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refactor: let exoplayer handle audio focus
commit fcf2c62d9a1d997be64c268c7689b4ca59fef1d4 by jakobkukla
This commit is contained in:
CappielloAntonio
parent
7e2ba5a71a
commit
3a0888ac31
2 changed files with 18 additions and 111 deletions
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@ -11,6 +11,8 @@ import com.cappielloantonio.play.model.Song;
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import com.cappielloantonio.play.util.DownloadUtil;
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import com.cappielloantonio.play.util.MusicUtil;
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import com.cappielloantonio.play.util.PreferenceUtil;
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import com.google.android.exoplayer2.C;
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import com.google.android.exoplayer2.audio.AudioAttributes;
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import com.google.android.exoplayer2.ExoPlaybackException;
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import com.google.android.exoplayer2.ExoPlayer;
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import com.google.android.exoplayer2.MediaItem;
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@ -88,8 +90,14 @@ public class MultiPlayer implements Playback {
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.setUpstreamDataSourceFactory(DownloadUtil.getHttpDataSourceFactory(context))
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.setCacheWriteDataSinkFactory(null); // Disable writing.
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AudioAttributes audioAttributes = new AudioAttributes.Builder()
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.setUsage(C.USAGE_MEDIA)
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.setContentType(C.CONTENT_TYPE_MUSIC)
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.build();
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exoPlayer = new SimpleExoPlayer.Builder(context)
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.setMediaSourceFactory(new DefaultMediaSourceFactory(cacheDataSourceFactory))
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.setAudioAttributes(audioAttributes, true)
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.build();
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// TODO: “Player is accessed on the wrong thread” suppressed
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@ -56,6 +56,7 @@ import static com.google.android.exoplayer2.Player.MEDIA_ITEM_TRANSITION_REASON_
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import static com.google.android.exoplayer2.Player.PLAY_WHEN_READY_CHANGE_REASON_END_OF_MEDIA_ITEM;
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public class MusicService extends Service implements Playback.PlaybackCallbacks {
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private static final String TAG = "MusicService";
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public static final String PACKAGE_NAME = "com.antoniocappiello.play";
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public static final String ACTION_TOGGLE = PACKAGE_NAME + ".toggle";
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public static final String ACTION_PLAY = PACKAGE_NAME + ".play";
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@ -77,11 +78,7 @@ public class MusicService extends Service implements Playback.PlaybackCallbacks
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public static final int PLAY_SONG = 3;
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public static final int PREPARE_NEXT = 4;
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public static final int SET_POSITION = 5;
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public static final int FOCUS_CHANGE = 6;
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public static final int DUCK = 7;
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public static final int UNDUCK = 8;
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public static final int LOAD_QUEUE = 9;
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private static final String TAG = "MusicService";
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private static final long MEDIA_SESSION_ACTIONS = PlaybackStateCompat.ACTION_PLAY
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| PlaybackStateCompat.ACTION_PAUSE
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| PlaybackStateCompat.ACTION_PLAY_PAUSE
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@ -97,7 +94,6 @@ public class MusicService extends Service implements Playback.PlaybackCallbacks
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private int nextPosition = -1;
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private boolean notHandledMetaChangedForCurrentTrack;
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private boolean queuesRestored;
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private boolean pausedByTransientLossOfFocus;
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private PlayingNotification playingNotification;
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private final BroadcastReceiver becomingNoisyReceiver = new BroadcastReceiver() {
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@Override
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@ -107,16 +103,9 @@ public class MusicService extends Service implements Playback.PlaybackCallbacks
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}
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}
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};
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private AudioManager audioManager;
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private MediaSessionCompat mediaSession;
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private PowerManager.WakeLock wakeLock;
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private PlaybackHandler playerHandler;
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private final AudioManager.OnAudioFocusChangeListener audioFocusListener = new AudioManager.OnAudioFocusChangeListener() {
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@Override
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public void onAudioFocusChange(final int focusChange) {
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playerHandler.obtainMessage(FOCUS_CHANGE, focusChange, 0).sendToTarget();
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}
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};
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private Handler uiThreadHandler;
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private ThrottledSeekHandler throttledSeekHandler;
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private QueueHandler queueHandler;
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@ -160,14 +149,6 @@ public class MusicService extends Service implements Playback.PlaybackCallbacks
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mediaSession.setActive(true);
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}
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private AudioManager getAudioManager() {
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if (audioManager == null) {
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audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
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}
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return audioManager;
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}
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private void initMediaSession() {
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ComponentName mediaButtonReceiverComponentName = new ComponentName(getApplicationContext(), MediaButtonIntentReceiver.class);
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@ -332,8 +313,6 @@ public class MusicService extends Service implements Playback.PlaybackCallbacks
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private void quit() {
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pause();
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playingNotification.stop();
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getAudioManager().abandonAudioFocus(audioFocusListener);
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stopSelf();
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}
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@ -412,10 +391,6 @@ public class MusicService extends Service implements Playback.PlaybackCallbacks
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increaseSongCount();
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}
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private boolean requestFocus() {
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return getAudioManager().requestAudioFocus(audioFocusListener, AudioManager.STREAM_MUSIC, AudioManager.AUDIOFOCUS_GAIN) == AudioManager.AUDIOFOCUS_REQUEST_GRANTED;
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}
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public void initNotification() {
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playingNotification = new PlayingNotification();
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playingNotification.init(this);
