| /* |
| * Copyright (C) 2010 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include <cutils/properties.h> |
| |
| #include <binder/AppOpsManager.h> |
| #include <binder/BinderService.h> |
| #include <binder/IServiceManager.h> |
| #include <binder/PermissionCache.h> |
| |
| #include <gui/SensorEventQueue.h> |
| |
| #include <hardware/sensors.h> |
| #include <hardware_legacy/power.h> |
| |
| #include "BatteryService.h" |
| #include "CorrectedGyroSensor.h" |
| #include "GravitySensor.h" |
| #include "LinearAccelerationSensor.h" |
| #include "OrientationSensor.h" |
| #include "RotationVectorSensor.h" |
| #include "SensorFusion.h" |
| |
| #include "SensorService.h" |
| #include "SensorEventConnection.h" |
| #include "SensorEventAckReceiver.h" |
| #include "SensorRecord.h" |
| #include "SensorRegistrationInfo.h" |
| #include "MostRecentEventLogger.h" |
| |
| #include <inttypes.h> |
| #include <math.h> |
| #include <stdint.h> |
| #include <sys/types.h> |
| #include <sys/socket.h> |
| |
| namespace android { |
| // --------------------------------------------------------------------------- |
| |
| /* |
| * Notes: |
| * |
| * - what about a gyro-corrected magnetic-field sensor? |
| * - run mag sensor from time to time to force calibration |
| * - gravity sensor length is wrong (=> drift in linear-acc sensor) |
| * |
| */ |
| |
| const char* SensorService::WAKE_LOCK_NAME = "SensorService_wakelock"; |
| // Permissions. |
| static const String16 sDump("android.permission.DUMP"); |
| |
| SensorService::SensorService() |
| : mInitCheck(NO_INIT), mSocketBufferSize(SOCKET_BUFFER_SIZE_NON_BATCHED), |
| mWakeLockAcquired(false) |
| { |
| } |
| |
| void SensorService::onFirstRef() |
| { |
| ALOGD("nuSensorService starting..."); |
| SensorDevice& dev(SensorDevice::getInstance()); |
| |
| if (dev.initCheck() == NO_ERROR) { |
| sensor_t const* list; |
| ssize_t count = dev.getSensorList(&list); |
| if (count > 0) { |
| ssize_t orientationIndex = -1; |
| bool hasGyro = false, hasAccel = false, hasMag = false; |
| uint32_t virtualSensorsNeeds = |
| (1<<SENSOR_TYPE_GRAVITY) | |
| (1<<SENSOR_TYPE_LINEAR_ACCELERATION) | |
| (1<<SENSOR_TYPE_ROTATION_VECTOR) | |
| (1<<SENSOR_TYPE_GEOMAGNETIC_ROTATION_VECTOR) | |
| (1<<SENSOR_TYPE_GAME_ROTATION_VECTOR); |
| |
| mLastEventSeen.setCapacity(count); |
| for (ssize_t i=0 ; i<count ; i++) { |
| bool useThisSensor=true; |
| |
| switch (list[i].type) { |
| case SENSOR_TYPE_ACCELEROMETER: |
| hasAccel = true; |
| break; |
| case SENSOR_TYPE_MAGNETIC_FIELD: |
| hasMag = true; |
| break; |
| case SENSOR_TYPE_ORIENTATION: |
| orientationIndex = i; |
| break; |
| case SENSOR_TYPE_GYROSCOPE: |
| case SENSOR_TYPE_GYROSCOPE_UNCALIBRATED: |
| hasGyro = true; |
| break; |
| case SENSOR_TYPE_GRAVITY: |
| case SENSOR_TYPE_LINEAR_ACCELERATION: |
| case SENSOR_TYPE_ROTATION_VECTOR: |
| case SENSOR_TYPE_GEOMAGNETIC_ROTATION_VECTOR: |
| case SENSOR_TYPE_GAME_ROTATION_VECTOR: |
| if (IGNORE_HARDWARE_FUSION) { |
| useThisSensor = false; |
| } else { |
| virtualSensorsNeeds &= ~(1<<list[i].type); |
| } |
| break; |
| } |
| if (useThisSensor) { |
| registerSensor( new HardwareSensor(list[i]) ); |
| } |
| } |
| |
| // it's safe to instantiate the SensorFusion object here |
| // (it wants to be instantiated after h/w sensors have been |
| // registered) |
| SensorFusion::getInstance(); |
| |
| // build the sensor list returned to users |
| mUserSensorList = mSensorList; |
| |
| if (hasGyro && hasAccel && hasMag) { |
| // Add Android virtual sensors if they're not already |
| // available in the HAL |
| Sensor aSensor; |
| |
| aSensor = registerVirtualSensor( new RotationVectorSensor() ); |
| if (virtualSensorsNeeds & (1<<SENSOR_TYPE_ROTATION_VECTOR)) { |
| mUserSensorList.add(aSensor); |
| } |
| |
| aSensor = registerVirtualSensor( new OrientationSensor() ); |
| if (virtualSensorsNeeds & (1<<SENSOR_TYPE_ROTATION_VECTOR)) { |
| // if we are doing our own rotation-vector, also add |
| // the orientation sensor and remove the HAL provided one. |
| mUserSensorList.replaceAt(aSensor, orientationIndex); |
| } |
| |
| aSensor = registerVirtualSensor( |
| new LinearAccelerationSensor(list, count) ); |
| if (virtualSensorsNeeds & |
| (1<<SENSOR_TYPE_LINEAR_ACCELERATION)) { |
| mUserSensorList.add(aSensor); |
| } |
| |
| // virtual debugging sensors are not added to mUserSensorList |
| registerVirtualSensor( new CorrectedGyroSensor(list, count) ); |
| registerVirtualSensor( new GyroDriftSensor() ); |
| } |
| |
| if (hasAccel && hasGyro) { |
| Sensor aSensor; |
| |
| aSensor = registerVirtualSensor( |
| new GravitySensor(list, count) ); |
| if (virtualSensorsNeeds & (1<<SENSOR_TYPE_GRAVITY)) { |
| mUserSensorList.add(aSensor); |
| } |
| |
| aSensor = registerVirtualSensor( |
| new GameRotationVectorSensor() ); |
| if (virtualSensorsNeeds & |
| (1<<SENSOR_TYPE_GAME_ROTATION_VECTOR)) { |
| mUserSensorList.add(aSensor); |
| } |
| } |
| |
| if (hasAccel && hasMag) { |
| Sensor aSensor; |
| |
| aSensor = registerVirtualSensor( |
| new GeoMagRotationVectorSensor() ); |
| if (virtualSensorsNeeds & |
| (1<<SENSOR_TYPE_GEOMAGNETIC_ROTATION_VECTOR)) { |
| mUserSensorList.add(aSensor); |
| } |
| } |
| |
| // debugging sensor list |
| mUserSensorListDebug = mSensorList; |
| |
| // Check if the device really supports batching by looking at the FIFO event |
| // counts for each sensor. |
| bool batchingSupported = false; |
| for (size_t i = 0; i < mSensorList.size(); ++i) { |
| if (mSensorList[i].getFifoMaxEventCount() > 0) { |
