Classes
struct	EnvPrepResult

Functions
VideoReceiver *	createReceiver (QObject *parent)

void *	createSink (QQuickItem widget, QObject parent)

void	releaseSink (void *sink)

bool	gpuZeroCopyAllowedForCurrentGraphicsApi (bool forceCpuVideoPath, bool forceSoftwareDecoder)
	Applies backend-wide sink policy before constructing the GStreamer sink.

constexpr bool	needsAsyncInit () noexcept

bool	disabledForUnitTests ()
	True when the backend should be skipped under unit tests (opt back in with QGC_TEST_ENABLE_GSTREAMER).

EnvPrepResult	prepareEnvironment ()

bool	initialize (const QStringList &arguments, const EnvPrepResult &envResult)

void	applyDecoderPriorities (int rawOption)

void	onMainWindowReady (QQuickWindow *window)

void	bindDebugLevelFact (Fact fact, QObject context)

void	attachSink (QObject receiver, void sink, QQuickItem *widget)

Detailed Description

Backend-neutral video backend facade: object creation plus process/runtime lifecycle. Selects GStreamer or QtMultimedia at compile time via QGC_GST_STREAMING so callers (VideoManager, QGCCorePlugin) never name a concrete backend.

Function Documentation

◆ applyDecoderPriorities()

void VideoBackend::applyDecoderPriorities ( int rawOption )

Definition at line 110 of file VideoBackend.cc.

References GStreamer::setCodecPriorities().

◆ attachSink()

void VideoBackend::attachSink	(	QObject *	receiver,
		void *	sink,
		QQuickItem *	widget
	)

Definition at line 138 of file VideoBackend.cc.

References GStreamer::attachAppSink().

◆ bindDebugLevelFact()

void VideoBackend::bindDebugLevelFact	(	Fact *	fact,
		QObject *	context
	)

Definition at line 128 of file VideoBackend.cc.

References GStreamer::bindDebugLevelFact().

Referenced by VideoManager::init().

◆ createReceiver()

VideoReceiver * VideoBackend::createReceiver ( QObject * parent )

Definition at line 46 of file VideoBackend.cc.

References GStreamer::createVideoReceiver(), and QtMultimediaReceiver::createVideoReceiver().

Referenced by QGCCorePlugin::createVideoReceiver().

◆ createSink()

void * VideoBackend::createSink	(	QQuickItem *	widget,
		QObject *	parent
	)

Definition at line 55 of file VideoBackend.cc.

References config, GStreamer::VideoSinkConfig::conversionElement, GStreamer::createVideoSink(), QtMultimediaReceiver::createVideoSink(), GStreamer::ForceVideoDecoderSoftware, gpuZeroCopyAllowedForCurrentGraphicsApi(), SettingsManager::instance(), qApp, and SettingsManager::videoSettings().

Referenced by QGCCorePlugin::createVideoSink().

◆ disabledForUnitTests()

bool VideoBackend::disabledForUnitTests ( )

True when the backend should be skipped under unit tests (opt back in with QGC_TEST_ENABLE_GSTREAMER).

Definition at line 84 of file VideoBackend.cc.

References qgcApp, and QGC::runningUnitTests().

Referenced by VideoManager::VideoManager().

◆ gpuZeroCopyAllowedForCurrentGraphicsApi()

bool VideoBackend::gpuZeroCopyAllowedForCurrentGraphicsApi	(	bool	forceCpuVideoPath,
		bool	forceSoftwareDecoder
	)

Applies backend-wide sink policy before constructing the GStreamer sink.

Definition at line 35 of file VideoBackend.cc.

Referenced by createSink().

◆ initialize()

bool VideoBackend::initialize	(	const QStringList &	arguments,
		const EnvPrepResult &	envResult
	)

Definition at line 99 of file VideoBackend.cc.

References VideoBackend::EnvPrepResult::error, GStreamer::initialize(), and VideoBackend::EnvPrepResult::ok.

Referenced by VideoManager::startVideoBackendInit().

◆ needsAsyncInit()

constexpr bool VideoBackend::needsAsyncInit ( )

constexprnoexcept

True when a streaming backend that requires asynchronous global init is compiled in (GStreamer). QtMultimedia needs no global init, so callers treat it as ready immediately.

Definition at line 27 of file VideoBackend.h.

Referenced by VideoManager::init(), VideoManager::startVideoBackendInit(), VideoManager::VideoManager(), and VideoManager::waitForVideoBackendReady().