| /* |
| * Copyright (C) 2008 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. |
| */ |
| |
| package com.android.server.location; |
| |
| import android.app.AlarmManager; |
| import android.app.PendingIntent; |
| import android.content.BroadcastReceiver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.location.Criteria; |
| import android.location.IGpsStatusListener; |
| import android.location.IGpsStatusProvider; |
| import android.location.ILocationManager; |
| import android.location.INetInitiatedListener; |
| import android.location.Location; |
| import android.location.LocationManager; |
| import android.location.LocationProvider; |
| import android.net.ConnectivityManager; |
| import android.net.NetworkInfo; |
| import android.net.SntpClient; |
| import android.os.Bundle; |
| import android.os.Handler; |
| import android.os.IBinder; |
| import android.os.Looper; |
| import android.os.Message; |
| import android.os.PowerManager; |
| import android.os.Process; |
| import android.os.RemoteException; |
| import android.os.ServiceManager; |
| import android.os.SystemClock; |
| import android.provider.Settings; |
| import android.util.Log; |
| import android.util.SparseIntArray; |
| |
| import com.android.internal.app.IBatteryStats; |
| import com.android.internal.telephony.Phone; |
| import com.android.internal.location.GpsNetInitiatedHandler; |
| import com.android.internal.location.GpsNetInitiatedHandler.GpsNiNotification; |
| |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.IOException; |
| import java.io.StringBufferInputStream; |
| import java.net.InetAddress; |
| import java.net.UnknownHostException; |
| import java.util.ArrayList; |
| import java.util.Date; |
| import java.util.Properties; |
| import java.util.Map.Entry; |
| import java.util.concurrent.CountDownLatch; |
| |
| /** |
| * A GPS implementation of LocationProvider used by LocationManager. |
| * |
| * {@hide} |
| */ |
| public class GpsLocationProvider implements LocationProviderInterface { |
| |
| private static final String TAG = "GpsLocationProvider"; |
| |
| private static final boolean DEBUG = false; |
| private static final boolean VERBOSE = false; |
| |
| // these need to match GpsPositionMode enum in gps.h |
| private static final int GPS_POSITION_MODE_STANDALONE = 0; |
| private static final int GPS_POSITION_MODE_MS_BASED = 1; |
| private static final int GPS_POSITION_MODE_MS_ASSISTED = 2; |
| |
| // these need to match GpsStatusValue defines in gps.h |
| private static final int GPS_STATUS_NONE = 0; |
| private static final int GPS_STATUS_SESSION_BEGIN = 1; |
| private static final int GPS_STATUS_SESSION_END = 2; |
| private static final int GPS_STATUS_ENGINE_ON = 3; |
| private static final int GPS_STATUS_ENGINE_OFF = 4; |
| |
| // these need to match GpsApgsStatusValue defines in gps.h |
| /** AGPS status event values. */ |
| private static final int GPS_REQUEST_AGPS_DATA_CONN = 1; |
| private static final int GPS_RELEASE_AGPS_DATA_CONN = 2; |
| private static final int GPS_AGPS_DATA_CONNECTED = 3; |
| private static final int GPS_AGPS_DATA_CONN_DONE = 4; |
| private static final int GPS_AGPS_DATA_CONN_FAILED = 5; |
| |
| // these need to match GpsLocationFlags enum in gps.h |
| private static final int LOCATION_INVALID = 0; |
| private static final int LOCATION_HAS_LAT_LONG = 1; |
| private static final int LOCATION_HAS_ALTITUDE = 2; |
| private static final int LOCATION_HAS_SPEED = 4; |
| private static final int LOCATION_HAS_BEARING = 8; |
| private static final int LOCATION_HAS_ACCURACY = 16; |
| |
| // IMPORTANT - the GPS_DELETE_* symbols here must match constants in gps.h |
| private static final int GPS_DELETE_EPHEMERIS = 0x0001; |
| private static final int GPS_DELETE_ALMANAC = 0x0002; |
| private static final int GPS_DELETE_POSITION = 0x0004; |
| private static final int GPS_DELETE_TIME = 0x0008; |
| private static final int GPS_DELETE_IONO = 0x0010; |
| private static final int GPS_DELETE_UTC = 0x0020; |
| private static final int GPS_DELETE_HEALTH = 0x0040; |
| private static final int GPS_DELETE_SVDIR = 0x0080; |
| private static final int GPS_DELETE_SVSTEER = 0x0100; |
| private static final int GPS_DELETE_SADATA = 0x0200; |
| private static final int GPS_DELETE_RTI = 0x0400; |
| private static final int GPS_DELETE_CELLDB_INFO = 0x8000; |
| private static final int GPS_DELETE_ALL = 0xFFFF; |
| |
| // these need to match AGpsType enum in gps.h |
| private static final int AGPS_TYPE_SUPL = 1; |
| private static final int AGPS_TYPE_C2K = 2; |
| |
| // for mAGpsDataConnectionState |
| private static final int AGPS_DATA_CONNECTION_CLOSED = 0; |
| private static final int AGPS_DATA_CONNECTION_OPENING = 1; |
| private static final int AGPS_DATA_CONNECTION_OPEN = 2; |
| |
| // Handler messages |
| private static final int CHECK_LOCATION = 1; |
| private static final int ENABLE = 2; |
| private static final int ENABLE_TRACKING = 3; |
| private static final int UPDATE_NETWORK_STATE = 4; |
| private static final int INJECT_NTP_TIME = 5; |
| private static final int DOWNLOAD_XTRA_DATA = 6; |
| private static final int UPDATE_LOCATION = 7; |
| private static final int ADD_LISTENER = 8; |
| private static final int REMOVE_LISTENER = 9; |
| |
| private static final String PROPERTIES_FILE = "/etc/gps.conf"; |
| |
| private int mLocationFlags = LOCATION_INVALID; |
| |
| // current status |
| private int mStatus = LocationProvider.TEMPORARILY_UNAVAILABLE; |
| |
| // time for last status update |
| private long mStatusUpdateTime = SystemClock.elapsedRealtime(); |
| |
| // turn off GPS fix icon if we haven't received a fix in 10 seconds |
| private static final long RECENT_FIX_TIMEOUT = 10; |
| |
| // number of fixes to receive before disabling GPS |
