[FFmpeg-devel] [PATCH v2 2/3] vaapi_encode: Rewrite slice/tile support

[Linjie Fu]

On Fri, Aug 14, 2020 at 5:51 AM Mark Thompson <sw at jkqxz.net> wrote:
>
> This precalculates all of the information we will need to define slice
> and tile positions at init time rather than rebuilding some of it with
> every slice.  The control of tiles is generalised to match slices, so that
> arbitrary tile and slice layouts are possible within the constraint that
> slices can't cross tile boundaries (which comes from how VAAPI handles
> slices and tiles).  Support for the EQUAL_MULTI_ROWS slice structure fits
> easily into this, so it is added at the same time.

Some inputs for EQUAL_MULTI_ROWS slice structure, I believe there are
some discussions in libva and hw behavior team. To be honest, I don't think
the current notation/comment is suitable for what the hw could do.

- Linjie