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163,900
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/MetadataCache.java
MetadataCache.findTrackIdAtOffset
private static int findTrackIdAtOffset(SlotReference slot, Client client, int offset) throws IOException { Message entry = client.renderMenuItems(Message.MenuIdentifier.MAIN_MENU, slot.slot, CdjStatus.TrackType.REKORDBOX, offset, 1).get(0); if (entry.getMenuItemType() == Message.MenuItemType.UNKNOWN) { logger.warn("Encountered unrecognized track list entry item type: {}", entry); } return (int)((NumberField)entry.arguments.get(1)).getValue(); }
java
private static int findTrackIdAtOffset(SlotReference slot, Client client, int offset) throws IOException { Message entry = client.renderMenuItems(Message.MenuIdentifier.MAIN_MENU, slot.slot, CdjStatus.TrackType.REKORDBOX, offset, 1).get(0); if (entry.getMenuItemType() == Message.MenuItemType.UNKNOWN) { logger.warn("Encountered unrecognized track list entry item type: {}", entry); } return (int)((NumberField)entry.arguments.get(1)).getValue(); }
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As part of checking whether a metadata cache can be auto-mounted for a particular media slot, this method looks up the track at the specified offset within the player's track list, and returns its rekordbox ID. @param slot the slot being considered for auto-attaching a metadata cache @param client the connection to the database server on the player holding that slot @param offset an index into the list of all tracks present in the slot @throws IOException if there is a problem communicating with the player
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/MetadataCache.java#L1036-L1042
163,901
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/BeatFinder.java
BeatFinder.isPacketLongEnough
private boolean isPacketLongEnough(DatagramPacket packet, int expectedLength, String name) { final int length = packet.getLength(); if (length < expectedLength) { logger.warn("Ignoring too-short " + name + " packet; expecting " + expectedLength + " bytes and got " + length + "."); return false; } if (length > expectedLength) { logger.warn("Processing too-long " + name + " packet; expecting " + expectedLength + " bytes and got " + length + "."); } return true; }
java
private boolean isPacketLongEnough(DatagramPacket packet, int expectedLength, String name) { final int length = packet.getLength(); if (length < expectedLength) { logger.warn("Ignoring too-short " + name + " packet; expecting " + expectedLength + " bytes and got " + length + "."); return false; } if (length > expectedLength) { logger.warn("Processing too-long " + name + " packet; expecting " + expectedLength + " bytes and got " + length + "."); } return true; }
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Helper method to check that we got the right size packet. @param packet a packet that has been received @param expectedLength the number of bytes we expect it to contain @param name the description of the packet in case we need to report issues with the length @return {@code true} if enough bytes were received to process the packet
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/BeatFinder.java#L72-L86
163,902
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/BeatFinder.java
BeatFinder.stop
public synchronized void stop() { if (isRunning()) { socket.get().close(); socket.set(null); deliverLifecycleAnnouncement(logger, false); } }
java
public synchronized void stop() { if (isRunning()) { socket.get().close(); socket.set(null); deliverLifecycleAnnouncement(logger, false); } }
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Stop listening for beats.
[ "Stop", "listening", "for", "beats", "." ]
f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/BeatFinder.java#L212-L218
163,903
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/BeatFinder.java
BeatFinder.deliverSyncCommand
private void deliverSyncCommand(byte command) { for (final SyncListener listener : getSyncListeners()) { try { switch (command) { case 0x01: listener.becomeMaster(); case 0x10: listener.setSyncMode(true); break; case 0x20: listener.setSyncMode(false); break; } } catch (Throwable t) { logger.warn("Problem delivering sync command to listener", t); } } }
java
private void deliverSyncCommand(byte command) { for (final SyncListener listener : getSyncListeners()) { try { switch (command) { case 0x01: listener.becomeMaster(); case 0x10: listener.setSyncMode(true); break; case 0x20: listener.setSyncMode(false); break; } } catch (Throwable t) { logger.warn("Problem delivering sync command to listener", t); } } }
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Send a sync command to all registered listeners. @param command the byte which identifies the type of sync command we received
[ "Send", "a", "sync", "command", "to", "all", "registered", "listeners", "." ]
f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/BeatFinder.java#L344-L365
163,904
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/BeatFinder.java
BeatFinder.deliverMasterYieldCommand
private void deliverMasterYieldCommand(int toPlayer) { for (final MasterHandoffListener listener : getMasterHandoffListeners()) { try { listener.yieldMasterTo(toPlayer); } catch (Throwable t) { logger.warn("Problem delivering master yield command to listener", t); } } }
java
private void deliverMasterYieldCommand(int toPlayer) { for (final MasterHandoffListener listener : getMasterHandoffListeners()) { try { listener.yieldMasterTo(toPlayer); } catch (Throwable t) { logger.warn("Problem delivering master yield command to listener", t); } } }
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Send a master handoff yield command to all registered listeners. @param toPlayer the device number to which we are being instructed to yield the tempo master role
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/BeatFinder.java#L423-L431
163,905
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/BeatFinder.java
BeatFinder.deliverMasterYieldResponse
private void deliverMasterYieldResponse(int fromPlayer, boolean yielded) { for (final MasterHandoffListener listener : getMasterHandoffListeners()) { try { listener.yieldResponse(fromPlayer, yielded); } catch (Throwable t) { logger.warn("Problem delivering master yield response to listener", t); } } }
java
private void deliverMasterYieldResponse(int fromPlayer, boolean yielded) { for (final MasterHandoffListener listener : getMasterHandoffListeners()) { try { listener.yieldResponse(fromPlayer, yielded); } catch (Throwable t) { logger.warn("Problem delivering master yield response to listener", t); } } }
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Send a master handoff yield response to all registered listeners. @param fromPlayer the device number that is responding to our request that it yield the tempo master role to us @param yielded will be {@code true} if we should now be the tempo master
[ "Send", "a", "master", "handoff", "yield", "response", "to", "all", "registered", "listeners", "." ]
f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/BeatFinder.java#L439-L447
163,906
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/BeatFinder.java
BeatFinder.deliverOnAirUpdate
private void deliverOnAirUpdate(Set<Integer> audibleChannels) { for (final OnAirListener listener : getOnAirListeners()) { try { listener.channelsOnAir(audibleChannels); } catch (Throwable t) { logger.warn("Problem delivering channels on-air update to listener", t); } } }
java
private void deliverOnAirUpdate(Set<Integer> audibleChannels) { for (final OnAirListener listener : getOnAirListeners()) { try { listener.channelsOnAir(audibleChannels); } catch (Throwable t) { logger.warn("Problem delivering channels on-air update to listener", t); } } }
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Send a channels on-air update to all registered listeners. @param audibleChannels holds the device numbers of all channels that can currently be heard in the mixer output
[ "Send", "a", "channels", "on", "-", "air", "update", "to", "all", "registered", "listeners", "." ]
f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/BeatFinder.java#L505-L513
163,907
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/BeatFinder.java
BeatFinder.deliverFaderStartCommand
private void deliverFaderStartCommand(Set<Integer> playersToStart, Set<Integer> playersToStop) { for (final FaderStartListener listener : getFaderStartListeners()) { try { listener.fadersChanged(playersToStart, playersToStop); } catch (Throwable t) { logger.warn("Problem delivering fader start command to listener", t); } } }
java
private void deliverFaderStartCommand(Set<Integer> playersToStart, Set<Integer> playersToStop) { for (final FaderStartListener listener : getFaderStartListeners()) { try { listener.fadersChanged(playersToStart, playersToStop); } catch (Throwable t) { logger.warn("Problem delivering fader start command to listener", t); } } }
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Send a fader start command to all registered listeners. @param playersToStart contains the device numbers of all players that should start playing @param playersToStop contains the device numbers of all players that should stop playing
[ "Send", "a", "fader", "start", "command", "to", "all", "registered", "listeners", "." ]
f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/BeatFinder.java#L572-L580
163,908
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/dbserver/Message.java
Message.write
public void write(WritableByteChannel channel) throws IOException { logger.debug("Writing> {}", this); for (Field field : fields) { field.write(channel); } }
java
public void write(WritableByteChannel channel) throws IOException { logger.debug("Writing> {}", this); for (Field field : fields) { field.write(channel); } }
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Writes the message to the specified channel, for example when creating metadata cache files. @param channel the channel to which it should be written @throws IOException if there is a problem writing to the channel
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/dbserver/Message.java#L1068-L1073
163,909
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/WaveformFinder.java
WaveformFinder.setFindDetails
public final void setFindDetails(boolean findDetails) { this.findDetails.set(findDetails); if (findDetails) { primeCache(); // Get details for any tracks that were already loaded on players. } else { // Inform our listeners, on the proper thread, that the detailed waveforms are no longer available final Set<DeckReference> dyingCache = new HashSet<DeckReference>(detailHotCache.keySet()); detailHotCache.clear(); SwingUtilities.invokeLater(new Runnable() { @Override public void run() { for (DeckReference deck : dyingCache) { deliverWaveformDetailUpdate(deck.player, null); } } }); } }
java
public final void setFindDetails(boolean findDetails) { this.findDetails.set(findDetails); if (findDetails) { primeCache(); // Get details for any tracks that were already loaded on players. } else { // Inform our listeners, on the proper thread, that the detailed waveforms are no longer available final Set<DeckReference> dyingCache = new HashSet<DeckReference>(detailHotCache.keySet()); detailHotCache.clear(); SwingUtilities.invokeLater(new Runnable() { @Override public void run() { for (DeckReference deck : dyingCache) { deliverWaveformDetailUpdate(deck.player, null); } } }); } }
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Set whether we should retrieve the waveform details in addition to the waveform previews. @param findDetails if {@code true}, both types of waveform will be retrieved, if {@code false} only previews will be retrieved
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/WaveformFinder.java#L57-L74
163,910
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/WaveformFinder.java
WaveformFinder.setColorPreferred
public final void setColorPreferred(boolean preferColor) { if (this.preferColor.compareAndSet(!preferColor, preferColor) && isRunning()) { stop(); try { start(); } catch (Exception e) { logger.error("Unexplained exception restarting; we had been running already!", e); } } }
java
public final void setColorPreferred(boolean preferColor) { if (this.preferColor.compareAndSet(!preferColor, preferColor) && isRunning()) { stop(); try { start(); } catch (Exception e) { logger.error("Unexplained exception restarting; we had been running already!", e); } } }
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Set whether we should obtain color versions of waveforms and previews when they are available. This will only affect waveforms loaded after the setting has been changed. If this changes the setting, and we were running, stop and restart in order to flush and reload the correct waveform versions. @param preferColor if {@code true}, the full-color versions of waveforms will be requested, if {@code false} only the older blue versions will be retrieved
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/WaveformFinder.java#L100-L109
163,911
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/WaveformFinder.java
WaveformFinder.clearDeckPreview
private void clearDeckPreview(TrackMetadataUpdate update) { if (previewHotCache.remove(DeckReference.getDeckReference(update.player, 0)) != null) { deliverWaveformPreviewUpdate(update.player, null); } }
java
private void clearDeckPreview(TrackMetadataUpdate update) { if (previewHotCache.remove(DeckReference.getDeckReference(update.player, 0)) != null) { deliverWaveformPreviewUpdate(update.player, null); } }
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We have received an update that invalidates the waveform preview for a player, so clear it and alert any listeners if this represents a change. This does not affect the hot cues; they will stick around until the player loads a new track that overwrites one or more of them. @param update the update which means we have no waveform preview for the associated player
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/WaveformFinder.java#L219-L223
163,912
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/WaveformFinder.java
WaveformFinder.clearDeckDetail
private void clearDeckDetail(TrackMetadataUpdate update) { if (detailHotCache.remove(DeckReference.getDeckReference(update.player, 0)) != null) { deliverWaveformDetailUpdate(update.player, null); } }
java
private void clearDeckDetail(TrackMetadataUpdate update) { if (detailHotCache.remove(DeckReference.getDeckReference(update.player, 0)) != null) { deliverWaveformDetailUpdate(update.player, null); } }
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We have received an update that invalidates the waveform detail for a player, so clear it and alert any listeners if this represents a change. This does not affect the hot cues; they will stick around until the player loads a new track that overwrites one or more of them. @param update the update which means we have no waveform preview for the associated player
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/WaveformFinder.java#L232-L236
163,913
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/WaveformFinder.java
WaveformFinder.clearWaveforms
private void clearWaveforms(DeviceAnnouncement announcement) { final int player = announcement.getNumber(); // Iterate over a copy to avoid concurrent modification issues for (DeckReference deck : new HashSet<DeckReference>(previewHotCache.keySet())) { if (deck.player == player) { previewHotCache.remove(deck); if (deck.hotCue == 0) { deliverWaveformPreviewUpdate(player, null); // Inform listeners that preview is gone. } } } // Again iterate over a copy to avoid concurrent modification issues for (DeckReference deck : new HashSet<DeckReference>(detailHotCache.keySet())) { if (deck.player == player) { detailHotCache.remove(deck); if (deck.hotCue == 0) { deliverWaveformDetailUpdate(player, null); // Inform listeners that detail is gone. } } } }
java
private void clearWaveforms(DeviceAnnouncement announcement) { final int player = announcement.getNumber(); // Iterate over a copy to avoid concurrent modification issues for (DeckReference deck : new HashSet<DeckReference>(previewHotCache.keySet())) { if (deck.player == player) { previewHotCache.remove(deck); if (deck.hotCue == 0) { deliverWaveformPreviewUpdate(player, null); // Inform listeners that preview is gone. } } } // Again iterate over a copy to avoid concurrent modification issues for (DeckReference deck : new HashSet<DeckReference>(detailHotCache.keySet())) { if (deck.player == player) { detailHotCache.remove(deck); if (deck.hotCue == 0) { deliverWaveformDetailUpdate(player, null); // Inform listeners that detail is gone. } } } }
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We have received notification that a device is no longer on the network, so clear out all its waveforms. @param announcement the packet which reported the device’s disappearance
[ "We", "have", "received", "notification", "that", "a", "device", "is", "no", "longer", "on", "the", "network", "so", "clear", "out", "all", "its", "waveforms", "." ]
f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/WaveformFinder.java#L255-L275
163,914
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/WaveformFinder.java
WaveformFinder.updatePreview
private void updatePreview(TrackMetadataUpdate update, WaveformPreview preview) { previewHotCache.put(DeckReference.getDeckReference(update.player, 0), preview); // Main deck if (update.metadata.getCueList() != null) { // Update the cache with any hot cues in this track as well for (CueList.Entry entry : update.metadata.getCueList().entries) { if (entry.hotCueNumber != 0) { previewHotCache.put(DeckReference.getDeckReference(update.player, entry.hotCueNumber), preview); } } } deliverWaveformPreviewUpdate(update.player, preview); }
java
private void updatePreview(TrackMetadataUpdate update, WaveformPreview preview) { previewHotCache.put(DeckReference.getDeckReference(update.player, 0), preview); // Main deck if (update.metadata.getCueList() != null) { // Update the cache with any hot cues in this track as well for (CueList.Entry entry : update.metadata.getCueList().entries) { if (entry.hotCueNumber != 0) { previewHotCache.put(DeckReference.getDeckReference(update.player, entry.hotCueNumber), preview); } } } deliverWaveformPreviewUpdate(update.player, preview); }
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We have obtained a waveform preview for a device, so store it and alert any listeners. @param update the update which caused us to retrieve this waveform preview @param preview the waveform preview which we retrieved
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/WaveformFinder.java#L283-L293
163,915
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/WaveformFinder.java
WaveformFinder.updateDetail
private void updateDetail(TrackMetadataUpdate update, WaveformDetail detail) { detailHotCache.put(DeckReference.getDeckReference(update.player, 0), detail); // Main deck if (update.metadata.getCueList() != null) { // Update the cache with any hot cues in this track as well for (CueList.Entry entry : update.metadata.getCueList().entries) { if (entry.hotCueNumber != 0) { detailHotCache.put(DeckReference.getDeckReference(update.player, entry.hotCueNumber), detail); } } } deliverWaveformDetailUpdate(update.player, detail); }
java
private void updateDetail(TrackMetadataUpdate update, WaveformDetail detail) { detailHotCache.put(DeckReference.getDeckReference(update.player, 0), detail); // Main deck if (update.metadata.getCueList() != null) { // Update the cache with any hot cues in this track as well for (CueList.Entry entry : update.metadata.getCueList().entries) { if (entry.hotCueNumber != 0) { detailHotCache.put(DeckReference.getDeckReference(update.player, entry.hotCueNumber), detail); } } } deliverWaveformDetailUpdate(update.player, detail); }
