new SensorService
remove old sensor service and implement SensorManager
on top of the new (native) SensorManger API.
Change-Id: Iddb77d498755da3e11646473a44d651f12f40281
diff --git a/services/sensorservice/SensorService.cpp b/services/sensorservice/SensorService.cpp
new file mode 100644
index 0000000..5410cbc
--- /dev/null
+++ b/services/sensorservice/SensorService.cpp
@@ -0,0 +1,359 @@
+/*
+ * 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 <stdint.h>
+#include <sys/types.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 <binder/BinderService.h>
+
+#include <gui/ISensorServer.h>
+#include <gui/ISensorEventConnection.h>
+
+#include <hardware/sensors.h>
+
+#include "SensorService.h"
+
+namespace android {
+// ---------------------------------------------------------------------------
+
+/*
+ * TODO:
+ * - handle per-connection event rate
+ * - filter events per connection
+ * - make sure to keep the last value of each event type so we can quickly
+ * send something to application when they enable a sensor that is already
+ * active (the issue here is that it can take time before a value is
+ * produced by the h/w if the rate is low or if it's a one-shot sensor).
+ */
+
+SensorService::SensorService()
+ : Thread(false),
+ mDump("android.permission.DUMP")
+{
+}
+
+void SensorService::onFirstRef()
+{
+ status_t err = hw_get_module(SENSORS_HARDWARE_MODULE_ID,
+ (hw_module_t const**)&mSensorModule);
+
+ LOGE_IF(err, "couldn't load %s module (%s)",
+ SENSORS_HARDWARE_MODULE_ID, strerror(-err));
+
+ err = sensors_open(&mSensorModule->common, &mSensorDevice);
+
+ LOGE_IF(err, "couldn't open device for module %s (%s)",
+ SENSORS_HARDWARE_MODULE_ID, strerror(-err));
+
+ LOGD("nuSensorService starting...");
+
+ struct sensor_t const* list;
+ int count = mSensorModule->get_sensors_list(mSensorModule, &list);
+ for (int i=0 ; i<count ; i++) {
+ Sensor sensor(list + i);
+ LOGI("%s", sensor.getName().string());
+ mSensorList.add(sensor);
+ mSensorDevice->activate(mSensorDevice, sensor.getHandle(), 0);
+ }
+
+ run("SensorService", PRIORITY_URGENT_DISPLAY);
+}
+
+SensorService::~SensorService()
+{
+}
+
+status_t SensorService::dump(int fd, const Vector<String16>& args)
+{
+ const size_t SIZE = 1024;
+ char buffer[SIZE];
+ String8 result;
+ if (!mDump.checkCalling()) {
+ snprintf(buffer, SIZE, "Permission Denial: "
+ "can't dump SurfaceFlinger from pid=%d, uid=%d\n",
+ IPCThreadState::self()->getCallingPid(),
+ IPCThreadState::self()->getCallingUid());
+ result.append(buffer);
+ } else {
+ Mutex::Autolock _l(mLock);
+ snprintf(buffer, SIZE, "%d connections / %d active\n",
+ mConnections.size(), mActiveConnections.size());
+ result.append(buffer);
+ snprintf(buffer, SIZE, "Active sensors:\n");
+ result.append(buffer);
+ for (size_t i=0 ; i<mActiveSensors.size() ; i++) {
+ snprintf(buffer, SIZE, "handle=%d, connections=%d\n",
+ mActiveSensors.keyAt(i),
+ mActiveSensors.valueAt(i)->getNumConnections());
+ result.append(buffer);
+ }
+ }
+ write(fd, result.string(), result.size());
+ return NO_ERROR;
+}
+
+bool SensorService::threadLoop()
+{
+ LOGD("nuSensorService thread starting...");
+
+ sensors_event_t buffer[16];
+ struct sensors_poll_device_t* device = mSensorDevice;
+ ssize_t count;
+
+ do {
+ count = device->poll(device, buffer, sizeof(buffer)/sizeof(*buffer));
+ if (count<0) {
+ LOGE("sensor poll failed (%s)", strerror(-count));
+ break;
+ }
+
+ const SortedVector< wp<SensorEventConnection> > activeConnections(
+ getActiveConnections());
+
+ size_t numConnections = activeConnections.size();
+ if (numConnections) {
+ for (size_t i=0 ; i<numConnections ; i++) {
+ sp<SensorEventConnection> connection(activeConnections[i].promote());
+ if (connection != 0) {
+ connection->sendEvents(buffer, count);
+ }
+ }
+ }
+
+ } while (count >= 0 || Thread::exitPending());
+
+ LOGW("Exiting SensorService::threadLoop!");
+ return false;
+}
+
+SortedVector< wp<SensorService::SensorEventConnection> >
+SensorService::getActiveConnections() const
+{
+ Mutex::Autolock _l(mLock);
+ return mActiveConnections;
+}
+
+Vector<Sensor> SensorService::getSensorList()
+{
+ return mSensorList;
+}
+
+sp<ISensorEventConnection> SensorService::createSensorEventConnection()
+{
+ sp<SensorEventConnection> result(new SensorEventConnection(this));
+ Mutex::Autolock _l(mLock);
+ mConnections.add(result);
+ return result;
+}
+
+void SensorService::cleanupConnection(const wp<SensorEventConnection>& connection)
+{
+ Mutex::Autolock _l(mLock);
+ ssize_t index = mConnections.indexOf(connection);