| private static final int MIN_FIX_COUNT = 10; |
| |
| // stop trying if we do not receive a fix within 60 seconds |
| private static final int NO_FIX_TIMEOUT = 60; |
| |
| // true if we are enabled |
| private volatile boolean mEnabled; |
| |
| // true if we have network connectivity |
| private boolean mNetworkAvailable; |
| |
| // flags to trigger NTP or XTRA data download when network becomes available |
| // initialized to true so we do NTP and XTRA when the network comes up after booting |
| private boolean mInjectNtpTimePending = true; |
| private boolean mDownloadXtraDataPending = true; |
| |
| // true if GPS is navigating |
| private boolean mNavigating; |
| |
| // true if GPS engine is on |
| private boolean mEngineOn; |
| |
| // requested frequency of fixes, in seconds |
| private int mFixInterval = 1; |
| |
| // number of fixes we have received since we started navigating |
| private int mFixCount; |
| |
| // true if we started navigation |
| private boolean mStarted; |
| |
| // for calculating time to first fix |
| private long mFixRequestTime = 0; |
| // time to first fix for most recent session |
| private int mTTFF = 0; |
| // time we received our last fix |
| private long mLastFixTime; |
| |
| // properties loaded from PROPERTIES_FILE |
| private Properties mProperties; |
| private String mNtpServer; |
| private String mSuplServerHost; |
| private int mSuplServerPort; |
| private String mC2KServerHost; |
| private int mC2KServerPort; |
| |
| private final Context mContext; |
| private final ILocationManager mLocationManager; |
| private Location mLocation = new Location(LocationManager.GPS_PROVIDER); |
| private Bundle mLocationExtras = new Bundle(); |
| private ArrayList<Listener> mListeners = new ArrayList<Listener>(); |
| |
| // GpsLocationProvider's handler thread |
| private final Thread mThread; |
| // Handler for processing events in mThread. |
| private Handler mHandler; |
| // Used to signal when our main thread has initialized everything |
| private final CountDownLatch mInitializedLatch = new CountDownLatch(1); |
| // Thread for receiving events from the native code |
| private Thread mEventThread; |
| |
| private String mAGpsApn; |
| private int mAGpsDataConnectionState; |
| private final ConnectivityManager mConnMgr; |
| private final GpsNetInitiatedHandler mNIHandler; |
| |
| // Wakelocks |
| private final static String WAKELOCK_KEY = "GpsLocationProvider"; |
| private final PowerManager.WakeLock mWakeLock; |
| |
| // Alarms |
| private final static String ALARM_WAKEUP = "com.android.internal.location.ALARM_WAKEUP"; |
| private final static String ALARM_TIMEOUT = "com.android.internal.location.ALARM_TIMEOUT"; |
| private final AlarmManager mAlarmManager; |
| private final PendingIntent mWakeupIntent; |
| private final PendingIntent mTimeoutIntent; |
| |
| private final IBatteryStats mBatteryStats; |
| private final SparseIntArray mClientUids = new SparseIntArray(); |
| |
| // how often to request NTP time, in milliseconds |
| // current setting 4 hours |
| private static final long NTP_INTERVAL = 4*60*60*1000; |
| // how long to wait if we have a network error in NTP or XTRA downloading |
| // current setting - 5 minutes |
| private static final long RETRY_INTERVAL = 5*60*1000; |
| |
| // to avoid injecting bad NTP time, we reject any time fixes that differ from system time |
| // by more than 5 minutes. |
| private static final long MAX_NTP_SYSTEM_TIME_OFFSET = 5*60*1000; |
| |
| private final IGpsStatusProvider mGpsStatusProvider = new IGpsStatusProvider.Stub() { |
| public void addGpsStatusListener(IGpsStatusListener listener) throws RemoteException { |
| if (listener == null) { |
| throw new NullPointerException("listener is null in addGpsStatusListener"); |
| } |
| |
| synchronized(mListeners) { |
| IBinder binder = listener.asBinder(); |
| int size = mListeners.size(); |
| for (int i = 0; i < size; i++) { |
| Listener test = mListeners.get(i); |
| if (binder.equals(test.mListener.asBinder())) { |
| // listener already added |
| return; |
| } |
| } |
| |
| Listener l = new Listener(listener); |
| binder.linkToDeath(l, 0); |
| mListeners.add(l); |
| } |
| } |
| |
| public void removeGpsStatusListener(IGpsStatusListener listener) { |
| if (listener == null) { |
| throw new NullPointerException("listener is null in addGpsStatusListener"); |
| } |
| |
| synchronized(mListeners) { |
| IBinder binder = listener.asBinder(); |
| Listener l = null; |
| int size = mListeners.size(); |
| for (int i = 0; i < size && l == null; i++) { |
| Listener test = mListeners.get(i); |
| if (binder.equals(test.mListener.asBinder())) { |
| l = test; |
| } |
| } |
| |
| if (l != null) { |
| mListeners.remove(l); |
| binder.unlinkToDeath(l, 0); |
| } |
| } |
| } |
| }; |
| |
| public IGpsStatusProvider getGpsStatusProvider() { |
| return mGpsStatusProvider; |
| } |
| |
| private final BroadcastReceiver mBroadcastReciever = new BroadcastReceiver() { |
| @Override public void onReceive(Context context, Intent intent) { |
| String action = intent.getAction(); |
| |
| if (action.equals(ALARM_WAKEUP)) { |
| if (DEBUG) Log.d(TAG, "ALARM_WAKEUP"); |
| startNavigating(); |
| } else if (action.equals(ALARM_TIMEOUT)) { |
| if (DEBUG) Log.d(TAG, "ALARM_TIMEOUT"); |
| hibernate(); |
| } |
| } |
| }; |
| |
| public static boolean isSupported() { |
| return native_is_supported(); |
| } |
| |
| public GpsLocationProvider(Context context, ILocationManager locationManager) { |
| mContext = context; |
| mLocationManager = locationManager; |
| mNIHandler = new GpsNetInitiatedHandler(context); |
| |
| mLocation.setExtras(mLocationExtras); |
| |
| // Create a wake lock |
| PowerManager powerManager = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); |
| mWakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, WAKELOCK_KEY); |
| |
| mAlarmManager = (AlarmManager)mContext.getSystemService(Context.ALARM_SERVICE); |
| mWakeupIntent = PendingIntent.getBroadcast(mContext, 0, new Intent(ALARM_WAKEUP), 0); |
| mTimeoutIntent = PendingIntent.getBroadcast(mContext, 0, new Intent(ALARM_TIMEOUT), 0); |
| |
| mConnMgr = (ConnectivityManager)context.getSystemService(Context.CONNECTIVITY_SERVICE); |
| |
| // Battery statistics service to be notified when GPS turns on or off |
| mBatteryStats = IBatteryStats.Stub.asInterface(ServiceManager.getService("batteryinfo")); |
| |
| mProperties = new Properties(); |
| try { |
| File file = new File(PROPERTIES_FILE); |
| FileInputStream stream = new FileInputStream(file); |
| mProperties.load(stream); |
| stream.close(); |
| mNtpServer = mProperties.getProperty("NTP_SERVER", null); |
| |
| mSuplServerHost = mProperties.getProperty("SUPL_HOST"); |
| String portString = mProperties.getProperty("SUPL_PORT"); |
| if (mSuplServerHost != null && portString != null) { |
| try { |
| mSuplServerPort = Integer.parseInt(portString); |
| } catch (NumberFormatException e) { |
| Log.e(TAG, "unable to parse SUPL_PORT: " + portString); |
| } |
| } |
| |
| mC2KServerHost = mProperties.getProperty("C2K_HOST"); |
| portString = mProperties.getProperty("C2K_PORT"); |
| if (mC2KServerHost != null && portString != null) { |
| try { |
| mC2KServerPort = Integer.parseInt(portString); |
| } catch (NumberFormatException e) { |
| Log.e(TAG, "unable to parse C2K_PORT: " + portString); |
| } |
| } |
| } catch (IOException e) { |
| Log.w(TAG, "Could not open GPS configuration file " + PROPERTIES_FILE); |
| } |
| |
| // wait until we are fully initialized before returning |
| mThread = new GpsLocationProviderThread(); |
| mThread.start(); |
| while (true) { |
| try { |
| mInitializedLatch.await(); |
| break; |
| } catch (InterruptedException e) { |
| Thread.currentThread().interrupt(); |
| } |
| } |
| } |
| |
| private void initialize() { |
| // register our receiver on our thread rather than the main thread |
| IntentFilter intentFilter = new IntentFilter(); |
| intentFilter.addAction(ALARM_WAKEUP); |
| intentFilter.addAction(ALARM_TIMEOUT); |
| mContext.registerReceiver(mBroadcastReciever, intentFilter); |
| } |
| |
| /** |
| * Returns the name of this provider. |
| */ |
| public String getName() { |
| return LocationManager.GPS_PROVIDER; |
| } |
| |
| /** |
| * Returns true if the provider requires access to a |
| * data network (e.g., the Internet), false otherwise. |
| */ |
| public boolean requiresNetwork() { |
| return true; |
| } |
| |
| public void updateNetworkState(int state, NetworkInfo info) { |
| mHandler.removeMessages(UPDATE_NETWORK_STATE); |
| Message m = Message.obtain(mHandler, UPDATE_NETWORK_STATE); |
| m.arg1 = state; |
| m.obj = info; |
| mHandler.sendMessage(m); |
| } |
| |
| private void handleUpdateNetworkState(int state, NetworkInfo info) { |
| mNetworkAvailable = (state == LocationProvider.AVAILABLE); |
| |
| if (DEBUG) { |
| Log.d(TAG, "updateNetworkState " + (mNetworkAvailable ? "available" : "unavailable") |
| + " info: " + info); |
| } |
| |
| if (info != null && info.getType() == ConnectivityManager.TYPE_MOBILE_SUPL |
| && mAGpsDataConnectionState == AGPS_DATA_CONNECTION_OPENING) { |
| String apnName = info.getExtraInfo(); |
| if (mNetworkAvailable && apnName != null && apnName.length() > 0) { |
| mAGpsApn = apnName; |
| if (DEBUG) Log.d(TAG, "call native_agps_data_conn_open"); |
| native_agps_data_conn_open(apnName); |
| mAGpsDataConnectionState = AGPS_DATA_CONNECTION_OPEN; |
| } else { |
| if (DEBUG) Log.d(TAG, "call native_agps_data_conn_failed"); |
| mAGpsApn = null; |
| mAGpsDataConnectionState = AGPS_DATA_CONNECTION_CLOSED; |
| native_agps_data_conn_failed(); |
| } |
| } |
| |
| if (mNetworkAvailable) { |
| if (mInjectNtpTimePending) { |
| mHandler.removeMessages(INJECT_NTP_TIME); |
| mHandler.sendMessage(Message.obtain(mHandler, INJECT_NTP_TIME)); |
| } |
| if (mDownloadXtraDataPending) { |
| mHandler.removeMessages(DOWNLOAD_XTRA_DATA); |
| mHandler.sendMessage(Message.obtain(mHandler, DOWNLOAD_XTRA_DATA)); |
| } |
| } |
| } |
| |
| private void handleInjectNtpTime() { |
| if (!mNetworkAvailable) { |
| // try again when network is up |
| mInjectNtpTimePending = true; |
| return; |
| } |
| mInjectNtpTimePending = false; |
| |
| SntpClient client = new SntpClient(); |
| long delay; |
| |
| if (client.requestTime(mNtpServer, 10000)) { |
| long time = client.getNtpTime(); |
| long timeReference = client.getNtpTimeReference(); |
| int certainty = (int)(client.getRoundTripTime()/2); |
| long now = System.currentTimeMillis(); |
| long systemTimeOffset = time - now; |
| |
| Log.d(TAG, "NTP server returned: " |
| + time + " (" + new Date(time) |
| + ") reference: " + timeReference |
| + " certainty: " + certainty |
| + " system time offset: " + systemTimeOffset); |
| |
| // sanity check NTP time and do not use if it is too far from system time |
| if (systemTimeOffset < 0) { |
| systemTimeOffset = -systemTimeOffset; |
| } |
| if (systemTimeOffset < MAX_NTP_SYSTEM_TIME_OFFSET) { |
| native_inject_time(time, timeReference, certainty); |
| } else { |
| Log.e(TAG, "NTP time differs from system time by " + systemTimeOffset |
| + "ms. Ignoring."); |
| } |
| delay = NTP_INTERVAL; |
| } else { |
| if (DEBUG) Log.d(TAG, "requestTime failed"); |
| delay = RETRY_INTERVAL; |
| } |
| |
| // send delayed message for next NTP injection |
| mHandler.removeMessages(INJECT_NTP_TIME); |
| mHandler.sendMessageDelayed(Message.obtain(mHandler, INJECT_NTP_TIME), delay); |
| } |
| |
| private void handleDownloadXtraData() { |
| if (!mDownloadXtraDataPending) { |
| // try again when network is up |
