| /* |
| * 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.Notification; |
| import android.app.PendingIntent; |
| import android.app.Service; |
| import android.appwidget.AppWidgetManager; |
| import android.content.ComponentName; |
| import android.content.ContentResolver; |
| import android.content.ContentUris; |
| import android.content.ContentValues; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.content.BroadcastReceiver; |
| import android.content.SharedPreferences; |
| import android.content.SharedPreferences.Editor; |
| import android.database.Cursor; |
| import android.database.sqlite.SQLiteException; |
| import android.media.audiofx.AudioEffect; |
| import android.media.AudioManager; |
| import android.media.AudioManager.OnAudioFocusChangeListener; |
| import android.media.MediaPlayer; |
| import android.net.Uri; |
| import android.os.Handler; |
| import android.os.IBinder; |
| import android.os.Message; |
| import android.os.PowerManager; |
| import android.os.SystemClock; |
| import android.os.PowerManager.WakeLock; |
| import android.provider.MediaStore; |
| import android.util.Log; |
| import android.widget.RemoteViews; |
| import android.widget.Toast; |
| |
| import java.io.FileDescriptor; |
| import java.io.IOException; |
| import java.io.PrintWriter; |
| import java.lang.ref.WeakReference; |
| import java.util.Random; |
| import java.util.Vector; |
| |
| /** |
| * Provides "background" audio playback capabilities, allowing the |
| * user to switch between activities without stopping playback. |
| */ |
| public class MediaPlaybackService extends Service { |
| /** used to specify whether enqueue() should start playing |
| * the new list of files right away, next or once all the currently |
| * queued files have been played |
| */ |
| public static final int NOW = 1; |
| public static final int NEXT = 2; |
| public static final int LAST = 3; |
| public static final int PLAYBACKSERVICE_STATUS = 1; |
| |
| public static final int SHUFFLE_NONE = 0; |
| public static final int SHUFFLE_NORMAL = 1; |
| public static final int SHUFFLE_AUTO = 2; |
| |
| public static final int REPEAT_NONE = 0; |
| public static final int REPEAT_CURRENT = 1; |
| public static final int REPEAT_ALL = 2; |
| |
| public static final String PLAYSTATE_CHANGED = "com.android.music.playstatechanged"; |
| public static final String META_CHANGED = "com.android.music.metachanged"; |
| public static final String QUEUE_CHANGED = "com.android.music.queuechanged"; |
| |
| public static final String SERVICECMD = "com.android.music.musicservicecommand"; |
| public static final String CMDNAME = "command"; |
| public static final String CMDTOGGLEPAUSE = "togglepause"; |
| public static final String CMDSTOP = "stop"; |
| public static final String CMDPAUSE = "pause"; |
| public static final String CMDPREVIOUS = "previous"; |
| public static final String CMDNEXT = "next"; |
| |
| public static final String TOGGLEPAUSE_ACTION = "com.android.music.musicservicecommand.togglepause"; |
| public static final String PAUSE_ACTION = "com.android.music.musicservicecommand.pause"; |
| public static final String PREVIOUS_ACTION = "com.android.music.musicservicecommand.previous"; |
| public static final String NEXT_ACTION = "com.android.music.musicservicecommand.next"; |
| |
| private static final int TRACK_ENDED = 1; |
| private static final int RELEASE_WAKELOCK = 2; |
| private static final int SERVER_DIED = 3; |
| private static final int FADEIN = 4; |
| private static final int FOCUSCHANGE = 5; |
| private static final int MAX_HISTORY_SIZE = 100; |
| |
| private MultiPlayer mPlayer; |
| private String mFileToPlay; |
| private int mShuffleMode = SHUFFLE_NONE; |
| private int mRepeatMode = REPEAT_NONE; |
| private int mMediaMountedCount = 0; |
| private long [] mAutoShuffleList = null; |
| private long [] mPlayList = null; |
| private int mPlayListLen = 0; |
| private Vector<Integer> mHistory = new Vector<Integer>(MAX_HISTORY_SIZE); |
| private Cursor mCursor; |
| private int mPlayPos = -1; |
| private static final String LOGTAG = "MediaPlaybackService"; |
| private final Shuffler mRand = new Shuffler(); |
| private int mOpenFailedCounter = 0; |
| String[] mCursorCols = new String[] { |
| "audio._id AS _id", // index must match IDCOLIDX below |
| MediaStore.Audio.Media.ARTIST, |
| MediaStore.Audio.Media.ALBUM, |
| MediaStore.Audio.Media.TITLE, |
| MediaStore.Audio.Media.DATA, |
| MediaStore.Audio.Media.MIME_TYPE, |
| MediaStore.Audio.Media.ALBUM_ID, |
| MediaStore.Audio.Media.ARTIST_ID, |
| MediaStore.Audio.Media.IS_PODCAST, // index must match PODCASTCOLIDX below |
| MediaStore.Audio.Media.BOOKMARK // index must match BOOKMARKCOLIDX below |
| }; |
| private final static int IDCOLIDX = 0; |
| private final static int PODCASTCOLIDX = 8; |
| private final static int BOOKMARKCOLIDX = 9; |
| private BroadcastReceiver mUnmountReceiver = null; |
| private WakeLock mWakeLock; |
| private int mServiceStartId = -1; |
| private boolean mServiceInUse = false; |
| private boolean mIsSupposedToBePlaying = false; |
| private boolean mQuietMode = false; |
| private AudioManager mAudioManager; |
| private boolean mQueueIsSaveable = true; |
| // used to track what type of audio focus loss caused the playback to pause |
| private boolean mPausedByTransientLossOfFocus = false; |
| |
| private SharedPreferences mPreferences; |
| // We use this to distinguish between different cards when saving/restoring playlists. |
| // This will have to change if we want to support multiple simultaneous cards. |
| private int mCardId; |
| |
| private MediaAppWidgetProvider mAppWidgetProvider = MediaAppWidgetProvider.getInstance(); |
| |
| // interval after which we stop the service when idle |
| private static final int IDLE_DELAY = 60000; |
| |
| private Handler mMediaplayerHandler = new Handler() { |
| float mCurrentVolume = 1.0f; |
| @Override |
| public void handleMessage(Message msg) { |
| MusicUtils.debugLog("mMediaplayerHandler.handleMessage " + msg.what); |
| switch (msg.what) { |
| case FADEIN: |
| mCurrentVolume += 0.01f; |
| if (mCurrentVolume < 1.0f) { |
| mMediaplayerHandler.sendEmptyMessageDelayed(FADEIN, 10); |
| } else { |
| mCurrentVolume = 1.0f; |
| } |
| mPlayer.setVolume(mCurrentVolume); |
| break; |
| case SERVER_DIED: |
| if (mIsSupposedToBePlaying) { |
| next(true); |
| } else { |
| // the server died when we were idle, so just |
| // reopen the same song (it will start again |
| // from the beginning though when the user |
| // restarts) |
| openCurrent(); |
| } |
| break; |
| case TRACK_ENDED: |
| if (mRepeatMode == REPEAT_CURRENT) { |
| seek(0); |
| play(); |
| } else { |
| next(false); |
| } |
| break; |
| case RELEASE_WAKELOCK: |
| mWakeLock.release(); |
| break; |
| |
| case FOCUSCHANGE: |
| // This code is here so we can better synchronize it with the code that |
| // handles fade-in |
| // AudioFocus is a new feature: focus updates are made verbose on purpose |
| switch (msg.arg1) { |
| case AudioManager.AUDIOFOCUS_LOSS: |
| Log.v(LOGTAG, "AudioFocus: received AUDIOFOCUS_LOSS"); |
| if(isPlaying()) { |
| mPausedByTransientLossOfFocus = false; |
| } |
| pause(); |
| break; |
| case AudioManager.AUDIOFOCUS_LOSS_TRANSIENT: |
| case AudioManager.AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK: |
