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.heif;
  
  import com.drew.imaging.heif.HeifHandler;
  import com.drew.lang.SequentialByteArrayReader;
  import com.drew.lang.SequentialReader;
  import com.drew.lang.annotations.NotNull;
  import com.drew.metadata.Metadata;
  import com.drew.metadata.heif.boxes.*;
  
  import java.io.IOException;
  import java.util.Arrays;
  import java.util.List;
  
  /**
   * @author Payton Garland
   */
  public class HeifBoxHandler extends HeifHandler<HeifDirectory>
  {
      HandlerBox handlerBox;
  
      private HeifHandlerFactory handlerFactory = new HeifHandlerFactory(this);
  
      public HeifBoxHandler(Metadata metadata)
      {
          super(metadata);
      }
  
      @Override
      protected HeifDirectory getDirectory()
      {
          return new HeifDirectory();
      }
  
      @Override
      public boolean shouldAcceptBox(@NotNull Box box)
      {
          List<String> boxes = Arrays.asList(HeifBoxTypes.BOX_FILE_TYPE,
              HeifBoxTypes.BOX_HANDLER,
              HeifBoxTypes.BOX_HVC1);
  
          return boxes.contains(box.type);
      }
  
      @Override
      public boolean shouldAcceptContainer(@NotNull Box box)
      {
          return box.type.equals(HeifContainerTypes.BOX_METADATA)
              || box.type.equals(HeifContainerTypes.BOX_IMAGE_PROPERTY)
              || box.type.equals(HeifContainerTypes.BOX_ITEM_PROPERTY);
      }
  
      @Override
      public HeifHandler<?> processBox(@NotNull Box box, @NotNull byte[] payload) throws IOException
      {
          if (payload != null) {
              SequentialReader reader = new SequentialByteArrayReader(payload);
              if (box.type.equals(HeifBoxTypes.BOX_FILE_TYPE)) {
                  processFileType(reader, box);
              } else if (box.type.equals(HeifBoxTypes.BOX_HANDLER)) {
                  handlerBox = new HandlerBox(reader, box);
                  return handlerFactory.getHandler(handlerBox, metadata);
              }
          }
          return this;
      }
  
      @Override
      public void processContainer(@NotNull Box box, @NotNull SequentialReader reader) throws IOException
      {
          if (box.type.equals(HeifContainerTypes.BOX_METADATA)) {
              new FullBox(reader, box);
          }
      }
  
      private void processFileType(@NotNull SequentialReader reader, @NotNull Box box) throws IOException
      {
          FileTypeBox fileTypeBox = new FileTypeBox(reader, box);
          fileTypeBox.addMetadata(directory);
          if (!fileTypeBox.getCompatibleBrands().contains("mif1")) {
              directory.addError("File Type Box does not contain required brand, mif1");
          }
      }
  }
  