Here are the data structures with brief descriptions:

Cdvb_desc	Linked list containing the several descriptors found on a MPEG-TS table
Cdvb_descriptor	Contains the parser information for the MPEG-TS parser code
Cdvb_elementary_pid	Associates an elementary stream type with its PID
Cdvb_entry	Represents one entry on a DTV file
Cdvb_file	Describes an entire DVB file opened
Cdvb_parse_file	Describes an entire file format
Cdvb_parse_struct	Describes the format to parse an specific delivery system
Cdvb_parse_table	Describes the fields to parse on a file
Cdvb_sat_lnb	Stores the information of a LNBf
Cdvb_table_filter	Describes the PES filters used by DVB scan
Cdvb_v5_descriptors	Contains the descriptors needed to scan the Service ID and other relevant info at a MPEG-TS Digital TV stream
Cdvb_v5_descriptors_program	Associates PMT with PAT tables
Cdvb_v5_fe_parms	Keeps data needed to handle the DVB frontend
Cdvbsat_freqrange	Defines a frequency range used by Satellite