| batchingSupported = true; |
| break; |
| } |
| } |
| |
| if (batchingSupported) { |
| // Increase socket buffer size to a max of 100 KB for batching capabilities. |
| mSocketBufferSize = MAX_SOCKET_BUFFER_SIZE_BATCHED; |
| } else { |
| mSocketBufferSize = SOCKET_BUFFER_SIZE_NON_BATCHED; |
| } |
| |
| // Compare the socketBufferSize value against the system limits and limit |
| // it to maxSystemSocketBufferSize if necessary. |
| FILE *fp = fopen("/proc/sys/net/core/wmem_max", "r"); |
| char line[128]; |
| if (fp != NULL && fgets(line, sizeof(line), fp) != NULL) { |
| line[sizeof(line) - 1] = '\0'; |
| size_t maxSystemSocketBufferSize; |
| sscanf(line, "%zu", &maxSystemSocketBufferSize); |
| if (mSocketBufferSize > maxSystemSocketBufferSize) { |
| mSocketBufferSize = maxSystemSocketBufferSize; |
| } |
| } |
| if (fp) { |
| fclose(fp); |
| } |
| |
| mWakeLockAcquired = false; |
| mLooper = new Looper(false); |
| const size_t minBufferSize = SensorEventQueue::MAX_RECEIVE_BUFFER_EVENT_COUNT; |
| mSensorEventBuffer = new sensors_event_t[minBufferSize]; |
| mSensorEventScratch = new sensors_event_t[minBufferSize]; |
| mMapFlushEventsToConnections = new SensorEventConnection const * [minBufferSize]; |
| mCurrentOperatingMode = NORMAL; |
| |
| mNextSensorRegIndex = 0; |
| for (int i = 0; i < SENSOR_REGISTRATIONS_BUF_SIZE; ++i) { |
| mLastNSensorRegistrations.push(); |
| } |
| |
| mInitCheck = NO_ERROR; |
| mAckReceiver = new SensorEventAckReceiver(this); |
| mAckReceiver->run("SensorEventAckReceiver", PRIORITY_URGENT_DISPLAY); |
| run("SensorService", PRIORITY_URGENT_DISPLAY); |
| } |
| } |
| } |
| |
| Sensor SensorService::registerSensor(SensorInterface* s) |
| { |
| const Sensor sensor(s->getSensor()); |
| // add to the sensor list (returned to clients) |
| mSensorList.add(sensor); |
| // add to our handle->SensorInterface mapping |
| mSensorMap.add(sensor.getHandle(), s); |
| // create an entry in the mLastEventSeen array |
| mLastEventSeen.add(sensor.getHandle(), NULL); |
| |
| return sensor; |
| } |
| |
| Sensor SensorService::registerDynamicSensor(SensorInterface* s) |
| { |
| Sensor sensor = registerSensor(s); |
| mDynamicSensorList.add(sensor); |
| return sensor; |
| } |
| |
| bool SensorService::unregisterDynamicSensor(int handle) { |
| bool found = false; |
| |
| for (size_t i=0 ; i<mSensorList.size() ; i++) { |
| if (mSensorList[i].getHandle() == handle) { |
| mSensorList.removeAt(i); |
| found = true; |
| break; |
| } |
| } |
| |
| if (found) { |
| for (size_t i=0 ; i<mDynamicSensorList.size() ; i++) { |
| if (mDynamicSensorList[i].getHandle() == handle) { |
| mDynamicSensorList.removeAt(i); |
| } |
| } |
| |
| mSensorMap.removeItem(handle); |
| mLastEventSeen.removeItem(handle); |
| } |
| return found; |
| } |
| |
| Sensor SensorService::registerVirtualSensor(SensorInterface* s) |
| { |
| Sensor sensor = registerSensor(s); |
| mVirtualSensorList.add( s ); |
| return sensor; |
| } |
| |
| SensorService::~SensorService() |
| { |
| for (size_t i=0 ; i<mSensorMap.size() ; i++) |
| delete mSensorMap.valueAt(i); |
| } |
| |
| status_t SensorService::dump(int fd, const Vector<String16>& args) |
| { |
| String8 result; |
| if (!PermissionCache::checkCallingPermission(sDump)) { |
| result.appendFormat("Permission Denial: can't dump SensorService from pid=%d, uid=%d\n", |
| IPCThreadState::self()->getCallingPid(), |
| IPCThreadState::self()->getCallingUid()); |
| } else { |
| if (args.size() > 2) { |
| return INVALID_OPERATION; |
| } |
| Mutex::Autolock _l(mLock); |
| SensorDevice& dev(SensorDevice::getInstance()); |
| if (args.size() == 2 && args[0] == String16("restrict")) { |
| // If already in restricted mode. Ignore. |
| if (mCurrentOperatingMode == RESTRICTED) { |
| return status_t(NO_ERROR); |
| } |
| // If in any mode other than normal, ignore. |
| if (mCurrentOperatingMode != NORMAL) { |
| return INVALID_OPERATION; |
| } |
| mCurrentOperatingMode = RESTRICTED; |
| dev.disableAllSensors(); |
| // Clear all pending flush connections for all active sensors. If one of the active |
| // connections has called flush() and the underlying sensor has been disabled before a |
| // flush complete event is returned, we need to remove the connection from this queue. |
| for (size_t i=0 ; i< mActiveSensors.size(); ++i) { |
| mActiveSensors.valueAt(i)->clearAllPendingFlushConnections(); |
| } |
| mWhiteListedPackage.setTo(String8(args[1])); |
| return status_t(NO_ERROR); |
| } else if (args.size() == 1 && args[0] == String16("enable")) { |
| // If currently in restricted mode, reset back to NORMAL mode else ignore. |
| if (mCurrentOperatingMode == RESTRICTED) { |
| mCurrentOperatingMode = NORMAL; |
| dev.enableAllSensors(); |
| } |
| if (mCurrentOperatingMode == DATA_INJECTION) { |
| resetToNormalModeLocked(); |
| } |
| mWhiteListedPackage.clear(); |
| return status_t(NO_ERROR); |
| } else if (args.size() == 2 && args[0] == String16("data_injection")) { |
| if (mCurrentOperatingMode == NORMAL) { |
| dev.disableAllSensors(); |
| status_t err = dev.setMode(DATA_INJECTION); |
| if (err == NO_ERROR) { |
| mCurrentOperatingMode = DATA_INJECTION; |
| } else { |
| // Re-enable sensors. |
| dev.enableAllSensors(); |
| } |
| mWhiteListedPackage.setTo(String8(args[1])); |
| return NO_ERROR; |
| } else if (mCurrentOperatingMode == DATA_INJECTION) { |
| // Already in DATA_INJECTION mode. Treat this as a no_op. |
| return NO_ERROR; |
| } else { |
| // Transition to data injection mode supported only from NORMAL mode. |
| return INVALID_OPERATION; |
