Represents the global properties of the stream, that are accessible to datasets within.
creates a new PacketDescriptor
creates a new PacketDescriptor
return the ID associated with this packet type, or -99 if no id has been assigned.
Returns a List of SkeletonDescriptor instances that represent the y planes in a packet. The List is unmodifiable and will throw an exception if any attempt is made to alter the list. The contents of the list will not be updated if a yDescriptor is added to this packet descriptor.