/*
* Copyright (C) 2008 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.deskclock;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.content.res.AssetFileDescriptor;
import android.content.res.Resources;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnErrorListener;
import android.media.RingtoneManager;
import android.net.Uri;
import android.os.Bundle;
import android.os.Handler;
import android.os.IBinder;
import android.os.Message;
import android.os.Vibrator;
import android.preference.PreferenceManager;
import android.telephony.PhoneStateListener;
import android.telephony.TelephonyManager;
/**
* Manages alarms and vibe. Runs as a service so that it can continue to play
* if another activity overrides the AlarmAlert dialog.
*/
public class AlarmKlaxon extends Service {
// Default of 10 minutes until alarm is silenced.
private static final String DEFAULT_ALARM_TIMEOUT = "10";
private static final long[] sVibratePattern = new long[] { 500, 500 };
private boolean mPlaying = false;
private Vibrator mVibrator;
private MediaPlayer mMediaPlayer;
private Alarm mCurrentAlarm;
private long mStartTime;
private TelephonyManager mTelephonyManager;
private int mInitialCallState;
// Internal messages
private static final int KILLER = 1000;
private Handler mHandler = new Handler() {
public void handleMessage(Message msg) {
switch (msg.what) {
case KILLER:
if (Log.LOGV) {
Log.v("*********** Alarm killer triggered ***********");
}
sendKillBroadcast((Alarm) msg.obj);
stopSelf();
break;
}
}
};
private PhoneStateListener mPhoneStateListener = new PhoneStateListener() {
@Override
public void onCallStateChanged(int state, String ignored) {
// The user might already be in a call when the alarm fires. When
// we register onCallStateChanged, we get the initial in-call state
// which kills the alarm. Check against the initial call state so
// we don't kill the alarm during a call.
if (state != TelephonyManager.CALL_STATE_IDLE
&& state != mInitialCallState) {
sendKillBroadcast(mCurrentAlarm);
stopSelf();
}
}
};
@Override
public void onCreate() {
mVibrator = (Vibrator) getSystemService(Context.VIBRATOR_SERVICE);
// Listen for incoming calls to kill the alarm.
mTelephonyManager =
(TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
mTelephonyManager.listen(
mPhoneStateListener, PhoneStateListener.LISTEN_CALL_STATE);
AlarmAlertWakeLock.acquireCpuWakeLock(this);
}
@Override
public void onDestroy() {
stop();
// Stop listening for incoming calls.
mTelephonyManager.listen(mPhoneStateListener, 0);
AlarmAlertWakeLock.releaseCpuLock();
}
@Override
public IBinder onBind(Intent intent) {
return null;
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
// No intent, tell the system not to restart us.
if (intent == null) {
stopSelf();
return START_NOT_STICKY;
}
final Alarm alarm = intent.getParcelableExtra(
Alarms.ALARM_INTENT_EXTRA);
if (alarm == null) {
Log.v("AlarmKlaxon failed to parse the alarm from the intent");
stopSelf();
return START_NOT_STICKY;
}
if (mCurrentAlarm != null) {
sendKillBroadcast(mCurrentAlarm);
}
play(alarm);
mCurrentAlarm = alarm;
// Record the initial call state here so that the new alarm has the
// newest state.
mInitialCallState = mTelephonyManager.getCallState();
return START_STICKY;
}
private void sendKillBroadcast(Alarm alarm) {
long millis = System.currentTimeMillis() - mStartTime;
int minutes = (int) Math.round(millis / 60000.0);
Intent alarmKilled = new Intent(Alarms.ALARM_KILLED);
alarmKilled.putExtra(Alarms.ALARM_INTENT_EXTRA, alarm);
alarmKilled.putExtra(Alarms.ALARM_KILLED_TIMEOUT, minutes);
sendBroadcast(alarmKilled);
}
// Volume suggested by media team for in-call alarms.
private static final float IN_CALL_VOLUME = 0.125f;
private void play(Alarm alarm) {
// stop() checks to see if we are already playing.
stop();
if (Log.LOGV) {
Log.v("AlarmKlaxon.play() " + alarm.id + " alert " + alarm.alert);
}
if (!alarm.silent) {
Uri alert = alarm.alert;
// Fall back on the default alarm if the database does not have an
// alarm stored.
