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GPS: Support for GPS HAL managing its own scheduling

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Also update to support new position mode API.

Change-Id: I00acc094d3e85bc5c0cd431af517064bfa8f2b1a
Signed-off-by: Mike Lockwood <lockwood@android.com>
This commit is contained in:
Mike Lockwood
2010-04-14 17:17:24 -04:00
parent f440b4aa7f
commit 04598b67a5
2 changed files with 100 additions and 33 deletions
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95
services/java/com/android/server/location/GpsLocationProvider.java
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@@ -81,6 +81,10 @@ public class GpsLocationProvider implements LocationProviderInterface {
private static final int GPS_POSITION_MODE_MS_BASED = 1;
private static final int GPS_POSITION_MODE_MS_ASSISTED = 2;
// these need to match GpsPositionRecurrence enum in gps.h
private static final int GPS_POSITION_RECURRENCE_PERIODIC = 0;
private static final int GPS_POSITION_RECURRENCE_SINGLE = 1;
// 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;
@@ -119,6 +123,13 @@ public class GpsLocationProvider implements LocationProviderInterface {
private static final int GPS_DELETE_CELLDB_INFO = 0x8000;
private static final int GPS_DELETE_ALL = 0xFFFF;
// The GPS_CAPABILITY_* flags must match the values in gps.h
private static final int GPS_CAPABILITY_SCHEDULING = 0x0000001;
private static final int GPS_CAPABILITY_MSB = 0x0000002;
private static final int GPS_CAPABILITY_MSA = 0x0000004;
private static final int GPS_CAPABILITY_SINGLE_SHOT = 0x0000008;
// 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;
@@ -150,13 +161,13 @@ public class GpsLocationProvider implements LocationProviderInterface {
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;
private static final long RECENT_FIX_TIMEOUT = 10 * 1000;
// 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;
private static final int NO_FIX_TIMEOUT = 60 * 1000;
// true if we are enabled
private volatile boolean mEnabled;
@@ -175,8 +186,8 @@ public class GpsLocationProvider implements LocationProviderInterface {
// true if GPS engine is on
private boolean mEngineOn;
// requested frequency of fixes, in seconds
private int mFixInterval = 1;
// requested frequency of fixes, in milliseconds
private int mFixInterval = 1000;
// number of fixes we have received since we started navigating
private int mFixCount;
@@ -184,6 +195,9 @@ public class GpsLocationProvider implements LocationProviderInterface {
// true if we started navigation
private boolean mStarted;
// capabilities of the GPS engine
private int mEngineCapabilities;
// for calculating time to first fix
private long mFixRequestTime = 0;
// time to first fix for most recent session
@@ -191,6 +205,8 @@ public class GpsLocationProvider implements LocationProviderInterface {
// time we received our last fix
private long mLastFixTime;
private int mPositionMode;
// properties loaded from PROPERTIES_FILE
private Properties mProperties;
private String mNtpServer;
@@ -717,8 +733,10 @@ public class GpsLocationProvider implements LocationProviderInterface {
mLastFixTime = 0;
startNavigating();
} else {
mAlarmManager.cancel(mWakeupIntent);
mAlarmManager.cancel(mTimeoutIntent);
if (!hasCapability(GPS_CAPABILITY_SCHEDULING)) {
mAlarmManager.cancel(mWakeupIntent);
mAlarmManager.cancel(mTimeoutIntent);
}
stopNavigating();
}
}
@@ -727,11 +745,14 @@ public class GpsLocationProvider implements LocationProviderInterface {
if (DEBUG) Log.d(TAG, "setMinTime " + minTime);
if (minTime >= 0) {
int interval = (int)(minTime/1000);
if (interval < 1) {
interval = 1;
mFixInterval = (int)minTime;
if (mStarted && hasCapability(GPS_CAPABILITY_SCHEDULING)) {
