add ExternalSurfaceWidget #42
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Tested on Radxa and working. |
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The PR adds an ExternalSurfaceWidget
The widget itself does not draw anything. It creates an empty cairo surface and exposes the memory region via shm.
The region can then be uses by a third party application to draw a custom OSD.
This is intended to be used by msposd and the new rockchip support. OpenIPC/msposd#42
But this could be used by any other cairo capeable application.
Tested this with 2 exposed surfaces.