| mDownloadXtraDataPending = true; |
| return; |
| } |
| mDownloadXtraDataPending = false; |
| |
| |
| GpsXtraDownloader xtraDownloader = new GpsXtraDownloader(mContext, mProperties); |
| byte[] data = xtraDownloader.downloadXtraData(); |
| if (data != null) { |
| if (DEBUG) { |
| Log.d(TAG, "calling native_inject_xtra_data"); |
| } |
| native_inject_xtra_data(data, data.length); |
| } else { |
| // try again later |
| mHandler.removeMessages(DOWNLOAD_XTRA_DATA); |
| mHandler.sendMessageDelayed(Message.obtain(mHandler, DOWNLOAD_XTRA_DATA), RETRY_INTERVAL); |
| } |
| } |
| |
| /** |
| * This is called to inform us when another location provider returns a location. |
| * Someday we might use this for network location injection to aid the GPS |
| */ |
| public void updateLocation(Location location) { |
| mHandler.removeMessages(UPDATE_LOCATION); |
| Message m = Message.obtain(mHandler, UPDATE_LOCATION); |
| m.obj = location; |
| mHandler.sendMessage(m); |
| } |
| |
| private void handleUpdateLocation(Location location) { |
| if (location.hasAccuracy()) { |
| native_inject_location(location.getLatitude(), location.getLongitude(), |
| location.getAccuracy()); |
| } |
| } |
| |
| /** |
| * Returns true if the provider requires access to a |
| * satellite-based positioning system (e.g., GPS), false |
| * otherwise. |
| */ |
| public boolean requiresSatellite() { |
| return true; |
| } |
| |
| /** |
| * Returns true if the provider requires access to an appropriate |
| * cellular network (e.g., to make use of cell tower IDs), false |
| * otherwise. |
| */ |
| public boolean requiresCell() { |
| return false; |
| } |
| |
| /** |
| * Returns true if the use of this provider may result in a |
| * monetary charge to the user, false if use is free. It is up to |
| * each provider to give accurate information. |
| */ |
| public boolean hasMonetaryCost() { |
| return false; |
| } |
| |
| /** |
| * Returns true if the provider is able to provide altitude |
| * information, false otherwise. A provider that reports altitude |
| * under most circumstances but may occassionally not report it |
| * should return true. |
| */ |
| public boolean supportsAltitude() { |
| return true; |
| } |
| |
| /** |
| * Returns true if the provider is able to provide speed |
| * information, false otherwise. A provider that reports speed |
| * under most circumstances but may occassionally not report it |
| * should return true. |
| */ |
| public boolean supportsSpeed() { |
| return true; |
| } |
| |
| /** |
| * Returns true if the provider is able to provide bearing |
| * information, false otherwise. A provider that reports bearing |
| * under most circumstances but may occassionally not report it |
| * should return true. |
| */ |
| public boolean supportsBearing() { |
| return true; |
| } |
| |
| /** |
| * Returns the power requirement for this provider. |
| * |
| * @return the power requirement for this provider, as one of the |
| * constants Criteria.POWER_REQUIREMENT_*. |
| */ |
| public int getPowerRequirement() { |
| return Criteria.POWER_HIGH; |
| } |
| |
| /** |
| * Returns the horizontal accuracy of this provider |
| * |
| * @return the accuracy of location from this provider, as one |
| * of the constants Criteria.ACCURACY_*. |
| */ |
| public int getAccuracy() { |
| return Criteria.ACCURACY_FINE; |
| } |
| |
| /** |
| * Enables this provider. When enabled, calls to getStatus() |
| * must be handled. Hardware may be started up |
| * when the provider is enabled. |
| */ |
| public void enable() { |
| synchronized (mHandler) { |
| mHandler.removeMessages(ENABLE); |
| Message m = Message.obtain(mHandler, ENABLE); |
| m.arg1 = 1; |
| mHandler.sendMessage(m); |
| } |
| } |
| |
| private void handleEnable() { |
| if (DEBUG) Log.d(TAG, "handleEnable"); |
| if (mEnabled) return; |
| mEnabled = native_init(); |
| |
| if (mEnabled) { |
| if (mSuplServerHost != null) { |
| native_set_agps_server(AGPS_TYPE_SUPL, mSuplServerHost, mSuplServerPort); |
| } |
| if (mC2KServerHost != null) { |
| native_set_agps_server(AGPS_TYPE_C2K, mC2KServerHost, mC2KServerPort); |
| } |
| |
| // run event listener thread while we are enabled |
| mEventThread = new GpsEventThread(); |
| mEventThread.start(); |
| } else { |
| Log.w(TAG, "Failed to enable location provider"); |
| } |
| } |
| |
| /** |
| * Disables this provider. When disabled, calls to getStatus() |
| * need not be handled. Hardware may be shut |
| * down while the provider is disabled. |
| */ |
| public void disable() { |
| synchronized (mHandler) { |
| mHandler.removeMessages(ENABLE); |
| Message m = Message.obtain(mHandler, ENABLE); |
| m.arg1 = 0; |
| mHandler.sendMessage(m); |
| } |
| } |
| |
| private void handleDisable() { |
| if (DEBUG) Log.d(TAG, "handleDisable"); |
| if (!mEnabled) return; |
| |
| mEnabled = false; |
| stopNavigating(); |
| native_disable(); |
| |
| // make sure our event thread exits |
| if (mEventThread != null) { |
| try { |
| mEventThread.join(); |
| } catch (InterruptedException e) { |
| Log.w(TAG, "InterruptedException when joining mEventThread"); |
| } |
| mEventThread = null; |
| } |
| |
| // do this before releasing wakelock |
| native_cleanup(); |
| |
| // The GpsEventThread does not wait for the GPS to shutdown |
| // so we need to report the GPS_STATUS_ENGINE_OFF event here |
| if (mNavigating) { |
| reportStatus(GPS_STATUS_SESSION_END); |
| } |
| if (mEngineOn) { |
| reportStatus(GPS_STATUS_ENGINE_OFF); |
| } |
| } |
| |
| public boolean isEnabled() { |
| return mEnabled; |
| } |
| |
| public int getStatus(Bundle extras) { |
| if (extras != null) { |
| extras.putInt("satellites", mSvCount); |
| } |
| return mStatus; |
| } |
| |
| private void updateStatus(int status, int svCount) { |
| if (status != mStatus || svCount != mSvCount) { |
