19066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/* 29066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Copyright (C) 2008 The Android Open Source Project 39066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 49066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Licensed under the Apache License, Version 2.0 (the "License"); 59066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * you may not use this file except in compliance with the License. 69066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * You may obtain a copy of the License at 79066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 89066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 99066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * 109066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Unless required by applicable law or agreed to in writing, software 119066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * distributed under the License is distributed on an "AS IS" BASIS, 129066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * See the License for the specific language governing permissions and 149066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * limitations under the License. 159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectpackage com.android.server; 189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.content.Context; 209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.hardware.ISensorService; 219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.os.Binder; 22270e87f71abc2edf446dbec20c725c823e8c7f37Mike Lockwoodimport android.os.Bundle; 239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.os.RemoteException; 249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.os.IBinder; 259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.util.Config; 269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport android.util.Log; 279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport java.util.ArrayList; 299066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 309066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport com.android.internal.app.IBatteryStats; 319066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectimport com.android.server.am.BatteryStatsService; 329066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project/** 359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * Class that manages the device's sensors. It register clients and activate 369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * the needed sensors. The sensor events themselves are not broadcasted from 379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * this service, instead, a file descriptor is provided to each client they 389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project * can read events from. 399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Projectclass SensorService extends ISensorService.Stub { 429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project static final String TAG = SensorService.class.getSimpleName(); 439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final boolean DEBUG = false; 449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final boolean localLOGV = DEBUG ? Config.LOGD : Config.LOGV; 459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static final int SENSOR_DISABLE = -1; 469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project /** 484df2423a947bcd3f024cc3d3a1a315a8dc428598The Android Open Source Project * Battery statistics to be updated when sensors are enabled and disabled. 499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project */ 509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final IBatteryStats mBatteryStats = BatteryStatsService.getService(); 519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private final class Listener implements IBinder.DeathRecipient { 539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project final IBinder mToken; 549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int mSensors = 0; 569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int mDelay = 0x7FFFFFFF; 579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 589066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Listener(IBinder token) { 599066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mToken = token; 609066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 619066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 629066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void addSensor(int sensor, int delay) { 639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSensors |= (1<<sensor); 649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mDelay > delay) 659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mDelay = delay; 669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project void removeSensor(int sensor) { 699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mSensors &= ~(1<<sensor); 709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project boolean hasSensor(int sensor) { 739066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return ((mSensors & (1<<sensor)) != 0); 749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public void binderDied() { 779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (localLOGV) Log.d(TAG, "sensor listener died"); 789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project synchronized(mListeners) { 799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mListeners.remove(this); 809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mToken.unlinkToDeath(this, 0); 819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // go through the lists of sensors used by the listener that 829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // died and deactivate them. 839066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int sensor=0 ; sensor<32 && mSensors!=0 ; sensor++) { 849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (hasSensor(sensor)) { 859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project removeSensor(sensor); 869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project try { 872d6b67d37f3164e53b311650aab94faabf46ef67Mike Lockwood deactivateIfUnusedLocked(sensor); 889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } catch (RemoteException e) { 899066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Log.w(TAG, "RemoteException in binderDied"); 909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 932d6b67d37f3164e53b311650aab94faabf46ef67Mike Lockwood if (mListeners.size() == 0) { 942d6b67d37f3164e53b311650aab94faabf46ef67Mike Lockwood _sensors_control_wake(); 952d6b67d37f3164e53b311650aab94faabf46ef67Mike Lockwood _sensors_control_close(); 962d6b67d37f3164e53b311650aab94faabf46ef67Mike Lockwood } 979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mListeners.notify(); 989066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1019066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1029066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project @SuppressWarnings("unused") 1039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public SensorService(Context context) { 1049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (localLOGV) Log.d(TAG, "SensorService startup"); 1059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project _sensors_control_init(); 1069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1079066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 108270e87f71abc2edf446dbec20c725c823e8c7f37Mike Lockwood public Bundle getDataChannel() throws RemoteException { 1092d6b67d37f3164e53b311650aab94faabf46ef67Mike Lockwood // synchronize so we do not require sensor HAL to be thread-safe. 1102d6b67d37f3164e53b311650aab94faabf46ef67Mike Lockwood synchronized(mListeners) { 1112d6b67d37f3164e53b311650aab94faabf46ef67Mike Lockwood return _sensors_control_open(); 1122d6b67d37f3164e53b311650aab94faabf46ef67Mike Lockwood } 1139066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1142d6b67d37f3164e53b311650aab94faabf46ef67Mike Lockwood 