Chunks are tagged blocks of auxilary data that are transmitted along with each image frame. The GetChunkSize and GetChunkPointer methods provides the most efficient way to quickly access the chunk data in pointer-aware programming languages. It is especially useful for accessing data associated with array-type features.
Note that when several chunk features share the same Chunk ID, this method will return the size of the data block identified by the given Chunk ID. For more information on the chunk data refer to "GigE Vision Video Streaming and Device Control Over Ethernet Standard" published by the Automated Imaging Association.