Video attributes for MPEG-1 and MPEG-2. More...

#include <tsMPEG2VideoAttributes.h>

Inheritance diagram for ts::MPEG2VideoAttributes:

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Collaboration diagram for ts::MPEG2VideoAttributes:

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Public Member Functions
	MPEG2VideoAttributes ()=default
	Default constructor.

uint8_t	aspectRatioCode () const
	Get display aspect ratio.

UString	aspectRatioName () const
	Get display aspect ratio name.

uint8_t	chromaFormat () const
	Get chroma format.

UString	chromaFormatName () const
	Get chroma format name.

size_t	frameRate () const
	Get frame rate: approximate value per second.

size_t	frameRate100 () const
	Get frame rate per 100 seconds.

size_t	frameRateDivider () const
	Get frame rate divider.

UString	frameRateName () const
	Get frame rate name.

size_t	frameRateNumerator () const
	Get frame rate numerator.

size_t	horizontalSize () const
	Get video horizontal size in pixels.

bool	interlaced () const
	Check if refresh mode is interlaced.

void	invalidate ()
	Invalidate the content of this instance.

bool	isValid () const
	Check if the values in the object are valid.

uint32_t	maximumBitRate () const
	Maximum bitrate.

virtual bool	moreBinaryData (const uint8_t *, size_t) override
	Provides an audio/video binary data to be analyzed by this instance.

bool	progressive () const
	Check if refresh mode is progressive.

UString	refreshModeName () const
	Get the refresh mode name.

virtual UString	toString () const override
	Convert to a string object.

size_t	vbvSize () const
	Video Buffering Verifier size in bits.

size_t	verticalSize () const
	Get video vertical size in pixels.

Protected Attributes
bool	_is_valid = false
	A flag which indicates if the content of this object is valid.

Detailed Description

Video attributes for MPEG-1 and MPEG-2.

A VideoAttributes object is built by transmitting video units (starting with a 00 00 01 xx start code). The state of the object may change after adding a "sequence header" unit and its following unit. When the later is a "sequence extension" unit, this is MPEG-2 video. Initially, a VideoAttributes is invalid.

Member Function Documentation

◆ moreBinaryData()

virtual bool ts::MPEG2VideoAttributes::moreBinaryData	(	const uint8_t *	addr,
		size_t	size
	)

overridevirtual

Provides an audio/video binary data to be analyzed by this instance.

The type of data (complete PES payload or some type of "frame" or "access unit") depends on the type of audio/video.

Parameters

[in]	addr	Address of data to be analyzed.
[in]	size	Size of data to be analyzed.

Returns: True if the attributes object becomes valid or has new values.

Implements ts::AbstractAudioVideoAttributes.

◆ toString()

virtual UString ts::MPEG2VideoAttributes::toString ( ) const

overridevirtual

Convert to a string object.

Returns: This object, converted as a string.

Implements ts::StringifyInterface.

◆ horizontalSize()

size_t ts::MPEG2VideoAttributes::horizontalSize ( ) const

inline

Get video horizontal size in pixels.

Returns: Video horizontal size in pixels.

◆ verticalSize()

size_t ts::MPEG2VideoAttributes::verticalSize ( ) const

inline

Get video vertical size in pixels.

Returns: Video vertical size in pixels.

◆ aspectRatioCode()

uint8_t ts::MPEG2VideoAttributes::aspectRatioCode ( ) const

inline

Get display aspect ratio.

Returns: Display aspect ratio, code values are AR_* from tsMPEG.h.

◆ aspectRatioName()

UString ts::MPEG2VideoAttributes::aspectRatioName ( ) const

Get display aspect ratio name.

Returns: Display aspect ratio as a string.

◆ progressive()

bool ts::MPEG2VideoAttributes::progressive ( ) const

inline

Check if refresh mode is progressive.

Returns: True if refresh mode is progressive. Note that progressive() and interlaced() can return false both if the refresh mode is unspecifed.