| } |
| } else if (mSensorList.size() == 0) { |
| result.append("No Sensors on the device\n"); |
| } else { |
| // Default dump the sensor list and debugging information. |
| result.append("Sensor List:\n"); |
| for (size_t i=0 ; i<mSensorList.size() ; i++) { |
| const Sensor& s(mSensorList[i]); |
| result.appendFormat( |
| "%-15s| %-10s| version=%d |%-20s| 0x%08x | \"%s\" | type=%d |", |
| s.getName().string(), |
| s.getVendor().string(), |
| s.getVersion(), |
| s.getStringType().string(), |
| s.getHandle(), |
| s.getRequiredPermission().string(), |
| s.getType()); |
| |
| const int reportingMode = s.getReportingMode(); |
| if (reportingMode == AREPORTING_MODE_CONTINUOUS) { |
| result.append(" continuous | "); |
| } else if (reportingMode == AREPORTING_MODE_ON_CHANGE) { |
| result.append(" on-change | "); |
| } else if (reportingMode == AREPORTING_MODE_ONE_SHOT) { |
| result.append(" one-shot | "); |
| } else { |
| result.append(" special-trigger | "); |
| } |
| |
| if (s.getMaxDelay() > 0) { |
| result.appendFormat("minRate=%.2fHz | ", 1e6f / s.getMaxDelay()); |
| } else { |
| result.appendFormat("maxDelay=%dus |", s.getMaxDelay()); |
| } |
| |
| if (s.getMinDelay() > 0) { |
| result.appendFormat("maxRate=%.2fHz | ", 1e6f / s.getMinDelay()); |
| } else { |
| result.appendFormat("minDelay=%dus |", s.getMinDelay()); |
| } |
| |
| if (s.getFifoMaxEventCount() > 0) { |
| result.appendFormat("FifoMax=%d events | ", |
| s.getFifoMaxEventCount()); |
| } else { |
| result.append("no batching | "); |
| } |
| |
| if (s.isWakeUpSensor()) { |
| result.appendFormat("wakeUp | "); |
| } else { |
| result.appendFormat("non-wakeUp | "); |
| } |
| |
| int bufIndex = mLastEventSeen.indexOfKey(s.getHandle()); |
| if (bufIndex >= 0) { |
| const MostRecentEventLogger* buf = mLastEventSeen.valueAt(bufIndex); |
| if (buf != NULL && s.getRequiredPermission().isEmpty()) { |
| buf->printBuffer(result); |
| } else { |
| result.append("last=<> \n"); |
| } |
| } |
| result.append("\n"); |
| } |
| SensorFusion::getInstance().dump(result); |
| SensorDevice::getInstance().dump(result); |
| |
| result.append("Active sensors:\n"); |
| for (size_t i=0 ; i<mActiveSensors.size() ; i++) { |
| int handle = mActiveSensors.keyAt(i); |
| result.appendFormat("%s (handle=0x%08x, connections=%zu)\n", |
| getSensorName(handle).string(), |
| handle, |
| mActiveSensors.valueAt(i)->getNumConnections()); |
| } |
| |
| result.appendFormat("Socket Buffer size = %zd events\n", |
| mSocketBufferSize/sizeof(sensors_event_t)); |
| result.appendFormat("WakeLock Status: %s \n", mWakeLockAcquired ? "acquired" : |
| "not held"); |
| result.appendFormat("Mode :"); |
| switch(mCurrentOperatingMode) { |
| case NORMAL: |
| result.appendFormat(" NORMAL\n"); |
| break; |
| case RESTRICTED: |
| result.appendFormat(" RESTRICTED : %s\n", mWhiteListedPackage.string()); |
| break; |
| case DATA_INJECTION: |
| result.appendFormat(" DATA_INJECTION : %s\n", mWhiteListedPackage.string()); |
| } |
| result.appendFormat("%zd active connections\n", mActiveConnections.size()); |
| |
| for (size_t i=0 ; i < mActiveConnections.size() ; i++) { |
| sp<SensorEventConnection> connection(mActiveConnections[i].promote()); |
| if (connection != 0) { |
| result.appendFormat("Connection Number: %zu \n", i); |
| connection->dump(result); |
| } |
| } |
| |
| result.appendFormat("Previous Registrations:\n"); |
| // Log in the reverse chronological order. |
| int currentIndex = (mNextSensorRegIndex - 1 + SENSOR_REGISTRATIONS_BUF_SIZE) % |
| SENSOR_REGISTRATIONS_BUF_SIZE; |
| const int startIndex = currentIndex; |
| do { |
| const SensorRegistrationInfo& reg_info = mLastNSensorRegistrations[currentIndex]; |
| if (SensorRegistrationInfo::isSentinel(reg_info)) { |
| // Ignore sentinel, proceed to next item. |
| currentIndex = (currentIndex - 1 + SENSOR_REGISTRATIONS_BUF_SIZE) % |
| SENSOR_REGISTRATIONS_BUF_SIZE; |
| continue; |
| } |
| if (reg_info.mActivated) { |
| result.appendFormat("%02d:%02d:%02d activated package=%s handle=0x%08x " |
| "samplingRate=%dus maxReportLatency=%dus\n", |
| reg_info.mHour, reg_info.mMin, reg_info.mSec, |
| reg_info.mPackageName.string(), reg_info.mSensorHandle, |
| reg_info.mSamplingRateUs, reg_info.mMaxReportLatencyUs); |
| } else { |
| result.appendFormat("%02d:%02d:%02d de-activated package=%s handle=0x%08x\n", |
| reg_info.mHour, reg_info.mMin, reg_info.mSec, |
| reg_info.mPackageName.string(), reg_info.mSensorHandle); |
| } |
| currentIndex = (currentIndex - 1 + SENSOR_REGISTRATIONS_BUF_SIZE) % |
| SENSOR_REGISTRATIONS_BUF_SIZE; |
| } while(startIndex != currentIndex); |
| } |
| } |
| write(fd, result.string(), result.size()); |
| return NO_ERROR; |
| } |
| |
| void SensorService::cleanupAutoDisabledSensorLocked(const sp<SensorEventConnection>& connection, |
| sensors_event_t const* buffer, const int count) { |
| for (int i=0 ; i<count ; i++) { |
| int handle = buffer[i].sensor; |
| if (buffer[i].type == SENSOR_TYPE_META_DATA) { |
| handle = buffer[i].meta_data.sensor; |
| } |
| if (connection->hasSensor(handle)) { |
| SensorInterface* sensor = mSensorMap.valueFor(handle); |
| // If this buffer has an event from a one_shot sensor and this connection is registered |
| // for this particular one_shot sensor, try cleaning up the connection. |
| if (sensor != NULL && |
| sensor->getSensor().getReportingMode() == AREPORTING_MODE_ONE_SHOT) { |
| sensor->autoDisable(connection.get(), handle); |
| cleanupWithoutDisableLocked(connection, handle); |
| } |
| |
| } |