| Log.v(LOGTAG, "AudioFocus: received AUDIOFOCUS_LOSS_TRANSIENT"); |
| if(isPlaying()) { |
| mPausedByTransientLossOfFocus = true; |
| } |
| pause(); |
| break; |
| case AudioManager.AUDIOFOCUS_GAIN: |
| Log.v(LOGTAG, "AudioFocus: received AUDIOFOCUS_GAIN"); |
| if(!isPlaying() && mPausedByTransientLossOfFocus) { |
| mPausedByTransientLossOfFocus = false; |
| mCurrentVolume = 0f; |
| mPlayer.setVolume(mCurrentVolume); |
| play(); // also queues a fade-in |
| } |
| break; |
| default: |
| Log.e(LOGTAG, "Unknown audio focus change code"); |
| } |
| break; |
| |
| default: |
| break; |
| } |
| } |
| }; |
| |
| private BroadcastReceiver mIntentReceiver = new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| String action = intent.getAction(); |
| String cmd = intent.getStringExtra("command"); |
| MusicUtils.debugLog("mIntentReceiver.onReceive " + action + " / " + cmd); |
| if (CMDNEXT.equals(cmd) || NEXT_ACTION.equals(action)) { |
| next(true); |
| } else if (CMDPREVIOUS.equals(cmd) || PREVIOUS_ACTION.equals(action)) { |
| prev(); |
| } else if (CMDTOGGLEPAUSE.equals(cmd) || TOGGLEPAUSE_ACTION.equals(action)) { |
| if (isPlaying()) { |
| pause(); |
| mPausedByTransientLossOfFocus = false; |
| } else { |
| play(); |
| } |
| } else if (CMDPAUSE.equals(cmd) || PAUSE_ACTION.equals(action)) { |
| pause(); |
| mPausedByTransientLossOfFocus = false; |
| } else if (CMDSTOP.equals(cmd)) { |
| pause(); |
| mPausedByTransientLossOfFocus = false; |
| seek(0); |
| } else if (MediaAppWidgetProvider.CMDAPPWIDGETUPDATE.equals(cmd)) { |
| // Someone asked us to refresh a set of specific widgets, probably |
| // because they were just added. |
| int[] appWidgetIds = intent.getIntArrayExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS); |
| mAppWidgetProvider.performUpdate(MediaPlaybackService.this, appWidgetIds); |
| } |
| } |
| }; |
| |
| private OnAudioFocusChangeListener mAudioFocusListener = new OnAudioFocusChangeListener() { |
| public void onAudioFocusChange(int focusChange) { |
| mMediaplayerHandler.obtainMessage(FOCUSCHANGE, focusChange, 0).sendToTarget(); |
| } |
| }; |
| |
| public MediaPlaybackService() { |
| } |
| |
| @Override |
| public void onCreate() { |
| super.onCreate(); |
| |
| mAudioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE); |
| mAudioManager.registerMediaButtonEventReceiver(new ComponentName(getPackageName(), |
| MediaButtonIntentReceiver.class.getName())); |
| |
| mPreferences = getSharedPreferences("Music", MODE_WORLD_READABLE | MODE_WORLD_WRITEABLE); |
| mCardId = MusicUtils.getCardId(this); |
| |
| registerExternalStorageListener(); |
| |
| // Needs to be done in this thread, since otherwise ApplicationContext.getPowerManager() crashes. |
| mPlayer = new MultiPlayer(); |
| mPlayer.setHandler(mMediaplayerHandler); |
| |
| reloadQueue(); |
| |
| IntentFilter commandFilter = new IntentFilter(); |
| commandFilter.addAction(SERVICECMD); |
| commandFilter.addAction(TOGGLEPAUSE_ACTION); |
| commandFilter.addAction(PAUSE_ACTION); |
| commandFilter.addAction(NEXT_ACTION); |
| commandFilter.addAction(PREVIOUS_ACTION); |
| registerReceiver(mIntentReceiver, commandFilter); |
| |
| PowerManager pm = (PowerManager)getSystemService(Context.POWER_SERVICE); |
| mWakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, this.getClass().getName()); |
| mWakeLock.setReferenceCounted(false); |
| |
| // If the service was idle, but got killed before it stopped itself, the |
| // system will relaunch it. Make sure it gets stopped again in that case. |
| Message msg = mDelayedStopHandler.obtainMessage(); |
| mDelayedStopHandler.sendMessageDelayed(msg, IDLE_DELAY); |
| } |
| |
| @Override |
| public void onDestroy() { |
| // Check that we're not being destroyed while something is still playing. |
| if (isPlaying()) { |
| Log.e(LOGTAG, "Service being destroyed while still playing."); |
| } |
| // release all MediaPlayer resources, including the native player and wakelocks |
| Intent i = new Intent(AudioEffect.ACTION_CLOSE_AUDIO_EFFECT_CONTROL_SESSION); |
| i.putExtra(AudioEffect.EXTRA_AUDIO_SESSION, getAudioSessionId()); |
| i.putExtra(AudioEffect.EXTRA_PACKAGE_NAME, getPackageName()); |
| sendBroadcast(i); |
| mPlayer.release(); |
| mPlayer = null; |
| |
| mAudioManager.abandonAudioFocus(mAudioFocusListener); |
| |
| // make sure there aren't any other messages coming |
| mDelayedStopHandler.removeCallbacksAndMessages(null); |
| mMediaplayerHandler.removeCallbacksAndMessages(null); |
| |
| if (mCursor != null) { |
| mCursor.close(); |
| mCursor = null; |
| } |
| |
| unregisterReceiver(mIntentReceiver); |
| if (mUnmountReceiver != null) { |
| unregisterReceiver(mUnmountReceiver); |
| mUnmountReceiver = null; |
| } |
| mWakeLock.release(); |
| super.onDestroy(); |
| } |
| |
| private final char hexdigits [] = new char [] { |
| '0', '1', '2', '3', |
| '4', '5', '6', '7', |
| '8', '9', 'a', 'b', |
| 'c', 'd', 'e', 'f' |
| }; |
| |
| private void saveQueue(boolean full) { |
| if (!mQueueIsSaveable) { |
| return; |
| } |
| |
| Editor ed = mPreferences.edit(); |
| //long start = System.currentTimeMillis(); |
| if (full) { |
| StringBuilder q = new StringBuilder(); |
| |
| // The current playlist is saved as a list of "reverse hexadecimal" |
| // numbers, which we can generate faster than normal decimal or |
| // hexadecimal numbers, which in turn allows us to save the playlist |
| // more often without worrying too much about performance. |
| // (saving the full state takes about 40 ms under no-load conditions |
| // on the phone) |
| int len = mPlayListLen; |
| for (int i = 0; i < len; i++) { |
| long n = mPlayList[i]; |
| if (n < 0) { |
| continue; |
| } else if (n == 0) { |
| q.append("0;"); |
| } else { |
| while (n != 0) { |
| int digit = (int)(n & 0xf); |
| n >>>= 4; |
| q.append(hexdigits[digit]); |
| } |
| q.append(";"); |
| } |
| } |
| //Log.i("@@@@ service", "created queue string in " + (System.currentTimeMillis() - start) + " ms"); |
| ed.putString("queue", q.toString()); |
| ed.putInt("cardid", mCardId); |
| if (mShuffleMode != SHUFFLE_NONE) { |
| // In shuffle mode we need to save the history too |
| len = mHistory.size(); |
| q.setLength(0); |
| for (int i = 0; i < len; i++) { |
| int n = mHistory.get(i); |
| if (n == 0) { |
| q.append("0;"); |
| } else { |
| while (n != 0) { |
| int digit = (n & 0xf); |
| n >>>= 4; |
| q.append(hexdigits[digit]); |
| } |
| q.append(";"); |
| } |
| } |
| ed.putString("history", q.toString()); |
| } |
| } |
| ed.putInt("curpos", mPlayPos); |
| if (mPlayer.isInitialized()) { |
| ed.putLong("seekpos", mPlayer.position()); |
| } |
| ed.putInt("repeatmode", mRepeatMode); |
| ed.putInt("shufflemode", mShuffleMode); |
| SharedPreferencesCompat.apply(ed); |
| |
| //Log.i("@@@@ service", "saved state in " + (System.currentTimeMillis() - start) + " ms"); |
| } |
| |
| private void reloadQueue() { |
| String q = null; |
| |
| boolean newstyle = false; |
| int id = mCardId; |
| if (mPreferences.contains("cardid")) { |
| newstyle = true; |
| id = mPreferences.getInt("cardid", ~mCardId); |
| } |
| if (id == mCardId) { |
| // Only restore the saved playlist if the card is still |
| // the same one as when the playlist was saved |
| q = mPreferences.getString("queue", ""); |
