androidx/media/MediaUtils2.java - platform/prebuilts/fullsdk/sources/android-28 - Git at Google

 /*
  * Copyright 2018 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */

 package androidx.media;

 import static androidx.media.AudioAttributesCompat.CONTENT_TYPE_UNKNOWN;
 import static androidx.media.AudioAttributesCompat.USAGE_UNKNOWN;
 import static androidx.media.MediaMetadata2.METADATA_KEY_DISPLAY_DESCRIPTION;
 import static androidx.media.MediaMetadata2.METADATA_KEY_DISPLAY_ICON;
 import static androidx.media.MediaMetadata2.METADATA_KEY_DISPLAY_ICON_URI;
 import static androidx.media.MediaMetadata2.METADATA_KEY_DISPLAY_SUBTITLE;
 import static androidx.media.MediaMetadata2.METADATA_KEY_DISPLAY_TITLE;
 import static androidx.media.MediaMetadata2.METADATA_KEY_EXTRAS;
 import static androidx.media.MediaMetadata2.METADATA_KEY_MEDIA_ID;
 import static androidx.media.MediaMetadata2.METADATA_KEY_MEDIA_URI;
 import static androidx.media.MediaMetadata2.METADATA_KEY_TITLE;

 import android.graphics.Bitmap;
 import android.net.Uri;
 import android.os.Bundle;
 import android.os.Parcelable;
 import android.support.v4.media.MediaBrowserCompat.MediaItem;
 import android.support.v4.media.MediaDescriptionCompat;
 import android.support.v4.media.MediaMetadataCompat;
 import android.support.v4.media.RatingCompat;
 import android.support.v4.media.session.PlaybackStateCompat;

 import androidx.media.MediaSession2.CommandButton;

 import java.util.ArrayList;
 import java.util.List;

 class MediaUtils2 {
     static final String AUDIO_ATTRIBUTES_USAGE = "androidx.media.audio_attrs.USAGE";
     static final String AUDIO_ATTRIBUTES_CONTENT_TYPE = "androidx.media.audio_attrs.CONTENT_TYPE";
     static final String AUDIO_ATTRIBUTES_FLAGS = "androidx.media.audio_attrs.FLAGS";

     private MediaUtils2() {
     }

     /**
      * Creates a {@link MediaItem} from the {@link MediaItem2}.
      *
      * @param item2 an item.
      * @return The newly created media item.
      */
     static MediaItem createMediaItem(MediaItem2 item2) {
         if (item2 == null) {
             return null;
         }
         MediaDescriptionCompat descCompat;

         MediaMetadata2 metadata = item2.getMetadata();
         if (metadata == null) {
             descCompat = new MediaDescriptionCompat.Builder()
                     .setMediaId(item2.getMediaId())
                     .build();
         } else {
             MediaDescriptionCompat.Builder builder = new MediaDescriptionCompat.Builder()
                     .setMediaId(item2.getMediaId())
                     .setSubtitle(metadata.getText(METADATA_KEY_DISPLAY_SUBTITLE))
                     .setDescription(metadata.getText(METADATA_KEY_DISPLAY_DESCRIPTION))
                     .setIconBitmap(metadata.getBitmap(METADATA_KEY_DISPLAY_ICON))
                     .setExtras(metadata.getExtras());

             String title = metadata.getString(METADATA_KEY_TITLE);
             if (title != null) {
                 builder.setTitle(title);
             } else {
                 builder.setTitle(metadata.getString(METADATA_KEY_DISPLAY_TITLE));
             }

             String displayIconUri = metadata.getString(METADATA_KEY_DISPLAY_ICON_URI);
             if (displayIconUri != null) {
                 builder.setIconUri(Uri.parse(displayIconUri));
             }

             String mediaUri = metadata.getString(METADATA_KEY_MEDIA_URI);
             if (mediaUri != null) {
                 builder.setMediaUri(Uri.parse(mediaUri));
             }

             descCompat = builder.build();
         }
         return new MediaItem(descCompat, item2.getFlags());
     }

     /**
      * Creates a {@link MediaItem2} from the {@link MediaItem}.
      *
      * @param item an item.
      * @return The newly created media item.
      */
     static MediaItem2 createMediaItem2(MediaItem item) {
         if (item == null || item.getMediaId() == null) {
             return null;
         }

