src/com/owncloud/android/media/MediaService.java

   1 /* ownCloud Android client application
   2  *   Copyright 2013 ownCloud Inc.
   3  *
   4  *   This program is free software: you can redistribute it and/or modify
   5  *   it under the terms of the GNU General Public License as published by
   6  *   the Free Software Foundation, either version 3 of the License, or
   7  *   (at your option) any later version.
   8  *
   9  *   This program is distributed in the hope that it will be useful,
  10  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  *   GNU General Public License for more details.
  13  *
  14  *   You should have received a copy of the GNU General Public License
  15  *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  *
  17  */
  18
  19 package com.owncloud.android.media;
  20
  21 import android.accounts.Account;
  22 import android.app.Notification;
  23 import android.app.NotificationManager;
  24 import android.app.PendingIntent;
  25 import android.app.Service;
  26 import android.content.Context;
  27 import android.content.Intent;
  28 import android.media.AudioManager;
  29 import android.media.MediaPlayer;
  30 import android.media.MediaPlayer.OnCompletionListener;
  31 import android.media.MediaPlayer.OnErrorListener;
  32 import android.media.MediaPlayer.OnPreparedListener;
  33 import android.net.wifi.WifiManager;
  34 import android.net.wifi.WifiManager.WifiLock;
  35 import android.os.IBinder;
  36 import android.os.PowerManager;
  37 import android.util.Log;
  38 import android.widget.MediaController;
  39 import android.widget.Toast;
  40
  41 import java.io.IOException;
  42
  43 import com.owncloud.android.AccountUtils;
  44 import com.owncloud.android.R;
  45 import com.owncloud.android.datamodel.OCFile;
  46 import com.owncloud.android.ui.activity.FileDetailActivity;
  47 import com.owncloud.android.ui.fragment.FileDetailFragment;
  48
  49 /**
  50  * Service that handles media playback, both audio and video.
  51  *
  52  * Waits for Intents which signal the service to perform specific operations: Play, Pause,
  53  * Rewind, etc.
  54  *
  55  * @author David A. Velasco
  56  */
  57 public class MediaService extends Service implements OnCompletionListener, OnPreparedListener,
  58                 OnErrorListener, AudioManager.OnAudioFocusChangeListener {
  59
  60     private static final String TAG = MediaService.class.getSimpleName();
  61
  62     private static final String MY_PACKAGE = MediaService.class.getPackage() != null ? MediaService.class.getPackage().getName() : "com.owncloud.android.media";
  63
  64     /// Intent actions that we are prepared to handle
  65     public static final String ACTION_PLAY_FILE = MY_PACKAGE + ".android.media.action.PLAY_FILE";
  66
  67     /// Keys to add extras to the action
  68     public static final String EXTRA_FILE = MY_PACKAGE + ".extra.FILE";
  69     public static final String EXTRA_ACCOUNT = MY_PACKAGE + ".extra.ACCOUNT";
  70
  71     /** Error code for specific messages - see regular error codes at {@link MediaPlayer} */
  72     public static final int OC_MEDIA_ERROR = 0;
  73
  74     /** Time To keep the control panel visible when the user does not use it */
  75     public static final int MEDIA_CONTROL_LIFE = 5000;
  76
  77     /** Volume to set when audio focus is lost and ducking is allowed */
  78     private static final float DUCK_VOLUME = 0.1f;
  79
  80     /** Media player instance */
  81     private MediaPlayer mPlayer = null;
  82
  83     /** Reference to the system AudioManager */
  84     private AudioManager mAudioManager = null;
  85
  86
  87     /** Values to indicate the state of the service */
  88     enum State {
  89         STOPPED,
  90         PREPARING,
  91         PLAYING,
  92         PAUSED
  93     };
  94
  95
  96     /** Current state */
  97     private State mState = State.STOPPED;
  98
  99     /** Possible focus values */
 100     enum AudioFocus {
 101         NO_FOCUS,
 102         NO_FOCUS_CAN_DUCK,
 103         FOCUS
 104     }
 105
 106     /** Current focus state */
 107     private AudioFocus mAudioFocus = AudioFocus.NO_FOCUS;
 108
 109
 110     /** 'True' when the current song is streaming from the network */
 111     private boolean mIsStreaming = false;
 112
 113     /** Wifi lock kept to prevents the device from shutting off the radio when streaming a file. */
 114     private WifiLock mWifiLock;
 115
 116     private static final String MEDIA_WIFI_LOCK_TAG = MY_PACKAGE + ".WIFI_LOCK";
 117
 118     /** Notification to keep in the notification bar while a song is playing */
 119     private NotificationManager mNotificationManager;
 120     private Notification mNotification = null;
 121
 122     /** File being played */
 123     private OCFile mFile;
 124
 125     /** Account holding the file being played */
 126     private Account mAccount;
 127
 128     /** Interface to access the service through binding */
 129     private IBinder mBinder;
 130
 131     /** Control panel shown to the user to control the playback, to register through binding */
 132     private MediaController mMediaController;
 133
 134
 135
 136     /**
 137      * Helper method to get an error message suitable to show to users for errors occurred in media playback,
 138      *
 139      * @param context   A context to access string resources.
