[Libva] gst-vaapi, uploading to own textures

[Víctor M. Jáquez L.]

You can either use clutter-gst, (if you are using gstreamer 1.6)
glimagesink, or craft your on video sink.

The simplest way is, if you use clutter, embedded a cluttervideosink actor in
your code.

If you write your own video sink, you would handle the GstVidoeGLTextureUpload
meta:

http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-base-libs/html/gst-plugins-base-libs-gstvideometa.html#GstVideoGLTextureUpload

WebKitGTK+ does that with its own video sink (though, it is moving to use
glimagesink).


In the case of using glimagesink, you can connect the 'client-draw' signal and
render the given texture:

http://cgit.freedesktop.org/gstreamer/gst-plugins-bad/tree/tests/examples/gl/sdl/sdlshare2.c?h=1.6

There's another option, juggling with the GL context:

http://cgit.freedesktop.org/gstreamer/gst-plugins-bad/tree/tests/examples/gl/sdl/sdlshare.c?h=1.6


vmjl

On 09/29/15 at 12:38pm, Dolevo Jay wrote:
> Hi,
> In my device, I receive video streams from different sources (local or remote). After decoding them, I show them on the display using OpenGL. So far, all decoding was done in software. I was receiving RGB frames from each source and uploading them to certain textures to render them. The sources are now decoded in hardware using gstreamer-vaapi. An example gst line is as follows: gst-launch-1.0 filesrc location=/store/1.mp4 ! qtdemux ! vaapidecode ! vaapisink display=2This works great. However, as you might imagine, vaapisink creates its own wondow and draw the decoded frames onto it. What I would like to do is to feed the textures that I created in my application and feed them to vaapidecode or vaapisink element so that the rendering can happen in my canvas. I have been digging into the vaapidecode and vaapisink elements to see where the textures are uploaded, but couldn't spot the exact line to feed my texture info into. Could anyone help me? A function name, or a line number or any hint would be greatly appreciated.
> Thanks,
>  		 	   		  

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