ts::DCT Class Reference

Representation of an ISDB Download Control Table (DCT). More...

Inheritance diagram for ts::DCT:

Collaboration diagram for ts::DCT:

Classes
class	ModelInfo
	Identification of a receiver model and software. More...
class	StreamInfo
	Identification of all DLT in a transport stream. More...

Public Member Functions
	DCT (DuckContext &duck, const BinaryTable &table)
	Constructor from a binary table. More...
	DCT (uint8_t vers=0, bool cur=true)
	Default constructor. More...
virtual uint16_t	tableIdExtension () const override

Static Public Member Functions
static void	DisplaySection (ts::TablesDisplay &display, const ts::Section &section, ts::PSIBuffer &payload, const ts::UString &margin)
	A static method to display a section. More...

Public Attributes
uint16_t	network_id = 0
	Target network id.
std::list< StreamInfo >	streams {}
	Description of all transport streams.
uint8_t	transmission_rate = 0
	Transmission rate in TS packets per second.

Protected Member Functions
virtual bool	analyzeXML (DuckContext &, const xml::Element *) override
virtual void	buildXML (DuckContext &, xml::Element *) const override
virtual void	clearContent () override
virtual void	deserializePayload (PSIBuffer &, const Section &) override
virtual void	serializePayload (BinaryTable &, PSIBuffer &) const override

Detailed Description

Representation of an ISDB Download Control Table (DCT).

See also

ARIB STD-B16, 4.3

Note: the ARIB STD-B16 is only in available in Japanese version and not generally available for download. The following is a summary of the structure of the DCT for the purpose of its implementation.

The DCT indicates various information for separating and extracting DLT. PID is 0x0017. It is transmitted on all transport_streams of the network. The transmission frequency is at least once per second.

Syntax                           Bits  Identifier
-------------------------------  ----  -------------
Download_control_section() {
  table_id                          8  uimsbf = 0xC0
  section_syntax_indicator          1  bslbf  = 1
  private_indicator                 1  bslbf  = 1
  reserved                          2  bslbf
  section_length                   12  uimsbf
  network_id                       16  uimsbf
  reserved                          2  bslbf
  version_number                    5  uimsbf
  current_next_indicator            1  bslbf
  section_number                    8  uimsbf
  last_section_number               8  uimsbf
  transmission_rate                 8  uimsbf
  for (i=0;i<N;i++) {
    transport_stream_id            16  uimsbf
    reserved                        3  bslbf
    DL_PID                         13  uimsbf
    reserved                        3  bslbf
    ECM_PID                        13  uimsbf
    reserved                        4  bslbf
    model_info_length              12  uimsbf
    for (j=0;j<M;j++) {
      maker_id                      8  uimsbf
      model_id                      8  uimsbf
      version_id                    8  uimsbf
      DLT_size                      8  uimsbf
    }
  }
  CRC_32                           32  rpchof
}

network_id: This 16-bit field indicates the network to which the switch is to be made. If it is the same as the network that transmits the DLT, it means that it is used for the purpose of improving functions and fixing bugs.

transmission_rate: This 8-bit field indicates the transmission rate for each DLT sub-table (each device). It indicates the number of transport packets sent per second.

transport_stream_id: For each transport stream represented by this 16-bit field, this indicates an overview of the DLT transmitted there.

DL_PID: This 13-bit field indicates the PID of the DLT. A different PID is assigned for each destination network identification.

ECM_PID: This 13-bit field indicates the PID of the ECM corresponding to that DLT.

model_info_length: This 12-bit field specifies the total number of bytes in the model information loop that follows.

maker_id: This 8-bit field indicates the manufacturer identification of the receiver to which the DLT applies. This value is managed and operated by the standardization organization.

model_id: This 8-bit field indicates the model identification, within the same maker_id, of the receiver to which the DLT applies. This value is managed and operated by each manufacturer.

version_id (software version identification): This 8-bit field indicates the software version identification, within the same maker_id/model_id, of the receiver to which the DLT applies. This value is managed and operated by each manufacturer. Only one version_id is transmitted at the same time.

DLT_size (DLT size): This 8-bit field indicates the number of sections in the DLT with the same maker_id/model_id/version_id. It takes the same value as the middle 8 bits of last_Lsection_number in the DLT.

Constructor & Destructor Documentation

DCT() [1/2]

ts::DCT::DCT	(	uint8_t	vers = 0,
		bool	cur = true
	)

Default constructor.

Parameters

[in]	vers	Table version number.
[in]	cur	True if table is current, false if table is next.

DCT() [2/2]

ts::DCT::DCT	(	DuckContext &	duck,
		const BinaryTable &	table
	)

Constructor from a binary table.

Parameters

[in,out]	duck	TSDuck execution context.
[in]	table	Binary table to deserialize.

Member Function Documentation

DisplaySection()

static void ts::DCT::DisplaySection ( ts::TablesDisplay &  display, const ts::Section &  section, ts::PSIBuffer &  payload, const ts::UString &  margin  )

static

A static method to display a section.

Parameters

[in,out]	display	Display engine.
[in]	section	The section to display.
[in,out]	payload	A PSIBuffer over the payload.
[in]	margin	Left margin content.

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The documentation for this class was generated from the following file:

• tsDCT.h