| /* |
| * 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 <inttypes.h> |
| #include <math.h> |
| #include <stdint.h> |
| #include <sys/types.h> |
| |
| #include <cutils/properties.h> |
| |
| #include <utils/SortedVector.h> |
| #include <utils/KeyedVector.h> |
| #include <utils/threads.h> |
| #include <utils/Atomic.h> |
| #include <utils/Errors.h> |
| #include <utils/RefBase.h> |
| #include <utils/Singleton.h> |
| #include <utils/String16.h> |
| |
| #include <binder/BinderService.h> |
| #include <binder/IServiceManager.h> |
| #include <binder/PermissionCache.h> |
| |
| #include <gui/ISensorServer.h> |
| #include <gui/ISensorEventConnection.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" |
| |
| 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"; |
| |
| SensorService::SensorService() |
| : mInitCheck(NO_INIT) |
| { |
| } |
| |
| 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; |
| uint32_t virtualSensorsNeeds = |
| (1<<SENSOR_TYPE_GRAVITY) | |
| (1<<SENSOR_TYPE_LINEAR_ACCELERATION) | |
| (1<<SENSOR_TYPE_ROTATION_VECTOR); |
| |
| mLastEventSeen.setCapacity(count); |
| for (ssize_t i=0 ; i<count ; i++) { |
| registerSensor( new HardwareSensor(list[i]) ); |
| switch (list[i].type) { |
| 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: |
| virtualSensorsNeeds &= ~(1<<list[i].type); |
| break; |
| } |
| } |
| |
| // it's safe to instantiate the SensorFusion object here |
| // (it wants to be instantiated after h/w sensors have been |
| // registered) |
| const SensorFusion& fusion(SensorFusion::getInstance()); |
| |
| // build the sensor list returned to users |
| mUserSensorList = mSensorList; |
| |
| if (hasGyro) { |
| Sensor aSensor; |
| |
| // Add Android virtual sensors if they're not already |
| // available in the HAL |
| |
| aSensor = registerVirtualSensor( new RotationVectorSensor() ); |
| if (virtualSensorsNeeds & (1<<SENSOR_TYPE_ROTATION_VECTOR)) { |
| mUserSensorList.add(aSensor); |
| } |
| |
| aSensor = registerVirtualSensor( new GravitySensor(list, count) ); |
| if (virtualSensorsNeeds & (1<<SENSOR_TYPE_GRAVITY)) { |
| mUserSensorList.add(aSensor); |
| } |
| |
| aSensor = registerVirtualSensor( new LinearAccelerationSensor(list, count) ); |
| if (virtualSensorsNeeds & (1<<SENSOR_TYPE_LINEAR_ACCELERATION)) { |
| 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); |
| } |
| |
| // virtual debugging sensors are not added to mUserSensorList |
| registerVirtualSensor( new CorrectedGyroSensor(list, count) ); |
| registerVirtualSensor( new GyroDriftSensor() ); |
| } |
| |
| // debugging sensor list |
| mUserSensorListDebug = mSensorList; |
| |
| mSocketBufferSize = SOCKET_BUFFER_SIZE_NON_BATCHED; |
| 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'; |
| sscanf(line, "%zu", &mSocketBufferSize); |
| if (mSocketBufferSize > MAX_SOCKET_BUFFER_SIZE_BATCHED) { |
| mSocketBufferSize = MAX_SOCKET_BUFFER_SIZE_BATCHED; |
| } |
| } |
| ALOGD("Max socket buffer size %u", mSocketBufferSize); |
| if (fp) { |
| fclose(fp); |
| } |
| |
| run("SensorService", PRIORITY_URGENT_DISPLAY); |
| mInitCheck = NO_ERROR; |
| } |
| } |
| } |
| |
| Sensor SensorService::registerSensor(SensorInterface* s) |
| { |
| sensors_event_t event; |
| memset(&event, 0, sizeof(event)); |
| |
| 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(), event); |