         MediaMetadata2 metadata2 = createMediaMetadata2(item.getDescription());
         return new MediaItem2.Builder(item.getFlags())
                 .setMediaId(item.getMediaId())
                 .setMetadata(metadata2)
                 .build();
     }

     /**
      * Creates a {@link MediaMetadata2} from the {@link MediaDescriptionCompat}.
      *
      * @param descCompat A {@link MediaDescriptionCompat} object.
      * @return The newly created {@link MediaMetadata2} object.
      */
     static MediaMetadata2 createMediaMetadata2(MediaDescriptionCompat descCompat) {
         if (descCompat == null) {
             return null;
         }

         MediaMetadata2.Builder metadata2Builder = new MediaMetadata2.Builder();
         metadata2Builder.putString(METADATA_KEY_MEDIA_ID, descCompat.getMediaId());

         CharSequence title = descCompat.getTitle();
         if (title != null) {
             metadata2Builder.putText(METADATA_KEY_DISPLAY_TITLE, title);
         }

         CharSequence description = descCompat.getDescription();
         if (description != null) {
             metadata2Builder.putText(METADATA_KEY_DISPLAY_DESCRIPTION, descCompat.getDescription());
         }

         CharSequence subtitle = descCompat.getSubtitle();
         if (subtitle != null) {
             metadata2Builder.putText(METADATA_KEY_DISPLAY_SUBTITLE, subtitle);
         }

         Bitmap icon = descCompat.getIconBitmap();
         if (icon != null) {
             metadata2Builder.putBitmap(METADATA_KEY_DISPLAY_ICON, icon);
         }

         Uri iconUri = descCompat.getIconUri();
         if (iconUri != null) {
             metadata2Builder.putText(METADATA_KEY_DISPLAY_ICON_URI, iconUri.toString());
         }

         Bundle bundle = descCompat.getExtras();
         if (bundle != null) {
             metadata2Builder.setExtras(descCompat.getExtras());
         }

         Uri mediaUri = descCompat.getMediaUri();
         if (mediaUri != null) {
             metadata2Builder.putText(METADATA_KEY_MEDIA_URI, mediaUri.toString());
         }

         return metadata2Builder.build();
     }

     /**
      * Creates a {@link MediaMetadata2} from the {@link MediaMetadataCompat}.
      *
      * @param metadataCompat A {@link MediaMetadataCompat} object.
      * @return The newly created {@link MediaMetadata2} object.
      */
     MediaMetadata2 createMediaMetadata2(MediaMetadataCompat metadataCompat) {
         if (metadataCompat == null) {
             return null;
         }
         return new MediaMetadata2(metadataCompat.getBundle());
     }

     /**
      * Creates a {@link MediaMetadataCompat} from the {@link MediaMetadata2}.
      *
      * @param metadata2 A {@link MediaMetadata2} object.
      * @return The newly created {@link MediaMetadataCompat} object.
      */
     MediaMetadataCompat createMediaMetadataCompat(MediaMetadata2 metadata2) {
         if (metadata2 == null) {
             return null;
         }

         MediaMetadataCompat.Builder builder = new MediaMetadataCompat.Builder();

         List<String> skippedKeys = new ArrayList<>();
         Bundle bundle = metadata2.toBundle();
         for (String key : bundle.keySet()) {
             Object value = bundle.get(key);
             if (value instanceof CharSequence) {
                 builder.putText(key, (CharSequence) value);
             } else if (value instanceof Rating2) {
                 builder.putRating(key, createRatingCompat((Rating2) value));
             } else if (value instanceof Bitmap) {
                 builder.putBitmap(key, (Bitmap) value);
             } else if (value instanceof Long) {
                 builder.putLong(key, (Long) value);
             } else {
                 // There is no 'float' or 'bundle' type in MediaMetadataCompat.
                 skippedKeys.add(key);
             }
         }

         MediaMetadataCompat result = builder.build();
         for (String key : skippedKeys) {
             Object value = bundle.get(key);
             if (value instanceof Float) {
                 // Compatibility for MediaMetadata2.Builder.putFloat()
                 result.getBundle().putFloat(key, (Float) value);
             } else if (METADATA_KEY_EXTRAS.equals(value)) {
                 // Compatibility for MediaMetadata2.Builder.setExtras()
                 result.getBundle().putBundle(key, (Bundle) value);
             }
         }
         return result;
     }

