Questions about mfxExtDecVideoProcessing

[softworkz]

mfxExtDecVideoProcessing

The documentation states:

If attached to the mfxVideoParam structure during the Init stage this buffer will instruct decoder to resize output frames via fixed function resize engine (if supported by HW)

I have the following questions about this feature:

• On which hw platforms is this supported?
• How can we detect whether it is supported at runtime? Does it work in the normal way via MFXVideoDECODE_Query? If yes, what's the indication (how are values in the structure set when supported or not supported)?
• Does it support scaling of other surface formats than nv12? (like 10bit HDR HEVC)

Thanks, softworkz