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@ -582,7 +557,6 @@ public class MusicService extends Service implements Playback.PlaybackCallbacks
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}
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public void pause() {
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pausedByTransientLossOfFocus = false;
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if (playback.isPlaying()) {
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playback.pause();
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notifyChange(STATE_CHANGED);
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@ -591,27 +565,17 @@ public class MusicService extends Service implements Playback.PlaybackCallbacks
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public void play() {
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synchronized (this) {
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if (requestFocus()) {
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if (!playback.isPlaying()) {
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if (!playback.isReady()) {
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playSongAt(getPosition());
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} else {
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playback.start();
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if (notHandledMetaChangedForCurrentTrack) {
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handleChangeInternal(META_CHANGED);
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notHandledMetaChangedForCurrentTrack = false;
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}
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notifyChange(STATE_CHANGED);
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// fixes a bug where the volume would stay ducked
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// happens when audio focus GAIN event not sent
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playerHandler.removeMessages(DUCK);
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playerHandler.sendEmptyMessage(UNDUCK);
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if (!playback.isPlaying()) {
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if (!playback.isReady()) {
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playSongAt(getPosition());
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} else {
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playback.start();
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if (notHandledMetaChangedForCurrentTrack) {
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handleChangeInternal(META_CHANGED);
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notHandledMetaChangedForCurrentTrack = false;
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}
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notifyChange(STATE_CHANGED);
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}
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} else {
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Toast.makeText(this, getResources().getString(R.string.audio_focus_denied), Toast.LENGTH_SHORT).show();
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}
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}
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}
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@ -758,7 +722,6 @@ public class MusicService extends Service implements Playback.PlaybackCallbacks
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private static final class PlaybackHandler extends Handler {
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private final WeakReference<MusicService> mService;
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private int currentDuckVolume = 100;
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public PlaybackHandler(final MusicService service, @NonNull final Looper looper) {
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super(looper);
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@ -773,36 +736,6 @@ public class MusicService extends Service implements Playback.PlaybackCallbacks
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}
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switch (msg.what) {
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case DUCK:
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if (PreferenceUtil.getInstance(service).getAudioDucking()) {
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currentDuckVolume -= 5;
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if (currentDuckVolume > 20) {
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sendEmptyMessageDelayed(DUCK, 10);
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} else {
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currentDuckVolume = 20;
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}
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} else {
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currentDuckVolume = 100;
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}
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service.playback.setVolume(currentDuckVolume);
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break;
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case UNDUCK:
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if (PreferenceUtil.getInstance(service).getAudioDucking()) {
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currentDuckVolume += 3;
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if (currentDuckVolume < 100) {
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sendEmptyMessageDelayed(UNDUCK, 10);
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} else {
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currentDuckVolume = 100;
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}
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} else {
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currentDuckVolume = 100;
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}
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service.playback.setVolume(currentDuckVolume);
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break;
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case TRACK_CHANGED:
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if (service.isLastTrack()) {
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service.pause();
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@ -851,40 +784,6 @@ public class MusicService extends Service implements Playback.PlaybackCallbacks
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case PREPARE_NEXT:
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service.prepareNextImpl();
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break;
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case FOCUS_CHANGE:
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switch (msg.arg1) {
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case AudioManager.AUDIOFOCUS_GAIN:
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if (!service.isPlaying() && service.pausedByTransientLossOfFocus) {
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service.play();
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service.pausedByTransientLossOfFocus = false;
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}
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removeMessages(DUCK);
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sendEmptyMessage(UNDUCK);
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break;
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case AudioManager.AUDIOFOCUS_LOSS:
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// Lost focus for an unbounded amount of time: stop playback and release media playback
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service.pause();
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break;
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case AudioManager.AUDIOFOCUS_LOSS_TRANSIENT:
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// Lost focus for a short time, but we have to stop
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// playback. We don't release the media playback because playback
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// is likely to resume
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boolean wasPlaying = service.isPlaying();
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service.pause();
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service.pausedByTransientLossOfFocus = wasPlaying;
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break;
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case AudioManager.AUDIOFOCUS_LOSS_TRANSIENT_CAN_DUCK:
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// Lost focus for a short time, but it's ok to keep playing
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// at an attenuated level
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removeMessages(UNDUCK);
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sendEmptyMessage(DUCK);
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break;
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}
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break;
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}
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}
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}
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