| /* |
| * Copyright (C) 2007 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.music; |
| |
| import android.app.PendingIntent; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.graphics.Bitmap; |
| import android.media.MediaDescription; |
| import android.media.MediaMetadata; |
| import android.media.browse.MediaBrowser.MediaItem; |
| import android.media.session.MediaSession; |
| import android.media.session.PlaybackState; |
| import android.os.Bundle; |
| import android.os.Handler; |
| import android.os.Message; |
| import android.os.SystemClock; |
| import android.service.media.MediaBrowserService; |
| import android.text.TextUtils; |
| import android.util.Log; |
| import com.android.music.utils.*; |
| |
| import java.lang.ref.WeakReference; |
| import java.util.*; |
| |
| import static com.android.music.utils.MediaIDHelper.*; |
| |
| /** |
| * Provides "background" audio playback capabilities, allowing the |
| * user to switch between activities without stopping playback. |
| */ |
| public class MediaPlaybackService extends MediaBrowserService implements Playback.Callback { |
| private static final String TAG = LogHelper.makeLogTag(MediaPlaybackService.class); |
| |
| // Delay stopSelf by using a handler. |
| private static final int STOP_DELAY = 30000; |
| |
| public static final String ACTION_CMD = "com.android.music.ACTION_CMD"; |
| public static final String CMD_NAME = "CMD_NAME"; |
| public static final String CMD_PAUSE = "CMD_PAUSE"; |
| public static final String CMD_REPEAT = "CMD_PAUSE"; |
| public static final String REPEAT_MODE = "REPEAT_MODE"; |
| |
| public enum RepeatMode { REPEAT_NONE, REPEAT_ALL, REPEAT_CURRENT } |
| |
| // Music catalog manager |
| private MusicProvider mMusicProvider; |
| private MediaSession mSession; |
| // "Now playing" queue: |
| private List<MediaSession.QueueItem> mPlayingQueue = null; |
| private int mCurrentIndexOnQueue = -1; |
| private MediaNotificationManager mMediaNotificationManager; |
| // Indicates whether the service was started. |
| private boolean mServiceStarted; |
| private DelayedStopHandler mDelayedStopHandler = new DelayedStopHandler(this); |
| private Playback mPlayback; |
| // Default mode is repeat none |
| private RepeatMode mRepeatMode = RepeatMode.REPEAT_NONE; |
| // Extra information for this session |
| private Bundle mExtras; |
| |
| public MediaPlaybackService() {} |
| |
| @Override |
| public void onCreate() { |
| LogHelper.d(TAG, "onCreate()"); |
| super.onCreate(); |
| LogHelper.d(TAG, "Create MusicProvider"); |
| mPlayingQueue = new ArrayList<>(); |
| mMusicProvider = new MusicProvider(this); |
| |
| LogHelper.d(TAG, "Create MediaSession"); |
| // Start a new MediaSession |
| mSession = new MediaSession(this, "MediaPlaybackService"); |
| // Set extra information |
| mExtras = new Bundle(); |
| mExtras.putInt(REPEAT_MODE, mRepeatMode.ordinal()); |
| mSession.setExtras(mExtras); |
| // Enable callbacks from MediaButtons and TransportControls |
| mSession.setFlags(MediaSession.FLAG_HANDLES_MEDIA_BUTTONS |
| | MediaSession.FLAG_HANDLES_TRANSPORT_CONTROLS); |
| // Set an initial PlaybackState with ACTION_PLAY, so media buttons can start the player |
| PlaybackState.Builder stateBuilder = new PlaybackState.Builder().setActions( |
| PlaybackState.ACTION_PLAY | PlaybackState.ACTION_PLAY_PAUSE); |
