atsctables.h File Reference

#include "libmythbase/mythconfig.h"
#include <cstdint>
#include <QString>
#include <QtEndian>
#include "libmythbase/mythdate.h"
#include "libmythbase/mythmiscutil.h"
#include "libmythtv/mpeg/atscdescriptors.h"
#include "libmythtv/mpeg/mpegtables.h"
#include "libmythtv/mythtvexp.h"

Include dependency graph for atsctables.h:

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Classes
class	TableClass
class	MasterGuideTable
	This table tells the decoder on which PIDs to find other tables, and their sizes and each table's current version number. More...
class	VirtualChannelTable
	This table contains information about the channels transmitted on this multiplex. More...
class	TerrestrialVirtualChannelTable
	This table contains information about the terrestrial channels transmitted on this multiplex. More...
class	CableVirtualChannelTable
	This table contains information about the cable channels transmitted on this multiplex. More...
class	EventInformationTable
	EventInformationTables contain program titles, start times, and channel information. More...
class	ExtendedTextTable
	ExtendedTextTable contain additional text not contained in EventInformationTables. More...
class	SystemTimeTable
	This table contains the GPS time at the time of transmission. More...
class	RatingRegionTable
	No one has had time to decode this table yet... More...
class	DirectedChannelChangeTable
	No one has had time to decode this table yet... More...
class	DirectedChannelChangeSelectionCodeTable
	No one has had time to decode this table yet... More...
class	AggregateEventInformationTable
	SCTE 65 & ATSC/81 0xD6. More...
class	AggregateExtendedTextTable
	SCTE 65 & ATSC/81 0xD7. More...

Detailed Description

Overall structure

base_PID ---> STT (Time),
              RRT (Censorship),
              MGT (Guide management),
              VCT (Channel Guide)
 
MGT ---> (PID_A,EIT[0],version_number),
         (PID_B,EIT[1],version_number),      etc,
         (PID_X,RTT,version_number),
         (PID_Y,RTT,version_number),         etc,
         (PID_1,Event ETT,version_number),
         (PID_2,Event ETT,version_number),   etc,
         (PID_m,Channel ETT,version_number),
         (PID_n,Channel ETT,version_number), etc.
  Each EIT[i] is valid for 3 hours,
  EIT[0] is always the current programming.
  Other tables are described by descriptors,
  such as Subtitle Descriptors.
 
VCT ---> (channel-A,source-id[0]),
         (channel-B,source-id[1]), etc.

New VCTs can be sent with a new version number to update the programming in an EIT, then when the data is complete a new MGT is sent with an updated version_number for that EIT, updating the data.

Definition in file atsctables.h.