     /**
      * Creates a {@link Rating2} from the {@link RatingCompat}.
      *
      * @param ratingCompat A {@link RatingCompat} object.
      * @return The newly created {@link Rating2} object.
      */
     Rating2 createRating2(RatingCompat ratingCompat) {
         if (ratingCompat == null) {
             return null;
         }
         if (!ratingCompat.isRated()) {
             return Rating2.newUnratedRating(ratingCompat.getRatingStyle());
         }

         switch (ratingCompat.getRatingStyle()) {
             case RatingCompat.RATING_3_STARS:
             case RatingCompat.RATING_4_STARS:
             case RatingCompat.RATING_5_STARS:
                 return Rating2.newStarRating(
                         ratingCompat.getRatingStyle(), ratingCompat.getStarRating());
             case RatingCompat.RATING_HEART:
                 return Rating2.newHeartRating(ratingCompat.hasHeart());
             case RatingCompat.RATING_THUMB_UP_DOWN:
                 return Rating2.newThumbRating(ratingCompat.isThumbUp());
             case RatingCompat.RATING_PERCENTAGE:
                 return Rating2.newPercentageRating(ratingCompat.getPercentRating());
             default:
                 return null;
         }
     }

     /**
      * Creates a {@link RatingCompat} from the {@link Rating2}.
      *
      * @param rating2 A {@link Rating2} object.
      * @return The newly created {@link RatingCompat} object.
      */
     RatingCompat createRatingCompat(Rating2 rating2) {
         if (rating2 == null) {
             return null;
         }
         if (!rating2.isRated()) {
             return RatingCompat.newUnratedRating(rating2.getRatingStyle());
         }

         switch (rating2.getRatingStyle()) {
             case Rating2.RATING_3_STARS:
             case Rating2.RATING_4_STARS:
             case Rating2.RATING_5_STARS:
                 return RatingCompat.newStarRating(
                         rating2.getRatingStyle(), rating2.getStarRating());
             case Rating2.RATING_HEART:
                 return RatingCompat.newHeartRating(rating2.hasHeart());
             case Rating2.RATING_THUMB_UP_DOWN:
                 return RatingCompat.newThumbRating(rating2.isThumbUp());
             case Rating2.RATING_PERCENTAGE:
                 return RatingCompat.newPercentageRating(rating2.getPercentRating());
             default:
                 return null;
         }
     }

     static Parcelable[] toMediaItem2ParcelableArray(List<MediaItem2> playlist) {
         if (playlist == null) {
             return null;
         }
         List<Parcelable> parcelableList = new ArrayList<>();
         for (int i = 0; i < playlist.size(); i++) {
             final MediaItem2 item = playlist.get(i);
             if (item != null) {
                 final Parcelable itemBundle = item.toBundle();
                 if (itemBundle != null) {
                     parcelableList.add(itemBundle);
                 }
             }
         }
         return parcelableList.toArray(new Parcelable[0]);
     }

     static List<MediaItem2> fromMediaItem2ParcelableArray(Parcelable[] itemParcelableList) {
         List<MediaItem2> playlist = new ArrayList<>();
         if (itemParcelableList != null) {
             for (int i = 0; i < itemParcelableList.length; i++) {
                 if (!(itemParcelableList[i] instanceof Bundle)) {
                     continue;
                 }
                 MediaItem2 item = MediaItem2.fromBundle((Bundle) itemParcelableList[i]);
                 if (item != null) {
                     playlist.add(item);
                 }
             }
         }
         return playlist;
     }

     static Parcelable[] toCommandButtonParcelableArray(List<CommandButton> layout) {
         if (layout == null) {
             return null;
         }
         List<Bundle> layoutBundles = new ArrayList<>();
         for (int i = 0; i < layout.size(); i++) {
             Bundle bundle = layout.get(i).toBundle();
             if (bundle != null) {
                 layoutBundles.add(bundle);
             }
         }
         return layoutBundles.toArray(new Parcelable[0]);
     }

