[MPlayer-dev-eng] Defining MPlayers RGB color formats
Michael Niedermayer
michaelni at gmx.at
Mon Aug 9 16:51:17 CEST 2004
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
level[i]= get_vlc(); i+=get_vlc(); (violates patent EP0266049)
median(mv[y-1][x], mv[y][x-1], mv[y+1][x+1]); (violates patent #5,905,535)
buf[i]= qp - buf[i-1]; (violates patent #?)
for more examples, see http://mplayerhq.hu/~michael/patent.html
stop it, see http://petition.eurolinux.org & http://petition.ffii.org/eubsa/en
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