| } |
| } |
| |
| bool SensorService::threadLoop() |
| { |
| ALOGD("nuSensorService thread starting..."); |
| |
| // each virtual sensor could generate an event per "real" event, that's why we need to size |
| // numEventMax much smaller than MAX_RECEIVE_BUFFER_EVENT_COUNT. in practice, this is too |
| // aggressive, but guaranteed to be enough. |
| const size_t minBufferSize = SensorEventQueue::MAX_RECEIVE_BUFFER_EVENT_COUNT; |
| const size_t numEventMax = minBufferSize / (1 + mVirtualSensorList.size()); |
| |
| SensorDevice& device(SensorDevice::getInstance()); |
| const size_t vcount = mVirtualSensorList.size(); |
| |
| const int halVersion = device.getHalDeviceVersion(); |
| do { |
| ssize_t count = device.poll(mSensorEventBuffer, numEventMax); |
| if (count < 0) { |
| ALOGE("sensor poll failed (%s)", strerror(-count)); |
| break; |
| } |
| |
| // Reset sensors_event_t.flags to zero for all events in the buffer. |
| for (int i = 0; i < count; i++) { |
| mSensorEventBuffer[i].flags = 0; |
| } |
| |
| // Make a copy of the connection vector as some connections may be removed during the course |
| // of this loop (especially when one-shot sensor events are present in the sensor_event |
| // buffer). Promote all connections to StrongPointers before the lock is acquired. If the |
| // destructor of the sp gets called when the lock is acquired, it may result in a deadlock |
| // as ~SensorEventConnection() needs to acquire mLock again for cleanup. So copy all the |
| // strongPointers to a vector before the lock is acquired. |
| SortedVector< sp<SensorEventConnection> > activeConnections; |
| populateActiveConnections(&activeConnections); |
| |
| Mutex::Autolock _l(mLock); |
| // Poll has returned. Hold a wakelock if one of the events is from a wake up sensor. The |
| // rest of this loop is under a critical section protected by mLock. Acquiring a wakeLock, |
| // sending events to clients (incrementing SensorEventConnection::mWakeLockRefCount) should |
| // not be interleaved with decrementing SensorEventConnection::mWakeLockRefCount and |
| // releasing the wakelock. |
| bool bufferHasWakeUpEvent = false; |
| for (int i = 0; i < count; i++) { |
| if (isWakeUpSensorEvent(mSensorEventBuffer[i])) { |
| bufferHasWakeUpEvent = true; |
| break; |
| } |
| } |
| |
| if (bufferHasWakeUpEvent && !mWakeLockAcquired) { |
| setWakeLockAcquiredLocked(true); |
| } |
| recordLastValueLocked(mSensorEventBuffer, count); |
| |
| // handle virtual sensors |
| if (count && vcount) { |
| sensors_event_t const * const event = mSensorEventBuffer; |
| const size_t activeVirtualSensorCount = mActiveVirtualSensors.size(); |
| if (activeVirtualSensorCount) { |
| size_t k = 0; |
| SensorFusion& fusion(SensorFusion::getInstance()); |
| if (fusion.isEnabled()) { |
| for (size_t i=0 ; i<size_t(count) ; i++) { |
| fusion.process(event[i]); |
| } |
| } |
| for (size_t i=0 ; i<size_t(count) && k<minBufferSize ; i++) { |
| for (size_t j=0 ; j<activeVirtualSensorCount ; j++) { |
| if (count + k >= minBufferSize) { |
| ALOGE("buffer too small to hold all events: " |
| "count=%zd, k=%zu, size=%zu", |
| count, k, minBufferSize); |
| break; |
| } |
| sensors_event_t out; |
| SensorInterface* si = mActiveVirtualSensors.valueAt(j); |
| if (si->process(&out, event[i])) { |
| mSensorEventBuffer[count + k] = out; |
| k++; |
| } |
| } |
| } |
| if (k) { |
| // record the last synthesized values |
| recordLastValueLocked(&mSensorEventBuffer[count], k); |
| count += k; |
| // sort the buffer by time-stamps |
| sortEventBuffer(mSensorEventBuffer, count); |
| } |
| } |
| } |
| |
| // handle backward compatibility for RotationVector sensor |
| if (halVersion < SENSORS_DEVICE_API_VERSION_1_0) { |
| for (int i = 0; i < count; i++) { |
| if (mSensorEventBuffer[i].type == SENSOR_TYPE_ROTATION_VECTOR) { |
| // All the 4 components of the quaternion should be available |
| // No heading accuracy. Set it to -1 |
| mSensorEventBuffer[i].data[4] = -1; |
| } |
| } |
| } |
| |
| for (int i = 0; i < count; ++i) { |
| // Map flush_complete_events in the buffer to SensorEventConnections which called flush on |
| // the hardware sensor. mapFlushEventsToConnections[i] will be the SensorEventConnection |
| // mapped to the corresponding flush_complete_event in mSensorEventBuffer[i] if such a |
| // mapping exists (NULL otherwise). |
| mMapFlushEventsToConnections[i] = NULL; |
| if (mSensorEventBuffer[i].type == SENSOR_TYPE_META_DATA) { |
| const int sensor_handle = mSensorEventBuffer[i].meta_data.sensor; |
| SensorRecord* rec = mActiveSensors.valueFor(sensor_handle); |
| if (rec != NULL) { |
| mMapFlushEventsToConnections[i] = rec->getFirstPendingFlushConnection(); |
| rec->removeFirstPendingFlushConnection(); |
| } |
| } |
| |
| // handle dynamic sensor meta events, process registration and unregistration of dynamic |
| // sensor based on content of event. |
| if (mSensorEventBuffer[i].type == SENSOR_TYPE_DYNAMIC_SENSOR_META) { |
| if (mSensorEventBuffer[i].dynamic_sensor_meta.connected) { |
| int handle = mSensorEventBuffer[i].dynamic_sensor_meta.handle; |
| const sensor_t& dynamicSensor = |
| *(mSensorEventBuffer[i].dynamic_sensor_meta.sensor); |
| ALOGI("Dynamic sensor handle 0x%x connected, type %d, name %s", |
| handle, dynamicSensor.type, dynamicSensor.name); |
| |
| device.handleDynamicSensorConnection(handle, true /*connected*/); |
| registerDynamicSensor(new HardwareSensor(dynamicSensor)); |
| |
| } else { |
| int handle = mSensorEventBuffer[i].dynamic_sensor_meta.handle; |
