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   1 /**
   2  * Copyright (c) 2010-2022 Contributors to the openHAB project
   3  *
   4  * See the NOTICE file(s) distributed with this work for additional
   5  * information.
   6  *
   7  * This program and the accompanying materials are made available under the
   8  * terms of the Eclipse Public License 2.0 which is available at
   9  * http://www.eclipse.org/legal/epl-2.0
  10  *
  11  * SPDX-License-Identifier: EPL-2.0
  12  */
  13 package org.openhab.binding.pulseaudio.internal.handler;
  14
  15 import static org.openhab.binding.pulseaudio.internal.PulseaudioBindingConstants.*;
  16
  17 import java.io.IOException;
  18 import java.math.BigDecimal;
  19 import java.util.ArrayList;
  20 import java.util.Collections;
  21 import java.util.Hashtable;
  22 import java.util.List;
  23 import java.util.Map;
  24 import java.util.Set;
  25 import java.util.concurrent.ConcurrentHashMap;
  26 import java.util.concurrent.ScheduledFuture;
  27 import java.util.concurrent.TimeUnit;
  28 import java.util.stream.Collectors;
  29 import java.util.stream.Stream;
  30
  31 import org.eclipse.jdt.annotation.NonNullByDefault;
  32 import org.eclipse.jdt.annotation.Nullable;
  33 import org.openhab.binding.pulseaudio.internal.PulseAudioAudioSink;
  34 import org.openhab.binding.pulseaudio.internal.PulseAudioAudioSource;
  35 import org.openhab.binding.pulseaudio.internal.PulseaudioBindingConstants;
  36 import org.openhab.binding.pulseaudio.internal.items.AbstractAudioDeviceConfig;
  37 import org.openhab.binding.pulseaudio.internal.items.Sink;
  38 import org.openhab.binding.pulseaudio.internal.items.SinkInput;
  39 import org.openhab.binding.pulseaudio.internal.items.Source;
  40 import org.openhab.core.audio.AudioFormat;
  41 import org.openhab.core.audio.AudioSink;
  42 import org.openhab.core.audio.AudioSource;
  43 import org.openhab.core.config.core.Configuration;
  44 import org.openhab.core.library.types.DecimalType;
  45 import org.openhab.core.library.types.IncreaseDecreaseType;
  46 import org.openhab.core.library.types.OnOffType;
  47 import org.openhab.core.library.types.PercentType;
  48 import org.openhab.core.library.types.StringType;
  49 import org.openhab.core.thing.Bridge;
  50 import org.openhab.core.thing.ChannelUID;
  51 import org.openhab.core.thing.Thing;
  52 import org.openhab.core.thing.ThingStatus;
  53 import org.openhab.core.thing.ThingTypeUID;
  54 import org.openhab.core.thing.ThingUID;
  55 import org.openhab.core.thing.binding.BaseThingHandler;
  56 import org.openhab.core.thing.binding.ThingHandler;
  57 import org.openhab.core.types.Command;
  58 import org.openhab.core.types.RefreshType;
  59 import org.openhab.core.types.State;
  60 import org.openhab.core.types.UnDefType;
  61 import org.osgi.framework.BundleContext;
  62 import org.osgi.framework.ServiceRegistration;
  63 import org.slf4j.Logger;
  64 import org.slf4j.LoggerFactory;
  65
  66 /**
  67  * The {@link PulseaudioHandler} is responsible for handling commands, which are
  68  * sent to one of the channels.
