#include <qffmpegaudiorenderer_p.h>

Inheritance diagram for QFFmpeg::AudioRenderer:

Collaboration diagram for QFFmpeg::AudioRenderer:

Classes
struct	SynchronizationStamp
struct	BufferLoadingInfo
struct	AudioTimings
struct	BufferedDataWithOffset

Public Member Functions
	AudioRenderer (const PlaybackEngineObjectID &id, const TimeController &tc, QAudioOutput output, QAudioBufferOutput bufferOutput, bool pitchCompensation)
void	setOutput (QAudioOutput *output)
void	setOutput (QAudioBufferOutput *bufferOutput)
void	setPitchCompensation (bool enabled)
	~AudioRenderer () override
Public Member Functions inherited from QFFmpeg::Renderer
	Renderer (const PlaybackEngineObjectID &id, const TimeController &tc)
TrackPosition	seekPosition () const
TrackPosition	lastPosition () const
void	setPlaybackRate (float rate)
void	doForceStep ()
bool	isStepForced () const
void	setTimeController (const TimeController &tc)
Public Member Functions inherited from QFFmpeg::PlaybackEngineObject
	PlaybackEngineObject (const PlaybackEngineObjectID &id)
	~PlaybackEngineObject () override
bool	isPaused () const
bool	isAtEnd () const
void	kill ()
void	setPaused (bool isPaused)
quint64	objectID () const
Public Member Functions inherited from QObject
Q_INVOKABLE	QObject (QObject *parent=nullptr)
	Constructs an object with parent object parent.
virtual	~QObject ()
	Destroys the object, deleting all its child objects.
virtual bool	eventFilter (QObject watched, QEvent event)
	Filters events if this object has been installed as an event filter for the watched object.
QString	objectName () const
Q_WEAK_OVERLOAD void	setObjectName (const QString &name)
	Sets the object's name to name.
void	setObjectName (QAnyStringView name)
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.
QBindable< QString >	bindableObjectName ()
bool	isWidgetType () const
	Returns `true` if the object is a widget; otherwise returns `false`.
bool	isWindowType () const
	Returns `true` if the object is a window; otherwise returns `false`.
bool	isQuickItemType () const
	Returns `true` if the object is a QQuickItem; otherwise returns `false`.
bool	isQmlObjectType () const
	Returns whether the object has been created by the QML engine or ownership has been explicitly set via QJSEngine::setObjectOwnership().
bool	signalsBlocked () const noexcept
	Returns `true` if signals are blocked; otherwise returns `false`.
bool	blockSignals (bool b) noexcept
	If block is true, signals emitted by this object are blocked (i.e., emitting a signal will not invoke anything connected to it).
QThread *	thread () const
	Returns the thread in which the object lives.
bool	moveToThread (QThread *thread QT6_DECL_NEW_OVERLOAD_TAIL)
	Changes the thread affinity for this object and its children and returns `true` on success.
int	startTimer (int interval, Qt::TimerType timerType=Qt::CoarseTimer)
	This is an overloaded function that will start a timer of type timerType and a timeout of interval milliseconds.
int	startTimer (std::chrono::nanoseconds time, Qt::TimerType timerType=Qt::CoarseTimer)
void	killTimer (int id)
	Kills the timer with timer identifier, id.
void	killTimer (Qt::TimerId id)
template<typename T>
T	findChild (QAnyStringView aName, Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
	Returns the child of this object that can be cast into type T and that is called name, or \nullptr if there is no such object.
template<typename T>
QList< T >	findChildren (QAnyStringView aName, Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
	Returns all children of this object with the given name that can be cast to type T, or an empty list if there are no such objects.
template<typename T>
T	findChild (Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.
template<typename T>
QList< T >	findChildren (Qt::FindChildOptions options=Qt::FindChildrenRecursively) const
	This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.
const QObjectList &	children () const
	Returns a list of child objects.
void	setParent (QObject *parent)
	Makes the object a child of parent.
void	installEventFilter (QObject *filterObj)
	Installs an event filter filterObj on this object.
void	removeEventFilter (QObject *obj)
	Removes an event filter object obj from this object.
QMetaObject::Connection	connect (const QObject sender, const char signal, const char *member, Qt::ConnectionType type=Qt::AutoConnection) const
bool	disconnect (const char signal=nullptr, const QObject receiver=nullptr, const char *member=nullptr) const
bool	disconnect (const QObject receiver, const char member=nullptr) const
void	dumpObjectTree () const
	Dumps a tree of children to the debug output.
void	dumpObjectInfo () const
	Dumps information about signal connections, etc.
bool	setProperty (const char *name, const QVariant &value)
	Sets the value of the object's name property to value.
bool	setProperty (const char *name, QVariant &&value)
QVariant	property (const char *name) const
	Returns the value of the object's name property.
QList< QByteArray >	dynamicPropertyNames () const
QBindingStorage *	bindingStorage ()
const QBindingStorage *	bindingStorage () const
QObject *	parent () const
	Returns a pointer to the parent object.
bool	inherits (const char *classname) const
	Returns `true` if this object is an instance of a class that inherits className or a QObject subclass that inherits className; otherwise returns `false`.

