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.imaging.quicktime;
  
  import com.drew.lang.annotations.NotNull;
  import com.drew.lang.annotations.Nullable;
  import com.drew.metadata.Metadata;
  import com.drew.metadata.mov.QuickTimeContext;
  import com.drew.metadata.mov.QuickTimeDirectory;
  import com.drew.metadata.mov.atoms.Atom;
  
  import java.io.IOException;
  
  /**
   * @author Payton Garland
   */
  public abstract class QuickTimeHandler<T extends QuickTimeDirectory>
  {
      @NotNull protected Metadata metadata;
      @NotNull protected T directory;
  
      public QuickTimeHandler(@NotNull Metadata metadata)
      {
          this.metadata = metadata;
          this.directory = createDirectory();
          metadata.addDirectory(directory);
      }
  
      @NotNull
      protected abstract T createDirectory();
  
      protected abstract boolean shouldAcceptAtom(@NotNull Atom atom);
  
      protected abstract boolean shouldAcceptContainer(@NotNull Atom atom);
  
      protected abstract QuickTimeHandler<?> processAtom(@NotNull Atom atom, @Nullable byte[] payload, QuickTimeContext context) throws IOException;
  
      protected QuickTimeHandler<?> processContainer(@NotNull Atom atom, QuickTimeContext context) throws IOException
      {
          return processAtom(atom, null, context);
      }
  
      public void addError(@NotNull String message)
      {
          directory.addError(message);
      }
  }
  