| } |
| int qlen = q != null ? q.length() : 0; |
| if (qlen > 1) { |
| //Log.i("@@@@ service", "loaded queue: " + q); |
| int plen = 0; |
| int n = 0; |
| int shift = 0; |
| for (int i = 0; i < qlen; i++) { |
| char c = q.charAt(i); |
| if (c == ';') { |
| ensurePlayListCapacity(plen + 1); |
| mPlayList[plen] = n; |
| plen++; |
| n = 0; |
| shift = 0; |
| } else { |
| if (c >= '0' && c <= '9') { |
| n += ((c - '0') << shift); |
| } else if (c >= 'a' && c <= 'f') { |
| n += ((10 + c - 'a') << shift); |
| } else { |
| // bogus playlist data |
| plen = 0; |
| break; |
| } |
| shift += 4; |
| } |
| } |
| mPlayListLen = plen; |
| |
| int pos = mPreferences.getInt("curpos", 0); |
| if (pos < 0 || pos >= mPlayListLen) { |
| // The saved playlist is bogus, discard it |
| mPlayListLen = 0; |
| return; |
| } |
| mPlayPos = pos; |
| |
| // When reloadQueue is called in response to a card-insertion, |
| // we might not be able to query the media provider right away. |
| // To deal with this, try querying for the current file, and if |
| // that fails, wait a while and try again. If that too fails, |
| // assume there is a problem and don't restore the state. |
| Cursor crsr = MusicUtils.query(this, |
| MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, |
| new String [] {"_id"}, "_id=" + mPlayList[mPlayPos] , null, null); |
| if (crsr == null || crsr.getCount() == 0) { |
| // wait a bit and try again |
| SystemClock.sleep(3000); |
| crsr = getContentResolver().query( |
| MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, |
| mCursorCols, "_id=" + mPlayList[mPlayPos] , null, null); |
| } |
| if (crsr != null) { |
| crsr.close(); |
| } |
| |
| // Make sure we don't auto-skip to the next song, since that |
| // also starts playback. What could happen in that case is: |
| // - music is paused |
| // - go to UMS and delete some files, including the currently playing one |
| // - come back from UMS |
| // (time passes) |
| // - music app is killed for some reason (out of memory) |
| // - music service is restarted, service restores state, doesn't find |
| // the "current" file, goes to the next and: playback starts on its |
| // own, potentially at some random inconvenient time. |
| mOpenFailedCounter = 20; |
| mQuietMode = true; |
| openCurrent(); |
| mQuietMode = false; |
| if (!mPlayer.isInitialized()) { |
| // couldn't restore the saved state |
| mPlayListLen = 0; |
| return; |
| } |
| |
| long seekpos = mPreferences.getLong("seekpos", 0); |
| seek(seekpos >= 0 && seekpos < duration() ? seekpos : 0); |
| Log.d(LOGTAG, "restored queue, currently at position " |
| + position() + "/" + duration() |
| + " (requested " + seekpos + ")"); |
| |
| int repmode = mPreferences.getInt("repeatmode", REPEAT_NONE); |
| if (repmode != REPEAT_ALL && repmode != REPEAT_CURRENT) { |
| repmode = REPEAT_NONE; |
| } |
| mRepeatMode = repmode; |
| |
| int shufmode = mPreferences.getInt("shufflemode", SHUFFLE_NONE); |
| if (shufmode != SHUFFLE_AUTO && shufmode != SHUFFLE_NORMAL) { |
| shufmode = SHUFFLE_NONE; |
| } |
| if (shufmode != SHUFFLE_NONE) { |
| // in shuffle mode we need to restore the history too |
| q = mPreferences.getString("history", ""); |
| qlen = q != null ? q.length() : 0; |
| if (qlen > 1) { |
| plen = 0; |
| n = 0; |
| shift = 0; |
| mHistory.clear(); |
| for (int i = 0; i < qlen; i++) { |
| char c = q.charAt(i); |
| if (c == ';') { |
| if (n >= mPlayListLen) { |
| // bogus history data |
| mHistory.clear(); |
| break; |
| } |
| mHistory.add(n); |
| n = 0; |
| shift = 0; |
| } else { |
| if (c >= '0' && c <= '9') { |
| n += ((c - '0') << shift); |
| } else if (c >= 'a' && c <= 'f') { |
| n += ((10 + c - 'a') << shift); |
| } else { |
| // bogus history data |
| mHistory.clear(); |
| break; |
| } |
| shift += 4; |
| } |
| } |
| } |
| } |
| if (shufmode == SHUFFLE_AUTO) { |
| if (! makeAutoShuffleList()) { |
| shufmode = SHUFFLE_NONE; |
| } |
| } |
| mShuffleMode = shufmode; |
| } |
| } |
| |
| @Override |
| public IBinder onBind(Intent intent) { |
| mDelayedStopHandler.removeCallbacksAndMessages(null); |
| mServiceInUse = true; |
| return mBinder; |
| } |
| |
| @Override |
| public void onRebind(Intent intent) { |
| mDelayedStopHandler.removeCallbacksAndMessages(null); |
| mServiceInUse = true; |
| } |
| |
| @Override |
| public int onStartCommand(Intent intent, int flags, int startId) { |
| mServiceStartId = startId; |
| mDelayedStopHandler.removeCallbacksAndMessages(null); |
| |
| if (intent != null) { |
| String action = intent.getAction(); |
| String cmd = intent.getStringExtra("command"); |
| MusicUtils.debugLog("onStartCommand " + action + " / " + cmd); |
| |
| if (CMDNEXT.equals(cmd) || NEXT_ACTION.equals(action)) { |
| next(true); |
| } else if (CMDPREVIOUS.equals(cmd) || PREVIOUS_ACTION.equals(action)) { |
| if (position() < 2000) { |
| prev(); |
| } else { |
| seek(0); |
| play(); |
| } |
| } else if (CMDTOGGLEPAUSE.equals(cmd) || TOGGLEPAUSE_ACTION.equals(action)) { |
| if (isPlaying()) { |
| pause(); |
| mPausedByTransientLossOfFocus = false; |
| } else { |
| play(); |
| } |
| } else if (CMDPAUSE.equals(cmd) || PAUSE_ACTION.equals(action)) { |
| pause(); |
| mPausedByTransientLossOfFocus = false; |
| } else if (CMDSTOP.equals(cmd)) { |
| pause(); |
| mPausedByTransientLossOfFocus = false; |
| seek(0); |
| } |
| } |
| |
| // make sure the service will shut down on its own if it was |
| // just started but not bound to and nothing is playing |
| mDelayedStopHandler.removeCallbacksAndMessages(null); |
| Message msg = mDelayedStopHandler.obtainMessage(); |
| mDelayedStopHandler.sendMessageDelayed(msg, IDLE_DELAY); |
| return START_STICKY; |
| } |
| |
| @Override |
| public boolean onUnbind(Intent intent) { |
| mServiceInUse = false; |
| |
| // Take a snapshot of the current playlist |
| saveQueue(true); |
| |
| if (isPlaying() || mPausedByTransientLossOfFocus) { |
| // something is currently playing, or will be playing once |
| // an in-progress action requesting audio focus ends, so don't stop the service now. |
| return true; |
| } |
| |
| // If there is a playlist but playback is paused, then wait a while |
| // before stopping the service, so that pause/resume isn't slow. |
| // Also delay stopping the service if we're transitioning between tracks. |
| if (mPlayListLen > 0 || mMediaplayerHandler.hasMessages(TRACK_ENDED)) { |
| Message msg = mDelayedStopHandler.obtainMessage(); |
| mDelayedStopHandler.sendMessageDelayed(msg, IDLE_DELAY); |
| return true; |
| } |
| |
| // No active playlist, OK to stop the service right now |
| stopSelf(mServiceStartId); |
| return true; |
| } |
| |
| private Handler mDelayedStopHandler = new Handler() { |
| @Override |
| public void handleMessage(Message msg) { |
| // Check again to make sure nothing is playing right now |
| if (isPlaying() || mPausedByTransientLossOfFocus || mServiceInUse |
| || mMediaplayerHandler.hasMessages(TRACK_ENDED)) { |
| return; |
| } |
| // save the queue again, because it might have changed |
| // since the user exited the music app (because of |
| // party-shuffle or because the play-position changed) |
| saveQueue(true); |
| stopSelf(mServiceStartId); |
| } |
| }; |
| |
| /** |
| * Called when we receive a ACTION_MEDIA_EJECT notification. |
| * |
