ts::MPEG2VideoAttributes Class Reference

#include <tsMPEG2VideoAttributes.h>

Inheritance diagram for ts::MPEG2VideoAttributes:

Collaboration diagram for ts::MPEG2VideoAttributes:

Public Member Functions
	MPEG2VideoAttributes ()=default
uint8_t	aspectRatioCode () const
UString	aspectRatioName () const
uint8_t	chromaFormat () const
UString	chromaFormatName () const
size_t	frameRate () const
size_t	frameRate100 () const
size_t	frameRateDivider () const
UString	frameRateName () const
size_t	frameRateNumerator () const
size_t	horizontalSize () const
bool	interlaced () const
void	invalidate ()
bool	isValid () const
uint32_t	maximumBitRate () const
virtual bool	moreBinaryData (const uint8_t *, size_t) override
bool	progressive () const
UString	refreshModeName () const
virtual UString	toString () const override
size_t	vbvSize () const
size_t	verticalSize () const

Protected Attributes
bool	_is_valid = false

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.

Constructor & Destructor Documentation

MPEG2VideoAttributes()

ts::MPEG2VideoAttributes::MPEG2VideoAttributes ( )

default

Default constructor.

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 unspecified.

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 unspecified.

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.

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

• tsMPEG2VideoAttributes.h