| ALOGI("Dynamic sensor handle 0x%x disconnected", handle); |
| |
| device.handleDynamicSensorConnection(handle, false /*connected*/); |
| if (!unregisterDynamicSensor(handle)) { |
| ALOGE("Dynamic sensor release error."); |
| } |
| |
| size_t numConnections = activeConnections.size(); |
| for (size_t i=0 ; i < numConnections; ++i) { |
| if (activeConnections[i] != NULL) { |
| activeConnections[i]->removeSensor(handle); |
| } |
| } |
| } |
| } |
| } |
| |
| |
| // Send our events to clients. Check the state of wake lock for each client and release the |
| // lock if none of the clients need it. |
| bool needsWakeLock = false; |
| size_t numConnections = activeConnections.size(); |
| for (size_t i=0 ; i < numConnections; ++i) { |
| if (activeConnections[i] != 0) { |
| activeConnections[i]->sendEvents(mSensorEventBuffer, count, mSensorEventScratch, |
| mMapFlushEventsToConnections); |
| needsWakeLock |= activeConnections[i]->needsWakeLock(); |
| // If the connection has one-shot sensors, it may be cleaned up after first trigger. |
| // Early check for one-shot sensors. |
| if (activeConnections[i]->hasOneShotSensors()) { |
| cleanupAutoDisabledSensorLocked(activeConnections[i], mSensorEventBuffer, |
| count); |
| } |
| } |
| } |
| |
| if (mWakeLockAcquired && !needsWakeLock) { |
| setWakeLockAcquiredLocked(false); |
| } |
| } while (!Thread::exitPending()); |
| |
| ALOGW("Exiting SensorService::threadLoop => aborting..."); |
| abort(); |
| return false; |
| } |
| |
| sp<Looper> SensorService::getLooper() const { |
| return mLooper; |
| } |
| |
| void SensorService::resetAllWakeLockRefCounts() { |
| SortedVector< sp<SensorEventConnection> > activeConnections; |
| populateActiveConnections(&activeConnections); |
| { |
| Mutex::Autolock _l(mLock); |
| for (size_t i=0 ; i < activeConnections.size(); ++i) { |
| if (activeConnections[i] != 0) { |
| activeConnections[i]->resetWakeLockRefCount(); |
| } |
| } |
| setWakeLockAcquiredLocked(false); |
| } |
| } |
| |
| void SensorService::setWakeLockAcquiredLocked(bool acquire) { |
| if (acquire) { |
| if (!mWakeLockAcquired) { |
| acquire_wake_lock(PARTIAL_WAKE_LOCK, WAKE_LOCK_NAME); |
| mWakeLockAcquired = true; |
| } |
| mLooper->wake(); |
| } else { |
| if (mWakeLockAcquired) { |
| release_wake_lock(WAKE_LOCK_NAME); |
| mWakeLockAcquired = false; |
| } |
| } |
| } |
| |
| bool SensorService::isWakeLockAcquired() { |
| Mutex::Autolock _l(mLock); |
| return mWakeLockAcquired; |
| } |
| |
| bool SensorService::SensorEventAckReceiver::threadLoop() { |
| ALOGD("new thread SensorEventAckReceiver"); |
| sp<Looper> looper = mService->getLooper(); |
| do { |
| bool wakeLockAcquired = mService->isWakeLockAcquired(); |
| int timeout = -1; |
| if (wakeLockAcquired) timeout = 5000; |
| int ret = looper->pollOnce(timeout); |
| if (ret == ALOOPER_POLL_TIMEOUT) { |
| mService->resetAllWakeLockRefCounts(); |
| } |
| } while(!Thread::exitPending()); |
| return false; |
| } |
| |
| void SensorService::recordLastValueLocked( |
| const sensors_event_t* buffer, size_t count) { |
| for (size_t i = 0; i < count; i++) { |
| if (buffer[i].type == SENSOR_TYPE_META_DATA || |
| buffer[i].type == SENSOR_TYPE_DYNAMIC_SENSOR_META || |
| buffer[i].type == SENSOR_TYPE_ADDITIONAL_INFO || |
| mLastEventSeen.indexOfKey(buffer[i].sensor) <0 ) { |
| continue; |
| } |
| |
| MostRecentEventLogger* &circular_buf = mLastEventSeen.editValueFor(buffer[i].sensor); |
| if (circular_buf == NULL) { |
| circular_buf = new MostRecentEventLogger(buffer[i].type); |
| } |
| circular_buf->addEvent(buffer[i]); |
| } |
| } |
| |
| void SensorService::sortEventBuffer(sensors_event_t* buffer, size_t count) |
| { |
| struct compar { |
| static int cmp(void const* lhs, void const* rhs) { |
| sensors_event_t const* l = static_cast<sensors_event_t const*>(lhs); |
| sensors_event_t const* r = static_cast<sensors_event_t const*>(rhs); |
| return l->timestamp - r->timestamp; |
| } |
| }; |
| qsort(buffer, count, sizeof(sensors_event_t), compar::cmp); |
| } |
| |
| String8 SensorService::getSensorName(int handle) const { |
| size_t count = mUserSensorList.size(); |
| for (size_t i=0 ; i<count ; i++) { |
| const Sensor& sensor(mUserSensorList[i]); |
| if (sensor.getHandle() == handle) { |
| return sensor.getName(); |
| } |
| } |
| String8 result("unknown"); |
| return result; |
| } |
| |
| bool SensorService::isVirtualSensor(int handle) const { |
| SensorInterface* sensor = mSensorMap.valueFor(handle); |
| return sensor != NULL && sensor->isVirtual(); |
| } |
| |
| bool SensorService::isWakeUpSensorEvent(const sensors_event_t& event) const { |
| int handle = event.sensor; |
| if (event.type == SENSOR_TYPE_META_DATA) { |
| handle = event.meta_data.sensor; |
| } |
| SensorInterface* sensor = mSensorMap.valueFor(handle); |
| return sensor != NULL && sensor->getSensor().isWakeUpSensor(); |
| } |
| |
| SensorService::SensorRecord * SensorService::getSensorRecord(int handle) { |
| return mActiveSensors.valueFor(handle); |
| } |
| |
| Vector<Sensor> SensorService::getSensorList(const String16& opPackageName) |
| { |
| char value[PROPERTY_VALUE_MAX]; |
| property_get("debug.sensors", value, "0"); |
| const Vector<Sensor>& initialSensorList = (atoi(value)) ? |
| mUserSensorListDebug : mUserSensorList; |
| Vector<Sensor> accessibleSensorList; |
| for (size_t i = 0; i < initialSensorList.size(); i++) { |
| Sensor sensor = initialSensorList[i]; |
| if (canAccessSensor(sensor, "getSensorList", opPackageName)) { |
| accessibleSensorList.add(sensor); |
