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Attribute layer in decode demo

Hi everyone,

I've written a Qt application that calls the decode demo (which I've modified with an x and y location) to display video in a section of the screen.  The decode demo seems to set up the attribute layer (fb2) when it starts up, and I would like to modify it so that the video can be displayed "through" the Qt program in any area of the screen.

I've been looking in ui.c and trying to modify setOsdTransparency to suit my needs, but things seem to get complicated fast and I'm getting a little lost.

Thanks

Marlon