[Bug 105145] vaExportSurfaceHandle interaction with surface interlaced flag prevents switching on vaapi deinterlacing dynamically

https://bugs.freedesktop.org/show_bug.cgi?id=105145

--- Comment #2 from k.philipp@gmail.com --- This "interlaced" data layout - what does it mean exactly? Does it just mean fields in separate surfaces or is there anything else going on additionally? I couldn't find any docs on this in mesa.

Since we can do weaving on the Kodi side anyway (for VDPAU), would it be enough to add flags, say VA_EXPORT_SURFACE_TOP_FIELD and VA_EXPORT_SURFACE_BOTTOM_FIELD, to vaExportSurfaceHandle? Would that then be roughly equivalent to what we get with VDPAURegisterVideoSurfaceNV?