com.google.android.exoplayer2.util.EventDispatcher Java Examples

@SuppressWarnings("nullness:initialization.fields.uninitialized")
private DefaultDrmSessionManager(
    UUID uuid,
    ExoMediaDrm.Provider<T> exoMediaDrmProvider,
    MediaDrmCallback callback,
    HashMap<String, String> keyRequestParameters,
    boolean multiSession,
    int[] useDrmSessionsForClearContentTrackTypes,
    boolean playClearSamplesWithoutKeys,
    LoadErrorHandlingPolicy loadErrorHandlingPolicy) {
  Assertions.checkNotNull(uuid);
  Assertions.checkArgument(!C.COMMON_PSSH_UUID.equals(uuid), "Use C.CLEARKEY_UUID instead");
  this.uuid = uuid;
  this.exoMediaDrmProvider = exoMediaDrmProvider;
  this.callback = callback;
  this.keyRequestParameters = keyRequestParameters;
  this.eventDispatcher = new EventDispatcher<>();
  this.multiSession = multiSession;
  this.useDrmSessionsForClearContentTrackTypes = useDrmSessionsForClearContentTrackTypes;
  this.playClearSamplesWithoutKeys = playClearSamplesWithoutKeys;
  this.loadErrorHandlingPolicy = loadErrorHandlingPolicy;
  provisioningManagerImpl = new ProvisioningManagerImpl();
  mode = MODE_PLAYBACK;
  sessions = new ArrayList<>();
  provisioningSessions = new ArrayList<>();
}
 

private DefaultBandwidthMeter(
    @Nullable Context context,
    SparseArray<Long> initialBitrateEstimates,
    int maxWeight,
    Clock clock,
    boolean resetOnNetworkTypeChange) {
  this.context = context == null ? null : context.getApplicationContext();
  this.initialBitrateEstimates = initialBitrateEstimates;
  this.eventDispatcher = new EventDispatcher<>();
  this.slidingPercentile = new SlidingPercentile(maxWeight);
  this.clock = clock;
  // Set the initial network type and bitrate estimate
  networkType = context == null ? C.NETWORK_TYPE_UNKNOWN : Util.getNetworkType(context);
  bitrateEstimate = getInitialBitrateEstimateForNetworkType(networkType);
  // Register to receive connectivity actions if possible.
  if (context != null && resetOnNetworkTypeChange) {
    ConnectivityActionReceiver connectivityActionReceiver =
        ConnectivityActionReceiver.getInstance(context);
    connectivityActionReceiver.register(/* bandwidthMeter= */ this);
  }
}
 

/**
 * @param uuid The UUID of the drm scheme.
 * @param mediaDrm An underlying {@link ExoMediaDrm} for use by the manager.
 * @param callback Performs key and provisioning requests.
 * @param optionalKeyRequestParameters An optional map of parameters to pass as the last argument
 *     to {@link ExoMediaDrm#getKeyRequest(byte[], byte[], String, int, HashMap)}. May be null.
 * @param multiSession A boolean that specify whether multiple key session support is enabled.
 *     Default is false.
 * @param initialDrmRequestRetryCount The number of times to retry for initial provisioning and
 *     key request before reporting error.
 */
public DefaultDrmSessionManager(
    UUID uuid,
    ExoMediaDrm<T> mediaDrm,
    MediaDrmCallback callback,
    HashMap<String, String> optionalKeyRequestParameters,
    boolean multiSession,
    int initialDrmRequestRetryCount) {
  Assertions.checkNotNull(uuid);
  Assertions.checkNotNull(mediaDrm);
  Assertions.checkArgument(!C.COMMON_PSSH_UUID.equals(uuid), "Use C.CLEARKEY_UUID instead");
  this.uuid = uuid;
  this.mediaDrm = mediaDrm;
  this.callback = callback;
  this.optionalKeyRequestParameters = optionalKeyRequestParameters;
  this.eventDispatcher = new EventDispatcher<>();
  this.multiSession = multiSession;
  this.initialDrmRequestRetryCount = initialDrmRequestRetryCount;
  mode = MODE_PLAYBACK;
  sessions = new ArrayList<>();
  provisioningSessions = new ArrayList<>();
  if (multiSession) {
    mediaDrm.setPropertyString("sessionSharing", "enable");
  }
  mediaDrm.setOnEventListener(new MediaDrmEventListener());
}
 

