I have some questions about the overlay definition in "overlay.h":
(1) Is the application that calls "createOverlay",
   and then uses this as the input argument for "SetVideoSurface" in
the player driver?

(2) If I want to display video in the full-screen mode, how to get the
size of display screen by this overlay interface?
The video render MIO does not care about the display position, just
let the application set the scaling and roution parameter?

(3) If I want the overlay hardware to allocate more than 2 buffers of
a specified size, sharing these buffers with the video decoder node:
Is there an API available?
Also, I think "swapBuffers" is not enough if I want the overlay to
display a specified buffer.


Thanks
Jasperr
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