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We have obtained waveform detail for a device, so store it and alert any listeners. @param update the update which caused us to retrieve this waveform detail @param detail the waveform detail which we retrieved
[ "We", "have", "obtained", "waveform", "detail", "for", "a", "device", "so", "store", "it", "and", "alert", "any", "listeners", "." ]
f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/WaveformFinder.java#L301-L311
163,916
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/WaveformFinder.java
WaveformFinder.getLoadedPreviews
@SuppressWarnings("WeakerAccess") public Map<DeckReference, WaveformPreview> getLoadedPreviews() { ensureRunning(); // Make a copy so callers get an immutable snapshot of the current state. return Collections.unmodifiableMap(new HashMap<DeckReference, WaveformPreview>(previewHotCache)); }
java
@SuppressWarnings("WeakerAccess") public Map<DeckReference, WaveformPreview> getLoadedPreviews() { ensureRunning(); // Make a copy so callers get an immutable snapshot of the current state. return Collections.unmodifiableMap(new HashMap<DeckReference, WaveformPreview>(previewHotCache)); }
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Get the waveform previews available for all tracks currently loaded in any player, either on the play deck, or in a hot cue. @return the previews associated with all current players, including for any tracks loaded in their hot cue slots @throws IllegalStateException if the WaveformFinder is not running
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/WaveformFinder.java#L321-L326
163,917
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/WaveformFinder.java
WaveformFinder.getLoadedDetails
@SuppressWarnings("WeakerAccess") public Map<DeckReference, WaveformDetail> getLoadedDetails() { ensureRunning(); if (!isFindingDetails()) { throw new IllegalStateException("WaveformFinder is not configured to find waveform details."); } // Make a copy so callers get an immutable snapshot of the current state. return Collections.unmodifiableMap(new HashMap<DeckReference, WaveformDetail>(detailHotCache)); }
java
@SuppressWarnings("WeakerAccess") public Map<DeckReference, WaveformDetail> getLoadedDetails() { ensureRunning(); if (!isFindingDetails()) { throw new IllegalStateException("WaveformFinder is not configured to find waveform details."); } // Make a copy so callers get an immutable snapshot of the current state. return Collections.unmodifiableMap(new HashMap<DeckReference, WaveformDetail>(detailHotCache)); }
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Get the waveform details available for all tracks currently loaded in any player, either on the play deck, or in a hot cue. @return the details associated with all current players, including for any tracks loaded in their hot cue slots @throws IllegalStateException if the WaveformFinder is not running or requesting waveform details
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/WaveformFinder.java#L336-L344
163,918
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/WaveformFinder.java
WaveformFinder.requestPreviewInternal
private WaveformPreview requestPreviewInternal(final DataReference trackReference, final boolean failIfPassive) { // First check if we are using cached data for this slot MetadataCache cache = MetadataFinder.getInstance().getMetadataCache(SlotReference.getSlotReference(trackReference)); if (cache != null) { return cache.getWaveformPreview(null, trackReference); } // Then see if any registered metadata providers can offer it for us. final MediaDetails sourceDetails = MetadataFinder.getInstance().getMediaDetailsFor(trackReference.getSlotReference()); if (sourceDetails != null) { final WaveformPreview provided = MetadataFinder.getInstance().allMetadataProviders.getWaveformPreview(sourceDetails, trackReference); if (provided != null) { return provided; } } // At this point, unless we are allowed to actively request the data, we are done. We can always actively // request tracks from rekordbox. if (MetadataFinder.getInstance().isPassive() && failIfPassive && trackReference.slot != CdjStatus.TrackSourceSlot.COLLECTION) { return null; } // We have to actually request the preview using the dbserver protocol. ConnectionManager.ClientTask<WaveformPreview> task = new ConnectionManager.ClientTask<WaveformPreview>() { @Override public WaveformPreview useClient(Client client) throws Exception { return getWaveformPreview(trackReference.rekordboxId, SlotReference.getSlotReference(trackReference), client); } }; try { return ConnectionManager.getInstance().invokeWithClientSession(trackReference.player, task, "requesting waveform preview"); } catch (Exception e) { logger.error("Problem requesting waveform preview, returning null", e); } return null; }
java
private WaveformPreview requestPreviewInternal(final DataReference trackReference, final boolean failIfPassive) { // First check if we are using cached data for this slot MetadataCache cache = MetadataFinder.getInstance().getMetadataCache(SlotReference.getSlotReference(trackReference)); if (cache != null) { return cache.getWaveformPreview(null, trackReference); } // Then see if any registered metadata providers can offer it for us. final MediaDetails sourceDetails = MetadataFinder.getInstance().getMediaDetailsFor(trackReference.getSlotReference()); if (sourceDetails != null) { final WaveformPreview provided = MetadataFinder.getInstance().allMetadataProviders.getWaveformPreview(sourceDetails, trackReference); if (provided != null) { return provided; } } // At this point, unless we are allowed to actively request the data, we are done. We can always actively // request tracks from rekordbox. if (MetadataFinder.getInstance().isPassive() && failIfPassive && trackReference.slot != CdjStatus.TrackSourceSlot.COLLECTION) { return null; } // We have to actually request the preview using the dbserver protocol. ConnectionManager.ClientTask<WaveformPreview> task = new ConnectionManager.ClientTask<WaveformPreview>() { @Override public WaveformPreview useClient(Client client) throws Exception { return getWaveformPreview(trackReference.rekordboxId, SlotReference.getSlotReference(trackReference), client); } }; try { return ConnectionManager.getInstance().invokeWithClientSession(trackReference.player, task, "requesting waveform preview"); } catch (Exception e) { logger.error("Problem requesting waveform preview, returning null", e); } return null; }
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Ask the specified player for the waveform preview in the specified slot with the specified rekordbox ID, using cached media instead if it is available, and possibly giving up if we are in passive mode. @param trackReference uniquely identifies the desired waveform preview @param failIfPassive will prevent the request from taking place if we are in passive mode, so that automatic waveform updates will use available caches only @return the waveform preview found, if any
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/WaveformFinder.java#L410-L447
163,919
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/WaveformFinder.java
WaveformFinder.requestWaveformPreviewFrom
public WaveformPreview requestWaveformPreviewFrom(final DataReference dataReference) { ensureRunning(); for (WaveformPreview cached : previewHotCache.values()) { if (cached.dataReference.equals(dataReference)) { // Found a hot cue hit, use it. return cached; } } return requestPreviewInternal(dataReference, false); }
java
public WaveformPreview requestWaveformPreviewFrom(final DataReference dataReference) { ensureRunning(); for (WaveformPreview cached : previewHotCache.values()) { if (cached.dataReference.equals(dataReference)) { // Found a hot cue hit, use it. return cached; } } return requestPreviewInternal(dataReference, false); }
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Ask the specified player for the specified waveform preview from the specified media slot, first checking if we have a cached copy. @param dataReference uniquely identifies the desired waveform preview @return the preview, if it was found, or {@code null} @throws IllegalStateException if the WaveformFinder is not running
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/WaveformFinder.java#L459-L467
163,920
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/WaveformFinder.java
WaveformFinder.getWaveformPreview
WaveformPreview getWaveformPreview(int rekordboxId, SlotReference slot, Client client) throws IOException { final NumberField idField = new NumberField(rekordboxId); // First try to get the NXS2-style color waveform if we are supposed to. if (preferColor.get()) { try { Message response = client.simpleRequest(Message.KnownType.ANLZ_TAG_REQ, Message.KnownType.ANLZ_TAG, client.buildRMST(Message.MenuIdentifier.MAIN_MENU, slot.slot), idField, new NumberField(Message.ANLZ_FILE_TAG_COLOR_WAVEFORM_PREVIEW), new NumberField(Message.ALNZ_FILE_TYPE_EXT)); return new WaveformPreview(new DataReference(slot, rekordboxId), response); } catch (Exception e) { logger.info("No color waveform preview available for slot " + slot + ", id " + rekordboxId + "; requesting blue version.", e); } } Message response = client.simpleRequest(Message.KnownType.WAVE_PREVIEW_REQ, Message.KnownType.WAVE_PREVIEW, client.buildRMST(Message.MenuIdentifier.DATA, slot.slot), NumberField.WORD_1, idField, NumberField.WORD_0); return new WaveformPreview(new DataReference(slot, rekordboxId), response); }
java
WaveformPreview getWaveformPreview(int rekordboxId, SlotReference slot, Client client) throws IOException { final NumberField idField = new NumberField(rekordboxId); // First try to get the NXS2-style color waveform if we are supposed to. if (preferColor.get()) { try { Message response = client.simpleRequest(Message.KnownType.ANLZ_TAG_REQ, Message.KnownType.ANLZ_TAG, client.buildRMST(Message.MenuIdentifier.MAIN_MENU, slot.slot), idField, new NumberField(Message.ANLZ_FILE_TAG_COLOR_WAVEFORM_PREVIEW), new NumberField(Message.ALNZ_FILE_TYPE_EXT)); return new WaveformPreview(new DataReference(slot, rekordboxId), response); } catch (Exception e) { logger.info("No color waveform preview available for slot " + slot + ", id " + rekordboxId + "; requesting blue version.", e); } } Message response = client.simpleRequest(Message.KnownType.WAVE_PREVIEW_REQ, Message.KnownType.WAVE_PREVIEW, client.buildRMST(Message.MenuIdentifier.DATA, slot.slot), NumberField.WORD_1, idField, NumberField.WORD_0); return new WaveformPreview(new DataReference(slot, rekordboxId), response); }
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Requests the waveform preview for a specific track ID, given a connection to a player that has already been set up. @param rekordboxId the track whose waveform preview is desired @param slot identifies the media slot we are querying @param client the dbserver client that is communicating with the appropriate player @return the retrieved waveform preview, or {@code null} if none was available @throws IOException if there is a communication problem
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/WaveformFinder.java#L480-L502
163,921
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/WaveformFinder.java
WaveformFinder.requestWaveformDetailFrom
public WaveformDetail requestWaveformDetailFrom(final DataReference dataReference) { ensureRunning(); for (WaveformDetail cached : detailHotCache.values()) { if (cached.dataReference.equals(dataReference)) { // Found a hot cue hit, use it. return cached; } } return requestDetailInternal(dataReference, false); }
java
public WaveformDetail requestWaveformDetailFrom(final DataReference dataReference) { ensureRunning(); for (WaveformDetail cached : detailHotCache.values()) { if (cached.dataReference.equals(dataReference)) { // Found a hot cue hit, use it. return cached; } } return requestDetailInternal(dataReference, false); }
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Ask the specified player for the specified waveform detail from the specified media slot, first checking if we have a cached copy. @param dataReference uniquely identifies the desired waveform detail @return the waveform detail, if it was found, or {@code null} @throws IllegalStateException if the WaveformFinder is not running
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/WaveformFinder.java#L563-L571
163,922
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/WaveformFinder.java
WaveformFinder.getWaveformDetail
WaveformDetail getWaveformDetail(int rekordboxId, SlotReference slot, Client client) throws IOException { final NumberField idField = new NumberField(rekordboxId); // First try to get the NXS2-style color waveform if we are supposed to. if (preferColor.get()) { try { Message response = client.simpleRequest(Message.KnownType.ANLZ_TAG_REQ, Message.KnownType.ANLZ_TAG, client.buildRMST(Message.MenuIdentifier.MAIN_MENU, slot.slot), idField, new NumberField(Message.ANLZ_FILE_TAG_COLOR_WAVEFORM_DETAIL), new NumberField(Message.ALNZ_FILE_TYPE_EXT)); return new WaveformDetail(new DataReference(slot, rekordboxId), response); } catch (Exception e) { logger.info("No color waveform available for slot " + slot + ", id " + rekordboxId + "; requesting blue version.", e); } } Message response = client.simpleRequest(Message.KnownType.WAVE_DETAIL_REQ, Message.KnownType.WAVE_DETAIL, client.buildRMST(Message.MenuIdentifier.MAIN_MENU, slot.slot), idField, NumberField.WORD_0); return new WaveformDetail(new DataReference(slot, rekordboxId), response); }
java
WaveformDetail getWaveformDetail(int rekordboxId, SlotReference slot, Client client) throws IOException { final NumberField idField = new NumberField(rekordboxId); // First try to get the NXS2-style color waveform if we are supposed to. if (preferColor.get()) { try { Message response = client.simpleRequest(Message.KnownType.ANLZ_TAG_REQ, Message.KnownType.ANLZ_TAG, client.buildRMST(Message.MenuIdentifier.MAIN_MENU, slot.slot), idField, new NumberField(Message.ANLZ_FILE_TAG_COLOR_WAVEFORM_DETAIL), new NumberField(Message.ALNZ_FILE_TYPE_EXT)); return new WaveformDetail(new DataReference(slot, rekordboxId), response); } catch (Exception e) { logger.info("No color waveform available for slot " + slot + ", id " + rekordboxId + "; requesting blue version.", e); } } Message response = client.simpleRequest(Message.KnownType.WAVE_DETAIL_REQ, Message.KnownType.WAVE_DETAIL, client.buildRMST(Message.MenuIdentifier.MAIN_MENU, slot.slot), idField, NumberField.WORD_0); return new WaveformDetail(new DataReference(slot, rekordboxId), response); }
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Requests the waveform detail for a specific track ID, given a connection to a player that has already been set up. @param rekordboxId the track whose waveform detail is desired @param slot identifies the media slot we are querying @param client the dbserver client that is communicating with the appropriate player @return the retrieved waveform detail, or {@code null} if none was available @throws IOException if there is a communication problem
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/WaveformFinder.java#L584-L603
163,923
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/WaveformFinder.java
WaveformFinder.deliverWaveformPreviewUpdate
private void deliverWaveformPreviewUpdate(final int player, final WaveformPreview preview) { final Set<WaveformListener> listeners = getWaveformListeners(); if (!listeners.isEmpty()) { SwingUtilities.invokeLater(new Runnable() { @Override public void run() { final WaveformPreviewUpdate update = new WaveformPreviewUpdate(player, preview); for (final WaveformListener listener : listeners) { try { listener.previewChanged(update); } catch (Throwable t) { logger.warn("Problem delivering waveform preview update to listener", t); } } } }); } }
java
private void deliverWaveformPreviewUpdate(final int player, final WaveformPreview preview) { final Set<WaveformListener> listeners = getWaveformListeners(); if (!listeners.isEmpty()) { SwingUtilities.invokeLater(new Runnable() { @Override public void run() { final WaveformPreviewUpdate update = new WaveformPreviewUpdate(player, preview); for (final WaveformListener listener : listeners) { try { listener.previewChanged(update); } catch (Throwable t) { logger.warn("Problem delivering waveform preview update to listener", t); } } } }); } }
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Send a waveform preview update announcement to all registered listeners. @param player the player whose waveform preview has changed @param preview the new waveform preview, if any
[ "Send", "a", "waveform", "preview", "update", "announcement", "to", "all", "registered", "listeners", "." ]
f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/WaveformFinder.java#L671-L689
163,924
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/WaveformFinder.java
WaveformFinder.deliverWaveformDetailUpdate
private void deliverWaveformDetailUpdate(final int player, final WaveformDetail detail) { if (!getWaveformListeners().isEmpty()) { SwingUtilities.invokeLater(new Runnable() { @Override public void run() { final WaveformDetailUpdate update = new WaveformDetailUpdate(player, detail); for (final WaveformListener listener : getWaveformListeners()) { try { listener.detailChanged(update); } catch (Throwable t) { logger.warn("Problem delivering waveform detail update to listener", t); } } } }); } }
java
private void deliverWaveformDetailUpdate(final int player, final WaveformDetail detail) { if (!getWaveformListeners().isEmpty()) { SwingUtilities.invokeLater(new Runnable() { @Override public void run() { final WaveformDetailUpdate update = new WaveformDetailUpdate(player, detail); for (final WaveformListener listener : getWaveformListeners()) { try { listener.detailChanged(update); } catch (Throwable t) { logger.warn("Problem delivering waveform detail update to listener", t); } } } }); } }
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Send a waveform detail update announcement to all registered listeners. @param player the player whose waveform detail has changed @param detail the new waveform detail, if any
[ "Send", "a", "waveform", "detail", "update", "announcement", "to", "all", "registered", "listeners", "." ]
f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/WaveformFinder.java#L697-L714
163,925
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/WaveformFinder.java
WaveformFinder.primeCache
private void primeCache() { SwingUtilities.invokeLater(new Runnable() { @Override public void run() { for (Map.Entry<DeckReference, TrackMetadata> entry : MetadataFinder.getInstance().getLoadedTracks().entrySet()) { if (entry.getKey().hotCue == 0) { // The track is currently loaded in a main player deck handleUpdate(new TrackMetadataUpdate(entry.getKey().player, entry.getValue())); } } } }); }
java
private void primeCache() { SwingUtilities.invokeLater(new Runnable() { @Override public void run() { for (Map.Entry<DeckReference, TrackMetadata> entry : MetadataFinder.getInstance().getLoadedTracks().entrySet()) { if (entry.getKey().hotCue == 0) { // The track is currently loaded in a main player deck handleUpdate(new TrackMetadataUpdate(entry.getKey().player, entry.getValue())); } } } }); }
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Send ourselves "updates" about any tracks that were loaded before we started, or before we were requesting details, since we missed them.
