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.riff;
  
  import com.drew.imaging.FileType;
  import com.drew.imaging.TypeChecker;
  
  public class RiffTypeChecker implements TypeChecker
  {
      @Override
      public int getByteCount()
      {
          return 12;
      }
  
      @Override
      public FileType checkType(byte[] bytes)
      {
          String firstFour = new String(bytes, 0, 4);
          if (!firstFour.equals("RIFF"))
              return FileType.Unknown;
  
          String fourCC = new String(bytes, 8, 4);
          if (fourCC.equals("WAVE"))
              return FileType.Wav;
          if (fourCC.equals("AVI "))
              return FileType.Avi;
          if (fourCC.equals("WEBP"))
              return FileType.WebP;
  
          return FileType.Riff;
      }
  }
  