Add flag to swap references.

intel / libva

Libva is an implementation for VA-API (Video Acceleration API)

http://intel.github.io/libva/

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Add flag to swap references. #817

Closed FurongZhang closed 1 month ago

FurongZhang commented 6 months ago

There are different understanding of forward references(could be past frames or future frames) and backward references (could be past frames or future frames).

This flag allows the user to configure the reference as past or future frames.

Value 0: by default, forward_references mean future frames, backward_references mean past frames
Value 1: swap, forward_references mean past frames, backward_references mean future frames

ceyusa commented 6 months ago

would be possible to the driver to ignore the swap request?

FurongZhang commented 5 months ago

would be possible to the driver to ignore the swap request?

If the application does not need swap, the application can ignore the swap.