Multimedia Framework (MMF) data source and data sink plugins are
software abstractions for a source and sink of multimedia data. Data
source and data sink plugins are ECom plugins
that are intended to be used in conjunction with an MMF controller
plugin. Examples of MMF source plugins include: audio input plugins
for a microphone, a camera, an RTP stream, a file and a descriptor.
Examples of MMF sink plugins include: audio output for a speaker,
a display, an RTP stream, a file and a descriptor. The MMF provides
standard source plugins for an audio input, a file and a descriptor.
It is possible to develop source plugins for other sources of multimedia
data provided they conform to the MDataSource API.
The MMF also provides standard sink plugins for an audio output, a
file and a descriptor. It is possible to develop sink plugins for
other sinks of multimedia data provided they conform to the MDataSink API.
Sources and sinks are owned by the controller framework and are added to the controller, but not owned by the controller. See writing a controller plugin for more information.
To write a MMF Source/Sink Plugin, the following needs to be done:
Write the appropriate
source .cpp and .h files that make
up the implementation of the source/sink plugin. See Creating a Source
Plugin and Creating a Sink Plugin.
Write a resource file defining the formats available in the plugin DLL.
Write the appropriate build files.