[MPlayer-dev-eng] Defining MPlayers RGB color formats

[Michael Niedermayer]

Hi

On Monday 09 August 2004 15:58, Michael Niedermayer wrote:
> Hi
>
> On Monday 09 August 2004 13:07, Reimar Döffinger wrote:
> > Hi,
> >
> > > I think this question has already been answered in the thread
> > > starting with:
> > >
> > > From: Michael Niedermayer <michaelni at gmx.at>
> > > To: mplayer-dev-eng at mplayer.dev.hu
> > > Date: Wed, 21 Jan 2004 16:47:56 +0100
> > > Subject: [MPlayer-dev-eng] RGB vs. BGR
> > > Message-Id: <200401211647.56307.michaelni at gmx.at>
> >
> > No, it wasn't answered because it is plain wrong.
>
> yes, alexs awnser was inconsistent and incomplete, and alex is away, the
> technically best solution would be to ignore alex and make a
> consistant&complete list which is as close as possible to the current
> implementation, as i dont really see a different solution ill do that

memory order:           old name 	new name
RGBA                    		RGBA
ARGB                    		ARGB
BGRA                    		BGRA
ABGR                    		ABGR
RGB                     RGB24		RGB
BGR                     BGR24		BGR

order in an int         old name 	new name
mostsignifant .. least significant bit
8A8R8G8B                BGR32		BGR32
8A8B8G8R                RGB32		RGB32
5R6G5B                  BGR16		BGR16
5B6G5R                  RGB16		RGB16
1A5R5G5B                BGR15		BGR15
1A5B5G5R                RGB15		RGB15
3R3G2B                  BGR8		BGR8
2B3G3R                  RGB8		RGB8
1R2G1B                  BG4R		BGR4_CHAR
1B2G1R                  RG4B		RGB4_CHAR
1R2G1B1R2G1B            BGR4		BGR4
1B2G1R1B2G1R            RGB4		RGB4

RGB/BGR with a number means in register ordering, without a number it means in 
memory ordering, in the later case the number is unneeded as each letter 
always represents 8bits, this would even work with 16bit per component 
(RRGGBB)
depending upon little vs big endian different in memory & in register formats 
will be equal (LE -> BGRA == BGR32 / BE -> ARGB == BGR32)

if there are no better suggestions and no one against then ill update 
img_format.*

[...]
-- 
Michael
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