[Open-graphics] RGB/YUV converstion... importance?

[Timothy Miller]

> You are referring to digital conversion?

Yes.

> I don't see that there would be any need for digital conversion unless
> we needed to do video capture of a *digital* video signal.  If we needed
> to do video capture of an analog video signal, I would do analog
> conversion to RGB and then digitize that since otherwise you are going
> to loose information.

We're not doing any kind of capture at all.  I'm talking about
accelerating the last step of video _playback_, which is YUV to RGB
conversion.

> OTOH, can the same hardware with different coefficients do the reverse
> conversion?

>From the formulas we have, it appears not.  If we were to generalize
it a lot, yes.  We just need a 4x3 matrix.  But we want to simplify it
and build the constants into the logic.