Add getter and callbacks for static metadata retrieval.

Issue:#7266
PiperOrigin-RevId: 335416280

RELEASENOTES.md

@@ -10,6 +10,8 @@
         still possible until the next major release using
         `setThrowsWhenUsingWrongThread(false)`
         ([#4463](https://github.com/google/ExoPlayer/issues/4463)).
+    *   Add a getter and callback for static metadata to the player
+        ([#7266](https://github.com/google/ExoPlayer/issues/7266)).
 *   Track selection:
     *   Add option to specify multiple preferred audio or text languages.
 *   Data sources:

extensions/cast/src/main/java/com/google/android/exoplayer2/ext/cast/CastPlayer.java

@@ -27,6 +27,7 @@ import com.google.android.exoplayer2.MediaItem;
 import com.google.android.exoplayer2.PlaybackParameters;
 import com.google.android.exoplayer2.Player;
 import com.google.android.exoplayer2.Timeline;
+import com.google.android.exoplayer2.metadata.Metadata;
 import com.google.android.exoplayer2.source.TrackGroup;
 import com.google.android.exoplayer2.source.TrackGroupArray;
 import com.google.android.exoplayer2.trackselection.FixedTrackSelection;
@@ -51,6 +52,7 @@ import com.google.android.gms.common.api.PendingResult;
 import com.google.android.gms.common.api.ResultCallback;
 import java.util.ArrayDeque;
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.Iterator;
 import java.util.List;
 import java.util.concurrent.CopyOnWriteArrayList;
@@ -561,6 +563,12 @@ public final class CastPlayer extends BasePlayer {
     return currentTrackGroups;
   }
 
+  @Override
+  public List<Metadata> getCurrentStaticMetadata() {
+    // CastPlayer does not currently support metadata.
+    return Collections.emptyList();
+  }
+
   @Override
   public Timeline getCurrentTimeline() {
     return currentTimeline;

library/core/src/main/java/com/google/android/exoplayer2/ExoPlayerImpl.java

@@ -28,6 +28,7 @@ import android.util.Pair;
 import androidx.annotation.Nullable;
 import com.google.android.exoplayer2.PlayerMessage.Target;
 import com.google.android.exoplayer2.analytics.AnalyticsCollector;
+import com.google.android.exoplayer2.metadata.Metadata;
 import com.google.android.exoplayer2.source.MediaSource;
 import com.google.android.exoplayer2.source.MediaSource.MediaPeriodId;
 import com.google.android.exoplayer2.source.MediaSourceFactory;
@@ -43,6 +44,7 @@ import com.google.android.exoplayer2.util.Assertions;
 import com.google.android.exoplayer2.util.Clock;
 import com.google.android.exoplayer2.util.Log;
 import com.google.android.exoplayer2.util.Util;
+import com.google.common.collect.ImmutableList;
 import java.util.ArrayDeque;
 import java.util.ArrayList;
 import java.util.Collections;
@@ -861,6 +863,11 @@ import java.util.concurrent.TimeoutException;
     return playbackInfo.trackSelectorResult.selections;
   }
 
