widget overlaying autovidesink

[Nikola]

Hello,

has anyone successfully overplayed widget over autovideosink.

Setup includes testing videosource which broadcasts over udp to udpsink.

I am trying to do exactly that in Qt 5.8 on windows but when I start video widget gets overwritten.

Are there any examples of this, especially because this seems pretty standard task to most things done with video playing.

Kind regards,

Nikola.  

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[Nicolas Dufresne-5]

Le mercredi 06 septembre 2017 à 16:45 +0200, Nikola a écrit :
> Hello,
>
> has anyone successfully overplayed widget over autovideosink.

This is not possible in a portable way. On X11 you could place semi-
transparent window on top with your controls, but this is not possible
on wayland.

In general best is to use a specific videosink for your application
widget system. For QT you could maybe try qmlglsink. It will use a GL
rendererer, and the display will be just like any other widget.

>
> Setup includes testing videosource which broadcasts over udp to
> udpsink.
>
> I am trying to do exactly that in Qt 5.8 on windows but when I start
> video widget gets overwritten.
> Are there any examples of this, especially because this seems pretty
> standard task to most things done with video playing.
>
>
> Kind regards,
> Nikola.  
> _______________________________________________
> gstreamer-devel mailing list
> [hidden email]
> https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel

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[Nikola]

Thank you for your response.

I didn't know this is possibility in QT.

Only thing which is confusing now is how to implement this.

I have looked at examples around but I didn't get the general idea.

Currently I am showing video by using following code:

----

void GstPlayer::playRTP(int port) {

    m_pipeline = QGst::Pipeline::create();

    QString rtpPipeDescription01 = QString("udpsrc port=\"%1\" ! "

                                "application/x-rtp, encoding-name=JPEG,payload=26 ! "

                                "rtpjpegdepay ! "

                                "jpegdec ! "

                                "autovideosink").arg(port);

    try {

        m_pipeline = QGst::Parse::launch(rtpPipeDescription01).dynamicCast<QGst::Pipeline>();

    } catch (const QGlib::Error & error) {

        qCritical() << error;

        qFatal("One or more elements are missing");

    }

    watchPipeline(m_pipeline);

    m_pipeline->setState(QGst::StatePlaying);

}

 -----

First this class would be instantiated. 

On the qtdesigner I would add widget and promote it to this class, and then play would be called with designated port.

I have tried to use several sinks instead of autovideosink: qtvideosink", "qtglvideosink" , "qwidgetvideosink" (or "qt5videosink", "qt5glvideosink" and "qwidget5videosink" in Qt5) but all are reported as not present (example: "no element \"qwidget5videosink\"")

Found them on this page: https://gstreamer.freedesktop.org/data/doc/gstreamer/head/qt-gstreamer/html/classQGst_1_1Ui_1_1VideoWidget.html

 Should I use it in different way? 

Kind regards,

Nikola.

On Wed, Sep 6, 2017 at 6:35 PM, Nicolas Dufresne <[hidden email]> wrote:

Le mercredi 06 septembre 2017 à 16:45 +0200, Nikola a écrit :
> Hello,
>
> has anyone successfully overplayed widget over autovideosink.

This is not possible in a portable way. On X11 you could place semi-
transparent window on top with your controls, but this is not possible
on wayland.

In general best is to use a specific videosink for your application
widget system. For QT you could maybe try qmlglsink. It will use a GL
rendererer, and the display will be just like any other widget.
>
> Setup includes testing videosource which broadcasts over udp to
> udpsink.
>
> I am trying to do exactly that in Qt 5.8 on windows but when I start
> video widget gets overwritten.
> Are there any examples of this, especially because this seems pretty
> standard task to most things done with video playing.
>
>
> Kind regards,
> Nikola.
> _______________________________________________
> gstreamer-devel mailing list
> [hidden email]
> https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
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