  69  *
  70  * @author Tobias Bräutigam - Initial contribution
  71  * @author Miguel Álvarez - Register audio source and refactor
  72  */
  73 @NonNullByDefault
  74 public class PulseaudioHandler extends BaseThingHandler implements DeviceStatusListener {
  75
  76     public static final Set<ThingTypeUID> SUPPORTED_THING_TYPES_UIDS = Collections
  77             .unmodifiableSet(Stream.of(SINK_THING_TYPE, COMBINED_SINK_THING_TYPE, SINK_INPUT_THING_TYPE,
  78                     SOURCE_THING_TYPE, SOURCE_OUTPUT_THING_TYPE).collect(Collectors.toSet()));
  79     private final Logger logger = LoggerFactory.getLogger(PulseaudioHandler.class);
  80     private final int refresh = 60; // refresh every minute as default
  81
  82     private @Nullable PulseaudioBridgeHandler bridgeHandler;
  83     private @Nullable String name;
  84     private @Nullable ScheduledFuture<?> refreshJob;
  85     private @Nullable PulseAudioAudioSink audioSink;
  86     private @Nullable PulseAudioAudioSource audioSource;
  87     private @Nullable Integer savedVolume;
  88
  89     private final Map<String, ServiceRegistration<AudioSink>> audioSinkRegistrations = new ConcurrentHashMap<>();
  90     private final Map<String, ServiceRegistration<AudioSource>> audioSourceRegistrations = new ConcurrentHashMap<>();
  91
  92     private final BundleContext bundleContext;
  93
  94     public PulseaudioHandler(Thing thing, BundleContext bundleContext) {
  95         super(thing);
  96         this.bundleContext = bundleContext;
  97     }
  98
  99     @Override
 100     public void initialize() {
 101         Configuration config = getThing().getConfiguration();
 102         name = (String) config.get(DEVICE_PARAMETER_NAME);
 103
 104         // until we get an update put the Thing offline
 105         updateStatus(ThingStatus.OFFLINE);
 106         deviceOnlineWatchdog();
 107
 108         // if it's a SINK thing, then maybe we have to activate the audio sink
 109         if (PulseaudioBindingConstants.SINK_THING_TYPE.equals(thing.getThingTypeUID())) {
 110             // check the property to see if we it's enabled :
 111             Boolean sinkActivated = (Boolean) thing.getConfiguration()
 112                     .get(PulseaudioBindingConstants.DEVICE_PARAMETER_AUDIO_SINK_ACTIVATION);
 113             if (sinkActivated != null && sinkActivated) {
 114                 audioSinkSetup();
 115             }
 116         }
 117         // if it's a SOURCE thing, then maybe we have to activate the audio source
 118         if (SOURCE_THING_TYPE.equals(thing.getThingTypeUID())) {
 119             // check the property to see if we it's enabled :
 120             Boolean sourceActivated = (Boolean) thing.getConfiguration().get(DEVICE_PARAMETER_AUDIO_SOURCE_ACTIVATION);
 121             if (sourceActivated != null && sourceActivated) {
 122                 audioSourceSetup();
 123             }
 124         }
 125     }
 126
 127     private void audioSinkSetup() {
 128         final PulseaudioHandler thisHandler = this;
 129         scheduler.submit(new Runnable() {
 130             @Override
 131             public void run() {
 132                 // Register the sink as an audio sink in openhab
 133                 logger.trace("Registering an audio sink for pulse audio sink thing {}", thing.getUID());
 134                 PulseAudioAudioSink audioSink = new PulseAudioAudioSink(thisHandler, scheduler);
 135                 setAudioSink(audioSink);
 136                 try {
 137                     audioSink.connectIfNeeded();
 138                 } catch (IOException e) {
 139                     logger.warn("pulseaudio binding cannot connect to the module-simple-protocol-tcp on {} ({})",
 140                             getHost(), e.getMessage());
 141                 } catch (InterruptedException i) {
 142                     logger.info("Interrupted during sink audio connection: {}", i.getMessage());
 143                     return;
 144                 } finally {
 145                     audioSink.scheduleDisconnect();
 146                 }
 147                 @SuppressWarnings("unchecked")
 148                 ServiceRegistration<AudioSink> reg = (ServiceRegistration<AudioSink>) bundleContext
 149                         .registerService(AudioSink.class.getName(), audioSink, new Hashtable<>());
 150                 audioSinkRegistrations.put(thing.getUID().toString(), reg);
 151             }
 152         });
 153     }
 154
 155     private void audioSourceSetup() {
 156         final PulseaudioHandler thisHandler = this;
 157         scheduler.submit(new Runnable() {
 158             @Override
 159             public void run() {
 160                 // Register the source as an audio source in openhab