+  @Override
+  public List<Metadata> getCurrentStaticMetadata() {
+    return playbackInfo.staticMetadata;
+  }
+
   @Override
   public Timeline getCurrentTimeline() {
     return playbackInfo.timeline;
@@ -1168,7 +1175,8 @@ import java.util.concurrent.TimeoutException;
               /* requestedContentPositionUs= */ C.msToUs(maskingWindowPositionMs),
               /* totalBufferedDurationUs= */ 0,
               TrackGroupArray.EMPTY,
-              emptyTrackSelectorResult);
+              emptyTrackSelectorResult,
+              ImmutableList.of());
       playbackInfo = playbackInfo.copyWithLoadingMediaPeriodId(dummyMediaPeriodId);
       playbackInfo.bufferedPositionUs = playbackInfo.positionUs;
       return playbackInfo;
@@ -1195,7 +1203,8 @@ import java.util.concurrent.TimeoutException;
               /* requestedContentPositionUs= */ newContentPositionUs,
               /* totalBufferedDurationUs= */ 0,
               playingPeriodChanged ? TrackGroupArray.EMPTY : playbackInfo.trackGroups,
-              playingPeriodChanged ? emptyTrackSelectorResult : playbackInfo.trackSelectorResult);
+              playingPeriodChanged ? emptyTrackSelectorResult : playbackInfo.trackSelectorResult,
+              playingPeriodChanged ? ImmutableList.of() : playbackInfo.staticMetadata);
       playbackInfo = playbackInfo.copyWithLoadingMediaPeriodId(newPeriodId);
       playbackInfo.bufferedPositionUs = newContentPositionUs;
     } else if (newContentPositionUs == oldContentPositionUs) {
@@ -1219,7 +1228,8 @@ import java.util.concurrent.TimeoutException;
                 /* requestedContentPositionUs= */ playbackInfo.positionUs,
                 /* totalBufferedDurationUs= */ maskedBufferedPositionUs - playbackInfo.positionUs,
                 playbackInfo.trackGroups,
-                playbackInfo.trackSelectorResult);
+                playbackInfo.trackSelectorResult,
+                playbackInfo.staticMetadata);
         playbackInfo = playbackInfo.copyWithLoadingMediaPeriodId(newPeriodId);
         playbackInfo.bufferedPositionUs = maskedBufferedPositionUs;
       }
@@ -1241,7 +1251,8 @@ import java.util.concurrent.TimeoutException;
               /* requestedContentPositionUs= */ newContentPositionUs,
               maskedTotalBufferedDurationUs,
               playbackInfo.trackGroups,
-              playbackInfo.trackSelectorResult);
+              playbackInfo.trackSelectorResult,
+              playbackInfo.staticMetadata);
       playbackInfo.bufferedPositionUs = maskedBufferedPositionUs;
     }
     return playbackInfo;
@@ -1348,6 +1359,7 @@ import java.util.concurrent.TimeoutException;
     private final boolean isLoadingChanged;
     private final boolean timelineChanged;
     private final boolean trackSelectorResultChanged;
+    private final boolean staticMetadataChanged;
     private final boolean playWhenReadyChanged;
     private final boolean playbackSuppressionReasonChanged;
     private final boolean isPlayingChanged;
@@ -1387,6 +1399,8 @@ import java.util.concurrent.TimeoutException;
       timelineChanged = !previousPlaybackInfo.timeline.equals(playbackInfo.timeline);
       trackSelectorResultChanged =
           previousPlaybackInfo.trackSelectorResult != playbackInfo.trackSelectorResult;
+      staticMetadataChanged =
+          !previousPlaybackInfo.staticMetadata.equals(playbackInfo.staticMetadata);
       playWhenReadyChanged = previousPlaybackInfo.playWhenReady != playbackInfo.playWhenReady;
       playbackSuppressionReasonChanged =
           previousPlaybackInfo.playbackSuppressionReason != playbackInfo.playbackSuppressionReason;
@@ -1428,6 +1442,11 @@ import java.util.concurrent.TimeoutException;
                 listener.onTracksChanged(
                     playbackInfo.trackGroups, playbackInfo.trackSelectorResult.selections));
       }
+      if (staticMetadataChanged) {
+        invokeAll(
+            listenerSnapshot,
+            listener -> listener.onStaticMetadataChanged(playbackInfo.staticMetadata));
+      }
       if (isLoadingChanged) {
         invokeAll(
             listenerSnapshot, listener -> listener.onIsLoadingChanged(playbackInfo.isLoading));

library/core/src/main/java/com/google/android/exoplayer2/ExoPlayerImplInternal.java

