Swing/ExtractFramesFromAnimatedGif のバックアップの現在との差分(No.8)

#spandel
ImageReader reader = null;
#spanend
#spandel
Iterator<ImageReader> readers = ImageIO.getImageReaders(imageStream);
#spanend
#spandel
while(readers.hasNext()) {
#spanend
  reader = readers.next();
#spanadd
private static List<BufferedImage> loadFromStream(ImageInputStream imageStream) throws IOException {
#spanend
  Iterable<ImageReader> it = () -> ImageIO.getImageReaders(imageStream);
  ImageReader reader = StreamSupport.stream(it.spliterator(), false)
      .filter(MainPanel::checkGifFormat)
      .findFirst()
      .orElseThrow(() -> new IOException("Can not read image format!"));
  reader.setInput(imageStream, false, false);
  List<BufferedImage> list = new ArrayList<>();
  for (int i = 0; i < reader.getNumImages(true); i++) {
    IIOImage frame = reader.readAll(i, null);
    list.add((BufferedImage) frame.getRenderedImage());
  }
  reader.dispose();
  return list;
#spanadd
}
#spanend
#spanadd

#spanend
#spanadd
private static boolean checkGifFormat(ImageReader reader) {
#spanend
  String metaFormat = reader.getOriginatingProvider().getNativeImageMetadataFormatName();
  if("gif".equalsIgnoreCase(reader.getFormatName()) &&
            !"javax_imageio_gif_image_1.0".equals(metaFormat)) {
    continue;
  }else{
    break;
  String name;
  try {
    name = reader.getFormatName();
  } catch (IOException ex) {
    name = "";
  }
  return "gif".equalsIgnoreCase(name) && "javax_imageio_gif_image_1.0".equals(metaFormat);
}
#spandel
if(reader == null) {
#spanend
  throw new IOException("Can not read image format!");
#spandel
}
#spanend
#spandel
boolean isGif = reader.getFormatName().equalsIgnoreCase("gif");
#spanend
#spandel
reader.setInput(imageStream, false, !isGif);
#spanend
#spandel
List<BufferedImage> list = new ArrayList<>();
#spanend
#spandel
for(int i=0;i<reader.getNumImages(true);i++) {
#spanend
  IIOImage frame = reader.readAll(i, null);
  list.add((BufferedImage)frame.getRenderedImage());
#spandel
}
#spanend
#spandel
reader.dispose();
#spanend