Display window to use with EGL in gstglimagesink

[Sebastian Dröge]

On Do, 2014-06-26 at 12:07 +0530, pankaj pipada wrote:
> Hello,
> 
> I am trying to use a GstBufferPool proposed by glimagesink in a custom
> decoder plugin with EGLImage as memory type.
> Could you please suggest the windowing system that is to be used when
> creating a EGLContext?
> I could not get x11 window to initialize with EGL.
> If I set environment variables as: GST_GL_PLATFORM="egl"
> and GST_GL_WINDOW="x11"
> glimagesink tries to create a x11 display and window and skips EGL
> completely.
> 
> With  GST_GL_PLATFORM="egl" and GST_GL_WINDOW="" window creation fails
> and gstglwindow.c says "creating dummy window".
> (plugins-bad/gst-libs/gst/gl/gstglwindow.c#143)
> 
> Is there a way to get around this?
> I am using gstreamer-bad-plugins 1.3.2 with Ubuntu 14.04.

What kind of window do you want to create?

If you choose
> GST_GL_PLATFORM=egl GST_GL_WINDOW=egl
you will get an offscreen EGL surface as window, and if you want it to
be rendered into something else you'll have to provide a window to the
sink.

If you choose
> GST_GL_PLATFORM=egl GST_GL_WINDOW=x11
you will get a X11 window and all the windowing is done via X11, which
also means that an X11 display is used. But as GL platform EGL will be
used.

-- 
Sebastian Dröge, Centricular Ltd - http://www.centricular.com
Expertise, Straight from the Source
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