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      1 /*
      2  * Copyright (C) 2013 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.deskclock.alarms;
     18 
     19 import android.annotation.TargetApi;
     20 import android.content.Context;
     21 import android.media.AudioAttributes;
     22 import android.os.Build;
     23 import android.os.Vibrator;
     24 
     25 import com.android.deskclock.AsyncRingtonePlayer;
     26 import com.android.deskclock.LogUtils;
     27 import com.android.deskclock.Utils;
     28 import com.android.deskclock.data.DataModel;
     29 import com.android.deskclock.provider.AlarmInstance;
     30 
     31 /**
     32  * Manages playing alarm ringtones and vibrating the device.
     33  */
     34 final class AlarmKlaxon {
     35 
     36     private static final long[] VIBRATE_PATTERN = {500, 500};
     37 
     38     private static boolean sStarted = false;
     39     private static AsyncRingtonePlayer sAsyncRingtonePlayer;
     40 
     41     private AlarmKlaxon() {}
     42 
     43     public static void stop(Context context) {
     44         if (sStarted) {
     45             LogUtils.v("AlarmKlaxon.stop()");
     46             sStarted = false;
     47             getAsyncRingtonePlayer(context).stop();
     48             ((Vibrator) context.getSystemService(Context.VIBRATOR_SERVICE)).cancel();
     49         }
     50     }
     51 
     52     public static void start(Context context, AlarmInstance instance) {
     53         // Make sure we are stopped before starting
     54         stop(context);
     55         LogUtils.v("AlarmKlaxon.start()");
     56 
     57         if (!AlarmInstance.NO_RINGTONE_URI.equals(instance.mRingtone)) {
     58             final long crescendoDuration = DataModel.getDataModel().getAlarmCrescendoDuration();
     59             getAsyncRingtonePlayer(context).play(instance.mRingtone, crescendoDuration);
     60         }
     61 
     62         if (instance.mVibrate) {
     63             final Vibrator vibrator = getVibrator(context);
     64             if (Utils.isLOrLater()) {
     65                 vibrateLOrLater(vibrator);
     66             } else {
     67                 vibrator.vibrate(VIBRATE_PATTERN, 0);
     68             }
     69         }
     70 
     71         sStarted = true;
     72     }
     73 
     74     @TargetApi(Build.VERSION_CODES.LOLLIPOP)
     75     private static void vibrateLOrLater(Vibrator vibrator) {
     76         vibrator.vibrate(VIBRATE_PATTERN, 0, new AudioAttributes.Builder()
     77                 .setUsage(AudioAttributes.USAGE_ALARM)
     78                 .setContentType(AudioAttributes.CONTENT_TYPE_SONIFICATION)
     79                 .build());
     80     }
     81 
     82     private static Vibrator getVibrator(Context context) {
     83         return ((Vibrator) context.getSystemService(Context.VIBRATOR_SERVICE));
     84     }
     85 
     86     private static synchronized AsyncRingtonePlayer getAsyncRingtonePlayer(Context context) {
     87         if (sAsyncRingtonePlayer == null) {
     88             sAsyncRingtonePlayer = new AsyncRingtonePlayer(context.getApplicationContext());
     89         }
     90 
     91         return sAsyncRingtonePlayer;
     92     }
     93 }