 140      * @param what      See {@link MediaPlayer.OnErrorListener#onError(MediaPlayer, int, int)
 141      * @param extra     See {@link MediaPlayer.OnErrorListener#onError(MediaPlayer, int, int)
 142      * @return          Message suitable to users.
 143      */
 144     public static String getMessageForMediaError(Context context, int what, int extra) {
 145         int messageId;
 146
 147         if (what == OC_MEDIA_ERROR) {
 148             messageId = extra;
 149
 150         } else if (extra == MediaPlayer.MEDIA_ERROR_UNSUPPORTED) {
 151             /*  Added in API level 17
 152                 Bitstream is conforming to the related coding standard or file spec, but the media framework does not support the feature.
 153                 Constant Value: -1010 (0xfffffc0e)
 154              */
 155             messageId = R.string.media_err_unsupported;
 156
 157         } else if (extra == MediaPlayer.MEDIA_ERROR_IO) {
 158             /*  Added in API level 17
 159                 File or network related operation errors.
 160                 Constant Value: -1004 (0xfffffc14)
 161              */
 162             messageId = R.string.media_err_io;
 163
 164         } else if (extra == MediaPlayer.MEDIA_ERROR_MALFORMED) {
 165             /*  Added in API level 17
 166                 Bitstream is not conforming to the related coding standard or file spec.
 167                 Constant Value: -1007 (0xfffffc11)
 168              */
 169             messageId = R.string.media_err_malformed;
 170
 171         } else if (extra == MediaPlayer.MEDIA_ERROR_TIMED_OUT) {
 172             /*  Added in API level 17
 173                 Some operation takes too long to complete, usually more than 3-5 seconds.
 174                 Constant Value: -110 (0xffffff92)
 175             */
 176             messageId = R.string.media_err_timeout;
 177
 178         } else if (what == MediaPlayer.MEDIA_ERROR_NOT_VALID_FOR_PROGRESSIVE_PLAYBACK) {
 179             /*  Added in API level 3
 180                 The video is streamed and its container is not valid for progressive playback i.e the video's index (e.g moov atom) is not at the start of the file.
 181                 Constant Value: 200 (0x000000c8)
 182             */
 183             messageId = R.string.media_err_invalid_progressive_playback;
 184
 185         } else {
 186             /*  MediaPlayer.MEDIA_ERROR_UNKNOWN
 187                 Added in API level 1
 188                 Unspecified media player error.
 189                 Constant Value: 1 (0x00000001)
 190             */
 191             /*  MediaPlayer.MEDIA_ERROR_SERVER_DIED)
 192                 Added in API level 1
 193                 Media server died. In this case, the application must release the MediaPlayer object and instantiate a new one.
 194                 Constant Value: 100 (0x00000064)
 195              */
 196             messageId = R.string.media_err_unknown;
 197         }
 198         return context.getString(messageId);
 199     }
 200
 201
 202
 203     /**
 204      * Initialize a service instance
 205      *
 206      * {@inheritDoc}
 207      */
 208     @Override
 209     public void onCreate() {
 210         Log.d(TAG, "Creating ownCloud media service");
 211
 212         mWifiLock = ((WifiManager) getSystemService(Context.WIFI_SERVICE)).
 213                 createWifiLock(WifiManager.WIFI_MODE_FULL, MEDIA_WIFI_LOCK_TAG);
 214
 215         mNotificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
 216         mAudioManager = (AudioManager) getSystemService(AUDIO_SERVICE);
 217         mBinder = new MediaServiceBinder(this);
 218     }
 219
 220
 221     /**
 222      * Entry point for Intents requesting actions, sent here via startService.