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/WaveformFinder.java#L823-L834
163,926
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/WaveformFinder.java
WaveformFinder.stop
@SuppressWarnings("WeakerAccess") public synchronized void stop() { if (isRunning()) { MetadataFinder.getInstance().removeTrackMetadataListener(metadataListener); running.set(false); pendingUpdates.clear(); queueHandler.interrupt(); queueHandler = null; // Report the loss of our waveforms, on the proper thread, outside our lock final Set<DeckReference> dyingPreviewCache = new HashSet<DeckReference>(previewHotCache.keySet()); previewHotCache.clear(); final Set<DeckReference> dyingDetailCache = new HashSet<DeckReference>(detailHotCache.keySet()); detailHotCache.clear(); SwingUtilities.invokeLater(new Runnable() { @Override public void run() { for (DeckReference deck : dyingPreviewCache) { // Report the loss of our previews. if (deck.hotCue == 0) { deliverWaveformPreviewUpdate(deck.player, null); } } for (DeckReference deck : dyingDetailCache) { // Report the loss of our details. if (deck.hotCue == 0) { deliverWaveformDetailUpdate(deck.player, null); } } } }); deliverLifecycleAnnouncement(logger, false); } }
java
@SuppressWarnings("WeakerAccess") public synchronized void stop() { if (isRunning()) { MetadataFinder.getInstance().removeTrackMetadataListener(metadataListener); running.set(false); pendingUpdates.clear(); queueHandler.interrupt(); queueHandler = null; // Report the loss of our waveforms, on the proper thread, outside our lock final Set<DeckReference> dyingPreviewCache = new HashSet<DeckReference>(previewHotCache.keySet()); previewHotCache.clear(); final Set<DeckReference> dyingDetailCache = new HashSet<DeckReference>(detailHotCache.keySet()); detailHotCache.clear(); SwingUtilities.invokeLater(new Runnable() { @Override public void run() { for (DeckReference deck : dyingPreviewCache) { // Report the loss of our previews. if (deck.hotCue == 0) { deliverWaveformPreviewUpdate(deck.player, null); } } for (DeckReference deck : dyingDetailCache) { // Report the loss of our details. if (deck.hotCue == 0) { deliverWaveformDetailUpdate(deck.player, null); } } } }); deliverLifecycleAnnouncement(logger, false); } }
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Stop finding waveforms for all active players.
[ "Stop", "finding", "waveforms", "for", "all", "active", "players", "." ]
f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/WaveformFinder.java#L877-L908
163,927
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/ArtFinder.java
ArtFinder.clearArt
private void clearArt(DeviceAnnouncement announcement) { final int player = announcement.getNumber(); // Iterate over a copy to avoid concurrent modification issues for (DeckReference deck : new HashSet<DeckReference>(hotCache.keySet())) { if (deck.player == player) { hotCache.remove(deck); if (deck.hotCue == 0) { deliverAlbumArtUpdate(player, null); // Inform listeners that the artwork is gone. } } } // Again iterate over a copy to avoid concurrent modification issues for (DataReference art : new HashSet<DataReference>(artCache.keySet())) { if (art.player == player) { artCache.remove(art); } } }
java
private void clearArt(DeviceAnnouncement announcement) { final int player = announcement.getNumber(); // Iterate over a copy to avoid concurrent modification issues for (DeckReference deck : new HashSet<DeckReference>(hotCache.keySet())) { if (deck.player == player) { hotCache.remove(deck); if (deck.hotCue == 0) { deliverAlbumArtUpdate(player, null); // Inform listeners that the artwork is gone. } } } // Again iterate over a copy to avoid concurrent modification issues for (DataReference art : new HashSet<DataReference>(artCache.keySet())) { if (art.player == player) { artCache.remove(art); } } }
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We have received notification that a device is no longer on the network, so clear out its artwork. @param announcement the packet which reported the device’s disappearance
[ "We", "have", "received", "notification", "that", "a", "device", "is", "no", "longer", "on", "the", "network", "so", "clear", "out", "its", "artwork", "." ]
f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/ArtFinder.java#L152-L169
163,928
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/ArtFinder.java
ArtFinder.updateArt
private void updateArt(TrackMetadataUpdate update, AlbumArt art) { hotCache.put(DeckReference.getDeckReference(update.player, 0), art); // Main deck if (update.metadata.getCueList() != null) { // Update the cache with any hot cues in this track as well for (CueList.Entry entry : update.metadata.getCueList().entries) { if (entry.hotCueNumber != 0) { hotCache.put(DeckReference.getDeckReference(update.player, entry.hotCueNumber), art); } } } deliverAlbumArtUpdate(update.player, art); }
java
private void updateArt(TrackMetadataUpdate update, AlbumArt art) { hotCache.put(DeckReference.getDeckReference(update.player, 0), art); // Main deck if (update.metadata.getCueList() != null) { // Update the cache with any hot cues in this track as well for (CueList.Entry entry : update.metadata.getCueList().entries) { if (entry.hotCueNumber != 0) { hotCache.put(DeckReference.getDeckReference(update.player, entry.hotCueNumber), art); } } } deliverAlbumArtUpdate(update.player, art); }
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We have obtained album art for a device, so store it and alert any listeners. @param update the update which caused us to retrieve this art @param art the album art which we retrieved
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/ArtFinder.java#L177-L187
163,929
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/ArtFinder.java
ArtFinder.getLoadedArt
public Map<DeckReference, AlbumArt> getLoadedArt() { ensureRunning(); // Make a copy so callers get an immutable snapshot of the current state. return Collections.unmodifiableMap(new HashMap<DeckReference, AlbumArt>(hotCache)); }
java
public Map<DeckReference, AlbumArt> getLoadedArt() { ensureRunning(); // Make a copy so callers get an immutable snapshot of the current state. return Collections.unmodifiableMap(new HashMap<DeckReference, AlbumArt>(hotCache)); }
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Get the art available for all tracks currently loaded in any player, either on the play deck, or in a hot cue. @return the album art associated with all current players, including for any tracks loaded in their hot cue slots @throws IllegalStateException if the ArtFinder is not running
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/ArtFinder.java#L196-L200
163,930
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/ArtFinder.java
ArtFinder.requestArtworkInternal
private AlbumArt requestArtworkInternal(final DataReference artReference, final CdjStatus.TrackType trackType, final boolean failIfPassive) { // First check if we are using cached data for this slot. MetadataCache cache = MetadataFinder.getInstance().getMetadataCache(SlotReference.getSlotReference(artReference)); if (cache != null) { final AlbumArt result = cache.getAlbumArt(null, artReference); if (result != null) { artCache.put(artReference, result); } return result; } // Then see if any registered metadata providers can offer it for us. final MediaDetails sourceDetails = MetadataFinder.getInstance().getMediaDetailsFor(artReference.getSlotReference()); if (sourceDetails != null) { final AlbumArt provided = MetadataFinder.getInstance().allMetadataProviders.getAlbumArt(sourceDetails, artReference); if (provided != null) { return provided; } } // At this point, unless we are allowed to actively request the data, we are done. We can always actively // request tracks from rekordbox. if (MetadataFinder.getInstance().isPassive() && failIfPassive && artReference.slot != CdjStatus.TrackSourceSlot.COLLECTION) { return null; } // We have to actually request the art using the dbserver protocol. ConnectionManager.ClientTask<AlbumArt> task = new ConnectionManager.ClientTask<AlbumArt>() { @Override public AlbumArt useClient(Client client) throws Exception { return getArtwork(artReference.rekordboxId, SlotReference.getSlotReference(artReference), trackType, client); } }; try { AlbumArt artwork = ConnectionManager.getInstance().invokeWithClientSession(artReference.player, task, "requesting artwork"); if (artwork != null) { // Our cache file load or network request succeeded, so add to the level 2 cache. artCache.put(artReference, artwork); } return artwork; } catch (Exception e) { logger.error("Problem requesting album art, returning null", e); } return null; }
java
private AlbumArt requestArtworkInternal(final DataReference artReference, final CdjStatus.TrackType trackType, final boolean failIfPassive) { // First check if we are using cached data for this slot. MetadataCache cache = MetadataFinder.getInstance().getMetadataCache(SlotReference.getSlotReference(artReference)); if (cache != null) { final AlbumArt result = cache.getAlbumArt(null, artReference); if (result != null) { artCache.put(artReference, result); } return result; } // Then see if any registered metadata providers can offer it for us. final MediaDetails sourceDetails = MetadataFinder.getInstance().getMediaDetailsFor(artReference.getSlotReference()); if (sourceDetails != null) { final AlbumArt provided = MetadataFinder.getInstance().allMetadataProviders.getAlbumArt(sourceDetails, artReference); if (provided != null) { return provided; } } // At this point, unless we are allowed to actively request the data, we are done. We can always actively // request tracks from rekordbox. if (MetadataFinder.getInstance().isPassive() && failIfPassive && artReference.slot != CdjStatus.TrackSourceSlot.COLLECTION) { return null; } // We have to actually request the art using the dbserver protocol. ConnectionManager.ClientTask<AlbumArt> task = new ConnectionManager.ClientTask<AlbumArt>() { @Override public AlbumArt useClient(Client client) throws Exception { return getArtwork(artReference.rekordboxId, SlotReference.getSlotReference(artReference), trackType, client); } }; try { AlbumArt artwork = ConnectionManager.getInstance().invokeWithClientSession(artReference.player, task, "requesting artwork"); if (artwork != null) { // Our cache file load or network request succeeded, so add to the level 2 cache. artCache.put(artReference, artwork); } return artwork; } catch (Exception e) { logger.error("Problem requesting album art, returning null", e); } return null; }
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Ask the specified player for the album art in the specified slot with the specified rekordbox ID, using cached media instead if it is available, and possibly giving up if we are in passive mode. @param artReference uniquely identifies the desired album art @param trackType the kind of track that owns the art @param failIfPassive will prevent the request from taking place if we are in passive mode, so that automatic artwork updates will use available caches only @return the album art found, if any
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/ArtFinder.java#L280-L326
163,931
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/ArtFinder.java
ArtFinder.requestArtworkFrom
public AlbumArt requestArtworkFrom(final DataReference artReference, final CdjStatus.TrackType trackType) { ensureRunning(); AlbumArt artwork = findArtInMemoryCaches(artReference); // First check the in-memory artwork caches. if (artwork == null) { artwork = requestArtworkInternal(artReference, trackType, false); } return artwork; }
java
public AlbumArt requestArtworkFrom(final DataReference artReference, final CdjStatus.TrackType trackType) { ensureRunning(); AlbumArt artwork = findArtInMemoryCaches(artReference); // First check the in-memory artwork caches. if (artwork == null) { artwork = requestArtworkInternal(artReference, trackType, false); } return artwork; }
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Ask the specified player for the specified artwork from the specified media slot, first checking if we have a cached copy. @param artReference uniquely identifies the desired artwork @param trackType the kind of track that owns the artwork @return the artwork, if it was found, or {@code null} @throws IllegalStateException if the ArtFinder is not running
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/ArtFinder.java#L339-L346
163,932
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/ArtFinder.java
ArtFinder.getArtwork
AlbumArt getArtwork(int artworkId, SlotReference slot, CdjStatus.TrackType trackType, Client client) throws IOException { // Send the artwork request Message response = client.simpleRequest(Message.KnownType.ALBUM_ART_REQ, Message.KnownType.ALBUM_ART, client.buildRMST(Message.MenuIdentifier.DATA, slot.slot, trackType), new NumberField((long)artworkId)); // Create an image from the response bytes return new AlbumArt(new DataReference(slot, artworkId), ((BinaryField)response.arguments.get(3)).getValue()); }
java
AlbumArt getArtwork(int artworkId, SlotReference slot, CdjStatus.TrackType trackType, Client client) throws IOException { // Send the artwork request Message response = client.simpleRequest(Message.KnownType.ALBUM_ART_REQ, Message.KnownType.ALBUM_ART, client.buildRMST(Message.MenuIdentifier.DATA, slot.slot, trackType), new NumberField((long)artworkId)); // Create an image from the response bytes return new AlbumArt(new DataReference(slot, artworkId), ((BinaryField)response.arguments.get(3)).getValue()); }
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Request the artwork with a particular artwork ID, given a connection to a player that has already been set up. @param artworkId identifies the album art to retrieve @param slot the slot identifier from which the associated track was loaded @param trackType the kind of track that owns the artwork @param client the dbserver client that is communicating with the appropriate player @return the track's artwork, or null if none is available @throws IOException if there is a problem communicating with the player
[ "Request", "the", "artwork", "with", "a", "particular", "artwork", "ID", "given", "a", "connection", "to", "a", "player", "that", "has", "already", "been", "set", "up", "." ]
f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/ArtFinder.java#L360-L369
163,933
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/ArtFinder.java
ArtFinder.findArtInMemoryCaches
private AlbumArt findArtInMemoryCaches(DataReference artReference) { // First see if we can find the new track in the hot cache as a hot cue for (AlbumArt cached : hotCache.values()) { if (cached.artReference.equals(artReference)) { // Found a hot cue hit, use it. return cached; } } // Not in the hot cache, see if it is in our LRU cache return artCache.get(artReference); }
java
private AlbumArt findArtInMemoryCaches(DataReference artReference) { // First see if we can find the new track in the hot cache as a hot cue for (AlbumArt cached : hotCache.values()) { if (cached.artReference.equals(artReference)) { // Found a hot cue hit, use it. return cached; } } // Not in the hot cache, see if it is in our LRU cache return artCache.get(artReference); }
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Look for the specified album art in both the hot cache of loaded tracks and the longer-lived LRU cache. @param artReference uniquely identifies the desired album art @return the art, if it was found in one of our caches, or {@code null}
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/ArtFinder.java#L383-L393
163,934
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/ArtFinder.java
ArtFinder.deliverAlbumArtUpdate
private void deliverAlbumArtUpdate(int player, AlbumArt art) { if (!getAlbumArtListeners().isEmpty()) { final AlbumArtUpdate update = new AlbumArtUpdate(player, art); for (final AlbumArtListener listener : getAlbumArtListeners()) { try { listener.albumArtChanged(update); } catch (Throwable t) { logger.warn("Problem delivering album art update to listener", t); } } } }
java
private void deliverAlbumArtUpdate(int player, AlbumArt art) { if (!getAlbumArtListeners().isEmpty()) { final AlbumArtUpdate update = new AlbumArtUpdate(player, art); for (final AlbumArtListener listener : getAlbumArtListeners()) { try { listener.albumArtChanged(update); } catch (Throwable t) { logger.warn("Problem delivering album art update to listener", t); } } } }
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Send an album art update announcement to all registered listeners.