| } else { |
| ALOGI("Skipped sensor %s because it requires permission %s and app op %d", |
| sensor.getName().string(), |
| sensor.getRequiredPermission().string(), |
| sensor.getRequiredAppOp()); |
| } |
| } |
| return accessibleSensorList; |
| } |
| |
| Vector<Sensor> SensorService::getDynamicSensorList(const String16& opPackageName) |
| { |
| Vector<Sensor> accessibleSensorList; |
| for (size_t i = 0; i < mDynamicSensorList.size(); i++) { |
| Sensor sensor = mDynamicSensorList[i]; |
| if (canAccessSensor(sensor, "getDynamicSensorList", opPackageName)) { |
| accessibleSensorList.add(sensor); |
| } else { |
| ALOGI("Skipped sensor %s because it requires permission %s and app op %d", |
| sensor.getName().string(), |
| sensor.getRequiredPermission().string(), |
| sensor.getRequiredAppOp()); |
| } |
| } |
| return accessibleSensorList; |
| } |
| |
| sp<ISensorEventConnection> SensorService::createSensorEventConnection(const String8& packageName, |
| int requestedMode, const String16& opPackageName) { |
| // Only 2 modes supported for a SensorEventConnection ... NORMAL and DATA_INJECTION. |
| if (requestedMode != NORMAL && requestedMode != DATA_INJECTION) { |
| return NULL; |
| } |
| |
| Mutex::Autolock _l(mLock); |
| // To create a client in DATA_INJECTION mode to inject data, SensorService should already be |
| // operating in DI mode. |
| if (requestedMode == DATA_INJECTION) { |
| if (mCurrentOperatingMode != DATA_INJECTION) return NULL; |
| if (!isWhiteListedPackage(packageName)) return NULL; |
| } |
| |
| uid_t uid = IPCThreadState::self()->getCallingUid(); |
| sp<SensorEventConnection> result(new SensorEventConnection(this, uid, packageName, |
| requestedMode == DATA_INJECTION, opPackageName)); |
| if (requestedMode == DATA_INJECTION) { |
| if (mActiveConnections.indexOf(result) < 0) { |
| mActiveConnections.add(result); |
| } |
| // Add the associated file descriptor to the Looper for polling whenever there is data to |
| // be injected. |
| result->updateLooperRegistration(mLooper); |
| } |
| return result; |
| } |
| |
| int SensorService::isDataInjectionEnabled() { |
| Mutex::Autolock _l(mLock); |
| return (mCurrentOperatingMode == DATA_INJECTION); |
| } |
| |
| status_t SensorService::resetToNormalMode() { |
| Mutex::Autolock _l(mLock); |
| return resetToNormalModeLocked(); |
| } |
| |
| status_t SensorService::resetToNormalModeLocked() { |
| SensorDevice& dev(SensorDevice::getInstance()); |
| dev.enableAllSensors(); |
| status_t err = dev.setMode(NORMAL); |
| mCurrentOperatingMode = NORMAL; |
| return err; |
| } |
| |
| void SensorService::cleanupConnection(SensorEventConnection* c) |
| { |
| Mutex::Autolock _l(mLock); |
| const wp<SensorEventConnection> connection(c); |
| size_t size = mActiveSensors.size(); |
| ALOGD_IF(DEBUG_CONNECTIONS, "%zu active sensors", size); |
| for (size_t i=0 ; i<size ; ) { |
| int handle = mActiveSensors.keyAt(i); |
| if (c->hasSensor(handle)) { |
| ALOGD_IF(DEBUG_CONNECTIONS, "%zu: disabling handle=0x%08x", i, handle); |
| SensorInterface* sensor = mSensorMap.valueFor( handle ); |
| ALOGE_IF(!sensor, "mSensorMap[handle=0x%08x] is null!", handle); |
| if (sensor) { |
| sensor->activate(c, false); |
| } |
| c->removeSensor(handle); |
| } |
| SensorRecord* rec = mActiveSensors.valueAt(i); |
| ALOGE_IF(!rec, "mActiveSensors[%zu] is null (handle=0x%08x)!", i, handle); |
| ALOGD_IF(DEBUG_CONNECTIONS, |
| "removing connection %p for sensor[%zu].handle=0x%08x", |
| c, i, handle); |
| |
| if (rec && rec->removeConnection(connection)) { |
| ALOGD_IF(DEBUG_CONNECTIONS, "... and it was the last connection"); |
| mActiveSensors.removeItemsAt(i, 1); |
| mActiveVirtualSensors.removeItem(handle); |
| delete rec; |
| size--; |
| } else { |
| i++; |
| } |
| } |
| c->updateLooperRegistration(mLooper); |
| mActiveConnections.remove(connection); |
| BatteryService::cleanup(c->getUid()); |
| if (c->needsWakeLock()) { |
| checkWakeLockStateLocked(); |
| } |
| } |
| |
| Sensor SensorService::getSensorFromHandle(int handle) const { |
| return mSensorMap.valueFor(handle)->getSensor(); |
| } |
| |
| status_t SensorService::enable(const sp<SensorEventConnection>& connection, |
| int handle, nsecs_t samplingPeriodNs, nsecs_t maxBatchReportLatencyNs, int reservedFlags, |
| const String16& opPackageName) |
| { |
| if (mInitCheck != NO_ERROR) |
| return mInitCheck; |
| |
| SensorInterface* sensor = mSensorMap.valueFor(handle); |
| if (sensor == NULL) { |
| return BAD_VALUE; |
| } |
| |
| if (!canAccessSensor(sensor->getSensor(), "Tried enabling", opPackageName)) { |
| return BAD_VALUE; |
| } |
| |
| Mutex::Autolock _l(mLock); |
| if ((mCurrentOperatingMode == RESTRICTED || mCurrentOperatingMode == DATA_INJECTION) |
| && !isWhiteListedPackage(connection->getPackageName())) { |
| return INVALID_OPERATION; |
| } |
| |
| SensorRecord* rec = mActiveSensors.valueFor(handle); |
| if (rec == 0) { |
| rec = new SensorRecord(connection); |
| mActiveSensors.add(handle, rec); |
| if (sensor->isVirtual()) { |
| mActiveVirtualSensors.add(handle, sensor); |
| } |
| } else { |
| if (rec->addConnection(connection)) { |
| // this sensor is already activated, but we are adding a connection that uses it. |
| // Immediately send down the last known value of the requested sensor if it's not a |
| // "continuous" sensor. |
| if (sensor->getSensor().getReportingMode() == AREPORTING_MODE_ON_CHANGE) { |
| // NOTE: The wake_up flag of this event may get set to |
| // WAKE_UP_SENSOR_EVENT_NEEDS_ACK if this is a wake_up event. |