| |
| return sensor; |
| } |
| |
| 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); |
| } |
| |
| static const String16 sDump("android.permission.DUMP"); |
| |
| status_t SensorService::dump(int fd, const Vector<String16>& /*args*/) |
| { |
| String8 result; |
| if (!PermissionCache::checkCallingPermission(sDump)) { |
| result.appendFormat("Permission Denial: " |
| "can't dump SurfaceFlinger from pid=%d, uid=%d\n", |
| IPCThreadState::self()->getCallingPid(), |
| IPCThreadState::self()->getCallingUid()); |
| } else { |
| Mutex::Autolock _l(mLock); |
| result.append("Sensor List:\n"); |
| for (size_t i=0 ; i<mSensorList.size() ; i++) { |
| const Sensor& s(mSensorList[i]); |
| const sensors_event_t& e(mLastEventSeen.valueFor(s.getHandle())); |
| result.appendFormat( |
| "%-48s| %-32s | 0x%08x | ", |
| s.getName().string(), |
| s.getVendor().string(), |
| s.getHandle()); |
| |
| if (s.getMinDelay() > 0) { |
| result.appendFormat( |
| "maxRate=%7.2fHz | ", 1e6f / s.getMinDelay()); |
| } else { |
| result.append(s.getMinDelay() == 0 |
| ? "on-demand | " |
| : "one-shot | "); |
| } |
| if (s.getFifoMaxEventCount() > 0) { |
| result.appendFormat("getFifoMaxEventCount=%d events | ", s.getFifoMaxEventCount()); |
| } else { |
| result.append("no batching support | "); |
| } |
| |
| switch (s.getType()) { |
| case SENSOR_TYPE_ROTATION_VECTOR: |
| case SENSOR_TYPE_GEOMAGNETIC_ROTATION_VECTOR: |
| result.appendFormat( |
| "last=<%5.1f,%5.1f,%5.1f,%5.1f,%5.1f>\n", |
| e.data[0], e.data[1], e.data[2], e.data[3], e.data[4]); |
| break; |
| case SENSOR_TYPE_MAGNETIC_FIELD_UNCALIBRATED: |
| case SENSOR_TYPE_GYROSCOPE_UNCALIBRATED: |
| result.appendFormat( |
| "last=<%5.1f,%5.1f,%5.1f,%5.1f,%5.1f,%5.1f>\n", |
| e.data[0], e.data[1], e.data[2], e.data[3], e.data[4], e.data[5]); |
| break; |
| case SENSOR_TYPE_GAME_ROTATION_VECTOR: |
| result.appendFormat( |
| "last=<%5.1f,%5.1f,%5.1f,%5.1f>\n", |
| e.data[0], e.data[1], e.data[2], e.data[3]); |
| break; |
| case SENSOR_TYPE_SIGNIFICANT_MOTION: |
| case SENSOR_TYPE_STEP_DETECTOR: |
| result.appendFormat( "last=<%f>\n", e.data[0]); |
| break; |
| case SENSOR_TYPE_STEP_COUNTER: |
| result.appendFormat( "last=<%" PRIu64 ">\n", e.u64.step_counter); |
| break; |
| default: |
| // default to 3 values |
| result.appendFormat( |
| "last=<%5.1f,%5.1f,%5.1f>\n", |
| e.data[0], e.data[1], e.data[2]); |
| break; |
| } |
| } |
| 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("%zu Max Socket Buffer size\n", mSocketBufferSize); |
| 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); |
| } |
| } |
| } |
| write(fd, result.string(), result.size()); |
| return NO_ERROR; |
| } |
| |
| void SensorService::cleanupAutoDisabledSensor(const sp<SensorEventConnection>& connection, |
| sensors_event_t const* buffer, const int count) { |
| SensorInterface* sensor; |
| status_t err = NO_ERROR; |
| for (int i=0 ; i<count ; i++) { |
| int handle = buffer[i].sensor; |
| int type = buffer[i].type; |
| if (type == SENSOR_TYPE_SIGNIFICANT_MOTION) { |
| if (connection->hasSensor(handle)) { |
| sensor = mSensorMap.valueFor(handle); |
| if (sensor != NULL) { |
| sensor->autoDisable(connection.get(), handle); |
| } |
| cleanupWithoutDisable(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()); |
