The SDK I received is a few PDF documents and doesn't come with any kind of reference drivers or sample code. Using the drivers I found on this thread I've managed to create a C# library which implements all of the documented API for FM
radio (using the DirectShow.Net library for the DirectShow audio bits). I'm currently putting together a test application to demonstrate the use of this C# library and then hope to write a plugin to integrate it with something. If Realtek are happy with the idea then I'll stick it on CodePlex so that others can use the code.
The next stage is DAB/DAB+. MY DAB reception is pretty poor but once I get an aerial I should be able to write a library to do that too. DAB+ may be trickier since I can't get that but I'm hoping that it's just a slight change to the DirectShow filters.
As I said, I'd like to get something up on CodePlex (or other open source hosting) so that others can write plugins against a library and not have to worry about the implementation details. There are definitely some 'inconsistencies' between the documentation and drivers I have so it'd be nice to think that we all don't have to solve the same problems.
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