content: /*
   * Copyright (C) 2017 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.source.dash.manifest;
  
  import android.os.Parcel;
  import android.os.Parcelable;
  import android.support.annotation.NonNull;
  
  /**
   * Uniquely identifies a {@link Representation} in a {@link DashManifest}.
   */
  public final class RepresentationKey implements Parcelable, Comparable<RepresentationKey> {
  
    public final int periodIndex;
    public final int adaptationSetIndex;
    public final int representationIndex;
  
    public RepresentationKey(int periodIndex, int adaptationSetIndex, int representationIndex) {
      this.periodIndex = periodIndex;
      this.adaptationSetIndex = adaptationSetIndex;
      this.representationIndex = representationIndex;
    }
  
    @Override
    public String toString() {
      return periodIndex + "." + adaptationSetIndex + "." + representationIndex;
    }
  
    // Parcelable implementation.
  
    @Override
    public int describeContents() {
      return 0;
    }
  
    @Override
    public void writeToParcel(Parcel dest, int flags) {
      dest.writeInt(periodIndex);
      dest.writeInt(adaptationSetIndex);
      dest.writeInt(representationIndex);
    }
  
    public static final Creator<RepresentationKey> CREATOR =
        new Creator<RepresentationKey>() {
          @Override
          public RepresentationKey createFromParcel(Parcel in) {
            return new RepresentationKey(in.readInt(), in.readInt(), in.readInt());
          }
  
          @Override
          public RepresentationKey[] newArray(int size) {
            return new RepresentationKey[size];
          }
        };
  
    // Comparable implementation.
  
    @Override
    public int compareTo(@NonNull RepresentationKey o) {
      int result = periodIndex - o.periodIndex;
      if (result == 0) {
        result = adaptationSetIndex - o.adaptationSetIndex;
        if (result == 0) {
          result = representationIndex - o.representationIndex;
        }
      }
      return result;
    }
  
    @Override
    public boolean equals(Object o) {
      if (this == o) {
        return true;
      }
      if (o == null || getClass() != o.getClass()) {
        return false;
      }
  
      RepresentationKey that = (RepresentationKey) o;
      return periodIndex == that.periodIndex
          && adaptationSetIndex == that.adaptationSetIndex
          && representationIndex == that.representationIndex;
    }
  
    @Override
    public int hashCode() {
      int result = periodIndex;
      result = 31 * result + adaptationSetIndex;
      result = 31 * result + representationIndex;
      return result;
    }
  
  }
  