Re: [PATCH] interlaced packed pixels

[Russell King]

On Fri, Apr 04, 2003 at 01:17:15PM +0200, Geert Uytterhoeven wrote:
> I'd like to introduce a new frame buffer type to accommodate packed pixel frame
> buffers that store the even and odd fields separately. This is typically used
> in graphics hardware for TV output (e.g. set-top boxes).

While we're on the subject of framebuffers, one area which needs to be
looked into is the pixel layout for all of:

- little endian byte, little endian pixel
	1bpp: word 0 bit 31..0 = pixel 31..0)
	16bpp: word 0 bit 31..0 = pixel1 bits 15..0 pixel0 bits 15..0) 
- little endian byte, big endian pixel
	1bpp: word 0 bit 31..0 = pixel 24..31, 16..23, 8..15, 0..7)
	16bpp: word 0 bit 31..0 = pixel1 bits 15..0 pixel0 bits 15..0) 
- big endian byte, big endian pixel
	1bpp: word 0 bit 31..0 = pixel 0..31)
	16bpp: word 0 bit 31..0 = pixel0 bits 15..0 pixel1 bits 15..0) 

We currently do not support all these combinations, and so far I haven't
looked into it.  It is on my (great long) to do list.

-- 
Russell King ([e-mail])                The developer of ARM Linux
             http://www.arm.linux.org.uk/personal/aboutme.html