| |
| sensors_event_t buffer[minBufferSize]; |
| sensors_event_t scratch[minBufferSize]; |
| SensorDevice& device(SensorDevice::getInstance()); |
| const size_t vcount = mVirtualSensorList.size(); |
| |
| ssize_t count; |
| bool wakeLockAcquired = false; |
| const int halVersion = device.getHalDeviceVersion(); |
| do { |
| count = device.poll(buffer, numEventMax); |
| if (count<0) { |
| ALOGE("sensor poll failed (%s)", strerror(-count)); |
| break; |
| } |
| |
| // Poll has returned. Hold a wakelock. |
| // Todo(): add a flag to the sensors definitions to indicate |
| // the sensors which can wake up the AP |
| for (int i = 0; i < count; i++) { |
| if (buffer[i].type == SENSOR_TYPE_SIGNIFICANT_MOTION) { |
| acquire_wake_lock(PARTIAL_WAKE_LOCK, WAKE_LOCK_NAME); |
| wakeLockAcquired = true; |
| break; |
| } |
| } |
| |
| recordLastValue(buffer, count); |
| |
| // handle virtual sensors |
| if (count && vcount) { |
| sensors_event_t const * const event = buffer; |
| const DefaultKeyedVector<int, SensorInterface*> virtualSensors( |
| getActiveVirtualSensors()); |
| const size_t activeVirtualSensorCount = virtualSensors.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=%u, k=%u, size=%u", |
| count, k, minBufferSize); |
| break; |
| } |
| sensors_event_t out; |
| SensorInterface* si = virtualSensors.valueAt(j); |
| if (si->process(&out, event[i])) { |
| buffer[count + k] = out; |
| k++; |
| } |
| } |
| } |
| if (k) { |
| // record the last synthesized values |
| recordLastValue(&buffer[count], k); |
| count += k; |
| // sort the buffer by time-stamps |
| sortEventBuffer(buffer, count); |
| } |
| } |
| } |
| |
| // handle backward compatibility for RotationVector sensor |
| if (halVersion < SENSORS_DEVICE_API_VERSION_1_0) { |
| for (int i = 0; i < count; i++) { |
| if (buffer[i].type == SENSOR_TYPE_ROTATION_VECTOR) { |
| // All the 4 components of the quaternion should be available |
| // No heading accuracy. Set it to -1 |
| buffer[i].data[4] = -1; |
| } |
| } |
| } |
| |
| // send our events to clients... |
| const SortedVector< wp<SensorEventConnection> > activeConnections( |
| getActiveConnections()); |
| size_t numConnections = activeConnections.size(); |
| for (size_t i=0 ; i<numConnections ; i++) { |
| sp<SensorEventConnection> connection( |
| activeConnections[i].promote()); |
| if (connection != 0) { |
| connection->sendEvents(buffer, count, scratch); |
| // Some sensors need to be auto disabled after the trigger |
| cleanupAutoDisabledSensor(connection, buffer, count); |
| } |
| } |
| |
| // We have read the data, upper layers should hold the wakelock. |
| if (wakeLockAcquired) release_wake_lock(WAKE_LOCK_NAME); |
| } while (count >= 0 || Thread::exitPending()); |
| |
| ALOGW("Exiting SensorService::threadLoop => aborting..."); |
| abort(); |
| return false; |
| } |
| |
| void SensorService::recordLastValue( |
| sensors_event_t const * buffer, size_t count) |
| { |
| Mutex::Autolock _l(mLock); |
| // record the last event for each sensor |
| int32_t prev = buffer[0].sensor; |
| for (size_t i=1 ; i<count ; i++) { |
| // record the last event of each sensor type in this buffer |
| int32_t curr = buffer[i].sensor; |
| if (curr != prev) { |
| mLastEventSeen.editValueFor(prev) = buffer[i-1]; |
| prev = curr; |
| } |
| } |