| mSession.setPlaybackState(stateBuilder.build()); |
| // MediaSessionCallback() has methods that handle callbacks from a media controller |
| mSession.setCallback(new MediaSessionCallback()); |
| // Set the session's token so that client activities can communicate with it. |
| setSessionToken(mSession.getSessionToken()); |
| |
| mPlayback = new Playback(this, mMusicProvider); |
| mPlayback.setState(PlaybackState.STATE_NONE); |
| mPlayback.setCallback(this); |
| mPlayback.start(); |
| |
| Context context = getApplicationContext(); |
| Intent intent = new Intent(context, MusicBrowserActivity.class); |
| PendingIntent pi = PendingIntent.getActivity( |
| context, 99 /*request code*/, intent, PendingIntent.FLAG_UPDATE_CURRENT); |
| mSession.setSessionActivity(pi); |
| |
| updatePlaybackState(null); |
| |
| mMediaNotificationManager = new MediaNotificationManager(this); |
| } |
| |
| @Override |
| public int onStartCommand(Intent startIntent, int flags, int startId) { |
| if (startIntent != null) { |
| String action = startIntent.getAction(); |
| String command = startIntent.getStringExtra(CMD_NAME); |
| if (ACTION_CMD.equals(action)) { |
| if (CMD_PAUSE.equals(command)) { |
| if (mPlayback != null && mPlayback.isPlaying()) { |
| handlePauseRequest(); |
| } |
| } |
| } |
| } |
| return START_STICKY; |
| } |
| |
| @Override |
| public void onDestroy() { |
| Log.d(TAG, "onDestroy"); |
| // Service is being killed, so make sure we release our resources |
| handleStopRequest(null); |
| |
| mDelayedStopHandler.removeCallbacksAndMessages(null); |
| // Always release the MediaSession to clean up resources |
| // and notify associated MediaController(s). |
| mSession.release(); |
| } |
| |
| @Override |
| public BrowserRoot onGetRoot(String clientPackageName, int clientUid, Bundle rootHints) { |
| Log.d(TAG, |
| "OnGetRoot: clientPackageName=" + clientPackageName + "; clientUid=" + clientUid |
| + " ; rootHints=" + rootHints); |
| // Allow everyone to browse |
| return new BrowserRoot(MEDIA_ID_ROOT, null); |
| } |
| |
| @Override |
| public void onLoadChildren(final String parentMediaId, final Result<List<MediaItem>> result) { |
| Log.d(TAG, "OnLoadChildren: parentMediaId=" + parentMediaId); |
| // Browsing not allowed |
| if (parentMediaId == null) { |
| result.sendResult(null); |
| return; |
| } |
| if (!mMusicProvider.isInitialized()) { |
| // Use result.detach to allow calling result.sendResult from another thread: |
| result.detach(); |
| |
| mMusicProvider.retrieveMediaAsync(new MusicProvider.MusicProviderCallback() { |
| @Override |
| public void onMusicCatalogReady(boolean success) { |
| Log.d(TAG, "Received catalog result, success: " + String.valueOf(success)); |
| if (success) { |
| onLoadChildren(parentMediaId, result); |
| } else { |
| result.sendResult(Collections.emptyList()); |
| } |
| } |
| }); |
| |
| } else { |
| // If our music catalog is already loaded/cached, load them into result immediately |
| List<MediaItem> mediaItems = new ArrayList<>(); |
| |
| switch (parentMediaId) { |
| case MEDIA_ID_ROOT: |
| Log.d(TAG, "OnLoadChildren.ROOT"); |
| mediaItems.add(new MediaItem(new MediaDescription.Builder() |
| .setMediaId(MEDIA_ID_MUSICS_BY_ARTIST) |
| .setTitle("Artists") |
| .build(), |
| MediaItem.FLAG_BROWSABLE)); |
| mediaItems.add(new MediaItem(new MediaDescription.Builder() |
