Re: change the value of pixels padding bits

[Loris B. <lb...@lo...>]

On Wednesday 06 August 2008 09:52, Constantin Kaplinsky wrote:
> Hello Loris,
>
> >>>>> Loris Boillet wrote:
> >
> > With the RFB protocol, if depth is set to 24, then the actual nb of bits
> > per pixels sent will be 32: 8 padding bits and 24 bits for the RGB info.
> > The padding bits are set to zero and this can be a problem if the pixel
> > data is applyied in a ARGB context (A=alpha channel; if 0 then pixel is
> > fully transparent, if 255 it is fully opaque). I have browsed the
> > tightvncserver code hoping to find the place where I could change the
> > value of these padding bits, but no luck so far. Does anyone know where I
> > could do that ?
>
> It's not a good idea to change padding bits in the server code. Instead,
> you should interpret pixel data correctly in the viewer.

Can you explain why it's not a good idea ? Doing the correct interpretation in 
the viewer is the first thing I have tried, but the viewer is running in a 
very low ressources context so it's slow. That's why I would like to spare 
this interpretation on the viewer side by forcing the server to send 
the "correct" data.

Loris