On Mon, Sep 20, 2021 at 10:21:23PM -0400, Manuel Stoeckl wrote: > This resolves a problem where conversions from YUV to X2RGB10LE > would produce color values a factor 4 too small. > > The variable 'yval' used later in the switch case 30 has range > [0,255], but the color channel values in X2RGB10 have two more > bits than 'yval' and can go up to 1023. Increasing (r|g|b)base > by 2 effectively multiplies yval by 4 and fixes this discrepancy.
does white have 1023 ? or 1020 ? a multiplication by 4 would not in general produce a correctly scaled 10bit per channel value from 8bit thx [...] -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB Those who would give up essential Liberty, to purchase a little temporary Safety, deserve neither Liberty nor Safety -- Benjamin Franklin
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