| .setMediaId(MEDIA_ID_MUSICS_BY_ALBUM) |
| .setTitle("Albums") |
| .build(), |
| MediaItem.FLAG_BROWSABLE)); |
| mediaItems.add(new MediaItem(new MediaDescription.Builder() |
| .setMediaId(MEDIA_ID_MUSICS_BY_SONG) |
| .setTitle("Songs") |
| .build(), |
| MediaItem.FLAG_BROWSABLE)); |
| mediaItems.add(new MediaItem(new MediaDescription.Builder() |
| .setMediaId(MEDIA_ID_MUSICS_BY_PLAYLIST) |
| .setTitle("Playlists") |
| .build(), |
| MediaItem.FLAG_BROWSABLE)); |
| break; |
| case MEDIA_ID_MUSICS_BY_ARTIST: |
| Log.d(TAG, "OnLoadChildren.ARTIST"); |
| for (String artist : mMusicProvider.getArtists()) { |
| MediaItem item = new MediaItem( |
| new MediaDescription.Builder() |
| .setMediaId(MediaIDHelper.createBrowseCategoryMediaID( |
| MEDIA_ID_MUSICS_BY_ARTIST, artist)) |
| .setTitle(artist) |
| .build(), |
| MediaItem.FLAG_BROWSABLE); |
| mediaItems.add(item); |
| } |
| break; |
| case MEDIA_ID_MUSICS_BY_PLAYLIST: |
| LogHelper.d(TAG, "OnLoadChildren.PLAYLIST"); |
| for (String playlist : mMusicProvider.getPlaylists()) { |
| MediaItem item = new MediaItem( |
| new MediaDescription.Builder() |
| .setMediaId(MediaIDHelper.createBrowseCategoryMediaID( |
| MEDIA_ID_MUSICS_BY_PLAYLIST, playlist)) |
| .setTitle(playlist) |
| .build(), |
| MediaItem.FLAG_BROWSABLE); |
| mediaItems.add(item); |
| } |
| break; |
| case MEDIA_ID_MUSICS_BY_ALBUM: |
| Log.d(TAG, "OnLoadChildren.ALBUM"); |
| loadAlbum(mMusicProvider.getAlbums(), mediaItems); |
| break; |
| case MEDIA_ID_MUSICS_BY_SONG: |
| Log.d(TAG, "OnLoadChildren.SONG"); |
| String hierarchyAwareMediaID = MediaIDHelper.createBrowseCategoryMediaID( |
| parentMediaId, MEDIA_ID_MUSICS_BY_SONG); |
| loadSong(mMusicProvider.getMusicList(), mediaItems, hierarchyAwareMediaID); |
| break; |
| default: |
| if (parentMediaId.startsWith(MEDIA_ID_MUSICS_BY_ARTIST)) { |
| String artist = MediaIDHelper.getHierarchy(parentMediaId)[1]; |
| Log.d(TAG, "OnLoadChildren.SONGS_BY_ARTIST artist=" + artist); |
| loadAlbum(mMusicProvider.getAlbumByArtist(artist), mediaItems); |
| } else if (parentMediaId.startsWith(MEDIA_ID_MUSICS_BY_ALBUM)) { |
| String album = MediaIDHelper.getHierarchy(parentMediaId)[1]; |
| Log.d(TAG, "OnLoadChildren.SONGS_BY_ALBUM album=" + album); |
| loadSong(mMusicProvider.getMusicsByAlbum(album), mediaItems, parentMediaId); |
| } else if (parentMediaId.startsWith(MEDIA_ID_MUSICS_BY_PLAYLIST)) { |
| String playlist = MediaIDHelper.getHierarchy(parentMediaId)[1]; |
| LogHelper.d(TAG, "OnLoadChildren.SONGS_BY_PLAYLIST playlist=", playlist); |
| if (playlist.equals(MEDIA_ID_NOW_PLAYING) && mPlayingQueue != null |
| && mPlayingQueue.size() > 0) { |
| loadPlayingQueue(mediaItems, parentMediaId); |
| } else { |
| loadSong(mMusicProvider.getMusicsByPlaylist(playlist), mediaItems, |
| parentMediaId); |
| } |
| } else { |
| Log.w(TAG, "Skipping unmatched parentMediaId: " + parentMediaId); |
| } |
| break; |
| } |
| Log.d(TAG, |
| "OnLoadChildren sending " + mediaItems.size() + " results for " |
| + parentMediaId); |
| result.sendResult(mediaItems); |
| } |
| } |
| |
| private void loadPlayingQueue(List<MediaItem> mediaItems, String parentId) { |
| for (MediaSession.QueueItem queueItem : mPlayingQueue) { |
| MediaItem mediaItem = |
| new MediaItem(queueItem.getDescription(), MediaItem.FLAG_PLAYABLE); |
| mediaItems.add(mediaItem); |
| } |
| } |
