This directory holds a Java implementation of the webrtc::PeerConnection API, as well as the JNI glue C++ code that lets the Java implementation reuse the C++ implementation of the same API. To build the Java API and related tests, generate GN projects with: --args='target_os="android"' To use the Java API, start by looking at the public interface of org.webrtc.PeerConnection{,Factory} and the org.webrtc.PeerConnectionTest. To understand the implementation of the API, see the native code in jni/.