Soonil Nagarkar | 6d21a4d | 2020-01-22 16:21:00 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2014 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package com.android.server.location; |
| 18 | |
| 19 | import android.annotation.Nullable; |
| 20 | import android.content.Context; |
| 21 | import android.hardware.location.ActivityRecognitionHardware; |
| 22 | import android.hardware.location.IActivityRecognitionHardwareClient; |
| 23 | import android.hardware.location.IActivityRecognitionHardwareWatcher; |
| 24 | import android.os.IBinder; |
| 25 | import android.os.RemoteException; |
| 26 | import android.util.Log; |
| 27 | |
| 28 | import com.android.server.FgThread; |
| 29 | import com.android.server.ServiceWatcher; |
| 30 | |
| 31 | /** |
| 32 | * Proxy class to bind GmsCore to the ActivityRecognitionHardware. |
| 33 | * |
| 34 | * @hide |
| 35 | */ |
| 36 | public class HardwareActivityRecognitionProxy { |
| 37 | |
| 38 | private static final String TAG = "ARProxy"; |
| 39 | private static final String SERVICE_ACTION = |
| 40 | "com.android.location.service.ActivityRecognitionProvider"; |
| 41 | |
| 42 | /** |
| 43 | * Creates and registers this proxy. If no suitable service is available for the proxy, returns |
| 44 | * null. |
| 45 | */ |
| 46 | @Nullable |
| 47 | public static HardwareActivityRecognitionProxy createAndRegister(Context context) { |
| 48 | HardwareActivityRecognitionProxy arProxy = new HardwareActivityRecognitionProxy(context); |
| 49 | if (arProxy.register()) { |
| 50 | return arProxy; |
| 51 | } else { |
| 52 | return null; |
| 53 | } |
| 54 | } |
| 55 | |
| 56 | private final boolean mIsSupported; |
| 57 | private final ActivityRecognitionHardware mInstance; |
| 58 | |
| 59 | private final ServiceWatcher mServiceWatcher; |
| 60 | |
| 61 | private HardwareActivityRecognitionProxy(Context context) { |
| 62 | mIsSupported = ActivityRecognitionHardware.isSupported(); |
| 63 | if (mIsSupported) { |
| 64 | mInstance = ActivityRecognitionHardware.getInstance(context); |
| 65 | } else { |
| 66 | mInstance = null; |
| 67 | } |
| 68 | |
| 69 | mServiceWatcher = new ServiceWatcher(context, |
| 70 | FgThread.getHandler(), |
| 71 | SERVICE_ACTION, |
| 72 | this::onBind, |
| 73 | null, |
| 74 | com.android.internal.R.bool.config_enableActivityRecognitionHardwareOverlay, |
| 75 | com.android.internal.R.string.config_activityRecognitionHardwarePackageName); |
| 76 | } |
| 77 | |
| 78 | private boolean register() { |
| 79 | return mServiceWatcher.register(); |
| 80 | } |
| 81 | |
| 82 | private void onBind(IBinder binder) throws RemoteException { |
| 83 | String descriptor = binder.getInterfaceDescriptor(); |
| 84 | |
| 85 | if (IActivityRecognitionHardwareWatcher.class.getCanonicalName().equals(descriptor)) { |
| 86 | IActivityRecognitionHardwareWatcher watcher = |
| 87 | IActivityRecognitionHardwareWatcher.Stub.asInterface(binder); |
| 88 | if (mInstance != null) { |
| 89 | watcher.onInstanceChanged(mInstance); |
| 90 | } |
| 91 | } else if (IActivityRecognitionHardwareClient.class.getCanonicalName().equals(descriptor)) { |
| 92 | IActivityRecognitionHardwareClient client = |
| 93 | IActivityRecognitionHardwareClient.Stub.asInterface(binder); |
| 94 | client.onAvailabilityChanged(mIsSupported, mInstance); |
| 95 | } else { |
| 96 | Log.e(TAG, "Unknown descriptor: " + descriptor); |
| 97 | } |
| 98 | } |
| 99 | } |