Documentation for GLVideoItem for GStreamer 1.16.1

I'm integrating a (pure) RTP stream into a Qt 5.15.2 Application using GStreamer 1.16.1. Within QML there is "import org.freedesktop.gstreamer.GLVideoItem 1.0" and "GstGLVideoItem" as suggested by the GStreamer play-sample https://github.com/GStreamer/gst-plugins-good/blob/1.16.1/tests/examples/qt/qmlsink/main.qml

Unfortunately, I cannot find any documentation or further help about the "GstGLVideoItem" or potential other QML items for GStreamer.

Does anybody know where to find e.g. all properties of "GstGLVideoItem"?

Namely, I wonder if there is information about the video stream, such as FPS or width and height.

Solution

According to the source there aren't much properties for GstGLVideoItem.

qmlRegisterType<QtGLVideoItem> ("org.freedesktop.gstreamer.GLVideoItem", 1, 0, "GstGLVideoItem");

The source for GstGLVideoItem can be found here. The header shows that it is derived from QQuickItem, so it has all the QML Item properties plus the two listed in the header (depending on the version you are using).

Q_PROPERTY(bool itemInitialized
            READ itemInitialized
            NOTIFY itemInitializedChanged)
Q_PROPERTY(bool forceAspectRatio
            READ getForceAspectRatio
            WRITE setForceAspectRatio
            NOTIFY forceAspectRatioChanged)

There is also the function setDAR(gint, gint) which is publicly available.