| /* |
| * 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.internal.location; |
| |
| 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.ILocationProvider; |
| import android.location.Location; |
| import android.location.LocationManager; |
| import android.location.LocationProvider; |
| import android.net.ConnectivityManager; |
| import android.net.SntpClient; |
| import android.os.Bundle; |
| import android.os.IBinder; |
| import android.os.RemoteException; |
| import android.os.ServiceManager; |
| import android.os.SystemClock; |
| import android.util.Config; |
| import android.util.Log; |
| import android.util.SparseIntArray; |
| |
| import com.android.internal.app.IBatteryStats; |
| import com.android.internal.telephony.Phone; |
| import com.android.internal.telephony.TelephonyIntents; |
| |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.IOException; |
| import java.net.InetAddress; |
| import java.net.UnknownHostException; |
| import java.util.ArrayList; |
| import java.util.Properties; |
| |
| /** |
| * A GPS implementation of LocationProvider used by LocationManager. |
| * |
| * {@hide} |
| */ |
| public class GpsLocationProvider extends ILocationProvider.Stub { |
| |
| private static final String TAG = "GpsLocationProvider"; |
| |
| /** |
| * Broadcast intent action indicating that the GPS has either been |
| * enabled or disabled. An intent extra provides this state as a boolean, |
| * where {@code true} means enabled. |
| * @see #EXTRA_ENABLED |
| * |
| * {@hide} |
| */ |
| public static final String GPS_ENABLED_CHANGE_ACTION = |
| "android.location.GPS_ENABLED_CHANGE"; |
| |
| /** |
| * Broadcast intent action indicating that the GPS has either started or |
| * stopped receiving GPS fixes. An intent extra provides this state as a |
| * boolean, where {@code true} means that the GPS is actively receiving fixes. |
| * @see #EXTRA_ENABLED |
| * |
| * {@hide} |
| */ |
| public static final String GPS_FIX_CHANGE_ACTION = |
| "android.location.GPS_FIX_CHANGE"; |
| |
| /** |
| * The lookup key for a boolean that indicates whether GPS is enabled or |
| * disabled. {@code true} means GPS is enabled. Retrieve it with |
| * {@link android.content.Intent#getBooleanExtra(String,boolean)}. |
| * |
| * {@hide} |
| */ |
| public static final String EXTRA_ENABLED = "enabled"; |
| |
| // 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 GpsSuplStatusValue defines in gps.h |
| /** SUPL status event values. */ |
| private static final int GPS_REQUEST_SUPL_DATA_CONN = 1; |
| private static final int GPS_RELEASE_SUPL_DATA_CONN = 2; |
| private static final int GPS_SUPL_DATA_CONNECTED = 3; |
| private static final int GPS_SUPL_DATA_CONN_DONE = 4; |
| private static final int GPS_SUPL_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 GpsLocationProvider.java |
| 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; |
| |
| // for mSuplDataConnectionState |
| private static final int SUPL_DATA_CONNECTION_CLOSED = 0; |
| private static final int SUPL_DATA_CONNECTION_OPENING = 1; |
| private static final int SUPL_DATA_CONNECTION_OPEN = 2; |
| |
| 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 * 1000; |
| |
| // true if we are enabled |
| private boolean mEnabled; |
| |
| // true if we have network connectivity |
| private boolean mNetworkAvailable; |
| |
| // true if GPS is navigating |
| private boolean mNavigating; |
| |
| // requested frequency of fixes, in seconds |
| private int mFixInterval = 1; |
| |
| private int mPositionMode = GPS_POSITION_MODE_STANDALONE; |
| |
| // 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 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>(); |