| mLastEventSeen.editValueFor(prev) = buffer[count-1]; |
| } |
| |
| 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); |
| } |
| |
| SortedVector< wp<SensorService::SensorEventConnection> > |
| SensorService::getActiveConnections() const |
| { |
| Mutex::Autolock _l(mLock); |
| return mActiveConnections; |
| } |
| |
| DefaultKeyedVector<int, SensorInterface*> |
| SensorService::getActiveVirtualSensors() const |
| { |
| Mutex::Autolock _l(mLock); |
| return mActiveVirtualSensors; |
| } |
| |
| 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->isVirtual(); |
| } |
| |
| Vector<Sensor> SensorService::getSensorList() |
| { |
| char value[PROPERTY_VALUE_MAX]; |
| property_get("debug.sensors", value, "0"); |
| if (atoi(value)) { |
| return mUserSensorListDebug; |
| } |
| return mUserSensorList; |
| } |
| |
| sp<ISensorEventConnection> SensorService::createSensorEventConnection() |
| { |
| uid_t uid = IPCThreadState::self()->getCallingUid(); |
| sp<SensorEventConnection> result(new SensorEventConnection(this, uid)); |
| return result; |
| } |
| |
| void SensorService::cleanupConnection(SensorEventConnection* c) |
| { |
| Mutex::Autolock _l(mLock); |
| const wp<SensorEventConnection> connection(c); |
| size_t size = mActiveSensors.size(); |
| ALOGD_IF(DEBUG_CONNECTIONS, "%d active sensors", size); |
| for (size_t i=0 ; i<size ; ) { |
| int handle = mActiveSensors.keyAt(i); |
| if (c->hasSensor(handle)) { |
| ALOGD_IF(DEBUG_CONNECTIONS, "%i: 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); |
| } |
| } |
| SensorRecord* rec = mActiveSensors.valueAt(i); |
| ALOGE_IF(!rec, "mActiveSensors[%d] is null (handle=0x%08x)!", i, handle); |
| ALOGD_IF(DEBUG_CONNECTIONS, |
| "removing connection %p for sensor[%d].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++; |
| } |
| } |
| mActiveConnections.remove(connection); |
| BatteryService::cleanup(c->getUid()); |
| } |
| |
| status_t SensorService::enable(const sp<SensorEventConnection>& connection, |
| int handle, nsecs_t samplingPeriodNs, nsecs_t maxBatchReportLatencyNs, int reservedFlags) |
| { |
| if (mInitCheck != NO_ERROR) |
| return mInitCheck; |
| |
| SensorInterface* sensor = mSensorMap.valueFor(handle); |
| if (sensor == NULL) { |
| return BAD_VALUE; |
| } |
| Mutex::Autolock _l(mLock); |
| 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().getMinDelay() == 0) { |
| sensors_event_t scratch; |
| sensors_event_t& event(mLastEventSeen.editValueFor(handle)); |
| if (event.version == sizeof(sensors_event_t)) { |
| connection->sendEvents(&event, 1); |
| } |
| } |
| } |
| } |
| |
| 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=%lld timeout== %lld", |
| handle, reservedFlags, samplingPeriodNs, maxBatchReportLatencyNs); |
| |
| status_t err = sensor->batch(connection.get(), handle, reservedFlags, samplingPeriodNs, |
| maxBatchReportLatencyNs); |
| if (err == NO_ERROR) { |
| connection->setFirstFlushPending(handle, true); |
| status_t err_flush = sensor->flush(connection.get(), handle); |
| // Flush may return error if the sensor is not activated or the underlying h/w sensor does |
| // not support flush. |
| if (err_flush != NO_ERROR) { |
| 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) { |
| // 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); |
| } |
