ArtFilm is the sample code for the blog post Getting To Grips With The Core Media IO Camera Extension, a 3 part series, part 3 of 3: bringing it all together by building a creative camera with realtime effects processing using vImage Pixel Buffers, which can use the Continuity Camera Webcam, from The Offcuts.
You can also check out the sample code for part 1, and the sample code for part 2. They are all iterations of the same CMIO Camera Extension, with an increasing featureset.