 223      *
 224      * {@inheritDoc}
 225      */
 226     @Override
 227     public int onStartCommand(Intent intent, int flags, int startId) {
 228         String action = intent.getAction();
 229         if (action.equals(ACTION_PLAY_FILE)) {
 230             processPlayFileRequest(intent);
 231         }
 232
 233         return START_NOT_STICKY; // don't want it to restart in case it's killed.
 234     }
 235
 236
 237     /**
 238      * Processes a request to play a media file received as a parameter
 239      *
 240      * TODO If a new request is received when a file is being prepared, it is ignored. Is this what we want?
 241      *
 242      * @param intent    Intent received in the request with the data to identify the file to play.
 243      */
 244     private void processPlayFileRequest(Intent intent) {
 245         if (mState != State.PREPARING) {
 246             mFile = intent.getExtras().getParcelable(EXTRA_FILE);
 247             mAccount = intent.getExtras().getParcelable(EXTRA_ACCOUNT);
 248             tryToGetAudioFocus();
 249             playMedia();
 250         }
 251     }
 252
 253
 254     /**
 255      * Processes a request to play a media file.
 256      */
 257     protected void processPlayRequest() {
 258         // request audio focus
 259         tryToGetAudioFocus();
 260
 261         // actually play the song
 262         if (mState == State.STOPPED) {
 263             // (re)start playback
 264             playMedia();
 265
 266         } else if (mState == State.PAUSED) {
 267             // continue playback
 268             mState = State.PLAYING;
 269             setUpAsForeground(String.format(getString(R.string.media_state_playing), mFile.getFileName()));
 270             configAndStartMediaPlayer();
 271
 272         }
 273     }
 274
 275
 276     /**
 277      * Makes sure the media player exists and has been reset. This will create the media player
 278      * if needed, or reset the existing media player if one already exists.
 279      */
 280     protected void createMediaPlayerIfNeeded() {
 281         if (mPlayer == null) {
 282             mPlayer = new MediaPlayer();
 283
 284             // make sure the CPU won't go to sleep while media is playing
 285             mPlayer.setWakeMode(getApplicationContext(), PowerManager.PARTIAL_WAKE_LOCK);
 286
 287             // the media player will notify the service when it's ready preparing, and when it's done playing
 288             mPlayer.setOnPreparedListener(this);
 289             mPlayer.setOnCompletionListener(this);
 290             mPlayer.setOnErrorListener(this);
 291
 292         } else {
 293             mPlayer.reset();
 294         }
 295     }
 296
 297     /**
 298      * Processes a request to pause the current playback
 299      */
 300     protected void processPauseRequest() {
 301         if (mState == State.PLAYING) {
 302             mState = State.PAUSED;
 303             mPlayer.pause();
 304             releaseResources(false); // retain media player in pause
 305             // TODO polite audio focus, instead of keep it owned; or not?
 306         }
 307     }
 308
 309
 310     /**
 311      * Processes a request to stop the playback.
 312      *
 313      * @param   force       When 'true', the playback is stopped no matter the value of mState
 314      */
 315     protected void processStopRequest(boolean force) {
 316         if (mState != State.PREPARING || force) {
 317             mState = State.STOPPED;
 318             mFile = null;
 319             mAccount = null;
 320             releaseResources(true);
 321             giveUpAudioFocus();
 322             stopSelf();     // service is no longer necessary
 323         }
 324     }
 325
 326
 327     /**
 328      * Releases resources used by the service for playback. This includes the "foreground service"
 329      * status and notification, the wake locks and possibly the MediaPlayer.
 330      *
 331      * @param releaseMediaPlayer    Indicates whether the Media Player should also be released or not
 332      */
 333     protected void releaseResources(boolean releaseMediaPlayer) {
 334         // stop being a foreground service
 335         stopForeground(true);
 336
 337         // stop and release the Media Player, if it's available
 338         if (releaseMediaPlayer && mPlayer != null) {
 339             mPlayer.reset();
 340             mPlayer.release();
 341             mPlayer = null;
 342         }
 343
 344         // release the Wifi lock, if holding it
 345         if (mWifiLock.isHeld()) {
 346             mWifiLock.release();
 347         }
 348     }
 349
 350
 351     /**
 352      * Fully releases the audio focus.
