SequenceHeader Class Reference

#include <libmythtv/mpeg/pespacket.h>

Collaboration diagram for SequenceHeader:

Public Member Functions
uint	width (void) const
uint	height (void) const
uint	aspectNum (void) const
uint	fpsNum (void) const
float	fps (void) const
float	aspect (bool mpeg1) const
	Returns the screen aspect ratio. More...

Private Member Functions
	SequenceHeader ()
	~SequenceHeader ()

Private Attributes
std::array< unsigned char, 11 >	m_data {}

Static Private Attributes
static const AspectArray	kMpeg1Aspect
static const AspectArray	kMpeg2Aspect
	The negative values are screen aspect ratios, while the positive ones are pixel aspect ratios. More...
static const AspectArray	kMpeg2Fps

Detailed Description

Definition at line 238 of file pespacket.h.

Constructor & Destructor Documentation

SequenceHeader()

SequenceHeader::SequenceHeader ( )

inlineprivate

Definition at line 249 of file pespacket.h.

~SequenceHeader()

SequenceHeader::~SequenceHeader ( )

inlineprivate

Definition at line 250 of file pespacket.h.

Member Function Documentation

width()

uint SequenceHeader::width ( void  ) const

inline

Definition at line 241 of file pespacket.h.

Referenced by aspect().

height()

uint SequenceHeader::height ( void  ) const

inline

Definition at line 242 of file pespacket.h.

Referenced by aspect().

aspectNum()

uint SequenceHeader::aspectNum ( void  ) const

inline

Definition at line 243 of file pespacket.h.

Referenced by aspect().

fpsNum()

uint SequenceHeader::fpsNum ( void  ) const

inline

Definition at line 244 of file pespacket.h.

Referenced by fps().

fps()

float SequenceHeader::fps ( void  ) const

inline

Definition at line 245 of file pespacket.h.

aspect()

float SequenceHeader::aspect

(

bool

mpeg1

)

const

Returns the screen aspect ratio.

Definition at line 234 of file pespacket.cpp.

Referenced by AvFormatDecoder::MpegPreProcessPkt().

Member Data Documentation

m_data

std::array<unsigned char,11> SequenceHeader::m_data {}

private

Definition at line 252 of file pespacket.h.

Referenced by aspectNum(), fpsNum(), height(), and width().

kMpeg1Aspect

const AspectArray SequenceHeader::kMpeg1Aspect

staticprivate

Initial value:

{
    0.0000F,       1.0000F,       0.6735F,       0.7031F,
    0.7615F,       0.8055F,       0.8437F,       0.8935F,
    0.9157F,       0.9815F,       1.0255F,       1.0695F,
    1.0950F,       1.1575F,       1.2015F,       0.0000F,
}

Definition at line 253 of file pespacket.h.

Referenced by aspect().

kMpeg2Aspect

const AspectArray SequenceHeader::kMpeg2Aspect

staticprivate

Initial value:

{
    0.0000F,       1.0000F,      -3.0F/4.0F,    -9.0F/16.0F,
   -1.0F/2.21F,    0.0000F,       0.0000F,       0.0000F,
    0.0000F,       0.0000F,       0.0000F,       0.0000F,
    0.0000F,       0.0000F,       0.0000F,       0.0000F,
}

The negative values are screen aspect ratios, while the positive ones are pixel aspect ratios.

Definition at line 254 of file pespacket.h.

Referenced by aspect().

kMpeg2Fps

const AspectArray SequenceHeader::kMpeg2Fps

staticprivate

Initial value:

{
    0.0F,          24000/1001.0F, 24.0F,        25.0F,
    30000/1001.0F, 30.0F,         50.0F,        60000/1001.0F,
    60.0F,         1.0F,          1.0F,         1.0F,
    1.0F,          1.0F,          1.0F,         1.0F,
}

Definition at line 255 of file pespacket.h.

Referenced by fps().

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

• mythtv/libs/libmythtv/mpeg/pespacket.h
• mythtv/libs/libmythtv/mpeg/pespacket.cpp