Version 2.5 of the Vamp plugin SDK is now available.
http://www.vamp-plugins.org/Vamp is a plugin API for audio analysis and feature extraction plugins written in C or C++. Its SDK features an easy-to-use set of C++ classes for plugin and host developers, a reference host implementation, example plugins, and documentation. It is supported across Linux, OS/X, and Windows.
A documentation guide to writing plugins using the Vamp SDK can be found at
http://www.vamp-plugins.org/guide.pdf.
Version 2.5 is a bugfix release. For more details, see the changelog at
http://code.soundsoftware.ac.uk/projects/vamp-plugin-sdk/repository/entry/CHANGELOGThe most significant fix in this release is in the host SDK, and affects the handling of output timestamps in the (little used) FixedSampleRate output type.
Chris