\qmltype AudioInput \instantiates QAudioInput More...

#include <qaudioinput.h>

Inheritance diagram for QAudioInput:

Collaboration diagram for QAudioInput:

Public Slots
void	setDevice (const QAudioDevice &device)

void	setVolume (float volume)

void	setMuted (bool muted)

Public Slots inherited from QObject
void	deleteLater ()
	\threadsafe

Signals
void	deviceChanged ()

void	volumeChanged (float volume)

void	mutedChanged (bool muted)

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.

Public Member Functions
	QAudioInput (QObject *parent=nullptr)

	QAudioInput (const QAudioDevice &deviceInfo, QObject *parent=nullptr)

	~QAudioInput ()

QAudioDevice	device () const

float	volume () const

bool	isMuted () 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`.

Properties
QAudioDevice	device
	\qmlproperty AudioDevice QtMultimedia::AudioInput::device

float	volume
	\qmlproperty real QtMultimedia::AudioInput::volume

bool	muted
	\qmlproperty bool QtMultimedia::AudioInput::muted

Properties inherited from QObject
QString	objectName
	the name of this object

Friends
class	QMediaCaptureSession

Additional Inherited Members
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 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)

Protected Attributes inherited from QObject
QScopedPointer< QObjectData >	d_ptr

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

\qmltype AudioInput \instantiates QAudioInput

An audio input to be used for capturing audio in a capture session.

\inqmlmodule QtMultimedia

\qml CaptureSession { id: playMusic audioInput: AudioInput { volume: slider.value } recorder: MediaRecorder { ... } } Slider { id: slider from: 0. to: 1. } \endqml

You can use AudioInput together with a QtMultiMedia::CaptureSession to capture audio from an audio input device.

See also: Camera, AudioOutput

Represents an input channel for audio. \inmodule QtMultimedia

This class represents an input channel that can be used together with QMediaCaptureSession. It enables the selection of the physical input device to be used, muting the channel, and changing the channel's volume.

Definition at line 18 of file qaudioinput.h.

Constructor & Destructor Documentation

◆ QAudioInput() [1/2]

QAudioInput::QAudioInput ( QObject * parent = nullptr )

explicit

Definition at line 55 of file qaudioinput.cpp.

◆ QAudioInput() [2/2]

QAudioInput::QAudioInput	(	const QAudioDevice &	deviceInfo,
		QObject *	parent = `nullptr`
	)

explicit

Definition at line 59 of file qaudioinput.cpp.

References QPlatformMediaIntegration::createAudioInput(), QMediaDevices::defaultAudioInput, device, QPlatformAudioInput::device, QAudioDevice::Input, QPlatformMediaIntegration::instance(), QAudioDevice::mode, qWarning, and QPlatformAudioInput::setAudioDevice().

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◆ ~QAudioInput()

QAudioInput::~QAudioInput ( )

Definition at line 73 of file qaudioinput.cpp.

Member Function Documentation

◆ device()

QAudioDevice QAudioInput::device ( ) const

Definition at line 161 of file qaudioinput.cpp.

References QPlatformAudioInput::device.

◆ deviceChanged

void QAudioInput::deviceChanged ( )

signal

Referenced by QWindowsMediaDeviceSession::setAudioInput(), AVFCameraService::setAudioInput(), QAndroidCaptureSession::setAudioInput(), QFFmpegMediaCaptureSession::setAudioInput(), and setDevice().

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◆ isMuted()

bool QAudioInput::isMuted ( ) const

Definition at line 126 of file qaudioinput.cpp.

References QPlatformAudioInput::muted.

◆ mutedChanged

void QAudioInput::mutedChanged ( bool muted )

signal

Referenced by QWindowsMediaDeviceSession::setAudioInput(), AVFCameraService::setAudioInput(), and setMuted().

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◆ setDevice

void QAudioInput::setDevice ( const QAudioDevice & device )

slot

Definition at line 166 of file qaudioinput.cpp.

References QMediaDevices::defaultAudioInput, device, QPlatformAudioInput::device, deviceChanged(), emit, QAudioDevice::Input, and QPlatformAudioInput::setAudioDevice().

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◆ setMuted

void QAudioInput::setMuted ( bool muted )

slot

Definition at line 131 of file qaudioinput.cpp.

References emit, muted, QPlatformAudioInput::muted, mutedChanged(), and QPlatformAudioInput::setMuted().

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◆ setVolume

void QAudioInput::setVolume ( float volume )

slot

Definition at line 102 of file qaudioinput.cpp.

References emit, qBound(), QPlatformAudioInput::setVolume(), volume, QPlatformAudioInput::volume, and volumeChanged().

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◆ volume()

float QAudioInput::volume ( ) const

Definition at line 97 of file qaudioinput.cpp.

References QPlatformAudioInput::volume.

◆ volumeChanged

void QAudioInput::volumeChanged ( float volume )

signal

Referenced by QWindowsMediaDeviceSession::setAudioInput(), AVFCameraService::setAudioInput(), and setVolume().

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Friends And Related Symbol Documentation

◆ QMediaCaptureSession

friend class QMediaCaptureSession

friend

Definition at line 47 of file qaudioinput.h.

Property Documentation

◆ device

QAudioInput::device

readwrite

\qmlproperty AudioDevice QtMultimedia::AudioInput::device

This property describes the audio device connected to this input.

The device property represents the audio device this input is connected to. This property can be used to select an output device from the QtMultimedia::MediaDevices::audioInputs() list.

The audio device connected to this input.

The device property represents the audio device connected to this input. This property can be used to select an input device from the QMediaDevices::audioInputs() list.

You can select the system default audio input by setting this property to a default constructed QAudioDevice object.

Definition at line 52 of file qaudioinput.h.

Referenced by QAudioInput(), QWindowsMediaDeviceSession::setActive(), and setDevice().

◆ muted

QAudioInput::muted

readwrite

\qmlproperty bool QtMultimedia::AudioInput::muted

This property holds whether the audio input is muted.

Defaults to {false}.

The muted state of the current media.

The value will be true if the input is muted; otherwise false.

Definition at line 52 of file qaudioinput.h.

Referenced by setMuted().

◆ volume

QAudioInput::volume

readwrite

\qmlproperty real QtMultimedia::AudioInput::volume

The volume is scaled linearly, ranging from 0 (silence) to 1 (full volume).

Note: values outside this range will be clamped.

By default the volume is 1.

UI volume controls should usually be scaled non-linearly. For example, using a logarithmic scale will produce linear changes in perceived loudness, which is what a user would normally expect from a volume control.

See also: QAudio::convertVolume()

The property returns the volume of the audio input.

Definition at line 52 of file qaudioinput.h.

Referenced by setVolume().

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

qtmultimedia/src/multimedia/audio/qaudioinput.h
qtmultimedia/src/multimedia/audio/qaudioinput.cpp

Public Slots

Signals

Public Member Functions

Properties

Friends

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ QAudioInput() [1/2]

◆ QAudioInput() [2/2]

◆ ~QAudioInput()

Member Function Documentation

◆ device()

◆ deviceChanged

◆ isMuted()

◆ mutedChanged

◆ setDevice

◆ setMuted

◆ setVolume

◆ volume()

◆ volumeChanged

Friends And Related Symbol Documentation

◆ QMediaCaptureSession

Property Documentation

◆ device

◆ muted

◆ volume