@@ -33,12 +33,14 @@ import com.google.android.exoplayer2.Player.PlayWhenReadyChangeReason;
 import com.google.android.exoplayer2.Player.PlaybackSuppressionReason;
 import com.google.android.exoplayer2.Player.RepeatMode;
 import com.google.android.exoplayer2.analytics.AnalyticsCollector;
+import com.google.android.exoplayer2.metadata.Metadata;
 import com.google.android.exoplayer2.source.MediaPeriod;
 import com.google.android.exoplayer2.source.MediaSource.MediaPeriodId;
 import com.google.android.exoplayer2.source.SampleStream;
 import com.google.android.exoplayer2.source.ShuffleOrder;
 import com.google.android.exoplayer2.source.TrackGroupArray;
 import com.google.android.exoplayer2.trackselection.TrackSelection;
+import com.google.android.exoplayer2.trackselection.TrackSelectionArray;
 import com.google.android.exoplayer2.trackselection.TrackSelector;
 import com.google.android.exoplayer2.trackselection.TrackSelectorResult;
 import com.google.android.exoplayer2.upstream.BandwidthMeter;
@@ -49,6 +51,7 @@ import com.google.android.exoplayer2.util.Log;
 import com.google.android.exoplayer2.util.TraceUtil;
 import com.google.android.exoplayer2.util.Util;
 import com.google.common.base.Supplier;
+import com.google.common.collect.ImmutableList;
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.Collections;
@@ -1338,6 +1341,7 @@ import java.util.concurrent.atomic.AtomicBoolean;
             /* isLoading= */ false,
             resetTrackInfo ? TrackGroupArray.EMPTY : playbackInfo.trackGroups,
             resetTrackInfo ? emptyTrackSelectorResult : playbackInfo.trackSelectorResult,
+            resetTrackInfo ? ImmutableList.of() : playbackInfo.staticMetadata,
             mediaPeriodId,
             playbackInfo.playWhenReady,
             playbackInfo.playbackSuppressionReason,
@@ -2096,6 +2100,7 @@ import java.util.concurrent.atomic.AtomicBoolean;
     resetPendingPauseAtEndOfPeriod();
     TrackGroupArray trackGroupArray = playbackInfo.trackGroups;
     TrackSelectorResult trackSelectorResult = playbackInfo.trackSelectorResult;
+    List<Metadata> staticMetadata = playbackInfo.staticMetadata;
     if (mediaSourceList.isPrepared()) {
       @Nullable MediaPeriodHolder playingPeriodHolder = queue.getPlayingPeriod();
       trackGroupArray =
@@ -2106,18 +2111,35 @@ import java.util.concurrent.atomic.AtomicBoolean;
           playingPeriodHolder == null
               ? emptyTrackSelectorResult
               : playingPeriodHolder.getTrackSelectorResult();
+      staticMetadata = extractMetadataFromTrackSelectionArray(trackSelectorResult.selections);
     } else if (!mediaPeriodId.equals(playbackInfo.periodId)) {
       // Reset previously kept track info if unprepared and the period changes.
       trackGroupArray = TrackGroupArray.EMPTY;
       trackSelectorResult = emptyTrackSelectorResult;
+      staticMetadata = ImmutableList.of();
     }
+
     return playbackInfo.copyWithNewPosition(
         mediaPeriodId,
         positionUs,
         contentPositionUs,
         getTotalBufferedDurationUs(),
         trackGroupArray,
-        trackSelectorResult);
+        trackSelectorResult,
+        staticMetadata);
+  }
+
+  private ImmutableList<Metadata> extractMetadataFromTrackSelectionArray(
+      TrackSelectionArray trackSelectionArray) {
+    ImmutableList.Builder<Metadata> builder = new ImmutableList.Builder<>();
+    for (int i = 0; i < trackSelectionArray.length; i++) {
+      @Nullable TrackSelection trackSelection = trackSelectionArray.get(i);
+      if (trackSelection != null) {
+        Format format = trackSelection.getFormat(0);
+        builder.add(format.metadata == null ? new Metadata() : format.metadata);
+      }
+    }
+    return builder.build();
   }
 
   private void enableRenderers() throws ExoPlaybackException {

library/core/src/main/java/com/google/android/exoplayer2/PlaybackInfo.java

@@ -18,9 +18,12 @@ package com.google.android.exoplayer2;
 import androidx.annotation.CheckResult;
 import androidx.annotation.Nullable;
 import com.google.android.exoplayer2.Player.PlaybackSuppressionReason;
+import com.google.android.exoplayer2.metadata.Metadata;
 import com.google.android.exoplayer2.source.MediaSource.MediaPeriodId;
 import com.google.android.exoplayer2.source.TrackGroupArray;
 import com.google.android.exoplayer2.trackselection.TrackSelectorResult;
+import com.google.common.collect.ImmutableList;
+import java.util.List;
 