if (!native_set_position_mode(mPositionMode, GPS_POSITION_RECURRENCE_PERIODIC,
mFixInterval, 0, 0)) {
Log.e(TAG, "set_position_mode failed in setMinTime()");
}
}
mFixInterval = interval;
}
}
@@ -871,15 +892,22 @@ public class GpsLocationProvider implements LocationProviderInterface {
if (!mStarted) {
if (DEBUG) Log.d(TAG, "startNavigating");
mStarted = true;
int positionMode;
if (Settings.Secure.getInt(mContext.getContentResolver(),
if (hasCapability(GPS_CAPABILITY_MSB) &&
Settings.Secure.getInt(mContext.getContentResolver(),
Settings.Secure.ASSISTED_GPS_ENABLED, 1) != 0) {
positionMode = GPS_POSITION_MODE_MS_BASED;
mPositionMode = GPS_POSITION_MODE_MS_BASED;
} else {
positionMode = GPS_POSITION_MODE_STANDALONE;
mPositionMode = GPS_POSITION_MODE_STANDALONE;
}
if (!native_start(positionMode, false, 1)) {
int interval = (hasCapability(GPS_CAPABILITY_SCHEDULING) ? mFixInterval : 1000);
if (!native_set_position_mode(mPositionMode, GPS_POSITION_RECURRENCE_PERIODIC,
interval, 0, 0)) {
mStarted = false;
Log.e(TAG, "set_position_mode failed in startNavigating()");
return;
}
if (!native_start()) {
mStarted = false;
Log.e(TAG, "native_start failed in startNavigating()");
return;
@@ -889,11 +917,13 @@ public class GpsLocationProvider implements LocationProviderInterface {
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);
if (!hasCapability(GPS_CAPABILITY_SCHEDULING)) {
// 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, mTimeoutIntent);
}
}
}
}
@@ -920,7 +950,11 @@ public class GpsLocationProvider implements LocationProviderInterface {
mAlarmManager.cancel(mWakeupIntent);
long now = SystemClock.elapsedRealtime();
mAlarmManager.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
SystemClock.elapsedRealtime() + mFixInterval * 1000, mWakeupIntent);
SystemClock.elapsedRealtime() + mFixInterval, mWakeupIntent);
}
private boolean hasCapability(int capability) {
return ((mEngineCapabilities & capability) != 0);
}
/**
@@ -992,7 +1026,7 @@ public class GpsLocationProvider implements LocationProviderInterface {
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) {
if (!hasCapability(GPS_CAPABILITY_SCHEDULING) && mFixInterval < NO_FIX_TIMEOUT) {
mAlarmManager.cancel(mTimeoutIntent);
}
@@ -1003,7 +1037,8 @@ public class GpsLocationProvider implements LocationProviderInterface {
updateStatus(LocationProvider.AVAILABLE, mSvCount);
}
if (mFixCount++ >= MIN_FIX_COUNT && mFixInterval > 1) {
if (!hasCapability(GPS_CAPABILITY_SCHEDULING) &&
mFixCount++ >= MIN_FIX_COUNT && mFixInterval > 1000) {
if (DEBUG) Log.d(TAG, "exceeded MIN_FIX_COUNT");
hibernate();
}
@@ -1117,7 +1152,7 @@ public class GpsLocationProvider implements LocationProviderInterface {
updateStatus(mStatus, svCount);
if (mNavigating && mStatus == LocationProvider.AVAILABLE && mLastFixTime > 0 &&
System.currentTimeMillis() - mLastFixTime > RECENT_FIX_TIMEOUT * 1000) {
System.currentTimeMillis() - mLastFixTime > RECENT_FIX_TIMEOUT) {
// 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);
@@ -1194,6 +1229,13 @@ public class GpsLocationProvider implements LocationProviderInterface {
}
}
/**
* called from native code to inform us what the GPS engine capabilities are
*/
private void setEngineCapabilities(int capabilities) {
mEngineCapabilities = capabilities;
}
/**
* called from native code to request XTRA data
*/
@@ -1417,9 +1459,10 @@ public class GpsLocationProvider implements LocationProviderInterface {
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_set_position_mode(int mode, int recurrence, int min_interval,
int preferred_accuracy, int preferred_time);
private native boolean native_start();
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