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OGDI is the Open Geographic Datastore Interface. OGDI is an application programming interface (API) that uses a standardized access methods to work in conjunction with GIS software packages (the application) and various geospatial data products. OGDI uses a client/server architecture to facilitate the dissemination of geospatial data products over any TCP/IP network, and a driver-oriented approach to facilitate access to several geospatial data products/formats.
Open Phone Abstraction Library, implementation of the ITU H.323 teleconferencing protocol, and successor of the openh323 library.
OpenAL Soft is a cross-platform software implementation of the OpenAL 3D audio API. It's built off of the open-sourced Windows version available originally from the SVN repository at openal.org. OpenAL provides capabilities for playing audio in a virtual 3d environment. Distance attenuation, doppler shift, and directional sound emitters are among the features handled by the API. More advanced effects, including air absorption, low-pass filters, and reverb, are available through the EFX extension. It also facilitates streaming audio, multi-channel buffers, and audio capture.
Library of OpenCORE Framework implementation of Adaptive Multi Rate Narrowband and Wideband speech codec.
OpenCT implements drivers for several smart card readers. It comes as driver in ifdhandler format for PC/SC-Lite, as CT-API driver, or as a small and lean middleware, so applications can use it with minimal overhead. OpenCT also has a primitive mechanism to export smart card readers to remote machines via TCP/IP.