Here are the data structures with brief descriptions:

Cdaala_comment	The comment information
Cdaala_image	Representation of an image or video frame
Cdaala_image_plane	Representation of a single component within an image or frame
Cdaala_info	Configuration parameters for a codec instance
Cdaala_packet
Cdaala_plane_info	Subsampling factors for a plane as a power of 2
Cod_accounting
Cod_accounting_dict	Dictionary for translating strings into id
Cod_acct_symbol