[Bug 685282] dvdspu: figure out how to make it work with hardware decoders and subpicture overlays

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=685282
  GStreamer | gst-plugins-bad | git

Matej Knopp <matej.knopp> changed:

           What    |Removed                     |Added
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                 CC|                            |matej.knopp at gmail.com

--- Comment #11 from Matej Knopp <matej.knopp at gmail.com> 2013-11-26 01:03:36 UTC ---
Just an idea, does anyone see any potential issues in adding multiple
GstVideoOverlayRectangles to the composition instead of just one big rectangle?
Basically during the RLE process we'd remember where the actual non transparent
pixels were, group this into rectangles and then add rectangle for each area?
The buffers could share the underlying framebuffer to prevent copying (or maybe
not since most of the are would be transparent and unused).

The benefit would be significantly reduced blending (since most transparent
pixels wouldn't need to be blended), also downstream could adjust rectangle
positions if the dimensions don't match (which is sometimes the case with
ripped DVDs).

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