Cope with slow analysis of waveforms on CDJ-3000s

Author: brunchboy

src/main/java/org/deepsymmetry/beatlink/data/TrackMetadata.java

@@ -39,6 +39,13 @@ public class TrackMetadata {
     @API(status = API.Status.STABLE)
     public final CdjStatus.TrackType trackType;
 
+    /**
+     * Tracks when this metadata was created, which can be used to know how long a finder should wait
+     * for a track to be analyzed by a CDJ-3000 before giving up on obtaining other metadata for it.
+     */
+    @API(status = API.Status.EXPERIMENTAL)
+    public final long timestamp = System.nanoTime();
+
     /**
      * The raw dbserver messages containing the metadata when it was read over the network.
      * Can be used to analyze fields that have not yet been reliably understood,

src/main/java/org/deepsymmetry/beatlink/data/WaveformDetail.java

@@ -449,6 +449,14 @@ public Color segmentColor(final int segment, final int scale) {
     }
 
 
+    @Override
+    public boolean equals(Object obj) {
+        if (!(obj instanceof WaveformDetail)) {
+            return false;
+        }
+        final WaveformDetail other = (WaveformDetail) obj;
+        return getData().equals(other.getData());
+    }
 
     @Override
     public String toString() {