Carnivore source code is available under the GPL from https://github.com/RSG/Carnivore



In order to get the source to compile you will need to add the following to your build path:

1) lib/rsglib.jar

2) lib/processing_v1/core.jar



The ant file (build.xml) will create the library inside build/p5. 
It will also try to copy the new carnivore jar files over to your Processing
library folder (example /Users/alex/Documents/Processing/libraries/carnivore/library/carnivore.jar). 
So if everything builds okay, simply relaunch Processing and run the sketch.