內容

• 公共函數
• 靜態公共成員
• 保護函數
• 宏
• 詳細描述

QVideoEncoderSettingsControl Class

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

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

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• 過時成員

公共函數

virtual	~QVideoEncoderSettingsControl ()
virtual void	setVideoSettings (const QVideoEncoderSettings & settings ) = 0
virtual QList<qreal>	supportedFrameRates (const QVideoEncoderSettings & settings , bool * continuous = nullptr) const = 0
virtual QList<QSize>	supportedResolutions (const QVideoEncoderSettings & settings , bool * continuous = nullptr) const = 0
virtual QStringList	supportedVideoCodecs () const = 0
virtual QString	videoCodecDescription (const QString & codec ) const = 0
virtual QVideoEncoderSettings	videoSettings () const = 0

• 31 公共函數繼承自 QObject

靜態公共成員

const QMetaObject

staticMetaObject

• 9 靜態公共成員繼承自 QObject

保護函數

QVideoEncoderSettingsControl (QObject * parent = nullptr)

• 9 保護函數繼承自 QObject

宏

QVideoEncoderSettingsControl_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

詳細描述

The QVideoEncoderSettingsControl class provides access to the settings of a media service that performs video encoding.

若 QMediaService supports encoding video data it will implement QVideoEncoderSettingsControl . This control provides information about the limits of restricted video encoder options and allows the selection of a set of video encoder settings as specified in a QVideoEncoderSettings 對象。

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

接口名稱對於 QVideoEncoderSettingsControl is org.qt-project.qt.videoencodersettingscontrol/5.0 作為定義在 QVideoEncoderSettingsControl_iid .

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

成員函數文檔編製

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

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

[虛擬] QVideoEncoderSettingsControl:: ~QVideoEncoderSettingsControl ()

Destroys a video encoder settings control.

[pure virtual] void QVideoEncoderSettingsControl:: setVideoSettings (const QVideoEncoderSettings & settings )

Sets the selected video encoder settings .

另請參閱 videoSettings ().

[pure virtual] QList < qreal > QVideoEncoderSettingsControl:: supportedFrameRates (const QVideoEncoderSettings & settings , bool * continuous = nullptr) const

Returns a list of supported frame rates.

If non null video settings parameter is passed, the returned list is reduced to frame rates supported with partial settings like video codec or video resolution applied.

If the encoder supports arbitrary frame rates within the supported range, * continuous 被設為 true，否則 * continuous 被設為 false。

另請參閱 QVideoEncoderSettings::frameRate ().

[pure virtual] QList < QSize > QVideoEncoderSettingsControl:: supportedResolutions (const QVideoEncoderSettings & settings , bool * continuous = nullptr) const

返迴支持的分辨率列錶。

If non null video settings parameter is passed, the returned list is reduced to resolution supported with partial settings like video codec or 幀速率 applied.

若編碼器支持所支持的分辨率範圍內的任意分辨率，* continuous 被設為 true，否則 * continuous 被設為 false。

另請參閱 QVideoEncoderSettings::resolution ().

[pure virtual] QStringList QVideoEncoderSettingsControl:: supportedVideoCodecs () const

Returns the list of supported video codecs.

[pure virtual] QString QVideoEncoderSettingsControl:: videoCodecDescription (const QString & codec ) const

Returns a description of a video codec .

[pure virtual] QVideoEncoderSettings QVideoEncoderSettingsControl:: videoSettings () const

Returns the video encoder settings.

返迴值可能異於傳遞給 QVideoEncoderSettingsControl::setVideoSettings () 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 setVideoSettings ().

宏文檔編製

QVideoEncoderSettingsControl_iid

org.qt-project.qt.videoencodersettingscontrol/5.0

定義接口名為 QVideoEncoderSettingsControl 類。