 161                 logger.trace("Registering an audio source for pulse audio source thing {}", thing.getUID());
 162                 PulseAudioAudioSource audioSource = new PulseAudioAudioSource(thisHandler, scheduler);
 163                 setAudioSource(audioSource);
 164                 try {
 165                     audioSource.connectIfNeeded();
 166                 } catch (IOException e) {
 167                     logger.warn("pulseaudio binding cannot connect to the module-simple-protocol-tcp on {} ({})",
 168                             getHost(), e.getMessage());
 169                 } catch (InterruptedException i) {
 170                     logger.info("Interrupted during source audio connection: {}", i.getMessage());
 171                     return;
 172                 } finally {
 173                     audioSource.scheduleDisconnect();
 174                 }
 175                 @SuppressWarnings("unchecked")
 176                 ServiceRegistration<AudioSource> reg = (ServiceRegistration<AudioSource>) bundleContext
 177                         .registerService(AudioSource.class.getName(), audioSource, new Hashtable<>());
 178                 audioSourceRegistrations.put(thing.getUID().toString(), reg);
 179             }
 180         });
 181     }
 182
 183     @Override
 184     public void dispose() {
 185         if (refreshJob != null && !refreshJob.isCancelled()) {
 186             refreshJob.cancel(true);
 187             refreshJob = null;
 188         }
 189         updateStatus(ThingStatus.OFFLINE);
 190         if (bridgeHandler != null) {
 191             bridgeHandler.unregisterDeviceStatusListener(this);
 192             bridgeHandler = null;
 193         }
 194         logger.trace("Thing {} {} disposed.", getThing().getUID(), name);
 195         super.dispose();
 196         if (audioSink != null) {
 197             audioSink.disconnect();
 198         }
 199         if (audioSource != null) {
 200             audioSource.disconnect();
 201         }
 202         // Unregister the potential pulse audio sink's audio sink
 203         ServiceRegistration<AudioSink> sinkReg = audioSinkRegistrations.remove(getThing().getUID().toString());
 204         if (sinkReg != null) {
 205             logger.trace("Unregistering the audio sync service for pulse audio sink thing {}", getThing().getUID());
 206             sinkReg.unregister();
 207         }
 208         // Unregister the potential pulse audio source's audio sources
 209         ServiceRegistration<AudioSource> sourceReg = audioSourceRegistrations.remove(getThing().getUID().toString());
 210         if (sourceReg != null) {
 211             logger.trace("Unregistering the audio sync service for pulse audio source thing {}", getThing().getUID());
 212             sourceReg.unregister();
 213         }
 214     }
 215
 216     private void deviceOnlineWatchdog() {
 217         Runnable runnable = () -> {
 218             try {
 219                 PulseaudioBridgeHandler bridgeHandler = getPulseaudioBridgeHandler();
 220                 if (bridgeHandler != null) {
 221                     if (bridgeHandler.getDevice(name) == null) {
 222                         updateStatus(ThingStatus.OFFLINE);
 223                         this.bridgeHandler = null;
 224                     } else {
 225                         updateStatus(ThingStatus.ONLINE);
 226                     }
 227                 } else {
 228                     logger.debug("Bridge for pulseaudio device {} not found.", name);
 229                     updateStatus(ThingStatus.OFFLINE);
 230                 }
 231             } catch (Exception e) {
 232                 logger.debug("Exception occurred during execution: {}", e.getMessage(), e);
 233                 this.bridgeHandler = null;
 234             }
 235         };
 236
 237         refreshJob = scheduler.scheduleWithFixedDelay(runnable, 0, refresh, TimeUnit.SECONDS);
 238     }
 239
 240     private synchronized @Nullable PulseaudioBridgeHandler getPulseaudioBridgeHandler() {
 241         if (this.bridgeHandler == null) {
 242             Bridge bridge = getBridge();
 243             if (bridge == null) {
 244                 logger.debug("Required bridge not defined for device {}.", name);
 245                 return null;
 246             }
 247             ThingHandler handler = bridge.getHandler();
 248             if (handler instanceof PulseaudioBridgeHandler) {
 249                 this.bridgeHandler = (PulseaudioBridgeHandler) handler;
 250                 this.bridgeHandler.registerDeviceStatusListener(this);
 251             } else {
 252                 logger.debug("No available bridge handler found for device {} bridge {} .", name, bridge.getUID());
 253                 return null;
