Here are the data structures with brief descriptions:

daala_comment	The comment information
daala_image	Representation of an image or video frame
daala_image_plane	Representation of a single component within an image or frame
daala_info	Configuration parameters for a codec instance
daala_packet
daala_plane_info	Subsampling factors for a plane as a power of 2
od_accounting
od_accounting_dict	Dictionary for translating strings into id
od_acct_symbol