensorHandle), static_cast<int>(rateLevel),
303 static_cast<int>(ret));
307 int SensorManager::setOperationParameter(
308 int handle, int type,
309 const Vector<float> &floats, const Vector<int32_t> &ints) {
310 Mutex::Autolock _l(mLock);
311 if (assertStateLocked() != NO_ERROR) {
314 return mSensorServer->setOperationParameter(handle, type, floats, ints);
317 // ----------------------------------------------------------------------------
318 }; // namespace android