We're writing a .NET-based app to read images including RAW files. Is there a good library we can use? Perhaps a wrapper around dcraw or libraw? License-wise, LGPL is fine but GPL wouldn't be.
There isn't yet, but there might be soon, based on the information in the question I asked here, which is more aimed at extending the support to all GDI+ applications.
Pretty much all other options I've come across involve wrapping dcraw (there's example code for a plugin for Paint.Net)
EDIT: Probably should also mention the obvious (well it is now I've found out about it); Windows Imaging Components is supported by at least Canon have a downlaodable codec for it, which will give you support in a WPF application
EDIT2: It doesn't have to be a WPF application itself, just needs v3+ of the Framework to pull in the System.Windows.Media.Imaging namespace fro BitmapFrame/etc.
I asked a similar question some time ago.
The option I ended up using was running DCRaw and capturing the output into a GDI+ Bitmap object. It works well and it isn't too slow.
The ImageMagick library, which can read almost every image format, has a .NET wrapper which you could use.