| mStatus = status; |
| mSvCount = svCount; |
| mLocationExtras.putInt("satellites", svCount); |
| mStatusUpdateTime = SystemClock.elapsedRealtime(); |
| } |
| } |
| |
| public long getStatusUpdateTime() { |
| return mStatusUpdateTime; |
| } |
| |
| public void enableLocationTracking(boolean enable) { |
| synchronized (mHandler) { |
| mHandler.removeMessages(ENABLE_TRACKING); |
| Message m = Message.obtain(mHandler, ENABLE_TRACKING); |
| m.arg1 = (enable ? 1 : 0); |
| mHandler.sendMessage(m); |
| } |
| } |
| |
| private void handleEnableLocationTracking(boolean enable) { |
| if (enable) { |
| mTTFF = 0; |
| mLastFixTime = 0; |
| startNavigating(); |
| } else { |
| mAlarmManager.cancel(mWakeupIntent); |
| mAlarmManager.cancel(mTimeoutIntent); |
| stopNavigating(); |
| } |
| } |
| |
| public void setMinTime(long minTime) { |
| if (DEBUG) Log.d(TAG, "setMinTime " + minTime); |
| |
| if (minTime >= 0) { |
| int interval = (int)(minTime/1000); |
| if (interval < 1) { |
| interval = 1; |
| } |
| mFixInterval = interval; |
| } |
| } |
| |
| public String getInternalState() { |
| return native_get_internal_state(); |
| } |
| |
| private final class Listener implements IBinder.DeathRecipient { |
| final IGpsStatusListener mListener; |
| |
| int mSensors = 0; |
| |
| Listener(IGpsStatusListener listener) { |
| mListener = listener; |
| } |
| |
| public void binderDied() { |
| if (DEBUG) Log.d(TAG, "GPS status listener died"); |
| |
| synchronized(mListeners) { |
| mListeners.remove(this); |
| } |
| if (mListener != null) { |
| mListener.asBinder().unlinkToDeath(this, 0); |
| } |
| } |
| } |
| |
| public void addListener(int uid) { |
| Message m = Message.obtain(mHandler, ADD_LISTENER); |
| m.arg1 = uid; |
| mHandler.sendMessage(m); |
| } |
| |
| private void handleAddListener(int uid) { |
| synchronized(mListeners) { |
| if (mClientUids.indexOfKey(uid) >= 0) { |
| // Shouldn't be here -- already have this uid. |
| Log.w(TAG, "Duplicate add listener for uid " + uid); |
| return; |
| } |
| mClientUids.put(uid, 0); |
| if (mNavigating) { |
| try { |
| mBatteryStats.noteStartGps(uid); |
| } catch (RemoteException e) { |
| Log.w(TAG, "RemoteException in addListener"); |
| } |
| } |
| } |
| } |
| |
| public void removeListener(int uid) { |
| Message m = Message.obtain(mHandler, REMOVE_LISTENER); |
| m.arg1 = uid; |
| mHandler.sendMessage(m); |
| } |
| |
| private void handleRemoveListener(int uid) { |
| synchronized(mListeners) { |
| if (mClientUids.indexOfKey(uid) < 0) { |
| // Shouldn't be here -- don't have this uid. |
| Log.w(TAG, "Unneeded remove listener for uid " + uid); |
| return; |
| } |
| mClientUids.delete(uid); |
| if (mNavigating) { |
| try { |
| mBatteryStats.noteStopGps(uid); |
| } catch (RemoteException e) { |
| Log.w(TAG, "RemoteException in removeListener"); |
| } |
| } |
| } |
| } |
| |
| public boolean sendExtraCommand(String command, Bundle extras) { |
| |
| if ("delete_aiding_data".equals(command)) { |
| return deleteAidingData(extras); |
| } |
| if ("force_time_injection".equals(command)) { |
| mHandler.removeMessages(INJECT_NTP_TIME); |
| mHandler.sendMessage(Message.obtain(mHandler, INJECT_NTP_TIME)); |
| return true; |
| } |
| if ("force_xtra_injection".equals(command)) { |
| if (native_supports_xtra()) { |
| xtraDownloadRequest(); |
| return true; |
| } |
| return false; |
| } |
| |
| Log.w(TAG, "sendExtraCommand: unknown command " + command); |
| return false; |
| } |
| |
| private boolean deleteAidingData(Bundle extras) { |
| int flags; |
| |
| if (extras == null) { |
| flags = GPS_DELETE_ALL; |
| } else { |
| flags = 0; |
| if (extras.getBoolean("ephemeris")) flags |= GPS_DELETE_EPHEMERIS; |
| if (extras.getBoolean("almanac")) flags |= GPS_DELETE_ALMANAC; |
| if (extras.getBoolean("position")) flags |= GPS_DELETE_POSITION; |
| if (extras.getBoolean("time")) flags |= GPS_DELETE_TIME; |
| if (extras.getBoolean("iono")) flags |= GPS_DELETE_IONO; |
| if (extras.getBoolean("utc")) flags |= GPS_DELETE_UTC; |
| if (extras.getBoolean("health")) flags |= GPS_DELETE_HEALTH; |
| if (extras.getBoolean("svdir")) flags |= GPS_DELETE_SVDIR; |
| if (extras.getBoolean("svsteer")) flags |= GPS_DELETE_SVSTEER; |
| if (extras.getBoolean("sadata")) flags |= GPS_DELETE_SADATA; |
| if (extras.getBoolean("rti")) flags |= GPS_DELETE_RTI; |
| if (extras.getBoolean("celldb-info")) flags |= GPS_DELETE_CELLDB_INFO; |
| if (extras.getBoolean("all")) flags |= GPS_DELETE_ALL; |
| } |
| |
| if (flags != 0) { |
| native_delete_aiding_data(flags); |
| return true; |
| } |
| |
| return false; |
| } |
| |
| private void startNavigating() { |
| if (!mStarted) { |
| if (DEBUG) Log.d(TAG, "startNavigating"); |
| mStarted = true; |
| int positionMode; |
| if (Settings.Secure.getInt(mContext.getContentResolver(), |
| Settings.Secure.ASSISTED_GPS_ENABLED, 1) != 0) { |
| positionMode = GPS_POSITION_MODE_MS_BASED; |
| } else { |
| positionMode = GPS_POSITION_MODE_STANDALONE; |
| } |
| |
| if (!native_start(positionMode, false, 1)) { |
| mStarted = false; |
| Log.e(TAG, "native_start failed in startNavigating()"); |
| return; |
| } |
| |
| // reset SV count to zero |
| updateStatus(LocationProvider.TEMPORARILY_UNAVAILABLE, 0); |
| mFixCount = 0; |
| mFixRequestTime = System.currentTimeMillis(); |
| // set timer to give up if we do not receive a fix within NO_FIX_TIMEOUT |
| // and our fix interval is not short |
| if (mFixInterval >= NO_FIX_TIMEOUT) { |
| mAlarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, |
| SystemClock.elapsedRealtime() + NO_FIX_TIMEOUT * 1000, mTimeoutIntent); |
| } |
| } |
| } |
| |
| private void stopNavigating() { |
| if (DEBUG) Log.d(TAG, "stopNavigating"); |
| if (mStarted) { |
| mStarted = false; |
| native_stop(); |