1159066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project public boolean enableSensor(IBinder binder, String name, int sensor, int enable) 1169066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project throws RemoteException { 1179066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (localLOGV) Log.d(TAG, "enableSensor " + name + "(#" + sensor + ") " + enable); 1189066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1199066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project // Inform battery statistics service of status change 1209066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int uid = Binder.getCallingUid(); 1219066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project long identity = Binder.clearCallingIdentity(); 1229066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (enable == SENSOR_DISABLE) { 1239066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mBatteryStats.noteStopSensor(uid, sensor); 1249066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 1259066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mBatteryStats.noteStartSensor(uid, sensor); 1269066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1279066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Binder.restoreCallingIdentity(identity); 1289066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1294df2423a947bcd3f024cc3d3a1a315a8dc428598The Android Open Source Project if (binder == null) { 1304df2423a947bcd3f024cc3d3a1a315a8dc428598The Android Open Source Project Log.w(TAG, "listener is null (sensor=" + name + ", id=" + sensor + ")"); 1314df2423a947bcd3f024cc3d3a1a315a8dc428598The Android Open Source Project return false; 1324df2423a947bcd3f024cc3d3a1a315a8dc428598The Android Open Source Project } 1339066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1349066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project synchronized(mListeners) { 1359066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (enable!=SENSOR_DISABLE && !_sensors_control_activate(sensor, true)) { 1369066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Log.w(TAG, "could not enable sensor " + sensor); 1379066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return false; 1389066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1399066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1409066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project Listener l = null; 1419066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int minDelay = enable; 1429066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (Listener listener : mListeners) { 1439066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (binder == listener.mToken) { 1449066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project l = listener; 1459066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1469066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (minDelay > listener.mDelay) 1479066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project minDelay = listener.mDelay; 1489066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1499066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1509066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (l == null && enable!=SENSOR_DISABLE) { 1519066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project l = new Listener(binder); 1529066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project binder.linkToDeath(l, 0); 1539066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mListeners.add(l); 1549066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mListeners.notify(); 1559066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1569066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1579066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (l == null) { 1584df2423a947bcd3f024cc3d3a1a315a8dc428598The Android Open Source Project // by construction, this means we're disabling a listener we 1594df2423a947bcd3f024cc3d3a1a315a8dc428598The Android Open Source Project // don't know about... 1604df2423a947bcd3f024cc3d3a1a315a8dc428598The Android Open Source Project Log.w(TAG, "listener with binder " + binder + 1614df2423a947bcd3f024cc3d3a1a315a8dc428598The Android Open Source Project ", doesn't exist (sensor=" + name + ", id=" + sensor + ")"); 1624df2423a947bcd3f024cc3d3a1a315a8dc428598The Android Open Source Project return false; 1639066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1649066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1659066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (minDelay >= 0) { 1669066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project _sensors_control_set_delay(minDelay); 1679066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1689066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1699066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (enable != SENSOR_DISABLE) { 1709066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project l.addSensor(sensor, enable); 1719066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } else { 1729066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project l.removeSensor(sensor); 1732d6b67d37f3164e53b311650aab94faabf46ef67Mike Lockwood deactivateIfUnusedLocked(sensor); 1749066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (l.mSensors == 0) { 1759066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mListeners.remove(l); 1769066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project binder.unlinkToDeath(l, 0); 1779066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project mListeners.notify(); 1789066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1799066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1809066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1819066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mListeners.size() == 0) { 1829066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project _sensors_control_wake(); 1832d6b67d37f3164e53b311650aab94faabf46ef67Mike Lockwood _sensors_control_close(); 1849066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1859066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1869066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return true; 1879066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1889066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1892d6b67d37f3164e53b311650aab94faabf46ef67Mike Lockwood private void deactivateIfUnusedLocked(int sensor) throws RemoteException { 1909066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project int size = mListeners.size(); 1919066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project for (int i=0 ; i<size ; i++) { 1929066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project if (mListeners.get(i).hasSensor(sensor)) 1939066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project return; 1949066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1959066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project _sensors_control_activate(sensor, false); 1969066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project } 1979066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 1982d6b67d37f3164e53b311650aab94faabf46ef67Mike Lockwood private ArrayList<Listener> mListeners = new ArrayList<Listener>(); 1999066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project 2009066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static native int _sensors_control_init(); 201270e87f71abc2edf446dbec20c725c823e8c7f37Mike Lockwood private static native Bundle _sensors_control_open(); 2022d6b67d37f3164e53b311650aab94faabf46ef67Mike Lockwood private static native int _sensors_control_close(); 2039066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static native boolean _sensors_control_activate(int sensor, boolean activate); 2049066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static native int _sensors_control_set_delay(int ms); 2059066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project private static native int _sensors_control_wake(); 2069066cfe9886ac131c34d59ed0e2d287b0e3c0087The Android Open Source Project} 207