| /* |
| * Copyright (C) 2014 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.content.Context; |
| import android.location.GnssMeasurementsEvent; |
| import android.location.IGnssMeasurementsListener; |
| import android.os.Handler; |
| import android.os.RemoteException; |
| import android.provider.Settings; |
| import android.util.Log; |
| |
| import com.android.internal.annotations.VisibleForTesting; |
| |
| /** |
| * An base implementation for GPS measurements provider. |
| * It abstracts out the responsibility of handling listeners, while still allowing technology |
| * specific implementations to be built. |
| * |
| * @hide |
| */ |
| public abstract class GnssMeasurementsProvider extends |
| RemoteListenerHelper<IGnssMeasurementsListener> { |
| private static final String TAG = "GnssMeasurementsProvider"; |
| private static final boolean DEBUG = Log.isLoggable(TAG, Log.DEBUG); |
| |
| private final Context mContext; |
| private final GnssMeasurementProviderNative mNative; |
| |
| private boolean mIsCollectionStarted; |
| private boolean mEnableFullTracking; |
| |
| protected GnssMeasurementsProvider(Context context, Handler handler) { |
| this(context, handler, new GnssMeasurementProviderNative()); |
| } |
| |
| @VisibleForTesting |
| GnssMeasurementsProvider(Context context, Handler handler, |
| GnssMeasurementProviderNative aNative) { |
| super(handler, TAG); |
| mContext = context; |
| mNative = aNative; |
| } |
| |
| // TODO(b/37460011): Use this with death recovery logic. |
| void resumeIfStarted() { |
| if (DEBUG) { |
| Log.d(TAG, "resumeIfStarted"); |
| } |
| if (mIsCollectionStarted) { |
| mNative.startMeasurementCollection(mEnableFullTracking); |
| } |
| } |
| |
| @Override |
| public boolean isAvailableInPlatform() { |
| return mNative.isMeasurementSupported(); |
| } |
| |
| @Override |
| protected int registerWithService() { |
| int devOptions = Settings.Secure.getInt(mContext.getContentResolver(), |
| Settings.Global.DEVELOPMENT_SETTINGS_ENABLED, 0); |
| int fullTrackingToggled = Settings.Global.getInt(mContext.getContentResolver(), |
| Settings.Global.ENABLE_GNSS_RAW_MEAS_FULL_TRACKING, 0); |
| boolean enableFullTracking = (devOptions == 1 /* Developer Mode enabled */) |
| && (fullTrackingToggled == 1 /* Raw Measurements Full Tracking enabled */); |
| boolean result = mNative.startMeasurementCollection(enableFullTracking); |
| if (result) { |
| mIsCollectionStarted = true; |
| mEnableFullTracking = enableFullTracking; |
| return RemoteListenerHelper.RESULT_SUCCESS; |
| } else { |
| return RemoteListenerHelper.RESULT_INTERNAL_ERROR; |
| } |
| } |
| |
| @Override |
| protected void unregisterFromService() { |
| boolean stopped = mNative.stopMeasurementCollection(); |
| if (stopped) { |
| mIsCollectionStarted = false; |
| } |
| } |
| |
| public void onMeasurementsAvailable(final GnssMeasurementsEvent event) { |
| ListenerOperation<IGnssMeasurementsListener> operation = |
| listener -> listener.onGnssMeasurementsReceived(event); |
| foreach(operation); |
| } |
| |
| public void onCapabilitiesUpdated(boolean isGnssMeasurementsSupported) { |
| setSupported(isGnssMeasurementsSupported); |
| updateResult(); |
| } |
| |
| public void onGpsEnabledChanged() { |
| tryUpdateRegistrationWithService(); |
| updateResult(); |
| } |
| |
| @Override |
| protected ListenerOperation<IGnssMeasurementsListener> getHandlerOperation(int result) { |
| int status; |
| switch (result) { |
| case RESULT_SUCCESS: |
| status = GnssMeasurementsEvent.Callback.STATUS_READY; |
| break; |
| case RESULT_NOT_AVAILABLE: |
| case RESULT_NOT_SUPPORTED: |
| case RESULT_INTERNAL_ERROR: |
| status = GnssMeasurementsEvent.Callback.STATUS_NOT_SUPPORTED; |
| break; |
| case RESULT_NOT_ALLOWED: |
| status = GnssMeasurementsEvent.Callback.STATUS_NOT_ALLOWED; |
| break; |
| case RESULT_GPS_LOCATION_DISABLED: |
| status = GnssMeasurementsEvent.Callback.STATUS_LOCATION_DISABLED; |
| break; |
| case RESULT_UNKNOWN: |
| return null; |
| default: |
| Log.v(TAG, "Unhandled addListener result: " + result); |
| return null; |
| } |
| return new StatusChangedOperation(status); |
| } |
| |
| private static class StatusChangedOperation |
| implements ListenerOperation<IGnssMeasurementsListener> { |
| private final int mStatus; |
| |
| public StatusChangedOperation(int status) { |
| mStatus = status; |
| } |
| |
| @Override |
| public void execute(IGnssMeasurementsListener listener) throws RemoteException { |
| listener.onStatusChanged(mStatus); |
| } |
| } |
| |
| @VisibleForTesting |
| static class GnssMeasurementProviderNative { |
| public boolean isMeasurementSupported() { |
| return native_is_measurement_supported(); |
| } |
| |
| public boolean startMeasurementCollection(boolean enableFullTracking) { |
| return native_start_measurement_collection(enableFullTracking); |
| } |
| |
| public boolean stopMeasurementCollection() { |
| return native_stop_measurement_collection(); |
| } |
| } |
| |
| private static native boolean native_is_measurement_supported(); |
| |
| private static native boolean native_start_measurement_collection(boolean enableFullTracking); |
| |
| private static native boolean native_stop_measurement_collection(); |
| } |