| /* |
| * Copyright 2019 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.media2.common; |
| |
| import android.annotation.SuppressLint; |
| |
| import androidx.annotation.NonNull; |
| import androidx.annotation.Nullable; |
| import androidx.annotation.RestrictTo; |
| import androidx.versionedparcelable.ParcelImpl; |
| import androidx.versionedparcelable.ParcelUtils; |
| import androidx.versionedparcelable.VersionedParcelable; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * @hide |
| */ |
| @RestrictTo(RestrictTo.Scope.LIBRARY_GROUP) |
| public class MediaParcelUtils { |
| public static final String TAG = "MediaParcelUtils"; |
| |
| /** |
| * Media2 version of {@link ParcelUtils#toParcelable(VersionedParcelable)}. |
| * <p> |
| * This sanitizes {@link MediaItem}'s subclass information. |
| * |
| * @param item |
| * @return |
| */ |
| @NonNull |
| public static ParcelImpl toParcelable(@Nullable VersionedParcelable item) { |
| if (item instanceof MediaItem) { |
| return new MediaItemParcelImpl((MediaItem) item); |
| } |
| return (ParcelImpl) ParcelUtils.toParcelable(item); |
| } |
| |
| /** |
| * Helper method for converting a list of VersionedParcelable items into ParcelImpl items. |
| * |
| * @param items |
| * @return |
| */ |
| @NonNull |
| public static List<ParcelImpl> toParcelableList( |
| @NonNull List<? extends VersionedParcelable> items) { |
| List<ParcelImpl> list = new ArrayList<>(); |
| for (int i = 0; i < items.size(); i++) { |
| list.add(toParcelable(items.get(i))); |
| } |
| return list; |
| } |
| |
| /** |
| * Media2 version of {@link ParcelUtils#fromParcelable(Parcelable)}. |
| */ |
| @SuppressWarnings("TypeParameterUnusedInFormals") |
| @Nullable |
| public static <T extends VersionedParcelable> T fromParcelable(@NonNull ParcelImpl p) { |
| return ParcelUtils.fromParcelable(p); |
| } |
| |
| /** |
| * Helper method for converting a list of ParcelImpl items into VersionedParcelable items |
| * |
| * @param parcelList |
| * @return |
| */ |
| @SuppressWarnings({"TypeParameterUnusedInFormals", "unchecked"}) |
| @NonNull |
| public static <T extends VersionedParcelable> List<T> fromParcelableList( |
| @NonNull List<ParcelImpl> parcelList) { |
| List<T> list = new ArrayList<>(); |
| for (int i = 0; i < parcelList.size(); i++) { |
| list.add((T) fromParcelable(parcelList.get(i))); |
| } |
| return list; |
| } |
| |
| @SuppressLint("RestrictedApi") |
| private static class MediaItemParcelImpl extends ParcelImpl { |
| private final MediaItem mItem; |
| MediaItemParcelImpl(MediaItem item) { |
| // Up-cast (possibly MediaItem's subclass object) item to MediaItem for the |
| // writeToParcel(). The copied media item will be only used when it's sent across the |
| // process. |
| super(new MediaItem(item)); |
| |
| // Keeps the original copy for local binder to send the original item. |
| // When local binder is used (i.e. binder call happens in a single process), |
| // writeToParcel() wouldn't happen for the Parcelable object and the same object will |
| // be sent through the binder call. |
| mItem = item; |
| } |
| |
| @Override |
| @SuppressWarnings("unchecked") |
| public MediaItem getVersionedParcel() { |
| return mItem; |
| } |
| } |
| } |