 /**
  * Information about an ongoing playback.
@@ -57,6 +60,8 @@ import com.google.android.exoplayer2.trackselection.TrackSelectorResult;
   public final TrackGroupArray trackGroups;
   /** The result of the current track selection. */
   public final TrackSelectorResult trackSelectorResult;
+  /** The current static metadata of the track selections. */
+  public final List<Metadata> staticMetadata;
   /** The {@link MediaPeriodId} of the currently loading media period in the {@link #timeline}. */
   public final MediaPeriodId loadingMediaPeriodId;
   /** Whether playback should proceed when {@link #playbackState} == {@link Player#STATE_READY}. */
@@ -104,6 +109,7 @@ import com.google.android.exoplayer2.trackselection.TrackSelectorResult;
         /* isLoading= */ false,
         TrackGroupArray.EMPTY,
         emptyTrackSelectorResult,
+        /* staticMetadata= */ ImmutableList.of(),
         PLACEHOLDER_MEDIA_PERIOD_ID,
         /* playWhenReady= */ false,
         Player.PLAYBACK_SUPPRESSION_REASON_NONE,
@@ -126,6 +132,7 @@ import com.google.android.exoplayer2.trackselection.TrackSelectorResult;
    * @param isLoading See {@link #isLoading}.
    * @param trackGroups See {@link #trackGroups}.
    * @param trackSelectorResult See {@link #trackSelectorResult}.
+   * @param staticMetadata See {@link #staticMetadata}.
    * @param loadingMediaPeriodId See {@link #loadingMediaPeriodId}.
    * @param playWhenReady See {@link #playWhenReady}.
    * @param playbackSuppressionReason See {@link #playbackSuppressionReason}.
@@ -145,6 +152,7 @@ import com.google.android.exoplayer2.trackselection.TrackSelectorResult;
       boolean isLoading,
       TrackGroupArray trackGroups,
       TrackSelectorResult trackSelectorResult,
+      List<Metadata> staticMetadata,
       MediaPeriodId loadingMediaPeriodId,
       boolean playWhenReady,
       @PlaybackSuppressionReason int playbackSuppressionReason,
@@ -162,6 +170,7 @@ import com.google.android.exoplayer2.trackselection.TrackSelectorResult;
     this.isLoading = isLoading;
     this.trackGroups = trackGroups;
     this.trackSelectorResult = trackSelectorResult;
+    this.staticMetadata = staticMetadata;
     this.loadingMediaPeriodId = loadingMediaPeriodId;
     this.playWhenReady = playWhenReady;
     this.playbackSuppressionReason = playbackSuppressionReason;
@@ -189,6 +198,8 @@ import com.google.android.exoplayer2.trackselection.TrackSelectorResult;
    * @param trackGroups The track groups for the new position. See {@link #trackGroups}.
    * @param trackSelectorResult The track selector result for the new position. See {@link
    *     #trackSelectorResult}.
+   * @param staticMetadata The static metadata for the track selections. See {@link
+   *     #staticMetadata}.
    * @return Copied playback info with new playing position.
    */
   @CheckResult
@@ -198,7 +209,8 @@ import com.google.android.exoplayer2.trackselection.TrackSelectorResult;
       long requestedContentPositionUs,
       long totalBufferedDurationUs,
       TrackGroupArray trackGroups,
-      TrackSelectorResult trackSelectorResult) {
+      TrackSelectorResult trackSelectorResult,
+      List<Metadata> staticMetadata) {
     return new PlaybackInfo(
         timeline,
         periodId,
@@ -208,6 +220,7 @@ import com.google.android.exoplayer2.trackselection.TrackSelectorResult;
         isLoading,
         trackGroups,
         trackSelectorResult,
+        staticMetadata,
         loadingMediaPeriodId,
         playWhenReady,
         playbackSuppressionReason,
@@ -236,6 +249,7 @@ import com.google.android.exoplayer2.trackselection.TrackSelectorResult;
         isLoading,
         trackGroups,
         trackSelectorResult,
+        staticMetadata,
         loadingMediaPeriodId,
         playWhenReady,
         playbackSuppressionReason,
@@ -264,6 +278,7 @@ import com.google.android.exoplayer2.trackselection.TrackSelectorResult;
         isLoading,
         trackGroups,
         trackSelectorResult,
+        staticMetadata,
         loadingMediaPeriodId,
         playWhenReady,
         playbackSuppressionReason,
@@ -292,6 +307,7 @@ import com.google.android.exoplayer2.trackselection.TrackSelectorResult;
         isLoading,
         trackGroups,
         trackSelectorResult,
+        staticMetadata,
         loadingMediaPeriodId,
         playWhenReady,
         playbackSuppressionReason,
@@ -320,6 +336,7 @@ import com.google.android.exoplayer2.trackselection.TrackSelectorResult;
         isLoading,
         trackGroups,
         trackSelectorResult,
+        staticMetadata,
         loadingMediaPeriodId,
         playWhenReady,
         playbackSuppressionReason,
@@ -348,6 +365,7 @@ import com.google.android.exoplayer2.trackselection.TrackSelectorResult;
         isLoading,
         trackGroups,
         trackSelectorResult,
+        staticMetadata,
         loadingMediaPeriodId,
         playWhenReady,
         playbackSuppressionReason,
@@ -380,6 +398,7 @@ import com.google.android.exoplayer2.trackselection.TrackSelectorResult;
         isLoading,
         trackGroups,
         trackSelectorResult,
+        staticMetadata,
         loadingMediaPeriodId,
         playWhenReady,
         playbackSuppressionReason,
@@ -408,6 +427,7 @@ import com.google.android.exoplayer2.trackselection.TrackSelectorResult;
         isLoading,
         trackGroups,
         trackSelectorResult,
+        staticMetadata,
         loadingMediaPeriodId,
         playWhenReady,
         playbackSuppressionReason,
@@ -437,6 +457,7 @@ import com.google.android.exoplayer2.trackselection.TrackSelectorResult;
         isLoading,
         trackGroups,
         trackSelectorResult,
+        staticMetadata,
         loadingMediaPeriodId,
         playWhenReady,
         playbackSuppressionReason,
@@ -465,6 +486,7 @@ import com.google.android.exoplayer2.trackselection.TrackSelectorResult;
         isLoading,
         trackGroups,
         trackSelectorResult,
+        staticMetadata,
         loadingMediaPeriodId,
         playWhenReady,
         playbackSuppressionReason,

