[fandangos]

A few years back I've started this thread and we finally have it https://forum.kodi.tv/showthread.php?tid=316378.
Blu-ray and UHD Blu-Ray menus. 

Still we face the problem that Windows and Nvidia use a private API for HDR and this goes against the open source concept of Kodi. 

This is not a problem for Madashi and MadVR. The problem is that even adding the newest libbluray into DSPlayer it won't render the menus. 
Even adding DSplayer as a Kodi external player this won't work. What I'm looking for is an all in one solution and if we could have HDR this would be finally possible. 

So, the thing is, how hard since Kodi is open source, to implement DSPlayer seamless into Leia 18.2?

We could say just wait for Kodi 19 Matrix but since the API is closed we might never get HDR passtrought. 
And even using the Nvidia Shield that supports HDR passtrought it does not support Java, so full blu-ray and uhd blu-rays playback isn't possible. 

The only final option is Jriver Media Center which uses MadVR for libbluray still Kodi interface is way better compared to it and the integration of external addons make it a an awesome candidate for a all in one solution. 

So.. any idea how we could integrate DSPlayer into Leia or how we can integrate libbluray into krypton?

A merge of DSPlayer's GitHub (on page one) with the original Kodi GitHub might work. You'd have to manually move code around to deal with merge conflicts to determine if it will work. 

The hard part is understand what was changed to incorporate DSplayer. 
I kind of understand the dsplayer portion itself inside the players folder but it seems more likely it got integrated as an external internal player than part of kodi itself. 
It got all the integrations with estuary and this is a great help since it's the skin still being used with Kodi 19 Matrix. 

But just as an example, when playing a full blu-ray even with Dsplayer it will only use it if playing the main movie only, if you want to play the disc it will default for videoplayer.
That leads me to believe that it needs a huge portion of integration with Kodi system.

And tbh, this is way over my head.