| * @param storagePath path to mount point for the removed media |
| */ |
| public void closeExternalStorageFiles(String storagePath) { |
| // stop playback and clean up if the SD card is going to be unmounted. |
| stop(true); |
| notifyChange(QUEUE_CHANGED); |
| notifyChange(META_CHANGED); |
| } |
| |
| /** |
| * Registers an intent to listen for ACTION_MEDIA_EJECT notifications. |
| * The intent will call closeExternalStorageFiles() if the external media |
| * is going to be ejected, so applications can clean up any files they have open. |
| */ |
| public void registerExternalStorageListener() { |
| if (mUnmountReceiver == null) { |
| mUnmountReceiver = new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| String action = intent.getAction(); |
| if (action.equals(Intent.ACTION_MEDIA_EJECT)) { |
| saveQueue(true); |
| mQueueIsSaveable = false; |
| closeExternalStorageFiles(intent.getData().getPath()); |
| } else if (action.equals(Intent.ACTION_MEDIA_MOUNTED)) { |
| mMediaMountedCount++; |
| mCardId = MusicUtils.getCardId(MediaPlaybackService.this); |
| reloadQueue(); |
| mQueueIsSaveable = true; |
| notifyChange(QUEUE_CHANGED); |
| notifyChange(META_CHANGED); |
| } |
| } |
| }; |
| IntentFilter iFilter = new IntentFilter(); |
| iFilter.addAction(Intent.ACTION_MEDIA_EJECT); |
| iFilter.addAction(Intent.ACTION_MEDIA_MOUNTED); |
| iFilter.addDataScheme("file"); |
| registerReceiver(mUnmountReceiver, iFilter); |
| } |
| } |
| |
| /** |
| * Notify the change-receivers that something has changed. |
| * The intent that is sent contains the following data |
| * for the currently playing track: |
| * "id" - Integer: the database row ID |
| * "artist" - String: the name of the artist |
| * "album" - String: the name of the album |
| * "track" - String: the name of the track |
| * The intent has an action that is one of |
| * "com.android.music.metachanged" |
| * "com.android.music.queuechanged", |
| * "com.android.music.playbackcomplete" |
| * "com.android.music.playstatechanged" |
| * respectively indicating that a new track has |
| * started playing, that the playback queue has |
| * changed, that playback has stopped because |
| * the last file in the list has been played, |
| * or that the play-state changed (paused/resumed). |
| */ |
| private void notifyChange(String what) { |
| |
| Intent i = new Intent(what); |
| i.putExtra("id", Long.valueOf(getAudioId())); |
| i.putExtra("artist", getArtistName()); |
| i.putExtra("album",getAlbumName()); |
| i.putExtra("track", getTrackName()); |
| i.putExtra("playing", isPlaying()); |
| sendStickyBroadcast(i); |
| |
| if (what.equals(QUEUE_CHANGED)) { |
| saveQueue(true); |
| } else { |
| saveQueue(false); |
| } |
| |
| // Share this notification directly with our widgets |
| mAppWidgetProvider.notifyChange(this, what); |
| } |
| |
| private void ensurePlayListCapacity(int size) { |
| if (mPlayList == null || size > mPlayList.length) { |
| // reallocate at 2x requested size so we don't |
| // need to grow and copy the array for every |
| // insert |
| long [] newlist = new long[size * 2]; |
| int len = mPlayList != null ? mPlayList.length : mPlayListLen; |
| for (int i = 0; i < len; i++) { |
| newlist[i] = mPlayList[i]; |
| } |
| mPlayList = newlist; |
| } |
| // FIXME: shrink the array when the needed size is much smaller |
| // than the allocated size |
| } |
| |
| // insert the list of songs at the specified position in the playlist |
| private void addToPlayList(long [] list, int position) { |
| int addlen = list.length; |
| if (position < 0) { // overwrite |
| mPlayListLen = 0; |
| position = 0; |
| } |
| ensurePlayListCapacity(mPlayListLen + addlen); |
| if (position > mPlayListLen) { |
| position = mPlayListLen; |
| } |
| |
| // move part of list after insertion point |
| int tailsize = mPlayListLen - position; |
| for (int i = tailsize ; i > 0 ; i--) { |
| mPlayList[position + i] = mPlayList[position + i - addlen]; |
| } |
| |
| // copy list into playlist |
| for (int i = 0; i < addlen; i++) { |
| mPlayList[position + i] = list[i]; |
| } |
| mPlayListLen += addlen; |
| if (mPlayListLen == 0) { |
| mCursor.close(); |
| mCursor = null; |
| notifyChange(META_CHANGED); |
| } |
| } |
| |
| /** |
| * Appends a list of tracks to the current playlist. |
| * If nothing is playing currently, playback will be started at |
| * the first track. |
| * If the action is NOW, playback will switch to the first of |
| * the new tracks immediately. |
| * @param list The list of tracks to append. |
| * @param action NOW, NEXT or LAST |
| */ |
| public void enqueue(long [] list, int action) { |
| synchronized(this) { |
| if (action == NEXT && mPlayPos + 1 < mPlayListLen) { |
| addToPlayList(list, mPlayPos + 1); |
| notifyChange(QUEUE_CHANGED); |
| } else { |
| // action == LAST || action == NOW || mPlayPos + 1 == mPlayListLen |
| addToPlayList(list, Integer.MAX_VALUE); |
| notifyChange(QUEUE_CHANGED); |
| if (action == NOW) { |
| mPlayPos = mPlayListLen - list.length; |
| openCurrent(); |
| play(); |
| notifyChange(META_CHANGED); |
| return; |
| } |
| } |
| if (mPlayPos < 0) { |
| mPlayPos = 0; |
| openCurrent(); |
| play(); |
| notifyChange(META_CHANGED); |
| } |
| } |
| } |
| |
| /** |
| * Replaces the current playlist with a new list, |
| * and prepares for starting playback at the specified |
| * position in the list, or a random position if the |
| * specified position is 0. |
| * @param list The new list of tracks. |
| */ |
| public void open(long [] list, int position) { |
| synchronized (this) { |
| if (mShuffleMode == SHUFFLE_AUTO) { |
| mShuffleMode = SHUFFLE_NORMAL; |
| } |
| long oldId = getAudioId(); |
| int listlength = list.length; |
| boolean newlist = true; |
| if (mPlayListLen == listlength) { |
| // possible fast path: list might be the same |
| newlist = false; |
| for (int i = 0; i < listlength; i++) { |
| if (list[i] != mPlayList[i]) { |
| newlist = true; |
| break; |
| } |
| } |
| } |
| if (newlist) { |
| addToPlayList(list, -1); |
| notifyChange(QUEUE_CHANGED); |
| } |
| int oldpos = mPlayPos; |
| if (position >= 0) { |
| mPlayPos = position; |
| } else { |
| mPlayPos = mRand.nextInt(mPlayListLen); |
| } |
| mHistory.clear(); |
| |
| saveBookmarkIfNeeded(); |
| openCurrent(); |
| if (oldId != getAudioId()) { |
| notifyChange(META_CHANGED); |
| } |
| } |
| } |
| |
| /** |
| * Moves the item at index1 to index2. |
| * @param index1 |
| * @param index2 |
| */ |
| public void moveQueueItem(int index1, int index2) { |
| synchronized (this) { |
| if (index1 >= mPlayListLen) { |
| index1 = mPlayListLen - 1; |
| } |
| if (index2 >= mPlayListLen) { |
| index2 = mPlayListLen - 1; |
| } |
| if (index1 < index2) { |
| long tmp = mPlayList[index1]; |
| for (int i = index1; i < index2; i++) { |
| mPlayList[i] = mPlayList[i+1]; |
| } |
| mPlayList[index2] = tmp; |
| if (mPlayPos == index1) { |
| mPlayPos = index2; |
| } else if (mPlayPos >= index1 && mPlayPos <= index2) { |
| mPlayPos--; |
| } |
| } else if (index2 < index1) { |
| long tmp = mPlayList[index1]; |
| for (int i = index1; i > index2; i--) { |
| mPlayList[i] = mPlayList[i-1]; |
| } |
| mPlayList[index2] = tmp; |
| if (mPlayPos == index1) { |
| mPlayPos = index2; |
| } else if (mPlayPos >= index2 && mPlayPos <= index1) { |
| mPlayPos++; |
