Add GnssAssistanceProviderBase (f5e016e5) · Commits · e / os / android_frameworks_base

core/res/res/values/config.xml

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		@@ -2161,6 +2161,17 @@
		config_enableGeofenceOverlay is false. -->
		<string name="config_geofenceProviderPackageName" translatable="false">@null</string>

		<!-- Whether to enable GNSS assistance overlay which allows GnssAssistanceProvider to be
		replaced by an app at run-time. When disabled, only the
		config_gnssAssistanceProviderPackageName package will be searched for
		GnssAssistanceProvider, otherwise any system package is eligible. Anyone who wants to
		disable the overlay mechanism can set it to false.
		-->
		<bool name="config_enableGnssAssistanceOverlay" translatable="false">true</bool>
		<!-- Package name providing GNSS assistance API support. Used only when
		config_enableGnssAssistanceOverlay is false. -->
		<string name="config_gnssAssistanceProviderPackageName" translatable="false">@null</string>

		<!-- Whether to enable Hardware Activity-Recognition overlay which allows Hardware
		Activity-Recognition to be replaced by an app at run-time. When disabled, only the
		config_activityRecognitionHardwarePackageName package will be searched for

core/res/res/values/symbols.xml

+2 −0

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		@@ -2040,6 +2040,7 @@
		<java-symbol type="bool" name="config_useGnssHardwareProvider" />
		<java-symbol type="bool" name="config_enableGeocoderOverlay" />
		<java-symbol type="bool" name="config_enableGeofenceOverlay" />
		<java-symbol type="bool" name="config_enableGnssAssistanceOverlay" />
		<java-symbol type="bool" name="config_enableNetworkLocationOverlay" />
		<java-symbol type="bool" name="config_sf_limitedAlpha" />
		<java-symbol type="bool" name="config_unplugTurnsOnScreen" />
		@@ -2222,6 +2223,7 @@
		<java-symbol type="string" name="config_gnssLocationProviderPackageName" />
		<java-symbol type="string" name="config_geocoderProviderPackageName" />
		<java-symbol type="string" name="config_geofenceProviderPackageName" />
		<java-symbol type="string" name="config_gnssAssistanceProviderPackageName" />
		<java-symbol type="string" name="config_networkLocationProviderPackageName" />
		<java-symbol type="string" name="config_wimaxManagerClassname" />
		<java-symbol type="string" name="config_wimaxNativeLibLocation" />

location/api/system-current.txt

+7 −0

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		@@ -1435,6 +1435,13 @@ package android.location.provider {
		field public static final String ACTION_GEOCODE_PROVIDER = "com.android.location.service.GeocodeProvider";
		}

		@FlaggedApi("android.location.flags.gnss_assistance_interface") public abstract class GnssAssistanceProviderBase {
		ctor public GnssAssistanceProviderBase(@NonNull android.content.Context, @NonNull String);
		method @NonNull public final android.os.IBinder getBinder();
		method public abstract void onRequest(@NonNull android.os.OutcomeReceiver<android.location.GnssAssistance,java.lang.Throwable>);
		field public static final String ACTION_GNSS_ASSISTANCE_PROVIDER = "android.location.provider.action.GNSS_ASSISTANCE_PROVIDER";
		}

		public abstract class LocationProviderBase {
		ctor public LocationProviderBase(@NonNull android.content.Context, @NonNull String, @NonNull android.location.provider.ProviderProperties);
		method @Nullable public final android.os.IBinder getBinder();

location/java/android/location/provider/GnssAssistanceProviderBase.java

0 → 100644

+152 −0

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		/*
		* Copyright (C) 2024 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 android.location.provider;

		import android.annotation.FlaggedApi;
		import android.annotation.NonNull;
		import android.annotation.Nullable;
		import android.annotation.SystemApi;
		import android.content.Context;
		import android.content.Intent;
		import android.location.GnssAssistance;
		import android.location.flags.Flags;
		import android.os.Handler;
		import android.os.IBinder;
		import android.os.Looper;
		import android.os.OutcomeReceiver;
		import android.os.RemoteException;
		import android.util.Log;

		import java.util.Objects;
		import java.util.concurrent.atomic.AtomicReference;