◆ interlaced()

bool ts::MPEG2VideoAttributes::interlaced ( ) const

inline

Check if refresh mode is interlaced.

Returns: True if refresh mode is interlaced. Note that progressive() and interlaced() can return false both if the refresh mode is unspecifed.

◆ refreshModeName()

UString ts::MPEG2VideoAttributes::refreshModeName ( ) const

Get the refresh mode name.

Returns: The refresh mode as a string.

◆ chromaFormat()

uint8_t ts::MPEG2VideoAttributes::chromaFormat ( ) const

inline

Get chroma format.

Returns: Chroma format, code values are CHROMA_* from tsMPEG.h, 0 if unknown.

◆ chromaFormatName()

UString ts::MPEG2VideoAttributes::chromaFormatName ( ) const

Get chroma format name.

Returns: Chroma format as a string.

◆ frameRate()

size_t ts::MPEG2VideoAttributes::frameRate ( ) const

inline

Get frame rate: approximate value per second.

Returns: Approximate frame rate per second. Example: return 30 for NTSC (actual NTSC rate is 30/1.001 = 29.97).

◆ frameRate100()

size_t ts::MPEG2VideoAttributes::frameRate100 ( ) const

inline

Get frame rate per 100 seconds.

Returns: Frame rate per 100 second. Example: return 2997 for NTSC (actual NTSC rate is 30/1.001 = 29.97).

◆ frameRateNumerator()

size_t ts::MPEG2VideoAttributes::frameRateNumerator ( ) const

inline

Get frame rate numerator.

Returns: Frame rate numerator. Example: return 30000 for NTSC (actual NTSC rate is 30/1.001 = 29.97).

◆ frameRateDivider()

size_t ts::MPEG2VideoAttributes::frameRateDivider ( ) const

inline

Get frame rate divider.

Returns: Frame rate divider. Example: return 1001 for NTSC (actual NTSC rate is 30/1.001 = 29.97).

◆ frameRateName()

UString ts::MPEG2VideoAttributes::frameRateName ( ) const

Get frame rate name.

Returns: Frame rate as a string. Example: return "@29.97 Hz" for NTSC (actual NTSC rate is 30/1.001 = 29.97).

◆ maximumBitRate()

uint32_t ts::MPEG2VideoAttributes::maximumBitRate ( ) const

inline

Maximum bitrate.

Returns: Maximum bitrate in bits/second.

◆ vbvSize()

size_t ts::MPEG2VideoAttributes::vbvSize ( ) const

inline

Video Buffering Verifier size in bits.

Returns: Video Buffering Verifier size in bits.

◆ isValid()

bool ts::AbstractAudioVideoAttributes::isValid ( ) const

inlineinherited

Check if the values in the object are valid.

Returns: True if the values in the object are valid.

◆ invalidate()

void ts::AbstractAudioVideoAttributes::invalidate ( )

inlineinherited

Invalidate the content of this instance.

It must be rebuilt using audio/video binary data.

Member Data Documentation

◆ _is_valid

bool ts::AbstractAudioVideoAttributes::_is_valid = false

protectedinherited

A flag which indicates if the content of this object is valid.

It is the responsibility of the subclasses to set it.

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

tsMPEG2VideoAttributes.h

Public Member Functions

Protected Attributes

Detailed Description

Member Function Documentation

◆ moreBinaryData()

◆ toString()

◆ horizontalSize()

◆ verticalSize()

◆ aspectRatioCode()

◆ aspectRatioName()

◆ progressive()

◆ interlaced()

◆ refreshModeName()

◆ chromaFormat()

◆ chromaFormatName()

◆ frameRate()

◆ frameRate100()

◆ frameRateNumerator()

◆ frameRateDivider()

◆ frameRateName()

◆ maximumBitRate()

◆ vbvSize()

◆ isValid()

◆ invalidate()

Member Data Documentation

◆ _is_valid