Protected Types
using	Microseconds = std::chrono::microseconds

Protected Member Functions
RenderingResult	renderInternal (Frame frame) override
RenderingResult	pushFrameToOutput (const Frame &frame)
void	pushFrameToBufferOutput (const Frame &frame)
void	onPlaybackRateChanged () override
TimePoint	nextTimePoint () const override
void	onPauseChanged () override
void	freeOutput ()
void	updateOutputs (const Frame &frame)
void	initAudioFrameConverter (const Frame &frame)
void	onDeviceChanged ()
void	updateVolume ()
void	updateSynchronization (const SynchronizationStamp &stamp, const Frame &frame)
Microseconds	bufferLoadingTime (const SynchronizationStamp &syncStamp) const
void	onAudioSinkStateChanged (QAudio::State state)
Microseconds	durationForBytes (qsizetype bytes) const
Protected Member Functions inherited from QFFmpeg::Renderer
bool	setForceStepDone ()
void	onPauseChanged () override
bool	canDoNextStep () const override
TimePoint	nextTimePoint () const override
float	playbackRate () const
std::chrono::microseconds	frameDelay (const Frame &frame, TimePoint timePoint=SteadyClock::now()) const
void	changeRendererTime (std::chrono::microseconds offset)
template<typename Output, typename ChangeHandler>
void	setOutputInternal (QPointer< Output > &actual, Output *desired, ChangeHandler &&changeHandler)
Protected Member Functions inherited from QFFmpeg::PlaybackEngineObject
bool	event (QEvent *e) override
	This virtual function receives events to an object and should return true if the event e was recognized and processed.
bool	checkSessionID (quint64 sessionID) const
bool	checkID (const PlaybackEngineObjectID &id) const
const PlaybackEngineObjectID &	id () const
template<typename F>
void	invokePriorityMethod (F &&f)
QChronoTimer &	timer ()
void	scheduleNextStep ()
void	setAtEnd (bool isAtEnd)
Protected Member Functions inherited from QObject
QObject *	sender () const
	Returns a pointer to the object that sent the signal, if called in a slot activated by a signal; otherwise it returns \nullptr.
int	senderSignalIndex () const
int	receivers (const char *signal) const
	Returns the number of receivers connected to the signal.
bool	isSignalConnected (const QMetaMethod &signal) const
virtual void	timerEvent (QTimerEvent *event)
	This event handler can be reimplemented in a subclass to receive timer events for the object.
virtual void	childEvent (QChildEvent *event)
	This event handler can be reimplemented in a subclass to receive child events.
virtual void	customEvent (QEvent *event)
	This event handler can be reimplemented in a subclass to receive custom events.
virtual void	connectNotify (const QMetaMethod &signal)
virtual void	disconnectNotify (const QMetaMethod &signal)
	QObject (QObjectPrivate &dd, QObject *parent=nullptr)