+ if (index >= 0) {
+
+ size_t size = mActiveSensors.size();
+ for (size_t i=0 ; i<size ; ) {
+ SensorRecord* rec = mActiveSensors.valueAt(i);
+ if (rec && rec->removeConnection(connection)) {
+ mSensorDevice->activate(mSensorDevice, mActiveSensors.keyAt(i), 0);
+ mActiveSensors.removeItemsAt(i, 1);
+ delete rec;
+ size--;
+ } else {
+ i++;
+ }
+ }
+
+ mActiveConnections.remove(connection);
+ mConnections.removeItemsAt(index, 1);
+ }
+}
+
+status_t SensorService::enable(const sp<SensorEventConnection>& connection,
+ int handle)
+{
+ status_t err = NO_ERROR;
+ Mutex::Autolock _l(mLock);
+ SensorRecord* rec = mActiveSensors.valueFor(handle);
+ if (rec == 0) {
+ rec = new SensorRecord(connection);
+ mActiveSensors.add(handle, rec);
+ err = mSensorDevice->activate(mSensorDevice, handle, 1);
+ LOGE_IF(err, "Error activating sensor %d (%s)", handle, strerror(-err));
+ } else {
+ err = rec->addConnection(connection);
+ }
+ if (err == NO_ERROR) {
+ // connection now active
+ connection->addSensor(handle);
+ if (mActiveConnections.indexOf(connection) < 0) {
+ mActiveConnections.add(connection);
+ }
+ }
+ return err;
+}
+
+status_t SensorService::disable(const sp<SensorEventConnection>& connection,
+ int handle)
+{
+ status_t err = NO_ERROR;
+ Mutex::Autolock _l(mLock);
+ SensorRecord* rec = mActiveSensors.valueFor(handle);
+ LOGW("sensor (handle=%d) is not enabled", handle);
+ if (rec) {
+ // see if this connection becomes inactive
+ connection->removeSensor(handle);
+ if (connection->hasAnySensor() == false) {
+ mActiveConnections.remove(connection);
+ }
+ // see if this sensor becomes inactive
+ if (rec->removeConnection(connection)) {
+ mActiveSensors.removeItem(handle);
+ delete rec;
+ err = mSensorDevice->activate(mSensorDevice, handle, 0);
+ }
+ }
+ return err;
+}
+
+status_t SensorService::setRate(const sp<SensorEventConnection>& connection,
+ int handle, nsecs_t ns)
+{
+ status_t err = NO_ERROR;
+ Mutex::Autolock _l(mLock);
+
+ err = mSensorDevice->setDelay(mSensorDevice, handle, ns);
+
+ // TODO: handle rate per connection
+ return err;
+}
+
+// ---------------------------------------------------------------------------
+
+SensorService::SensorRecord::SensorRecord(
+ const sp<SensorEventConnection>& connection)
+{
+ mConnections.add(connection);
+}
+
+status_t SensorService::SensorRecord::addConnection(
+ const sp<SensorEventConnection>& connection)
+{
+ if (mConnections.indexOf(connection) < 0) {
+ mConnections.add(connection);
+ }
+ return NO_ERROR;
+}
+
+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)
+ : mService(service), mChannel(new SensorChannel())
+{
+}
+
+SensorService::SensorEventConnection::~SensorEventConnection()
+{
+ mService->cleanupConnection(this);
+}
+
+void SensorService::SensorEventConnection::onFirstRef()
+{
+}
+
+void SensorService::SensorEventConnection::addSensor(int32_t handle) {
+ if (mSensorList.indexOf(handle) <= 0) {
+ mSensorList.add(handle);
+ }
+}
+
+void SensorService::SensorEventConnection::removeSensor(int32_t handle) {
+ mSensorList.remove(handle);
+}
+
+bool SensorService::SensorEventConnection::hasSensor(int32_t handle) const {
+ return mSensorList.indexOf(handle) >= 0;
+}
+
+bool SensorService::SensorEventConnection::hasAnySensor() const {
+ return mSensorList.size() ? true : false;
+}
+
+status_t SensorService::SensorEventConnection::sendEvents(
+ sensors_event_t const* buffer, size_t count)
+{
+ // TODO: we should only send the events for the sensors this connection
+ // is registered for.
+
+ ssize_t size = mChannel->write(buffer, count*sizeof(sensors_event_t));
+ if (size == -EAGAIN) {
+ // the destination doesn't accept events anymore, it's probably
+ // full. For now, we just drop the events on the floor.
+ LOGW("dropping %d events on the floor", count);
+ return size;
+ }
+
+ LOGE_IF(size<0, "dropping %d events on the floor (%s)",
+ count, strerror(-size));
+
+ return size < 0 ? size : NO_ERROR;
+}
+
+sp<SensorChannel> SensorService::SensorEventConnection::getSensorChannel() const
+{
+ return mChannel;
+}
+
+status_t SensorService::SensorEventConnection::enableDisable(
+ int handle, bool enabled)
+{
+ status_t err;
+ if (enabled) {
+ err = mService->enable(this, handle);
+ } else {
+ err = mService->disable(this, handle);
+ }
+ return err;
+}
+
+status_t SensorService::SensorEventConnection::setEventRate(
+ int handle, nsecs_t ns)
+{
+ return mService->setRate(this, handle, ns);
+}
+
+// ---------------------------------------------------------------------------
+}; // namespace android
+