Bill Lin | 32ed3d6 | 2018-10-02 18:10:09 +0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2018 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.systemui.power; |
| 18 | |
| 19 | import static android.content.Context.VIBRATOR_SERVICE; |
| 20 | |
| 21 | import static com.android.internal.util.function.pooled.PooledLambda.obtainMessage; |
| 22 | |
| 23 | import android.content.ContentResolver; |
| 24 | import android.content.Context; |
| 25 | import android.media.AudioAttributes; |
| 26 | import android.net.Uri; |
| 27 | import android.os.Handler; |
| 28 | import android.os.VibrationEffect; |
| 29 | import android.os.Vibrator; |
| 30 | |
| 31 | import com.android.internal.annotations.VisibleForTesting; |
| 32 | import com.android.systemui.R; |
| 33 | import com.android.systemui.media.NotificationPlayer; |
| 34 | |
| 35 | /** |
| 36 | * A Controller handle beep sound, vibration and TTS depend on state of OverheatAlarmDialog. |
| 37 | */ |
| 38 | public class OverheatAlarmController { |
| 39 | private static final String TAG = OverheatAlarmController.class.getSimpleName(); |
| 40 | |
| 41 | private static final int VIBRATION_INTERVAL = 2000; |
| 42 | private static final long[] VIBRATION_PATTERN = new long[]{0, 400, 200, 400, 200, 400, 200}; |
| 43 | |
| 44 | private static OverheatAlarmController sInstance; |
| 45 | |
| 46 | private final Vibrator mVibrator; |
| 47 | |
| 48 | private NotificationPlayer mPlayer; |
| 49 | private VibrationEffect mVibrationEffect; |
| 50 | |
| 51 | private boolean mShouldVibrate; |
| 52 | |
| 53 | /** |
| 54 | * The constructor only used to create singleton sInstance. |
| 55 | */ |
| 56 | private OverheatAlarmController(Context context) { |
| 57 | mVibrator = (Vibrator) context.getSystemService(VIBRATOR_SERVICE); |
| 58 | } |
| 59 | |
| 60 | /** |
| 61 | * Get singleton OverheatAlarmController instance. |
| 62 | */ |
| 63 | public static OverheatAlarmController getInstance(Context context) { |
| 64 | if (context == null) { |
| 65 | throw new IllegalArgumentException(); |
| 66 | } |
| 67 | if (sInstance == null) { |
| 68 | sInstance = new OverheatAlarmController(context); |
| 69 | } |
| 70 | return sInstance; |
| 71 | } |
| 72 | |
| 73 | /** |
| 74 | * Starting alarm beep sound and vibration. |
| 75 | */ |
| 76 | @VisibleForTesting |
| 77 | public void startAlarm(Context context) { |
| 78 | if (mPlayer != null) { |
| 79 | return; |
| 80 | } |
| 81 | playSound(context); |
| 82 | startVibrate(); |
| 83 | } |
| 84 | |
| 85 | /** |
| 86 | * Stop alarming beep sound, vibrating, and TTS if initialized. |
| 87 | */ |
| 88 | @VisibleForTesting |
| 89 | public void stopAlarm() { |
| 90 | stopPlayer(); |
| 91 | stopVibrate(); |
| 92 | } |
| 93 | |
| 94 | @VisibleForTesting |
| 95 | protected void playSound(Context context) { |
| 96 | Uri uri = new Uri.Builder() |
| 97 | .scheme(ContentResolver.SCHEME_ANDROID_RESOURCE) |
| 98 | .authority(context.getBasePackageName()) |
| 99 | .appendPath(Integer.toString(R.raw.overheat_alarm)).build(); |
| 100 | |
| 101 | if (mPlayer == null) { |
| 102 | mPlayer = new NotificationPlayer(TAG); |
| 103 | } |
| 104 | mPlayer.setUsesWakeLock(context); |
| 105 | mPlayer.play(context, uri, true /* looping */, getAlertAudioAttributes()); |
| 106 | } |
| 107 | |
| 108 | @VisibleForTesting |
| 109 | protected void stopPlayer() { |
| 110 | if (mPlayer != null) { |
| 111 | mPlayer.stop(); |
| 112 | mPlayer = null; |
| 113 | } |
| 114 | } |
| 115 | |
| 116 | @VisibleForTesting |
| 117 | protected void startVibrate() { |
| 118 | mShouldVibrate = true; |
| 119 | if (mVibrationEffect == null) { |
| 120 | mVibrationEffect = VibrationEffect.createWaveform(VIBRATION_PATTERN, -1); |
| 121 | } |
| 122 | performVibrate(); |
| 123 | } |
| 124 | |
| 125 | @VisibleForTesting |
| 126 | protected void performVibrate() { |
| 127 | if (mShouldVibrate && mVibrator != null) { |
| 128 | mVibrator.vibrate(mVibrationEffect, getAlertAudioAttributes()); |
| 129 | Handler.getMain().sendMessageDelayed( |
| 130 | obtainMessage(OverheatAlarmController::performVibrate, this), |
| 131 | VIBRATION_INTERVAL); |
| 132 | } |
| 133 | } |
| 134 | |
| 135 | @VisibleForTesting |
| 136 | protected void stopVibrate() { |
| 137 | if (mVibrator != null) { |
| 138 | mVibrator.cancel(); |
| 139 | } |
| 140 | mShouldVibrate = false; |
| 141 | } |
| 142 | |
| 143 | /** |
| 144 | * Build AudioAttributes for mPlayer(NotificationPlayer) and vibrator |
| 145 | * Use the alarm channel so it can vibrate in DnD mode, unless alarms are |
| 146 | * specifically disabled in DnD. |
| 147 | */ |
| 148 | private static AudioAttributes getAlertAudioAttributes() { |
| 149 | AudioAttributes.Builder builder = new AudioAttributes.Builder(); |
| 150 | builder.setContentType(AudioAttributes.CONTENT_TYPE_SONIFICATION); |
| 151 | builder.setUsage(AudioAttributes.USAGE_ALARM); |
| 152 | // Set FLAG_BYPASS_INTERRUPTION_POLICY and FLAG_BYPASS_MUTE so that it enables |
| 153 | // audio in any DnD mode, even in total silence DnD mode (requires MODIFY_PHONE_STATE). |
| 154 | builder.setFlags( |
| 155 | AudioAttributes.FLAG_BYPASS_INTERRUPTION_POLICY | AudioAttributes.FLAG_BYPASS_MUTE); |
| 156 | return builder.build(); |
| 157 | } |
| 158 | } |