library/core/src/main/java/com/google/android/exoplayer2/Player.java

@@ -28,12 +28,14 @@ import com.google.android.exoplayer2.audio.AudioListener;
 import com.google.android.exoplayer2.audio.AuxEffectInfo;
 import com.google.android.exoplayer2.device.DeviceInfo;
 import com.google.android.exoplayer2.device.DeviceListener;
+import com.google.android.exoplayer2.metadata.Metadata;
 import com.google.android.exoplayer2.metadata.MetadataOutput;
 import com.google.android.exoplayer2.source.TrackGroupArray;
 import com.google.android.exoplayer2.text.Cue;
 import com.google.android.exoplayer2.text.TextOutput;
 import com.google.android.exoplayer2.trackselection.TrackSelectionArray;
 import com.google.android.exoplayer2.trackselection.TrackSelector;
+import com.google.android.exoplayer2.util.StableApiCandidate;
 import com.google.android.exoplayer2.util.Util;
 import com.google.android.exoplayer2.video.VideoDecoderOutputBufferRenderer;
 import com.google.android.exoplayer2.video.VideoFrameMetadataListener;
@@ -491,6 +493,22 @@ public interface Player {
     default void onTracksChanged(
         TrackGroupArray trackGroups, TrackSelectionArray trackSelections) {}
 