     static List<CommandButton> fromCommandButtonParcelableArray(Parcelable[] list) {
         List<CommandButton> layout = new ArrayList<>();
         if (layout != null) {
             for (int i = 0; i < list.length; i++) {
                 if (!(list[i] instanceof Bundle)) {
                     continue;
                 }
                 CommandButton button = CommandButton.fromBundle((Bundle) list[i]);
                 if (button != null) {
                     layout.add(button);
                 }
             }
         }
         return layout;
     }

     static Bundle toAudioAttributesBundle(AudioAttributesCompat attrs) {
         if (attrs == null) {
             return null;
         }
         Bundle bundle = new Bundle();
         bundle.putInt(AUDIO_ATTRIBUTES_USAGE, attrs.getUsage());
         bundle.putInt(AUDIO_ATTRIBUTES_CONTENT_TYPE, attrs.getContentType());
         bundle.putInt(AUDIO_ATTRIBUTES_FLAGS, attrs.getFlags());
         return bundle;
     }

     static AudioAttributesCompat fromAudioAttributesBundle(Bundle bundle) {
         if (bundle == null) {
             return null;
         }
         return new AudioAttributesCompat.Builder()
                 .setUsage(bundle.getInt(AUDIO_ATTRIBUTES_USAGE, USAGE_UNKNOWN))
                 .setContentType(bundle.getInt(AUDIO_ATTRIBUTES_CONTENT_TYPE, CONTENT_TYPE_UNKNOWN))
                 .setFlags(bundle.getInt(AUDIO_ATTRIBUTES_FLAGS, 0))
                 .build();
     }

     static List<Bundle> toBundleList(Parcelable[] array) {
         if (array == null) {
             return null;
         }
         List<Bundle> bundleList = new ArrayList<>();
         for (Parcelable p : array) {
             bundleList.add((Bundle) p);
         }
         return bundleList;
     }

     static int createPlaybackStateCompatState(int playerState, int bufferingState) {
         switch (playerState) {
             case MediaPlayerBase.PLAYER_STATE_PLAYING:
                 switch (bufferingState) {
                     case MediaPlayerBase.BUFFERING_STATE_BUFFERING_AND_STARVED:
                         return PlaybackStateCompat.STATE_BUFFERING;
                 }
                 return PlaybackStateCompat.STATE_PLAYING;
             case MediaPlayerBase.PLAYER_STATE_PAUSED:
                 return PlaybackStateCompat.STATE_PAUSED;
             case MediaPlayerBase.PLAYER_STATE_IDLE:
                 return PlaybackStateCompat.STATE_NONE;
             case MediaPlayerBase.PLAYER_STATE_ERROR:
                 return PlaybackStateCompat.STATE_ERROR;
         }
         // For unknown value
         return PlaybackStateCompat.STATE_ERROR;
     }

     static int toPlayerState(int playbackStateCompatState) {
         switch (playbackStateCompatState) {
             case PlaybackStateCompat.STATE_ERROR:
                 return MediaPlayerBase.PLAYER_STATE_ERROR;
             case PlaybackStateCompat.STATE_NONE:
                 return MediaPlayerBase.PLAYER_STATE_IDLE;
             case PlaybackStateCompat.STATE_PAUSED:
             case PlaybackStateCompat.STATE_STOPPED:
             case PlaybackStateCompat.STATE_BUFFERING: // means paused for buffering.
                 return MediaPlayerBase.PLAYER_STATE_PAUSED;
             case PlaybackStateCompat.STATE_FAST_FORWARDING:
             case PlaybackStateCompat.STATE_PLAYING:
             case PlaybackStateCompat.STATE_REWINDING:
             case PlaybackStateCompat.STATE_SKIPPING_TO_NEXT:
             case PlaybackStateCompat.STATE_SKIPPING_TO_PREVIOUS:
             case PlaybackStateCompat.STATE_SKIPPING_TO_QUEUE_ITEM:
             case PlaybackStateCompat.STATE_CONNECTING: // Note: there's no perfect match for this.
                 return MediaPlayerBase.PLAYER_STATE_PLAYING;
         }
         return MediaPlayerBase.PLAYER_STATE_ERROR;
     }

