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List:       linux-video
Subject:    Re: [video4linux] Pixel formats/byte swap
From:       alexb () jetsuite ! com (Alex Bakaev)
Date:       1998-07-28 18:16:23
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Richard,

that's what I meant. Have one color format and *one* flag that says what
to swap; I meant to get away with swap odd/swap even.
Alex

Richard Guenther wrote:
> 
> No, I dont agree with you both. Rather than defining tons of
> variants of YUYV32, I would define the swap-constants and
> pass something like YUYV32|SWAP_12 to get YYUV32 which would
> be very useful if you do color-based object recognition!
> (you would have a 8x8-bit UV-lookup-table - no needs to
> shift bits around with YYUV).
> 
> Richard.
> 
> On Mon, 27 Jul 1998, Bill Dirks wrote:
> 
> > I agree with Alex. Let's explicitly define the pixel formats we want to
> > be available, rather than make 16 variations of every format, many of
> > which don't make sense.
> >
> > Bill.
> >
> > Alex Bakaev wrote:
> > >
> > > Yep,
> > > this could be useful and very easy to do with bt848. Except it should be
> > > specified with the pixel format, so there is no need for 4 #defines.
> > >
> > > Alex
> > >
> > > Richard Guenther wrote:
> > > >
> > > > Hi!
> > > >
> > > > I completely agree with you - compatibility is not an issue
> > > > (if its not easy to achieve).
> > > >
> > > > One thing apout the proposal:
> > > > It would be nice to have the bt848 capability to swap bytes
> > > > of the PIX_FMT included in the FMT_FLAGS, i.e.
> > > > FMT_FLAG_WSWAP_EVEN, FMT_FLAG_WSWAP_ODD,
> > > > FMT_FLAG_BSWAP_EVEN, FMT_FLAG_BSWAP_ODD
> > > >
> > > > Richard.
> > ------------
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> > message.
> >
> 
> --
> Richard Guenther <richard.guenther@student.uni-tuebingen.de>
> PGP: 2E829319 - 2F 83 FC 93 E9 E4 19 E2 93 7A 32 42 45 37 23 57
> WWW: http://www.anatom.uni-tuebingen.de/~richi/
> 
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