#1186 Better DNG compression

[Ruben Kelevra]

Samsung added Jpeg-XL compression for DNGs in their phones:

https://cloudinary.com/blog/samsung-now-supports-dng-1-7-including-jpeg-xl

And Apple is also using Jpeg-XL now:

https://appleinsider.com/articles/24/08/22/exclusive-every-iphone-16-iphone-16-pro-camera-spec-capture-button-detail-revealed

Those DNGs can be opened by Adobe products for a while, making them a viable option for many people.

Would be great if Open Camera would switch to JPEG-XL compression, too, for DNGs to save a lot of disk space.

Existing DNGs can be converted with the website (and the cli tool available on it):

https://tinydng.com/

While this employs the same compression methods, that's a bit different than the original Jpeg-XL ticket, which is about replacing jpg with Jpeg-XL for capturing standard images:

https://sourceforge.net/p/opencamera/tickets/1019/

[Ruben Kelevra]

The attachment:

[Ruben Kelevra]

I've checked: Google Photos has also landed support for Jpeg-XL compression in DNG, while still no support for Jpeg-XL images itself. Super weird.

Anyway, this means that Jpeg-XL compression for DNG will work for most people just out of the box under Android. :)