gst-vaapi and opengl again

[Jorge Fernandez Monteagudo]

Hi Nicolas, thanks for answering!

Could you clarify a little more about the GstVideoContext and GstSurface role, I would like to know
what is going on?

About the GstVideoContext, in my little X11 application, where I open the display, I do the 'gst_bus_set_sync_handler'
in order to call 'gst_video_context_set_context_pointer' and set the same display, but is it needed in order to create
an opengl context in the vaapi side?

And about the GstSurface... are you talking about GstSurfaceBuffer? How this arrive to my application?
If I use an playbin2 pipeline, is it needed to implement a video sink, like the ClutterGstVideoSink in order to receive this
buffer or the vaapisink is able to export them?

And my last one, Are the clutter libraries needed? I would like to minimize the amount of libraries on my custom
system, and I would like to avoid pango, cogl, clutter etc, and let the basic ones.

Thanks!
Jorge

________________________________________
From: gstreamer-devel-bounces+jorgefm=cirsa.com at lists.freedesktop.org [gstreamer-devel-bounces+jorgefm=cirsa.com at lists.freedesktop.org] On Behalf Of Nicolas Dufresne [nicolas.dufresne at collabora.co.uk]
Sent: Friday, March 08, 2013 4:16 AM
To: Discussion of the development of and with GStreamer
Subject: Re: gst-vaapi and opengl again

Le mardi 05 mars 2013 à 05:23 -0800, Jorge a écrit :
I've read solutions using clutter but it could be done only with gstreamer
libs? Is there a minimal player in source code to grasp the idea?
In 0.10, you can use the GstVideoContext and GstSurface APIs to upload a VA surface to a texture. Note, these APIs are experimental and have been removed in 1.0. They might be reintroduce in another form later, but these things are hard to get right. You can look at the code in 0.10 clutter-gst and it's sample media player.

cheers,
Nicolas


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