TIFFReader damages TIFF file when the BufferedImage content is accessed.

[llech]

Actual behaviour:

I've created a simple test for reading the content of the TIFF:

    TIFFReader reader = new TIFFReader();
    FileInputStream input = new FileInputStream(file);

    reader.read(input);
    input.close();
    int i = 1;
    for (BufferedImage bi : reader.getFrames()) {
      final int imageWidth = bi.getWidth();
      final int imageHeight = bi.getHeight();
      System.out.println("Next TIFF page found, width: "+imageWidth+", height: "+imageHeight);
      File target = new File("target/tiff-frame"+i+".jpg");
      BufferedImage copyImage = new BufferedImage(imageWidth, imageHeight, BufferedImage.TYPE_INT_RGB);
      Graphics2D g2d= copyImage.createGraphics();
      g2d.drawImage(bi, 0, 0, null);
      g2d.dispose();
      ImageIO.write(copyImage, "jpeg", file);
      i++;
    }

This code invokes no operations modifying the content of original file, however after invoking it, the content of the original file was destroyed. All frames were replaced with black background.

Expected behaviour:

The TIFFReader reads the file content, and not modifies it in any way, especially the destructive one.

[dragon66]

@llech I believe the issue you found is because you write to the same image file from which you read the image.

Note: TIFFReader is not functioning completely and if it failed to read some image, the result is a all-black blob but this is not the cause of the corruption for the original image.

Wen