/**
 * @param uuid The UUID of the drm scheme.
 * @param mediaDrm An underlying {@link ExoMediaDrm} for use by the manager.
 * @param callback Performs key and provisioning requests.
 * @param optionalKeyRequestParameters An optional map of parameters to pass as the last argument
 *     to {@link ExoMediaDrm#getKeyRequest(byte[], byte[], String, int, HashMap)}. May be null.
 * @param multiSession A boolean that specify whether multiple key session support is enabled.
 *     Default is false.
 * @param initialDrmRequestRetryCount The number of times to retry for initial provisioning and
 *     key request before reporting error.
 */
public DefaultDrmSessionManager(
    UUID uuid,
    ExoMediaDrm<T> mediaDrm,
    MediaDrmCallback callback,
    HashMap<String, String> optionalKeyRequestParameters,
    boolean multiSession,
    int initialDrmRequestRetryCount) {
  Assertions.checkNotNull(uuid);
  Assertions.checkNotNull(mediaDrm);
  Assertions.checkArgument(!C.COMMON_PSSH_UUID.equals(uuid), "Use C.CLEARKEY_UUID instead");
  this.uuid = uuid;
  this.mediaDrm = mediaDrm;
  this.callback = callback;
  this.optionalKeyRequestParameters = optionalKeyRequestParameters;
  this.eventDispatcher = new EventDispatcher<>();
  this.multiSession = multiSession;
  this.initialDrmRequestRetryCount = initialDrmRequestRetryCount;
  mode = MODE_PLAYBACK;
  sessions = new ArrayList<>();
  provisioningSessions = new ArrayList<>();
  if (multiSession) {
    mediaDrm.setPropertyString("sessionSharing", "enable");
  }
  mediaDrm.setOnEventListener(new MediaDrmEventListener());
}
 

private DefaultBandwidthMeter(
    @Nullable Context context,
    SparseArray<Long> initialBitrateEstimates,
    int maxWeight,
    Clock clock,
    boolean resetOnNetworkTypeChange) {
  this.context = context == null ? null : context.getApplicationContext();
  this.initialBitrateEstimates = initialBitrateEstimates;
  this.eventDispatcher = new EventDispatcher<>();
  this.slidingPercentile = new SlidingPercentile(maxWeight);
  this.clock = clock;
  // Set the initial network type and bitrate estimate
  networkType = context == null ? C.NETWORK_TYPE_UNKNOWN : Util.getNetworkType(context);
  bitrateEstimate = getInitialBitrateEstimateForNetworkType(networkType);
  // Register to receive connectivity actions if possible.
  if (context != null && resetOnNetworkTypeChange) {
    ConnectivityActionReceiver connectivityActionReceiver =
        ConnectivityActionReceiver.getInstance(context);
    connectivityActionReceiver.register(/* bandwidthMeter= */ this);
  }
}
 

private DefaultBandwidthMeter(
    @Nullable Context context,
    SparseArray<Long> initialBitrateEstimates,
    int maxWeight,
    Clock clock,
    boolean resetOnNetworkTypeChange) {
  this.context = context == null ? null : context.getApplicationContext();
  this.initialBitrateEstimates = initialBitrateEstimates;
  this.eventDispatcher = new EventDispatcher<>();
  this.slidingPercentile = new SlidingPercentile(maxWeight);
  this.clock = clock;
  // Set the initial network type and bitrate estimate
  networkType = context == null ? C.NETWORK_TYPE_UNKNOWN : Util.getNetworkType(context);
  bitrateEstimate = getInitialBitrateEstimateForNetworkType(networkType);
  // Register to receive connectivity actions if possible.
  if (context != null && resetOnNetworkTypeChange) {
    ConnectivityActionReceiver connectivityActionReceiver =
        ConnectivityActionReceiver.getInstance(context);
    connectivityActionReceiver.register(/* bandwidthMeter= */ this);
  }
}
 

