[x265] Fwd: [PATCH] asm code for ipfilterH_pp, 4 tap filter

[Jason Garrett-Glaser]

> I had a discussion about the width size with Min, he suggested that new
> interpolation algorithm (sorry, I don't know much about this algorithm) may
> use odd-block sizes also. so we need to provide support for them too but I
> think currently it using multiple of 4.

21:14 <@Skyler_> does it have 5x8 blocks?
21:15 <@Skyler_> as far as I can tell from the mailing list post, they're
                 designing the asm functions to handle arbitrary widths,
                 including nubmers like 3 or 5 or 7, which confuses me
21:15 <@Skyler_> because I didn't think those existed.
21:35 < Manao> they do not. partition sizes are NxN, Nx2N, 2NxN, (Nx4N, 3Nx4N),
               (4NxN, 4Nx3), with N=4, 8, 16, 32 (only for the first 3) or 64
               (only for the first)
21:35 < Manao> s/4Nx3/4Nx3N/
21:54 < Manao> oh, and there is no 4x4 for inter prediction
23:13 < kierank> Skyler_: they think it's c
23:14 < kierank> and perhaps are not aware that you write different
                 optimisations depending on the width/height

Jason