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/ArtFinder.java#L450-L462
163,935
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/AlbumArt.java
AlbumArt.getImage
public BufferedImage getImage() { ByteBuffer artwork = getRawBytes(); artwork.rewind(); byte[] imageBytes = new byte[artwork.remaining()]; artwork.get(imageBytes); try { return ImageIO.read(new ByteArrayInputStream(imageBytes)); } catch (IOException e) { logger.error("Weird! Caught exception creating image from artwork bytes", e); return null; } }
java
public BufferedImage getImage() { ByteBuffer artwork = getRawBytes(); artwork.rewind(); byte[] imageBytes = new byte[artwork.remaining()]; artwork.get(imageBytes); try { return ImageIO.read(new ByteArrayInputStream(imageBytes)); } catch (IOException e) { logger.error("Weird! Caught exception creating image from artwork bytes", e); return null; } }
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Given the byte buffer containing album art, build an actual image from it for easy rendering. @return the newly-created image, ready to be drawn
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/AlbumArt.java#L52-L63
163,936
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/CdjStatus.java
CdjStatus.findTrackSourceSlot
private TrackSourceSlot findTrackSourceSlot() { TrackSourceSlot result = TRACK_SOURCE_SLOT_MAP.get(packetBytes[41]); if (result == null) { return TrackSourceSlot.UNKNOWN; } return result; }
java
private TrackSourceSlot findTrackSourceSlot() { TrackSourceSlot result = TRACK_SOURCE_SLOT_MAP.get(packetBytes[41]); if (result == null) { return TrackSourceSlot.UNKNOWN; } return result; }
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Determine the enum value corresponding to the track source slot found in the packet. @return the proper value
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/CdjStatus.java#L489-L495
163,937
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/CdjStatus.java
CdjStatus.findTrackType
private TrackType findTrackType() { TrackType result = TRACK_TYPE_MAP.get(packetBytes[42]); if (result == null) { return TrackType.UNKNOWN; } return result; }
java
private TrackType findTrackType() { TrackType result = TRACK_TYPE_MAP.get(packetBytes[42]); if (result == null) { return TrackType.UNKNOWN; } return result; }
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Determine the enum value corresponding to the track type found in the packet. @return the proper value
[ "Determine", "the", "enum", "value", "corresponding", "to", "the", "track", "type", "found", "in", "the", "packet", "." ]
f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/CdjStatus.java#L502-L508
163,938
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/CdjStatus.java
CdjStatus.findPlayState1
private PlayState1 findPlayState1() { PlayState1 result = PLAY_STATE_1_MAP.get(packetBytes[123]); if (result == null) { return PlayState1.UNKNOWN; } return result; }
java
private PlayState1 findPlayState1() { PlayState1 result = PLAY_STATE_1_MAP.get(packetBytes[123]); if (result == null) { return PlayState1.UNKNOWN; } return result; }
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Determine the enum value corresponding to the first play state found in the packet. @return the proper value
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/CdjStatus.java#L515-L521
163,939
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/CdjStatus.java
CdjStatus.findPlayState3
private PlayState3 findPlayState3() { PlayState3 result = PLAY_STATE_3_MAP.get(packetBytes[157]); if (result == null) { return PlayState3.UNKNOWN; } return result; }
java
private PlayState3 findPlayState3() { PlayState3 result = PLAY_STATE_3_MAP.get(packetBytes[157]); if (result == null) { return PlayState3.UNKNOWN; } return result; }
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Determine the enum value corresponding to the third play state found in the packet. @return the proper value
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/CdjStatus.java#L550-L556
163,940
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/CdjStatus.java
CdjStatus.isPlaying
@SuppressWarnings("WeakerAccess") public boolean isPlaying() { if (packetBytes.length >= 212) { return (packetBytes[STATUS_FLAGS] & PLAYING_FLAG) > 0; } else { final PlayState1 state = getPlayState1(); return state == PlayState1.PLAYING || state == PlayState1.LOOPING || (state == PlayState1.SEARCHING && getPlayState2() == PlayState2.MOVING); } }
java
@SuppressWarnings("WeakerAccess") public boolean isPlaying() { if (packetBytes.length >= 212) { return (packetBytes[STATUS_FLAGS] & PLAYING_FLAG) > 0; } else { final PlayState1 state = getPlayState1(); return state == PlayState1.PLAYING || state == PlayState1.LOOPING || (state == PlayState1.SEARCHING && getPlayState2() == PlayState2.MOVING); } }
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Was the CDJ playing a track when this update was sent? @return true if the play flag was set, or, if this seems to be a non-nexus player, if <em>P<sub>1</sub></em> has a value corresponding to a playing state.
[ "Was", "the", "CDJ", "playing", "a", "track", "when", "this", "update", "was", "sent?" ]
f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/CdjStatus.java#L719-L728
163,941
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/CdjStatus.java
CdjStatus.formatCueCountdown
@SuppressWarnings("WeakerAccess") public String formatCueCountdown() { int count = getCueCountdown(); if (count == 511) { return "--.-"; } if ((count >= 1) && (count <= 256)) { int bars = (count - 1) / 4; int beats = ((count - 1) % 4) + 1; return String.format("%02d.%d", bars, beats); } if (count == 0) { return "00.0"; } return "??.?"; }
java
@SuppressWarnings("WeakerAccess") public String formatCueCountdown() { int count = getCueCountdown(); if (count == 511) { return "--.-"; } if ((count >= 1) && (count <= 256)) { int bars = (count - 1) / 4; int beats = ((count - 1) % 4) + 1; return String.format("%02d.%d", bars, beats); } if (count == 0) { return "00.0"; } return "??.?"; }
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Format a cue countdown indicator in the same way as the CDJ would at this point in the track. @return the value that the CDJ would display to indicate the distance to the next cue @see #getCueCountdown()
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/CdjStatus.java#L1011-L1030
163,942
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/BeatGridFinder.java
BeatGridFinder.clearDeck
private void clearDeck(TrackMetadataUpdate update) { if (hotCache.remove(DeckReference.getDeckReference(update.player, 0)) != null) { deliverBeatGridUpdate(update.player, null); } }
java
private void clearDeck(TrackMetadataUpdate update) { if (hotCache.remove(DeckReference.getDeckReference(update.player, 0)) != null) { deliverBeatGridUpdate(update.player, null); } }
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We have received an update that invalidates the beat grid for a player, so clear it and alert any listeners if this represents a change. This does not affect the hot cues; they will stick around until the player loads a new track that overwrites one or more of them. @param update the update which means we have no beat grid for the associated player
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/BeatGridFinder.java#L131-L135
163,943
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/BeatGridFinder.java
BeatGridFinder.clearBeatGrids
private void clearBeatGrids(DeviceAnnouncement announcement) { final int player = announcement.getNumber(); // Iterate over a copy to avoid concurrent modification issues for (DeckReference deck : new HashSet<DeckReference>(hotCache.keySet())) { if (deck.player == player) { hotCache.remove(deck); if (deck.hotCue == 0) { deliverBeatGridUpdate(player, null); // Inform listeners the beat grid is gone. } } } }
java
private void clearBeatGrids(DeviceAnnouncement announcement) { final int player = announcement.getNumber(); // Iterate over a copy to avoid concurrent modification issues for (DeckReference deck : new HashSet<DeckReference>(hotCache.keySet())) { if (deck.player == player) { hotCache.remove(deck); if (deck.hotCue == 0) { deliverBeatGridUpdate(player, null); // Inform listeners the beat grid is gone. } } } }
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We have received notification that a device is no longer on the network, so clear out all its beat grids. @param announcement the packet which reported the device’s disappearance
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/BeatGridFinder.java#L142-L153
163,944
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/BeatGridFinder.java
BeatGridFinder.updateBeatGrid
private void updateBeatGrid(TrackMetadataUpdate update, BeatGrid beatGrid) { hotCache.put(DeckReference.getDeckReference(update.player, 0), beatGrid); // Main deck if (update.metadata.getCueList() != null) { // Update the cache with any hot cues in this track as well for (CueList.Entry entry : update.metadata.getCueList().entries) { if (entry.hotCueNumber != 0) { hotCache.put(DeckReference.getDeckReference(update.player, entry.hotCueNumber), beatGrid); } } } deliverBeatGridUpdate(update.player, beatGrid); }
java
private void updateBeatGrid(TrackMetadataUpdate update, BeatGrid beatGrid) { hotCache.put(DeckReference.getDeckReference(update.player, 0), beatGrid); // Main deck if (update.metadata.getCueList() != null) { // Update the cache with any hot cues in this track as well for (CueList.Entry entry : update.metadata.getCueList().entries) { if (entry.hotCueNumber != 0) { hotCache.put(DeckReference.getDeckReference(update.player, entry.hotCueNumber), beatGrid); } } } deliverBeatGridUpdate(update.player, beatGrid); }
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We have obtained a beat grid for a device, so store it and alert any listeners. @param update the update which caused us to retrieve this beat grid @param beatGrid the beat grid which we retrieved
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/BeatGridFinder.java#L161-L171
163,945
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/BeatGridFinder.java
BeatGridFinder.getLoadedBeatGrids
@SuppressWarnings("WeakerAccess") public Map<DeckReference, BeatGrid> getLoadedBeatGrids() { ensureRunning(); // Make a copy so callers get an immutable snapshot of the current state. return Collections.unmodifiableMap(new HashMap<DeckReference, BeatGrid>(hotCache)); }
java
@SuppressWarnings("WeakerAccess") public Map<DeckReference, BeatGrid> getLoadedBeatGrids() { ensureRunning(); // Make a copy so callers get an immutable snapshot of the current state. return Collections.unmodifiableMap(new HashMap<DeckReference, BeatGrid>(hotCache)); }
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Get the beat grids available for all tracks currently loaded in any player, either on the play deck, or in a hot cue. @return the beat grids associated with all current players, including for any tracks loaded in their hot cue slots @throws IllegalStateException if the BeatGridFinder is not running
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/BeatGridFinder.java#L181-L186
163,946
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/BeatGridFinder.java
BeatGridFinder.requestBeatGridFrom
public BeatGrid requestBeatGridFrom(final DataReference track) { for (BeatGrid cached : hotCache.values()) { if (cached.dataReference.equals(track)) { // Found a hot cue hit, use it. return cached; } } return requestBeatGridInternal(track, false); }
java
public BeatGrid requestBeatGridFrom(final DataReference track) { for (BeatGrid cached : hotCache.values()) { if (cached.dataReference.equals(track)) { // Found a hot cue hit, use it. return cached; } } return requestBeatGridInternal(track, false); }
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Ask the specified player for the beat grid of the track in the specified slot with the specified rekordbox ID, first checking if we have a cache we can use instead. @param track uniquely identifies the track whose beat grid is desired @return the beat grid, if any
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/BeatGridFinder.java#L278-L285
163,947
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/BeatGridFinder.java
BeatGridFinder.getBeatGrid
BeatGrid getBeatGrid(int rekordboxId, SlotReference slot, Client client) throws IOException { Message response = client.simpleRequest(Message.KnownType.BEAT_GRID_REQ, null, client.buildRMST(Message.MenuIdentifier.DATA, slot.slot), new NumberField(rekordboxId)); if (response.knownType == Message.KnownType.BEAT_GRID) { return new BeatGrid(new DataReference(slot, rekordboxId), response); } logger.error("Unexpected response type when requesting beat grid: {}", response); return null; }
java
BeatGrid getBeatGrid(int rekordboxId, SlotReference slot, Client client) throws IOException { Message response = client.simpleRequest(Message.KnownType.BEAT_GRID_REQ, null, client.buildRMST(Message.MenuIdentifier.DATA, slot.slot), new NumberField(rekordboxId)); if (response.knownType == Message.KnownType.BEAT_GRID) { return new BeatGrid(new DataReference(slot, rekordboxId), response); } logger.error("Unexpected response type when requesting beat grid: {}", response); return null; }
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Requests the beat grid for a specific track ID, given a connection to a player that has already been set up. @param rekordboxId the track of interest @param slot identifies the media slot we are querying @param client the dbserver client that is communicating with the appropriate player @return the retrieved beat grid, or {@code null} if there was none available @throws IOException if there is a communication problem
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/BeatGridFinder.java#L298-L307
163,948
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/BeatGridFinder.java
BeatGridFinder.deliverBeatGridUpdate
private void deliverBeatGridUpdate(int player, BeatGrid beatGrid) { if (!getBeatGridListeners().isEmpty()) { final BeatGridUpdate update = new BeatGridUpdate(player, beatGrid); for (final BeatGridListener listener : getBeatGridListeners()) { try { listener.beatGridChanged(update); } catch (Throwable t) { logger.warn("Problem delivering beat grid update to listener", t); } } } }
java
private void deliverBeatGridUpdate(int player, BeatGrid beatGrid) { if (!getBeatGridListeners().isEmpty()) { final BeatGridUpdate update = new BeatGridUpdate(player, beatGrid); for (final BeatGridListener listener : getBeatGridListeners()) { try { listener.beatGridChanged(update); } catch (Throwable t) { logger.warn("Problem delivering beat grid update to listener", t); } } } }
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Send a beat grid update announcement to all registered listeners. @param player the player whose beat grid information has changed @param beatGrid the new beat grid associated with that player, if any
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/BeatGridFinder.java#L372-L384
163,949
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/BeatGridFinder.java
BeatGridFinder.stop
@SuppressWarnings("WeakerAccess") public synchronized void stop() { if (isRunning()) { MetadataFinder.getInstance().removeTrackMetadataListener(metadataListener); running.set(false); pendingUpdates.clear(); queueHandler.interrupt(); queueHandler = null; // Report the loss of our previews, on the proper thread, and outside our lock. final Set<DeckReference> dyingCache = new HashSet<DeckReference>(hotCache.keySet()); SwingUtilities.invokeLater(new Runnable() { @Override public void run() { for (DeckReference deck : dyingCache) { if (deck.hotCue == 0) { deliverBeatGridUpdate(deck.player, null); } } } }); hotCache.clear(); deliverLifecycleAnnouncement(logger, false); } }
java
@SuppressWarnings("WeakerAccess") public synchronized void stop() { if (isRunning()) { MetadataFinder.getInstance().removeTrackMetadataListener(metadataListener); running.set(false); pendingUpdates.clear(); queueHandler.interrupt(); queueHandler = null; // Report the loss of our previews, on the proper thread, and outside our lock. final Set<DeckReference> dyingCache = new HashSet<DeckReference>(hotCache.keySet()); SwingUtilities.invokeLater(new Runnable() { @Override public void run() { for (DeckReference deck : dyingCache) { if (deck.hotCue == 0) { deliverBeatGridUpdate(deck.player, null); } } } }); hotCache.clear(); deliverLifecycleAnnouncement(logger, false); } }
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Stop finding beat grids for all active players.