/**
 * Instantiates a new DRM session.
 *
 * @param uuid The UUID of the drm scheme.
 * @param mediaDrm The media DRM.
 * @param provisioningManager The manager for provisioning.
 * @param schemeData The DRM data for this session, or null if a {@code offlineLicenseKeySetId} is
 *     provided.
 * @param mode The DRM mode.
 * @param offlineLicenseKeySetId The offline license key set identifier, or null when not using
 *     offline keys.
 * @param optionalKeyRequestParameters The optional key request parameters.
 * @param callback The media DRM callback.
 * @param playbackLooper The playback looper.
 * @param eventDispatcher The dispatcher for DRM session manager events.
 * @param initialDrmRequestRetryCount The number of times to retry for initial provisioning and
 *     key request before reporting error.
 */
public DefaultDrmSession(
    UUID uuid,
    ExoMediaDrm<T> mediaDrm,
    ProvisioningManager<T> provisioningManager,
    @Nullable SchemeData schemeData,
    @DefaultDrmSessionManager.Mode int mode,
    @Nullable byte[] offlineLicenseKeySetId,
    HashMap<String, String> optionalKeyRequestParameters,
    MediaDrmCallback callback,
    Looper playbackLooper,
    EventDispatcher<DefaultDrmSessionEventListener> eventDispatcher,
    int initialDrmRequestRetryCount) {
  this.uuid = uuid;
  this.provisioningManager = provisioningManager;
  this.mediaDrm = mediaDrm;
  this.mode = mode;
  this.offlineLicenseKeySetId = offlineLicenseKeySetId;
  this.schemeData = offlineLicenseKeySetId == null ? schemeData : null;
  this.optionalKeyRequestParameters = optionalKeyRequestParameters;
  this.callback = callback;
  this.initialDrmRequestRetryCount = initialDrmRequestRetryCount;
  this.eventDispatcher = eventDispatcher;
  state = STATE_OPENING;

  postResponseHandler = new PostResponseHandler(playbackLooper);
  requestHandlerThread = new HandlerThread("DrmRequestHandler");
  requestHandlerThread.start();
  postRequestHandler = new PostRequestHandler(requestHandlerThread.getLooper());
}
 

private DefaultBandwidthMeter(
    long initialBitrateEstimate,
    int maxWeight,
    Clock clock) {
  this.eventDispatcher = new EventDispatcher<>();
  this.slidingPercentile = new SlidingPercentile(maxWeight);
  this.clock = clock;
  bitrateEstimate = initialBitrateEstimate;
}
 

/**
 * Instantiates a new DRM session.
 *
 * @param uuid The UUID of the drm scheme.
 * @param mediaDrm The media DRM.
 * @param provisioningManager The manager for provisioning.
 * @param schemeData The DRM data for this session, or null if a {@code offlineLicenseKeySetId} is
 *     provided.
 * @param mode The DRM mode.
 * @param offlineLicenseKeySetId The offline license key set identifier, or null when not using
 *     offline keys.
 * @param optionalKeyRequestParameters The optional key request parameters.
 * @param callback The media DRM callback.
 * @param playbackLooper The playback looper.
 * @param eventDispatcher The dispatcher for DRM session manager events.
 * @param initialDrmRequestRetryCount The number of times to retry for initial provisioning and
 *     key request before reporting error.
 */
public DefaultDrmSession(
    UUID uuid,
    ExoMediaDrm<T> mediaDrm,
    ProvisioningManager<T> provisioningManager,
    @Nullable SchemeData schemeData,
    @DefaultDrmSessionManager.Mode int mode,
    @Nullable byte[] offlineLicenseKeySetId,
    HashMap<String, String> optionalKeyRequestParameters,
    MediaDrmCallback callback,
    Looper playbackLooper,
    EventDispatcher<DefaultDrmSessionEventListener> eventDispatcher,
    int initialDrmRequestRetryCount) {
  this.uuid = uuid;
  this.provisioningManager = provisioningManager;
  this.mediaDrm = mediaDrm;
  this.mode = mode;
  this.offlineLicenseKeySetId = offlineLicenseKeySetId;
  this.schemeData = offlineLicenseKeySetId == null ? schemeData : null;
  this.optionalKeyRequestParameters = optionalKeyRequestParameters;
  this.callback = callback;
  this.initialDrmRequestRetryCount = initialDrmRequestRetryCount;
  this.eventDispatcher = eventDispatcher;
  state = STATE_OPENING;

  postResponseHandler = new PostResponseHandler(playbackLooper);
  requestHandlerThread = new HandlerThread("DrmRequestHandler");
  requestHandlerThread.start();
  postRequestHandler = new PostRequestHandler(requestHandlerThread.getLooper());
}
 

private DefaultBandwidthMeter(
    long initialBitrateEstimate,
    int maxWeight,
    Clock clock) {
  this.eventDispatcher = new EventDispatcher<>();
  this.slidingPercentile = new SlidingPercentile(maxWeight);
  this.clock = clock;
  bitrateEstimate = initialBitrateEstimate;
}
 

