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      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 
     17 package android.os;
     18 
     19 import android.content.Context;
     20 import android.media.AudioAttributes;
     21 import android.util.Log;
     22 
     23 /**
     24  * Vibrator implementation that controls the main system vibrator.
     25  *
     26  * @hide
     27  */
     28 public 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