the type of the GstMeta API
the name of the GstMeta implementation
the size of the GstMeta structure
(scope async) a GstMetaInitFunction
(scope async) a GstMetaFreeFunction
(scope async) a GstMetaTransformFunction
a GstMetaInfo that can be used to access metadata. [transfer none]
Register a new GstMeta implementation. The same info can be retrieved later with gst_meta_get_info() by using impl as the key.