/**
 * @param uuid The UUID of the drm scheme.
 * @param mediaDrm An underlying {@link ExoMediaDrm} for use by the manager.
 * @param callback Performs key and provisioning requests.
 * @param optionalKeyRequestParameters An optional map of parameters to pass as the last argument
 *     to {@link ExoMediaDrm#getKeyRequest(byte[], List, int, HashMap)}. May be null.
 * @param multiSession A boolean that specify whether multiple key session support is enabled.
 *     Default is false.
 * @param initialDrmRequestRetryCount The number of times to retry for initial provisioning and
 *     key request before reporting error.
 */
public DefaultDrmSessionManager(
    UUID uuid,
    ExoMediaDrm<T> mediaDrm,
    MediaDrmCallback callback,
    @Nullable HashMap<String, String> optionalKeyRequestParameters,
    boolean multiSession,
    int initialDrmRequestRetryCount) {
  Assertions.checkNotNull(uuid);
  Assertions.checkNotNull(mediaDrm);
  Assertions.checkArgument(!C.COMMON_PSSH_UUID.equals(uuid), "Use C.CLEARKEY_UUID instead");
  this.uuid = uuid;
  this.mediaDrm = mediaDrm;
  this.callback = callback;
  this.optionalKeyRequestParameters = optionalKeyRequestParameters;
  this.eventDispatcher = new EventDispatcher<>();
  this.multiSession = multiSession;
  this.initialDrmRequestRetryCount = initialDrmRequestRetryCount;
  mode = MODE_PLAYBACK;
  sessions = new ArrayList<>();
  provisioningSessions = new ArrayList<>();
  if (multiSession && C.WIDEVINE_UUID.equals(uuid) && Util.SDK_INT >= 19) {
    // TODO: Enabling session sharing probably doesn't do anything useful here. It would only be
    // useful if DefaultDrmSession instances were aware of one another's state, which is not
    // implemented. Or if custom renderers are being used that allow playback to proceed before
    // keys, which seems unlikely to be true in practice.
    mediaDrm.setPropertyString("sessionSharing", "enable");
  }
  mediaDrm.setOnEventListener(new MediaDrmEventListener());
}
 

/**
 * Instantiates a new DRM session.
 *
 * @param uuid The UUID of the drm scheme.
 * @param mediaDrm The media DRM.
 * @param provisioningManager The manager for provisioning.
 * @param schemeDatas DRM scheme datas for this session, or null if an {@code
 *     offlineLicenseKeySetId} is provided.
 * @param mode The DRM mode.
 * @param offlineLicenseKeySetId The offline license key set identifier, or null when not using
 *     offline keys.
 * @param optionalKeyRequestParameters The optional key request parameters.
 * @param callback The media DRM callback.
 * @param playbackLooper The playback looper.
 * @param eventDispatcher The dispatcher for DRM session manager events.
 * @param initialDrmRequestRetryCount The number of times to retry for initial provisioning and
 *     key request before reporting error.
 */
public DefaultDrmSession(
    UUID uuid,
    ExoMediaDrm<T> mediaDrm,
    ProvisioningManager<T> provisioningManager,
    @Nullable List<SchemeData> schemeDatas,
    @DefaultDrmSessionManager.Mode int mode,
    @Nullable byte[] offlineLicenseKeySetId,
    @Nullable HashMap<String, String> optionalKeyRequestParameters,
    MediaDrmCallback callback,
    Looper playbackLooper,
    EventDispatcher<DefaultDrmSessionEventListener> eventDispatcher,
    int initialDrmRequestRetryCount) {
  if (mode == DefaultDrmSessionManager.MODE_QUERY
      || mode == DefaultDrmSessionManager.MODE_RELEASE) {
    Assertions.checkNotNull(offlineLicenseKeySetId);
  }
  this.uuid = uuid;
  this.provisioningManager = provisioningManager;
  this.mediaDrm = mediaDrm;
  this.mode = mode;
  if (offlineLicenseKeySetId != null) {
    this.offlineLicenseKeySetId = offlineLicenseKeySetId;
    this.schemeDatas = null;
  } else {
    this.schemeDatas = Collections.unmodifiableList(Assertions.checkNotNull(schemeDatas));
  }
  this.optionalKeyRequestParameters = optionalKeyRequestParameters;
  this.callback = callback;
  this.initialDrmRequestRetryCount = initialDrmRequestRetryCount;
  this.eventDispatcher = eventDispatcher;
  state = STATE_OPENING;

