Unable to embed ICC profile in JPEG

The context is the following: I’m trying to achieve the following:

• read an image and its icc profile (not converting the image to the icc profile, just reading the two)
• write the image and its original icc profile (again, no conversion)

I first thought this would be a triviality but I’ve had no success so far. My current code is in this file, using this image which has an Adobe RGB (1998) color profile. The code can be summarized as follows:

    public static void readAndWriteTwelveMonkeys(ImageInputStream iis) {
        ImageReader r = ...; // the twelvemonkeys one
        r.setInput(iis);
        
        IIOMetadata meta = r.getImageMetadata(0);
        // if I print the image metadata, I see that the color profile is correct (AdobeRGB)
        
        ImageTypeSpecifier its = r.getRawImageType(0);
        ImageReadParam p = r.getDefaultReadParam();
        p.setDestinationType(its);
        
        // color space is RGB (not sRGB), not sure if it's relevant
        System.out.println("is ColorSpace RGB? "+(its.getColorModel().getColorSpace().getType() == ColorSpace.TYPE_RGB));
                
        BufferedImage bi = r.read(0, p);

        Iterator<ImageWriter> itw2 = ImageIO.getImageWriters(new ImageTypeSpecifier(bi), "jpeg");
        ImageWriter iw2 = itw2.next();
        if (iw2 == null) {
            System.out.println("no writer for the image type of the buffered image");
        } else {
            ImageWriteParam wp = iw2.getDefaultWriteParam();
            wp.setDestinationType(its);
            ImageOutputStream out = ImageIO.createImageOutputStream(new File("test-regularjpg.jpg"));
            iw2.setOutput(out);
            iw2.write(null, new IIOImage(bi, null, meta), wp);
        }
        is.close();
        iis.close();
    }

which works but the output doesn’t have the original icc profile embedded; even more strange it embeds an sRGB profile.

Is it generally possible to achieve what I want: with ImageIO in general (I’m starting to doubt it)? with TwelveMonkeys?

java -version says

openjdk version "11.0.5" 2019-10-15

Edit: I initially reported a silly configuration error, sorry

[eroux]

it looks fixed indeed, thanks a lot!

[haraldk]

Hi,

I think I might have “accidentally” fixed this is #573 (TwelveMonkeys 3.7.0), as we now always return non-null from getRawImageType. The raw type will use the color space created from the ICC profile (given that it is compatible with the image data), and the same type is available in getImageTypes as well.

If you find the time, please test the new functionality, and see if that works for you. If not, you may re-open the issue with your new findings. 😀

Closing for now.

Best regards,

– Harald K