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List:       linux-video
Subject:    Re: [video4linux] Pixel formats/byte swap
From:       Richard Guenther <zxmpm11 () student ! uni-tuebingen ! de>
Date:       1998-07-28 9:20:22
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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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--
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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