| private GpsEventThread mEventThread; |
| private GpsNetworkThread mNetworkThread; |
| private Object mNetworkThreadLock = new Object(); |
| |
| private String mSuplHost; |
| private int mSuplPort; |
| private boolean mSetSuplServer; |
| private String mSuplApn; |
| private int mSuplDataConnectionState; |
| private final ConnectivityManager mConnMgr; |
| |
| 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; |
| |
| 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 class TelephonyBroadcastReceiver extends BroadcastReceiver { |
| @Override public void onReceive(Context context, Intent intent) { |
| String action = intent.getAction(); |
| |
| if (action.equals(TelephonyIntents.ACTION_ANY_DATA_CONNECTION_STATE_CHANGED)) { |
| String state = intent.getStringExtra(Phone.STATE_KEY); |
| String apnName = intent.getStringExtra(Phone.DATA_APN_KEY); |
| String reason = intent.getStringExtra(Phone.STATE_CHANGE_REASON_KEY); |
| |
| if (Config.LOGD) { |
| Log.d(TAG, "state: " + state + " apnName: " + apnName + " reason: " + reason); |
| } |
| if ("CONNECTED".equals(state) && apnName != null && apnName.length() > 0) { |
| mSuplApn = apnName; |
| if (mSuplDataConnectionState == SUPL_DATA_CONNECTION_OPENING) { |
| native_supl_data_conn_open(mSuplApn); |
| mSuplDataConnectionState = SUPL_DATA_CONNECTION_OPEN; |
| } |
| } |
| } |
| } |
| } |
| |
| public static boolean isSupported() { |
| return native_is_supported(); |
| } |
| |
| public GpsLocationProvider(Context context, ILocationManager locationManager) { |
| mContext = context; |
| mLocationManager = locationManager; |
| |
| TelephonyBroadcastReceiver receiver = new TelephonyBroadcastReceiver(); |
| IntentFilter intentFilter = new IntentFilter(); |
| intentFilter.addAction(TelephonyIntents.ACTION_ANY_DATA_CONNECTION_STATE_CHANGED); |
| context.registerReceiver(receiver, intentFilter); |
| |
| 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); |
| mSuplHost = mProperties.getProperty("SUPL_HOST"); |
| String suplPortString = mProperties.getProperty("SUPL_PORT"); |
| if (mSuplHost != null && suplPortString != null) { |
| try { |
| mSuplPort = Integer.parseInt(suplPortString); |
| mSetSuplServer = true; |
| } catch (NumberFormatException e) { |
| Log.e(TAG, "unable to parse SUPL_PORT: " + suplPortString); |
| } |
| } |
| } catch (IOException e) { |
| Log.w(TAG, "Could not open GPS configuration file " + PROPERTIES_FILE); |
| } |
| } |
| |
| /** |
| * Returns true if the provider requires access to a |
| * data network (e.g., the Internet), false otherwise. |
| */ |
| public boolean requiresNetwork() { |
| // We want updateNetworkState() to get called when the network state changes |
| // for XTRA and NTP time injection support. |
| return (mNtpServer != null || native_supports_xtra() || mSuplHost != null); |
| } |
| |
| public void updateNetworkState(int state) { |
| mNetworkAvailable = (state == LocationProvider.AVAILABLE); |
| |
| if (Config.LOGD) { |
| Log.d(TAG, "updateNetworkState " + (mNetworkAvailable ? "available" : "unavailable")); |
| } |
| |
| if (mNetworkAvailable && mNetworkThread != null && mEnabled) { |
| // signal the network thread when the network becomes available |
| mNetworkThread.signal(); |
| } |
| } |
| |
| /** |
| * 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 synchronized void enable() { |
| if (Config.LOGD) Log.d(TAG, "enable"); |
| if (mEnabled) return; |
| mEnabled = native_init(); |
| |
| if (mEnabled) { |
| // run event listener thread while we are enabled |
| mEventThread = new GpsEventThread(); |
| mEventThread.start(); |