| 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) { |
| 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) |
| { |
| if (mInitCheck != NO_ERROR) |
| return mInitCheck; |
| |
| SensorInterface* sensor = mSensorMap.valueFor(handle); |
| if (!sensor) |
| 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, |
| int handle) { |
| if (mInitCheck != NO_ERROR) return mInitCheck; |
| SensorInterface* sensor = mSensorMap.valueFor(handle); |
| if (sensor == NULL) { |
| return BAD_VALUE; |
| } |
| if (sensor->getSensor().getType() == SENSOR_TYPE_SIGNIFICANT_MOTION) { |
| ALOGE("flush called on Significant Motion sensor"); |
| return INVALID_OPERATION; |
| } |
| return sensor->flush(connection.get(), handle); |
| } |
| // --------------------------------------------------------------------------- |
| |
| SensorService::SensorRecord::SensorRecord( |
| const sp<SensorEventConnection>& connection) |
| { |
| mConnections.add(connection); |
| } |
| |
| bool SensorService::SensorRecord::addConnection( |
| const sp<SensorEventConnection>& connection) |
| { |
| if (mConnections.indexOf(connection) < 0) { |
| mConnections.add(connection); |
| return true; |
| } |
| return false; |
| } |
| |
| bool SensorService::SensorRecord::removeConnection( |
| const wp<SensorEventConnection>& connection) |
| { |
| ssize_t index = mConnections.indexOf(connection); |
| if (index >= 0) { |
| mConnections.removeItemsAt(index, 1); |
| } |
| return mConnections.size() ? false : true; |
| } |
| |
| // --------------------------------------------------------------------------- |
| |
| SensorService::SensorEventConnection::SensorEventConnection( |
| const sp<SensorService>& service, uid_t uid) |
| : mService(service), mUid(uid) |
| { |
| const SensorDevice& device(SensorDevice::getInstance()); |
| if (device.getHalDeviceVersion() >= SENSORS_DEVICE_API_VERSION_1_1) { |
| // Increase socket buffer size to 1MB for batching capabilities. |
| mChannel = new BitTube(service->mSocketBufferSize); |
| } else { |
| mChannel = new BitTube(SOCKET_BUFFER_SIZE_NON_BATCHED); |
| } |
| } |
| |
| SensorService::SensorEventConnection::~SensorEventConnection() |
| { |
| ALOGD_IF(DEBUG_CONNECTIONS, "~SensorEventConnection(%p)", this); |
| mService->cleanupConnection(this); |
| } |
| |
| void SensorService::SensorEventConnection::onFirstRef() |
| { |
| } |
| |
| void SensorService::SensorEventConnection::dump(String8& result) { |
| Mutex::Autolock _l(mConnectionLock); |
| for (size_t i = 0; i < mSensorInfo.size(); ++i) { |
| const FlushInfo& flushInfo = mSensorInfo.valueAt(i); |
| result.appendFormat("\t %s | status: %s | pending flush events %d\n", |
| mService->getSensorName(mSensorInfo.keyAt(i)).string(), |
| flushInfo.mFirstFlushPending ? "First flush pending" : |
| "active", |
| flushInfo.mPendingFlushEventsToSend); |
| } |
| } |
| |
| bool SensorService::SensorEventConnection::addSensor(int32_t handle) { |
| Mutex::Autolock _l(mConnectionLock); |
| if (mSensorInfo.indexOfKey(handle) < 0) { |
| mSensorInfo.add(handle, FlushInfo()); |
| return true; |
| } |
| return false; |
| } |
| |
| bool SensorService::SensorEventConnection::removeSensor(int32_t handle) { |
| Mutex::Autolock _l(mConnectionLock); |
| if (mSensorInfo.removeItem(handle) >= 0) { |
| return true; |
| } |
| return false; |