  postResponseHandler = new PostResponseHandler(playbackLooper);
  requestHandlerThread = new HandlerThread("DrmRequestHandler");
  requestHandlerThread.start();
  postRequestHandler = new PostRequestHandler(requestHandlerThread.getLooper());
}
 

/**
 * @param uuid The UUID of the drm scheme.
 * @param mediaDrm An underlying {@link ExoMediaDrm} for use by the manager.
 * @param callback Performs key and provisioning requests.
 * @param optionalKeyRequestParameters An optional map of parameters to pass as the last argument
 *     to {@link ExoMediaDrm#getKeyRequest(byte[], List, int, HashMap)}. May be null.
 * @param multiSession A boolean that specify whether multiple key session support is enabled.
 *     Default is false.
 * @param initialDrmRequestRetryCount The number of times to retry for initial provisioning and
 *     key request before reporting error.
 */
public DefaultDrmSessionManager(
    UUID uuid,
    ExoMediaDrm<T> mediaDrm,
    MediaDrmCallback callback,
    @Nullable HashMap<String, String> optionalKeyRequestParameters,
    boolean multiSession,
    int initialDrmRequestRetryCount) {
  Assertions.checkNotNull(uuid);
  Assertions.checkNotNull(mediaDrm);
  Assertions.checkArgument(!C.COMMON_PSSH_UUID.equals(uuid), "Use C.CLEARKEY_UUID instead");
  this.uuid = uuid;
  this.mediaDrm = mediaDrm;
  this.callback = callback;
  this.optionalKeyRequestParameters = optionalKeyRequestParameters;
  this.eventDispatcher = new EventDispatcher<>();
  this.multiSession = multiSession;
  this.initialDrmRequestRetryCount = initialDrmRequestRetryCount;
  mode = MODE_PLAYBACK;
  sessions = new ArrayList<>();
  provisioningSessions = new ArrayList<>();
  if (multiSession && C.WIDEVINE_UUID.equals(uuid) && Util.SDK_INT >= 19) {
    // TODO: Enabling session sharing probably doesn't do anything useful here. It would only be
    // useful if DefaultDrmSession instances were aware of one another's state, which is not
    // implemented. Or if custom renderers are being used that allow playback to proceed before
    // keys, which seems unlikely to be true in practice.
    mediaDrm.setPropertyString("sessionSharing", "enable");
  }
  mediaDrm.setOnEventListener(new MediaDrmEventListener());
}
 

/**
 * Instantiates a new DRM session.
 *
 * @param uuid The UUID of the drm scheme.
 * @param mediaDrm The media DRM.
 * @param provisioningManager The manager for provisioning.
 * @param schemeDatas DRM scheme datas for this session, or null if an {@code
 *     offlineLicenseKeySetId} is provided.
 * @param mode The DRM mode.
 * @param offlineLicenseKeySetId The offline license key set identifier, or null when not using
 *     offline keys.
 * @param optionalKeyRequestParameters The optional key request parameters.
 * @param callback The media DRM callback.
 * @param playbackLooper The playback looper.
 * @param eventDispatcher The dispatcher for DRM session manager events.
 * @param initialDrmRequestRetryCount The number of times to retry for initial provisioning and
 *     key request before reporting error.
 */
public DefaultDrmSession(
    UUID uuid,
    ExoMediaDrm<T> mediaDrm,
    ProvisioningManager<T> provisioningManager,
    @Nullable List<SchemeData> schemeDatas,
    @DefaultDrmSessionManager.Mode int mode,
    @Nullable byte[] offlineLicenseKeySetId,
    @Nullable HashMap<String, String> optionalKeyRequestParameters,
    MediaDrmCallback callback,
    Looper playbackLooper,
    EventDispatcher<DefaultDrmSessionEventListener> eventDispatcher,
    int initialDrmRequestRetryCount) {
  if (mode == DefaultDrmSessionManager.MODE_QUERY
      || mode == DefaultDrmSessionManager.MODE_RELEASE) {
    Assertions.checkNotNull(offlineLicenseKeySetId);
  }
  this.uuid = uuid;
  this.provisioningManager = provisioningManager;
  this.mediaDrm = mediaDrm;
  this.mode = mode;
  if (offlineLicenseKeySetId != null) {
    this.offlineLicenseKeySetId = offlineLicenseKeySetId;
    this.schemeDatas = null;
  } else {
    this.schemeDatas = Collections.unmodifiableList(Assertions.checkNotNull(schemeDatas));
  }
  this.optionalKeyRequestParameters = optionalKeyRequestParameters;
  this.callback = callback;
  this.initialDrmRequestRetryCount = initialDrmRequestRetryCount;
  this.eventDispatcher = eventDispatcher;
  state = STATE_OPENING;