| |
| if (requiresNetwork()) { |
| // run network thread for NTP and XTRA support |
| if (mNetworkThread == null) { |
| mNetworkThread = new GpsNetworkThread(); |
| mNetworkThread.start(); |
| } else { |
| mNetworkThread.signal(); |
| } |
| } |
| } 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 synchronized void disable() { |
| if (Config.LOGD) Log.d(TAG, "disable"); |
| 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; |
| } |
| |
| if (mNetworkThread != null) { |
| mNetworkThread.setDone(); |
| mNetworkThread = null; |
| } |
| |
| // 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_ENGINE_OFF); |
| } |
| |
| native_cleanup(); |
| } |
| |
| 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) { |
| if (enable) { |
| mFixRequestTime = System.currentTimeMillis(); |
| mTTFF = 0; |
| mLastFixTime = 0; |
| startNavigating(); |
| } else { |
| stopNavigating(); |
| } |
| } |
| |
| public void setMinTime(long minTime) { |
| if (Config.LOGD) Log.d(TAG, "setMinTime " + minTime); |
| |
| if (minTime >= 0) { |
| int interval = (int)(minTime/1000); |
| if (interval < 1) { |
| interval = 1; |
| } |
| mFixInterval = interval; |
| native_set_fix_frequency(mFixInterval); |
| } |
| } |
| |
| private final class Listener implements IBinder.DeathRecipient { |
| final IGpsStatusListener mListener; |
| |
| int mSensors = 0; |
| |
| Listener(IGpsStatusListener listener) { |
| mListener = listener; |
| } |
| |
| public void binderDied() { |
| if (Config.LOGD) Log.d(TAG, "GPS status listener died"); |
| |
| synchronized(mListeners) { |
| mListeners.remove(this); |
| } |
| } |
| } |
| |
| public void wakeLockAcquired() { |
| } |
| |
| public void wakeLockReleased() { |
| } |
| |
| public void addListener(int uid) { |
| mClientUids.put(uid, 0); |
| if (mNavigating) { |
| try { |
| mBatteryStats.noteStartGps(uid); |
| } catch (RemoteException e) { |
| Log.w(TAG, "RemoteException in addListener"); |
| } |
| } |
| } |
| |
| public void removeListener(int uid) { |
| 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); |
| } |
| |
| 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; |
| } |
| |
| public void startNavigating() { |
| if (!mStarted) { |
| if (Config.LOGV) Log.v(TAG, "startNavigating"); |
| mStarted = true; |
| if (!native_start(mPositionMode, false, mFixInterval)) { |
| mStarted = false; |
| Log.e(TAG, "native_start failed in startNavigating()"); |
| } |
| |
| // reset SV count to zero |
| updateStatus(LocationProvider.TEMPORARILY_UNAVAILABLE, 0); |
| } |
| } |
| |
| public void stopNavigating() { |
| if (Config.LOGV) Log.v(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); |
| } |
| } |
| |
| /** |
| * 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 (Config.LOGV) 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 (Config.LOGD) 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); |
| } catch (RemoteException e) { |
| Log.e(TAG, "RemoteException calling reportLocation"); |
| } |
| } |
| |
| if (mStarted && mStatus != LocationProvider.AVAILABLE) { |
| // send an intent to notify that the GPS is receiving fixes. |
| Intent intent = new Intent(GPS_FIX_CHANGE_ACTION); |
| intent.putExtra(EXTRA_ENABLED, true); |
| mContext.sendBroadcast(intent); |
| updateStatus(LocationProvider.AVAILABLE, mSvCount); |
| } |
| } |
| |
| /** |
| * called from native code to update our status |
| */ |
| private void reportStatus(int status) { |
| if (Config.LOGV) Log.v(TAG, "reportStatus status: " + status); |
| |
| boolean wasNavigating = mNavigating; |
| mNavigating = (status == GPS_STATUS_SESSION_BEGIN); |
| |
| if (wasNavigating != mNavigating) { |
