QVideoSink 類

QVideoSink 類錶示視頻數據的一般匯點。更多...

頭：	`#include <QVideoSink>`
CMake:	`find_package(Qt6 REQUIRED COMPONENTS Multimedia)` `target_link_libraries(mytarget PRIVATE Qt6::Multimedia)`
qmake:	`QT += multimedia`
繼承：	QObject

所有成員列錶，包括繼承成員

特性

subtitleText : QString
videoSize : const QSize

公共函數

	QVideoSink (QObject * parent = nullptr)
virtual	~QVideoSink () override
QRhi *	rhi () const
void	setSubtitleText (const QString & subtitle )
void	setVideoFrame (const QVideoFrame & frame )
QString	subtitleText () const
QVideoFrame	videoFrame () const
QSize	videoSize () const

信號

void	subtitleTextChanged (const QString & subtitleText ) const
void	videoFrameChanged (const QVideoFrame & frame ) const
void	videoSizeChanged ()

詳細描述

QVideoSink 類可以用於從 Qt Multimedia 逐幀檢索視頻數據。

QVideoSink will provide individual video frames to the application developer through the videoFrameChanged () 信號。

The video frame can then be used to read out the data of those frames and handle them further. When using QPainter ， QVideoFrame can be drawing using the paint () 方法。

QVideoFrame objects can consume a significant amount of memory or system resources and should thus not be held for longer than required by the application.

另請參閱 QMediaPlayer and QMediaCaptureSession .

特性文檔編製

subtitleText : QString

返迴當前字幕文本。

訪問函數：

QString	subtitleText () const
void	setSubtitleText (const QString & subtitle )

通知程序信號：

void	subtitleTextChanged (const QString & subtitleText ) const

`[read-only]` videoSize : const QSize

Returns the size of the video currently being played back. If no video is being played, this method returns an invalid size.

訪問函數：

QSize videoSize () const

通知程序信號：

void	videoSizeChanged ()

成員函數文檔編製

QVideoSink:: QVideoSink ( QObject * parent = nullptr)

構造新的 QVideoSink 對象采用 parent .

`[override virtual noexcept]` QVideoSink:: ~QVideoSink ()

銷毀對象。

QRhi *QVideoSink:: rhi () const

返迴 QRhi instance being used to create texture data in the video frames.

void QVideoSink:: setSubtitleText (const QString & subtitle )

設置當前 subtitle 文本。

注意： setter 函數對於特性 subtitleText .

另請參閱 subtitleText ().

void QVideoSink:: setVideoFrame (const QVideoFrame & frame )

設置當前視頻 frame .

另請參閱 videoFrame ().

QVideoFrame QVideoSink:: videoFrame () const

返迴當前視頻幀。

另請參閱 setVideoFrame ().

`[signal]` void QVideoSink:: videoFrameChanged (const QVideoFrame & frame ) const

Signals when the video frame 改變。