[ "Stop", "finding", "beat", "grids", "for", "all", "active", "players", "." ]
f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/BeatGridFinder.java#L502-L526
163,950
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/TimeFinder.java
TimeFinder.interpolateTimeSinceUpdate
private long interpolateTimeSinceUpdate(TrackPositionUpdate update, long currentTimestamp) { if (!update.playing) { return update.milliseconds; } long elapsedMillis = (currentTimestamp - update.timestamp) / 1000000; long moved = Math.round(update.pitch * elapsedMillis); if (update.reverse) { return update.milliseconds - moved; } return update.milliseconds + moved; }
java
private long interpolateTimeSinceUpdate(TrackPositionUpdate update, long currentTimestamp) { if (!update.playing) { return update.milliseconds; } long elapsedMillis = (currentTimestamp - update.timestamp) / 1000000; long moved = Math.round(update.pitch * elapsedMillis); if (update.reverse) { return update.milliseconds - moved; } return update.milliseconds + moved; }
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Figure out, based on how much time has elapsed since we received an update, and the playback position, speed, and direction at the time of that update, where the player will be now. @param update the most recent update received from a player @param currentTimestamp the nanosecond timestamp representing when we want to interpolate the track's position @return the playback position we believe that player has reached now
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/TimeFinder.java#L151-L161
163,951
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/TimeFinder.java
TimeFinder.interpolateTimeFromUpdate
private long interpolateTimeFromUpdate(TrackPositionUpdate lastTrackUpdate, CdjStatus newDeviceUpdate, BeatGrid beatGrid) { final int beatNumber = newDeviceUpdate.getBeatNumber(); final boolean noLongerPlaying = !newDeviceUpdate.isPlaying(); // If we have just stopped, see if we are near a cue (assuming that information is available), and if so, // the best assumption is that the DJ jumped to that cue. if (lastTrackUpdate.playing && noLongerPlaying) { final CueList.Entry jumpedTo = findAdjacentCue(newDeviceUpdate, beatGrid); if (jumpedTo != null) return jumpedTo.cueTime; } // Handle the special case where we were not playing either in the previous or current update, but the DJ // might have jumped to a different place in the track. if (!lastTrackUpdate.playing) { if (lastTrackUpdate.beatNumber == beatNumber && noLongerPlaying) { // Haven't moved return lastTrackUpdate.milliseconds; } else { if (noLongerPlaying) { // Have jumped without playing. if (beatNumber < 0) { return -1; // We don't know the position any more; weird to get into this state and still have a grid? } // As a heuristic, assume we are right before the beat? return timeOfBeat(beatGrid, beatNumber, newDeviceUpdate); } } } // One way or another, we are now playing. long elapsedMillis = (newDeviceUpdate.getTimestamp() - lastTrackUpdate.timestamp) / 1000000; long moved = Math.round(lastTrackUpdate.pitch * elapsedMillis); long interpolated = (lastTrackUpdate.reverse)? (lastTrackUpdate.milliseconds - moved) : lastTrackUpdate.milliseconds + moved; if (Math.abs(beatGrid.findBeatAtTime(interpolated) - beatNumber) < 2) { return interpolated; // Our calculations still look plausible } // The player has jumped or drifted somewhere unexpected, correct. if (newDeviceUpdate.isPlayingForwards()) { return timeOfBeat(beatGrid, beatNumber, newDeviceUpdate); } else { return beatGrid.getTimeWithinTrack(Math.min(beatNumber + 1, beatGrid.beatCount)); } }
java
private long interpolateTimeFromUpdate(TrackPositionUpdate lastTrackUpdate, CdjStatus newDeviceUpdate, BeatGrid beatGrid) { final int beatNumber = newDeviceUpdate.getBeatNumber(); final boolean noLongerPlaying = !newDeviceUpdate.isPlaying(); // If we have just stopped, see if we are near a cue (assuming that information is available), and if so, // the best assumption is that the DJ jumped to that cue. if (lastTrackUpdate.playing && noLongerPlaying) { final CueList.Entry jumpedTo = findAdjacentCue(newDeviceUpdate, beatGrid); if (jumpedTo != null) return jumpedTo.cueTime; } // Handle the special case where we were not playing either in the previous or current update, but the DJ // might have jumped to a different place in the track. if (!lastTrackUpdate.playing) { if (lastTrackUpdate.beatNumber == beatNumber && noLongerPlaying) { // Haven't moved return lastTrackUpdate.milliseconds; } else { if (noLongerPlaying) { // Have jumped without playing. if (beatNumber < 0) { return -1; // We don't know the position any more; weird to get into this state and still have a grid? } // As a heuristic, assume we are right before the beat? return timeOfBeat(beatGrid, beatNumber, newDeviceUpdate); } } } // One way or another, we are now playing. long elapsedMillis = (newDeviceUpdate.getTimestamp() - lastTrackUpdate.timestamp) / 1000000; long moved = Math.round(lastTrackUpdate.pitch * elapsedMillis); long interpolated = (lastTrackUpdate.reverse)? (lastTrackUpdate.milliseconds - moved) : lastTrackUpdate.milliseconds + moved; if (Math.abs(beatGrid.findBeatAtTime(interpolated) - beatNumber) < 2) { return interpolated; // Our calculations still look plausible } // The player has jumped or drifted somewhere unexpected, correct. if (newDeviceUpdate.isPlayingForwards()) { return timeOfBeat(beatGrid, beatNumber, newDeviceUpdate); } else { return beatGrid.getTimeWithinTrack(Math.min(beatNumber + 1, beatGrid.beatCount)); } }
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Sanity-check a new non-beat update, make sure we are still interpolating a sensible position, and correct as needed. @param lastTrackUpdate the most recent digested update received from a player @param newDeviceUpdate a new status update from the player @param beatGrid the beat grid for the track that is playing, in case we have jumped @return the playback position we believe that player has reached at that point in time
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/TimeFinder.java#L199-L241
163,952
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/TimeFinder.java
TimeFinder.getTimeFor
public long getTimeFor(int player) { TrackPositionUpdate update = positions.get(player); if (update != null) { return interpolateTimeSinceUpdate(update, System.nanoTime()); } return -1; // We don't know. }
java
public long getTimeFor(int player) { TrackPositionUpdate update = positions.get(player); if (update != null) { return interpolateTimeSinceUpdate(update, System.nanoTime()); } return -1; // We don't know. }
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Get the best guess we have for the current track position on the specified player. @param player the player number whose position is desired @return the milliseconds into the track that we believe playback has reached, or -1 if we don't know @throws IllegalStateException if the TimeFinder is not running
[ "Get", "the", "best", "guess", "we", "have", "for", "the", "current", "track", "position", "on", "the", "specified", "player", "." ]
f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/TimeFinder.java#L252-L258
163,953
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/TimeFinder.java
TimeFinder.interpolationsDisagree
private boolean interpolationsDisagree(TrackPositionUpdate lastUpdate, TrackPositionUpdate currentUpdate) { long now = System.nanoTime(); return Math.abs(interpolateTimeSinceUpdate(lastUpdate, now) - interpolateTimeSinceUpdate(currentUpdate, now)) > slack.get(); }
java
private boolean interpolationsDisagree(TrackPositionUpdate lastUpdate, TrackPositionUpdate currentUpdate) { long now = System.nanoTime(); return Math.abs(interpolateTimeSinceUpdate(lastUpdate, now) - interpolateTimeSinceUpdate(currentUpdate, now)) > slack.get(); }
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Check whether we have diverged from what we would predict from the last update that was sent to a particular track position listener. @param lastUpdate the last update that was sent to the listener @param currentUpdate the latest update available for the same player @return {@code true }if the listener will have diverged by more than our permitted amount of slack, and so should be updated
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/TimeFinder.java#L363-L367
163,954
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/TimeFinder.java
TimeFinder.stop
@SuppressWarnings("WeakerAccess") public synchronized void stop() { if (isRunning()) { BeatFinder.getInstance().removeBeatListener(beatListener); VirtualCdj.getInstance().removeUpdateListener(updateListener); running.set(false); positions.clear(); updates.clear(); deliverLifecycleAnnouncement(logger, false); } }
java
@SuppressWarnings("WeakerAccess") public synchronized void stop() { if (isRunning()) { BeatFinder.getInstance().removeBeatListener(beatListener); VirtualCdj.getInstance().removeUpdateListener(updateListener); running.set(false); positions.clear(); updates.clear(); deliverLifecycleAnnouncement(logger, false); } }
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Stop interpolating playback position for all active players.
[ "Stop", "interpolating", "playback", "position", "for", "all", "active", "players", "." ]
f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/TimeFinder.java#L598-L608
163,955
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/DeckReference.java
DeckReference.getDeckReference
public static synchronized DeckReference getDeckReference(int player, int hotCue) { Map<Integer, DeckReference> playerMap = instances.get(player); if (playerMap == null) { playerMap = new HashMap<Integer, DeckReference>(); instances.put(player, playerMap); } DeckReference result = playerMap.get(hotCue); if (result == null) { result = new DeckReference(player, hotCue); playerMap.put(hotCue, result); } return result; }
java
public static synchronized DeckReference getDeckReference(int player, int hotCue) { Map<Integer, DeckReference> playerMap = instances.get(player); if (playerMap == null) { playerMap = new HashMap<Integer, DeckReference>(); instances.put(player, playerMap); } DeckReference result = playerMap.get(hotCue); if (result == null) { result = new DeckReference(player, hotCue); playerMap.put(hotCue, result); } return result; }
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Get a unique reference to a place where a track is currently loaded in a player. @param player the player in which the track is loaded @param hotCue hot cue number in which the track is loaded, or 0 if it is actively loaded on the playback deck @return the instance that will always represent a reference to the specified player and hot cue
[ "Get", "a", "unique", "reference", "to", "a", "place", "where", "a", "track", "is", "currently", "loaded", "in", "a", "player", "." ]
f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/DeckReference.java#L50-L62
163,956
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java
VirtualCdj.setDeviceName
public synchronized void setDeviceName(String name) { if (name.getBytes().length > DEVICE_NAME_LENGTH) { throw new IllegalArgumentException("name cannot be more than " + DEVICE_NAME_LENGTH + " bytes long"); } Arrays.fill(announcementBytes, DEVICE_NAME_OFFSET, DEVICE_NAME_LENGTH, (byte)0); System.arraycopy(name.getBytes(), 0, announcementBytes, DEVICE_NAME_OFFSET, name.getBytes().length); }
java
public synchronized void setDeviceName(String name) { if (name.getBytes().length > DEVICE_NAME_LENGTH) { throw new IllegalArgumentException("name cannot be more than " + DEVICE_NAME_LENGTH + " bytes long"); } Arrays.fill(announcementBytes, DEVICE_NAME_OFFSET, DEVICE_NAME_LENGTH, (byte)0); System.arraycopy(name.getBytes(), 0, announcementBytes, DEVICE_NAME_OFFSET, name.getBytes().length); }
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Set the name to be used in announcing our presence on the network. The name can be no longer than twenty bytes, and should be normal ASCII, no Unicode. @param name the device name to report in our presence announcement packets.
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java#L233-L239
163,957
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java
VirtualCdj.setTempoMaster
private void setTempoMaster(DeviceUpdate newMaster) { DeviceUpdate oldMaster = tempoMaster.getAndSet(newMaster); if ((newMaster == null && oldMaster != null) || (newMaster != null && ((oldMaster == null) || !newMaster.getAddress().equals(oldMaster.getAddress())))) { // This is a change in master, so report it to any registered listeners deliverMasterChangedAnnouncement(newMaster); } }
java
private void setTempoMaster(DeviceUpdate newMaster) { DeviceUpdate oldMaster = tempoMaster.getAndSet(newMaster); if ((newMaster == null && oldMaster != null) || (newMaster != null && ((oldMaster == null) || !newMaster.getAddress().equals(oldMaster.getAddress())))) { // This is a change in master, so report it to any registered listeners deliverMasterChangedAnnouncement(newMaster); } }
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Establish a new tempo master, and if it is a change from the existing one, report it to the listeners. @param newMaster the packet which caused the change of masters, or {@code null} if there is now no master.
[ "Establish", "a", "new", "tempo", "master", "and", "if", "it", "is", "a", "change", "from", "the", "existing", "one", "report", "it", "to", "the", "listeners", "." ]
f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java#L266-L273
163,958
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java
VirtualCdj.setMasterTempo
private void setMasterTempo(double newTempo) { double oldTempo = Double.longBitsToDouble(masterTempo.getAndSet(Double.doubleToLongBits(newTempo))); if ((getTempoMaster() != null) && (Math.abs(newTempo - oldTempo) > getTempoEpsilon())) { // This is a change in tempo, so report it to any registered listeners, and update our metronome if we are synced. if (isSynced()) { metronome.setTempo(newTempo); notifyBeatSenderOfChange(); } deliverTempoChangedAnnouncement(newTempo); } }
java
private void setMasterTempo(double newTempo) { double oldTempo = Double.longBitsToDouble(masterTempo.getAndSet(Double.doubleToLongBits(newTempo))); if ((getTempoMaster() != null) && (Math.abs(newTempo - oldTempo) > getTempoEpsilon())) { // This is a change in tempo, so report it to any registered listeners, and update our metronome if we are synced. if (isSynced()) { metronome.setTempo(newTempo); notifyBeatSenderOfChange(); } deliverTempoChangedAnnouncement(newTempo); } }
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Establish a new master tempo, and if it is a change from the existing one, report it to the listeners. @param newTempo the newly reported master tempo.
[ "Establish", "a", "new", "master", "tempo", "and", "if", "it", "is", "a", "change", "from", "the", "existing", "one", "report", "it", "to", "the", "listeners", "." ]
f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java#L319-L329
163,959
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java
VirtualCdj.processUpdate
private void processUpdate(DeviceUpdate update) { updates.put(update.getAddress(), update); // Keep track of the largest sync number we see. if (update instanceof CdjStatus) { int syncNumber = ((CdjStatus)update).getSyncNumber(); if (syncNumber > this.largestSyncCounter.get()) { this.largestSyncCounter.set(syncNumber); } } // Deal with the tempo master complexities, including handoff to/from us. if (update.isTempoMaster()) { final Integer packetYieldingTo = update.getDeviceMasterIsBeingYieldedTo(); if (packetYieldingTo == null) { // This is a normal, non-yielding master packet. Update our notion of the current master, and, // if we were yielding, finish that process, updating our sync number appropriately. if (master.get()) { if (nextMaster.get() == update.deviceNumber) { syncCounter.set(largestSyncCounter.get() + 1); } else { if (nextMaster.get() == 0xff) { logger.warn("Saw master asserted by player " + update.deviceNumber + " when we were not yielding it."); } else { logger.warn("Expected to yield master role to player " + nextMaster.get() + " but saw master asserted by player " + update.deviceNumber); } } } master.set(false); nextMaster.set(0xff); setTempoMaster(update); setMasterTempo(update.getEffectiveTempo()); } else { // This is a yielding master packet. If it is us that is being yielded to, take over master. // Log a message if it was unsolicited, and a warning if it's coming from a different player than // we asked. if (packetYieldingTo == getDeviceNumber()) { if (update.deviceNumber != masterYieldedFrom.get()) { if (masterYieldedFrom.get() == 0) { logger.info("Accepting unsolicited Master yield; we must be the only synced device playing."); } else { logger.warn("Expected player " + masterYieldedFrom.get() + " to yield master to us, but player " + update.deviceNumber + " did."); } } master.set(true); masterYieldedFrom.set(0); setTempoMaster(null); setMasterTempo(getTempo()); } } } else { // This update was not acting as a tempo master; if we thought it should be, update our records. DeviceUpdate oldMaster = getTempoMaster(); if (oldMaster != null && oldMaster.getAddress().equals(update.getAddress())) { // This device has resigned master status, and nobody else has claimed it so far setTempoMaster(null); } } deliverDeviceUpdate(update); }
java
private void processUpdate(DeviceUpdate update) { updates.put(update.getAddress(), update); // Keep track of the largest sync number we see. if (update instanceof CdjStatus) { int syncNumber = ((CdjStatus)update).getSyncNumber(); if (syncNumber > this.largestSyncCounter.get()) { this.largestSyncCounter.set(syncNumber); } } // Deal with the tempo master complexities, including handoff to/from us. if (update.isTempoMaster()) { final Integer packetYieldingTo = update.getDeviceMasterIsBeingYieldedTo(); if (packetYieldingTo == null) { // This is a normal, non-yielding master packet. Update our notion of the current master, and, // if we were yielding, finish that process, updating our sync number appropriately. if (master.get()) { if (nextMaster.get() == update.deviceNumber) { syncCounter.set(largestSyncCounter.get() + 1); } else { if (nextMaster.get() == 0xff) { logger.warn("Saw master asserted by player " + update.deviceNumber + " when we were not yielding it."); } else { logger.warn("Expected to yield master role to player " + nextMaster.get() + " but saw master asserted by player " + update.deviceNumber); } } } master.set(false); nextMaster.set(0xff); setTempoMaster(update); setMasterTempo(update.getEffectiveTempo()); } else { // This is a yielding master packet. If it is us that is being yielded to, take over master. // Log a message if it was unsolicited, and a warning if it's coming from a different player than // we asked. if (packetYieldingTo == getDeviceNumber()) { if (update.deviceNumber != masterYieldedFrom.get()) { if (masterYieldedFrom.get() == 0) { logger.info("Accepting unsolicited Master yield; we must be the only synced device playing."); } else { logger.warn("Expected player " + masterYieldedFrom.get() + " to yield master to us, but player " + update.deviceNumber + " did."); } } master.set(true); masterYieldedFrom.set(0); setTempoMaster(null); setMasterTempo(getTempo()); } } } else { // This update was not acting as a tempo master; if we thought it should be, update our records. DeviceUpdate oldMaster = getTempoMaster(); if (oldMaster != null && oldMaster.getAddress().equals(update.getAddress())) { // This device has resigned master status, and nobody else has claimed it so far setTempoMaster(null); } } deliverDeviceUpdate(update); }
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Process a device update once it has been received. Track it as the most recent update from its address, and notify any registered listeners, including master listeners if it results in changes to tracked state, such as the current master player and tempo. Also handles the Baroque dance of handing off the tempo master role from or to another device.
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java#L394-L456
163,960
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java
VirtualCdj.processBeat
void processBeat(Beat beat) { if (isRunning() && beat.isTempoMaster()) { setMasterTempo(beat.getEffectiveTempo()); deliverBeatAnnouncement(beat); } }
java
void processBeat(Beat beat) { if (isRunning() && beat.isTempoMaster()) { setMasterTempo(beat.getEffectiveTempo()); deliverBeatAnnouncement(beat); } }
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Process a beat packet, potentially updating the master tempo and sending our listeners a master beat notification. Does nothing if we are not active.
