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Optionally deduplicate updating MediaMetadataCompat

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PiperOrigin-RevId: 372146631
This commit is contained in:
bachinger 2021-05-05 17:47:39 +01:00
parent 1f83926d2f
commit 5595c48739
1 changed files with 62 additions and 0 deletions
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62
extensions/mediasession/src/main/java/com/google/android/exoplayer2/ext/mediasession/MediaSessionConnector.java
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@ -59,6 +59,7 @@ import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.checkerframework.checker.nullness.qual.EnsuresNonNullIf;
/**
@ -420,6 +421,45 @@ public final class MediaSessionConnector {
* @return The {@link MediaMetadataCompat} to be published to the session.
*/
MediaMetadataCompat getMetadata(Player player);
/** Returns whether the old and the new metadata are considered the same. */
default boolean sameAs(MediaMetadataCompat oldMetadata, MediaMetadataCompat newMetadata) {
if (oldMetadata == newMetadata) {
return true;
}
if (oldMetadata.size() != newMetadata.size()) {
return false;
}
Set<String> oldKeySet = oldMetadata.keySet();
Bundle oldMetadataBundle = oldMetadata.getBundle();
Bundle newMetadataBundle = newMetadata.getBundle();
for (String key : oldKeySet) {
Object oldProperty = oldMetadataBundle.get(key);
Object newProperty = newMetadataBundle.get(key);
if (oldProperty == newProperty) {
continue;
}
if (oldProperty instanceof Bitmap && newProperty instanceof Bitmap) {
if (!((Bitmap) oldProperty).sameAs(((Bitmap) newProperty))) {
return false;
}
} else if (oldProperty instanceof RatingCompat && newProperty instanceof RatingCompat) {
RatingCompat oldRating = (RatingCompat) oldProperty;
RatingCompat newRating = (RatingCompat) newProperty;
if (oldRating.hasHeart() != newRating.hasHeart()
|| oldRating.isRated() != newRating.isRated()
|| oldRating.isThumbUp() != newRating.isThumbUp()
|| oldRating.getPercentRating() != newRating.getPercentRating()
|| oldRating.getStarRating() != newRating.getStarRating()
|| oldRating.getRatingStyle() != newRating.getRatingStyle()) {
return false;
}
} else if (!Util.areEqual(oldProperty, newProperty)) {
return false;
}
}
return true;
}
}
/** The wrapped {@link MediaSessionCompat}. */
@ -446,6 +486,7 @@ public final class MediaSessionConnector {
@Nullable private MediaButtonEventHandler mediaButtonEventHandler;
private long enabledPlaybackActions;
private boolean metadataDeduplicationEnabled;
/**
* Creates an instance.
@ -684,6 +725,19 @@ public final class MediaSessionConnector {
}
}
/**
* Sets whether {@link MediaMetadataProvider#sameAs(MediaMetadataCompat, MediaMetadataCompat)}
* should be consulted before calling {@link MediaSessionCompat#setMetadata(MediaMetadataCompat)}.
*
* <p>Note that this comparison is normally only required when you are using media sources that
* may introduce duplicate updates of the metadata for the same media item (e.g. live streams).
*
* @param metadataDeduplicationEnabled Whether to deduplicate metadata objects on invalidation.
*/
public void setMetadataDeduplicationEnabled(boolean metadataDeduplicationEnabled) {
this.metadataDeduplicationEnabled = metadataDeduplicationEnabled;
}
/**
* Updates the metadata of the media session.
*
@ -698,6 +752,14 @@ public final class MediaSessionConnector {
mediaMetadataProvider != null && player != null
? mediaMetadataProvider.getMetadata(player)
: METADATA_EMPTY;
@Nullable MediaMetadataProvider mediaMetadataProvider = this.mediaMetadataProvider;
if (metadataDeduplicationEnabled && mediaMetadataProvider != null) {
@Nullable MediaMetadataCompat oldMetadata = mediaSession.getController().getMetadata();
if (oldMetadata != null && mediaMetadataProvider.sameAs(oldMetadata, metadata)) {
// Do not update if metadata did not change.
return;
}
}
mediaSession.setMetadata(metadata);
}