     static boolean isDefaultLibraryRootHint(Bundle bundle) {
         return bundle != null && bundle.getBoolean(MediaConstants2.ROOT_EXTRA_DEFAULT, false);
     }
 }
	/*
	* Copyright 2018 The Android Open Source Project
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	package androidx.media;

	import static androidx.media.AudioAttributesCompat.CONTENT_TYPE_UNKNOWN;
	import static androidx.media.AudioAttributesCompat.USAGE_UNKNOWN;
	import static androidx.media.MediaMetadata2.METADATA_KEY_DISPLAY_DESCRIPTION;
	import static androidx.media.MediaMetadata2.METADATA_KEY_DISPLAY_ICON;
	import static androidx.media.MediaMetadata2.METADATA_KEY_DISPLAY_ICON_URI;
	import static androidx.media.MediaMetadata2.METADATA_KEY_DISPLAY_SUBTITLE;
	import static androidx.media.MediaMetadata2.METADATA_KEY_DISPLAY_TITLE;
	import static androidx.media.MediaMetadata2.METADATA_KEY_EXTRAS;
	import static androidx.media.MediaMetadata2.METADATA_KEY_MEDIA_ID;
	import static androidx.media.MediaMetadata2.METADATA_KEY_MEDIA_URI;
	import static androidx.media.MediaMetadata2.METADATA_KEY_TITLE;

	import android.graphics.Bitmap;
	import android.net.Uri;
	import android.os.Bundle;
	import android.os.Parcelable;
	import android.support.v4.media.MediaBrowserCompat.MediaItem;
	import android.support.v4.media.MediaDescriptionCompat;
	import android.support.v4.media.MediaMetadataCompat;
	import android.support.v4.media.RatingCompat;
	import android.support.v4.media.session.PlaybackStateCompat;

	import androidx.media.MediaSession2.CommandButton;

	import java.util.ArrayList;
	import java.util.List;

	class MediaUtils2 {
	static final String AUDIO_ATTRIBUTES_USAGE = "androidx.media.audio_attrs.USAGE";
	static final String AUDIO_ATTRIBUTES_CONTENT_TYPE = "androidx.media.audio_attrs.CONTENT_TYPE";
	static final String AUDIO_ATTRIBUTES_FLAGS = "androidx.media.audio_attrs.FLAGS";

	private MediaUtils2() {
	}

	/**
	* Creates a {@link MediaItem} from the {@link MediaItem2}.
	*
	* @param item2 an item.
	* @return The newly created media item.
	*/
	static MediaItem createMediaItem(MediaItem2 item2) {
	if (item2 == null) {
	return null;
	}
	MediaDescriptionCompat descCompat;

	MediaMetadata2 metadata = item2.getMetadata();
	if (metadata == null) {
	descCompat = new MediaDescriptionCompat.Builder()
	.setMediaId(item2.getMediaId())
	.build();
	} else {
	MediaDescriptionCompat.Builder builder = new MediaDescriptionCompat.Builder()
	.setMediaId(item2.getMediaId())
	.setSubtitle(metadata.getText(METADATA_KEY_DISPLAY_SUBTITLE))
	.setDescription(metadata.getText(METADATA_KEY_DISPLAY_DESCRIPTION))
	.setIconBitmap(metadata.getBitmap(METADATA_KEY_DISPLAY_ICON))
	.setExtras(metadata.getExtras());

	String title = metadata.getString(METADATA_KEY_TITLE);
	if (title != null) {
	builder.setTitle(title);
	} else {
	builder.setTitle(metadata.getString(METADATA_KEY_DISPLAY_TITLE));
	}

	String displayIconUri = metadata.getString(METADATA_KEY_DISPLAY_ICON_URI);
	if (displayIconUri != null) {
	builder.setIconUri(Uri.parse(displayIconUri));
	}

	String mediaUri = metadata.getString(METADATA_KEY_MEDIA_URI);
	if (mediaUri != null) {
	builder.setMediaUri(Uri.parse(mediaUri));
	}

	descCompat = builder.build();
	}
	return new MediaItem(descCompat, item2.getFlags());
	}

	/**
	* Creates a {@link MediaItem2} from the {@link MediaItem}.
	*
	* @param item an item.
	* @return The newly created media item.
	*/
	static MediaItem2 createMediaItem2(MediaItem item) {
	if (item == null \|\| item.getMediaId() == null) {
	return null;
	}

