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.source.dash.manifest;
  
  import java.util.Collections;
  import java.util.List;
  
  /**
   * Represents a set of interchangeable encoded versions of a media content component.
   */
  public class AdaptationSet {
  
    /**
     * Value of {@link #id} indicating no value is set.=
     */
    public static final int ID_UNSET = -1;
  
    /**
     * A non-negative identifier for the adaptation set that's unique in the scope of its containing
     * period, or {@link #ID_UNSET} if not specified.
     */
    public final int id;
  
    /**
     * The type of the adaptation set. One of the {@link com.google.android.exoplayer2.C}
     * {@code TRACK_TYPE_*} constants.
     */
    public final int type;
  
    /**
     * {@link Representation}s in the adaptation set.
     */
    public final List<Representation> representations;
  
    /**
     * Accessibility descriptors in the adaptation set.
     */
    public final List<Descriptor> accessibilityDescriptors;
  
    /**
     * Supplemental properties in the adaptation set.
     */
    public final List<Descriptor> supplementalProperties;
  
    /**
     * @param id A non-negative identifier for the adaptation set that's unique in the scope of its
     *     containing period, or {@link #ID_UNSET} if not specified.
     * @param type The type of the adaptation set. One of the {@link com.google.android.exoplayer2.C}
     *     {@code TRACK_TYPE_*} constants.
     * @param representations {@link Representation}s in the adaptation set.
     * @param accessibilityDescriptors Accessibility descriptors in the adaptation set.
     * @param supplementalProperties Supplemental properties in the adaptation set.
     */
    public AdaptationSet(int id, int type, List<Representation> representations,
        List<Descriptor> accessibilityDescriptors, List<Descriptor> supplementalProperties) {
      this.id = id;
      this.type = type;
      this.representations = Collections.unmodifiableList(representations);
      this.accessibilityDescriptors = accessibilityDescriptors == null
          ? Collections.<Descriptor>emptyList()
          : Collections.unmodifiableList(accessibilityDescriptors);
      this.supplementalProperties = supplementalProperties == null
          ? Collections.<Descriptor>emptyList()
          : Collections.unmodifiableList(supplementalProperties);
    }
  
  }
  