| } |
| } |
| notifyChange(QUEUE_CHANGED); |
| } |
| } |
| |
| /** |
| * Returns the current play list |
| * @return An array of integers containing the IDs of the tracks in the play list |
| */ |
| public long [] getQueue() { |
| synchronized (this) { |
| int len = mPlayListLen; |
| long [] list = new long[len]; |
| for (int i = 0; i < len; i++) { |
| list[i] = mPlayList[i]; |
| } |
| return list; |
| } |
| } |
| |
| private void openCurrent() { |
| synchronized (this) { |
| if (mCursor != null) { |
| mCursor.close(); |
| mCursor = null; |
| } |
| |
| if (mPlayListLen == 0) { |
| return; |
| } |
| stop(false); |
| |
| String id = String.valueOf(mPlayList[mPlayPos]); |
| |
| mCursor = getContentResolver().query( |
| MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, |
| mCursorCols, "_id=" + id , null, null); |
| if (mCursor != null) { |
| mCursor.moveToFirst(); |
| open(MediaStore.Audio.Media.EXTERNAL_CONTENT_URI + "/" + id); |
| // go to bookmark if needed |
| if (isPodcast()) { |
| long bookmark = getBookmark(); |
| // Start playing a little bit before the bookmark, |
| // so it's easier to get back in to the narrative. |
| seek(bookmark - 5000); |
| } |
| } |
| } |
| } |
| |
| /** |
| * Opens the specified file and readies it for playback. |
| * |
| * @param path The full path of the file to be opened. |
| */ |
| public void open(String path) { |
| synchronized (this) { |
| if (path == null) { |
| return; |
| } |
| |
| // if mCursor is null, try to associate path with a database cursor |
| if (mCursor == null) { |
| |
| ContentResolver resolver = getContentResolver(); |
| Uri uri; |
| String where; |
| String selectionArgs[]; |
| if (path.startsWith("content://media/")) { |
| uri = Uri.parse(path); |
| where = null; |
| selectionArgs = null; |
| } else { |
| uri = MediaStore.Audio.Media.getContentUriForPath(path); |
| where = MediaStore.Audio.Media.DATA + "=?"; |
| selectionArgs = new String[] { path }; |
| } |
| |
| try { |
| mCursor = resolver.query(uri, mCursorCols, where, selectionArgs, null); |
| if (mCursor != null) { |
| if (mCursor.getCount() == 0) { |
| mCursor.close(); |
| mCursor = null; |
| } else { |
| mCursor.moveToNext(); |
| ensurePlayListCapacity(1); |
| mPlayListLen = 1; |
| mPlayList[0] = mCursor.getLong(IDCOLIDX); |
| mPlayPos = 0; |
| } |
| } |
| } catch (UnsupportedOperationException ex) { |
| } |
| } |
| mFileToPlay = path; |
| mPlayer.setDataSource(mFileToPlay); |
| if (! mPlayer.isInitialized()) { |
| stop(true); |
| if (mOpenFailedCounter++ < 10 && mPlayListLen > 1) { |
| // beware: this ends up being recursive because next() calls open() again. |
| next(false); |
| } |
| if (! mPlayer.isInitialized() && mOpenFailedCounter != 0) { |
| // need to make sure we only shows this once |
| mOpenFailedCounter = 0; |
| if (!mQuietMode) { |
| Toast.makeText(this, R.string.playback_failed, Toast.LENGTH_SHORT).show(); |
| } |
| Log.d(LOGTAG, "Failed to open file for playback"); |
| } |
| } else { |
| mOpenFailedCounter = 0; |
| } |
| } |
| } |
| |
| /** |
| * Starts playback of a previously opened file. |
| */ |
| public void play() { |
| mAudioManager.requestAudioFocus(mAudioFocusListener, AudioManager.STREAM_MUSIC, |
| AudioManager.AUDIOFOCUS_GAIN); |
| mAudioManager.registerMediaButtonEventReceiver(new ComponentName(this.getPackageName(), |
| MediaButtonIntentReceiver.class.getName())); |
| |
| if (mPlayer.isInitialized()) { |
| // if we are at the end of the song, go to the next song first |
| long duration = mPlayer.duration(); |
| if (mRepeatMode != REPEAT_CURRENT && duration > 2000 && |
| mPlayer.position() >= duration - 2000) { |
| next(true); |
| } |
| |
| mPlayer.start(); |
| // make sure we fade in, in case a previous fadein was stopped because |
| // of another focus loss |
| mMediaplayerHandler.sendEmptyMessage(FADEIN); |
| |
| RemoteViews views = new RemoteViews(getPackageName(), R.layout.statusbar); |
| views.setImageViewResource(R.id.icon, R.drawable.stat_notify_musicplayer); |
| if (getAudioId() < 0) { |
| // streaming |
| views.setTextViewText(R.id.trackname, getPath()); |
| views.setTextViewText(R.id.artistalbum, null); |
| } else { |
| String artist = getArtistName(); |
| views.setTextViewText(R.id.trackname, getTrackName()); |
| if (artist == null || artist.equals(MediaStore.UNKNOWN_STRING)) { |
| artist = getString(R.string.unknown_artist_name); |
| } |
| String album = getAlbumName(); |
| if (album == null || album.equals(MediaStore.UNKNOWN_STRING)) { |
| album = getString(R.string.unknown_album_name); |
| } |
| |
| views.setTextViewText(R.id.artistalbum, |
| getString(R.string.notification_artist_album, artist, album) |
| ); |
| } |
| |
| Notification status = new Notification(); |
| status.contentView = views; |
| status.flags |= Notification.FLAG_ONGOING_EVENT; |
| status.icon = R.drawable.stat_notify_musicplayer; |
| status.contentIntent = PendingIntent.getActivity(this, 0, |
| new Intent("com.android.music.PLAYBACK_VIEWER") |
| .addFlags(Intent.FLAG_ACTIVITY_NEW_TASK), 0); |
| startForeground(PLAYBACKSERVICE_STATUS, status); |
| if (!mIsSupposedToBePlaying) { |
| mIsSupposedToBePlaying = true; |
| notifyChange(PLAYSTATE_CHANGED); |
| } |
| |
| } else if (mPlayListLen <= 0) { |
| // This is mostly so that if you press 'play' on a bluetooth headset |
| // without every having played anything before, it will still play |
| // something. |
| setShuffleMode(SHUFFLE_AUTO); |
| } |
| } |
| |
| private void stop(boolean remove_status_icon) { |
| if (mPlayer.isInitialized()) { |
| mPlayer.stop(); |
| } |
| mFileToPlay = null; |
| if (mCursor != null) { |
| mCursor.close(); |
| mCursor = null; |
| } |
| if (remove_status_icon) { |
| gotoIdleState(); |
| } else { |
| stopForeground(false); |
| } |
| if (remove_status_icon) { |
| mIsSupposedToBePlaying = false; |
| } |
| } |
| |
| /** |
| * Stops playback. |
| */ |
| public void stop() { |
| stop(true); |
| } |
| |
| /** |
| * Pauses playback (call play() to resume) |
| */ |
| public void pause() { |
| synchronized(this) { |
| mMediaplayerHandler.removeMessages(FADEIN); |
| if (isPlaying()) { |
| mPlayer.pause(); |
| gotoIdleState(); |
| mIsSupposedToBePlaying = false; |
| notifyChange(PLAYSTATE_CHANGED); |
| saveBookmarkIfNeeded(); |
| } |
| } |
| } |
| |
| /** Returns whether something is currently playing |
| * |
| * @return true if something is playing (or will be playing shortly, in case |
| * we're currently transitioning between tracks), false if not. |
| */ |
| public boolean isPlaying() { |
| return mIsSupposedToBePlaying; |
| } |
| |
| /* |
| Desired behavior for prev/next/shuffle: |
| |
| - NEXT will move to the next track in the list when not shuffling, and to |
| a track randomly picked from the not-yet-played tracks when shuffling. |
| If all tracks have already been played, pick from the full set, but |
| avoid picking the previously played track if possible. |
| - when shuffling, PREV will go to the previously played track. Hitting PREV |
| again will go to the track played before that, etc. When the start of the |
| history has been reached, PREV is a no-op. |
| When not shuffling, PREV will go to the sequentially previous track (the |
| difference with the shuffle-case is mainly that when not shuffling, the |