	MediaMetadata2 metadata2 = createMediaMetadata2(item.getDescription());
	return new MediaItem2.Builder(item.getFlags())
	.setMediaId(item.getMediaId())
	.setMetadata(metadata2)
	.build();
	}

	/**
	* Creates a {@link MediaMetadata2} from the {@link MediaDescriptionCompat}.
	*
	* @param descCompat A {@link MediaDescriptionCompat} object.
	* @return The newly created {@link MediaMetadata2} object.
	*/
	static MediaMetadata2 createMediaMetadata2(MediaDescriptionCompat descCompat) {
	if (descCompat == null) {
	return null;
	}

	MediaMetadata2.Builder metadata2Builder = new MediaMetadata2.Builder();
	metadata2Builder.putString(METADATA_KEY_MEDIA_ID, descCompat.getMediaId());

	CharSequence title = descCompat.getTitle();
	if (title != null) {
	metadata2Builder.putText(METADATA_KEY_DISPLAY_TITLE, title);
	}

	CharSequence description = descCompat.getDescription();
	if (description != null) {
	metadata2Builder.putText(METADATA_KEY_DISPLAY_DESCRIPTION, descCompat.getDescription());
	}

	CharSequence subtitle = descCompat.getSubtitle();
	if (subtitle != null) {
	metadata2Builder.putText(METADATA_KEY_DISPLAY_SUBTITLE, subtitle);
	}

	Bitmap icon = descCompat.getIconBitmap();
	if (icon != null) {
	metadata2Builder.putBitmap(METADATA_KEY_DISPLAY_ICON, icon);
	}

	Uri iconUri = descCompat.getIconUri();
	if (iconUri != null) {
	metadata2Builder.putText(METADATA_KEY_DISPLAY_ICON_URI, iconUri.toString());
	}

	Bundle bundle = descCompat.getExtras();
	if (bundle != null) {
	metadata2Builder.setExtras(descCompat.getExtras());
	}

	Uri mediaUri = descCompat.getMediaUri();
	if (mediaUri != null) {
	metadata2Builder.putText(METADATA_KEY_MEDIA_URI, mediaUri.toString());
	}

	return metadata2Builder.build();
	}

	/**
	* Creates a {@link MediaMetadata2} from the {@link MediaMetadataCompat}.
	*
	* @param metadataCompat A {@link MediaMetadataCompat} object.
	* @return The newly created {@link MediaMetadata2} object.
	*/
	MediaMetadata2 createMediaMetadata2(MediaMetadataCompat metadataCompat) {
	if (metadataCompat == null) {
	return null;
	}
	return new MediaMetadata2(metadataCompat.getBundle());
	}

	/**
	* Creates a {@link MediaMetadataCompat} from the {@link MediaMetadata2}.
	*
	* @param metadata2 A {@link MediaMetadata2} object.
	* @return The newly created {@link MediaMetadataCompat} object.
	*/
	MediaMetadataCompat createMediaMetadataCompat(MediaMetadata2 metadata2) {
	if (metadata2 == null) {
	return null;
	}

	MediaMetadataCompat.Builder builder = new MediaMetadataCompat.Builder();

	List<String> skippedKeys = new ArrayList<>();
	Bundle bundle = metadata2.toBundle();
	for (String key : bundle.keySet()) {
	Object value = bundle.get(key);
	if (value instanceof CharSequence) {
	builder.putText(key, (CharSequence) value);
	} else if (value instanceof Rating2) {
	builder.putRating(key, createRatingCompat((Rating2) value));
	} else if (value instanceof Bitmap) {
	builder.putBitmap(key, (Bitmap) value);
	} else if (value instanceof Long) {
	builder.putLong(key, (Long) value);
	} else {
	// There is no 'float' or 'bundle' type in MediaMetadataCompat.
	skippedKeys.add(key);
	}
	}

	MediaMetadataCompat result = builder.build();
	for (String key : skippedKeys) {
	Object value = bundle.get(key);
	if (value instanceof Float) {
	// Compatibility for MediaMetadata2.Builder.putFloat()
	result.getBundle().putFloat(key, (Float) value);
	} else if (METADATA_KEY_EXTRAS.equals(value)) {
	// Compatibility for MediaMetadata2.Builder.setExtras()
	result.getBundle().putBundle(key, (Bundle) value);
	}
	}
	return result;
	}

