ts::PMT::Stream Class Reference

Description of an elementary stream. More...

#include <tsPMT.h>

Inheritance diagram for ts::PMT::Stream:

Collaboration diagram for ts::PMT::Stream:

Public Member Functions
	Stream (const AbstractTable *table, uint8_t type=0)
	Constructor.
PIDClass	getClass (const DuckContext &duck) const
	Get the PID class of the elementary stream.
CodecType	getCodec (const DuckContext &duck) const
	Try to determine the codec which is used in the elementary stream.
bool	getComponentTag (uint8_t &tag) const
	Look for a component tag in a stream_identifier_descriptor.
bool	isAudio (const DuckContext &duck) const
	Check if the elementary stream carries audio.
bool	isSubtitles (const DuckContext &duck) const
	Check if the elementary stream carries subtitles.
bool	isVideo (const DuckContext &duck) const
	Check if the elementary stream carries video.
UString	language (DuckContext &duck) const
	Get the first language code in the elementary stream.
bool	matchLanguage (DuckContext &duck, const UString &language) const
	Check if the elementary stream matches a specified language code.

Public Attributes
DescriptorList	descs
	List of descriptors for this entry, publicly accessible.
size_t	order_hint
	Preferred insertion index when serializing the table or NPOS if unspecified.
uint8_t	stream_type = 0
	Stream type, one of ST_* (eg ts::ST_MPEG2_VIDEO).

Detailed Description

Description of an elementary stream.

Note: by inheriting from EntryWithDescriptors, there is a public field "DescriptorList descs".

Constructor & Destructor Documentation

Stream()

ts::PMT::Stream::Stream ( const AbstractTable *  table, uint8_t  type = 0  )

explicit

Constructor.

Parameters

[in]	table	Parent PMT.
[in]	type	Stream type.

Member Function Documentation

isAudio()

bool ts::PMT::Stream::isAudio

(

const DuckContext &

duck

)

const

Check if the elementary stream carries audio.

Does not just look at the stream type. Also analyzes the descriptor list for additional information.

Parameters

[in]

duck

TSDuck execution context.

Returns

True if the elementary stream carries audio.

isVideo()

bool ts::PMT::Stream::isVideo

(

const DuckContext &

duck

)

const

Check if the elementary stream carries video.

Does not just look at the stream type. Also analyzes the descriptor list for additional information.

Parameters

[in]

duck

TSDuck execution context.

Returns

True if the elementary stream carries video.

isSubtitles()

bool ts::PMT::Stream::isSubtitles

(

const DuckContext &

duck

)

const

Check if the elementary stream carries subtitles.

Does not just look at the stream type. Also analyzes the descriptor list for additional information.

Parameters

[in]

duck

TSDuck execution context.

Returns

True if the elementary stream carries subtitles.

language()

UString ts::PMT::Stream::language

(

DuckContext &

duck

)

const

Get the first language code in the elementary stream.

Parameters

[in,out]

duck

TSDuck execution context.

Returns

The language code from the first language descriptor or an empty string if none is found.

matchLanguage()

bool ts::PMT::Stream::matchLanguage ( DuckContext &  duck, const UString &  language  ) const

inline

Check if the elementary stream matches a specified language code.

Parameters

[in,out]	duck	TSDuck execution context.
[in]	language	Language code to search (case insensitive, spaces are ignored).

Returns

True if the elementary stream contains a language descriptor with the specified language code.

getClass()

PIDClass ts::PMT::Stream::getClass

(

const DuckContext &

duck

)

const

Get the PID class of the elementary stream.

Look at the stream type and the descriptor list.

Parameters

[in]

duck

TSDuck execution context.

Returns

The PID class (PIDClass::DATA if unknown component type).

getCodec()

CodecType ts::PMT::Stream::getCodec

(

const DuckContext &

duck

)

const

Try to determine the codec which is used in the elementary stream.

Look at the stream type and the descriptor list.

Parameters

[in]

duck

TSDuck execution context.

Returns

The codec type (CodecType::UNDEFINED if unknown).

getComponentTag()

bool ts::PMT::Stream::getComponentTag

(

uint8_t &

tag

)

const

Look for a component tag in a stream_identifier_descriptor.

Parameters

[out]

tag

First component tag found, unmodified if none found.

Returns

True if a component tag was found.

Member Data Documentation

order_hint

size_t ts::AbstractTable::AttachedEntry::order_hint

inherited

Preferred insertion index when serializing the table or NPOS if unspecified.

This is an informational hint which can be used or ignored.

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

• tsPMT.h