| } |
| |
| bool SensorService::SensorEventConnection::hasSensor(int32_t handle) const { |
| Mutex::Autolock _l(mConnectionLock); |
| return mSensorInfo.indexOfKey(handle) >= 0; |
| } |
| |
| bool SensorService::SensorEventConnection::hasAnySensor() const { |
| Mutex::Autolock _l(mConnectionLock); |
| return mSensorInfo.size() ? true : false; |
| } |
| |
| void SensorService::SensorEventConnection::setFirstFlushPending(int32_t handle, |
| bool value) { |
| Mutex::Autolock _l(mConnectionLock); |
| ssize_t index = mSensorInfo.indexOfKey(handle); |
| if (index >= 0) { |
| FlushInfo& flushInfo = mSensorInfo.editValueAt(index); |
| flushInfo.mFirstFlushPending = value; |
| } |
| } |
| |
| status_t SensorService::SensorEventConnection::sendEvents( |
| sensors_event_t const* buffer, size_t numEvents, |
| sensors_event_t* scratch) |
| { |
| // filter out events not for this connection |
| size_t count = 0; |
| |
| if (scratch) { |
| Mutex::Autolock _l(mConnectionLock); |
| size_t i=0; |
| while (i<numEvents) { |
| int32_t curr = buffer[i].sensor; |
| if (buffer[i].type == SENSOR_TYPE_META_DATA) { |
| ALOGD_IF(DEBUG_CONNECTIONS, "flush complete event sensor==%d ", |
| buffer[i].meta_data.sensor); |
| // Setting curr to the correct sensor to ensure the sensor events per connection are |
| // filtered correctly. buffer[i].sensor is zero for meta_data events. |
| curr = buffer[i].meta_data.sensor; |
| } |
| ssize_t index = mSensorInfo.indexOfKey(curr); |
| if (index >= 0 && mSensorInfo[index].mFirstFlushPending == true && |
| buffer[i].type == SENSOR_TYPE_META_DATA) { |
| // This is the first flush before activate is called. Events can now be sent for |
| // this sensor on this connection. |
| ALOGD_IF(DEBUG_CONNECTIONS, "First flush event for sensor==%d ", |
| buffer[i].meta_data.sensor); |
| mSensorInfo.editValueAt(index).mFirstFlushPending = false; |
| } |
| if (index >= 0 && mSensorInfo[index].mFirstFlushPending == false) { |
| do { |
| scratch[count++] = buffer[i++]; |
| } while ((i<numEvents) && ((buffer[i].sensor == curr) || |
| (buffer[i].type == SENSOR_TYPE_META_DATA && |
| buffer[i].meta_data.sensor == curr))); |
| } else { |
| i++; |
| } |
| } |
| } else { |
| scratch = const_cast<sensors_event_t *>(buffer); |
| count = numEvents; |
| } |
| |
| // Send pending flush events (if any) before sending events from the cache. |
| { |
| ASensorEvent flushCompleteEvent; |
| flushCompleteEvent.type = SENSOR_TYPE_META_DATA; |
| flushCompleteEvent.sensor = 0; |
| Mutex::Autolock _l(mConnectionLock); |
| // Loop through all the sensors for this connection and check if there are any pending |
| // flush complete events to be sent. |
| for (size_t i = 0; i < mSensorInfo.size(); ++i) { |
| FlushInfo& flushInfo = mSensorInfo.editValueAt(i); |
| while (flushInfo.mPendingFlushEventsToSend > 0) { |
| flushCompleteEvent.meta_data.sensor = mSensorInfo.keyAt(i); |
| ssize_t size = SensorEventQueue::write(mChannel, &flushCompleteEvent, 1); |
| if (size < 0) { |
| // ALOGW("dropping %d events on the floor", count); |
| countFlushCompleteEventsLocked(scratch, count); |
| return size; |
| } |
| ALOGD_IF(DEBUG_CONNECTIONS, "sent dropped flush complete event==%d ", |
| flushCompleteEvent.meta_data.sensor); |
| flushInfo.mPendingFlushEventsToSend--; |