	/**
	* Creates a {@link Rating2} from the {@link RatingCompat}.
	*
	* @param ratingCompat A {@link RatingCompat} object.
	* @return The newly created {@link Rating2} object.
	*/
	Rating2 createRating2(RatingCompat ratingCompat) {
	if (ratingCompat == null) {
	return null;
	}
	if (!ratingCompat.isRated()) {
	return Rating2.newUnratedRating(ratingCompat.getRatingStyle());
	}

	switch (ratingCompat.getRatingStyle()) {
	case RatingCompat.RATING_3_STARS:
	case RatingCompat.RATING_4_STARS:
	case RatingCompat.RATING_5_STARS:
	return Rating2.newStarRating(
	ratingCompat.getRatingStyle(), ratingCompat.getStarRating());
	case RatingCompat.RATING_HEART:
	return Rating2.newHeartRating(ratingCompat.hasHeart());
	case RatingCompat.RATING_THUMB_UP_DOWN:
	return Rating2.newThumbRating(ratingCompat.isThumbUp());
	case RatingCompat.RATING_PERCENTAGE:
	return Rating2.newPercentageRating(ratingCompat.getPercentRating());
	default:
	return null;
	}
	}

	/**
	* Creates a {@link RatingCompat} from the {@link Rating2}.
	*
	* @param rating2 A {@link Rating2} object.
	* @return The newly created {@link RatingCompat} object.
	*/
	RatingCompat createRatingCompat(Rating2 rating2) {
	if (rating2 == null) {
	return null;
	}
	if (!rating2.isRated()) {
	return RatingCompat.newUnratedRating(rating2.getRatingStyle());
	}

	switch (rating2.getRatingStyle()) {
	case Rating2.RATING_3_STARS:
	case Rating2.RATING_4_STARS:
	case Rating2.RATING_5_STARS:
	return RatingCompat.newStarRating(
	rating2.getRatingStyle(), rating2.getStarRating());
	case Rating2.RATING_HEART:
	return RatingCompat.newHeartRating(rating2.hasHeart());
	case Rating2.RATING_THUMB_UP_DOWN:
	return RatingCompat.newThumbRating(rating2.isThumbUp());
	case Rating2.RATING_PERCENTAGE:
	return RatingCompat.newPercentageRating(rating2.getPercentRating());
	default:
	return null;
	}
	}

	static Parcelable[] toMediaItem2ParcelableArray(List<MediaItem2> playlist) {
	if (playlist == null) {
	return null;
	}
	List<Parcelable> parcelableList = new ArrayList<>();
	for (int i = 0; i < playlist.size(); i++) {
	final MediaItem2 item = playlist.get(i);
	if (item != null) {
	final Parcelable itemBundle = item.toBundle();
	if (itemBundle != null) {
	parcelableList.add(itemBundle);
	}
	}
	}
	return parcelableList.toArray(new Parcelable[0]);
	}

	static List<MediaItem2> fromMediaItem2ParcelableArray(Parcelable[] itemParcelableList) {
	List<MediaItem2> playlist = new ArrayList<>();
	if (itemParcelableList != null) {
	for (int i = 0; i < itemParcelableList.length; i++) {
	if (!(itemParcelableList[i] instanceof Bundle)) {
	continue;
	}
	MediaItem2 item = MediaItem2.fromBundle((Bundle) itemParcelableList[i]);
	if (item != null) {
	playlist.add(item);
	}
	}
	}
	return playlist;
	}

	static Parcelable[] toCommandButtonParcelableArray(List<CommandButton> layout) {
	if (layout == null) {
	return null;
	}
	List<Bundle> layoutBundles = new ArrayList<>();
	for (int i = 0; i < layout.size(); i++) {
	Bundle bundle = layout.get(i).toBundle();
	if (bundle != null) {
	layoutBundles.add(bundle);
	}
	}
	return layoutBundles.toArray(new Parcelable[0]);
	}