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java#L462-L467
163,961
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java
VirtualCdj.findMatchingAddress
private InterfaceAddress findMatchingAddress(DeviceAnnouncement aDevice, NetworkInterface networkInterface) { for (InterfaceAddress address : networkInterface.getInterfaceAddresses()) { if ((address.getBroadcast() != null) && Util.sameNetwork(address.getNetworkPrefixLength(), aDevice.getAddress(), address.getAddress())) { return address; } } return null; }
java
private InterfaceAddress findMatchingAddress(DeviceAnnouncement aDevice, NetworkInterface networkInterface) { for (InterfaceAddress address : networkInterface.getInterfaceAddresses()) { if ((address.getBroadcast() != null) && Util.sameNetwork(address.getNetworkPrefixLength(), aDevice.getAddress(), address.getAddress())) { return address; } } return null; }
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Scan a network interface to find if it has an address space which matches the device we are trying to reach. If so, return the address specification. @param aDevice the DJ Link device we are trying to communicate with @param networkInterface the network interface we are testing @return the address which can be used to communicate with the device on the interface, or null
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java#L477-L485
163,962
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java
VirtualCdj.findUnreachablePlayers
public Set<DeviceAnnouncement> findUnreachablePlayers() { ensureRunning(); Set<DeviceAnnouncement> result = new HashSet<DeviceAnnouncement>(); for (DeviceAnnouncement candidate: DeviceFinder.getInstance().getCurrentDevices()) { if (!Util.sameNetwork(matchedAddress.getNetworkPrefixLength(), matchedAddress.getAddress(), candidate.getAddress())) { result.add(candidate); } } return Collections.unmodifiableSet(result); }
java
public Set<DeviceAnnouncement> findUnreachablePlayers() { ensureRunning(); Set<DeviceAnnouncement> result = new HashSet<DeviceAnnouncement>(); for (DeviceAnnouncement candidate: DeviceFinder.getInstance().getCurrentDevices()) { if (!Util.sameNetwork(matchedAddress.getNetworkPrefixLength(), matchedAddress.getAddress(), candidate.getAddress())) { result.add(candidate); } } return Collections.unmodifiableSet(result); }
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Checks if we can see any players that are on a different network than the one we chose for the Virtual CDJ. If so, we are not going to be able to communicate with them, and they should all be moved onto a single network. @return the device announcements of any players which are on unreachable networks, or hopefully an empty list @throws IllegalStateException if we are not running
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java#L672-L681
163,963
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java
VirtualCdj.stop
public synchronized void stop() { if (isRunning()) { try { setSendingStatus(false); } catch (Throwable t) { logger.error("Problem stopping sending status during shutdown", t); } DeviceFinder.getInstance().removeIgnoredAddress(socket.get().getLocalAddress()); socket.get().close(); socket.set(null); broadcastAddress.set(null); updates.clear(); setTempoMaster(null); setDeviceNumber((byte)0); // Set up for self-assignment if restarted. deliverLifecycleAnnouncement(logger, false); } }
java
public synchronized void stop() { if (isRunning()) { try { setSendingStatus(false); } catch (Throwable t) { logger.error("Problem stopping sending status during shutdown", t); } DeviceFinder.getInstance().removeIgnoredAddress(socket.get().getLocalAddress()); socket.get().close(); socket.set(null); broadcastAddress.set(null); updates.clear(); setTempoMaster(null); setDeviceNumber((byte)0); // Set up for self-assignment if restarted. deliverLifecycleAnnouncement(logger, false); } }
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Stop announcing ourselves and listening for status updates.
[ "Stop", "announcing", "ourselves", "and", "listening", "for", "status", "updates", "." ]
f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java#L739-L755
163,964
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java
VirtualCdj.sendAnnouncement
private void sendAnnouncement(InetAddress broadcastAddress) { try { DatagramPacket announcement = new DatagramPacket(announcementBytes, announcementBytes.length, broadcastAddress, DeviceFinder.ANNOUNCEMENT_PORT); socket.get().send(announcement); Thread.sleep(getAnnounceInterval()); } catch (Throwable t) { logger.warn("Unable to send announcement packet, shutting down", t); stop(); } }
java
private void sendAnnouncement(InetAddress broadcastAddress) { try { DatagramPacket announcement = new DatagramPacket(announcementBytes, announcementBytes.length, broadcastAddress, DeviceFinder.ANNOUNCEMENT_PORT); socket.get().send(announcement); Thread.sleep(getAnnounceInterval()); } catch (Throwable t) { logger.warn("Unable to send announcement packet, shutting down", t); stop(); } }
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Send an announcement packet so the other devices see us as being part of the DJ Link network and send us updates.
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java#L761-L771
163,965
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java
VirtualCdj.deliverMasterChangedAnnouncement
private void deliverMasterChangedAnnouncement(final DeviceUpdate update) { for (final MasterListener listener : getMasterListeners()) { try { listener.masterChanged(update); } catch (Throwable t) { logger.warn("Problem delivering master changed announcement to listener", t); } } }
java
private void deliverMasterChangedAnnouncement(final DeviceUpdate update) { for (final MasterListener listener : getMasterListeners()) { try { listener.masterChanged(update); } catch (Throwable t) { logger.warn("Problem delivering master changed announcement to listener", t); } } }
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Send a master changed announcement to all registered master listeners. @param update the message announcing the new tempo master
[ "Send", "a", "master", "changed", "announcement", "to", "all", "registered", "master", "listeners", "." ]
f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java#L909-L917
163,966
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java
VirtualCdj.deliverTempoChangedAnnouncement
private void deliverTempoChangedAnnouncement(final double tempo) { for (final MasterListener listener : getMasterListeners()) { try { listener.tempoChanged(tempo); } catch (Throwable t) { logger.warn("Problem delivering tempo changed announcement to listener", t); } } }
java
private void deliverTempoChangedAnnouncement(final double tempo) { for (final MasterListener listener : getMasterListeners()) { try { listener.tempoChanged(tempo); } catch (Throwable t) { logger.warn("Problem delivering tempo changed announcement to listener", t); } } }
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Send a tempo changed announcement to all registered master listeners. @param tempo the new master tempo
[ "Send", "a", "tempo", "changed", "announcement", "to", "all", "registered", "master", "listeners", "." ]
f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java#L924-L932
163,967
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java
VirtualCdj.deliverBeatAnnouncement
private void deliverBeatAnnouncement(final Beat beat) { for (final MasterListener listener : getMasterListeners()) { try { listener.newBeat(beat); } catch (Throwable t) { logger.warn("Problem delivering master beat announcement to listener", t); } } }
java
private void deliverBeatAnnouncement(final Beat beat) { for (final MasterListener listener : getMasterListeners()) { try { listener.newBeat(beat); } catch (Throwable t) { logger.warn("Problem delivering master beat announcement to listener", t); } } }
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Send a beat announcement to all registered master listeners. @param beat the beat sent by the tempo master
[ "Send", "a", "beat", "announcement", "to", "all", "registered", "master", "listeners", "." ]
f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java#L939-L947
163,968
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java
VirtualCdj.deliverDeviceUpdate
private void deliverDeviceUpdate(final DeviceUpdate update) { for (DeviceUpdateListener listener : getUpdateListeners()) { try { listener.received(update); } catch (Throwable t) { logger.warn("Problem delivering device update to listener", t); } } }
java
private void deliverDeviceUpdate(final DeviceUpdate update) { for (DeviceUpdateListener listener : getUpdateListeners()) { try { listener.received(update); } catch (Throwable t) { logger.warn("Problem delivering device update to listener", t); } } }
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Send a device update to all registered update listeners. @param update the device update that has just arrived
[ "Send", "a", "device", "update", "to", "all", "registered", "update", "listeners", "." ]
f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java#L1006-L1014
163,969
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java
VirtualCdj.deliverMediaDetailsUpdate
private void deliverMediaDetailsUpdate(final MediaDetails details) { for (MediaDetailsListener listener : getMediaDetailsListeners()) { try { listener.detailsAvailable(details); } catch (Throwable t) { logger.warn("Problem delivering media details response to listener", t); } } }
java
private void deliverMediaDetailsUpdate(final MediaDetails details) { for (MediaDetailsListener listener : getMediaDetailsListeners()) { try { listener.detailsAvailable(details); } catch (Throwable t) { logger.warn("Problem delivering media details response to listener", t); } } }
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Send a media details response to all registered listeners. @param details the response that has just arrived
[ "Send", "a", "media", "details", "response", "to", "all", "registered", "listeners", "." ]
f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java#L1072-L1080
163,970
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java
VirtualCdj.assembleAndSendPacket
@SuppressWarnings("SameParameterValue") private void assembleAndSendPacket(Util.PacketType kind, byte[] payload, InetAddress destination, int port) throws IOException { DatagramPacket packet = Util.buildPacket(kind, ByteBuffer.wrap(announcementBytes, DEVICE_NAME_OFFSET, DEVICE_NAME_LENGTH).asReadOnlyBuffer(), ByteBuffer.wrap(payload)); packet.setAddress(destination); packet.setPort(port); socket.get().send(packet); }
java
@SuppressWarnings("SameParameterValue") private void assembleAndSendPacket(Util.PacketType kind, byte[] payload, InetAddress destination, int port) throws IOException { DatagramPacket packet = Util.buildPacket(kind, ByteBuffer.wrap(announcementBytes, DEVICE_NAME_OFFSET, DEVICE_NAME_LENGTH).asReadOnlyBuffer(), ByteBuffer.wrap(payload)); packet.setAddress(destination); packet.setPort(port); socket.get().send(packet); }
[ "@", "SuppressWarnings", "(", "\"SameParameterValue\"", ")", "private", "void", "assembleAndSendPacket", "(", "Util", ".", "PacketType", "kind", ",", "byte", "[", "]", "payload", ",", "InetAddress", "destination", ",", "int", "port", ")", "throws", "IOException", "{", "DatagramPacket", "packet", "=", "Util", ".", "buildPacket", "(", "kind", ",", "ByteBuffer", ".", "wrap", "(", "announcementBytes", ",", "DEVICE_NAME_OFFSET", ",", "DEVICE_NAME_LENGTH", ")", ".", "asReadOnlyBuffer", "(", ")", ",", "ByteBuffer", ".", "wrap", "(", "payload", ")", ")", ";", "packet", ".", "setAddress", "(", "destination", ")", ";", "packet", ".", "setPort", "(", "port", ")", ";", "socket", ".", "get", "(", ")", ".", "send", "(", "packet", ")", ";", "}" ]
Finish the work of building and sending a protocol packet. @param kind the type of packet to create and send @param payload the content which will follow our device name in the packet @param destination where the packet should be sent @param port the port to which the packet should be sent @throws IOException if there is a problem sending the packet
[ "Finish", "the", "work", "of", "building", "and", "sending", "a", "protocol", "packet", "." ]
f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java#L1092-L1100
163,971
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java
VirtualCdj.sendSyncControlCommand
private void sendSyncControlCommand(DeviceUpdate target, byte command) throws IOException { ensureRunning(); byte[] payload = new byte[SYNC_CONTROL_PAYLOAD.length]; System.arraycopy(SYNC_CONTROL_PAYLOAD, 0, payload, 0, SYNC_CONTROL_PAYLOAD.length); payload[2] = getDeviceNumber(); payload[8] = getDeviceNumber(); payload[12] = command; assembleAndSendPacket(Util.PacketType.SYNC_CONTROL, payload, target.getAddress(), BeatFinder.BEAT_PORT); }
java
private void sendSyncControlCommand(DeviceUpdate target, byte command) throws IOException { ensureRunning(); byte[] payload = new byte[SYNC_CONTROL_PAYLOAD.length]; System.arraycopy(SYNC_CONTROL_PAYLOAD, 0, payload, 0, SYNC_CONTROL_PAYLOAD.length); payload[2] = getDeviceNumber(); payload[8] = getDeviceNumber(); payload[12] = command; assembleAndSendPacket(Util.PacketType.SYNC_CONTROL, payload, target.getAddress(), BeatFinder.BEAT_PORT); }
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Assemble and send a packet that performs sync control, turning a device's sync mode on or off, or telling it to become the tempo master. @param target an update from the device whose sync state is to be set @param command the byte identifying the specific sync command to be sent @throws IOException if there is a problem sending the command to the device
[ "Assemble", "and", "send", "a", "packet", "that", "performs", "sync", "control", "turning", "a", "device", "s", "sync", "mode", "on", "or", "off", "or", "telling", "it", "to", "become", "the", "tempo", "master", "." ]
f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java#L1146-L1154
163,972
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java
VirtualCdj.sendSyncModeCommand
public void sendSyncModeCommand(int deviceNumber, boolean synced) throws IOException { final DeviceUpdate update = getLatestStatusFor(deviceNumber); if (update == null) { throw new IllegalArgumentException("Device " + deviceNumber + " not found on network."); } sendSyncModeCommand(update, synced); }
java
public void sendSyncModeCommand(int deviceNumber, boolean synced) throws IOException { final DeviceUpdate update = getLatestStatusFor(deviceNumber); if (update == null) { throw new IllegalArgumentException("Device " + deviceNumber + " not found on network."); } sendSyncModeCommand(update, synced); }
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Tell a device to turn sync on or off. @param deviceNumber the device whose sync state is to be set @param synced {@code} true if sync should be turned on, else it will be turned off @throws IOException if there is a problem sending the command to the device @throws IllegalStateException if the {@code VirtualCdj} is not active @throws IllegalArgumentException if {@code deviceNumber} is not found on the network
[ "Tell", "a", "device", "to", "turn", "sync", "on", "or", "off", "." ]
f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java#L1166-L1172
163,973
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java
VirtualCdj.appointTempoMaster
public void appointTempoMaster(int deviceNumber) throws IOException { final DeviceUpdate update = getLatestStatusFor(deviceNumber); if (update == null) { throw new IllegalArgumentException("Device " + deviceNumber + " not found on network."); } appointTempoMaster(update); }
java
public void appointTempoMaster(int deviceNumber) throws IOException { final DeviceUpdate update = getLatestStatusFor(deviceNumber); if (update == null) { throw new IllegalArgumentException("Device " + deviceNumber + " not found on network."); } appointTempoMaster(update); }
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Tell a device to become tempo master. @param deviceNumber the device we want to take over the role of tempo master @throws IOException if there is a problem sending the command to the device @throws IllegalStateException if the {@code VirtualCdj} is not active @throws IllegalArgumentException if {@code deviceNumber} is not found on the network
[ "Tell", "a", "device", "to", "become", "tempo", "master", "." ]
f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java#L1197-L1203
163,974
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java
VirtualCdj.sendFaderStartCommand
public void sendFaderStartCommand(Set<Integer> deviceNumbersToStart, Set<Integer> deviceNumbersToStop) throws IOException { ensureRunning(); byte[] payload = new byte[FADER_START_PAYLOAD.length]; System.arraycopy(FADER_START_PAYLOAD, 0, payload, 0, FADER_START_PAYLOAD.length); payload[2] = getDeviceNumber(); for (int i = 1; i <= 4; i++) { if (deviceNumbersToStart.contains(i)) { payload[i + 4] = 0; } if (deviceNumbersToStop.contains(i)) { payload[i + 4] = 1; } } assembleAndSendPacket(Util.PacketType.FADER_START_COMMAND, payload, getBroadcastAddress(), BeatFinder.BEAT_PORT); }
java
public void sendFaderStartCommand(Set<Integer> deviceNumbersToStart, Set<Integer> deviceNumbersToStop) throws IOException { ensureRunning(); byte[] payload = new byte[FADER_START_PAYLOAD.length]; System.arraycopy(FADER_START_PAYLOAD, 0, payload, 0, FADER_START_PAYLOAD.length); payload[2] = getDeviceNumber(); for (int i = 1; i <= 4; i++) { if (deviceNumbersToStart.contains(i)) { payload[i + 4] = 0; } if (deviceNumbersToStop.contains(i)) { payload[i + 4] = 1; } } assembleAndSendPacket(Util.PacketType.FADER_START_COMMAND, payload, getBroadcastAddress(), BeatFinder.BEAT_PORT); }
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Broadcast a packet that tells some players to start playing and others to stop. If a player number is in both sets, it will be told to stop. Numbers outside the range 1 to 4 are ignored. @param deviceNumbersToStart the players that should start playing if they aren't already @param deviceNumbersToStop the players that should stop playing @throws IOException if there is a problem broadcasting the command to the players @throws IllegalStateException if the {@code VirtualCdj} is not active
[ "Broadcast", "a", "packet", "that", "tells", "some", "players", "to", "start", "playing", "and", "others", "to", "stop", ".", "If", "a", "player", "number", "is", "in", "both", "sets", "it", "will", "be", "told", "to", "stop", ".", "Numbers", "outside", "the", "range", "1", "to", "4", "are", "ignored", "." ]
f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java#L1234-L1250
163,975
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java
VirtualCdj.sendLoadTrackCommand
public void sendLoadTrackCommand(int targetPlayer, int rekordboxId, int sourcePlayer, CdjStatus.TrackSourceSlot sourceSlot, CdjStatus.TrackType sourceType) throws IOException { final DeviceUpdate update = getLatestStatusFor(targetPlayer); if (update == null) { throw new IllegalArgumentException("Device " + targetPlayer + " not found on network."); } sendLoadTrackCommand(update, rekordboxId, sourcePlayer, sourceSlot, sourceType); }
java
