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;
  
  import com.drew.imaging.quicktime.QuickTimeHandler;
  import com.drew.lang.SequentialByteArrayReader;
  import com.drew.lang.SequentialReader;
  import com.drew.lang.annotations.NotNull;
  import com.drew.lang.annotations.Nullable;
  import com.drew.metadata.Metadata;
  import com.drew.metadata.mov.atoms.*;
  import com.drew.metadata.mov.atoms.canon.CanonThumbnailAtom;
  import com.drew.metadata.xmp.XmpReader;
  
  import java.io.IOException;
  
  /**
   * @author Payton Garland
   */
  public class QuickTimeAtomHandler extends QuickTimeHandler<QuickTimeDirectory>
  {
      private QuickTimeHandlerFactory handlerFactory = new QuickTimeHandlerFactory(this);
  
      public QuickTimeAtomHandler(Metadata metadata)
      {
          super(metadata);
      }
  
      @NotNull
      @Override
      protected QuickTimeDirectory createDirectory()
      {
          return new QuickTimeDirectory();
      }
  
      @Override
      public boolean shouldAcceptAtom(@NotNull Atom atom)
      {
          return atom.type.equals(QuickTimeAtomTypes.ATOM_FILE_TYPE)
              || atom.type.equals(QuickTimeAtomTypes.ATOM_MOVIE_HEADER)
              || atom.type.equals(QuickTimeAtomTypes.ATOM_HANDLER)
              || atom.type.equals(QuickTimeAtomTypes.ATOM_MEDIA_HEADER)
              || atom.type.equals(QuickTimeAtomTypes.ATOM_CANON_THUMBNAIL)
              || atom.type.equals(QuickTimeAtomTypes.ATOM_ADOBE_XMP)
              || atom.type.equals(QuickTimeAtomTypes.ATOM_TRACK_HEADER);
      }
  
      @Override
      public boolean shouldAcceptContainer(@NotNull Atom atom)
      {
          return atom.type.equals(QuickTimeContainerTypes.ATOM_TRACK)
              || atom.type.equals(QuickTimeContainerTypes.ATOM_USER_DATA)
              || atom.type.equals(QuickTimeContainerTypes.ATOM_METADATA)
              || atom.type.equals(QuickTimeContainerTypes.ATOM_MOVIE)
              || atom.type.equals(QuickTimeContainerTypes.ATOM_MEDIA);
      }
  
      @Override
      public QuickTimeHandler<?> processAtom(@NotNull Atom atom, @Nullable byte[] payload, QuickTimeContext context) throws IOException
      {
          if (payload != null) {
              SequentialReader reader = new SequentialByteArrayReader(payload);
  
              if (atom.type.equals(QuickTimeAtomTypes.ATOM_MOVIE_HEADER)) {
                  MovieHeaderAtom movieHeaderAtom = new MovieHeaderAtom(reader, atom);
                  movieHeaderAtom.addMetadata(directory);
              } else if (atom.type.equals(QuickTimeAtomTypes.ATOM_FILE_TYPE)) {
                  FileTypeCompatibilityAtom fileTypeCompatibilityAtom = new FileTypeCompatibilityAtom(reader, atom);
                  fileTypeCompatibilityAtom.addMetadata(directory);
              } else if (atom.type.equals(QuickTimeAtomTypes.ATOM_HANDLER)) {
                  HandlerReferenceAtom handlerReferenceAtom = new HandlerReferenceAtom(reader, atom);
                  return handlerFactory.getHandler(handlerReferenceAtom.getComponentType(), metadata, context);
              } else if (atom.type.equals(QuickTimeAtomTypes.ATOM_MEDIA_HEADER)) {
                  new MediaHeaderAtom(reader, atom, context);
              } else if (atom.type.equals(QuickTimeAtomTypes.ATOM_CANON_THUMBNAIL)) {
                  CanonThumbnailAtom canonThumbnailAtom = new CanonThumbnailAtom(reader);
                  canonThumbnailAtom.addMetadata(directory);
              } else if (atom.type.equals(QuickTimeAtomTypes.ATOM_ADOBE_XMP)) {
                  new XmpReader().extract(payload, metadata, directory);
              } else if (atom.type.equals(QuickTimeAtomTypes.ATOM_TRACK_HEADER)) {
                  TrackHeaderAtom trackHeaderAtom = new TrackHeaderAtom(reader, atom);
                  trackHeaderAtom.addMetadata(directory);
              }
          } else {
              if (atom.type.equals(QuickTimeContainerTypes.ATOM_COMPRESSED_MOVIE)) {
                  directory.addError("Compressed QuickTime movies not supported");
              }
          }
  
          return this;
      }
  }
  