| MostRecentEventLogger *circular_buf = mLastEventSeen.valueFor(handle); |
| if (circular_buf) { |
| sensors_event_t event; |
| memset(&event, 0, sizeof(event)); |
| // It is unlikely that this buffer is empty as the sensor is already active. |
| // One possible corner case may be two applications activating an on-change |
| // sensor at the same time. |
| if(circular_buf->populateLastEvent(&event)) { |
| event.sensor = handle; |
| if (event.version == sizeof(sensors_event_t)) { |
| if (isWakeUpSensorEvent(event) && !mWakeLockAcquired) { |
| setWakeLockAcquiredLocked(true); |
| } |
| connection->sendEvents(&event, 1, NULL); |
| if (!connection->needsWakeLock() && mWakeLockAcquired) { |
| checkWakeLockStateLocked(); |
| } |
| } |
| } |
| } |
| } |
| } |
| } |
| |
| if (connection->addSensor(handle)) { |
| BatteryService::enableSensor(connection->getUid(), handle); |
| // the sensor was added (which means it wasn't already there) |
| // so, see if this connection becomes active |
| if (mActiveConnections.indexOf(connection) < 0) { |
| mActiveConnections.add(connection); |
| } |
| } else { |
| ALOGW("sensor %08x already enabled in connection %p (ignoring)", |
| handle, connection.get()); |
| } |
| |
| nsecs_t minDelayNs = sensor->getSensor().getMinDelayNs(); |
| if (samplingPeriodNs < minDelayNs) { |
| samplingPeriodNs = minDelayNs; |
| } |
| |
| ALOGD_IF(DEBUG_CONNECTIONS, "Calling batch handle==%d flags=%d" |
| "rate=%" PRId64 " timeout== %" PRId64"", |
| handle, reservedFlags, samplingPeriodNs, maxBatchReportLatencyNs); |
| |
| status_t err = sensor->batch(connection.get(), handle, 0, samplingPeriodNs, |
| maxBatchReportLatencyNs); |
| |
| // Call flush() before calling activate() on the sensor. Wait for a first |
| // flush complete event before sending events on this connection. Ignore |
| // one-shot sensors which don't support flush(). Ignore on-change sensors |
| // to maintain the on-change logic (any on-change events except the initial |
| // one should be trigger by a change in value). Also if this sensor isn't |
| // already active, don't call flush(). |
| if (err == NO_ERROR && |
| sensor->getSensor().getReportingMode() == AREPORTING_MODE_CONTINUOUS && |
| rec->getNumConnections() > 1) { |
| connection->setFirstFlushPending(handle, true); |
| status_t err_flush = sensor->flush(connection.get(), handle); |
| // Flush may return error if the underlying h/w sensor uses an older HAL. |
| if (err_flush == NO_ERROR) { |
| rec->addPendingFlushConnection(connection.get()); |
| } else { |
| connection->setFirstFlushPending(handle, false); |
| } |
| } |
| |
| if (err == NO_ERROR) { |
| ALOGD_IF(DEBUG_CONNECTIONS, "Calling activate on %d", handle); |
| err = sensor->activate(connection.get(), true); |
| } |
| |
| if (err == NO_ERROR) { |
| connection->updateLooperRegistration(mLooper); |
| SensorRegistrationInfo ®_info = |
| mLastNSensorRegistrations.editItemAt(mNextSensorRegIndex); |
| reg_info.mSensorHandle = handle; |
| reg_info.mSamplingRateUs = samplingPeriodNs/1000; |
| reg_info.mMaxReportLatencyUs = maxBatchReportLatencyNs/1000; |
| reg_info.mActivated = true; |
| reg_info.mPackageName = connection->getPackageName(); |
| time_t rawtime = time(NULL); |
| struct tm * timeinfo = localtime(&rawtime); |
| reg_info.mHour = timeinfo->tm_hour; |
| reg_info.mMin = timeinfo->tm_min; |
| reg_info.mSec = timeinfo->tm_sec; |
| mNextSensorRegIndex = (mNextSensorRegIndex + 1) % SENSOR_REGISTRATIONS_BUF_SIZE; |
| } |
| |
| if (err != NO_ERROR) { |
| // batch/activate has failed, reset our state. |
| cleanupWithoutDisableLocked(connection, handle); |
| } |
| return err; |
| } |
| |
| status_t SensorService::disable(const sp<SensorEventConnection>& connection, |
| int handle) |
| { |
| if (mInitCheck != NO_ERROR) |
| return mInitCheck; |
| |
| Mutex::Autolock _l(mLock); |
| status_t err = cleanupWithoutDisableLocked(connection, handle); |
| if (err == NO_ERROR) { |
| SensorInterface* sensor = mSensorMap.valueFor(handle); |
| err = sensor ? sensor->activate(connection.get(), false) : status_t(BAD_VALUE); |
| |
| } |
| if (err == NO_ERROR) { |
| SensorRegistrationInfo ®_info = |
| mLastNSensorRegistrations.editItemAt(mNextSensorRegIndex); |
| reg_info.mActivated = false; |
| reg_info.mPackageName= connection->getPackageName(); |
| reg_info.mSensorHandle = handle; |
| time_t rawtime = time(NULL); |
| struct tm * timeinfo = localtime(&rawtime); |
| reg_info.mHour = timeinfo->tm_hour; |
| reg_info.mMin = timeinfo->tm_min; |
| reg_info.mSec = timeinfo->tm_sec; |
| mNextSensorRegIndex = (mNextSensorRegIndex + 1) % SENSOR_REGISTRATIONS_BUF_SIZE; |
| } |
| return err; |
| } |
| |
| status_t SensorService::cleanupWithoutDisable( |
| const sp<SensorEventConnection>& connection, int handle) { |
| Mutex::Autolock _l(mLock); |
| return cleanupWithoutDisableLocked(connection, handle); |
| } |
| |
| status_t SensorService::cleanupWithoutDisableLocked( |
| const sp<SensorEventConnection>& connection, int handle) { |
| SensorRecord* rec = mActiveSensors.valueFor(handle); |
| if (rec) { |
| // see if this connection becomes inactive |
| if (connection->removeSensor(handle)) { |
| BatteryService::disableSensor(connection->getUid(), handle); |
| } |
| if (connection->hasAnySensor() == false) { |
| connection->updateLooperRegistration(mLooper); |
| mActiveConnections.remove(connection); |
| } |
| // see if this sensor becomes inactive |
| if (rec->removeConnection(connection)) { |
| mActiveSensors.removeItem(handle); |
