High speed GPS/GNSS Navigation Information Block am: 5d5bac8383
am: 0021090eb9
Change-Id: I77d910e9cfd33d5b4aeabfa0f2c2db7fa73120b4
diff --git a/services/core/java/com/android/server/location/GnssLocationProvider.java b/services/core/java/com/android/server/location/GnssLocationProvider.java
index 9ae496f..45f54a9 100644
--- a/services/core/java/com/android/server/location/GnssLocationProvider.java
+++ b/services/core/java/com/android/server/location/GnssLocationProvider.java
@@ -415,6 +415,12 @@
private int mYearOfHardware = 0;
+ // Set lower than the current ITAR limit of 600m/s to allow this to trigger even if GPS HAL
+ // stops output right at 600m/s, depriving this of the information of a device that reaches
+ // greater than 600m/s, and higher than the speed of sound to avoid impacting most use cases.
+ private static final float ITAR_SPEED_LIMIT_METERS_PER_SECOND = 400.0F;
+ private boolean mItarSpeedLimitExceeded = false;
+
private final IGnssStatusProvider mGnssStatusProvider = new IGnssStatusProvider.Stub() {
@Override
public void registerGnssStatusCallback(IGnssStatusListener callback) {
@@ -1400,6 +1406,12 @@
mStarted = true;
mSingleShot = singleShot;
mPositionMode = GPS_POSITION_MODE_STANDALONE;
+ // Notify about suppressed output, if speed limit was previously exceeded.
+ // Elsewhere, we check again with every speed output reported.
+ if (mItarSpeedLimitExceeded) {
+ Log.i(TAG, "startNavigating with ITAR limit in place. Output limited " +
+ "until slow enough speed reported.");
+ }
boolean agpsEnabled =
(Settings.Global.getInt(mContext.getContentResolver(),
@@ -1486,7 +1498,17 @@
* 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) {
+ float speedMetersPerSecond, float bearing, float accuracy, long timestamp) {
+ if ((flags & LOCATION_HAS_SPEED) == LOCATION_HAS_SPEED) {
+ mItarSpeedLimitExceeded = speedMetersPerSecond > ITAR_SPEED_LIMIT_METERS_PER_SECOND;
+ }
+
+ if (mItarSpeedLimitExceeded) {
+ Log.i(TAG, "Hal reported a speed in excess of ITAR limit." +
+ " GPS/GNSS Navigation output blocked.");
+ return; // No output of location allowed
+ }
+
if (VERBOSE) Log.v(TAG, "reportLocation lat: " + latitude + " long: " + longitude +
" timestamp: " + timestamp);
@@ -1506,7 +1528,7 @@
mLocation.removeAltitude();
}
if ((flags & LOCATION_HAS_SPEED) == LOCATION_HAS_SPEED) {
- mLocation.setSpeed(speed);
+ mLocation.setSpeed(speedMetersPerSecond);
} else {
mLocation.removeSpeed();
}
@@ -1690,23 +1712,29 @@
* called from native code to report NMEA data received
*/
private void reportNmea(long timestamp) {
- int length = native_read_nmea(mNmeaBuffer, mNmeaBuffer.length);
- String nmea = new String(mNmeaBuffer, 0 /* offset */, length);
- mListenerHelper.onNmeaReceived(timestamp, nmea);
+ if (!mItarSpeedLimitExceeded) {
+ int length = native_read_nmea(mNmeaBuffer, mNmeaBuffer.length);
+ String nmea = new String(mNmeaBuffer, 0 /* offset */, length);
+ mListenerHelper.onNmeaReceived(timestamp, nmea);
+ }
}
/**
* called from native code - Gps measurements callback
*/
private void reportMeasurementData(GnssMeasurementsEvent event) {
- mGnssMeasurementsProvider.onMeasurementsAvailable(event);
+ if (!mItarSpeedLimitExceeded) {
+ mGnssMeasurementsProvider.onMeasurementsAvailable(event);
+ }
}
/**
* called from native code - GPS navigation message callback
*/
private void reportNavigationMessage(GnssNavigationMessage event) {
- mGnssNavigationMessageProvider.onNavigationMessageAvailable(event);
+ if (!mItarSpeedLimitExceeded) {
+ mGnssNavigationMessageProvider.onNavigationMessageAvailable(event);
+ }
}
/**