The QAudioRecorder class is used for the recording of audio. More...

Inheritance diagram for QAudioRecorder:

Public Signals
void	audioInputChanged (const QString &name)

void	availableAudioInputsChanged ()

Public Signals inherited from QMediaRecorder
void	actualLocationChanged (const QUrl &location)

void	availabilityChanged (bool available)

void	availabilityChanged (QMultimedia::AvailabilityStatus availability)

void	durationChanged (qint64 duration)

void	error (QMediaRecorder::Error error)

void	metaDataAvailableChanged (bool available)

void	metaDataChanged ()

void	metaDataChanged (const QString &key, const QVariant &value)

void	metaDataWritableChanged (bool writable)

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
void	setAudioInput (const QString &name)

Public Slots inherited from QMediaRecorder
void	pause ()

void	record ()

void	setMuted (bool muted)

void	setVolume (qreal volume)

void	stop ()

Public Slots inherited from QObject
void	deleteLater ()

Public Methods
	QAudioRecorder (QObject *parent=nullptr)

	~QAudioRecorder ()

QString	audioInput () const

QString	audioInputDescription (const QString &name) const

QStringList	audioInputs () const

QString	defaultAudioInput () const

Public Methods inherited from QMediaRecorder
	QMediaRecorder (QMediaObject mediaObject, QObject parent=nullptr)

	~QMediaRecorder ()

QUrl	actualLocation () const

QString	audioCodecDescription (const QString &codecName) const

QAudioEncoderSettings	audioSettings () const

QMultimedia::AvailabilityStatus	availability () const

QStringList	availableMetaData () const

QString	containerDescription (const QString &format) const

QString	containerFormat () const

qint64	duration () const

Error	error () const

QString	errorString () const

bool	isAvailable () const

bool	isMetaDataAvailable () const

bool	isMetaDataWritable () const

bool	isMuted () const

QMediaObject *	mediaObject () const override

QVariant	metaData (const QString &key) const

QUrl	outputLocation () const

void	setAudioSettings (const QAudioEncoderSettings &audioSettings)

void	setContainerFormat (const QString &format)

void	setEncodingSettings (const QAudioEncoderSettings &audioSettings, const QVideoEncoderSettings &videoSettings=QVideoEncoderSettings (), const QString &mimeType=QString ())

void	setMetaData (const QString &key, const QVariant &value)

bool	setOutputLocation (const QUrl &location)

void	setVideoSettings (const QVideoEncoderSettings &videoSettings)

State	state () const

Status	status () const

QStringList	supportedAudioCodecs () const

QList< int >	supportedAudioSampleRates (const QAudioEncoderSettings &settings=QAudioEncoderSettings (), bool *continuous=nullptr) const

QStringList	supportedContainers () const

QList< qreal >	supportedFrameRates (const QVideoEncoderSettings &settings=QVideoEncoderSettings (), bool *continuous=nullptr) const

QList< QSize >	supportedResolutions (const QVideoEncoderSettings &settings=QVideoEncoderSettings (), bool *continuous=nullptr) const

QStringList	supportedVideoCodecs () const

QString	videoCodecDescription (const QString &codecName) const

QVideoEncoderSettings	videoSettings () const

qreal	volume () const

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

Public Methods inherited from QMediaBindableInterface
virtual	~QMediaBindableInterface ()

Properties
	audioInput
	Active audio input name. More...

Properties inherited from QMediaRecorder
	actualLocation
	Actual location of the last media content. More...

	duration
	Recorded media duration in milliseconds. More...

	metaDataAvailable
	Whether access to a media object's metadata is available. More...

	metaDataWritable
	Whether a media object's metadata is writable. More...

	muted
	Whether a recording audio stream is muted. More...

	outputLocation
	the destination location of media content. More...

	state
	Current state of the media recorder. More...

	status
	Current status of the media recorder. More...

	volume
	Linear audio gain of media recorder. More...

Properties inherited from QObject
	objectName

Additional Inherited Members
Public Types inherited from QMediaRecorder
enum	Error

enum	State

enum	Status

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 >())

Protected Methods inherited from QMediaRecorder
bool	setMediaObject (QMediaObject *object) override

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)

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

	QObjectList

Detailed Description

The QAudioRecorder class is a high level media recording class and contains the same functionality as QMediaRecorder.

audioRecorder = new QAudioRecorder;
 
QAudioEncoderSettings audioSettings;
audioSettings.setCodec("audio/amr");
audioSettings.setQuality(QMultimedia::HighQuality);
 
audioRecorder->setEncodingSettings(audioSettings);
 
audioRecorder->setOutputLocation(QUrl::fromLocalFile("test.amr"));
audioRecorder->record();

In addition QAudioRecorder provides functionality for selecting the audio input.

QStringList inputs = audioRecorder->audioInputs();
QString selectedInput = audioRecorder->defaultAudioInput();
 
for (QString input : inputs) {
   QString description = audioRecorder->audioInputDescription(input);
 
   // show descriptions to user and allow selection
   selectedInput = input;
}
 
audioRecorder->setAudioInput(selectedInput);

See also: QMediaRecorder, QAudioInputSelectorControl

Constructor & Destructor Documentation

QAudioRecorder::QAudioRecorder ( QObject * parent = nullptr )

explicit

Constructs an audio recorder. The parent is passed to QMediaObject.

QAudioRecorder::~QAudioRecorder ( )

Destroys an audio recorder object.

Method Documentation

QString QAudioRecorder::audioInput ( ) const

Returns the active audio input name.

void QAudioRecorder::audioInputChanged ( const QString & name )

signal

Signal emitted when active audio input changes to name.

QString QAudioRecorder::audioInputDescription ( const QString & name ) const

Returns the readable translated description of the audio input device with name.

QStringList QAudioRecorder::audioInputs ( ) const

Returns a list of available audio inputs

void QAudioRecorder::availableAudioInputsChanged ( )

signal

Signal is emitted when the available audio inputs change.

QString QAudioRecorder::defaultAudioInput ( ) const

Returns the default audio input name.

void QAudioRecorder::setAudioInput ( const QString & name )

slot

Set the active audio input to name.

Property Documentation

QAudioRecorder::audioInput

This property stores the aactive audio input name.

Properties	Class Methods
read	audioInput
write	setAudioInput
notify	audioInputChanged

Public Signals

Public Slots

Public Methods

Properties

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Method Documentation

Property Documentation