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<div class="moz-cite-prefix">ok, thanks Min<br>
<br>
<br>
On 06/18/2015 03:28 PM, chen wrote:<br>
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<div>it is magic number, just algorithm trick.</div>
<div> </div>
<div>When you analyze H265 interp Dynamic Range.</div>
<div>You will found it is not balance, it means the middle point
is not 0x8000 (unsigned) or 0 (signed)</div>
<div>The offset magic to avoid overflow.</div>
<div> </div>
<div>Thanks,</div>
<div>Min</div>
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At 2015-06-19 06:21:02,dave <a class="moz-txt-link-rfc2396E" href="mailto:dtyx265@gmail.com"><dtyx265@gmail.com></a> wrote:
>For the interpolation primitives there are multiple versions, pp, ps,
>sp, and ss. Each one adding an offset before a shift. Yet as I review
>the interpolation section 8.5.3.3.3 of the h265 spec, I don't see where
>an offset is added. Am I missing something? Or perhaps the offset
>helps decision making?
>
>thanks,
>Dave
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