+    /**
+     * Called when the static metadata changes.
+     *
+     * <p>The provided {@code metadataList} is an immutable list of {@link Metadata} instances,
+     * where the elements correspond to the {@link #getCurrentTrackSelections() current track
+     * selections}, or an empty list if there are no track selections or the implementation does not
+     * support metadata.
+     *
+     * <p>The metadata is considered static in the sense that it comes from the tracks' declared
+     * Formats, rather than being timed (or dynamic) metadata, which is represented within a
+     * metadata track.
+     *
+     * @param metadataList The static metadata.
+     */
+    default void onStaticMetadataChanged(List<Metadata> metadataList) {}
+
     /**
      * Called when the player starts or stops loading the source.
      *
@@ -1226,16 +1244,25 @@ public interface Player {
   @Nullable
   TrackSelector getTrackSelector();
 
-  /**
+  /** Returns the available track groups. */
-   * Returns the available track groups.
-   */
   TrackGroupArray getCurrentTrackGroups();
 
-  /**
+  /** Returns the current track selections for each renderer. */
-   * Returns the current track selections for each renderer.
-   */
   TrackSelectionArray getCurrentTrackSelections();
 
+  /**
+   * Returns the current static metadata for the track selections.
+   *
+   * <p>The returned {@code metadataList} is an immutable list of {@link Metadata} instances, where
+   * the elements correspond to the {@link #getCurrentTrackSelections() current track selections},
+   * or an empty list if there are no track selections or the implementation does not support
+   * metadata.
+   *
+   * <p>This metadata is considered static in that it comes from the tracks' declared Formats,
+   * rather than being timed (or dynamic) metadata, which is represented within a metadata track.
+   */
+  List<Metadata> getCurrentStaticMetadata();
+
   /**
    * Returns the current manifest. The type depends on the type of media being played. May be null.
    */

library/core/src/main/java/com/google/android/exoplayer2/SimpleExoPlayer.java

@@ -1761,6 +1761,12 @@ public class SimpleExoPlayer extends BasePlayer
     return player.getCurrentTrackSelections();
   }
 
+  @Override
+  public List<Metadata> getCurrentStaticMetadata() {
+    verifyApplicationThread();
+    return player.getCurrentStaticMetadata();
+  }
+
   @Override
   public Timeline getCurrentTimeline() {
     verifyApplicationThread();

library/core/src/main/java/com/google/android/exoplayer2/analytics/AnalyticsCollector.java

@@ -470,6 +470,14 @@ public class AnalyticsCollector
     }
   }
 
+  @Override
+  public final void onStaticMetadataChanged(List<Metadata> metadataList) {
+    EventTime eventTime = generateCurrentPlayerMediaPeriodEventTime();
+    for (AnalyticsListener listener : listeners) {
+      listener.onStaticMetadataChanged(eventTime, metadataList);
+    }
+  }
+
   @Override
   public final void onIsLoadingChanged(boolean isLoading) {
     EventTime eventTime = generateCurrentPlayerMediaPeriodEventTime();

library/core/src/main/java/com/google/android/exoplayer2/analytics/AnalyticsListener.java

@@ -38,6 +38,7 @@ import com.google.android.exoplayer2.source.TrackGroupArray;
 import com.google.android.exoplayer2.trackselection.TrackSelectionArray;
 import com.google.common.base.Objects;
 import java.io.IOException;
+import java.util.List;
 
 /**
  * A listener for analytics events.
@@ -337,6 +338,23 @@ public interface AnalyticsListener {
   default void onTracksChanged(
       EventTime eventTime, TrackGroupArray trackGroups, TrackSelectionArray trackSelections) {}
 