if (alert == null) {
alert = RingtoneManager.getDefaultUri(
RingtoneManager.TYPE_ALARM);
if (Log.LOGV) {
Log.v("Using default alarm: " + alert.toString());
}
}
// TODO: Reuse mMediaPlayer instead of creating a new one and/or use
// RingtoneManager.
mMediaPlayer = new MediaPlayer();
mMediaPlayer.setOnErrorListener(new OnErrorListener() {
public boolean onError(MediaPlayer mp, int what, int extra) {
Log.e("Error occurred while playing audio.");
mp.stop();
mp.release();
mMediaPlayer = null;
return true;
}
});
try {
// Check if we are in a call. If we are, use the in-call alarm
// resource at a low volume to not disrupt the call.
if (mTelephonyManager.getCallState()
!= TelephonyManager.CALL_STATE_IDLE) {
Log.v("Using the in-call alarm");
mMediaPlayer.setVolume(IN_CALL_VOLUME, IN_CALL_VOLUME);
setDataSourceFromResource(getResources(), mMediaPlayer,
R.raw.in_call_alarm);
} else {
mMediaPlayer.setDataSource(this, alert);
}
startAlarm(mMediaPlayer);
} catch (Exception ex) {
Log.v("Using the fallback ringtone");
// The alert may be on the sd card which could be busy right
// now. Use the fallback ringtone.
try {
// Must reset the media player to clear the error state.
mMediaPlayer.reset();
setDataSourceFromResource(getResources(), mMediaPlayer,
R.raw.fallbackring);
startAlarm(mMediaPlayer);
} catch (Exception ex2) {
// At this point we just don't play anything.
Log.e("Failed to play fallback ringtone", ex2);
}
}
}
/* Start the vibrator after everything is ok with the media player */
if (alarm.vibrate) {
mVibrator.vibrate(sVibratePattern, 0);
} else {
mVibrator.cancel();
}
enableKiller(alarm);
mPlaying = true;
mStartTime = System.currentTimeMillis();
}
// Do the common stuff when starting the alarm.
private void startAlarm(MediaPlayer player)
throws java.io.IOException, IllegalArgumentException,
IllegalStateException {
final AudioManager audioManager = (AudioManager)getSystemService(Context.AUDIO_SERVICE);
// do not play alarms if stream volume is 0
// (typically because ringer mode is silent).
if (audioManager.getStreamVolume(AudioManager.STREAM_ALARM) != 0) {
player.setAudioStreamType(AudioManager.STREAM_ALARM);
player.setLooping(true);
player.prepare();
player.start();
}
}
private void setDataSourceFromResource(Resources resources,
MediaPlayer player, int res) throws java.io.IOException {
AssetFileDescriptor afd = resources.openRawResourceFd(res);
if (afd != null) {
player.setDataSource(afd.getFileDescriptor(), afd.getStartOffset(),
afd.getLength());
afd.close();
}
}
/**
* Stops alarm audio and disables alarm if it not snoozed and not
* repeating
*/
public void stop() {
if (Log.LOGV) Log.v("AlarmKlaxon.stop()");
if (mPlaying) {
mPlaying = false;
Intent alarmDone = new Intent(Alarms.ALARM_DONE_ACTION);
sendBroadcast(alarmDone);
// Stop audio playing
if (mMediaPlayer != null) {
mMediaPlayer.stop();
mMediaPlayer.release();
mMediaPlayer = null;
}
// Stop vibrator
mVibrator.cancel();
}
disableKiller();
}
/**
* Kills alarm audio after ALARM_TIMEOUT_SECONDS, so the alarm
* won't run all day.
*
* This just cancels the audio, but leaves the notification
* popped, so the user will know that the alarm tripped.
*/
private void enableKiller(Alarm alarm) {
final String autoSnooze =
PreferenceManager.getDefaultSharedPreferences(this)
.getString(SettingsActivity.KEY_AUTO_SILENCE,
DEFAULT_ALARM_TIMEOUT);
int autoSnoozeMinutes = Integer.parseInt(autoSnooze);
if (autoSnoozeMinutes != -1) {
mHandler.sendMessageDelayed(mHandler.obtainMessage(KILLER, alarm),
1000 * autoSnoozeMinutes * 60);
}
}
private void disableKiller() {
mHandler.removeMessages(KILLER);
}
}