	static List<CommandButton> fromCommandButtonParcelableArray(Parcelable[] list) {
	List<CommandButton> layout = new ArrayList<>();
	if (layout != null) {
	for (int i = 0; i < list.length; i++) {
	if (!(list[i] instanceof Bundle)) {
	continue;
	}
	CommandButton button = CommandButton.fromBundle((Bundle) list[i]);
	if (button != null) {
	layout.add(button);
	}
	}
	}
	return layout;
	}

	static Bundle toAudioAttributesBundle(AudioAttributesCompat attrs) {
	if (attrs == null) {
	return null;
	}
	Bundle bundle = new Bundle();
	bundle.putInt(AUDIO_ATTRIBUTES_USAGE, attrs.getUsage());
	bundle.putInt(AUDIO_ATTRIBUTES_CONTENT_TYPE, attrs.getContentType());
	bundle.putInt(AUDIO_ATTRIBUTES_FLAGS, attrs.getFlags());
	return bundle;
	}

	static AudioAttributesCompat fromAudioAttributesBundle(Bundle bundle) {
	if (bundle == null) {
	return null;
	}
	return new AudioAttributesCompat.Builder()
	.setUsage(bundle.getInt(AUDIO_ATTRIBUTES_USAGE, USAGE_UNKNOWN))
	.setContentType(bundle.getInt(AUDIO_ATTRIBUTES_CONTENT_TYPE, CONTENT_TYPE_UNKNOWN))
	.setFlags(bundle.getInt(AUDIO_ATTRIBUTES_FLAGS, 0))
	.build();
	}

	static List<Bundle> toBundleList(Parcelable[] array) {
	if (array == null) {
	return null;
	}
	List<Bundle> bundleList = new ArrayList<>();
	for (Parcelable p : array) {
	bundleList.add((Bundle) p);
	}
	return bundleList;
	}

	static int createPlaybackStateCompatState(int playerState, int bufferingState) {
	switch (playerState) {
	case MediaPlayerBase.PLAYER_STATE_PLAYING:
	switch (bufferingState) {
	case MediaPlayerBase.BUFFERING_STATE_BUFFERING_AND_STARVED:
	return PlaybackStateCompat.STATE_BUFFERING;
	}
	return PlaybackStateCompat.STATE_PLAYING;
	case MediaPlayerBase.PLAYER_STATE_PAUSED:
	return PlaybackStateCompat.STATE_PAUSED;
	case MediaPlayerBase.PLAYER_STATE_IDLE:
	return PlaybackStateCompat.STATE_NONE;
	case MediaPlayerBase.PLAYER_STATE_ERROR:
	return PlaybackStateCompat.STATE_ERROR;
	}
	// For unknown value
	return PlaybackStateCompat.STATE_ERROR;
	}

	static int toPlayerState(int playbackStateCompatState) {
	switch (playbackStateCompatState) {
	case PlaybackStateCompat.STATE_ERROR:
	return MediaPlayerBase.PLAYER_STATE_ERROR;
	case PlaybackStateCompat.STATE_NONE:
	return MediaPlayerBase.PLAYER_STATE_IDLE;
	case PlaybackStateCompat.STATE_PAUSED:
	case PlaybackStateCompat.STATE_STOPPED:
	case PlaybackStateCompat.STATE_BUFFERING: // means paused for buffering.
	return MediaPlayerBase.PLAYER_STATE_PAUSED;
	case PlaybackStateCompat.STATE_FAST_FORWARDING:
	case PlaybackStateCompat.STATE_PLAYING:
	case PlaybackStateCompat.STATE_REWINDING:
	case PlaybackStateCompat.STATE_SKIPPING_TO_NEXT:
	case PlaybackStateCompat.STATE_SKIPPING_TO_PREVIOUS:
	case PlaybackStateCompat.STATE_SKIPPING_TO_QUEUE_ITEM:
	case PlaybackStateCompat.STATE_CONNECTING: // Note: there's no perfect match for this.
	return MediaPlayerBase.PLAYER_STATE_PLAYING;
	}
	return MediaPlayerBase.PLAYER_STATE_ERROR;
	}

	static boolean isDefaultLibraryRootHint(Bundle bundle) {
	return bundle != null && bundle.getBoolean(MediaConstants2.ROOT_EXTRA_DEFAULT, false);
	}
	}