| mTTFF = 0; |
| mLastFixTime = 0; |
| mLocationFlags = LOCATION_INVALID; |
| |
| // reset SV count to zero |
| updateStatus(LocationProvider.TEMPORARILY_UNAVAILABLE, 0); |
| } |
| } |
| |
| private void hibernate() { |
| // stop GPS until our next fix interval arrives |
| stopNavigating(); |
| mFixCount = 0; |
| mAlarmManager.cancel(mTimeoutIntent); |
| mAlarmManager.cancel(mWakeupIntent); |
| long now = SystemClock.elapsedRealtime(); |
| mAlarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP, |
| SystemClock.elapsedRealtime() + mFixInterval * 1000, mWakeupIntent); |
| } |
| |
| /** |
| * called from native code to update our position. |
| */ |
| private void reportLocation(int flags, double latitude, double longitude, double altitude, |
| float speed, float bearing, float accuracy, long timestamp) { |
| if (VERBOSE) Log.v(TAG, "reportLocation lat: " + latitude + " long: " + longitude + |
| " timestamp: " + timestamp); |
| |
| mLastFixTime = System.currentTimeMillis(); |
| // report time to first fix |
| if (mTTFF == 0 && (flags & LOCATION_HAS_LAT_LONG) == LOCATION_HAS_LAT_LONG) { |
| mTTFF = (int)(mLastFixTime - mFixRequestTime); |
| if (DEBUG) Log.d(TAG, "TTFF: " + mTTFF); |
| |
| // notify status listeners |
| synchronized(mListeners) { |
| int size = mListeners.size(); |
| for (int i = 0; i < size; i++) { |
| Listener listener = mListeners.get(i); |
| try { |
| listener.mListener.onFirstFix(mTTFF); |
| } catch (RemoteException e) { |
| Log.w(TAG, "RemoteException in stopNavigating"); |
| mListeners.remove(listener); |
| // adjust for size of list changing |
| size--; |
| } |
| } |
| } |
| } |
| |
| synchronized (mLocation) { |
| mLocationFlags = flags; |
| if ((flags & LOCATION_HAS_LAT_LONG) == LOCATION_HAS_LAT_LONG) { |
| mLocation.setLatitude(latitude); |
| mLocation.setLongitude(longitude); |
| mLocation.setTime(timestamp); |
| } |
| if ((flags & LOCATION_HAS_ALTITUDE) == LOCATION_HAS_ALTITUDE) { |
| mLocation.setAltitude(altitude); |
| } else { |
| mLocation.removeAltitude(); |
| } |
| if ((flags & LOCATION_HAS_SPEED) == LOCATION_HAS_SPEED) { |
| mLocation.setSpeed(speed); |
| } else { |
| mLocation.removeSpeed(); |
| } |
| if ((flags & LOCATION_HAS_BEARING) == LOCATION_HAS_BEARING) { |
| mLocation.setBearing(bearing); |
| } else { |
| mLocation.removeBearing(); |
| } |
| if ((flags & LOCATION_HAS_ACCURACY) == LOCATION_HAS_ACCURACY) { |
| mLocation.setAccuracy(accuracy); |
| } else { |
| mLocation.removeAccuracy(); |
| } |
| |
| try { |
| mLocationManager.reportLocation(mLocation, false); |
| } catch (RemoteException e) { |
| Log.e(TAG, "RemoteException calling reportLocation"); |
| } |
| } |
| |
| if (mStarted && mStatus != LocationProvider.AVAILABLE) { |
| // we still want to time out if we do not receive MIN_FIX_COUNT |
| // within the time out and we are requesting infrequent fixes |
| if (mFixInterval < NO_FIX_TIMEOUT) { |
| mAlarmManager.cancel(mTimeoutIntent); |
| } |
| |
| // send an intent to notify that the GPS is receiving fixes. |
| Intent intent = new Intent(LocationManager.GPS_FIX_CHANGE_ACTION); |
| intent.putExtra(LocationManager.EXTRA_GPS_ENABLED, true); |
| mContext.sendBroadcast(intent); |
| updateStatus(LocationProvider.AVAILABLE, mSvCount); |
| } |
| |
| if (mFixCount++ >= MIN_FIX_COUNT && mFixInterval > 1) { |
| if (DEBUG) Log.d(TAG, "exceeded MIN_FIX_COUNT"); |
| hibernate(); |
| } |
| } |
| |
| /** |
| * called from native code to update our status |
| */ |
| private void reportStatus(int status) { |
| if (VERBOSE) Log.v(TAG, "reportStatus status: " + status); |
| |
| synchronized(mListeners) { |
| boolean wasNavigating = mNavigating; |
| |
| switch (status) { |
| case GPS_STATUS_SESSION_BEGIN: |
| mNavigating = true; |
| mEngineOn = true; |
| break; |
| case GPS_STATUS_SESSION_END: |
| mNavigating = false; |
| break; |
| case GPS_STATUS_ENGINE_ON: |
| mEngineOn = true; |
| break; |
| case GPS_STATUS_ENGINE_OFF: |
| mEngineOn = false; |
| mNavigating = false; |
| break; |
| } |
| |
| // beware, the events can come out of order |
| if ((mNavigating || mEngineOn) && !mWakeLock.isHeld()) { |
| if (DEBUG) Log.d(TAG, "Acquiring wakelock"); |
| mWakeLock.acquire(); |
| } |
| |
| if (wasNavigating != mNavigating) { |
| int size = mListeners.size(); |
| for (int i = 0; i < size; i++) { |
| Listener listener = mListeners.get(i); |
| try { |
| if (mNavigating) { |
| listener.mListener.onGpsStarted(); |
| } else { |
| listener.mListener.onGpsStopped(); |
| } |
| } catch (RemoteException e) { |
| Log.w(TAG, "RemoteException in reportStatus"); |
| mListeners.remove(listener); |
| // adjust for size of list changing |
| size--; |
| } |
| } |
| |
| try { |
| // update battery stats |
| for (int i=mClientUids.size() - 1; i >= 0; i--) { |
| int uid = mClientUids.keyAt(i); |
| if (mNavigating) { |
| mBatteryStats.noteStartGps(uid); |
| } else { |
| mBatteryStats.noteStopGps(uid); |
| } |
| } |
| } catch (RemoteException e) { |
| Log.w(TAG, "RemoteException in reportStatus"); |
| } |
| |
| // send an intent to notify that the GPS has been enabled or disabled. |
| Intent intent = new Intent(LocationManager.GPS_ENABLED_CHANGE_ACTION); |
| intent.putExtra(LocationManager.EXTRA_GPS_ENABLED, mNavigating); |
| mContext.sendBroadcast(intent); |
| } |
| |
| // beware, the events can come out of order |
| if (!mNavigating && !mEngineOn && mWakeLock.isHeld()) { |
| if (DEBUG) Log.d(TAG, "Releasing wakelock"); |
| mWakeLock.release(); |
| } |
| } |
| } |
| |
| /** |
| * called from native code to update SV info |
| */ |
| private void reportSvStatus() { |
| |
| int svCount = native_read_sv_status(mSvs, mSnrs, mSvElevations, mSvAzimuths, mSvMasks); |
| |
| synchronized(mListeners) { |
| int size = mListeners.size(); |
| for (int i = 0; i < size; i++) { |
