[Bug 752411] video-overlay-composition:move _GstVideoOverlayRectangle and _GstVideoOverlayComposition structs to their header file

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=752411

--- Comment #3 from Sudip Jain <sudip.jain at st.com> ---
(In reply to Sudip Jain from comment #2)
> My objective is to compose subtitle/s using waylandsink at hardware
> composition stage. And not blend using gstdvbsuboverlay element directly
> onto the video frame (low performance)
> 
> For this, the video buffer is attached as overlay composition meta data by
> gstdvbsuboverlay element. The rectangles are included in the composition.
Correction: subtitle buffer is attached as overlay composition meta data to
video frame buffer. 
> 
> I am using waylandsink and extract the meta data through  ometa =
> gst_buffer_get_video_overlay_composition_meta (buffer);
> 
> And pull out rectangles, 
> rect = ometa->overlay->rectangles[n];
> 
> These rectangles pixmap is copied on the weston subsurface interface, to be
> composed by the hardware.
> 
> So what is wrong here ? And neither I think they should be kept private for
> any reason.
> 
> I have implemented and tested this. Pretty much as explained here
> http://permalink.gmane.org/gmane.comp.video.gstreamer.bugs/96170 and
> http://lists.freedesktop.org/archives/gstreamer-bugs/2011-November/085507.
> html

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