| |
| private void loadSong( |
| Iterable<MediaMetadata> songList, List<MediaItem> mediaItems, String parentId) { |
| for (MediaMetadata metadata : songList) { |
| String hierarchyAwareMediaID = |
| MediaIDHelper.createMediaID(metadata.getDescription().getMediaId(), parentId); |
| Bundle songExtra = new Bundle(); |
| songExtra.putLong(MediaMetadata.METADATA_KEY_DURATION, |
| metadata.getLong(MediaMetadata.METADATA_KEY_DURATION)); |
| String title = metadata.getString(MediaMetadata.METADATA_KEY_TITLE); |
| String artistName = metadata.getString(MediaMetadata.METADATA_KEY_ARTIST); |
| MediaItem item = new MediaItem(new MediaDescription.Builder() |
| .setMediaId(hierarchyAwareMediaID) |
| .setTitle(title) |
| .setSubtitle(artistName) |
| .setExtras(songExtra) |
| .build(), |
| MediaItem.FLAG_PLAYABLE); |
| mediaItems.add(item); |
| } |
| } |
| |
| private void loadAlbum(Iterable<MediaMetadata> albumList, List<MediaItem> mediaItems) { |
| for (MediaMetadata albumMetadata : albumList) { |
| String albumName = albumMetadata.getString(MediaMetadata.METADATA_KEY_ALBUM); |
| String artistName = albumMetadata.getString(MediaMetadata.METADATA_KEY_ARTIST); |
| Bundle albumExtra = new Bundle(); |
| albumExtra.putLong(MediaMetadata.METADATA_KEY_NUM_TRACKS, |
| albumMetadata.getLong(MediaMetadata.METADATA_KEY_NUM_TRACKS)); |
| MediaItem item = new MediaItem( |
| new MediaDescription.Builder() |
| .setMediaId(MediaIDHelper.createBrowseCategoryMediaID( |
| MEDIA_ID_MUSICS_BY_ALBUM, albumName)) |
| .setTitle(albumName) |
| .setSubtitle(artistName) |
| .setIconBitmap( |
| albumMetadata.getBitmap(MediaMetadata.METADATA_KEY_ALBUM_ART)) |
| .setExtras(albumExtra) |
| .build(), |
| MediaItem.FLAG_BROWSABLE); |
| mediaItems.add(item); |
| } |
| } |
| |
| private final class MediaSessionCallback extends MediaSession.Callback { |
| @Override |
| public void onPlay() { |
| Log.d(TAG, "play"); |
| |
| if (mPlayingQueue == null || mPlayingQueue.isEmpty()) { |
| mPlayingQueue = QueueHelper.getRandomQueue(mMusicProvider); |
| mSession.setQueue(mPlayingQueue); |
| mSession.setQueueTitle(getString(R.string.random_queue_title)); |
| // start playing from the beginning of the queue |
| mCurrentIndexOnQueue = 0; |
| } |
| |
| if (mPlayingQueue != null && !mPlayingQueue.isEmpty()) { |
| handlePlayRequest(); |
| } |
| } |
| |
| @Override |
| public void onSkipToQueueItem(long queueId) { |
| LogHelper.d(TAG, "OnSkipToQueueItem:", queueId); |
| |
| if (mPlayingQueue != null && !mPlayingQueue.isEmpty()) { |
| // set the current index on queue from the music Id: |
| mCurrentIndexOnQueue = QueueHelper.getMusicIndexOnQueue(mPlayingQueue, queueId); |
| // play the music |
| handlePlayRequest(); |
| } |
| } |
| |
| @Override |
| public void onSeekTo(long position) { |
| Log.d(TAG, "onSeekTo:" + position); |
| mPlayback.seekTo((int) position); |
| } |
| |
| @Override |
| public void onPlayFromMediaId(String mediaId, Bundle extras) { |
| LogHelper.d(TAG, "playFromMediaId mediaId:", mediaId, " extras=", extras); |
| |
| // The mediaId used here is not the unique musicId. This one comes from the |
| // MediaBrowser, and is actually a "hierarchy-aware mediaID": a concatenation of |
| // the hierarchy in MediaBrowser and the actual unique musicID. This is necessary |
| // so we can build the correct playing queue, based on where the track was |
