1/*
2 * Copyright (C) 2016 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
17package com.android.server;
18
19import android.content.BroadcastReceiver;
20import android.content.Context;
21import android.content.Intent;
22import android.content.IntentFilter;
23import android.hardware.Sensor;
24import android.hardware.SensorEvent;
25import android.hardware.SensorEventListener;
26import android.hardware.SensorManager;
27import android.os.SystemClock;
28import android.os.SystemProperties;
29import android.os.UserHandle;
30import android.provider.Settings;
31import android.util.Slog;
32
33public class SensorNotificationService extends SystemService implements SensorEventListener {
34    //TODO: set DBG to false or remove Slog before release
35    private static final boolean DBG = true;
36    private static final String TAG = "SensorNotificationService";
37    private Context mContext;
38
39    private SensorManager mSensorManager;
40    private Sensor mMetaSensor;
41
42    public SensorNotificationService(Context context) {
43        super(context);
44        mContext = context;
45    }
46
47    public void onStart() {
48        LocalServices.addService(SensorNotificationService.class, this);
49    }
50
51    public void onBootPhase(int phase) {
52        if (phase == PHASE_THIRD_PARTY_APPS_CAN_START) {
53            // start
54            mSensorManager = (SensorManager) mContext.getSystemService(Context.SENSOR_SERVICE);
55            mMetaSensor = mSensorManager.getDefaultSensor(Sensor.TYPE_DYNAMIC_SENSOR_META);
56            if (mMetaSensor == null) {
57                if (DBG) Slog.d(TAG, "Cannot obtain dynamic meta sensor, not supported.");
58            } else {
59                mSensorManager.registerListener(this, mMetaSensor,
60                        SensorManager.SENSOR_DELAY_FASTEST);
61            }
62        }
63    }
64
65    private void broadcastDynamicSensorChanged() {
66        Intent i = new Intent(Intent.ACTION_DYNAMIC_SENSOR_CHANGED);
67        i.setFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY); // avoid waking up manifest receivers
68        mContext.sendBroadcastAsUser(i, UserHandle.ALL);
69        if (DBG) Slog.d(TAG, "DYNS sent dynamic sensor broadcast");
70    }
71
72    @Override
73    public void onSensorChanged(SensorEvent event) {
74        if (event.sensor == mMetaSensor) {
75            broadcastDynamicSensorChanged();
76        }
77    }
78
79    @Override
80    public void onAccuracyChanged(Sensor sensor, int accuracy) {
81
82    }
83}
84
85