public void sendLoadTrackCommand(int targetPlayer, int rekordboxId, int sourcePlayer, CdjStatus.TrackSourceSlot sourceSlot, CdjStatus.TrackType sourceType) throws IOException { final DeviceUpdate update = getLatestStatusFor(targetPlayer); if (update == null) { throw new IllegalArgumentException("Device " + targetPlayer + " not found on network."); } sendLoadTrackCommand(update, rekordboxId, sourcePlayer, sourceSlot, sourceType); }
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Send a packet to the target player telling it to load the specified track from the specified source player. @param targetPlayer the device number of the player that you want to have load a track @param rekordboxId the identifier of a track within the source player's rekordbox database @param sourcePlayer the device number of the player from which the track should be loaded @param sourceSlot the media slot from which the track should be loaded @param sourceType the type of track to be loaded @throws IOException if there is a problem sending the command @throws IllegalStateException if the {@code VirtualCdj} is not active or the target device cannot be found
[ "Send", "a", "packet", "to", "the", "target", "player", "telling", "it", "to", "load", "the", "specified", "track", "from", "the", "specified", "source", "player", "." ]
f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java#L1306-L1314
163,976
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java
VirtualCdj.sendLoadTrackCommand
public void sendLoadTrackCommand(DeviceUpdate target, int rekordboxId, int sourcePlayer, CdjStatus.TrackSourceSlot sourceSlot, CdjStatus.TrackType sourceType) throws IOException { ensureRunning(); byte[] payload = new byte[LOAD_TRACK_PAYLOAD.length]; System.arraycopy(LOAD_TRACK_PAYLOAD, 0, payload, 0, LOAD_TRACK_PAYLOAD.length); payload[0x02] = getDeviceNumber(); payload[0x05] = getDeviceNumber(); payload[0x09] = (byte)sourcePlayer; payload[0x0a] = sourceSlot.protocolValue; payload[0x0b] = sourceType.protocolValue; Util.numberToBytes(rekordboxId, payload, 0x0d, 4); assembleAndSendPacket(Util.PacketType.LOAD_TRACK_COMMAND, payload, target.getAddress(), UPDATE_PORT); }
java
public void sendLoadTrackCommand(DeviceUpdate target, int rekordboxId, int sourcePlayer, CdjStatus.TrackSourceSlot sourceSlot, CdjStatus.TrackType sourceType) throws IOException { ensureRunning(); byte[] payload = new byte[LOAD_TRACK_PAYLOAD.length]; System.arraycopy(LOAD_TRACK_PAYLOAD, 0, payload, 0, LOAD_TRACK_PAYLOAD.length); payload[0x02] = getDeviceNumber(); payload[0x05] = getDeviceNumber(); payload[0x09] = (byte)sourcePlayer; payload[0x0a] = sourceSlot.protocolValue; payload[0x0b] = sourceType.protocolValue; Util.numberToBytes(rekordboxId, payload, 0x0d, 4); assembleAndSendPacket(Util.PacketType.LOAD_TRACK_COMMAND, payload, target.getAddress(), UPDATE_PORT); }
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Send a packet to the target device telling it to load the specified track from the specified source player. @param target an update from the player that you want to have load a track @param rekordboxId the identifier of a track within the source player's rekordbox database @param sourcePlayer the device number of the player from which the track should be loaded @param sourceSlot the media slot from which the track should be loaded @param sourceType the type of track to be loaded @throws IOException if there is a problem sending the command @throws IllegalStateException if the {@code VirtualCdj} is not active
[ "Send", "a", "packet", "to", "the", "target", "device", "telling", "it", "to", "load", "the", "specified", "track", "from", "the", "specified", "source", "player", "." ]
f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java#L1328-L1341
163,977
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java
VirtualCdj.setSendingStatus
public synchronized void setSendingStatus(boolean send) throws IOException { if (isSendingStatus() == send) { return; } if (send) { // Start sending status packets. ensureRunning(); if ((getDeviceNumber() < 1) || (getDeviceNumber() > 4)) { throw new IllegalStateException("Can only send status when using a standard player number, 1 through 4."); } BeatFinder.getInstance().start(); BeatFinder.getInstance().addLifecycleListener(beatFinderLifecycleListener); final AtomicBoolean stillRunning = new AtomicBoolean(true); sendingStatus = stillRunning; // Allow other threads to stop us when necessary. Thread sender = new Thread(null, new Runnable() { @Override public void run() { while (stillRunning.get()) { sendStatus(); try { Thread.sleep(getStatusInterval()); } catch (InterruptedException e) { logger.warn("beat-link VirtualCDJ status sender thread was interrupted; continuing"); } } } }, "beat-link VirtualCdj status sender"); sender.setDaemon(true); sender.start(); if (isSynced()) { // If we are supposed to be synced, we need to respond to master beats and tempo changes. addMasterListener(ourSyncMasterListener); } if (isPlaying()) { // Start the beat sender too, if we are supposed to be playing. beatSender.set(new BeatSender(metronome)); } } else { // Stop sending status packets, and responding to master beats and tempo changes if we were synced. BeatFinder.getInstance().removeLifecycleListener(beatFinderLifecycleListener); removeMasterListener(ourSyncMasterListener); sendingStatus.set(false); // Stop the status sending thread. sendingStatus = null; // Indicate that we are no longer sending status. final BeatSender activeSender = beatSender.get(); // And stop the beat sender if we have one. if (activeSender != null) { activeSender.shutDown(); beatSender.set(null); } } }
java
public synchronized void setSendingStatus(boolean send) throws IOException { if (isSendingStatus() == send) { return; } if (send) { // Start sending status packets. ensureRunning(); if ((getDeviceNumber() < 1) || (getDeviceNumber() > 4)) { throw new IllegalStateException("Can only send status when using a standard player number, 1 through 4."); } BeatFinder.getInstance().start(); BeatFinder.getInstance().addLifecycleListener(beatFinderLifecycleListener); final AtomicBoolean stillRunning = new AtomicBoolean(true); sendingStatus = stillRunning; // Allow other threads to stop us when necessary. Thread sender = new Thread(null, new Runnable() { @Override public void run() { while (stillRunning.get()) { sendStatus(); try { Thread.sleep(getStatusInterval()); } catch (InterruptedException e) { logger.warn("beat-link VirtualCDJ status sender thread was interrupted; continuing"); } } } }, "beat-link VirtualCdj status sender"); sender.setDaemon(true); sender.start(); if (isSynced()) { // If we are supposed to be synced, we need to respond to master beats and tempo changes. addMasterListener(ourSyncMasterListener); } if (isPlaying()) { // Start the beat sender too, if we are supposed to be playing. beatSender.set(new BeatSender(metronome)); } } else { // Stop sending status packets, and responding to master beats and tempo changes if we were synced. BeatFinder.getInstance().removeLifecycleListener(beatFinderLifecycleListener); removeMasterListener(ourSyncMasterListener); sendingStatus.set(false); // Stop the status sending thread. sendingStatus = null; // Indicate that we are no longer sending status. final BeatSender activeSender = beatSender.get(); // And stop the beat sender if we have one. if (activeSender != null) { activeSender.shutDown(); beatSender.set(null); } } }
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Control whether the Virtual CDJ sends status packets to the other players. Most uses of Beat Link will not require this level of activity. However, if you want to be able to take over the tempo master role, and control the tempo and beat alignment of other players, you will need to turn on this feature, which also requires that you are using one of the standard player numbers, 1-4. @param send if {@code true} we will send status packets, and can participate in (and control) tempo and beat sync @throws IllegalStateException if the virtual CDJ is not running, or if it is not using a device number in the range 1 through 4 @throws IOException if there is a problem starting the {@link BeatFinder}
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java#L1494-L1546
163,978
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java
VirtualCdj.setPlaying
public void setPlaying(boolean playing) { if (this.playing.get() == playing) { return; } this.playing.set(playing); if (playing) { metronome.jumpToBeat(whereStopped.get().getBeat()); if (isSendingStatus()) { // Need to also start the beat sender. beatSender.set(new BeatSender(metronome)); } } else { final BeatSender activeSender = beatSender.get(); if (activeSender != null) { // We have a beat sender we need to stop. activeSender.shutDown(); beatSender.set(null); } whereStopped.set(metronome.getSnapshot()); } }
java
public void setPlaying(boolean playing) { if (this.playing.get() == playing) { return; } this.playing.set(playing); if (playing) { metronome.jumpToBeat(whereStopped.get().getBeat()); if (isSendingStatus()) { // Need to also start the beat sender. beatSender.set(new BeatSender(metronome)); } } else { final BeatSender activeSender = beatSender.get(); if (activeSender != null) { // We have a beat sender we need to stop. activeSender.shutDown(); beatSender.set(null); } whereStopped.set(metronome.getSnapshot()); } }
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Controls whether we report that we are playing. This will only have an impact when we are sending status and beat packets. @param playing {@code true} if we should seem to be playing
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java#L1582-L1603
163,979
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java
VirtualCdj.becomeTempoMaster
public synchronized void becomeTempoMaster() throws IOException { logger.debug("Trying to become master."); if (!isSendingStatus()) { throw new IllegalStateException("Must be sending status updates to become the tempo master."); } // Is there someone we need to ask to yield to us? final DeviceUpdate currentMaster = getTempoMaster(); if (currentMaster != null) { // Send the yield request; we will become master when we get a successful response. byte[] payload = new byte[MASTER_HANDOFF_REQUEST_PAYLOAD.length]; System.arraycopy(MASTER_HANDOFF_REQUEST_PAYLOAD, 0, payload, 0, MASTER_HANDOFF_REQUEST_PAYLOAD.length); payload[2] = getDeviceNumber(); payload[8] = getDeviceNumber(); if (logger.isDebugEnabled()) { logger.debug("Sending master yield request to player " + currentMaster); } requestingMasterRoleFromPlayer.set(currentMaster.deviceNumber); assembleAndSendPacket(Util.PacketType.MASTER_HANDOFF_REQUEST, payload, currentMaster.address, BeatFinder.BEAT_PORT); } else if (!master.get()) { // There is no other master, we can just become it immediately. requestingMasterRoleFromPlayer.set(0); setMasterTempo(getTempo()); master.set(true); } }
java
public synchronized void becomeTempoMaster() throws IOException { logger.debug("Trying to become master."); if (!isSendingStatus()) { throw new IllegalStateException("Must be sending status updates to become the tempo master."); } // Is there someone we need to ask to yield to us? final DeviceUpdate currentMaster = getTempoMaster(); if (currentMaster != null) { // Send the yield request; we will become master when we get a successful response. byte[] payload = new byte[MASTER_HANDOFF_REQUEST_PAYLOAD.length]; System.arraycopy(MASTER_HANDOFF_REQUEST_PAYLOAD, 0, payload, 0, MASTER_HANDOFF_REQUEST_PAYLOAD.length); payload[2] = getDeviceNumber(); payload[8] = getDeviceNumber(); if (logger.isDebugEnabled()) { logger.debug("Sending master yield request to player " + currentMaster); } requestingMasterRoleFromPlayer.set(currentMaster.deviceNumber); assembleAndSendPacket(Util.PacketType.MASTER_HANDOFF_REQUEST, payload, currentMaster.address, BeatFinder.BEAT_PORT); } else if (!master.get()) { // There is no other master, we can just become it immediately. requestingMasterRoleFromPlayer.set(0); setMasterTempo(getTempo()); master.set(true); } }
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Arrange to become the tempo master. Starts a sequence of interactions with the other players that should end up with us in charge of the group tempo and beat alignment. @throws IllegalStateException if we are not sending status updates @throws IOException if there is a problem sending the master yield request
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java#L1670-L1695
163,980
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java
VirtualCdj.setSynced
public synchronized void setSynced(boolean sync) { if (synced.get() != sync) { // We are changing sync state, so add or remove our master listener as appropriate. if (sync && isSendingStatus()) { addMasterListener(ourSyncMasterListener); } else { removeMasterListener(ourSyncMasterListener); } // Also, if there is a tempo master, and we just got synced, adopt its tempo. if (!isTempoMaster() && getTempoMaster() != null) { setTempo(getMasterTempo()); } } synced.set(sync); }
java
public synchronized void setSynced(boolean sync) { if (synced.get() != sync) { // We are changing sync state, so add or remove our master listener as appropriate. if (sync && isSendingStatus()) { addMasterListener(ourSyncMasterListener); } else { removeMasterListener(ourSyncMasterListener); } // Also, if there is a tempo master, and we just got synced, adopt its tempo. if (!isTempoMaster() && getTempoMaster() != null) { setTempo(getMasterTempo()); } } synced.set(sync); }
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Controls whether we are currently staying in sync with the tempo master. Will only be meaningful if we are sending status packets. @param sync if {@code true}, our status packets will be tempo and beat aligned with the tempo master
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java#L1742-L1757
163,981
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java
VirtualCdj.jumpToBeat
public synchronized void jumpToBeat(int beat) { if (beat < 1) { beat = 1; } else { beat = wrapBeat(beat); } if (playing.get()) { metronome.jumpToBeat(beat); } else { whereStopped.set(metronome.getSnapshot(metronome.getTimeOfBeat(beat))); } }
java
public synchronized void jumpToBeat(int beat) { if (beat < 1) { beat = 1; } else { beat = wrapBeat(beat); } if (playing.get()) { metronome.jumpToBeat(beat); } else { whereStopped.set(metronome.getSnapshot(metronome.getTimeOfBeat(beat))); } }
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Moves our current playback position to the specified beat; this will be reflected in any status and beat packets that we are sending. An incoming value less than one will jump us to the first beat. @param beat the beat that we should pretend to be playing
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/VirtualCdj.java#L1852-L1865
163,982
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/WaveformDetailComponent.java
WaveformDetailComponent.getPlaybackState
public Set<PlaybackState> getPlaybackState() { Set<PlaybackState> result = new HashSet<PlaybackState>(playbackStateMap.values()); return Collections.unmodifiableSet(result); }
java
public Set<PlaybackState> getPlaybackState() { Set<PlaybackState> result = new HashSet<PlaybackState>(playbackStateMap.values()); return Collections.unmodifiableSet(result); }
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Look up all recorded playback state information. @return the playback state recorded for any player @since 0.5.0
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/WaveformDetailComponent.java#L260-L263
163,983
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/WaveformDetailComponent.java
WaveformDetailComponent.setPlaybackPosition
private void setPlaybackPosition(long milliseconds) { PlaybackState oldState = currentSimpleState(); if (oldState != null && oldState.position != milliseconds) { setPlaybackState(oldState.player, milliseconds, oldState.playing); } }
java
private void setPlaybackPosition(long milliseconds) { PlaybackState oldState = currentSimpleState(); if (oldState != null && oldState.position != milliseconds) { setPlaybackState(oldState.player, milliseconds, oldState.playing); } }
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Set the current playback position. This method can only be used in situations where the component is tied to a single player, and therefore always has a single playback position. Will cause part of the component to be redrawn if the position has changed. This will be quickly overruled if a player is being monitored, but can be used in other contexts. @param milliseconds how far into the track has been played @see #setPlaybackState
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/WaveformDetailComponent.java#L289-L294
163,984
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/WaveformDetailComponent.java
WaveformDetailComponent.setPlaying
private void setPlaying(boolean playing) { PlaybackState oldState = currentSimpleState(); if (oldState != null && oldState.playing != playing) { setPlaybackState(oldState.player, oldState.position, playing); } }
java
private void setPlaying(boolean playing) { PlaybackState oldState = currentSimpleState(); if (oldState != null && oldState.playing != playing) { setPlaybackState(oldState.player, oldState.position, playing); } }
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Set whether the player holding the waveform is playing, which changes the indicator color to white from red. This method can only be used in situations where the component is tied to a single player, and therefore has a single playback position. @param playing if {@code true}, draw the position marker in white, otherwise red @see #setPlaybackState
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/WaveformDetailComponent.java#L326-L331
163,985
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/WaveformDetailComponent.java
WaveformDetailComponent.setMonitoredPlayer
public synchronized void setMonitoredPlayer(final int player) { if (player < 0) { throw new IllegalArgumentException("player cannot be negative"); } clearPlaybackState(); monitoredPlayer.set(player); if (player > 0) { // Start monitoring the specified player setPlaybackState(player, 0, false); // Start with default values for required simple state. VirtualCdj.getInstance().addUpdateListener(updateListener); MetadataFinder.getInstance().addTrackMetadataListener(metadataListener); cueList.set(null); // Assume the worst, but see if we have one available next. if (MetadataFinder.getInstance().isRunning()) { TrackMetadata metadata = MetadataFinder.getInstance().getLatestMetadataFor(player); if (metadata != null) { cueList.set(metadata.getCueList()); } } WaveformFinder.getInstance().addWaveformListener(waveformListener); if (WaveformFinder.getInstance().isRunning() && WaveformFinder.getInstance().isFindingDetails()) { waveform.set(WaveformFinder.getInstance().getLatestDetailFor(player)); } else { waveform.set(null); } BeatGridFinder.getInstance().addBeatGridListener(beatGridListener); if (BeatGridFinder.getInstance().isRunning()) { beatGrid.set(BeatGridFinder.getInstance().getLatestBeatGridFor(player)); } else { beatGrid.set(null); } try { TimeFinder.getInstance().start(); if (!animating.getAndSet(true)) { // Create the thread to update our position smoothly as the track plays new Thread(new Runnable() { @Override public void run() { while (animating.get()) { try { Thread.sleep(33); // Animate at 30 fps } catch (InterruptedException e) { logger.warn("Waveform animation thread interrupted; ending"); animating.set(false); } setPlaybackPosition(TimeFinder.getInstance().getTimeFor(getMonitoredPlayer())); } } }).start(); } } catch (Exception e) { logger.error("Unable to start the TimeFinder to animate the waveform detail view"); animating.set(false); } } else { // Stop monitoring any player animating.set(false); VirtualCdj.getInstance().removeUpdateListener(updateListener); MetadataFinder.getInstance().removeTrackMetadataListener(metadataListener); WaveformFinder.getInstance().removeWaveformListener(waveformListener); cueList.set(null); waveform.set(null); beatGrid.set(null); } if (!autoScroll.get()) { invalidate(); } repaint(); }
