pdn-jpeg-2000's Introduction

pdn-jpeg-2000

A Paint.NET filetype plugin that loads and saves JPEG 2000 images.

Installing the plugin

Close Paint.NET.
Place Jpeg2000Filetype.dll, Jpeg2000IO_x86.dll and Jpeg2000IO_x64.dll in the Paint.NET FileTypes folder which is usually located in one the following locations depending on the Paint.NET version you have installed.

Paint.NET Version	FileTypes Folder Location
Classic	C:\Program Files\Paint.NET\FileTypes
Microsoft Store	Documents\paint.net App Files\FileTypes

Restart Paint.NET.

License

This project is licensed under the terms of the MIT License.
See License.txt for more information.

3rd Party Code

This project utilizes the following code (located under 3rd-party folder)

JasPer

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pdn-jpeg-2000's Issues

resolution superbox has incorrect length

The JP2 files this plug-in is generating seem to be corrupt in a way that prevents some tools (like OpenJPEG) from being able to read them. Specifically, opj_dump myfile.jp2 reports:

[ERROR] Cannot handle box of less than 8 bytes
[ERROR] Stream error while reading JP2 Header box
ERROR -> opj_dump: failed to read the header

Looking at the saved JP2 files in a hex editor, it looks to me like the 'res ' super-box is getting written to disk with a reported length of 0x00000014 when it should be 0x0000001a. Is that from upstream, or does this include a customized copy of JasPer?

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