+  /**
+   * Called when the static metadata changes.
+   *
+   * <p>The provided {@code metadataList} is an immutable list of {@link Metadata} instances, where
+   * the elements correspond to the current track selections (as returned by {@link
+   * #onTracksChanged(EventTime, TrackGroupArray, TrackSelectionArray)}, or an empty list if there
+   * are no track selections or the implementation does not support metadata.
+   *
+   * <p>The metadata is considered static in the sense that it comes from the tracks' declared
+   * Formats, rather than being timed (or dynamic) metadata, which is represented within a metadata
+   * track.
+   *
+   * @param eventTime The event time.
+   * @param metadataList The static metadata.
+   */
+  default void onStaticMetadataChanged(EventTime eventTime, List<Metadata> metadataList) {}
+
   /**
    * Called when a media source started loading data.
    *

library/core/src/main/java/com/google/android/exoplayer2/util/EventLogger.java

@@ -45,6 +45,7 @@ import com.google.android.exoplayer2.trackselection.TrackSelection;
 import com.google.android.exoplayer2.trackselection.TrackSelectionArray;
 import java.io.IOException;
 import java.text.NumberFormat;
+import java.util.List;
 import java.util.Locale;
 
 /** Logs events from {@link Player} and other core components using {@link Log}. */
@@ -295,6 +296,16 @@ public class EventLogger implements AnalyticsListener {
     logd("]");
   }
 
+  @Override
+  public void onStaticMetadataChanged(EventTime eventTime, List<Metadata> metadataList) {
+    logd("staticMetadata [" + getEventTimeString(eventTime));
+    for (int i = 0; i < metadataList.size(); i++) {
+      logd("  " + i);
+      printMetadata(metadataList.get(i), "    ");
+    }
+    logd("]");
+  }
+
   @Override
   public void onMetadata(EventTime eventTime, Metadata metadata) {
     logd("metadata [" + getEventTimeString(eventTime));

library/core/src/test/java/com/google/android/exoplayer2/ExoPlayerTest.java

@@ -56,6 +56,8 @@ import com.google.android.exoplayer2.analytics.AnalyticsListener;
 import com.google.android.exoplayer2.audio.AudioAttributes;
 import com.google.android.exoplayer2.drm.DrmSessionEventListener;
 import com.google.android.exoplayer2.drm.DrmSessionManager;
+import com.google.android.exoplayer2.metadata.Metadata;
+import com.google.android.exoplayer2.metadata.id3.TextInformationFrame;
 import com.google.android.exoplayer2.source.ClippingMediaSource;
 import com.google.android.exoplayer2.source.CompositeMediaSource;
 import com.google.android.exoplayer2.source.ConcatenatingMediaSource;
@@ -104,6 +106,7 @@ import com.google.android.exoplayer2.upstream.Loader;
 import com.google.android.exoplayer2.upstream.TransferListener;
 import com.google.android.exoplayer2.util.Assertions;
 import com.google.android.exoplayer2.util.Clock;
+import com.google.android.exoplayer2.util.MimeTypes;
 import com.google.common.collect.ImmutableList;
 import java.io.IOException;
 import java.util.ArrayList;
@@ -8309,6 +8312,54 @@ public final class ExoPlayerTest {
     runUntilPlaybackState(player, Player.STATE_ENDED);
   }
 
+  @Test
+  public void staticMetadata_callbackIsCalledCorrectlyAndMatchesGetter() throws Exception {
+    Format videoFormat =
+        new Format.Builder()
+            .setSampleMimeType(MimeTypes.VIDEO_H264)
+            .setWidth(1920)
+            .setHeight(720)
+            .setMetadata(
+                new Metadata(
+                    new TextInformationFrame(
+                        /* id= */ "TT2",
+                        /* description= */ "Video",
+                        /* value= */ "Video track name")))
+            .build();
+
+    Format audioFormat =
+        new Format.Builder()
+            .setSampleMimeType(MimeTypes.AUDIO_AAC)
+            .setSampleRate(44_000)
+            .setMetadata(
+                new Metadata(
+                    new TextInformationFrame(
+                        /* id= */ "TT2",
+                        /* description= */ "Audio",
+                        /* value= */ "Audio track name")))
+            .build();
+
+    EventListener eventListener = mock(EventListener.class);
+
+    Timeline fakeTimeline =
+        new FakeTimeline(
+            new TimelineWindowDefinition(
+                /* isSeekable= */ true, /* isDynamic= */ false, /* durationUs= */ 100000));
+    SimpleExoPlayer player = new TestExoPlayer.Builder(context).build();
+
+    player.setMediaSource(new FakeMediaSource(fakeTimeline, videoFormat, audioFormat));
+    player.addListener(eventListener);
+    player.prepare();
+    player.play();
+    runUntilPlaybackState(player, Player.STATE_ENDED);
+
+    assertThat(player.getCurrentStaticMetadata())
+        .containsExactly(videoFormat.metadata, audioFormat.metadata)
+        .inOrder();
+    verify(eventListener)
+        .onStaticMetadataChanged(ImmutableList.of(videoFormat.metadata, audioFormat.metadata));
+  }
+
   // Internal methods.
 
