[Declared in "../coresys/common/kdu_roi_processing.h"]
This object propagates ROI information from one tile-component resolution to its four respective subbands. The source object supplied to the create function provides ROI information for the intermediate LL subband at the input to the relevant DWT stage, while acquire_band provides kdu_roi_node interfaces to ROI information for the subbands derived from that DWT stage.
The object is actually only an interface to an internal object whose implementation is not in public view. Interfaces may be copied at will, without impacting this internal object. For this reason, there is no meaningful destructor, since we do not want the internal object to be destroyed when any of its interfaces goes out of scope. You must use the explicit destroy function to destroy the internal object.