		/**
		* Base class for GNSS assistance providers outside the system server.
		*
		* <p>GNSS assistance providers should be wrapped in a non-exported service which returns the result
		* of {@link #getBinder()} from the service's {@link android.app.Service#onBind(Intent)} method. The
		* service should not be exported so that components other than the system server cannot bind to it.
		* Alternatively, the service may be guarded by a permission that only system server can obtain. The
		* service may specify metadata on its capabilities:
		*
		* <ul>
		* <li>"serviceVersion": An integer version code to help tie break if multiple services are
		* capable of implementing the geocode provider. All else equal, the service with the highest
		* version code will be chosen. Assumed to be 0 if not specified.
		* <li>"serviceIsMultiuser": A boolean property, indicating if the service wishes to take
		* responsibility for handling changes to the current user on the device. If true, the service
		* will always be bound from the system user. If false, the service will always be bound from
		* the current user. If the current user changes, the old binding will be released, and a new
		* binding established under the new user. Assumed to be false if not specified.
		* </ul>
		*
		* <p>The service should have an intent filter in place for the GNSS assistance provider as
		* specified by the constant in this class.
		*
		* <p>GNSS assistance providers are identified by their UID / package name / attribution tag. Based
		* on this identity, geocode providers may be given some special privileges.
		*
		* @hide
		*/
		@FlaggedApi(Flags.FLAG_GNSS_ASSISTANCE_INTERFACE)
		@SystemApi
		public abstract class GnssAssistanceProviderBase {

		/**
		* The action the wrapping service should have in its intent filter to implement the GNSS
		* Assistance provider.
		*/
		public static final String ACTION_GNSS_ASSISTANCE_PROVIDER =
		"android.location.provider.action.GNSS_ASSISTANCE_PROVIDER";

		final String mTag;
		@Nullable
		final String mAttributionTag;
		final IBinder mBinder;

		/**
		* Subclasses should pass in a context and an arbitrary tag that may be used for logcat logging
		* of errors, and thus should uniquely identify the class.
		*/
		public GnssAssistanceProviderBase(@NonNull Context context, @NonNull String tag) {
		mTag = tag;
		mAttributionTag = context.getAttributionTag();
		mBinder = new GnssAssistanceProviderBase.Service();
		}

		/**
		* Returns the IBinder instance that should be returned from the {@link
		* android.app.Service#onBind(Intent)} method of the wrapping service.
		*/
		@NonNull
		public final IBinder getBinder() {
		return mBinder;
		}

		/**
		* Requests GNSS assistance data of the given arguments. The given callback must be invoked
		* once.
		*/
		public abstract void onRequest(
		@NonNull OutcomeReceiver<GnssAssistance, Throwable> callback);

		private class Service extends IGnssAssistanceProvider.Stub {
		@Override
		public void request(IGnssAssistanceCallback callback) {
		try {
		onRequest(new GnssAssistanceProviderBase.SingleUseCallback(callback));
		} catch (RuntimeException e) {
		// exceptions on one-way binder threads are dropped - move to a different thread
		Log.w(mTag, e);
		new Handler(Looper.getMainLooper())
		.post(
		() -> {
		throw new AssertionError(e);
		});
		}
		}
		}

		private static class SingleUseCallback implements
		OutcomeReceiver<GnssAssistance, Throwable> {

		private final AtomicReference<IGnssAssistanceCallback> mCallback;

		SingleUseCallback(IGnssAssistanceCallback callback) {
		mCallback = new AtomicReference<>(callback);
		}

		@Override
		public void onError(Throwable e) {
		try {
		Objects.requireNonNull(mCallback.getAndSet(null)).onError();
		} catch (RemoteException r) {
		throw r.rethrowFromSystemServer();
		}
		}

		@Override
		public void onResult(GnssAssistance result) {
		try {
		Objects.requireNonNull(mCallback.getAndSet(null)).onResult(result);
		} catch (RemoteException e) {
		throw e.rethrowFromSystemServer();
		}
		}
		}
		}

location/java/android/location/provider/IGnssAssistanceCallback.aidl

0 → 100644

+28 −0

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		/*
		* Copyright (C) 2024 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 android.location.provider;

		import android.location.GnssAssistance;

		/**
		* Binder interface for GNSS assistance callbacks.
		* @hide
		*/
		oneway interface IGnssAssistanceCallback {
		void onError();
		void onResult(in GnssAssistance result);
		}