Example usage for android.media.audiofx Equalizer Equalizer

Introduction

In this page you can find the example usage for android.media.audiofx Equalizer Equalizer.

Prototype

public Equalizer(int priority, int audioSession) throws IllegalStateException, IllegalArgumentException,
        UnsupportedOperationException, RuntimeException 

Source Link

Document

Class constructor.

Usage

From source file:com.andreadec.musicplayer.MusicService.java

/**
 * Called when the service is created.//from  ww  w . ja  v a 2 s .  com
 */
@Override
public void onCreate() {
    PowerManager powerManager = (PowerManager) getSystemService(Context.POWER_SERVICE);
    wakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "MusicServiceWakelock");

    // Initialize the telephony manager
    telephonyManager = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);
    phoneStateListener = new MusicPhoneStateListener();
    notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

    // Initialize pending intents
    quitPendingIntent = PendingIntent.getBroadcast(this, 0, new Intent("com.andreadec.musicplayer.quit"), 0);
    previousPendingIntent = PendingIntent.getBroadcast(this, 0,
            new Intent("com.andreadec.musicplayer.previous"), 0);
    playpausePendingIntent = PendingIntent.getBroadcast(this, 0,
            new Intent("com.andreadec.musicplayer.playpause"), 0);
    nextPendingIntent = PendingIntent.getBroadcast(this, 0, new Intent("com.andreadec.musicplayer.next"), 0);
    pendingIntent = PendingIntent.getActivity(this, 0,
            new Intent(this, MainActivity.class).setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP),
            PendingIntent.FLAG_UPDATE_CURRENT);

    // Read saved user preferences
    preferences = PreferenceManager.getDefaultSharedPreferences(this);

    // Initialize the media player
    mediaPlayer = new MediaPlayer();
    mediaPlayer.setOnCompletionListener(this);
    mediaPlayer.setWakeMode(this, PowerManager.PARTIAL_WAKE_LOCK); // Enable the wake lock to keep CPU running when the screen is switched off

    shuffle = preferences.getBoolean(Constants.PREFERENCE_SHUFFLE, Constants.DEFAULT_SHUFFLE);
    repeat = preferences.getBoolean(Constants.PREFERENCE_REPEAT, Constants.DEFAULT_REPEAT);
    repeatAll = preferences.getBoolean(Constants.PREFERENCE_REPEATALL, Constants.DEFAULT_REPEATALL);
    try { // This may fail if the device doesn't support bass boost
        bassBoost = new BassBoost(1, mediaPlayer.getAudioSessionId());
        bassBoost.setEnabled(
                preferences.getBoolean(Constants.PREFERENCE_BASSBOOST, Constants.DEFAULT_BASSBOOST));
        setBassBoostStrength(preferences.getInt(Constants.PREFERENCE_BASSBOOSTSTRENGTH,
                Constants.DEFAULT_BASSBOOSTSTRENGTH));
        bassBoostAvailable = true;
    } catch (Exception e) {
        bassBoostAvailable = false;
    }
    try { // This may fail if the device doesn't support equalizer
        equalizer = new Equalizer(1, mediaPlayer.getAudioSessionId());
        equalizer.setEnabled(
                preferences.getBoolean(Constants.PREFERENCE_EQUALIZER, Constants.DEFAULT_EQUALIZER));
        setEqualizerPreset(
                preferences.getInt(Constants.PREFERENCE_EQUALIZERPRESET, Constants.DEFAULT_EQUALIZERPRESET));
        equalizerAvailable = true;
    } catch (Exception e) {
        equalizerAvailable = false;
    }
    random = new Random(System.nanoTime()); // Necessary for song shuffle

    shakeListener = new ShakeListener(this);
    if (preferences.getBoolean(Constants.PREFERENCE_SHAKEENABLED, Constants.DEFAULT_SHAKEENABLED)) {
        shakeListener.enable();
    }

    telephonyManager.listen(phoneStateListener, PhoneStateListener.LISTEN_CALL_STATE); // Start listen for telephony events

    // Inizialize the audio manager
    audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
    mediaButtonReceiverComponent = new ComponentName(getPackageName(), MediaButtonReceiver.class.getName());
    audioManager.registerMediaButtonEventReceiver(mediaButtonReceiverComponent);
    audioManager.requestAudioFocus(null, AudioManager.STREAM_MUSIC, AudioManager.AUDIOFOCUS_GAIN);

    // Initialize remote control client
    if (Build.VERSION.SDK_INT >= 14) {
        icon = BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher);
        Intent mediaButtonIntent = new Intent(Intent.ACTION_MEDIA_BUTTON);
        mediaButtonIntent.setComponent(mediaButtonReceiverComponent);
        PendingIntent mediaPendingIntent = PendingIntent.getBroadcast(getApplicationContext(), 0,
                mediaButtonIntent, 0);

        remoteControlClient = new RemoteControlClient(mediaPendingIntent);
        remoteControlClient.setTransportControlFlags(RemoteControlClient.FLAG_KEY_MEDIA_PLAY_PAUSE
                | RemoteControlClient.FLAG_KEY_MEDIA_PREVIOUS | RemoteControlClient.FLAG_KEY_MEDIA_NEXT);
        audioManager.registerRemoteControlClient(remoteControlClient);
    }

    updateNotificationMessage();

    IntentFilter intentFilter = new IntentFilter();
    intentFilter.addAction("com.andreadec.musicplayer.quit");
    intentFilter.addAction("com.andreadec.musicplayer.previous");
    intentFilter.addAction("com.andreadec.musicplayer.previousNoRestart");
    intentFilter.addAction("com.andreadec.musicplayer.playpause");
    intentFilter.addAction("com.andreadec.musicplayer.next");
    intentFilter.addAction(AudioManager.ACTION_AUDIO_BECOMING_NOISY);
    broadcastReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            String action = intent.getAction();
            if (action.equals("com.andreadec.musicplayer.quit")) {
                sendBroadcast(new Intent("com.andreadec.musicplayer.quitactivity"));
                stopSelf();
                return;
            } else if (action.equals("com.andreadec.musicplayer.previous")) {
                previousItem(false);
            } else if (action.equals("com.andreadec.musicplayer.previousNoRestart")) {
                previousItem(true);
            } else if (action.equals("com.andreadec.musicplayer.playpause")) {
                playPause();
            } else if (action.equals("com.andreadec.musicplayer.next")) {
                nextItem();
            } else if (action.equals(AudioManager.ACTION_AUDIO_BECOMING_NOISY)) {
                if (preferences.getBoolean(Constants.PREFERENCE_STOPPLAYINGWHENHEADSETDISCONNECTED,
                        Constants.DEFAULT_STOPPLAYINGWHENHEADSETDISCONNECTED)) {
                    pause();
                }
            }
        }
    };
    registerReceiver(broadcastReceiver, intentFilter);

    if (!isPlaying()) {
        loadLastSong();
    }

    startForeground(Constants.NOTIFICATION_MAIN, notification);
}

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