java
public synchronized void setMonitoredPlayer(final int player) { if (player < 0) { throw new IllegalArgumentException("player cannot be negative"); } clearPlaybackState(); monitoredPlayer.set(player); if (player > 0) { // Start monitoring the specified player setPlaybackState(player, 0, false); // Start with default values for required simple state. VirtualCdj.getInstance().addUpdateListener(updateListener); MetadataFinder.getInstance().addTrackMetadataListener(metadataListener); cueList.set(null); // Assume the worst, but see if we have one available next. if (MetadataFinder.getInstance().isRunning()) { TrackMetadata metadata = MetadataFinder.getInstance().getLatestMetadataFor(player); if (metadata != null) { cueList.set(metadata.getCueList()); } } WaveformFinder.getInstance().addWaveformListener(waveformListener); if (WaveformFinder.getInstance().isRunning() && WaveformFinder.getInstance().isFindingDetails()) { waveform.set(WaveformFinder.getInstance().getLatestDetailFor(player)); } else { waveform.set(null); } BeatGridFinder.getInstance().addBeatGridListener(beatGridListener); if (BeatGridFinder.getInstance().isRunning()) { beatGrid.set(BeatGridFinder.getInstance().getLatestBeatGridFor(player)); } else { beatGrid.set(null); } try { TimeFinder.getInstance().start(); if (!animating.getAndSet(true)) { // Create the thread to update our position smoothly as the track plays new Thread(new Runnable() { @Override public void run() { while (animating.get()) { try { Thread.sleep(33); // Animate at 30 fps } catch (InterruptedException e) { logger.warn("Waveform animation thread interrupted; ending"); animating.set(false); } setPlaybackPosition(TimeFinder.getInstance().getTimeFor(getMonitoredPlayer())); } } }).start(); } } catch (Exception e) { logger.error("Unable to start the TimeFinder to animate the waveform detail view"); animating.set(false); } } else { // Stop monitoring any player animating.set(false); VirtualCdj.getInstance().removeUpdateListener(updateListener); MetadataFinder.getInstance().removeTrackMetadataListener(metadataListener); WaveformFinder.getInstance().removeWaveformListener(waveformListener); cueList.set(null); waveform.set(null); beatGrid.set(null); } if (!autoScroll.get()) { invalidate(); } repaint(); }
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Configures the player whose current track waveforms and status will automatically be reflected. Whenever a new track is loaded on that player, the waveform and metadata will be updated, and the current playback position and state of the player will be reflected by the component. @param player the player number to monitor, or zero if monitoring should stop
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/WaveformDetailComponent.java#L387-L452
163,986
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/WaveformDetailComponent.java
WaveformDetailComponent.getFurthestPlaybackState
public PlaybackState getFurthestPlaybackState() { PlaybackState result = null; for (PlaybackState state : playbackStateMap.values()) { if (result == null || (!result.playing && state.playing) || (result.position < state.position) && (state.playing || !result.playing)) { result = state; } } return result; }
java
public PlaybackState getFurthestPlaybackState() { PlaybackState result = null; for (PlaybackState state : playbackStateMap.values()) { if (result == null || (!result.playing && state.playing) || (result.position < state.position) && (state.playing || !result.playing)) { result = state; } } return result; }
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Look up the playback state that has reached furthest in the track, but give playing players priority over stopped players. This is used to choose the scroll center when auto-scrolling is active. @return the playback state, if any, with the highest playing {@link PlaybackState#position} value
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/WaveformDetailComponent.java#L587-L596
163,987
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/WaveformDetailComponent.java
WaveformDetailComponent.getSegmentForX
private int getSegmentForX(int x) { if (autoScroll.get()) { int playHead = (x - (getWidth() / 2)); int offset = Util.timeToHalfFrame(getFurthestPlaybackPosition()) / scale.get(); return (playHead + offset) * scale.get(); } return x * scale.get(); }
java
private int getSegmentForX(int x) { if (autoScroll.get()) { int playHead = (x - (getWidth() / 2)); int offset = Util.timeToHalfFrame(getFurthestPlaybackPosition()) / scale.get(); return (playHead + offset) * scale.get(); } return x * scale.get(); }
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Figure out the starting waveform segment that corresponds to the specified coordinate in the window. @param x the column being drawn @return the offset into the waveform at the current scale and playback time that should be drawn there
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/WaveformDetailComponent.java#L619-L626
163,988
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/WaveformDetailComponent.java
WaveformDetailComponent.getXForBeat
public int getXForBeat(int beat) { BeatGrid grid = beatGrid.get(); if (grid != null) { return millisecondsToX(grid.getTimeWithinTrack(beat)); } return 0; }
java
public int getXForBeat(int beat) { BeatGrid grid = beatGrid.get(); if (grid != null) { return millisecondsToX(grid.getTimeWithinTrack(beat)); } return 0; }
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Determine the X coordinate within the component at which the specified beat begins. @param beat the beat number whose position is desired @return the horizontal position within the component coordinate space where that beat begins @throws IllegalArgumentException if the beat number exceeds the number of beats in the track.
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/WaveformDetailComponent.java#L661-L667
163,989
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/WaveformDetailComponent.java
WaveformDetailComponent.millisecondsToX
public int millisecondsToX(long milliseconds) { if (autoScroll.get()) { int playHead = (getWidth() / 2) + 2; long offset = milliseconds - getFurthestPlaybackPosition(); return playHead + (Util.timeToHalfFrame(offset) / scale.get()); } return Util.timeToHalfFrame(milliseconds) / scale.get(); }
java
public int millisecondsToX(long milliseconds) { if (autoScroll.get()) { int playHead = (getWidth() / 2) + 2; long offset = milliseconds - getFurthestPlaybackPosition(); return playHead + (Util.timeToHalfFrame(offset) / scale.get()); } return Util.timeToHalfFrame(milliseconds) / scale.get(); }
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Converts a time in milliseconds to the appropriate x coordinate for drawing something at that time. @param milliseconds the time at which something should be drawn @return the component x coordinate at which it should be drawn
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/WaveformDetailComponent.java#L676-L683
163,990
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/data/WaveformDetailComponent.java
WaveformDetailComponent.cueColor
public static Color cueColor(CueList.Entry entry) { if (entry.hotCueNumber > 0) { return Color.GREEN; } if (entry.isLoop) { return Color.ORANGE; } return Color.RED; }
java
public static Color cueColor(CueList.Entry entry) { if (entry.hotCueNumber > 0) { return Color.GREEN; } if (entry.isLoop) { return Color.ORANGE; } return Color.RED; }
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Determine the color to use to draw a cue list entry. Hot cues are green, ordinary memory points are red, and loops are orange. @param entry the entry being drawn @return the color with which it should be represented.
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/data/WaveformDetailComponent.java#L698-L706
163,991
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/DeviceUpdate.java
DeviceUpdate.getPacketBytes
public byte[] getPacketBytes() { byte[] result = new byte[packetBytes.length]; System.arraycopy(packetBytes, 0, result, 0, packetBytes.length); return result; }
java
public byte[] getPacketBytes() { byte[] result = new byte[packetBytes.length]; System.arraycopy(packetBytes, 0, result, 0, packetBytes.length); return result; }
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Get the raw data bytes of the device update packet. @return the data sent by the device to update its status
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/DeviceUpdate.java#L100-L104
163,992
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/Util.java
Util.buildPacket
public static DatagramPacket buildPacket(PacketType type, ByteBuffer deviceName, ByteBuffer payload) { ByteBuffer content = ByteBuffer.allocate(0x1f + payload.remaining()); content.put(getMagicHeader()); content.put(type.protocolValue); content.put(deviceName); content.put(payload); return new DatagramPacket(content.array(), content.capacity()); }
java
public static DatagramPacket buildPacket(PacketType type, ByteBuffer deviceName, ByteBuffer payload) { ByteBuffer content = ByteBuffer.allocate(0x1f + payload.remaining()); content.put(getMagicHeader()); content.put(type.protocolValue); content.put(deviceName); content.put(payload); return new DatagramPacket(content.array(), content.capacity()); }
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Build a standard-format UDP packet for sending to port 50001 or 50002 in the protocol. @param type the type of packet to create. @param deviceName the 0x14 (twenty) bytes of the device name to send in the packet. @param payload the remaining bytes which come after the device name. @return the packet to send.
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/Util.java#L176-L183
163,993
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/Util.java
Util.validateHeader
public static PacketType validateHeader(DatagramPacket packet, int port) { byte[] data = packet.getData(); if (data.length < PACKET_TYPE_OFFSET) { logger.warn("Packet is too short to be a Pro DJ Link packet; must be at least " + PACKET_TYPE_OFFSET + " bytes long, was only " + data.length + "."); return null; } if (!getMagicHeader().equals(ByteBuffer.wrap(data, 0, MAGIC_HEADER.length))) { logger.warn("Packet did not have correct nine-byte header for the Pro DJ Link protocol."); return null; } final Map<Byte, PacketType> portMap = PACKET_TYPE_MAP.get(port); if (portMap == null) { logger.warn("Do not know any Pro DJ Link packets that are received on port " + port + "."); return null; } final PacketType result = portMap.get(data[PACKET_TYPE_OFFSET]); if (result == null) { logger.warn("Do not know any Pro DJ Link packets received on port " + port + " with type " + String.format("0x%02x", data[PACKET_TYPE_OFFSET]) + "."); } return result; }
java
public static PacketType validateHeader(DatagramPacket packet, int port) { byte[] data = packet.getData(); if (data.length < PACKET_TYPE_OFFSET) { logger.warn("Packet is too short to be a Pro DJ Link packet; must be at least " + PACKET_TYPE_OFFSET + " bytes long, was only " + data.length + "."); return null; } if (!getMagicHeader().equals(ByteBuffer.wrap(data, 0, MAGIC_HEADER.length))) { logger.warn("Packet did not have correct nine-byte header for the Pro DJ Link protocol."); return null; } final Map<Byte, PacketType> portMap = PACKET_TYPE_MAP.get(port); if (portMap == null) { logger.warn("Do not know any Pro DJ Link packets that are received on port " + port + "."); return null; } final PacketType result = portMap.get(data[PACKET_TYPE_OFFSET]); if (result == null) { logger.warn("Do not know any Pro DJ Link packets received on port " + port + " with type " + String.format("0x%02x", data[PACKET_TYPE_OFFSET]) + "."); } return result; }
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Check to see whether a packet starts with the standard header bytes, followed by a known byte identifying it. If so, return the kind of packet that has been recognized. @param packet a packet that has just been received @param port the port on which the packet has been received @return the type of packet that was recognized, or {@code null} if the packet was not recognized
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/Util.java#L194-L221
163,994
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/Util.java
Util.bytesToNumber
public static long bytesToNumber(byte[] buffer, int start, int length) { long result = 0; for (int index = start; index < start + length; index++) { result = (result << 8) + unsign(buffer[index]); } return result; }
java
public static long bytesToNumber(byte[] buffer, int start, int length) { long result = 0; for (int index = start; index < start + length; index++) { result = (result << 8) + unsign(buffer[index]); } return result; }
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Reconstructs a number that is represented by more than one byte in a network packet in big-endian order. @param buffer the byte array containing the packet data @param start the index of the first byte containing a numeric value @param length the number of bytes making up the value @return the reconstructed number
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/Util.java#L242-L248
163,995
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/Util.java
Util.bytesToNumberLittleEndian
@SuppressWarnings("SameParameterValue") public static long bytesToNumberLittleEndian(byte[] buffer, int start, int length) { long result = 0; for (int index = start + length - 1; index >= start; index--) { result = (result << 8) + unsign(buffer[index]); } return result; }
java
@SuppressWarnings("SameParameterValue") public static long bytesToNumberLittleEndian(byte[] buffer, int start, int length) { long result = 0; for (int index = start + length - 1; index >= start; index--) { result = (result << 8) + unsign(buffer[index]); } return result; }
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Reconstructs a number that is represented by more than one byte in a network packet in little-endian order, for the very few protocol values that are sent in this quirky way. @param buffer the byte array containing the packet data @param start the index of the first byte containing a numeric value @param length the number of bytes making up the value @return the reconstructed number
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/Util.java#L259-L266
163,996
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/Util.java
Util.numberToBytes
public static void numberToBytes(int number, byte[] buffer, int start, int length) { for (int index = start + length - 1; index >= start; index--) { buffer[index] = (byte)(number & 0xff); number = number >> 8; } }
java
public static void numberToBytes(int number, byte[] buffer, int start, int length) { for (int index = start + length - 1; index >= start; index--) { buffer[index] = (byte)(number & 0xff); number = number >> 8; } }
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Writes a number to the specified byte array field, breaking it into its component bytes in big-endian order. If the number is too large to fit in the specified number of bytes, only the low-order bytes are written. @param number the number to be written to the array @param buffer the buffer to which the number should be written @param start where the high-order byte should be written @param length how many bytes of the number should be written
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/Util.java#L277-L282
163,997
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/Util.java
Util.addressToLong
public static long addressToLong(InetAddress address) { long result = 0; for (byte element : address.getAddress()) { result = (result << 8) + unsign(element); } return result; }
java
public static long addressToLong(InetAddress address) { long result = 0; for (byte element : address.getAddress()) { result = (result << 8) + unsign(element); } return result; }
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Converts the bytes that make up an internet address into the corresponding integer value to make it easier to perform bit-masking operations on them. @param address an address whose integer equivalent is desired @return the integer corresponding to that address
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/Util.java#L292-L298
163,998
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/Util.java
Util.sameNetwork
public static boolean sameNetwork(int prefixLength, InetAddress address1, InetAddress address2) { if (logger.isDebugEnabled()) { logger.debug("Comparing address " + address1.getHostAddress() + " with " + address2.getHostAddress() + ", prefixLength=" + prefixLength); } long prefixMask = 0xffffffffL & (-1 << (32 - prefixLength)); return (addressToLong(address1) & prefixMask) == (addressToLong(address2) & prefixMask); }
java
public static boolean sameNetwork(int prefixLength, InetAddress address1, InetAddress address2) { if (logger.isDebugEnabled()) { logger.debug("Comparing address " + address1.getHostAddress() + " with " + address2.getHostAddress() + ", prefixLength=" + prefixLength); } long prefixMask = 0xffffffffL & (-1 << (32 - prefixLength)); return (addressToLong(address1) & prefixMask) == (addressToLong(address2) & prefixMask); }
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Checks whether two internet addresses are on the same subnet. @param prefixLength the number of bits within an address that identify the network @param address1 the first address to be compared @param address2 the second address to be compared @return true if both addresses share the same network bits
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/Util.java#L309-L315
163,999
Deep-Symmetry/beat-link
src/main/java/org/deepsymmetry/beatlink/Util.java
Util.writeFully
public static void writeFully(ByteBuffer buffer, WritableByteChannel channel) throws IOException { while (buffer.hasRemaining()) { channel.write(buffer); } }
java
public static void writeFully(ByteBuffer buffer, WritableByteChannel channel) throws IOException { while (buffer.hasRemaining()) { channel.write(buffer); } }
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Writes the entire remaining contents of the buffer to the channel. May complete in one operation, but the documentation is vague, so this keeps going until we are sure. @param buffer the data to be written @param channel the channel to which we want to write data @throws IOException if there is a problem writing to the channel
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f958a2a70e8a87a31a75326d7b4db77c2f0b4212
https://github.com/Deep-Symmetry/beat-link/blob/f958a2a70e8a87a31a75326d7b4db77c2f0b4212/src/main/java/org/deepsymmetry/beatlink/Util.java#L348-L352