 254             }
 255         }
 256         return this.bridgeHandler;
 257     }
 258
 259     @Override
 260     public void handleCommand(ChannelUID channelUID, Command command) {
 261         PulseaudioBridgeHandler bridge = getPulseaudioBridgeHandler();
 262         if (bridge == null) {
 263             logger.warn("pulseaudio server bridge handler not found. Cannot handle command without bridge.");
 264             return;
 265         }
 266         if (command instanceof RefreshType) {
 267             bridge.handleCommand(channelUID, command);
 268             return;
 269         }
 270
 271         AbstractAudioDeviceConfig device = bridge.getDevice(name);
 272         if (device == null) {
 273             logger.warn("device {} not found", name);
 274             updateStatus(ThingStatus.OFFLINE);
 275             bridgeHandler = null;
 276             return;
 277         } else {
 278             State updateState = UnDefType.UNDEF;
 279             if (channelUID.getId().equals(VOLUME_CHANNEL)) {
 280                 if (command instanceof IncreaseDecreaseType) {
 281                     // refresh to get the current volume level
 282                     bridge.getClient().update();
 283                     device = bridge.getDevice(name);
 284                     if (device == null) {
 285                         logger.warn("missing device info, aborting");
 286                         return;
 287                     }
 288                     int oldVolume = device.getVolume();
 289                     int newVolume = oldVolume;
 290                     if (command.equals(IncreaseDecreaseType.INCREASE)) {
 291                         newVolume = Math.min(100, oldVolume + 5);
 292                     }
 293                     if (command.equals(IncreaseDecreaseType.DECREASE)) {
 294                         newVolume = Math.max(0, oldVolume - 5);
 295                     }
 296                     bridge.getClient().setVolumePercent(device, newVolume);
 297                     updateState = new PercentType(newVolume);
 298                     savedVolume = newVolume;
 299                 } else if (command instanceof PercentType) {
 300                     DecimalType volume = (DecimalType) command;
 301                     bridge.getClient().setVolumePercent(device, volume.intValue());
 302                     updateState = (PercentType) command;
 303                     savedVolume = volume.intValue();
 304                 } else if (command instanceof DecimalType) {
 305                     // set volume
 306                     DecimalType volume = (DecimalType) command;
 307                     bridge.getClient().setVolume(device, volume.intValue());
 308                     updateState = (DecimalType) command;
 309                     savedVolume = volume.intValue();
 310                 }
 311             } else if (channelUID.getId().equals(MUTE_CHANNEL)) {
 312                 if (command instanceof OnOffType) {
 313                     bridge.getClient().setMute(device, OnOffType.ON.equals(command));
 314                     updateState = (OnOffType) command;
 315                 }
 316             } else if (channelUID.getId().equals(SLAVES_CHANNEL)) {
 317                 if (device instanceof Sink && ((Sink) device).isCombinedSink()) {
 318                     if (command instanceof StringType) {
 319                         List<Sink> slaves = new ArrayList<>();
 320                         for (String slaveName : command.toString().split(",")) {
 321                             Sink slave = bridge.getClient().getSink(slaveName.trim());
 322                             if (slave != null) {
 323                                 slaves.add(slave);
 324                             }
 325                         }
 326                         if (!slaves.isEmpty()) {
 327                             bridge.getClient().setCombinedSinkSlaves(((Sink) device), slaves);
 328                         }
 329                     }
 330                 } else {
 331                     logger.error("{} is no combined sink", device);
 332                 }
 333             } else if (channelUID.getId().equals(ROUTE_TO_SINK_CHANNEL)) {
 334                 if (device instanceof SinkInput) {
 335                     Sink newSink = null;
 336                     if (command instanceof DecimalType) {
 337                         newSink = bridge.getClient().getSink(((DecimalType) command).intValue());
 338                     } else {
 339                         newSink = bridge.getClient().getSink(command.toString());
 340                     }
 341                     if (newSink != null) {
 342                         logger.debug("rerouting {} to {}", device, newSink);
