VideoVisualSpectrum Class Reference

#include <libmythtv/visualisations/videovisualspectrum.h>

Inheritance diagram for VideoVisualSpectrum:

Collaboration diagram for VideoVisualSpectrum:

Public Member Functions
	VideoVisualSpectrum (AudioPlayer *Audio, MythRender *Render)
	~VideoVisualSpectrum () override
void	Draw (QRect Area, MythPainter *Painter, QPaintDevice *Device) override
QString	Name () override
void	prepare () override
Public Member Functions inherited from VideoVisual
	VideoVisual (AudioPlayer *audio, MythRender *render)
	~VideoVisual () override
bool	NeedsPrepare () const
virtual void	Prepare (const QRect)
virtual void	Draw (QRect area, MythPainter *painter, QPaintDevice *device)=0
virtual QString	Name (void)=0
void	add (const void *b, unsigned long b_len, std::chrono::milliseconds timecode, int c, int p) override
void	prepare () override
Public Member Functions inherited from MythTV::Visual
	Visual ()
virtual	~Visual ()
virtual void	add (const void *b, unsigned long b_len, std::chrono::milliseconds timecode, int c, int p)=0
virtual void	prepare ()=0
QMutex *	mutex ()

Protected Member Functions
virtual bool	Initialise (QRect Area)
virtual bool	InitialisePriv ()
virtual void	DrawPriv (MythPainter *Painter, QPaintDevice *Device)
Protected Member Functions inherited from VideoVisual
VisualNode *	GetNode (void)
void	DeleteNodes (void)
std::chrono::milliseconds	SetLastUpdate (void)

Protected Attributes
int	m_numSamples { 64 }
QVector< double >	m_magnitudes
double	m_range { 1.0 }
LogScale	m_scale
double	m_scaleFactor { 2.0 }
double	m_falloff { 3.0 }
AVComplexFloat *	m_dftL { nullptr }
AVComplexFloat *	m_dftR { nullptr }
AVTXContext *	m_fftContext { nullptr }
av_tx_fn	m_fft { nullptr }
Protected Attributes inherited from VideoVisual
AudioPlayer *	m_audio { nullptr }
bool	m_needsPrepare { false }
bool	m_disabled { false }
QRect	m_area
MythRender *	m_render { nullptr }
QList< VisualNode * >	m_nodes
QDateTime	m_lastUpdate

Static Protected Attributes
static constexpr float	kScale { 1.0F }

Private Attributes
QVector< QRect >	m_rects
int	m_barWidth { 1 }

Additional Inherited Members
Static Public Member Functions inherited from VideoVisual
static VideoVisual *	Create (const QString &name, AudioPlayer *audio, MythRender *render)
static QStringList	GetVisualiserList (RenderType type)

Detailed Description

Definition at line 13 of file videovisualspectrum.h.

Constructor & Destructor Documentation

VideoVisualSpectrum()

VideoVisualSpectrum::VideoVisualSpectrum	(	AudioPlayer *	Audio,
		MythRender *	Render
	)

Definition at line 19 of file videovisualspectrum.cpp.

~VideoVisualSpectrum()

VideoVisualSpectrum::~VideoVisualSpectrum ( )

override

Definition at line 29 of file videovisualspectrum.cpp.

Member Function Documentation

Draw()

void VideoVisualSpectrum::Draw ( QRect  Area, MythPainter *  Painter, QPaintDevice *  Device  )

overridevirtual

Implements VideoVisual.

Definition at line 38 of file videovisualspectrum.cpp.

DrawPriv()

void VideoVisualSpectrum::DrawPriv ( MythPainter *  Painter, QPaintDevice *  Device  )

protectedvirtual

Reimplemented in MythVisualCirclesVulkan, and VideoVisualCircles.

Definition at line 123 of file videovisualspectrum.cpp.

Referenced by Draw().

Initialise()

bool VideoVisualSpectrum::Initialise ( QRect  Area )

protectedvirtual

Definition at line 140 of file videovisualspectrum.cpp.

Referenced by Draw().