| Listener listener = mListeners.get(i); |
| try { |
| listener.mListener.onSvStatusChanged(svCount, mSvs, mSnrs, |
| mSvElevations, mSvAzimuths, mSvMasks[EPHEMERIS_MASK], |
| mSvMasks[ALMANAC_MASK], mSvMasks[USED_FOR_FIX_MASK]); |
| } catch (RemoteException e) { |
| Log.w(TAG, "RemoteException in reportSvInfo"); |
| mListeners.remove(listener); |
| // adjust for size of list changing |
| size--; |
| } |
| } |
| } |
| |
| if (VERBOSE) { |
| Log.v(TAG, "SV count: " + svCount + |
| " ephemerisMask: " + Integer.toHexString(mSvMasks[EPHEMERIS_MASK]) + |
| " almanacMask: " + Integer.toHexString(mSvMasks[ALMANAC_MASK])); |
| for (int i = 0; i < svCount; i++) { |
| Log.v(TAG, "sv: " + mSvs[i] + |
| " snr: " + (float)mSnrs[i]/10 + |
| " elev: " + mSvElevations[i] + |
| " azimuth: " + mSvAzimuths[i] + |
| ((mSvMasks[EPHEMERIS_MASK] & (1 << (mSvs[i] - 1))) == 0 ? " " : " E") + |
| ((mSvMasks[ALMANAC_MASK] & (1 << (mSvs[i] - 1))) == 0 ? " " : " A") + |
| ((mSvMasks[USED_FOR_FIX_MASK] & (1 << (mSvs[i] - 1))) == 0 ? "" : "U")); |
| } |
| } |
| |
| updateStatus(mStatus, svCount); |
| |
| if (mNavigating && mStatus == LocationProvider.AVAILABLE && mLastFixTime > 0 && |
| System.currentTimeMillis() - mLastFixTime > RECENT_FIX_TIMEOUT * 1000) { |
| // send an intent to notify that the GPS is no longer receiving fixes. |
| Intent intent = new Intent(LocationManager.GPS_FIX_CHANGE_ACTION); |
| intent.putExtra(LocationManager.EXTRA_GPS_ENABLED, false); |
| mContext.sendBroadcast(intent); |
| updateStatus(LocationProvider.TEMPORARILY_UNAVAILABLE, mSvCount); |
| } |
| } |
| |
| /** |
| * called from native code to update AGPS status |
| */ |
| private void reportAGpsStatus(int type, int status) { |
| switch (status) { |
| case GPS_REQUEST_AGPS_DATA_CONN: |
| int result = mConnMgr.startUsingNetworkFeature( |
| ConnectivityManager.TYPE_MOBILE, Phone.FEATURE_ENABLE_SUPL); |
| if (result == Phone.APN_ALREADY_ACTIVE) { |
| if (mAGpsApn != null) { |
| native_agps_data_conn_open(mAGpsApn); |
| mAGpsDataConnectionState = AGPS_DATA_CONNECTION_OPEN; |
| } else { |
| Log.e(TAG, "mAGpsApn not set when receiving Phone.APN_ALREADY_ACTIVE"); |
| native_agps_data_conn_failed(); |
| } |
| } else if (result == Phone.APN_REQUEST_STARTED) { |
| mAGpsDataConnectionState = AGPS_DATA_CONNECTION_OPENING; |
| } else { |
| native_agps_data_conn_failed(); |
| } |
| break; |
| case GPS_RELEASE_AGPS_DATA_CONN: |
| if (mAGpsDataConnectionState != AGPS_DATA_CONNECTION_CLOSED) { |
| mConnMgr.stopUsingNetworkFeature( |
| ConnectivityManager.TYPE_MOBILE, Phone.FEATURE_ENABLE_SUPL); |
| native_agps_data_conn_closed(); |
| mAGpsDataConnectionState = AGPS_DATA_CONNECTION_CLOSED; |
| } |
| break; |
| case GPS_AGPS_DATA_CONNECTED: |
| // Log.d(TAG, "GPS_AGPS_DATA_CONNECTED"); |
| break; |
| case GPS_AGPS_DATA_CONN_DONE: |
| // Log.d(TAG, "GPS_AGPS_DATA_CONN_DONE"); |
| break; |
| case GPS_AGPS_DATA_CONN_FAILED: |
| // Log.d(TAG, "GPS_AGPS_DATA_CONN_FAILED"); |
| break; |
| } |
| } |
| |
| /** |
| * called from native code to report NMEA data received |
| */ |
| private void reportNmea(int index, long timestamp) { |
| synchronized(mListeners) { |
| int size = mListeners.size(); |
| if (size > 0) { |
| // don't bother creating the String if we have no listeners |
| int length = native_read_nmea(index, mNmeaBuffer, mNmeaBuffer.length); |
| String nmea = new String(mNmeaBuffer, 0, length); |
| |
| for (int i = 0; i < size; i++) { |
| Listener listener = mListeners.get(i); |
| try { |
| listener.mListener.onNmeaReceived(timestamp, nmea); |
| } catch (RemoteException e) { |
| Log.w(TAG, "RemoteException in reportNmea"); |
| mListeners.remove(listener); |
| // adjust for size of list changing |
| size--; |
| } |
| } |
| } |
| } |
| } |
| |
| /** |
| * called from native code to request XTRA data |
| */ |
| private void xtraDownloadRequest() { |
| if (DEBUG) Log.d(TAG, "xtraDownloadRequest"); |
| mHandler.removeMessages(DOWNLOAD_XTRA_DATA); |
| mHandler.sendMessage(Message.obtain(mHandler, DOWNLOAD_XTRA_DATA)); |
| } |
| |
| //============================================================= |
| // NI Client support |
| //============================================================= |
| private final INetInitiatedListener mNetInitiatedListener = new INetInitiatedListener.Stub() { |
| // Sends a response for an NI reqeust to HAL. |
| public boolean sendNiResponse(int notificationId, int userResponse) |
| { |
| // TODO Add Permission check |
| |
| StringBuilder extrasBuf = new StringBuilder(); |
| |
| if (DEBUG) Log.d(TAG, "sendNiResponse, notifId: " + notificationId + |
| ", response: " + userResponse); |
| |
| native_send_ni_response(notificationId, userResponse); |
| |
| return true; |
| } |
| }; |
| |
| public INetInitiatedListener getNetInitiatedListener() { |
| return mNetInitiatedListener; |
| } |
| |
| // Called by JNI function to report an NI request. |
| @SuppressWarnings("deprecation") |
| public void reportNiNotification( |
| int notificationId, |
| int niType, |
| int notifyFlags, |
| int timeout, |
| int defaultResponse, |
| String requestorId, |
| String text, |
| int requestorIdEncoding, |
| int textEncoding, |
| String extras // Encoded extra data |
| ) |
| { |
| Log.i(TAG, "reportNiNotification: entered"); |
| Log.i(TAG, "notificationId: " + notificationId + |
| ", niType: " + niType + |
| ", notifyFlags: " + notifyFlags + |
| ", timeout: " + timeout + |
| ", defaultResponse: " + defaultResponse); |
| |
| Log.i(TAG, "requestorId: " + requestorId + |
| ", text: " + text + |
| ", requestorIdEncoding: " + requestorIdEncoding + |
| ", textEncoding: " + textEncoding); |
| |
| GpsNiNotification notification = new GpsNiNotification(); |
| |
| notification.notificationId = notificationId; |
| notification.niType = niType; |