   private static ActionSchedule.Builder addSurfaceSwitch(ActionSchedule.Builder builder) {

library/core/src/test/java/com/google/android/exoplayer2/MediaPeriodQueueTest.java

@@ -432,6 +432,7 @@ public final class MediaPeriodQueueTest {
             /* isLoading= */ false,
             /* trackGroups= */ null,
             /* trackSelectorResult= */ null,
+            /* staticMetadata= */ ImmutableList.of(),
             /* loadingMediaPeriodId= */ null,
             /* playWhenReady= */ false,
             Player.PLAYBACK_SUPPRESSION_REASON_NONE,

library/ui/src/main/java/com/google/android/exoplayer2/ui/StyledPlayerView.java

@@ -58,7 +58,6 @@ import com.google.android.exoplayer2.source.TrackGroupArray;
 import com.google.android.exoplayer2.source.ads.AdsLoader;
 import com.google.android.exoplayer2.text.Cue;
 import com.google.android.exoplayer2.text.TextOutput;
-import com.google.android.exoplayer2.trackselection.TrackSelection;
 import com.google.android.exoplayer2.trackselection.TrackSelectionArray;
 import com.google.android.exoplayer2.ui.AspectRatioFrameLayout.ResizeMode;
 import com.google.android.exoplayer2.ui.spherical.SingleTapListener;
@@ -1369,17 +1368,11 @@ public class StyledPlayerView extends FrameLayout implements AdsLoader.AdViewPro
     closeShutter();
     // Display artwork if enabled and available, else hide it.
     if (useArtwork()) {
-      for (int i = 0; i < selections.length; i++) {
+      for (Metadata metadata : player.getCurrentStaticMetadata()) {
-        @Nullable TrackSelection selection = selections.get(i);
+        if (setArtworkFromMetadata(metadata)) {
-        if (selection != null) {
-          for (int j = 0; j < selection.length(); j++) {
-            @Nullable Metadata metadata = selection.getFormat(j).metadata;
-            if (metadata != null && setArtworkFromMetadata(metadata)) {
           return;
         }
       }
-        }
-      }
       if (setDrawableArtwork(defaultArtwork)) {
         return;
       }

testutils/src/main/java/com/google/android/exoplayer2/testutil/StubExoPlayer.java

@@ -26,6 +26,7 @@ import com.google.android.exoplayer2.Player;
 import com.google.android.exoplayer2.PlayerMessage;
 import com.google.android.exoplayer2.SeekParameters;
 import com.google.android.exoplayer2.Timeline;
+import com.google.android.exoplayer2.metadata.Metadata;
 import com.google.android.exoplayer2.source.MediaSource;
 import com.google.android.exoplayer2.source.ShuffleOrder;
 import com.google.android.exoplayer2.source.TrackGroupArray;
@@ -375,6 +376,11 @@ public abstract class StubExoPlayer extends BasePlayer implements ExoPlayer {
     throw new UnsupportedOperationException();
   }
 
+  @Override
+  public List<Metadata> getCurrentStaticMetadata() {
+    throw new UnsupportedOperationException();
+  }
+
   @Override
   public Timeline getCurrentTimeline() {
     throw new UnsupportedOperationException();