Re: [boost] [GIL] Pixel Layout Padding?

Subject: Re: [boost] [GIL] Pixel Layout Padding?
From: TONGARI J (tongari95_at_[hidden])
Date: 2013-12-27 13:05:00

2013/12/28 Christian Henning <chhenning_at_[hidden]>

> >
> > > Could you describe a use case?
> > >
> >
> > I have to work with something like RGBQUAD which's layout is BGRX:
> >
> >
> http://msdn.microsoft.com/en-us/library/windows/desktop/dd162938(v=vs.85).aspx
>
>
> QQ, the rgbReserved represents the alignment?
>

At least it requires 4 bytes by that structure.
Also note that Quartz 2D also has padded RGB: http://tinyurl.com/kdawwkl
So I think GIL being a generic library is reasonable to fill such a
requirement.

Now I have my pixel defined as:

template<class T, class Layout, int padding = 0>
class pixel;

So RGBX becomes pixel<uint8_t, rgb_layout_t, 1>.