content: /*
   * Copyright (C) 2016 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 com.google.android.exoplayer2.metadata;
  
  import android.os.Parcel;
  import android.os.Parcelable;
  import java.util.Arrays;
  import java.util.List;
  
  /**
   * A collection of metadata entries.
   */
  public final class Metadata implements Parcelable {
  
    /**
     * A metadata entry.
     */
    public interface Entry extends Parcelable {}
  
    private final Entry[] entries;
  
    /**
     * @param entries The metadata entries.
     */
    public Metadata(Entry... entries) {
      this.entries = entries == null ? new Entry[0] : entries;
    }
  
    /**
     * @param entries The metadata entries.
     */
    public Metadata(List<? extends Entry> entries) {
      if (entries != null) {
        this.entries = new Entry[entries.size()];
        entries.toArray(this.entries);
      } else {
        this.entries = new Entry[0];
      }
    }
  
    /* package */ Metadata(Parcel in) {
      entries = new Metadata.Entry[in.readInt()];
      for (int i = 0; i < entries.length; i++) {
        entries[i] = in.readParcelable(Entry.class.getClassLoader());
      }
    }
  
    /**
     * Returns the number of metadata entries.
     */
    public int length() {
      return entries.length;
    }
  
    /**
     * Returns the entry at the specified index.
     *
     * @param index The index of the entry.
     * @return The entry at the specified index.
     */
    public Metadata.Entry get(int index) {
      return entries[index];
    }
  
    @Override
    public boolean equals(Object obj) {
      if (this == obj) {
        return true;
      }
      if (obj == null || getClass() != obj.getClass()) {
        return false;
      }
      Metadata other = (Metadata) obj;
      return Arrays.equals(entries, other.entries);
    }
  
    @Override
    public int hashCode() {
      return Arrays.hashCode(entries);
    }
  
    @Override
    public int describeContents() {
      return 0;
    }
  
    @Override
    public void writeToParcel(Parcel dest, int flags) {
      dest.writeInt(entries.length);
      for (Entry entry : entries) {
        dest.writeParcelable(entry, 0);
      }
    }
  
    public static final Parcelable.Creator<Metadata> CREATOR = new Parcelable.Creator<Metadata>() {
      @Override
      public Metadata createFromParcel(Parcel in) {
        return new Metadata(in);
      }
  
      @Override
      public Metadata[] newArray(int size) {
        return new Metadata[0];
      }
    };
  
  }
  