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QAudioRecorder Class

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

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

Properties

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.

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

foreach (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.

© The Qt Company Ltd
Licensed under the GNU Free Documentation License, Version 1.3.
https://doc.qt.io/qt-5.13/qaudiorecorder.html