Here is a list of all documented files with brief descriptions:

src
descriptors
dr.h	Gather all dr_*.h into one
dr_02.h	Application interface for the MPEG 2 "video stream" descriptor decoder and generator
dr_03.h	Application interface for the MPEG 2 "audio stream" descriptor decoder and generator
dr_04.h	Application interface for the MPEG 2 "hierarchy" descriptor decoder and generator
dr_05.h	Application interface for the MPEG 2 "registration" descriptor decoder and generator
dr_06.h	Application interface for the MPEG 2 "data stream alignment" descriptor decoder and generator
dr_07.h	Application interface for the MPEG 2 "target background grid" descriptor decoder and generator
dr_08.h	Application interface for the MPEG 2 "video window" descriptor decoder and generator
dr_09.h	Application interface for the MPEG 2 "conditional access" descriptor decoder and generator
dr_0a.h	Application interface for the MPEG 2 "ISO 639 language" descriptor decoder and generator
dr_0b.h	Application interface for the MPEG 2 "system clock" descriptor decoder and generator
dr_0c.h	Application interface for the MPEG 2 "multiplex buffer utilization" descriptor decoder and generator
dr_0d.h	Application interface for the MPEG 2 "copyright" descriptor decoder and generator
dr_0e.h	Application interface for the MPEG 2 "maximum bitrate" descriptor decoder and generator
dr_0f.h	Application interface for the MPEG 2 "private data indicator" descriptor decoder and generator
dr_10.h	Application interface for the MPEG-2 smoothing buffer descriptor decoder and generator
dr_11.h	Application interface for the MPEG-2 STD descriptor decoder and generator
dr_12.h	Application interface for the MPEG-2 IBP descriptor decoder and generator
dr_13.h	Decode Carousel id Descriptor
dr_14.h	Decode Association Tag Descriptor
dr_1b.h	Application interface for the MPEG-4 video descriptor decoder and generator
dr_1c.h	Application interface for the MPEG-4 audio descriptor decoder and generator
dr_40.h	Application interface for the DVB "network name" descriptor decoder and generator
dr_41.h	Application interface for the DVB "service list" descriptor decoder and generator
dr_42.h	Application interface for the DVB "stuffing" descriptor decoder and generator
dr_43.h	Application interface for the DVB satellite delivery system descriptor decoder and generator
dr_44.h	Application interface for the DVB cable delivery system descriptor decoder and generator
dr_45.h	VBI data descriptor parsing
dr_47.h	Application interface for the DVB "bouquet name" descriptor decoder and generator
dr_48.h	Application interface for the DVB "service" descriptor decoder and generator
dr_49.h	Application interface for the DVB "country availability" descriptor decoder and generator
dr_4a.h	Application interface for the DVB "country availability" descriptor decoder and generator
dr_4b.h	Application interface for the Near Video On Demand (NVOD) reference descriptor decoder and generator
dr_4c.h	Application interface for the time shifted service descriptor decoder and generator
dr_4d.h	Application interface for the "Short event" descriptor decoder and generator
dr_4e.h	Application interface for the "Extended event" descriptor decoder and generator
dr_4f.h	Application interface for the time shifted event descriptor decoder and generator
dr_50.h	Application interface for the time shifted event descriptor decoder and generator
dr_52.h	Application interface for the DVB "stream identifier" descriptor decoder and generator
dr_53.h	Application interface for the DVB "CA identifier" descriptor decoder and generator
dr_54.h	Content descriptor parsing
dr_55.h	Parental rating descriptor parsing
dr_56.h	EBU Teletext descriptor parsing
dr_58.h	Application interface for the DVB "local time offset" descriptor decoder and generator
dr_59.h	DVB subtitling descriptor parsing
dr_5a.h	Application interface for the DVB terrestrial delivery system descriptor decoder and generator
dr_62.h	Decode Frequency List Descriptor
dr_66.h	Decode Data Broadcast id Descriptor
dr_69.h	Application interface for the PDC (Programme Delivery Control) descriptor decoder and generator
dr_73.h	Decode Default Authority Descriptor
dr_76.h	Decode Content Identifier Descriptor
dr_7c.h	AAC Audio descriptor
dr_81.h	Decode AC-3 Audio Descriptor
dr_83.h	Decode Logical Channel Number Descriptor
dr_86.h	Decode Caption Service Descriptor
dr_8a.h	CUE Identifier descriptor parsing
dr_a0.h	Decode Extended Channel Name Descriptor
dr_a1.h	Decode Service Location Descriptor
tables
atsc_eit.h	Decode PSIP Event Information Table (ATSC EIT)
atsc_ett.h	Decode PSIP Extented Text Table (ATSC ETT)
atsc_mgt.h	Decode PSIP Master Guide Table (ATSC MGT)
atsc_stt.h	Decode PSIP System Time Table (ATSC STT)
atsc_vct.h	Decode PSIP Virtual Channel Table. (ATSC VCT)
bat.h	Application interface for the BAT decoder
cat.h	Application interface for the CAT decoder and the CAT generator
eit.h	Application interface for the EIT decoder and the EIT generator
nit.h	Application interface for the NIT decoder and the NIT generator
pat.h	Application interface for the PAT decoder and the PAT generator
pmt.h	Application interface for the PMT decoder and the PMT generator
rst.h	Application interface for the RST decoder and the RST generator
sdt.h	Application interface for the SDT decoder and the SDT generator
sis.h	Application interface for the SIS decoder and the SIS generator
tot.h	Application interface for the TDT/TOT decoder and the TDT/TOT generator
demux.h	Subtable demutiplexor
descriptor.h	Common descriptor tools
dvbpsi.h	Application interface for all DVB/PSI decoders
psi.h	Common PSI tools