Register a new custom Gst.Meta implementation, backed by an opaque
structure holding a Gst.Structure.
The registered info can be retrieved later with gst_meta_get_info() by using
name as the key.
The backing Gst.Structure can be retrieved with
gst_custom_meta_get_structure(), its mutability is conditioned by the
writability of the buffer the meta is attached to.
When transform_func is null, the meta and its backing Gst.Structure
will always be copied when the transform operation is copy, other operations
are discarded, copy regions are ignored.
Register a new custom Gst.Meta implementation, backed by an opaque structure holding a Gst.Structure.
The registered info can be retrieved later with
gst_meta_get_info()by usingnameas the key.The backing Gst.Structure can be retrieved with
gst_custom_meta_get_structure(), its mutability is conditioned by the writability of the buffer the meta is attached to.When
transform_funcisnull, the meta and its backing Gst.Structure will always be copied when the transform operation is copy, other operations are discarded, copy regions are ignored.