| synchronized(mListeners) { |
| 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(GPS_ENABLED_CHANGE_ACTION); |
| intent.putExtra(EXTRA_ENABLED, mNavigating); |
| mContext.sendBroadcast(intent); |
| } |
| } |
| |
| /** |
| * 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 (Config.LOGD) { |
| if (Config.LOGV) 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++) { |
| if (Config.LOGV) 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) { |
| // send an intent to notify that the GPS is no longer receiving fixes. |
| Intent intent = new Intent(GPS_FIX_CHANGE_ACTION); |
| intent.putExtra(EXTRA_ENABLED, false); |
| mContext.sendBroadcast(intent); |
| updateStatus(LocationProvider.TEMPORARILY_UNAVAILABLE, mSvCount); |
| } |
| } |
| |
| /** |
| * called from native code to update SUPL status |
| */ |
| private void reportSuplStatus(int status) { |
| switch (status) { |
| case GPS_REQUEST_SUPL_DATA_CONN: |
| int result = mConnMgr.startUsingNetworkFeature( |
| ConnectivityManager.TYPE_MOBILE, Phone.FEATURE_ENABLE_SUPL); |
| if (result == Phone.APN_ALREADY_ACTIVE) { |
| native_supl_data_conn_open(mSuplApn); |
| mSuplDataConnectionState = SUPL_DATA_CONNECTION_OPEN; |
| } else if (result == Phone.APN_REQUEST_STARTED) { |
| mSuplDataConnectionState = SUPL_DATA_CONNECTION_OPENING; |
| } else { |
| native_supl_data_conn_failed(); |
| } |
| break; |
| case GPS_RELEASE_SUPL_DATA_CONN: |
| if (mSuplDataConnectionState != SUPL_DATA_CONNECTION_CLOSED) { |
| mConnMgr.stopUsingNetworkFeature( |
| ConnectivityManager.TYPE_MOBILE, Phone.FEATURE_ENABLE_SUPL); |
| native_supl_data_conn_closed(); |
| mSuplDataConnectionState = SUPL_DATA_CONNECTION_CLOSED; |
| } |
| break; |
| case GPS_SUPL_DATA_CONNECTED: |
| // Log.d(TAG, "GPS_SUPL_DATA_CONNECTED"); |
| break; |
| case GPS_SUPL_DATA_CONN_DONE: |
| // Log.d(TAG, "GPS_SUPL_DATA_CONN_DONE"); |
| break; |
| case GPS_SUPL_DATA_CONN_FAILED: |
| // Log.d(TAG, "GPS_SUPL_DATA_CONN_FAILED"); |
| break; |
| } |
| } |
| |
| private void xtraDownloadRequest() { |
| if (Config.LOGD) Log.d(TAG, "xtraDownloadRequest"); |
| if (mNetworkThread != null) { |
| mNetworkThread.xtraDownloadRequest(); |
| } |
| } |
| |
| private class GpsEventThread extends Thread { |
| |
| public GpsEventThread() { |
| super("GpsEventThread"); |
| } |
| |
| public void run() { |
| if (Config.LOGD) 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 (Config.LOGD) Log.d(TAG, "GpsEventThread exiting"); |
| } |
| } |
| |
| private class GpsNetworkThread extends Thread { |
| |
| private long mNextNtpTime = 0; |
| private long mNextXtraTime = 0; |
| private boolean mXtraDownloadRequested = false; |
| private boolean mDone = false; |
| |
| public GpsNetworkThread() { |
| super("GpsNetworkThread"); |
| } |
| |
| public void run() { |
| synchronized (mNetworkThreadLock) { |
| if (!mDone) { |
| runLocked(); |
| } |
| } |
| } |
| |
| public void runLocked() { |
| if (Config.LOGD) Log.d(TAG, "NetworkThread starting"); |
| |
| SntpClient client = new SntpClient(); |
| GpsXtraDownloader xtraDownloader = null; |
| |
| if (native_supports_xtra()) { |
| xtraDownloader = new GpsXtraDownloader(mContext, mProperties); |
| } |
| |
| // thread exits after disable() is called |
| while (!mDone) { |
| long waitTime = getWaitTime(); |
| do { |
| synchronized (this) { |
| try { |
| if (!mNetworkAvailable) { |
| if (Config.LOGD) Log.d(TAG, |
| "NetworkThread wait for network"); |
| wait(); |
| } else if (waitTime > 0) { |
| if (Config.LOGD) { |
| Log.d(TAG, "NetworkThread wait for " + |
| waitTime + "ms"); |
| } |
| wait(waitTime); |
| } |
| } catch (InterruptedException e) { |
