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

Subject: Re: [boost] [GIL] Pixel Layout Padding?
From: TONGARI J (tongari95_at_[hidden])
Date: 2013-12-26 10:21:32

2013/12/26 TONGARI J <tongari95_at_[hidden]>

> Hi there,
>
> The current gil::pixel design has a deficiency that you can't specify the
> align of pixel, for example, you can't have an RGBX pixel in GIL where X is
> padding.
>
> An alternative is to introduce a dummy channel for X, but that doesn't
> seem to be a good idea as we don't want to mess up the color space.
>
> So, maybe it'd be better to extend the current design, say,
> pixel<ChannelValue, Layout>, to something like pixel<ChannelValue, Layout,
> Align>.
>
> Then we can specify RGBX as pixel<uint8_t, rgb_layout_t, 4>, or XRGB as
> pixel<uint8_t, rgb_layout_t, -4> where minus means left justify.
>

Sorry, I mean RGBX as pixel<uint8_t, rgb_layout_t, -4>; XRGB as
pixel<uint8_t, rgb_layout_t, 4>, apparently I'm confused by myself :p

> Ideas?
>