| /* |
| * Copyright (C) 2020 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.gnss; |
| |
| import android.content.Context; |
| import android.location.GnssAntennaInfo; |
| import android.location.IGnssAntennaInfoListener; |
| import android.os.Handler; |
| import android.util.Log; |
| |
| import com.android.internal.annotations.VisibleForTesting; |
| import com.android.server.location.CallerIdentity; |
| import com.android.server.location.RemoteListenerHelper; |
| |
| import java.util.List; |
| |
| /** |
| * An base implementation for GNSS antenna info provider. It abstracts out the responsibility of |
| * handling listeners, while still allowing technology specific implementations to be built. |
| * |
| * @hide |
| */ |
| public abstract class GnssAntennaInfoProvider |
| extends RemoteListenerHelper<Void, IGnssAntennaInfoListener> { |
| private static final String TAG = "GnssAntennaInfoProvider"; |
| private static final boolean DEBUG = Log.isLoggable(TAG, Log.DEBUG); |
| |
| private final GnssAntennaInfoProviderNative mNative; |
| |
| private boolean mIsListeningStarted; |
| |
| protected GnssAntennaInfoProvider(Context context, Handler handler) { |
| this(context, handler, new GnssAntennaInfoProviderNative()); |
| } |
| |
| @VisibleForTesting |
| public GnssAntennaInfoProvider( |
| Context context, Handler handler, GnssAntennaInfoProviderNative aNative) { |
| super(context, handler, TAG); |
| mNative = aNative; |
| } |
| |
| void resumeIfStarted() { |
| if (DEBUG) { |
| Log.d(TAG, "resumeIfStarted"); |
| } |
| if (mIsListeningStarted) { |
| mNative.startAntennaInfoListening(); |
| } |
| } |
| |
| |
| @Override |
| public boolean isAvailableInPlatform() { |
| return mNative.isAntennaInfoSupported(); |
| } |
| |
| @Override |
| protected int registerWithService() { |
| boolean started = mNative.startAntennaInfoListening(); |
| if (started) { |
| mIsListeningStarted = true; |
| return RemoteListenerHelper.RESULT_SUCCESS; |
| } |
| return RemoteListenerHelper.RESULT_INTERNAL_ERROR; |
| } |
| |
| @Override |
| protected void unregisterFromService() { |
| boolean stopped = mNative.stopAntennaInfoListening(); |
| if (stopped) { |
| mIsListeningStarted = false; |
| } |
| } |
| |
| /** Handle GNSS capabilities update from the GNSS HAL implementation. */ |
| public void onCapabilitiesUpdated(boolean isAntennaInfoSupported) { |
| setSupported(isAntennaInfoSupported); |
| updateResult(); |
| } |
| |
| /** Handle GNSS enabled changes.*/ |
| public void onGpsEnabledChanged() { |
| tryUpdateRegistrationWithService(); |
| updateResult(); |
| } |
| |
| @Override |
| protected ListenerOperation<IGnssAntennaInfoListener> getHandlerOperation(int result) { |
| return (IGnssAntennaInfoListener listener, |
| CallerIdentity callerIdentity) -> { |
| // Do nothing, as GnssAntennaInfo.Callback does not have an onStatusChanged method. |
| }; |
| } |
| |
| /** Handle Gnss Antenna Info report. */ |
| public void onGnssAntennaInfoAvailable(final List<GnssAntennaInfo> gnssAntennaInfos) { |
| foreach((IGnssAntennaInfoListener listener, CallerIdentity callerIdentity) -> { |
| if (!hasPermission(mContext, callerIdentity)) { |
| logPermissionDisabledEventNotReported( |
| TAG, callerIdentity.packageName, "GNSS antenna info"); |
| return; |
| } |
| listener.onGnssAntennaInfoReceived(gnssAntennaInfos); |
| }); |
| } |
| |
| /** |
| * Wrapper class for native methods. This is mocked for testing. |
| */ |
| @VisibleForTesting |
| public static class GnssAntennaInfoProviderNative { |
| |
| public boolean isAntennaInfoSupported() { |
| return native_is_antenna_info_supported(); |
| } |
| |
| /** Start antenna info listening. */ |
| public boolean startAntennaInfoListening() { |
| return native_start_antenna_info_listening(); |
| } |
| |
| /** Stop antenna info listening. */ |
| public boolean stopAntennaInfoListening() { |
| return native_stop_antenna_info_listening(); |
| } |
| } |
| |
| private static native boolean native_is_antenna_info_supported(); |
| |
| private static native boolean native_start_antenna_info_listening(); |
| |
| private static native boolean native_stop_antenna_info_listening(); |
| } |