 343                         bridge.getClient().moveSinkInput(((SinkInput) device), newSink);
 344                         updateState = new StringType(newSink.getPaName());
 345                     } else {
 346                         logger.error("no sink {} found", command.toString());
 347                     }
 348                 }
 349             }
 350             logger.trace("updating {} to {}", channelUID, updateState);
 351             if (!updateState.equals(UnDefType.UNDEF)) {
 352                 updateState(channelUID, updateState);
 353             }
 354         }
 355     }
 356
 357     /**
 358      * Use last checked volume for faster access
 359      *
 360      * @return
 361      */
 362     public int getLastVolume() {
 363         if (savedVolume == null) {
 364             PulseaudioBridgeHandler bridge = getPulseaudioBridgeHandler();
 365             // refresh to get the current volume level
 366             bridge.getClient().update();
 367             AbstractAudioDeviceConfig device = bridge.getDevice(name);
 368             if (device != null) {
 369                 savedVolume = device.getVolume();
 370             }
 371         }
 372         return savedVolume == null ? 50 : savedVolume;
 373     }
 374
 375     public void setVolume(int volume) {
 376         PulseaudioBridgeHandler bridge = getPulseaudioBridgeHandler();
 377         AbstractAudioDeviceConfig device = bridge.getDevice(name);
 378         if (device == null) {
 379             logger.warn("missing device info, aborting");
 380             return;
 381         }
 382         bridge.getClient().setVolumePercent(device, volume);
 383         updateState(VOLUME_CHANNEL, new PercentType(volume));
 384         savedVolume = volume;
 385     }
 386
 387     @Override
 388     public void onDeviceStateChanged(ThingUID bridge, AbstractAudioDeviceConfig device) {
 389         if (device.getPaName().equals(name)) {
 390             updateStatus(ThingStatus.ONLINE);
 391             logger.debug("Updating states of {} id: {}", device, VOLUME_CHANNEL);
 392             savedVolume = device.getVolume();
 393             updateState(VOLUME_CHANNEL, new PercentType(savedVolume));
 394             updateState(MUTE_CHANNEL, device.isMuted() ? OnOffType.ON : OnOffType.OFF);
 395             updateState(STATE_CHANNEL,
 396                     device.getState() != null ? new StringType(device.getState().toString()) : new StringType("-"));
 397             if (device instanceof SinkInput) {
 398                 updateState(ROUTE_TO_SINK_CHANNEL,
 399                         ((SinkInput) device).getSink() != null
 400                                 ? new StringType(((SinkInput) device).getSink().getPaName())
 401                                 : new StringType("-"));
 402             }
 403             if (device instanceof Sink && ((Sink) device).isCombinedSink()) {
 404                 updateState(SLAVES_CHANNEL, new StringType(String.join(",", ((Sink) device).getCombinedSinkNames())));
 405             }
 406         }
 407     }
 408
 409     public String getHost() {
 410         Bridge bridge = getBridge();
 411         if (bridge != null) {
 412             return (String) bridge.getConfiguration().get(PulseaudioBindingConstants.BRIDGE_PARAMETER_HOST);
 413         } else {
 414             logger.error("A bridge must be configured for this pulseaudio thing");
 415             return "null";
 416         }
 417     }
 418
 419     /**
 420      * This method will scan the pulseaudio server to find the port on which the module/sink is listening
 421      * If no module is listening, then it will command the module to load on the pulse audio server,
 422      *
 423      * @return the port on which the pulseaudio server is listening for this sink
 424      * @throws IOException when device info is not available
 425      * @throws InterruptedException when interrupted during the loading module wait
 426      */
 427     public int getSimpleTcpPort() throws IOException, InterruptedException {
 428         var bridgeHandler = getPulseaudioBridgeHandler();
 429         AbstractAudioDeviceConfig device = bridgeHandler.getDevice(name);
 430         if (device == null) {
 431             throw new IOException("missing device info, device appears to be offline");
 432         }
 433         String simpleTcpPortPrefName = (device instanceof Source) ? DEVICE_PARAMETER_AUDIO_SOURCE_PORT
 434                 : DEVICE_PARAMETER_AUDIO_SINK_PORT;
 435         BigDecimal simpleTcpPortPref = ((BigDecimal) getThing().getConfiguration().get(simpleTcpPortPrefName));
 436         int simpleTcpPort = simpleTcpPortPref != null ? simpleTcpPortPref.intValue()
 437                 : MODULE_SIMPLE_PROTOCOL_TCP_DEFAULT_PORT;