| notification.needNotify = (notifyFlags & GpsNetInitiatedHandler.GPS_NI_NEED_NOTIFY) != 0; |
| notification.needVerify = (notifyFlags & GpsNetInitiatedHandler.GPS_NI_NEED_VERIFY) != 0; |
| notification.privacyOverride = (notifyFlags & GpsNetInitiatedHandler.GPS_NI_PRIVACY_OVERRIDE) != 0; |
| notification.timeout = timeout; |
| notification.defaultResponse = defaultResponse; |
| notification.requestorId = requestorId; |
| notification.text = text; |
| notification.requestorIdEncoding = requestorIdEncoding; |
| notification.textEncoding = textEncoding; |
| |
| // Process extras, assuming the format is |
| // one of more lines of "key = value" |
| Bundle bundle = new Bundle(); |
| |
| if (extras == null) extras = ""; |
| Properties extraProp = new Properties(); |
| |
| try { |
| extraProp.load(new StringBufferInputStream(extras)); |
| } |
| catch (IOException e) |
| { |
| Log.e(TAG, "reportNiNotification cannot parse extras data: " + extras); |
| } |
| |
| for (Entry<Object, Object> ent : extraProp.entrySet()) |
| { |
| bundle.putString((String) ent.getKey(), (String) ent.getValue()); |
| } |
| |
| notification.extras = bundle; |
| |
| mNIHandler.handleNiNotification(notification); |
| } |
| |
| // this thread is used to receive events from the native code. |
| // native_wait_for_event() will callback to us via reportLocation(), reportStatus(), etc. |
| // this is necessary because native code cannot call Java on a thread that the JVM does |
| // not know about. |
| private final class GpsEventThread extends Thread { |
| |
| public GpsEventThread() { |
| super("GpsEventThread"); |
| } |
| |
| public void run() { |
| if (DEBUG) Log.d(TAG, "GpsEventThread starting"); |
| // Exit as soon as disable() is called instead of waiting for the GPS to stop. |
| while (mEnabled) { |
| // this will wait for an event from the GPS, |
| // which will be reported via reportLocation or reportStatus |
| native_wait_for_event(); |
| } |
| if (DEBUG) Log.d(TAG, "GpsEventThread exiting"); |
| } |
| } |
| |
| private final class ProviderHandler extends Handler { |
| @Override |
| public void handleMessage(Message msg) |
| { |
| switch (msg.what) { |
| case ENABLE: |
| if (msg.arg1 == 1) { |
| handleEnable(); |
| } else { |
| handleDisable(); |
| } |
| break; |
| case ENABLE_TRACKING: |
| handleEnableLocationTracking(msg.arg1 == 1); |
| break; |
| case UPDATE_NETWORK_STATE: |
| handleUpdateNetworkState(msg.arg1, (NetworkInfo)msg.obj); |
| break; |
| case INJECT_NTP_TIME: |
| handleInjectNtpTime(); |
| break; |
| case DOWNLOAD_XTRA_DATA: |
| if (native_supports_xtra()) { |
| handleDownloadXtraData(); |
| } |
| break; |
| case UPDATE_LOCATION: |
| handleUpdateLocation((Location)msg.obj); |
| break; |
| case ADD_LISTENER: |
| handleAddListener(msg.arg1); |
| break; |
| case REMOVE_LISTENER: |
| handleRemoveListener(msg.arg1); |
| break; |
| } |
| } |
| }; |
| |
| private final class GpsLocationProviderThread extends Thread { |
| |
| public GpsLocationProviderThread() { |
| super("GpsLocationProvider"); |
| } |
| |
| public void run() { |
| Process.setThreadPriority(Process.THREAD_PRIORITY_BACKGROUND); |
| initialize(); |
| Looper.prepare(); |
| mHandler = new ProviderHandler(); |
| // signal when we are initialized and ready to go |
| mInitializedLatch.countDown(); |
| Looper.loop(); |
| } |
| } |
| |
| // for GPS SV statistics |
| private static final int MAX_SVS = 32; |
| private static final int EPHEMERIS_MASK = 0; |
| private static final int ALMANAC_MASK = 1; |
| private static final int USED_FOR_FIX_MASK = 2; |
| |
| // preallocated arrays, to avoid memory allocation in reportStatus() |
| private int mSvs[] = new int[MAX_SVS]; |
| private float mSnrs[] = new float[MAX_SVS]; |
| private float mSvElevations[] = new float[MAX_SVS]; |
| private float mSvAzimuths[] = new float[MAX_SVS]; |
| private int mSvMasks[] = new int[3]; |
| private int mSvCount; |
| // preallocated to avoid memory allocation in reportNmea() |
| private byte[] mNmeaBuffer = new byte[120]; |
| |
| static { class_init_native(); } |
| private static native void class_init_native(); |
| private static native boolean native_is_supported(); |
| |
| private native boolean native_init(); |
| private native void native_disable(); |
| private native void native_cleanup(); |
| private native boolean native_start(int positionMode, boolean singleFix, int fixInterval); |
| private native boolean native_stop(); |
| private native void native_set_fix_frequency(int fixFrequency); |
| private native void native_delete_aiding_data(int flags); |
| private native void native_wait_for_event(); |
| // returns number of SVs |
| // mask[0] is ephemeris mask and mask[1] is almanac mask |
| private native int native_read_sv_status(int[] svs, float[] snrs, |
| float[] elevations, float[] azimuths, int[] masks); |
| private native int native_read_nmea(int index, byte[] buffer, int bufferSize); |
| private native void native_inject_location(double latitude, double longitude, float accuracy); |
| |
| // XTRA Support |
| private native void native_inject_time(long time, long timeReference, int uncertainty); |
| private native boolean native_supports_xtra(); |
| private native void native_inject_xtra_data(byte[] data, int length); |
| |
| // DEBUG Support |
| private native String native_get_internal_state(); |
| |
| // AGPS Support |
| private native void native_agps_data_conn_open(String apn); |
| private native void native_agps_data_conn_closed(); |
| private native void native_agps_data_conn_failed(); |
| private native void native_set_agps_server(int type, String hostname, int port); |
| |
| // Network-initiated (NI) Support |
| private native void native_send_ni_response(int notificationId, int userResponse); |
| } |
