内容

• 公共函数
• 保护函数
• 宏
• 详细描述

QAudioEncoderSettingsControl Class

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

• 所有成员列表，包括继承成员

公共函数

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

• 32 公共函数继承自 QObject

保护函数

QAudioEncoderSettingsControl (QObject * parent = Q_NULLPTR)

• 9 保护函数继承自 QObject

宏

QAudioEncoderSettingsControl_iid

额外继承成员

• 1 特性继承自 QObject
• 1 公共槽继承自 QObject
• 2 信号继承自 QObject
• 11 静态公共成员继承自 QObject

详细描述

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

若 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。

接口名称对于 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 = Q_NULLPTR)

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

[virtual] QAudioEncoderSettingsControl:: ~QAudioEncoderSettingsControl ()

Destroys the audio encoder settings control.

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

Returns the audio encoder settings.

The returned value may be different tha passed to QAudioEncoderSettingsControl::setAudioSettings () if the settings contains the default or undefined parameters. In this case if the undefined parameters are already resolved, they should be returned.

另请参阅 setAudioSettings ().

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

Returns description of audio codec .

[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 = Q_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 is set to true, otherwise * 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。