| // selected from. |
| mPlayingQueue = QueueHelper.getPlayingQueue(mediaId, mMusicProvider); |
| mSession.setQueue(mPlayingQueue); |
| String queueTitle = getString(R.string.browse_musics_by_genre_subtitle, |
| MediaIDHelper.extractBrowseCategoryValueFromMediaID(mediaId)); |
| mSession.setQueueTitle(queueTitle); |
| |
| if (mPlayingQueue != null && !mPlayingQueue.isEmpty()) { |
| // set the current index on queue from the media Id: |
| mCurrentIndexOnQueue = QueueHelper.getMusicIndexOnQueue(mPlayingQueue, mediaId); |
| |
| if (mCurrentIndexOnQueue < 0) { |
| LogHelper.e(TAG, "playFromMediaId: media ID ", mediaId, |
| " could not be found on queue. Ignoring."); |
| } else { |
| // play the music |
| handlePlayRequest(); |
| } |
| } |
| } |
| |
| @Override |
| public void onPause() { |
| LogHelper.d(TAG, "pause. current state=" + mPlayback.getState()); |
| handlePauseRequest(); |
| } |
| |
| @Override |
| public void onStop() { |
| LogHelper.d(TAG, "stop. current state=" + mPlayback.getState()); |
| handleStopRequest(null); |
| } |
| |
| @Override |
| public void onSkipToNext() { |
| LogHelper.d(TAG, "skipToNext"); |
| mCurrentIndexOnQueue++; |
| if (mPlayingQueue != null && mCurrentIndexOnQueue >= mPlayingQueue.size()) { |
| // This sample's behavior: skipping to next when in last song returns to the |
| // first song. |
| mCurrentIndexOnQueue = 0; |
| } |
| if (QueueHelper.isIndexPlayable(mCurrentIndexOnQueue, mPlayingQueue)) { |
| handlePlayRequest(); |
| } else { |
| LogHelper.e(TAG, |
| "skipToNext: cannot skip to next. next Index=" + mCurrentIndexOnQueue |
| + " queue length=" |
| + (mPlayingQueue == null ? "null" : mPlayingQueue.size())); |
| handleStopRequest("Cannot skip"); |
| } |
| } |
| |
| @Override |
| public void onSkipToPrevious() { |
| LogHelper.d(TAG, "skipToPrevious"); |
| mCurrentIndexOnQueue--; |
| if (mPlayingQueue != null && mCurrentIndexOnQueue < 0) { |
| // This sample's behavior: skipping to previous when in first song restarts the |
| // first song. |
| mCurrentIndexOnQueue = 0; |
| } |
| if (QueueHelper.isIndexPlayable(mCurrentIndexOnQueue, mPlayingQueue)) { |
| handlePlayRequest(); |
| } else { |
| LogHelper.e(TAG, |
| "skipToPrevious: cannot skip to previous. previous Index=" |
| + mCurrentIndexOnQueue + " queue length=" |
| + (mPlayingQueue == null ? "null" : mPlayingQueue.size())); |
| handleStopRequest("Cannot skip"); |
| } |
| } |
| |
| @Override |
| public void onPlayFromSearch(String query, Bundle extras) { |
| LogHelper.d(TAG, "playFromSearch query=", query); |
| |
| if (TextUtils.isEmpty(query)) { |
| // A generic search like "Play music" sends an empty query |
| // and it's expected that we start playing something. What will be played depends |
| // on the app: favorite playlist, "I'm feeling lucky", most recent, etc. |
| mPlayingQueue = QueueHelper.getRandomQueue(mMusicProvider); |
| } else { |
| mPlayingQueue = QueueHelper.getPlayingQueueFromSearch(query, mMusicProvider); |
| } |
| |
| LogHelper.d(TAG, "playFromSearch playqueue.length=" + mPlayingQueue.size()); |
| mSession.setQueue(mPlayingQueue); |
| |
| if (mPlayingQueue != null && !mPlayingQueue.isEmpty()) { |
| // immediately start playing from the beginning of the search results |
| mCurrentIndexOnQueue = 0; |
| |
| handlePlayRequest(); |
| } else { |