 353      */
 354     private void giveUpAudioFocus() {
 355         if (mAudioFocus == AudioFocus.FOCUS
 356                 && mAudioManager != null
 357                 && AudioManager.AUDIOFOCUS_REQUEST_GRANTED == mAudioManager.abandonAudioFocus(this))  {
 358
 359             mAudioFocus = AudioFocus.NO_FOCUS;
 360         }
 361     }
 362
 363
 364     /**
 365      * Reconfigures MediaPlayer according to audio focus settings and starts/restarts it.
 366      */
 367     protected void configAndStartMediaPlayer() {
 368         if (mPlayer == null) {
 369             throw new IllegalStateException("mPlayer is NULL");
 370         }
 371
 372         if (mAudioFocus == AudioFocus.NO_FOCUS) {
 373             if (mPlayer.isPlaying()) {
 374                 mPlayer.pause();        // have to be polite; but mState is not changed, to resume when focus is received again
 375             }
 376
 377         }  else {
 378             if (mAudioFocus == AudioFocus.NO_FOCUS_CAN_DUCK) {
 379                 mPlayer.setVolume(DUCK_VOLUME, DUCK_VOLUME);
 380
 381             } else {
 382                 mPlayer.setVolume(1.0f, 1.0f); // full volume
 383             }
 384
 385             if (!mPlayer.isPlaying()) {
 386                 mPlayer.start();
 387             }
 388         }
 389     }
 390
 391
 392     /**
 393      * Requests the audio focus to the Audio Manager
 394      */
 395     private void tryToGetAudioFocus() {
 396         if (mAudioFocus != AudioFocus.FOCUS
 397                 && mAudioManager != null
 398                 && (AudioManager.AUDIOFOCUS_REQUEST_GRANTED == mAudioManager.requestAudioFocus( this,
 399                                                                                                 AudioManager.STREAM_MUSIC,
 400                                                                                                 AudioManager.AUDIOFOCUS_GAIN))
 401                 ) {
 402             mAudioFocus = AudioFocus.FOCUS;
 403         }
 404     }
 405
 406
 407     /**
 408      * Starts playing the current media file.
 409      */
 410     protected void playMedia() {
 411         mState = State.STOPPED;
 412         releaseResources(false); // release everything except MediaPlayer
 413
 414         try {
 415             if (mFile == null) {
 416                 Toast.makeText(this, R.string.media_err_nothing_to_play, Toast.LENGTH_LONG).show();
 417                 processStopRequest(true);
 418                 return;
 419
 420             } else if (mAccount == null) {
 421                 Toast.makeText(this, R.string.media_err_not_in_owncloud, Toast.LENGTH_LONG).show();
 422                 processStopRequest(true);
 423                 return;
 424             }
 425
 426             createMediaPlayerIfNeeded();
 427             mPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
 428             String url = mFile.getStoragePath();
 429             if (url == null || url.length() <= 0) {
 430                 url = AccountUtils.constructFullURLForAccount(this, mAccount) + mFile.getRemotePath();
 431             }
 432             mIsStreaming = url.startsWith("http:") || url.startsWith("https:");
 433
 434             mPlayer.setDataSource(url);
 435
 436             mState = State.PREPARING;
 437             setUpAsForeground(String.format(getString(R.string.media_state_loading), mFile.getFileName()));
 438
 439             // starts preparing the media player in background
 440             mPlayer.prepareAsync();
 441
 442             // prevent the Wifi from going to sleep when streaming
 443             if (mIsStreaming) {
 444                 mWifiLock.acquire();
 445             } else if (mWifiLock.isHeld()) {
 446                 mWifiLock.release();
 447             }
 448
 449         } catch (SecurityException e) {
 450             Log.e(TAG, "SecurityException playing " + mAccount.name + mFile.getRemotePath(), e);
 451             Toast.makeText(this, String.format(getString(R.string.media_err_security_ex), mFile.getFileName()), Toast.LENGTH_LONG).show();
 452             processStopRequest(true);
 453
 454         } catch (IOException e) {
 455             Log.e(TAG, "IOException playing " + mAccount.name + mFile.getRemotePath(), e);
 456             Toast.makeText(this, String.format(getString(R.string.media_err_io_ex), mFile.getFileName()), Toast.LENGTH_LONG).show();
 457             processStopRequest(true);
 458
 459         } catch (IllegalStateException e) {
 460             Log.e(TAG, "IllegalStateException " + mAccount.name + mFile.getRemotePath(), e);
 461             Toast.makeText(this, String.format(getString(R.string.media_err_unexpected), mFile.getFileName()), Toast.LENGTH_LONG).show();
 462             processStopRequest(true);
 463
 464         } catch (IllegalArgumentException e) {
 465             Log.e(TAG, "IllegalArgumentException " + mAccount.name + mFile.getRemotePath(), e);
 466             Toast.makeText(this, String.format(getString(R.string.media_err_unexpected), mFile.getFileName()), Toast.LENGTH_LONG).show();
 467             processStopRequest(true);
 468         }
 469     }
 470
 471
 472     /** Called when media player is done playing current song. */
 473     public void onCompletion(MediaPlayer player) {
 474         if (mMediaController != null) {
 475             mMediaController.hide();
 476         }
 477         Toast.makeText(this, String.format(getString(R.string.media_event_done, mFile.getFileName())), Toast.LENGTH_LONG).show();
 478         processStopRequest(true);
 479         return;
 480     }
 481
 482
 483     /**
 484      * Called when media player is done preparing.
