QVideoSink Class
The QVideoSink class represents a generic sink for video data. More...
| Header: | #include <QVideoSink> |
| CMake: | find_package(Qt6 REQUIRED COMPONENTS Multimedia) target_link_libraries(mytarget PRIVATE Qt6::Multimedia) |
| qmake: | QT += multimedia |
| Inherits: | QObject |
Properties
- subtitleText : QString
- videoSize : const QSize
Public Functions
| QVideoSink(QObject *parent = nullptr) | |
| virtual | ~QVideoSink() |
| QRhi * | rhi() const |
| void | setSubtitleText(const QString &subtitle) |
| void | setVideoFrame(const QVideoFrame &frame) |
| QString | subtitleText() const |
| QVideoFrame | videoFrame() const |
| QSize | videoSize() const |
Signals
| void | subtitleTextChanged(const QString &subtitleText) const |
| void | videoFrameChanged(const QVideoFrame &frame) const |
| void | videoSizeChanged() |
Detailed Description
The QVideoSink class can be used to retrieve video data on a frame by frame basis from Qt Multimedia.
QVideoSink will provide individual video frames to the application developer through the videoFrameChanged() signal.
The video frame can then be used to read out the data of those frames and handle them further. When using QPainter, the QVideoFrame can be drawing using the paint() method in QVideoSink.
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.
See also QMediaPlayer and QMediaCaptureSession.
Property Documentation
subtitleText : QString
Returns the current subtitle text.
Access functions:
| QString | subtitleText() const |
| void | setSubtitleText(const QString &subtitle) |
Notifier signal:
| 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.
Access functions:
| QSize | videoSize() const |
Notifier signal:
| void | videoSizeChanged() |
Member Function Documentation
QVideoSink::QVideoSink(QObject *parent = nullptr)
Constructs a new QVideoSink object with parent.
[virtual noexcept] QVideoSink::~QVideoSink()
Destroys the object.
QRhi *QVideoSink::rhi() const
Returns the QRhi instance being used to create texture data in the video frames.
void QVideoSink::setSubtitleText(const QString &subtitle)
Sets the current subtitle text.
Note: Setter function for property subtitleText.
See also subtitleText().
void QVideoSink::setVideoFrame(const QVideoFrame &frame)
Sets the current video frame.
See also videoFrame().
QVideoFrame QVideoSink::videoFrame() const
Returns the current video frame.
See also setVideoFrame().
[signal] void QVideoSink::videoFrameChanged(const QVideoFrame &frame) const
Signals when the video frame changes.
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