Upipe is a flexible dataflow framework. It is primarily designed to be the core of a multimedia player, transcoder or streamer. The framework organizes the processing of incoming data buffer inside a pipeline of modules. It exposes core types for buffers and modules (called "pipes"), and the API of communication between pipes and between the application and pipes. The API documentation is written as a mkdoc file. Install mkdoc (http://www.nongnu.org/mkdoc/) and type ./configure && make doc The latest code is available from: http://upipe.org/ Upipe core libraries are distributed under the MIT license. The Upipe framers library (which contains code typically used by demuxes) is distributed under the LGPLv2.1+ license. The Upipe filters library is distributed under the LGPLv2.1+ license. The Upipe transport stream library is distributed under the LGPLv2.1+ license. For non-LGPL uses, please contact info@openheadend.tv.