| // if nothing was found, we need to warn the user and stop playing |
| handleStopRequest(getString(R.string.no_search_results)); |
| } |
| } |
| |
| @Override |
| public void onCustomAction(String action, Bundle extras) { |
| LogHelper.d(TAG, "onCustomAction action=", action, ", extras=", extras); |
| switch (action) { |
| case CMD_REPEAT: |
| mRepeatMode = RepeatMode.values()[extras.getInt(REPEAT_MODE)]; |
| mExtras.putInt(REPEAT_MODE, mRepeatMode.ordinal()); |
| mSession.setExtras(mExtras); |
| LogHelper.d(TAG, "modified repeatMode=", mRepeatMode); |
| break; |
| default: |
| LogHelper.d(TAG, "Unkown action=", action); |
| break; |
| } |
| } |
| } |
| |
| /** |
| * Handle a request to play music |
| */ |
| private void handlePlayRequest() { |
| LogHelper.d(TAG, "handlePlayRequest: mState=" + mPlayback.getState()); |
| |
| mDelayedStopHandler.removeCallbacksAndMessages(null); |
| if (!mServiceStarted) { |
| LogHelper.v(TAG, "Starting service"); |
| // The MusicService needs to keep running even after the calling MediaBrowser |
| // is disconnected. Call startService(Intent) and then stopSelf(..) when we no longer |
| // need to play media. |
| startService(new Intent(getApplicationContext(), MediaPlaybackService.class)); |
| mServiceStarted = true; |
| } |
| |
| if (!mSession.isActive()) { |
| mSession.setActive(true); |
| } |
| |
| if (QueueHelper.isIndexPlayable(mCurrentIndexOnQueue, mPlayingQueue)) { |
| updateMetadata(); |
| mPlayback.play(mPlayingQueue.get(mCurrentIndexOnQueue)); |
| } |
| } |
| |
| /** |
| * Handle a request to pause music |
| */ |
| private void handlePauseRequest() { |
| LogHelper.d(TAG, "handlePauseRequest: mState=" + mPlayback.getState()); |
| mPlayback.pause(); |
| // reset the delayed stop handler. |
| mDelayedStopHandler.removeCallbacksAndMessages(null); |
| mDelayedStopHandler.sendEmptyMessageDelayed(0, STOP_DELAY); |
| } |
| |
| /** |
| * Handle a request to stop music |
| */ |
| private void handleStopRequest(String withError) { |
| LogHelper.d( |
| TAG, "handleStopRequest: mState=" + mPlayback.getState() + " error=", withError); |
| mPlayback.stop(true); |
| // reset the delayed stop handler. |
| mDelayedStopHandler.removeCallbacksAndMessages(null); |
| mDelayedStopHandler.sendEmptyMessageDelayed(0, STOP_DELAY); |
| |
| updatePlaybackState(withError); |
| |
| // service is no longer necessary. Will be started again if needed. |
| stopSelf(); |
| mServiceStarted = false; |
| } |
| |
| private void updateMetadata() { |
| if (!QueueHelper.isIndexPlayable(mCurrentIndexOnQueue, mPlayingQueue)) { |
| LogHelper.e(TAG, "Can't retrieve current metadata."); |
| updatePlaybackState(getResources().getString(R.string.error_no_metadata)); |
| return; |
| } |
| MediaSession.QueueItem queueItem = mPlayingQueue.get(mCurrentIndexOnQueue); |
| String musicId = |
| MediaIDHelper.extractMusicIDFromMediaID(queueItem.getDescription().getMediaId()); |
| MediaMetadata track = mMusicProvider.getMusicByMediaId(musicId).getMetadata(); |
| final String trackId = track.getString(MediaMetadata.METADATA_KEY_MEDIA_ID); |
| if (!musicId.equals(trackId)) { |
| IllegalStateException e = new IllegalStateException("track ID should match musicId."); |
| LogHelper.e(TAG, "track ID should match musicId.", " musicId=", musicId, |
| " trackId=", trackId, |
| " mediaId from queueItem=", queueItem.getDescription().getMediaId(), |
