MythAVRational Class Reference

C++ wrapper for FFmpeg libavutil AVRational. More...

#include <libmythtv/mythavrational.h>

Public Member Functions
	MythAVRational (int n=0, int d=1)
	MythAVRational (AVRational q)
AVRational	get_q () const
long long	toFixed (long long base) const
	Convert the rational number to fixed point. More...
double	toDouble () const
QString	toString () const
bool	isNonzero () const
bool	isValid () const
MythAVRational	reduce (int64_t max) const
MythAVRational	reduce (int64_t max, bool &exact) const
MythAVRational	invert () const
MythAVRational &	operator+= (MythAVRational rhs)
MythAVRational &	operator-= (MythAVRational rhs)
MythAVRational &	operator*= (MythAVRational rhs)
MythAVRational &	operator/= (MythAVRational rhs)

Static Public Member Functions
static MythAVRational	fromDouble (double d, int64_t max)
	Convert a double to a MythAVRational. More...
static int	cmp (MythAVRational a, MythAVRational b)

Private Attributes
AVRational	m_q {.num = 0, .den = 1}

Detailed Description

C++ wrapper for FFmpeg libavutil AVRational.

Definition at line 14 of file mythavrational.h.

Constructor & Destructor Documentation

MythAVRational() [1/2]

MythAVRational::MythAVRational ( int  n = 0, int  d = 1  )

inlineexplicit

Definition at line 17 of file mythavrational.h.

Referenced by fromDouble(), and invert().

MythAVRational() [2/2]

MythAVRational::MythAVRational ( AVRational  q )

inlineexplicit

Definition at line 18 of file mythavrational.h.

Member Function Documentation

cmp()

static int MythAVRational::cmp ( MythAVRational  a, MythAVRational  b  )

inlinestatic

Definition at line 59 of file mythavrational.h.

Referenced by operator!=(), operator<(), operator<=(), operator==(), operator>(), and operator>=().

fromDouble()

static MythAVRational MythAVRational::fromDouble ( double  d, int64_t  max  )

inlinestatic

Convert a double to a MythAVRational.

Note

This is not an overload of the constructor since that would create calls to ambiguous overloads.

Definition at line 25 of file mythavrational.h.

get_q()

AVRational MythAVRational::get_q ( ) const

inline

Definition at line 30 of file mythavrational.h.

Referenced by operator*(), operator+(), operator-(), and operator/().

invert()

MythAVRational MythAVRational::invert ( ) const

inline

Definition at line 57 of file mythavrational.h.

Referenced by DTVRecorder::UpdateFramesWritten().

isNonzero()

bool MythAVRational::isNonzero ( ) const

inline

Definition at line 42 of file mythavrational.h.

Referenced by DecoderBase::SaveTotalDuration(), and DTVRecorder::UpdateFramesWritten().

isValid()

bool MythAVRational::isValid ( ) const

inline

Returns

True, if the denominator is not zero; 0/0 is indeterminate and x/0 is undefined.

Definition at line 44 of file mythavrational.h.

Referenced by DecoderBase::SaveTotalDuration().

operator*=()

MythAVRational & MythAVRational::operator*= ( MythAVRational  rhs )

inline

Definition at line 98 of file mythavrational.h.

operator+=()

MythAVRational & MythAVRational::operator+= ( MythAVRational  rhs )

inline

Definition at line 96 of file mythavrational.h.

operator-=()

MythAVRational & MythAVRational::operator-= ( MythAVRational  rhs )

inline

Definition at line 97 of file mythavrational.h.

operator/=()

MythAVRational & MythAVRational::operator/= ( MythAVRational  rhs )

inline

Definition at line 99 of file mythavrational.h.

reduce() [1/2]

MythAVRational MythAVRational::reduce ( int64_t  max ) const

inline

Definition at line 46 of file mythavrational.h.

Referenced by reduce().

reduce() [2/2]

MythAVRational MythAVRational::reduce ( int64_t  max, bool &  exact  ) const

inline

Definition at line 51 of file mythavrational.h.

toDouble()

double MythAVRational::toDouble ( ) const

inline

Definition at line 36 of file mythavrational.h.

Referenced by DTVRecorder::UpdateFramesWritten().

toFixed()

long long MythAVRational::toFixed ( long long  base ) const

inline

Convert the rational number to fixed point.

Definition at line 32 of file mythavrational.h.

Referenced by AvFormatDecoder::HandleGopStart(), and DecoderBase::SaveTotalDuration().

toString()

QString MythAVRational::toString ( void  ) const

inline

Definition at line 37 of file mythavrational.h.

Referenced by DTVRecorder::UpdateFramesWritten().

Member Data Documentation

m_q

AVRational MythAVRational::m_q {.num = 0, .den = 1}

private

Definition at line 66 of file mythavrational.h.

Referenced by cmp(), get_q(), invert(), isNonzero(), isValid(), reduce(), toDouble(), toFixed(), and toString().

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

• mythtv/libs/libmythtv/mythavrational.h