Additional Inherited Members
Public Types inherited from QFFmpeg::Renderer
using	TimePoint = SteadyClock::time_point
Public Types inherited from QFFmpeg::PlaybackEngineObject
using	TimePoint = std::chrono::steady_clock::time_point
using	TimePointOpt = std::optional<TimePoint>
Public Slots inherited from QFFmpeg::Renderer
void	onFinalFrameReceived (PlaybackEngineObjectID sourceID)
void	render (Frame)
Public Slots inherited from QObject
void	deleteLater ()
	\threadsafe
Signals inherited from QFFmpeg::Renderer
void	frameProcessed (Frame)
void	synchronized (PlaybackEngineObjectID id, TimePoint tp, TrackPosition pos)
void	forceStepDone ()
void	loopChanged (PlaybackEngineObjectID id, TrackPosition offset, int index)
Signals inherited from QFFmpeg::PlaybackEngineObject
void	atEnd (PlaybackEngineObjectID id)
void	error (QMediaPlayer::Error, const QString &errorString)
Signals inherited from QObject
void	destroyed (QObject *=nullptr)
	This signal is emitted immediately before the object obj is destroyed, after any instances of QPointer have been notified, and cannot be blocked.
void	objectNameChanged (const QString &objectName, QPrivateSignal)
	This signal is emitted after the object's name has been changed.
Static Public Member Functions inherited from QObject
static QMetaObject::Connection	connect (const QObject sender, const char signal, const QObject receiver, const char member, Qt::ConnectionType=Qt::AutoConnection)
	\threadsafe
static QMetaObject::Connection	connect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &method, Qt::ConnectionType type=Qt::AutoConnection)
template<typename Func1, typename Func2>
static QMetaObject::Connection	connect (const typename QtPrivate::FunctionPointer< Func1 >::Object sender, Func1 signal, const typename QtPrivate::ContextTypeForFunctor< Func2 >::ContextType context, Func2 &&slot, Qt::ConnectionType type=Qt::AutoConnection)
template<typename Func1, typename Func2>
static QMetaObject::Connection	connect (const typename QtPrivate::FunctionPointer< Func1 >::Object *sender, Func1 signal, Func2 &&slot)
static bool	disconnect (const QObject sender, const char signal, const QObject receiver, const char member)
	\threadsafe
static bool	disconnect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &member)
static bool	disconnect (const QMetaObject::Connection &)
	Disconnect a connection.
template<typename Func1, typename Func2>
static bool	disconnect (const typename QtPrivate::FunctionPointer< Func1 >::Object sender, Func1 signal, const typename QtPrivate::FunctionPointer< Func2 >::Object receiver, Func2 slot)
template<typename Func1>
static bool	disconnect (const typename QtPrivate::FunctionPointer< Func1 >::Object sender, Func1 signal, const QObject receiver, void **zero)
Protected Attributes inherited from QObject
QScopedPointer< QObjectData >	d_ptr
Properties inherited from QObject
QString	objectName
	the name of this object
Related Symbols inherited from QObject
template< class T > T	qobject_cast (const QObject *object)
	Returns the given object cast to type T if the object is of type T (or of a subclass); otherwise returns \nullptr.
template< typename T > T	qFindChildqFindChildren (const QObject *obj, const QString &name)()
template< typename T > QList< T >	qFindChildrenqFindChildren (const QObject *obj, const QString &name)()
	QObjectList
	\macro Q_CLASSINFO(Name, Value)

Detailed Description

Definition at line 32 of file qffmpegaudiorenderer_p.h.

Member Typedef Documentation

◆ Microseconds

using QFFmpeg::AudioRenderer::Microseconds = std::chrono::microseconds

protected

Definition at line 48 of file qffmpegaudiorenderer_p.h.

Constructor & Destructor Documentation

◆ AudioRenderer()

QFFmpeg::AudioRenderer::AudioRenderer	(	const PlaybackEngineObjectID &	id,
		const TimeController &	tc,
		QAudioOutput *	output,
		QAudioBufferOutput *	bufferOutput,
		bool	pitchCompensation )

Definition at line 47 of file qffmpegaudiorenderer.cpp.

References onDeviceChanged(), and updateVolume().

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◆ ~AudioRenderer()

QFFmpeg::AudioRenderer::~AudioRenderer ( )

override

Definition at line 85 of file qffmpegaudiorenderer.cpp.

References freeOutput().

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Member Function Documentation

◆ bufferLoadingTime()

microseconds QFFmpeg::AudioRenderer::bufferLoadingTime ( const SynchronizationStamp & syncStamp ) const

protected

Definition at line 371 of file qffmpegaudiorenderer.cpp.

◆ durationForBytes()

microseconds QFFmpeg::AudioRenderer::durationForBytes ( qsizetype bytes ) const

protected

Definition at line 388 of file qffmpegaudiorenderer.cpp.

◆ freeOutput()

void QFFmpeg::AudioRenderer::freeOutput ( )

protected

Definition at line 231 of file qffmpegaudiorenderer.cpp.

Referenced by ~AudioRenderer(), and updateOutputs().

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◆ initAudioFrameConverter()

void QFFmpeg::AudioRenderer::initAudioFrameConverter ( const Frame & frame )

protected

Definition at line 220 of file qffmpegaudiorenderer.cpp.

◆ nextTimePoint()

AudioRenderer::TimePoint QFFmpeg::AudioRenderer::nextTimePoint ( ) const

overrideprotectedvirtual

Reimplemented from QFFmpeg::PlaybackEngineObject.

Definition at line 192 of file qffmpegaudiorenderer.cpp.

