[XviD-devel] DivX5.03 rounding?

[Radek Czyz]

Hello Christoph,

> Are we sure that XVID does correct direct mode Qpel? I may have asked
> earlier, but I remember something that direct mode always uses 8x8 blocks,
> not 16x16 as we do, even if collocated block is INTER, not INTER4V.
> For halfpel this doesn't matter, but for qpel it does.

That's OK, we do it in 8x8 as well. MODE_DIRECT_NO4V is not set in
qpel mode, so motion compensation to be performed on 8x8 blocks.

[code]
      if (Data->qpel || b_mb->mode == MODE_INTER4V) pMB->mode = MODE_DIRECT;
      else pMB->mode = MODE_DIRECT_NO4V; //for faster compensation
[/code]


Radek