| user can back up to tracks that are not in the history). |
| |
| Example: |
| When playing an album with 10 tracks from the start, and enabling shuffle |
| while playing track 5, the remaining tracks (6-10) will be shuffled, e.g. |
| the final play order might be 1-2-3-4-5-8-10-6-9-7. |
| When hitting 'prev' 8 times while playing track 7 in this example, the |
| user will go to tracks 9-6-10-8-5-4-3-2. If the user then hits 'next', |
| a random track will be picked again. If at any time user disables shuffling |
| the next/previous track will be picked in sequential order again. |
| */ |
| |
| public void prev() { |
| synchronized (this) { |
| if (mShuffleMode == SHUFFLE_NORMAL) { |
| // go to previously-played track and remove it from the history |
| int histsize = mHistory.size(); |
| if (histsize == 0) { |
| // prev is a no-op |
| return; |
| } |
| Integer pos = mHistory.remove(histsize - 1); |
| mPlayPos = pos.intValue(); |
| } else { |
| if (mPlayPos > 0) { |
| mPlayPos--; |
| } else { |
| mPlayPos = mPlayListLen - 1; |
| } |
| } |
| saveBookmarkIfNeeded(); |
| stop(false); |
| openCurrent(); |
| play(); |
| notifyChange(META_CHANGED); |
| } |
| } |
| |
| public void next(boolean force) { |
| synchronized (this) { |
| if (mPlayListLen <= 0) { |
| Log.d(LOGTAG, "No play queue"); |
| return; |
| } |
| |
| if (mShuffleMode == SHUFFLE_NORMAL) { |
| // Pick random next track from the not-yet-played ones |
| // TODO: make it work right after adding/removing items in the queue. |
| |
| // Store the current file in the history, but keep the history at a |
| // reasonable size |
| if (mPlayPos >= 0) { |
| mHistory.add(mPlayPos); |
| } |
| if (mHistory.size() > MAX_HISTORY_SIZE) { |
| mHistory.removeElementAt(0); |
| } |
| |
| int numTracks = mPlayListLen; |
| int[] tracks = new int[numTracks]; |
| for (int i=0;i < numTracks; i++) { |
| tracks[i] = i; |
| } |
| |
| int numHistory = mHistory.size(); |
| int numUnplayed = numTracks; |
| for (int i=0;i < numHistory; i++) { |
| int idx = mHistory.get(i).intValue(); |
| if (idx < numTracks && tracks[idx] >= 0) { |
| numUnplayed--; |
| tracks[idx] = -1; |
| } |
| } |
| |
| // 'numUnplayed' now indicates how many tracks have not yet |
| // been played, and 'tracks' contains the indices of those |
| // tracks. |
| if (numUnplayed <=0) { |
| // everything's already been played |
| if (mRepeatMode == REPEAT_ALL || force) { |
| //pick from full set |
| numUnplayed = numTracks; |
| for (int i=0;i < numTracks; i++) { |
| tracks[i] = i; |
| } |
| } else { |
| // all done |
| gotoIdleState(); |
| if (mIsSupposedToBePlaying) { |
| mIsSupposedToBePlaying = false; |
| notifyChange(PLAYSTATE_CHANGED); |
| } |
| return; |
| } |
| } |
| int skip = mRand.nextInt(numUnplayed); |
| int cnt = -1; |
| while (true) { |
| while (tracks[++cnt] < 0) |
| ; |
| skip--; |
| if (skip < 0) { |
| break; |
| } |
| } |
| mPlayPos = cnt; |
| } else if (mShuffleMode == SHUFFLE_AUTO) { |
| doAutoShuffleUpdate(); |
| mPlayPos++; |
| } else { |
| if (mPlayPos >= mPlayListLen - 1) { |
| // we're at the end of the list |
| if (mRepeatMode == REPEAT_NONE && !force) { |
| // all done |
| gotoIdleState(); |
| mIsSupposedToBePlaying = false; |
| notifyChange(PLAYSTATE_CHANGED); |
| return; |
| } else if (mRepeatMode == REPEAT_ALL || force) { |
| mPlayPos = 0; |
| } |
| } else { |
| mPlayPos++; |
| } |
| } |
| saveBookmarkIfNeeded(); |
| stop(false); |
| openCurrent(); |
| play(); |
| notifyChange(META_CHANGED); |
| } |
| } |
| |
| private void gotoIdleState() { |
| mDelayedStopHandler.removeCallbacksAndMessages(null); |
| Message msg = mDelayedStopHandler.obtainMessage(); |
| mDelayedStopHandler.sendMessageDelayed(msg, IDLE_DELAY); |
| stopForeground(true); |
| } |
| |
| private void saveBookmarkIfNeeded() { |
| try { |
| if (isPodcast()) { |
| long pos = position(); |
| long bookmark = getBookmark(); |
| long duration = duration(); |
| if ((pos < bookmark && (pos + 10000) > bookmark) || |
| (pos > bookmark && (pos - 10000) < bookmark)) { |
| // The existing bookmark is close to the current |
| // position, so don't update it. |
| return; |
| } |
| if (pos < 15000 || (pos + 10000) > duration) { |
| // if we're near the start or end, clear the bookmark |
| pos = 0; |
| } |
| |
| // write 'pos' to the bookmark field |
| ContentValues values = new ContentValues(); |
| values.put(MediaStore.Audio.Media.BOOKMARK, pos); |
| Uri uri = ContentUris.withAppendedId( |
| MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, mCursor.getLong(IDCOLIDX)); |
| getContentResolver().update(uri, values, null, null); |
| } |
| } catch (SQLiteException ex) { |
| } |
| } |
| |
| // Make sure there are at least 5 items after the currently playing item |
| // and no more than 10 items before. |
| private void doAutoShuffleUpdate() { |
| boolean notify = false; |
| |
| // remove old entries |
| if (mPlayPos > 10) { |
| removeTracks(0, mPlayPos - 9); |
| notify = true; |
| } |
| // add new entries if needed |
| int to_add = 7 - (mPlayListLen - (mPlayPos < 0 ? -1 : mPlayPos)); |
| for (int i = 0; i < to_add; i++) { |
| // pick something at random from the list |
| |
| int lookback = mHistory.size(); |
| int idx = -1; |
| while(true) { |
| idx = mRand.nextInt(mAutoShuffleList.length); |
| if (!wasRecentlyUsed(idx, lookback)) { |
| break; |
| } |
| lookback /= 2; |
| } |
| mHistory.add(idx); |
| if (mHistory.size() > MAX_HISTORY_SIZE) { |
| mHistory.remove(0); |
| } |
| ensurePlayListCapacity(mPlayListLen + 1); |
| mPlayList[mPlayListLen++] = mAutoShuffleList[idx]; |
| notify = true; |
| } |
| if (notify) { |
| notifyChange(QUEUE_CHANGED); |
| } |
| } |
| |
| // check that the specified idx is not in the history (but only look at at |
| // most lookbacksize entries in the history) |
| private boolean wasRecentlyUsed(int idx, int lookbacksize) { |
| |
| // early exit to prevent infinite loops in case idx == mPlayPos |
| if (lookbacksize == 0) { |
| return false; |
| } |
| |
| int histsize = mHistory.size(); |
| if (histsize < lookbacksize) { |
| Log.d(LOGTAG, "lookback too big"); |
| lookbacksize = histsize; |
| } |
| int maxidx = histsize - 1; |
| for (int i = 0; i < lookbacksize; i++) { |
| long entry = mHistory.get(maxidx - i); |
| if (entry == idx) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| // A simple variation of Random that makes sure that the |
| // value it returns is not equal to the value it returned |
| // previously, unless the interval is 1. |
| private static class Shuffler { |
| private int mPrevious; |
| private Random mRandom = new Random(); |
| public int nextInt(int interval) { |
| int ret; |
| do { |
| ret = mRandom.nextInt(interval); |
| } while (ret == mPrevious && interval > 1); |
| mPrevious = ret; |
| return ret; |
| } |
| }; |
| |
| private boolean makeAutoShuffleList() { |
| ContentResolver res = getContentResolver(); |
| Cursor c = null; |
| try { |
| c = res.query(MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, |
| new String[] {MediaStore.Audio.Media._ID}, MediaStore.Audio.Media.IS_MUSIC + "=1", |
| null, null); |
| if (c == null || c.getCount() == 0) { |
| return false; |
| } |
| int len = c.getCount(); |
| long [] list = new long[len]; |
| for (int i = 0; i < len; i++) { |
| c.moveToNext(); |
| list[i] = c.getLong(0); |
