[gstreamer-bugs] [Bug 595468] New: [GstVideoMixer] as a base class

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=595468
  GStreamer | gst-plugins-good | git

           Summary: [GstVideoMixer] as a base class
    Classification: Desktop
           Product: GStreamer
           Version: git
        OS/Version: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-good
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: julien.isorce at gmail.com
         QAContact: gstreamer-bugs at lists.sourceforge.net
      GNOME target: ---
     GNOME version: ---


Hi,

I think it make sence to have a more general video mixer that plugins could
implement.
For example the base class would be responsible for managing the different
input framerate and also responsible for collecting buffers using
gstcollectpads.

Then the subclass could just implement a kind of draw callback where it can mix
the video buffer in the way he wants.

My use case is a glvideomixer. Withtout the base class I suggest, It will share
a lot of code with the existing videomixer filter.

More generally, in this way we will have more kind of video mixers (not only Z
ordering and position)

Julien

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