 485      *
 486      * Time to start.
 487      */
 488     public void onPrepared(MediaPlayer player) {
 489         mState = State.PLAYING;
 490         updateNotification(String.format(getString(R.string.media_state_playing), mFile.getFileName()));
 491         if (mMediaController != null) {
 492             mMediaController.setEnabled(true);
 493         }
 494         configAndStartMediaPlayer();
 495         if (mMediaController != null) {
 496             mMediaController.show(MEDIA_CONTROL_LIFE);
 497         }
 498     }
 499
 500
 501     /**
 502      * Updates the status notification
 503      */
 504     @SuppressWarnings("deprecation")
 505     private void updateNotification(String content) {
 506         // TODO check if updating the Intent is really necessary
 507         Intent showDetailsIntent = new Intent(this, FileDetailActivity.class);
 508         showDetailsIntent.putExtra(FileDetailFragment.EXTRA_FILE, mFile);
 509         showDetailsIntent.putExtra(FileDetailFragment.EXTRA_ACCOUNT, mAccount);
 510         showDetailsIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
 511         mNotification.contentIntent = PendingIntent.getActivity(getApplicationContext(),
 512                                                                 (int)System.currentTimeMillis(),
 513                                                                 showDetailsIntent,
 514                                                                 PendingIntent.FLAG_UPDATE_CURRENT);
 515         mNotification.when = System.currentTimeMillis();
 516         //mNotification.contentView.setTextViewText(R.id.status_text, content);
 517         String ticker = String.format(getString(R.string.media_notif_ticker), getString(R.string.app_name));
 518         mNotification.setLatestEventInfo(getApplicationContext(), ticker, content, mNotification.contentIntent);
 519         mNotificationManager.notify(R.string.media_notif_ticker, mNotification);
 520     }
 521
 522
 523     /**
 524      * Configures the service as a foreground service.
 525      *
 526      * The system will avoid finishing the service as much as possible when resources as low.
 527      *
 528      * A notification must be created to keep the user aware of the existance of the service.
 529      */
 530     @SuppressWarnings("deprecation")
 531     private void setUpAsForeground(String content) {
 532         /// creates status notification
 533         // TODO put a progress bar to follow the playback progress
 534         mNotification = new Notification();
 535         mNotification.icon = android.R.drawable.ic_media_play;
 536         //mNotification.tickerText = text;
 537         mNotification.when = System.currentTimeMillis();
 538         mNotification.flags |= Notification.FLAG_ONGOING_EVENT;
 539         //mNotification.contentView.setTextViewText(R.id.status_text, "ownCloud Music Player");     // NULL POINTER
 540         //mNotification.contentView.setTextViewText(R.id.status_text, getString(R.string.downloader_download_in_progress_content));
 541
 542
 543         /// includes a pending intent in the notification showing the details view of the file
 544         Intent showDetailsIntent = new Intent(this, FileDetailActivity.class);
 545         showDetailsIntent.putExtra(FileDetailFragment.EXTRA_FILE, mFile);
 546         showDetailsIntent.putExtra(FileDetailFragment.EXTRA_ACCOUNT, mAccount);
 547         showDetailsIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
 548         mNotification.contentIntent = PendingIntent.getActivity(getApplicationContext(),
 549                                                                 (int)System.currentTimeMillis(),
 550                                                                 showDetailsIntent,
 551                                                                 PendingIntent.FLAG_UPDATE_CURRENT);
 552
 553
 554         //mNotificationManager.notify(R.string.downloader_download_in_progress_ticker, mNotification);
 555         String ticker = String.format(getString(R.string.media_notif_ticker), getString(R.string.app_name));
 556         mNotification.setLatestEventInfo(getApplicationContext(), ticker, content, mNotification.contentIntent);
 557         startForeground(R.string.media_notif_ticker, mNotification);
 558
 559     }
 560
 561     /**
 562      * Called when there's an error playing media.