| } |
| mAutoShuffleList = list; |
| return true; |
| } catch (RuntimeException ex) { |
| } finally { |
| if (c != null) { |
| c.close(); |
| } |
| } |
| return false; |
| } |
| |
| /** |
| * Removes the range of tracks specified from the play list. If a file within the range is |
| * the file currently being played, playback will move to the next file after the |
| * range. |
| * @param first The first file to be removed |
| * @param last The last file to be removed |
| * @return the number of tracks deleted |
| */ |
| public int removeTracks(int first, int last) { |
| int numremoved = removeTracksInternal(first, last); |
| if (numremoved > 0) { |
| notifyChange(QUEUE_CHANGED); |
| } |
| return numremoved; |
| } |
| |
| private int removeTracksInternal(int first, int last) { |
| synchronized (this) { |
| if (last < first) return 0; |
| if (first < 0) first = 0; |
| if (last >= mPlayListLen) last = mPlayListLen - 1; |
| |
| boolean gotonext = false; |
| if (first <= mPlayPos && mPlayPos <= last) { |
| mPlayPos = first; |
| gotonext = true; |
| } else if (mPlayPos > last) { |
| mPlayPos -= (last - first + 1); |
| } |
| int num = mPlayListLen - last - 1; |
| for (int i = 0; i < num; i++) { |
| mPlayList[first + i] = mPlayList[last + 1 + i]; |
| } |
| mPlayListLen -= last - first + 1; |
| |
| if (gotonext) { |
| if (mPlayListLen == 0) { |
| stop(true); |
| mPlayPos = -1; |
| if (mCursor != null) { |
| mCursor.close(); |
| mCursor = null; |
| } |
| } else { |
| if (mPlayPos >= mPlayListLen) { |
| mPlayPos = 0; |
| } |
| boolean wasPlaying = isPlaying(); |
| stop(false); |
| openCurrent(); |
| if (wasPlaying) { |
| play(); |
| } |
| } |
| notifyChange(META_CHANGED); |
| } |
| return last - first + 1; |
| } |
| } |
| |
| /** |
| * Removes all instances of the track with the given id |
| * from the playlist. |
| * @param id The id to be removed |
| * @return how many instances of the track were removed |
| */ |
| public int removeTrack(long id) { |
| int numremoved = 0; |
| synchronized (this) { |
| for (int i = 0; i < mPlayListLen; i++) { |
| if (mPlayList[i] == id) { |
| numremoved += removeTracksInternal(i, i); |
| i--; |
| } |
| } |
| } |
| if (numremoved > 0) { |
| notifyChange(QUEUE_CHANGED); |
| } |
| return numremoved; |
| } |
| |
| public void setShuffleMode(int shufflemode) { |
| synchronized(this) { |
| if (mShuffleMode == shufflemode && mPlayListLen > 0) { |
| return; |
| } |
| mShuffleMode = shufflemode; |
| if (mShuffleMode == SHUFFLE_AUTO) { |
| if (makeAutoShuffleList()) { |
| mPlayListLen = 0; |
| doAutoShuffleUpdate(); |
| mPlayPos = 0; |
| openCurrent(); |
| play(); |
| notifyChange(META_CHANGED); |
| return; |
| } else { |
| // failed to build a list of files to shuffle |
| mShuffleMode = SHUFFLE_NONE; |
| } |
| } |
| saveQueue(false); |
| } |
| } |
| public int getShuffleMode() { |
| return mShuffleMode; |
| } |
| |
| public void setRepeatMode(int repeatmode) { |
| synchronized(this) { |
| mRepeatMode = repeatmode; |
| saveQueue(false); |
| } |
| } |
| public int getRepeatMode() { |
| return mRepeatMode; |
| } |
| |
| public int getMediaMountedCount() { |
| return mMediaMountedCount; |
| } |
| |
| /** |
| * Returns the path of the currently playing file, or null if |
| * no file is currently playing. |
| */ |
| public String getPath() { |
| return mFileToPlay; |
| } |
| |
| /** |
| * Returns the rowid of the currently playing file, or -1 if |
| * no file is currently playing. |
| */ |
| public long getAudioId() { |
| synchronized (this) { |
| if (mPlayPos >= 0 && mPlayer.isInitialized()) { |
| return mPlayList[mPlayPos]; |
| } |
| } |
| return -1; |
| } |
| |
| /** |
| * Returns the position in the queue |
| * @return the position in the queue |
| */ |
| public int getQueuePosition() { |
| synchronized(this) { |
| return mPlayPos; |
| } |
| } |
| |
| /** |
| * Starts playing the track at the given position in the queue. |
| * @param pos The position in the queue of the track that will be played. |
| */ |
| public void setQueuePosition(int pos) { |
| synchronized(this) { |
| stop(false); |
| mPlayPos = pos; |
| openCurrent(); |
| play(); |
| notifyChange(META_CHANGED); |
| if (mShuffleMode == SHUFFLE_AUTO) { |
| doAutoShuffleUpdate(); |
| } |
| } |
| } |
| |
| public String getArtistName() { |
| synchronized(this) { |
| if (mCursor == null) { |
| return null; |
| } |
| return mCursor.getString(mCursor.getColumnIndexOrThrow(MediaStore.Audio.Media.ARTIST)); |
| } |
| } |
| |
| public long getArtistId() { |
| synchronized (this) { |
| if (mCursor == null) { |
| return -1; |
| } |
| return mCursor.getLong(mCursor.getColumnIndexOrThrow(MediaStore.Audio.Media.ARTIST_ID)); |
| } |
| } |
| |
| public String getAlbumName() { |
| synchronized (this) { |
| if (mCursor == null) { |
| return null; |
| } |
| return mCursor.getString(mCursor.getColumnIndexOrThrow(MediaStore.Audio.Media.ALBUM)); |
| } |
| } |
| |
| public long getAlbumId() { |
| synchronized (this) { |
| if (mCursor == null) { |
| return -1; |
| } |
| return mCursor.getLong(mCursor.getColumnIndexOrThrow(MediaStore.Audio.Media.ALBUM_ID)); |
| } |
| } |
| |
| public String getTrackName() { |
| synchronized (this) { |
| if (mCursor == null) { |
| return null; |
| } |
| return mCursor.getString(mCursor.getColumnIndexOrThrow(MediaStore.Audio.Media.TITLE)); |
| } |
| } |
| |
| private boolean isPodcast() { |
| synchronized (this) { |
| if (mCursor == null) { |
| return false; |
| } |
| return (mCursor.getInt(PODCASTCOLIDX) > 0); |
| } |
| } |
| |
| private long getBookmark() { |
| synchronized (this) { |
| if (mCursor == null) { |
| return 0; |
| } |
| return mCursor.getLong(BOOKMARKCOLIDX); |
| } |
| } |
| |
| /** |
| * Returns the duration of the file in milliseconds. |
| * Currently this method returns -1 for the duration of MIDI files. |
| */ |
| public long duration() { |
| if (mPlayer.isInitialized()) { |
| return mPlayer.duration(); |
| } |
| return -1; |
| } |
| |
| /** |
| * Returns the current playback position in milliseconds |
| */ |
| public long position() { |
| if (mPlayer.isInitialized()) { |
| return mPlayer.position(); |
| } |
| return -1; |
| } |
| |
| /** |
| * Seeks to the position specified. |
| * |
| * @param pos The position to seek to, in milliseconds |
| */ |
| public long seek(long pos) { |
| if (mPlayer.isInitialized()) { |
| if (pos < 0) pos = 0; |
| if (pos > mPlayer.duration()) pos = mPlayer.duration(); |
| return mPlayer.seek(pos); |
| } |
| return -1; |
| } |
| |
| /** |
| * Sets the audio session ID. |
| * |
| * @param sessionId: the audio session ID. |
| */ |
| public void setAudioSessionId(int sessionId) { |
| synchronized (this) { |
| mPlayer.setAudioSessionId(sessionId); |
| } |
| } |
| |
| /** |
| * Returns the audio session ID. |
| */ |
| public int getAudioSessionId() { |
| synchronized (this) { |
| return mPlayer.getAudioSessionId(); |
| } |
| } |
| |
| /** |
| * Provides a unified interface for dealing with midi files and |
| * other media files. |
| */ |
| private class MultiPlayer { |
| private MediaPlayer mMediaPlayer = new MediaPlayer(); |
| private Handler mHandler; |
| private boolean mIsInitialized = false; |
| |
| public MultiPlayer() { |
| mMediaPlayer.setWakeMode(MediaPlaybackService.this, PowerManager.PARTIAL_WAKE_LOCK); |
