Support opening JPEG 2000 files

[naoliv]

Is it possible to also support opening JPEG 2000 files, exactly like we already can open GeoTIFFs?
For example, Sentinel-2 images from ​https://earthexplorer.usgs.gov/ are distributed as JPEG 2000 files (.jp2)

JOSM:

Relative:URL: ^/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2018-01-08 02:45:59 +0100 (Mon, 08 Jan 2018)
Revision:13300
Build-Date:2018-01-08 01:49:06
URL:http://josm.openstreetmap.de/svn/trunk

Identification: JOSM/1.5 (13300 pt_BR) Linux Debian GNU/Linux testing (buster)
Memory Usage: 796 MB / 7168 MB (375 MB allocated, but free)
Java version: 9.0.1+11-Debian-1, Oracle Corporation, OpenJDK 64-Bit Server VM
Screen: :0.0 1600x900, :0.1 1280x1024
Maximum Screen Size: 1600x1024
Java package: openjdk-9-jre:amd64-9.0.1+11-1
Java ATK Wrapper package: libatk-wrapper-java:all-0.33.3-13
VM arguments: [--add-modules=java.activation,java.se.ee, -Dawt.useSystemAAFontSettings=on]

[Don-vip]

Supporting JPEG 2000 is not an easy task:

1. It is not supported ​natively by the JDK (only BMP, GIF, JPEG, PNG, TIFF and WBMP are)
2. Oracle ​does not plan to add support for JPEG 2000
3. Sun created a plugin to decode it in JAI long time ago, but JAI is no longer supported by Oracle
4. Almost all libraries decoding this format are ​written in C/C++ so this requires wrappers to use them.
5. The only Java library I found (BOI) uses a ​weird licence

See #14921 for Sentinel-2 support, but this would need we get images in a more conventional format.

[Don-vip]

​https://m.xkcd.com/2254/