#include <qffmpegaudiorenderer_p.h>

Inheritance diagram for QFFmpeg::AudioRenderer:

Collaboration diagram for QFFmpeg::AudioRenderer:

Public Member Functions
	AudioRenderer (const TimeController &tc, QAudioOutput *output)

void	setOutput (QAudioOutput *output)

	~AudioRenderer () override

Public Member Functions inherited from QFFmpeg::Renderer
	Renderer (const TimeController &tc, const std::chrono::microseconds &seekPosTimeOffset={})

void	syncSoft (TimePoint tp, qint64 trackPos)

qint64	seekPosition () const

qint64	lastPosition () const

void	setPlaybackRate (float rate)

void	doForceStep ()

bool	isStepForced () const

Public Member Functions inherited from QFFmpeg::PlaybackEngineObject
	PlaybackEngineObject ()

bool	isPaused () const

bool	isAtEnd () const

void	kill ()

void	setPaused (bool isPaused)

Id	id () 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	event (QEvent *event)
	This virtual function receives events to an object and should return true if the event e was recognized and processed.

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	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.

void	moveToThread (QThread *thread)
	Changes the thread affinity for this object and its children.

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::milliseconds time, Qt::TimerType timerType=Qt::CoarseTimer)

void	killTimer (int id)
	Kills the timer with timer identifier, id.

template<typename T >
T	findChild (const QString &aName=QString(), 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 (const QString &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 >
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 Member Functions
RenderingResult	renderInternal (Frame frame) override

void	onPlaybackRateChanged () override

void	freeOutput ()

void	updateOutput (const Codec *codec)

void	initResempler (const Codec *codec)

void	onDeviceChanged ()

void	updateVolume ()

void	updateSynchronization (const Frame &currentFrame)

std::chrono::microseconds	currentBufferLoadingTime () const

Protected Member Functions inherited from QFFmpeg::Renderer
bool	setForceStepDone ()

void	onPauseChanged () override

bool	canDoNextStep () const override

virtual void	onPlaybackRateChanged ()

virtual RenderingResult	renderInternal (Frame frame)=0

float	playbackRate () const

std::chrono::microseconds	frameDelay (const Frame &frame) 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
QTimer &	timer ()

void	scheduleNextStep (bool allowDoImmediatelly=true)

virtual void	onPauseChanged ()

virtual bool	canDoNextStep () const

virtual int	timerInterval () const

void	setAtEnd (bool isAtEnd)

virtual void	doNextStep ()

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 = TimeController::TimePoint

using	Clock = TimeController::Clock

Public Types inherited from QFFmpeg::PlaybackEngineObject
using	TimePoint = std::chrono::steady_clock::time_point

using	TimePointOpt = std::optional< TimePoint >

using	Id = quint64

Public Slots inherited from QFFmpeg::Renderer
void	onFinalFrameReceived ()

void	render (Frame)

Public Slots inherited from QObject
void	deleteLater ()
	\threadsafe

Signals inherited from QFFmpeg::Renderer
void	frameProcessed (Frame)

void	synchronized (Id id, TimePoint tp, qint64 pos)

void	forceStepDone ()

void	loopChanged (Id id, qint64 offset, int index)

Signals inherited from QFFmpeg::PlaybackEngineObject
void	atEnd ()

void	error (int code, 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.

Constructor & Destructor Documentation

◆ AudioRenderer()

QFFmpeg::AudioRenderer::AudioRenderer	(	const TimeController &	tc,
		QAudioOutput *	output
	)

Definition at line 33 of file qffmpegaudiorenderer.cpp.

References QObject::connect(), QAudioOutput::deviceChanged(), QAudioOutput::mutedChanged(), onDeviceChanged(), output, updateVolume(), and QAudioOutput::volumeChanged().

Here is the call graph for this function:

◆ ~AudioRenderer()

QFFmpeg::AudioRenderer::~AudioRenderer ( )

override

Definition at line 49 of file qffmpegaudiorenderer.cpp.

References freeOutput().

