Custom Gst.Element in GTK3

[Thibault Saunier]

Hello,

I think when you say Gtk3 you mean GStreamer 1.0 with PyGObject.

Do you have gst-python installed? It is necessary to be able to create
GstElement subclasses.

You can have a look at that example:
http://cgit.freedesktop.org/gstreamer/gst-python/tree/examples/plugins/python/sinkelement.py

Regards,

Thibault Saunier


On Thu, Jul 17, 2014 at 12:07 AM, Manuel <manuel at wenns-um-email-geht.de>
wrote:

> Custom Gst.Element in GTK3
> --------------------------
> Hi all,
>
> I wrote a gst.Element (GTK2), which is a simple filter that just
> forwards all buffers it receives on the sink-pad to the src-pad. Later I
> will grab some information from the buffer before forwarding it. (More
> precisely I will grab the timestamps and show some text based on the
> time, like subtitles). The GTK2-version works fine.
>
> Today I tried to change my code so that it uses the GTK3
> gi.repository-package.
> Although the new class looks almost the same it doesn't work.
>
> This is the error printed on the console:
> Error: Internal error: can't allocate images xvimagesink.c(979):
> gst_xvimagesink_show_frame ():
>
> /GstPlayBin:MultimediaPlayer/GstPlaySink:playsink/GstBin:vbin/GstBin:timed-video-bin/GstAutoVideoSink:autovideosink0/GstXvImageSink:autovideosink0-actual-sink-xvimage:
> We don't have a bufferpool negotiated
>
> Here is my GTK2-version: http://pastebin.com/J2gHfvS4
> And here the GTK3-version: http://pastebin.com/9u8zzcTk
>
> This is a scenario:
> A video-file is played using playbin. The playbin's video-sink is set to
> a Gtk.Bin that combines my own Gst.Element with textoverlay and an
> autovideosink.
>
> NOTE: If you remove the textoverlay from the GTK3 example then at least
> the audio is playing ;)
>
> I would be very grateful for your help. :)
>
> Best Regards
> _______________________________________________
> gstreamer-devel mailing list
> gstreamer-devel at lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/gstreamer-devel/attachments/20140717/57f21e6b/attachment.html>