| mActiveVirtualSensors.removeItem(handle); |
| delete rec; |
| } |
| return NO_ERROR; |
| } |
| return BAD_VALUE; |
| } |
| |
| status_t SensorService::setEventRate(const sp<SensorEventConnection>& connection, |
| int handle, nsecs_t ns, const String16& opPackageName) |
| { |
| if (mInitCheck != NO_ERROR) |
| return mInitCheck; |
| |
| SensorInterface* sensor = mSensorMap.valueFor(handle); |
| if (!sensor) |
| return BAD_VALUE; |
| |
| if (!canAccessSensor(sensor->getSensor(), "Tried configuring", opPackageName)) { |
| return BAD_VALUE; |
| } |
| |
| if (ns < 0) |
| return BAD_VALUE; |
| |
| nsecs_t minDelayNs = sensor->getSensor().getMinDelayNs(); |
| if (ns < minDelayNs) { |
| ns = minDelayNs; |
| } |
| |
| return sensor->setDelay(connection.get(), handle, ns); |
| } |
| |
| status_t SensorService::flushSensor(const sp<SensorEventConnection>& connection, |
| const String16& opPackageName) { |
| if (mInitCheck != NO_ERROR) return mInitCheck; |
| SensorDevice& dev(SensorDevice::getInstance()); |
| const int halVersion = dev.getHalDeviceVersion(); |
| status_t err(NO_ERROR); |
| Mutex::Autolock _l(mLock); |
| // Loop through all sensors for this connection and call flush on each of them. |
| for (size_t i = 0; i < connection->mSensorInfo.size(); ++i) { |
| const int handle = connection->mSensorInfo.keyAt(i); |
| SensorInterface* sensor = mSensorMap.valueFor(handle); |
| if (sensor->getSensor().getReportingMode() == AREPORTING_MODE_ONE_SHOT) { |
| ALOGE("flush called on a one-shot sensor"); |
| err = INVALID_OPERATION; |
| continue; |
| } |
| if (halVersion <= SENSORS_DEVICE_API_VERSION_1_0 || isVirtualSensor(handle)) { |
| // For older devices just increment pending flush count which will send a trivial |
| // flush complete event. |
| connection->incrementPendingFlushCount(handle); |
| } else { |
| if (!canAccessSensor(sensor->getSensor(), "Tried flushing", opPackageName)) { |
| err = INVALID_OPERATION; |
| continue; |
| } |
| status_t err_flush = sensor->flush(connection.get(), handle); |
| if (err_flush == NO_ERROR) { |
| SensorRecord* rec = mActiveSensors.valueFor(handle); |
| if (rec != NULL) rec->addPendingFlushConnection(connection); |
| } |
| err = (err_flush != NO_ERROR) ? err_flush : err; |
| } |
| } |
| return err; |
| } |
| |
| bool SensorService::canAccessSensor(const Sensor& sensor, const char* operation, |
| const String16& opPackageName) { |
| const String8& requiredPermission = sensor.getRequiredPermission(); |
| |
| if (requiredPermission.length() <= 0) { |
| return true; |
| } |
| |
| bool hasPermission = false; |
| |
| // Runtime permissions can't use the cache as they may change. |
| if (sensor.isRequiredPermissionRuntime()) { |
| hasPermission = checkPermission(String16(requiredPermission), |
| IPCThreadState::self()->getCallingPid(), IPCThreadState::self()->getCallingUid()); |
| } else { |
| hasPermission = PermissionCache::checkCallingPermission(String16(requiredPermission)); |
| } |
| |
| if (!hasPermission) { |
| ALOGE("%s a sensor (%s) without holding its required permission: %s", |
| operation, sensor.getName().string(), sensor.getRequiredPermission().string()); |
| return false; |
| } |
| |
| const int32_t opCode = sensor.getRequiredAppOp(); |
| if (opCode >= 0) { |
| AppOpsManager appOps; |
| if (appOps.noteOp(opCode, IPCThreadState::self()->getCallingUid(), opPackageName) |
| != AppOpsManager::MODE_ALLOWED) { |
| ALOGE("%s a sensor (%s) without enabled required app op: %d", |
| operation, sensor.getName().string(), opCode); |
| return false; |
| } |
| } |
| |
| return true; |
| } |
| |
| void SensorService::checkWakeLockState() { |
| Mutex::Autolock _l(mLock); |
| checkWakeLockStateLocked(); |
| } |
| |
| void SensorService::checkWakeLockStateLocked() { |
| if (!mWakeLockAcquired) { |
| return; |
| } |
| bool releaseLock = true; |
| for (size_t i=0 ; i<mActiveConnections.size() ; i++) { |
| sp<SensorEventConnection> connection(mActiveConnections[i].promote()); |
| if (connection != 0) { |
| if (connection->needsWakeLock()) { |
| releaseLock = false; |
| break; |
| } |
| } |
| } |
| if (releaseLock) { |
| setWakeLockAcquiredLocked(false); |
| } |
| } |
| |
| void SensorService::sendEventsFromCache(const sp<SensorEventConnection>& connection) { |
| Mutex::Autolock _l(mLock); |
| connection->writeToSocketFromCache(); |
| if (connection->needsWakeLock()) { |
| setWakeLockAcquiredLocked(true); |
| } |
| } |
| |
| void SensorService::populateActiveConnections( |
| SortedVector< sp<SensorEventConnection> >* activeConnections) { |
| Mutex::Autolock _l(mLock); |
| for (size_t i=0 ; i < mActiveConnections.size(); ++i) { |
| sp<SensorEventConnection> connection(mActiveConnections[i].promote()); |
| if (connection != 0) { |
| activeConnections->add(connection); |
| } |
| } |
| } |
| |
| bool SensorService::isWhiteListedPackage(const String8& packageName) { |
| return (packageName.contains(mWhiteListedPackage.string())); |
| } |
| |
| int SensorService::getNumEventsForSensorType(int sensor_event_type) { |
| switch (sensor_event_type) { |
| case SENSOR_TYPE_ROTATION_VECTOR: |
| case SENSOR_TYPE_GEOMAGNETIC_ROTATION_VECTOR: |
| return 5; |
| |
| case SENSOR_TYPE_MAGNETIC_FIELD_UNCALIBRATED: |
| case SENSOR_TYPE_GYROSCOPE_UNCALIBRATED: |
| return 6; |
| |
| case SENSOR_TYPE_GAME_ROTATION_VECTOR: |
| return 4; |
| |
| case SENSOR_TYPE_SIGNIFICANT_MOTION: |
| case SENSOR_TYPE_STEP_DETECTOR: |
| case SENSOR_TYPE_STEP_COUNTER: |
| return 1; |
| |
| default: |
| return 3; |
| } |
| } |
| |
| }; // namespace android |
| |