| } |
| |
| public void setDataSource(String path) { |
| try { |
| mMediaPlayer.reset(); |
| mMediaPlayer.setOnPreparedListener(null); |
| if (path.startsWith("content://")) { |
| mMediaPlayer.setDataSource(MediaPlaybackService.this, Uri.parse(path)); |
| } else { |
| mMediaPlayer.setDataSource(path); |
| } |
| mMediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC); |
| mMediaPlayer.prepare(); |
| } catch (IOException ex) { |
| // TODO: notify the user why the file couldn't be opened |
| mIsInitialized = false; |
| return; |
| } catch (IllegalArgumentException ex) { |
| // TODO: notify the user why the file couldn't be opened |
| mIsInitialized = false; |
| return; |
| } |
| mMediaPlayer.setOnCompletionListener(listener); |
| mMediaPlayer.setOnErrorListener(errorListener); |
| Intent i = new Intent(AudioEffect.ACTION_OPEN_AUDIO_EFFECT_CONTROL_SESSION); |
| i.putExtra(AudioEffect.EXTRA_AUDIO_SESSION, getAudioSessionId()); |
| i.putExtra(AudioEffect.EXTRA_PACKAGE_NAME, getPackageName()); |
| sendBroadcast(i); |
| mIsInitialized = true; |
| } |
| |
| public boolean isInitialized() { |
| return mIsInitialized; |
| } |
| |
| public void start() { |
| MusicUtils.debugLog(new Exception("MultiPlayer.start called")); |
| mMediaPlayer.start(); |
| } |
| |
| public void stop() { |
| mMediaPlayer.reset(); |
| mIsInitialized = false; |
| } |
| |
| /** |
| * You CANNOT use this player anymore after calling release() |
| */ |
| public void release() { |
| stop(); |
| mMediaPlayer.release(); |
| } |
| |
| public void pause() { |
| mMediaPlayer.pause(); |
| } |
| |
| public void setHandler(Handler handler) { |
| mHandler = handler; |
| } |
| |
| MediaPlayer.OnCompletionListener listener = new MediaPlayer.OnCompletionListener() { |
| public void onCompletion(MediaPlayer mp) { |
| // Acquire a temporary wakelock, since when we return from |
| // this callback the MediaPlayer will release its wakelock |
| // and allow the device to go to sleep. |
| // This temporary wakelock is released when the RELEASE_WAKELOCK |
| // message is processed, but just in case, put a timeout on it. |
| mWakeLock.acquire(30000); |
| mHandler.sendEmptyMessage(TRACK_ENDED); |
| mHandler.sendEmptyMessage(RELEASE_WAKELOCK); |
| } |
| }; |
| |
| MediaPlayer.OnErrorListener errorListener = new MediaPlayer.OnErrorListener() { |
| public boolean onError(MediaPlayer mp, int what, int extra) { |
| switch (what) { |
| case MediaPlayer.MEDIA_ERROR_SERVER_DIED: |
| mIsInitialized = false; |
| mMediaPlayer.release(); |
| // Creating a new MediaPlayer and settings its wakemode does not |
| // require the media service, so it's OK to do this now, while the |
| // service is still being restarted |
| mMediaPlayer = new MediaPlayer(); |
| mMediaPlayer.setWakeMode(MediaPlaybackService.this, PowerManager.PARTIAL_WAKE_LOCK); |
| mHandler.sendMessageDelayed(mHandler.obtainMessage(SERVER_DIED), 2000); |
| return true; |
| default: |
| Log.d("MultiPlayer", "Error: " + what + "," + extra); |
| break; |
| } |
| return false; |
| } |
| }; |
| |
| public long duration() { |
| return mMediaPlayer.getDuration(); |
| } |
| |
| public long position() { |
| return mMediaPlayer.getCurrentPosition(); |
| } |
| |
| public long seek(long whereto) { |
| mMediaPlayer.seekTo((int) whereto); |
| return whereto; |
| } |
| |
| public void setVolume(float vol) { |
| mMediaPlayer.setVolume(vol, vol); |
| } |
| |
| public void setAudioSessionId(int sessionId) { |
| mMediaPlayer.setAudioSessionId(sessionId); |
| } |
| |
| public int getAudioSessionId() { |
| return mMediaPlayer.getAudioSessionId(); |
| } |
| } |
| |
| /* |
| * By making this a static class with a WeakReference to the Service, we |
| * ensure that the Service can be GCd even when the system process still |
| * has a remote reference to the stub. |
| */ |
| static class ServiceStub extends IMediaPlaybackService.Stub { |
| WeakReference<MediaPlaybackService> mService; |
| |
| ServiceStub(MediaPlaybackService service) { |
| mService = new WeakReference<MediaPlaybackService>(service); |
| } |
| |
| public void openFile(String path) |
| { |
| mService.get().open(path); |
| } |
| public void open(long [] list, int position) { |
| mService.get().open(list, position); |
| } |
| public int getQueuePosition() { |
| return mService.get().getQueuePosition(); |
| } |
| public void setQueuePosition(int index) { |
| mService.get().setQueuePosition(index); |
| } |
| public boolean isPlaying() { |
| return mService.get().isPlaying(); |
| } |
| public void stop() { |
| mService.get().stop(); |
| } |
| public void pause() { |
| mService.get().pause(); |
| } |
| public void play() { |
| mService.get().play(); |
| } |
| public void prev() { |
| mService.get().prev(); |
| } |
| public void next() { |
| mService.get().next(true); |
| } |
| public String getTrackName() { |
| return mService.get().getTrackName(); |
| } |
| public String getAlbumName() { |
| return mService.get().getAlbumName(); |
| } |
| public long getAlbumId() { |
| return mService.get().getAlbumId(); |
| } |
| public String getArtistName() { |
| return mService.get().getArtistName(); |
| } |
| public long getArtistId() { |
| return mService.get().getArtistId(); |
| } |
| public void enqueue(long [] list , int action) { |
| mService.get().enqueue(list, action); |
| } |
| public long [] getQueue() { |
| return mService.get().getQueue(); |
| } |
| public void moveQueueItem(int from, int to) { |
| mService.get().moveQueueItem(from, to); |
| } |
| public String getPath() { |
| return mService.get().getPath(); |
| } |
| public long getAudioId() { |
| return mService.get().getAudioId(); |
| } |
| public long position() { |
| return mService.get().position(); |
| } |
| public long duration() { |
| return mService.get().duration(); |
| } |
| public long seek(long pos) { |
| return mService.get().seek(pos); |
| } |
| public void setShuffleMode(int shufflemode) { |
| mService.get().setShuffleMode(shufflemode); |
| } |
| public int getShuffleMode() { |
| return mService.get().getShuffleMode(); |
| } |
| public int removeTracks(int first, int last) { |
| return mService.get().removeTracks(first, last); |
| } |
| public int removeTrack(long id) { |
| return mService.get().removeTrack(id); |
| } |
| public void setRepeatMode(int repeatmode) { |
| mService.get().setRepeatMode(repeatmode); |
| } |
| public int getRepeatMode() { |
| return mService.get().getRepeatMode(); |
| } |
| public int getMediaMountedCount() { |
| return mService.get().getMediaMountedCount(); |
| } |
| public int getAudioSessionId() { |
| return mService.get().getAudioSessionId(); |
| } |
| } |
| |
| @Override |
| protected void dump(FileDescriptor fd, PrintWriter writer, String[] args) { |
| writer.println("" + mPlayListLen + " items in queue, currently at index " + mPlayPos); |
| writer.println("Currently loaded:"); |
| writer.println(getArtistName()); |
| writer.println(getAlbumName()); |
| writer.println(getTrackName()); |
| writer.println(getPath()); |
| writer.println("playing: " + mIsSupposedToBePlaying); |
| writer.println("actual: " + mPlayer.mMediaPlayer.isPlaying()); |
| writer.println("shuffle mode: " + mShuffleMode); |
| MusicUtils.debugDump(writer); |
| } |
| |
| private final IBinder mBinder = new ServiceStub(this); |
| } |
