內容

• 公共函數
• 保護函數
• 宏
• 詳細描述

QAudioEncoderSettingsControl Class

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

頭：	#include <QAudioEncoderSettingsControl>
qmake:	QT += multimedia
繼承：	QMediaControl

• 所有成員列錶，包括繼承成員

公共函數

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 公共函數繼承自 QObject

保護函數

QAudioEncoderSettingsControl (QObject * parent = Q_NULLPTR)

• 9 保護函數繼承自 QObject

宏

QAudioEncoderSettingsControl_iid

額外繼承成員

• 1 特性繼承自 QObject
• 1 公共槽繼承自 QObject
• 2 信號繼承自 QObject
• 11 靜態公共成員繼承自 QObject

詳細描述

The 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 對象。

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

接口名稱對於 QAudioEncoderSettingsControl is org.qt-project.qt.audioencodersettingscontrol/5.0 作為定義在 QAudioEncoderSettingsControl_iid .

另請參閱 QMediaService::requestControl () 和 QMediaRecorder .

成員函數文檔編製

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

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

[虛擬] QAudioEncoderSettingsControl:: ~QAudioEncoderSettingsControl ()

Destroys the audio encoder settings control.

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

Returns the audio encoder settings.

返迴值可能異於傳遞給 QAudioEncoderSettingsControl::setAudioSettings () 若設定包含默認 (或未定義) 參數。在此情況下，若已解析未定義參數，應返迴它們。

另請參閱 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 .

另請參閱 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 被設為 true，否則 * continuous 被設為 false。

宏文檔編製

QAudioEncoderSettingsControl_iid

org.qt-project.qt.audioencodersettingscontrol/5.0

定義接口名為 QAudioEncoderSettingsControl 類。