| } |
| } |
| } |
| |
| // Early return if there are no events for this connection. |
| if (count == 0) { |
| return status_t(NO_ERROR); |
| } |
| |
| // NOTE: ASensorEvent and sensors_event_t are the same type |
| ssize_t size = SensorEventQueue::write(mChannel, |
| reinterpret_cast<ASensorEvent const*>(scratch), count); |
| if (size == -EAGAIN) { |
| // the destination doesn't accept events anymore, it's probably |
| // full. For now, we just drop the events on the floor. |
| // ALOGW("dropping %d events on the floor", count); |
| Mutex::Autolock _l(mConnectionLock); |
| countFlushCompleteEventsLocked(scratch, count); |
| return size; |
| } |
| |
| return size < 0 ? status_t(size) : status_t(NO_ERROR); |
| } |
| |
| void SensorService::SensorEventConnection::countFlushCompleteEventsLocked( |
| sensors_event_t* scratch, const int numEventsDropped) { |
| ALOGD_IF(DEBUG_CONNECTIONS, "dropping %d events ", numEventsDropped); |
| // Count flushComplete events in the events that are about to the dropped. These will be sent |
| // separately before the next batch of events. |
| for (int j = 0; j < numEventsDropped; ++j) { |
| if (scratch[j].type == SENSOR_TYPE_META_DATA) { |
| FlushInfo& flushInfo = mSensorInfo.editValueFor(scratch[j].meta_data.sensor); |
| flushInfo.mPendingFlushEventsToSend++; |
| ALOGD_IF(DEBUG_CONNECTIONS, "increment pendingFlushCount %d", |
| flushInfo.mPendingFlushEventsToSend); |
| } |
| } |
| return; |
| } |
| |
| sp<BitTube> SensorService::SensorEventConnection::getSensorChannel() const |
| { |
| return mChannel; |
| } |
| |
| status_t SensorService::SensorEventConnection::enableDisable( |
| int handle, bool enabled, nsecs_t samplingPeriodNs, nsecs_t maxBatchReportLatencyNs, |
| int reservedFlags) |
| { |
| status_t err; |
| if (enabled) { |
| err = mService->enable(this, handle, samplingPeriodNs, maxBatchReportLatencyNs, |
| reservedFlags); |
| } else { |
| err = mService->disable(this, handle); |
| } |
| return err; |
| } |
| |
| status_t SensorService::SensorEventConnection::setEventRate( |
| int handle, nsecs_t samplingPeriodNs) |
| { |
| return mService->setEventRate(this, handle, samplingPeriodNs); |
| } |
| |
| status_t SensorService::SensorEventConnection::flush() { |
| SensorDevice& dev(SensorDevice::getInstance()); |
| const int halVersion = dev.getHalDeviceVersion(); |
| Mutex::Autolock _l(mConnectionLock); |
| status_t err(NO_ERROR); |
| // Loop through all sensors for this connection and call flush on each of them. |
| for (size_t i = 0; i < mSensorInfo.size(); ++i) { |
| const int handle = mSensorInfo.keyAt(i); |
| if (halVersion < SENSORS_DEVICE_API_VERSION_1_1 || mService->isVirtualSensor(handle)) { |
| // For older devices just increment pending flush count which will send a trivial |
| // flush complete event. |
| FlushInfo& flushInfo = mSensorInfo.editValueFor(handle); |
| flushInfo.mPendingFlushEventsToSend++; |
| } else { |
| status_t err_flush = mService->flushSensor(this, handle); |
| if (err_flush != NO_ERROR) { |
| ALOGE("Flush error handle=%d %s", handle, strerror(-err_flush)); |
| } |
| err = (err_flush != NO_ERROR) ? err_flush : err; |
| } |
| } |
| return err; |
| } |
| |
| // --------------------------------------------------------------------------- |
| }; // namespace android |
| |