1/*
2 * Copyright (C) 2012 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 android.os;
18
19import android.content.Context;
20import android.media.AudioAttributes;
21import android.util.Log;
22
23/**
24 * Vibrator implementation that controls the main system vibrator.
25 *
26 * @hide
27 */
28public class SystemVibrator extends Vibrator {
29    private static final String TAG = "Vibrator";
30
31    private final IVibratorService mService;
32    private final Binder mToken = new Binder();
33
34    public SystemVibrator() {
35        mService = IVibratorService.Stub.asInterface(
36                ServiceManager.getService("vibrator"));
37    }
38
39    public SystemVibrator(Context context) {
40        super(context);
41        mService = IVibratorService.Stub.asInterface(
42                ServiceManager.getService("vibrator"));
43    }
44
45    @Override
46    public boolean hasVibrator() {
47        if (mService == null) {
48            Log.w(TAG, "Failed to vibrate; no vibrator service.");
49            return false;
50        }
51        try {
52            return mService.hasVibrator();
53        } catch (RemoteException e) {
54        }
55        return false;
56    }
57
58    /**
59     * @hide
60     */
61    @Override
62    public void vibrate(int uid, String opPkg, long milliseconds, AudioAttributes attributes) {
63        if (mService == null) {
64            Log.w(TAG, "Failed to vibrate; no vibrator service.");
65            return;
66        }
67        try {
68            mService.vibrate(uid, opPkg, milliseconds, usageForAttributes(attributes), mToken);
69        } catch (RemoteException e) {
70            Log.w(TAG, "Failed to vibrate.", e);
71        }
72    }
73
74    /**
75     * @hide
76     */
77    @Override
78    public void vibrate(int uid, String opPkg, long[] pattern, int repeat,
79            AudioAttributes attributes) {
80        if (mService == null) {
81            Log.w(TAG, "Failed to vibrate; no vibrator service.");
82            return;
83        }
84        // catch this here because the server will do nothing.  pattern may
85        // not be null, let that be checked, because the server will drop it
86        // anyway
87        if (repeat < pattern.length) {
88            try {
89                mService.vibratePattern(uid, opPkg, pattern, repeat, usageForAttributes(attributes),
90                        mToken);
91            } catch (RemoteException e) {
92                Log.w(TAG, "Failed to vibrate.", e);
93            }
94        } else {
95            throw new ArrayIndexOutOfBoundsException();
96        }
97    }
98
99    private static int usageForAttributes(AudioAttributes attributes) {
100        return attributes != null ? attributes.getUsage() : AudioAttributes.USAGE_UNKNOWN;
101    }
102
103    @Override
104    public void cancel() {
105        if (mService == null) {
106            return;
107        }
108        try {
109            mService.cancelVibrate(mToken);
110        } catch (RemoteException e) {
111            Log.w(TAG, "Failed to cancel vibration.", e);
112        }
113    }
114}
115