QAudioEncoderSettingsControl Class

The QAudioEncoderSettingsControl class provides access to the settings of a media service that performs audio encoding. 更多...

头: #include <QAudioEncoderSettingsControl>
qmake: QT += multimedia
继承: QMediaControl

该类已过时。 提供它是为使旧源代码能继续工作。强烈建议不要在新代码中使用它。

公共函数

virtual ~QAudioEncoderSettingsControl ()
virtual QAudioEncoderSettings audioSettings () const = 0
virtual QString codecDescription (const QString & codecName ) const = 0
virtual void setAudioSettings (const QAudioEncoderSettings & settings ) = 0
virtual QStringList supportedAudioCodecs () const = 0
virtual QList<int> supportedSampleRates (const QAudioEncoderSettings & settings , bool * continuous = nullptr) const = 0

保护函数

QAudioEncoderSettingsControl (QObject * parent = nullptr)

QAudioEncoderSettingsControl_iid

详细描述

QMediaService supports encoding audio data it will implement QAudioEncoderSettingsControl. This control provides information about the limits of restricted audio encoder options and allows the selection of a set of audio encoder settings as specified in a QAudioEncoderSettings 对象。

The functionality provided by this control is exposed to application code through the QMediaRecorder 类。

The interface name of QAudioEncoderSettingsControl is org.qt-project.qt.audioencodersettingscontrol/5.0 作为定义在 QAudioEncoderSettingsControl_iid .

另请参阅 QMediaService::requestControl () 和 QMediaRecorder .

成员函数文档编制

[protected] QAudioEncoderSettingsControl:: QAudioEncoderSettingsControl ( QObject * parent = nullptr)

Create a new audio encoder settings control object with the given parent .

[虚拟] QAudioEncoderSettingsControl:: ~QAudioEncoderSettingsControl ()

Destroys the audio encoder settings control.

[pure virtual] QAudioEncoderSettings QAudioEncoderSettingsControl:: audioSettings () const

Returns the audio encoder settings.

返回值可能异于传递给 QAudioEncoderSettingsControl::setAudioSettings () 若设定包含默认 (或未定义) 参数。在此情况下,若已解析未定义参数,应返回它们。

另请参阅 setAudioSettings ().

[pure virtual] QString QAudioEncoderSettingsControl:: codecDescription (const QString & codecName ) const

Returns the description of audio codec codecName .

[pure virtual] void QAudioEncoderSettingsControl:: setAudioSettings (const QAudioEncoderSettings & settings )

Sets the selected audio settings .

另请参阅 audioSettings ().

[pure virtual] QStringList QAudioEncoderSettingsControl:: supportedAudioCodecs () const

Returns the list of supported audio codec names.

[pure virtual] QList < int > QAudioEncoderSettingsControl:: supportedSampleRates (const QAudioEncoderSettings & settings , bool * continuous = nullptr) const

Returns the list of supported audio sample rates, if known.

If non null audio settings parameter is passed, the returned list is reduced to sample rates supported with partial settings applied.

It can be used for example to query the list of sample rates, supported by specific audio codec.

If the encoder supports arbitrary sample rates within the supported rates range, * continuous 被设为 true,否则 * continuous 被设为 false。

宏文档编制

QAudioEncoderSettingsControl_iid

org.qt-project.qt.audioencodersettingscontrol/5.0

定义接口名为 QAudioEncoderSettingsControl 类。