content: /*
   * Copyright 2002-2019 Drew Noakes and contributors
   *
   *    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
   *
   *        https://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.
   *
   * More information about this project is available at:
   *
   *    https://drewnoakes.com/code/exif/
   *    https://github.com/drewnoakes/metadata-extractor
   */
  package com.drew.metadata.mov.atoms;
  
  import com.drew.lang.SequentialReader;
  import com.drew.lang.annotations.NotNull;
  
  import java.io.IOException;
  import java.util.ArrayList;
  
  /**
   * https://developer.apple.com/library/content/documentation/QuickTime/QTFF/QTFFChap2/qtff2.html#//apple_ref/doc/uid/TP40000939-CH204-25691
   *
   * @author Payton Garland
   */
  public abstract class SampleDescriptionAtom<T extends SampleDescription> extends FullAtom
  {
      protected long numberOfEntries;
      protected ArrayList<T> sampleDescriptions;
  
      public SampleDescriptionAtom(SequentialReader reader, Atom atom) throws IOException
      {
          super(reader, atom);
  
          numberOfEntries = reader.getUInt32();
  
          if (numberOfEntries <= Integer.MAX_VALUE) {
              sampleDescriptions = new ArrayList<T>((int)numberOfEntries);
              for (long i = 0; i < numberOfEntries; i++) {
                  sampleDescriptions.add(getSampleDescription(reader));
              }
          } else {
              // TODO surface an error here
              numberOfEntries = 0;
              sampleDescriptions = new ArrayList<T>();
          }
      }
  
      @NotNull
      abstract T getSampleDescription(SequentialReader reader) throws IOException;
  }
  