Svp files themself are win32 dll so I would not expect much from non windows platforms. Maybe wine or similar could manage the code, or maybe not
If we are talking about a Kodi plugin for the windows platform in particular, then sure it might be possible. But I really have nfi what Kodi offers for plugins.
The code would need to be adapted to fit Kodi's plugin api.
Eg how to initialize, get audio and where to write the video buffer.
Tuniacs Svp plugin as it stands expects these main points
1)tuniac app to tell it to render each frame as required. It is not running by itself.
2)raw audio data to be copied(by tuniac) in to a supplied buffer. This audio is in 32bit float format, and due to tuniacs memory copy optimisations the buffer must be byte aligned.
3)to be offered a window handle to directly write to.
Many players that support visuals do all or some the above very differently. In fact sonique was fairly different to tuniac. The different ways for each player to implement visuals may require significant rewriting work with Svp plugin only being used as a working example of an Svp renderer.
At least tuniacs renderer example initializes visual functions in the correct order so you don't get acidspunk crash and other bugs like it did on sonique 2.
Emulating another applications api so you can load it's dll's can be complex but smart coders would likely consider the task easy enough since their is source code for it all.