 563      *
 564      * Warns the user about the error and resets the media player.
 565      */
 566     public boolean onError(MediaPlayer mp, int what, int extra) {
 567         Log.e(TAG, "Error in audio playback, what = " + what + ", extra = " + extra);
 568
 569         if (mMediaController != null) {
 570             mMediaController.hide();
 571         }
 572
 573         String message = getMessageForMediaError(this, what, extra);
 574         Toast.makeText(getApplicationContext(), message, Toast.LENGTH_SHORT).show();
 575
 576         processStopRequest(true);
 577         return true;
 578     }
 579
 580     /**
 581      * Called by the system when another app tries to play some sound.
 582      *
 583      * {@inheritDoc}
 584      */
 585     @Override
 586     public void onAudioFocusChange(int focusChange) {
 587         if (focusChange > 0) {
 588             // focus gain; check AudioManager.AUDIOFOCUS_* values
 589             mAudioFocus = AudioFocus.FOCUS;
 590             // restart media player with new focus settings
 591             if (mState == State.PLAYING)
 592                 configAndStartMediaPlayer();
 593
 594         } else if (focusChange < 0) {
 595             // focus loss; check AudioManager.AUDIOFOCUS_* values
 596             boolean canDuck = AudioManager.AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK == focusChange;
 597                 mAudioFocus = canDuck ? AudioFocus.NO_FOCUS_CAN_DUCK : AudioFocus.NO_FOCUS;
 598                 // start/restart/pause media player with new focus settings
 599                 if (mPlayer != null && mPlayer.isPlaying())
 600                     configAndStartMediaPlayer();
 601         }
 602
 603     }
 604
 605     /**
 606      * Called when the service is finished for final clean-up.
 607      *
 608      * {@inheritDoc}
 609      */
 610     @Override
 611     public void onDestroy() {
 612         mState = State.STOPPED;
 613         releaseResources(true);
 614         giveUpAudioFocus();
 615     }
 616
 617
 618     /**
 619      * Provides a binder object that clients can use to perform operations on the MediaPlayer managed by the MediaService.
 620      */
 621     @Override
 622     public IBinder onBind(Intent arg) {
 623         return mBinder;
 624     }
 625
 626
 627     /**
 628      * Called when ALL the bound clients were onbound.
 629      *
 630      * The service is destroyed if playback stopped or paused
 631      */
 632     @Override
 633     public boolean onUnbind(Intent intent) {
 634         if (mState == State.PAUSED || mState == State.STOPPED)  {
 635             processStopRequest(false);
 636         }
 637         return false;   // not accepting rebinding (default behaviour)
 638     }
 639
 640
 641     /**
 642      * Accesses the current MediaPlayer instance in the service.
 643      *
 644      * To be handled carefully. Visibility is protected to be accessed only
 645      *
 646      * @return Current MediaPlayer instance handled by MediaService.
 647      */
 648     protected MediaPlayer getPlayer() {
 649         return mPlayer;
 650     }
 651
 652
 653     /**
 654      * Accesses the current OCFile loaded in the service.
 655      *
 656      * @return  The current OCFile loaded in the service.
 657      */
 658     protected OCFile getCurrentFile() {
 659         return mFile;
 660     }
 661
 662
 663     /**
 664      * Accesses the current {@link State} of the MediaService.
 665      *
 666      * @return  The current {@link State} of the MediaService.
 667      */
 668     protected State getState() {
 669         return mState;
 670     }
 671
 672
 673     protected void setMediaContoller(MediaController mediaController) {
 674         if (mMediaController != null) {
 675             mMediaController.hide();
 676         }
 677         mMediaController = mediaController;
 678
 679     }
 680
 681     protected MediaController getMediaController() {
 682         return mMediaController;
 683     }
 684
 685 }