#include <QGCQVideoSinkController.h>

Inheritance diagram for QGCQVideoSinkController:

Collaboration diagram for QGCQVideoSinkController:

Public Slots
void	refreshLatency ()

Signals
void	frameCountsChanged ()

void	negotiationChanged ()

Public Member Functions
	QGCQVideoSinkController (GstElement element, QObject parent=nullptr)

	~QGCQVideoSinkController () override

void	setActive (bool active)

void	setVideoSink (QPointer< QVideoSink > sink)

void	prepareForRelease ()

const GstElement *	element () const noexcept

void	updateNegotiation (const QString &format, const QSize &resolution)

quint64	frameCount () const noexcept

QString	negotiatedFormat () const

QSize	negotiatedResolution () const

Static Public Member Functions
static QList< QGCQVideoSinkController * >	controllersOf (const QObject *receiver)
	A receiver's owning controllers — direct children only, never a deep QObject-tree walk.

static void	syncActiveToWindowVisibility (QObject receiver, QQuickVideoOutput videoOutput)

Detailed Description

GUI-thread companion for the GstQgcQVideoSink element: mirrors negotiation/telemetry into Q_PROPERTYs for QML and owns the 1 Hz timer polling frames-delivered. Driven by GstVideoReceiver's bus pump. Ownership: parent owns the controller; the controller owns one GstElement ref so deferred QObject teardown can still clear the element binding.

Definition at line 20 of file QGCQVideoSinkController.h.

Constructor & Destructor Documentation

◆ QGCQVideoSinkController()

QGCQVideoSinkController::QGCQVideoSinkController	(	GstElement *	element,
		QObject *	parent = `nullptr`
	)

element is the GstQgcQVideoSink to control. Controller takes a ref so QObject teardown can safely clear the element binding even if the parent bin is released first.

Definition at line 16 of file QGCQVideoSinkController.cc.

◆ ~QGCQVideoSinkController()

QGCQVideoSinkController::~QGCQVideoSinkController ( )

override

Definition at line 25 of file QGCQVideoSinkController.cc.

Member Function Documentation

◆ controllersOf()

QList< QGCQVideoSinkController * > QGCQVideoSinkController::controllersOf ( const QObject * receiver )

static

A receiver's owning controllers — direct children only, never a deep QObject-tree walk.

Definition at line 35 of file QGCQVideoSinkController.cc.

Referenced by GStreamer::setupQVideoSinkElement(), and syncActiveToWindowVisibility().

◆ element()

const GstElement * QGCQVideoSinkController::element ( ) const

noexcept

Definition at line 72 of file QGCQVideoSinkController.cc.

◆ frameCount()

quint64 QGCQVideoSinkController::frameCount ( ) const

noexcept

Definition at line 165 of file QGCQVideoSinkController.cc.

References delivered.

◆ frameCountsChanged

void QGCQVideoSinkController::frameCountsChanged ( )

signal

◆ negotiatedFormat()

QString QGCQVideoSinkController::negotiatedFormat ( ) const

Definition at line 174 of file QGCQVideoSinkController.cc.

◆ negotiatedResolution()

QSize QGCQVideoSinkController::negotiatedResolution ( ) const

Definition at line 180 of file QGCQVideoSinkController.cc.

◆ negotiationChanged

void QGCQVideoSinkController::negotiationChanged ( )

signal

Referenced by updateNegotiation().

◆ prepareForRelease()

void QGCQVideoSinkController::prepareForRelease ( )

Stop the poll timer synchronously ahead of deleteLater so a deferred destruction can't keep binding the element while a replacement controller is installed on it. Idempotent.

Definition at line 155 of file QGCQVideoSinkController.cc.

◆ refreshLatency

void QGCQVideoSinkController::refreshLatency ( )

slot

Re-prime sink-side latency after a pipeline latency recalculation (e.g. RTSP jitter-buffer reconfigure). Re-queries the element latency and pushes it back.

Definition at line 101 of file QGCQVideoSinkController.cc.

References GStreamer::adoptQuery().

◆ setActive()

void QGCQVideoSinkController::setActive ( bool active )

Definition at line 117 of file QGCQVideoSinkController.cc.

◆ setVideoSink()

void QGCQVideoSinkController::setVideoSink ( QPointer< QVideoSink > sink )

Definition at line 128 of file QGCQVideoSinkController.cc.

References setVideoSink().

Referenced by setVideoSink().

◆ syncActiveToWindowVisibility()

void QGCQVideoSinkController::syncActiveToWindowVisibility	(	QObject *	receiver,
		QQuickVideoOutput *	videoOutput
	)

static

Sync every controller owned by receiver to videoOutput's window visibility (drop frames while hidden/minimized), re-wiring across windowChanged. Wiring is parented to receiver.

Definition at line 41 of file QGCQVideoSinkController.cc.

References controllersOf().

Referenced by GStreamer::attachAppSink().

◆ updateNegotiation()

void QGCQVideoSinkController::updateNegotiation	(	const QString &	format,
		const QSize &	resolution
	)

Definition at line 77 of file QGCQVideoSinkController.cc.

References negotiationChanged().

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

src/VideoManager/VideoReceiver/GStreamer/QGCQVideoSinkController.h
src/VideoManager/VideoReceiver/GStreamer/QGCQVideoSinkController.cc

Public Slots

Signals

Public Member Functions

Static Public Member Functions