InitialisePriv()

bool VideoVisualSpectrum::InitialisePriv ( )

protectedvirtual

Reimplemented in VideoVisualCircles.

Definition at line 156 of file videovisualspectrum.cpp.

Referenced by Initialise().

Name()

QString VideoVisualSpectrum::Name ( void  )

inlineoverridevirtual

Implements VideoVisual.

Definition at line 20 of file videovisualspectrum.h.

prepare()

void VideoVisualSpectrum::prepare ( void  )

overridevirtual

Reimplemented from VideoVisual.

Definition at line 117 of file videovisualspectrum.cpp.

Member Data Documentation

kScale

constexpr float VideoVisualSpectrum::kScale { 1.0F }

staticconstexprprotected

Definition at line 37 of file videovisualspectrum.h.

Referenced by VideoVisualSpectrum().

m_barWidth

int VideoVisualSpectrum::m_barWidth { 1 }

private

Definition at line 44 of file videovisualspectrum.h.

Referenced by Initialise(), and InitialisePriv().

m_dftL

AVComplexFloat* VideoVisualSpectrum::m_dftL { nullptr }

protected

Definition at line 35 of file videovisualspectrum.h.

Referenced by Draw(), and ~VideoVisualSpectrum().

m_dftR

AVComplexFloat* VideoVisualSpectrum::m_dftR { nullptr }

protected

Definition at line 36 of file videovisualspectrum.h.

Referenced by Draw(), and ~VideoVisualSpectrum().

m_falloff

double VideoVisualSpectrum::m_falloff { 3.0 }

protected

Definition at line 33 of file videovisualspectrum.h.

Referenced by Draw(), InitialisePriv(), and VideoVisualCircles::InitialisePriv().

m_fft

av_tx_fn VideoVisualSpectrum::m_fft { nullptr }

protected

Definition at line 39 of file videovisualspectrum.h.

Referenced by Draw(), and VideoVisualSpectrum().

m_fftContext

AVTXContext* VideoVisualSpectrum::m_fftContext { nullptr }

protected

Definition at line 38 of file videovisualspectrum.h.

Referenced by Draw(), VideoVisualSpectrum(), and ~VideoVisualSpectrum().

m_magnitudes

QVector<double> VideoVisualSpectrum::m_magnitudes

protected

Definition at line 29 of file videovisualspectrum.h.

Referenced by Draw(), MythVisualCirclesVulkan::DrawPriv(), DrawPriv(), VideoVisualCircles::DrawPriv(), Initialise(), and prepare().

m_numSamples

int VideoVisualSpectrum::m_numSamples { 64 }

protected

Definition at line 28 of file videovisualspectrum.h.

Referenced by Initialise(), and VideoVisualCircles::VideoVisualCircles().

m_range

double VideoVisualSpectrum::m_range { 1.0 }

protected

Definition at line 30 of file videovisualspectrum.h.

Referenced by Draw(), MythVisualCirclesVulkan::DrawPriv(), VideoVisualCircles::DrawPriv(), InitialisePriv(), and VideoVisualCircles::InitialisePriv().

m_rects

QVector<QRect> VideoVisualSpectrum::m_rects

private

Definition at line 43 of file videovisualspectrum.h.

Referenced by DrawPriv(), and InitialisePriv().

m_scale

LogScale VideoVisualSpectrum::m_scale

protected

Definition at line 31 of file videovisualspectrum.h.

Referenced by Draw(), MythVisualCirclesVulkan::DrawPriv(), DrawPriv(), VideoVisualCircles::DrawPriv(), Initialise(), InitialisePriv(), and VideoVisualCircles::InitialisePriv().

m_scaleFactor

double VideoVisualSpectrum::m_scaleFactor { 2.0 }

protected

Definition at line 32 of file videovisualspectrum.h.

Referenced by Draw(), InitialisePriv(), and VideoVisualCircles::InitialisePriv().

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

• mythtv/libs/libmythtv/visualisations/videovisualspectrum.h
• mythtv/libs/libmythtv/visualisations/videovisualspectrum.cpp