Provides access to the recording functionality of a QMediaService. More...

Inheritance diagram for QMediaRecorderControl:

Public Signals
void	actualLocationChanged (const QUrl &location)

void	durationChanged (qint64 duration)

void	error (int error, const QString &errorString)

void	mutedChanged (bool muted)

void	stateChanged (QMediaRecorder::State state)

void	statusChanged (QMediaRecorder::Status status)

void	volumeChanged (qreal volume)

Public Signals inherited from QObject
void	destroyed (QObject *obj=nullptr)

void	objectNameChanged (const QString &objectName)

Public Slots
virtual void	setMuted (bool muted)

virtual void	setState (QMediaRecorder::State state)

virtual void	setVolume (qreal volume)

Public Slots inherited from QObject
void	deleteLater ()

Public Methods
virtual	~QMediaRecorderControl ()

virtual void	applySettings () = 0

virtual qint64	duration () const = 0

virtual bool	isMuted () const = 0

virtual QUrl	outputLocation () const = 0

virtual bool	setOutputLocation (const QUrl &location) = 0

virtual QMediaRecorder::State	state () const = 0

virtual QMediaRecorder::Status	status () const = 0

virtual qreal	volume () const = 0

Public Methods inherited from QMediaControl
	~QMediaControl ()

Public Methods inherited from QObject
	QObject (QObject *parent=nullptr)

	~QObject ()

bool	blockSignals (bool block)

const QList< QObject * > &	children () const

bool	connect (const QObject *sender, const QString &signalMethod, const QString &location, const QString &slotMethod, Qt::ConnectionType type=Qt::AutoConnection)

bool	connect (const QObject *sender, const QString &signalMethod, const QString &slotMethod, Qt::ConnectionType type=Qt::AutoConnection)

bool	disconnect (const QObject *receiver, const QString &slotMethod=QString ()) const

bool	disconnect (const QString &signalMethod, const QString &location, const QObject *receiver=nullptr, const QString &slotMethod=QString ()) const

bool	disconnect (const QString &signalMethod=QString (), const QObject *receiver=nullptr, const QString &slotMethod=QString ()) const

void	dumpObjectInfo ()

void	dumpObjectTree ()

QList< QString >	dynamicPropertyNames () const

virtual bool	event (QEvent *event)

virtual bool	eventFilter (QObject watched, QEvent event)

template<typename T >
T	findChild (const QString &childName=QString ()) const

template<class T >
QList< T >	findChildren (const QRegularExpression &regExp, Qt::FindChildOptions options=Qt::FindChildrenRecursively) const

template<class T >
QList< T >	findChildren (const QString &childName=QString (), Qt::FindChildOptions options=Qt::FindChildrenRecursively) const

bool	inherits (const QString &className) const

void	installEventFilter (QObject *filterObj)

bool	isWidgetType () const

bool	isWindowType () const

void	killTimer (int id)

const QMetaObject *	metaObject () const

void	moveToThread (QThread *targetThread)

QString	objectName () const

QObject *	parent () const

template<class T = QVariant>
T	property (const QString &name) const

void	removeEventFilter (QObject *obj)

void	setObjectName (const QString &name)

void	setParent (QObject *parent)

bool	setProperty (const QString &name, const QVariant &value)

bool	signalsBlocked () const

int	startTimer (int interval, Qt::TimerType timerType=Qt::CoarseTimer)

QThread *	thread () const

Protected Methods
	QMediaRecorderControl (QObject *parent=nullptr)

Protected Methods inherited from QMediaControl
	QMediaControl (QObject *parent=nullptr)

Protected Methods inherited from QObject
virtual void	childEvent (QChildEvent *event)

virtual void	connectNotify (const QMetaMethod &signalMethod) const

virtual void	customEvent (QEvent *event)

virtual void	disconnectNotify (const QMetaMethod &signalMethod) const

bool	isSignalConnected (const QMetaMethod &signalMethod) const

int	receivers (const QString &signal) const

QObject *	sender () const

int	senderSignalIndex () const

virtual void	timerEvent (QTimerEvent *event)

Additional Inherited Members
Static Public Methods inherited from QObject
static bool	connect (const QObject sender, const QMetaMethod &signalMethod, const QObject receiver, const QMetaMethod &slotMethod, Qt::ConnectionType type=Qt::AutoConnection)

static bool	connect (const QObject sender, const QString &signalMethod, const QObject receiver, const QString &slotMethod, Qt::ConnectionType type=Qt::AutoConnection, const QString &location=QString ())

static bool	connect (const QObject sender, const QString &signalMethod, const QString &location, const QObject receiver, const QString &slotMethod, Qt::ConnectionType type=Qt::AutoConnection)

template<class Sender , class SignalClass , class... SignalArgs, class Receiver , class SlotClass , class... SlotArgs, class SlotReturn >
static bool	connect (const Sender sender, void (SignalClass::signalMethod)(SignalArgs...), const Receiver receiver, SlotReturn (SlotClass::slotMethod)(SlotArgs...), Qt::ConnectionType type=Qt::AutoConnection)

