14.9. 2D Compositor
This section describes some of the most important issues regarding the implementation of the 2D MPEG-4 compositor, a software implementation that had as a target the Complete 2D scene graph and graphics profiles (see Chapter 13). Because object composition is not normative in MPEG-4, this module is not included in the reference software as a normative part but as an informative one. Still, the code described here was useful to validate the specification, as only the technology that was implemented in the context of the reference software was included in the standard.
Being a 2D compositor, only a subset of the MPEG-4 BIFS nodes has been implemented (a list of the nodes implemented can be found in [MPEG4-5]). As a consequence, ...
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