  postResponseHandler = new PostResponseHandler(playbackLooper);
  requestHandlerThread = new HandlerThread("DrmRequestHandler");
  requestHandlerThread.start();
  postRequestHandler = new PostRequestHandler(requestHandlerThread.getLooper());
}
 

/**
 * Instantiates a new DRM session.
 *
 * @param uuid The UUID of the drm scheme.
 * @param mediaDrm The media DRM.
 * @param provisioningManager The manager for provisioning.
 * @param releaseCallback The {@link ReleaseCallback}.
 * @param schemeDatas DRM scheme datas for this session, or null if an {@code
 *     offlineLicenseKeySetId} is provided or if {@code isPlaceholderSession} is true.
 * @param mode The DRM mode. Ignored if {@code isPlaceholderSession} is true.
 * @param isPlaceholderSession Whether this session is not expected to acquire any keys.
 * @param offlineLicenseKeySetId The offline license key set identifier, or null when not using
 *     offline keys.
 * @param keyRequestParameters Key request parameters.
 * @param callback The media DRM callback.
 * @param playbackLooper The playback looper.
 * @param eventDispatcher The dispatcher for DRM session manager events.
 * @param loadErrorHandlingPolicy The {@link LoadErrorHandlingPolicy} for key and provisioning
 *     requests.
 */
// the constructor does not initialize fields: sessionId
@SuppressWarnings("nullness:initialization.fields.uninitialized")
public DefaultDrmSession(
    UUID uuid,
    ExoMediaDrm<T> mediaDrm,
    ProvisioningManager<T> provisioningManager,
    ReleaseCallback<T> releaseCallback,
    @Nullable List<SchemeData> schemeDatas,
    @DefaultDrmSessionManager.Mode int mode,
    boolean playClearSamplesWithoutKeys,
    boolean isPlaceholderSession,
    @Nullable byte[] offlineLicenseKeySetId,
    HashMap<String, String> keyRequestParameters,
    MediaDrmCallback callback,
    Looper playbackLooper,
    EventDispatcher<DefaultDrmSessionEventListener> eventDispatcher,
    LoadErrorHandlingPolicy loadErrorHandlingPolicy) {
  if (mode == DefaultDrmSessionManager.MODE_QUERY
      || mode == DefaultDrmSessionManager.MODE_RELEASE) {
    Assertions.checkNotNull(offlineLicenseKeySetId);
  }
  this.uuid = uuid;
  this.provisioningManager = provisioningManager;
  this.releaseCallback = releaseCallback;
  this.mediaDrm = mediaDrm;
  this.mode = mode;
  this.playClearSamplesWithoutKeys = playClearSamplesWithoutKeys;
  this.isPlaceholderSession = isPlaceholderSession;
  if (offlineLicenseKeySetId != null) {
    this.offlineLicenseKeySetId = offlineLicenseKeySetId;
    this.schemeDatas = null;
  } else {
    this.schemeDatas = Collections.unmodifiableList(Assertions.checkNotNull(schemeDatas));
  }
  this.keyRequestParameters = keyRequestParameters;
  this.callback = callback;
  this.eventDispatcher = eventDispatcher;
  this.loadErrorHandlingPolicy = loadErrorHandlingPolicy;
  state = STATE_OPENING;
  responseHandler = new ResponseHandler(playbackLooper);
}