◆ onAudioSinkStateChanged()

void QFFmpeg::AudioRenderer::onAudioSinkStateChanged ( QAudio::State state )

protected

Definition at line 382 of file qffmpegaudiorenderer.cpp.

◆ onDeviceChanged()

void QFFmpeg::AudioRenderer::onDeviceChanged ( )

protected

Definition at line 96 of file qffmpegaudiorenderer.cpp.

Referenced by AudioRenderer(), and setOutput().

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◆ onPauseChanged()

void QFFmpeg::AudioRenderer::onPauseChanged ( )

overrideprotectedvirtual

Reimplemented from QFFmpeg::PlaybackEngineObject.

Definition at line 214 of file qffmpegaudiorenderer.cpp.

◆ onPlaybackRateChanged()

void QFFmpeg::AudioRenderer::onPlaybackRateChanged ( )

overrideprotectedvirtual

Reimplemented from QFFmpeg::Renderer.

Definition at line 187 of file qffmpegaudiorenderer.cpp.

◆ pushFrameToBufferOutput()

void QFFmpeg::AudioRenderer::pushFrameToBufferOutput ( const Frame & frame )

protected

Definition at line 171 of file qffmpegaudiorenderer.cpp.

◆ pushFrameToOutput()

AudioRenderer::RenderingResult QFFmpeg::AudioRenderer::pushFrameToOutput ( const Frame & frame )

protected

Definition at line 119 of file qffmpegaudiorenderer.cpp.

◆ renderInternal()

Renderer::RenderingResult QFFmpeg::AudioRenderer::renderInternal ( Frame frame )

overrideprotectedvirtual

Implements QFFmpeg::Renderer.

Definition at line 101 of file qffmpegaudiorenderer.cpp.

◆ setOutput() [1/2]

void QFFmpeg::AudioRenderer::setOutput ( QAudioBufferOutput * bufferOutput )

Definition at line 68 of file qffmpegaudiorenderer.cpp.

◆ setOutput() [2/2]

void QFFmpeg::AudioRenderer::setOutput ( QAudioOutput * output )

Definition at line 63 of file qffmpegaudiorenderer.cpp.

References onDeviceChanged().

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◆ setPitchCompensation()

void QFFmpeg::AudioRenderer::setPitchCompensation ( bool enabled )

Definition at line 74 of file qffmpegaudiorenderer.cpp.

Referenced by QFFmpeg::PlaybackEngine::setPitchCompensation().

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◆ updateOutputs()

void QFFmpeg::AudioRenderer::updateOutputs ( const Frame & frame )

protected

Definition at line 250 of file qffmpegaudiorenderer.cpp.

References freeOutput(), QAudioFormat::isValid(), and updateVolume().

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◆ updateSynchronization()

void QFFmpeg::AudioRenderer::updateSynchronization	(	const SynchronizationStamp &	stamp,
		const Frame &	frame )

protected

Definition at line 303 of file qffmpegaudiorenderer.cpp.

References QFFmpeg::AudioRenderer::BufferLoadingInfo::High, and QFFmpeg::AudioRenderer::BufferLoadingInfo::Moderate.

◆ updateVolume()

void QFFmpeg::AudioRenderer::updateVolume ( )

protected

Definition at line 90 of file qffmpegaudiorenderer.cpp.

Referenced by AudioRenderer(), and updateOutputs().

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

qtmultimedia/src/plugins/multimedia/ffmpeg/playbackengine/qffmpegaudiorenderer_p.h (7c2693ea642269c5b7a06b6161739649ba199237)
qtmultimedia/src/plugins/multimedia/ffmpeg/playbackengine/qffmpegaudiorenderer.cpp (250753a8bb66a684c008367291281f7e85d9e4ea)

Classes

Public Member Functions

Protected Types

Protected Member Functions

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ Microseconds

Constructor & Destructor Documentation

◆ AudioRenderer()

◆ ~AudioRenderer()

Member Function Documentation

◆ bufferLoadingTime()

◆ durationForBytes()

◆ freeOutput()

◆ initAudioFrameConverter()

◆ nextTimePoint()

◆ onAudioSinkStateChanged()

◆ onDeviceChanged()

◆ onPauseChanged()

◆ onPlaybackRateChanged()

◆ pushFrameToBufferOutput()

◆ pushFrameToOutput()

◆ renderInternal()

◆ setOutput() [1/2]

◆ setOutput() [2/2]

◆ setPitchCompensation()

◆ updateOutputs()

◆ updateSynchronization()

◆ updateVolume()