QAudioRecorder Class

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

Header:	#include <QAudioRecorder>
qmake:	QT += multimedia
Inherits:	QMediaRecorder

List of all members, including inherited members

Properties

audioInput : QString

Public Functions

	QAudioRecorder(QObject *parent = nullptr)
virtual	~QAudioRecorder()
QString	audioInput() const
QString	audioInputDescription(const QString &name) const
QStringList	audioInputs() const
QString	defaultAudioInput() const

Public Slots

void	setAudioInput(const QString &name)

Signals

void	audioInputChanged(const QString &name)
void	availableAudioInputsChanged()

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.

 const QStringList inputs = audioRecorder->audioInputs();
 QString selectedInput = audioRecorder->defaultAudioInput();

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

 audioRecorder->setAudioInput(selectedInput);

The Audio Recorder Example shows how to use this class in more detail.

See also QMediaRecorder and QAudioInputSelectorControl.

Property Documentation

audioInput : QString

This property holds the active audio input name.

Access functions:

QString	audioInput() const
void	setAudioInput(const QString &name)

Notifier signal:

void	audioInputChanged(const QString &name)

Member Function Documentation

QAudioRecorder::QAudioRecorder(QObject **parent* = nullptr)

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

`[signal]` void QAudioRecorder::audioInputChanged(const QString &name)

Signal emitted when active audio input changes to name.

Note: Notifier signal for property audioInput.

`[signal]` void QAudioRecorder::availableAudioInputsChanged()

Signal is emitted when the available audio inputs change.

`[slot]` void QAudioRecorder::setAudioInput(const QString &name)

Set the active audio input to name.

Note: Setter function for property audioInput.

See also audioInput().

`[virtual]` QAudioRecorder::~QAudioRecorder()

Destroys an audio recorder object.

QString QAudioRecorder::audioInput() const

Returns the active audio input name.

Note: Getter function for property audioInput.

See also setAudioInput().

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

QString QAudioRecorder::defaultAudioInput() const

Returns the default audio input name.

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