Here is the call graph for this function:

Member Function Documentation

◆ currentBufferLoadingTime()

std::chrono::microseconds QFFmpeg::AudioRenderer::currentBufferLoadingTime ( ) const

protected

Definition at line 252 of file qffmpegaudiorenderer.cpp.

References Q_ASSERT, and qMax().

Referenced by updateSynchronization().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ freeOutput()

void QFFmpeg::AudioRenderer::freeOutput ( )

protected

Definition at line 136 of file qffmpegaudiorenderer.cpp.

References qCDebug.

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

Here is the caller graph for this function:

◆ initResempler()

void QFFmpeg::AudioRenderer::initResempler ( const Codec * codec )

protected

Definition at line 109 of file qffmpegaudiorenderer.cpp.

References codec, QFFmpeg::Renderer::playbackRate(), qRound(), QAudioFormat::sampleRate(), and QAudioFormat::setSampleRate().

Referenced by updateOutput().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ onDeviceChanged()

void QFFmpeg::AudioRenderer::onDeviceChanged ( )

protected

Definition at line 60 of file qffmpegaudiorenderer.cpp.

Referenced by AudioRenderer(), and setOutput().

Here is the caller graph for this function:

◆ onPlaybackRateChanged()

void QFFmpeg::AudioRenderer::onPlaybackRateChanged ( )

overrideprotectedvirtual

Reimplemented from QFFmpeg::Renderer.

Definition at line 104 of file qffmpegaudiorenderer.cpp.

◆ renderInternal()

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

overrideprotectedvirtual

Implements QFFmpeg::Renderer.

Definition at line 65 of file qffmpegaudiorenderer.cpp.

References QAudioBuffer::byteCount(), QAudioBuffer::constData(), QAudioFormat::durationForBytes(), frame, QAudioBuffer::isValid(), updateOutput(), updateSynchronization(), and QIODevice::write().

Here is the call graph for this function:

◆ setOutput()

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

Definition at line 44 of file qffmpegaudiorenderer.cpp.

References onDeviceChanged(), output, and QFFmpeg::Renderer::setOutputInternal().

Here is the call graph for this function:

◆ updateOutput()

void QFFmpeg::AudioRenderer::updateOutput ( const Codec * codec )

protected

Definition at line 153 of file qffmpegaudiorenderer.cpp.

References QFFmpegMediaFormatInfo::audioFormatFromCodecParameters(), QAudioFormat::bytesForDuration(), QAudioDevice::channelConfiguration(), codec, QAudioOutput::device, freeOutput(), initResempler(), QAudioFormat::isValid(), QAudioFormat::setChannelConfig(), and updateVolume().

Referenced by renderInternal().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ updateSynchronization()

void QFFmpeg::AudioRenderer::updateSynchronization ( const Frame & currentFrame )

protected

Definition at line 184 of file qffmpegaudiorenderer.cpp.

References QFFmpeg::Renderer::changeRendererTime(), currentBufferLoadingTime(), QFFmpeg::Renderer::frameDelay(), QFFmpeg::Frame::isValid(), Q_ASSERT, qCDebug, qDebug, and QAudioFormat::sampleRate().

Referenced by renderInternal().

Here is the call graph for this function:

Here is the caller graph for this function:

◆ updateVolume()

void QFFmpeg::AudioRenderer::updateVolume ( )

protected

Definition at line 54 of file qffmpegaudiorenderer.cpp.

References QAudioOutput::isMuted(), and QAudioOutput::volume.

Referenced by AudioRenderer(), and updateOutput().

Here is the call graph for this function:

Here is the caller graph for this function:

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

qtmultimedia/src/plugins/multimedia/ffmpeg/playbackengine/qffmpegaudiorenderer_p.h
qtmultimedia/src/plugins/multimedia/ffmpeg/playbackengine/qffmpegaudiorenderer.cpp

Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ AudioRenderer()

◆ ~AudioRenderer()

Member Function Documentation

◆ currentBufferLoadingTime()

◆ freeOutput()

◆ initResempler()

◆ onDeviceChanged()

◆ onPlaybackRateChanged()

◆ renderInternal()

◆ setOutput()

◆ updateOutput()

◆ updateSynchronization()

◆ updateVolume()