 438         String simpleFormat = ((String) getThing().getConfiguration().get(DEVICE_PARAMETER_AUDIO_SOURCE_FORMAT));
 439         BigDecimal simpleRate = (BigDecimal) getThing().getConfiguration().get(DEVICE_PARAMETER_AUDIO_SOURCE_RATE);
 440         BigDecimal simpleChannels = (BigDecimal) getThing().getConfiguration()
 441                 .get(DEVICE_PARAMETER_AUDIO_SOURCE_CHANNELS);
 442         return getPulseaudioBridgeHandler().getClient()
 443                 .loadModuleSimpleProtocolTcpIfNeeded(device, simpleTcpPort, simpleFormat, simpleRate, simpleChannels)
 444                 .orElse(simpleTcpPort);
 445     }
 446
 447     public @Nullable AudioFormat getSourceAudioFormat() {
 448         String simpleFormat = ((String) getThing().getConfiguration().get(DEVICE_PARAMETER_AUDIO_SOURCE_FORMAT));
 449         BigDecimal simpleRate = ((BigDecimal) getThing().getConfiguration().get(DEVICE_PARAMETER_AUDIO_SOURCE_RATE));
 450         BigDecimal simpleChannels = ((BigDecimal) getThing().getConfiguration()
 451                 .get(DEVICE_PARAMETER_AUDIO_SOURCE_CHANNELS));
 452         if (simpleFormat == null || simpleRate == null || simpleChannels == null) {
 453             return null;
 454         }
 455         switch (simpleFormat) {
 456             case "u8":
 457                 return new AudioFormat(AudioFormat.CONTAINER_WAVE, AudioFormat.CODEC_PCM_SIGNED, null, 8, 1,
 458                         simpleRate.longValue(), simpleChannels.intValue());
 459             case "s16le":
 460                 return new AudioFormat(AudioFormat.CONTAINER_WAVE, AudioFormat.CODEC_PCM_SIGNED, false, 16, 1,
 461                         simpleRate.longValue(), simpleChannels.intValue());
 462             case "s16be":
 463                 return new AudioFormat(AudioFormat.CONTAINER_WAVE, AudioFormat.CODEC_PCM_SIGNED, true, 16, 1,
 464                         simpleRate.longValue(), simpleChannels.intValue());
 465             case "s24le":
 466                 return new AudioFormat(AudioFormat.CONTAINER_WAVE, AudioFormat.CODEC_PCM_UNSIGNED, false, 24, 1,
 467                         simpleRate.longValue(), simpleChannels.intValue());
 468             case "s24be":
 469                 return new AudioFormat(AudioFormat.CONTAINER_WAVE, AudioFormat.CODEC_PCM_UNSIGNED, true, 24, 1,
 470                         simpleRate.longValue(), simpleChannels.intValue());
 471             case "s32le":
 472                 return new AudioFormat(AudioFormat.CONTAINER_WAVE, AudioFormat.CODEC_PCM_UNSIGNED, false, 32, 1,
 473                         simpleRate.longValue(), simpleChannels.intValue());
 474             case "s32be":
 475                 return new AudioFormat(AudioFormat.CONTAINER_WAVE, AudioFormat.CODEC_PCM_UNSIGNED, true, 32, 1,
 476                         simpleRate.longValue(), simpleChannels.intValue());
 477             default:
 478                 logger.warn("unsupported format {}", simpleFormat);
 479                 return null;
 480         }
 481     }
 482
 483     public int getIdleTimeout() {
 484         var handler = getPulseaudioBridgeHandler();
 485         if (handler == null) {
 486             return 30000;
 487         }
 488         AbstractAudioDeviceConfig device = handler.getDevice(name);
 489         String idleTimeoutPropName = (device instanceof Source) ? DEVICE_PARAMETER_AUDIO_SOURCE_IDLE_TIMEOUT
 490                 : DEVICE_PARAMETER_AUDIO_SINK_IDLE_TIMEOUT;
 491         var idleTimeout = (BigDecimal) getThing().getConfiguration().get(idleTimeoutPropName);
 492         return idleTimeout != null ? idleTimeout.intValue() : 30000;
 493     }
 494
 495     public int getBasicProtocolSOTimeout() {
 496         var soTimeout = (BigDecimal) getThing().getConfiguration().get(DEVICE_PARAMETER_AUDIO_SOCKET_SO_TIMEOUT);
 497         return soTimeout != null ? soTimeout.intValue() : 500;
 498     }
 499
 500     @Override
 501     public void onDeviceRemoved(PulseaudioBridgeHandler bridge, AbstractAudioDeviceConfig device) {
 502         if (device.getPaName().equals(name)) {
 503             bridgeHandler.unregisterDeviceStatusListener(this);
 504             bridgeHandler = null;
 505             audioSink.disconnect();
 506             audioSink = null;
 507             updateStatus(ThingStatus.OFFLINE);
 508         }
 509     }
 510
 511     @Override
 512     public void onDeviceAdded(Bridge bridge, AbstractAudioDeviceConfig device) {
 513         logger.trace("new device discovered {} by {}", device, bridge);
 514     }
 515
 516     public void setAudioSink(PulseAudioAudioSink audioSink) {
 517         this.audioSink = audioSink;
 518     }
 519
 520     public void setAudioSource(PulseAudioAudioSource audioSource) {
 521         this.audioSource = audioSource;
 522     }
 523 }