WebP: Reading from InputStream with unknown length does not decode (produces black image)

Version information 3.8.2

** The exact output of java --version (or java -version for older Java releases). openjdk version “11.0.3” 2019-04-16 LTS OpenJDK Runtime Environment Corretto-11.0.3.7.1 (build 11.0.3+7-LTS) OpenJDK 64-Bit Server VM Corretto-11.0.3.7.1 (build 11.0.3+7-LTS, mixed mode)

Describe the bug

First of all, thank you for creating a very useful library.

My problem is:

https://github.com/haraldk/TwelveMonkeys/issues/672#issue-1204081521 Similar to the problem above. (only for webp )

In my case, I want to immediately save the image uploaded by the client. It’s not reading a file, it’s saving a byte[] or InputStream as an image file.

Because in my case I am using Spring framework,

From org.springframework.web.multipart.MultipartFile. For example

BufferedImage image = ImageIO.read(multipartFile.getInputStream());

However, the result is that a black image is extracted.

https://github.com/haraldk/TwelveMonkeys/issues/672#issue-1204081521 Seeing the above case, I temporarily solved it like this:

// Once uploaded, save the image as a file to disk. FileCopyUtils.copy(multipartFile.getBytes(), file);

// Read back the file saved to disk. for image processing BufferedImage image = ImageIO.read(file);

// Process the image and save it again.

This works fine, but it’s an unnecessary process. It will take more time.

BufferedImage image = ImageIO.read(multipartFile.getInputStream());

Is there any way to solve the above at once?

thank you!

[haraldk]

Hi,

I’m currently on summer holiday with my family, but I’ll try to make a new release when I’m back in the office.

In the mean time, please try one of the later snapshot-builds, to see if they fix the problem for you. 😀

– Harald K

[hprange]

Hey @haraldk! I’m having the same issue reported by gjrjf. I see you fixed it on Apr 22nd (https://github.com/haraldk/TwelveMonkeys/commit/9fe87fe10d692c5b9142e0c8f00f4118c07fc49e). However, the latest TwelveMonkeys release is from Feb 22nd. Are you planning to release a new version of TweveMonkeys any time soon? Can I help somehow? I’m very interested in this fix.