template<class Sender , class SignalClass , class... SignalArgs, class Receiver , class T >
static bool	connect (const Sender sender, void (SignalClass::signalMethod)(SignalArgs...), const Receiver *receiver, T slotLambda, Qt::ConnectionType type=Qt::AutoConnection)

static bool	disconnect (const QObject sender, const QMetaMethod &signalMethod, const QObject receiver, const QMetaMethod &slotMethod)

static bool	disconnect (const QObject sender, const QString &signalMethod, const QObject receiver, const QString &slotMethod)

static bool	disconnect (const QObject sender, const QString &signalMethod, const QString &location, const QObject receiver, const QString &slotMethod)

static bool	disconnect (const QObject sender, std::nullptr_t, const QObject receiver, std::nullptr_t)

template<class Sender , class SignalClass , class... SignalArgs, class Receiver , class SlotClass , class... SlotArgs, class SlotReturn >
static bool	disconnect (const Sender sender, void (SignalClass::signalMethod)(SignalArgs...), const Receiver receiver, SlotReturn (SlotClass::slotMethod)(SlotArgs...))

template<class Sender , class SignalClass , class... SignalArgs, class Receiver >
static bool	disconnect (const Sender sender, void (SignalClass::signalMethod)(SignalArgs...), const Receiver *receiver, std::nullptr_t slotMethod=nullptr)

template<class Sender , class SignalClass , class... SignalArgs, class Receiver , class T >
static bool	disconnect (const Sender sender, void (SignalClass::signalMethod)(SignalArgs...), const Receiver *receiver, T slotMethod)

static QMetaObject &	staticMetaObject ()

static QString	tr (const char text, const char comment=nullptr, std::optional< int > numArg=std::optional< int >())

Properties inherited from QObject
	objectName

Related Functions inherited from QObject
T	qobject_cast (QObject *object)

	QObjectList

Detailed Description

Generally you will use the QMediaRecorder class in application code - this class is mostly used when implementing a new QMediaService or if there is access to specific low level functionality not otherwise present in QMediaRecorder.

If a QMediaService can record media it will implement QMediaRecorderControl. This control provides a means to set the outputLocation(), and record, pause and stop recording via the setState() method. It also provides feedback on the duration() of the recording.

The interface name of QMediaRecorderControl is "com.copperspice.CS.mediaRecorderControl/1.0" as defined in QMediaRecorderControl_iid.

See also: QMediaService::requestControl(), QMediaRecorder

Constructor & Destructor Documentation

QMediaRecorderControl::~QMediaRecorderControl ( )

virtual

Destroys a media recorder control.

QMediaRecorderControl::QMediaRecorderControl ( QObject * parent = nullptr )

explicitprotected

Constructs a media recorder control with the given parent.

Method Documentation

void QMediaRecorderControl::actualLocationChanged ( const QUrl & location )

signal

Signals the actual media location has changed. This signal should be emitted at start of recording.

void QMediaRecorderControl::applySettings ( )

pure virtual

Commits the encoder settings and performs pre-initialization to reduce delays when recording is started.

qint64 QMediaRecorderControl::duration ( ) const

pure virtual

Return the current duration in milliseconds.

void QMediaRecorderControl::durationChanged ( qint64 duration )

signal

Signals that the duration of the recorded media has changed. This only emitted when there is a discontinuous change in the duration such as being reset to 0.

void QMediaRecorderControl::error	(	int	error,
		const QString &	errorString
	)

signal

Signals that an error has occurred. The errorString describes the error.

bool QMediaRecorderControl::isMuted ( ) const

pure virtual

Returns true if the recorder is muted and false if it is not.

void QMediaRecorderControl::mutedChanged ( bool muted )

signal

Signals that the muted state of a media recorder has changed.

QUrl QMediaRecorderControl::outputLocation ( ) const

pure virtual

Returns the current output location being used.

void QMediaRecorderControl::setMuted ( bool muted )

slot

Sets the muted state of a media recorder.

bool QMediaRecorderControl::setOutputLocation ( const QUrl & location )

pure virtual

Sets the output location and returns true if this operation is successful. If a file at the output location already exists it will be overwritten. If the location is relative or empty, the service should use the system specific place and file naming scheme.

After recording has started the backend should report the actual file location by emitting the actualLocationChanged() signal.

void QMediaRecorderControl::setState ( QMediaRecorder::State state )

slot

Set the media recorder to the given state.

void QMediaRecorderControl::setVolume ( qreal volume )

slot

Sets the linear audio volume of a media recorder.

QMediaRecorder::State QMediaRecorderControl::state ( ) const

pure virtual

Return the current recording state.

void QMediaRecorderControl::stateChanged ( QMediaRecorder::State state )

signal

Signals that the state of a media recorder has changed.

QMediaRecorder::Status QMediaRecorderControl::status ( ) const

pure virtual

Return the current recording status.

void QMediaRecorderControl::statusChanged ( QMediaRecorder::Status status )

signal

Signals that the status of a media recorder has changed.

qreal QMediaRecorderControl::volume ( ) const

pure virtual

Returns the linear audio gain of media recorder.

void QMediaRecorderControl::volumeChanged ( qreal volume )

signal

Signals the audio volume value has changed.

Public Signals

Public Slots

Public Methods

Protected Methods

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Method Documentation