| if (Config.LOGD) { |
| Log.d(TAG, "InterruptedException in GpsNetworkThread"); |
| } |
| } |
| } |
| waitTime = getWaitTime(); |
| } while (!mDone && ((!mXtraDownloadRequested && !mSetSuplServer && waitTime > 0) |
| || !mNetworkAvailable)); |
| if (Config.LOGD) Log.d(TAG, "NetworkThread out of wake loop"); |
| |
| if (!mDone) { |
| if (mNtpServer != null && |
| mNextNtpTime <= System.currentTimeMillis()) { |
| if (Config.LOGD) { |
| Log.d(TAG, "Requesting time from NTP server " + mNtpServer); |
| } |
| if (client.requestTime(mNtpServer, 10000)) { |
| long time = client.getNtpTime(); |
| long timeReference = client.getNtpTimeReference(); |
| int certainty = (int)(client.getRoundTripTime()/2); |
| |
| if (Config.LOGD) Log.d(TAG, "calling native_inject_time: " + |
| time + " reference: " + timeReference |
| + " certainty: " + certainty); |
| |
| native_inject_time(time, timeReference, certainty); |
| mNextNtpTime = System.currentTimeMillis() + NTP_INTERVAL; |
| } else { |
| if (Config.LOGD) Log.d(TAG, "requestTime failed"); |
| mNextNtpTime = System.currentTimeMillis() + RETRY_INTERVAL; |
| } |
| } |
| |
| // Set the SUPL server address if we have not yet |
| if (mSetSuplServer) { |
| try { |
| InetAddress inetAddress = InetAddress.getByName(mSuplHost); |
| if (inetAddress != null) { |
| byte[] addrBytes = inetAddress.getAddress(); |
| long addr = 0; |
| for (int i = 0; i < addrBytes.length; i++) { |
| int temp = addrBytes[i]; |
| // signed -> unsigned |
| if (temp < 0) temp = 256 + temp; |
| addr = addr * 256 + temp; |
| } |
| // use MS-Based position mode if SUPL support is enabled |
| mPositionMode = GPS_POSITION_MODE_MS_BASED; |
| native_set_supl_server((int)addr, mSuplPort); |
| mSetSuplServer = false; |
| } |
| } catch (UnknownHostException e) { |
| Log.e(TAG, "unknown host for SUPL server " + mSuplHost); |
| } |
| } |
| |
| if ((mXtraDownloadRequested || |
| (mNextXtraTime > 0 && mNextXtraTime <= System.currentTimeMillis())) |
| && xtraDownloader != null) { |
| byte[] data = xtraDownloader.downloadXtraData(); |
| if (data != null) { |
| if (Config.LOGD) { |
| Log.d(TAG, "calling native_inject_xtra_data"); |
| } |
| native_inject_xtra_data(data, data.length); |
| mNextXtraTime = 0; |
| mXtraDownloadRequested = false; |
| } else { |
| mNextXtraTime = System.currentTimeMillis() + RETRY_INTERVAL; |
| } |
| } |
| } |
| } |
| if (Config.LOGD) Log.d(TAG, "NetworkThread exiting"); |
| } |
| |
| synchronized void xtraDownloadRequest() { |
| mXtraDownloadRequested = true; |
| notify(); |
| } |
| |
| synchronized void signal() { |
| notify(); |
| } |
| |
| synchronized void setDone() { |
| if (Config.LOGD) Log.d(TAG, "stopping NetworkThread"); |
| mDone = true; |
| notify(); |
| } |
| |
| private long getWaitTime() { |
| long now = System.currentTimeMillis(); |
| long waitTime = Long.MAX_VALUE; |
| if (mNtpServer != null) { |
| waitTime = mNextNtpTime - now; |
| } |
| if (mNextXtraTime != 0) { |
| long xtraWaitTime = mNextXtraTime - now; |
| if (xtraWaitTime < waitTime) { |
| waitTime = xtraWaitTime; |
| } |
| } |
| if (waitTime < 0) { |
| waitTime = 0; |
| } |
| return waitTime; |
| } |
| } |
| |
| // 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; |
| |
| 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); |
| |
| // 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); |
| |
| // SUPL Support |
| private native void native_supl_data_conn_open(String apn); |
| private native void native_supl_data_conn_closed(); |
| private native void native_supl_data_conn_failed(); |
| private native void native_set_supl_server(int addr, int port); |
| } |
