[Haskell-cafe] ANNOUNCE: netpbm

[C K Kashyap]

That sounds cool!!!! Way to go Niklas!!!

Regards,
Kashyap


On Sat, Mar 2, 2013 at 6:24 AM, Niklas Hambüchen <mail at nh2.me> wrote:

> I'm happy to announce a new library, "netpbm", a full implementation of
> the netpbm image formats (PPM, PGM, PBM) in pure Haskell.
>
> The P*N formats describe themselves as "as easy as possible"; they
> mainly consist of dimensions + uncompressed data and are used especially
> in between graphics programs, e.g. between ImageMagick and its
> ghostscript part as well as in ffmpeg.
>
> There are six formats (bitmap, greyscale, color, each of them coming in
> binary and ASCII variants). This parses all of them.
>
> The main focus of this library is *pedantic* adherence to the spec
> (http://netpbm.sourceforge.net/doc/pbm.html) - in fact I claim that all
> implementations out there do not properly implement the spec correctly,
> not even the netpbm project itself. I have not properly verified this
> yet, but my library can parse valid PPM files that don't display in my
> image viewer (which is built on top of the C library in question).
> To be honest, one cannot really blame anybody for this since netpbm
> allows pretty insane things (such as comments inside numeric literals)
> and its claim to be simple is absolutely hilarious.
>
> haskell-netpbm is backed by an extensive test suite that checks its
> compatibility with images created by common programs (GIMP, convert),
> public data sets, and random pictures I found on the Internet.
>
> It is built using attoparsec. You can find it on
>
>     http://hackage.haskell.org/package/netpbm
>
> Any contributions in form of code, tests images or claims that I don't
> implement the spec right are highly welcome at
>
>     https://github.com/nh2/haskell-netpbm
>
> Please note that I just finished the implementation and that I will
> clean up (break) the API in the next release, but I found it made sense
> to announce it as early as possible now that the format implementation
> is complete.
>
> Niklas
>
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