| " title from queueItem=", queueItem.getDescription().getTitle(), |
| " mediaId from track=", track.getDescription().getMediaId(), |
| " title from track=", track.getDescription().getTitle(), |
| " source.hashcode from track=", |
| track.getString(MusicProvider.CUSTOM_METADATA_TRACK_SOURCE).hashCode(), e); |
| throw e; |
| } |
| LogHelper.d(TAG, "Updating metadata for MusicID= " + musicId); |
| mSession.setMetadata(track); |
| |
| // Set the proper album artwork on the media session, so it can be shown in the |
| // locked screen and in other places. |
| if (track.getDescription().getIconBitmap() == null |
| && track.getDescription().getIconUri() != null) { |
| String albumUri = track.getDescription().getIconUri().toString(); |
| AlbumArtCache.getInstance().fetch(albumUri, new AlbumArtCache.FetchListener() { |
| @Override |
| public void onFetched(String artUrl, Bitmap bitmap, Bitmap icon) { |
| MediaSession.QueueItem queueItem = mPlayingQueue.get(mCurrentIndexOnQueue); |
| MediaMetadata track = mMusicProvider.getMusicByMediaId(trackId).getMetadata(); |
| track = new MediaMetadata |
| .Builder(track) |
| |
| // set high resolution bitmap in METADATA_KEY_ALBUM_ART. This is |
| // used, for |
| // example, on the lockscreen background when the media session |
| // is active. |
| .putBitmap(MediaMetadata.METADATA_KEY_ALBUM_ART, bitmap) |
| |
| // set small version of the album art in the DISPLAY_ICON. This |
| // is used on |
| // the MediaDescription and thus it should be small to be |
| // serialized if |
| // necessary.. |
| .putBitmap(MediaMetadata.METADATA_KEY_DISPLAY_ICON, icon) |
| |
| .build(); |
| |
| mMusicProvider.updateMusic(trackId, track); |
| |
| // If we are still playing the same music |
| String currentPlayingId = MediaIDHelper.extractMusicIDFromMediaID( |
| queueItem.getDescription().getMediaId()); |
| if (trackId.equals(currentPlayingId)) { |
| mSession.setMetadata(track); |
| } |
| } |
| }); |
| } |
| } |
| |
| /** |
| * Update the current media player state, optionally showing an error message. |
| * |
| * @param error if not null, error message to present to the user. |
| */ |
| private void updatePlaybackState(String error) { |
| LogHelper.d(TAG, "updatePlaybackState, playback state=" + mPlayback.getState()); |
| long position = PlaybackState.PLAYBACK_POSITION_UNKNOWN; |
| if (mPlayback != null && mPlayback.isConnected()) { |
| position = mPlayback.getCurrentStreamPosition(); |
| } |
| |
| PlaybackState.Builder stateBuilder = |
| new PlaybackState.Builder().setActions(getAvailableActions()); |
| |
| int state = mPlayback.getState(); |
| |
| // If there is an error message, send it to the playback state: |
| if (error != null) { |
| // Error states are really only supposed to be used for errors that cause playback to |
| // stop unexpectedly and persist until the user takes action to fix it. |
| stateBuilder.setErrorMessage(error); |
| state = PlaybackState.STATE_ERROR; |
| } |
| stateBuilder.setState(state, position, 1.0f, SystemClock.elapsedRealtime()); |
| |
| // Set the activeQueueItemId if the current index is valid. |
| if (QueueHelper.isIndexPlayable(mCurrentIndexOnQueue, mPlayingQueue)) { |
| MediaSession.QueueItem item = mPlayingQueue.get(mCurrentIndexOnQueue); |
| stateBuilder.setActiveQueueItemId(item.getQueueId()); |
