BitmapLoader.java
/*
* Copyright 2022 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.media3.session;
import android.graphics.Bitmap;
import android.net.Uri;
import androidx.annotation.Nullable;
import androidx.media3.common.MediaMetadata;
import androidx.media3.common.util.UnstableApi;
import com.google.common.util.concurrent.ListenableFuture;
/** Loads images. */
@UnstableApi
public interface BitmapLoader {
/** Decodes an image from compressed binary data. */
ListenableFuture<Bitmap> decodeBitmap(byte[] data);
/** Loads an image from {@code uri}. */
ListenableFuture<Bitmap> loadBitmap(Uri uri);
/**
* Loads an image from {@link MediaMetadata}. Returns null if {@code metadata} doesn't contain
* bitmap information.
*
* <p>By default, the method will try to decode an image from {@link MediaMetadata#artworkData} if
* it is present. Otherwise, the method will try to load an image from {@link
* MediaMetadata#artworkUri} if it is present. The method will return null if neither {@link
* MediaMetadata#artworkData} nor {@link MediaMetadata#artworkUri} is present.
*/
@Nullable
default ListenableFuture<Bitmap> loadBitmapFromMetadata(MediaMetadata metadata) {
@Nullable ListenableFuture<Bitmap> future;
if (metadata.artworkData != null) {
future = decodeBitmap(metadata.artworkData);
} else if (metadata.artworkUri != null) {
future = loadBitmap(metadata.artworkUri);
} else {
future = null;
}
return future;
}
}