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)
void	add (const void *b, unsigned long b_len, std::chrono::milliseconds timecode, int c, int p) override
Public Member Functions inherited from MythTV::Visual
	Visual ()
virtual	~Visual ()
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 }
FFTComplex *	m_dftL { nullptr }
FFTComplex *	m_dftR { nullptr }
FFTContext *	m_fftContextForward { 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

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 14 of file videovisualspectrum.h.

Constructor & Destructor Documentation

VideoVisualSpectrum()

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

Definition at line 13 of file videovisualspectrum.cpp.

~VideoVisualSpectrum()

VideoVisualSpectrum::~VideoVisualSpectrum ( )

override

Definition at line 21 of file videovisualspectrum.cpp.

Member Function Documentation

Draw()

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

overridevirtual

Implements VideoVisual.

Definition at line 30 of file videovisualspectrum.cpp.

Name()

QString VideoVisualSpectrum::Name ( )

inlineoverridevirtual

Implements VideoVisual.

Definition at line 21 of file videovisualspectrum.h.

prepare()

void VideoVisualSpectrum::prepare ( )

overridevirtual

Reimplemented from VideoVisual.

Definition at line 112 of file videovisualspectrum.cpp.

Initialise()

bool VideoVisualSpectrum::Initialise ( QRect  Area )

protectedvirtual

Definition at line 135 of file videovisualspectrum.cpp.

Referenced by Draw().

InitialisePriv()

bool VideoVisualSpectrum::InitialisePriv ( )

protectedvirtual

Reimplemented in VideoVisualCircles.

Definition at line 151 of file videovisualspectrum.cpp.

Referenced by Initialise().

DrawPriv()

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

protectedvirtual

Reimplemented in VideoVisualCircles, and MythVisualCirclesVulkan.

Definition at line 118 of file videovisualspectrum.cpp.

Referenced by Draw().

Member Data Documentation

m_numSamples

int VideoVisualSpectrum::m_numSamples { 64 }

protected

Definition at line 29 of file videovisualspectrum.h.

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

m_magnitudes

QVector<double> VideoVisualSpectrum::m_magnitudes

protected

Definition at line 30 of file videovisualspectrum.h.

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

m_range

double VideoVisualSpectrum::m_range { 1.0 }

protected

Definition at line 31 of file videovisualspectrum.h.

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

m_scale

LogScale VideoVisualSpectrum::m_scale

protected

Definition at line 32 of file videovisualspectrum.h.

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

m_scaleFactor

double VideoVisualSpectrum::m_scaleFactor { 2.0 }

protected

Definition at line 33 of file videovisualspectrum.h.

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

m_falloff

double VideoVisualSpectrum::m_falloff { 3.0 }

protected

Definition at line 34 of file videovisualspectrum.h.

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

m_dftL

FFTComplex* VideoVisualSpectrum::m_dftL { nullptr }

protected

Definition at line 36 of file videovisualspectrum.h.

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

m_dftR

FFTComplex* VideoVisualSpectrum::m_dftR { nullptr }

protected

Definition at line 37 of file videovisualspectrum.h.

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

m_fftContextForward

FFTContext* VideoVisualSpectrum::m_fftContextForward { nullptr }

protected

Definition at line 38 of file videovisualspectrum.h.

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

m_rects

QVector<QRect> VideoVisualSpectrum::m_rects

private

Definition at line 41 of file videovisualspectrum.h.

Referenced by DrawPriv(), and InitialisePriv().

m_barWidth

int VideoVisualSpectrum::m_barWidth { 1 }

private

Definition at line 42 of file videovisualspectrum.h.

Referenced by Initialise(), and 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