| } |
| |
| mSession.setPlaybackState(stateBuilder.build()); |
| |
| if (state == PlaybackState.STATE_PLAYING || state == PlaybackState.STATE_PAUSED) { |
| mMediaNotificationManager.startNotification(); |
| } |
| } |
| |
| private long getAvailableActions() { |
| long actions = PlaybackState.ACTION_PLAY | PlaybackState.ACTION_PLAY_FROM_MEDIA_ID |
| | PlaybackState.ACTION_PLAY_FROM_SEARCH; |
| if (mPlayingQueue == null || mPlayingQueue.isEmpty()) { |
| return actions; |
| } |
| if (mPlayback.isPlaying()) { |
| actions |= PlaybackState.ACTION_PAUSE; |
| } |
| if (mCurrentIndexOnQueue > 0) { |
| actions |= PlaybackState.ACTION_SKIP_TO_PREVIOUS; |
| } |
| if (mCurrentIndexOnQueue < mPlayingQueue.size() - 1) { |
| actions |= PlaybackState.ACTION_SKIP_TO_NEXT; |
| } |
| return actions; |
| } |
| |
| private MediaMetadata getCurrentPlayingMusic() { |
| if (QueueHelper.isIndexPlayable(mCurrentIndexOnQueue, mPlayingQueue)) { |
| MediaSession.QueueItem item = mPlayingQueue.get(mCurrentIndexOnQueue); |
| if (item != null) { |
| LogHelper.d(TAG, |
| "getCurrentPlayingMusic for musicId=", item.getDescription().getMediaId()); |
| return mMusicProvider |
| .getMusicByMediaId(MediaIDHelper.extractMusicIDFromMediaID( |
| item.getDescription().getMediaId())) |
| .getMetadata(); |
| } |
| } |
| return null; |
| } |
| |
| /** |
| * Implementation of the Playback.Callback interface |
| */ |
| @Override |
| public void onCompletion() { |
| // The media player finished playing the current song, so we go ahead |
| // and start the next. |
| if (mPlayingQueue != null && !mPlayingQueue.isEmpty()) { |
| switch (mRepeatMode) { |
| case REPEAT_ALL: |
| // Increase the index |
| mCurrentIndexOnQueue++; |
| // Restart queue when reaching the end |
| if (mCurrentIndexOnQueue >= mPlayingQueue.size()) { |
| mCurrentIndexOnQueue = 0; |
| } |
| break; |
| case REPEAT_CURRENT: |
| // Do not change the index |
| break; |
| case REPEAT_NONE: |
| default: |
| // Increase the index |
| mCurrentIndexOnQueue++; |
| // Stop the queue when reaching the end |
| if (mCurrentIndexOnQueue >= mPlayingQueue.size()) { |
| handleStopRequest(null); |
| return; |
| } |
| break; |
| } |
| handlePlayRequest(); |
| } else { |
| // If there is nothing to play, we stop and release the resources: |
| handleStopRequest(null); |
| } |
| } |
| |
| @Override |
| public void onPlaybackStatusChanged(int state) { |
| updatePlaybackState(null); |
| } |
| |
| @Override |
| public void onError(String error) { |
| updatePlaybackState(error); |
| } |
| |
| /** |
| * A simple handler that stops the service if playback is not active (playing) |
| */ |
| private static class DelayedStopHandler extends Handler { |
| private final WeakReference<MediaPlaybackService> mWeakReference; |
| |
| private DelayedStopHandler(MediaPlaybackService service) { |
| mWeakReference = new WeakReference<>(service); |
| } |
| |
| @Override |
| public void handleMessage(Message msg) { |
| MediaPlaybackService service = mWeakReference.get(); |
| if (service != null && service.mPlayback != null) { |
| if (service.mPlayback.isPlaying()) { |
| Log.d(TAG, "Ignoring delayed stop since the media player is in use."); |
| return; |
| } |
| Log.d(TAG, "Stopping service with delay handler."); |
| service.stopSelf(); |
| service.mServiceStarted = false; |
| } |
| } |
| } |
| } |