gif-1.0.tgz ??

Sean Hinde <>
Mon Feb 3 13:24:50 CET 2003

I have been playing with the gif-1.0 contrib and it works quite nicely.
There ain't a lot of error checking in the C code but it works well enough
and is easy to modify.

I've also nearly got Scott's edtk version running. Just some final couple of
gremlins getting all the supporting libs to compile cleanly..

Anyway, here's to June when the dreaded LZW patent runs out - I'd guess the
libgd author will celebrate with a big bang launch of gif support - it is
not as though he doesn't have the code, as he is the same guy who wrote the
one in Joe's contrib :)

If anyone wishes to send me their nearly complete Erlang version though I'm
happy to spend a little time digging around to see if I can add anything to
the party.


> -----Original Message-----
> From: Peter Lund [mailto:]
> Sent: 03 February 2003 09:13
> To: Scott Lystig Fritchie
> Cc: Erlang-Questions
> Subject: SV: gif-1.0.tgz ?? 
> Gif seemed good since I was planning to present generated, few colour,
> pictures, via an erlang inets server. Both IE6 and NS7 support png
> pictures as well, so png would do as well as gif, for my purposes.
> I see on that gd does NOT support gifs
> anymore since LZW compression is patented by Unisys.
> To run gif-1.0.tgz, I had to find and download GCC and Make support
> and then get this to work in my environment. Nicer (for Erlang/OTP)
> would have been if graphics for the web could be generated just using
> Erlang/OTP. Good would also have been if it would be possible to
> import a picture (gif,png,...), make modifications on it and then
> publish it. Now you have to start drawing the picture from scratch.
> Thanks,
> Peter
> > -----Ursprungligt meddelande-----
> > Från: Scott Lystig Fritchie [mailto:]
> > Skickat: den 3 februari 2003 07:58
> > Till: Peter Lund
> > Kopia: Erlang-Questions
> > Ämne: Re: gif-1.0.tgz ??
> >
> >
> > >>>>> "pl" == Peter Lund <> writes:
> >
> > pl> I am trying to generate gifs in Erlang for my home hobby project
> > pl> on my W2K machine.
> >
> > Must it be GIF?  How about PNG, JPEG and WBMP images?  I've got a
> > driver for libgd (see that's 
> 95% done.(*)
> >
> > See for the
> > source.  The driver is extensively documented as an Erlang Driver
> > Toolkit tutorial; I wrote it paragraph-for-paragraph while creating
> > the driver.
> >
> > -Scott
> >
> > (*) There's an odd problem that I haven't solved with the regression
> > test for the gd example driver: sometimes the linked-in 
> style driver's
> > output doesn't match byte-for-byte the pipe-style driver's output.
> > However, if you convert both files to JPEG (with same
> > compression/quality settings), they turn out identical.
> >
> > Version 1.0-rc3 also has an unfixed bug in the "sample1" 
> driver that I
> > also need to fix before a "real" 1.0 release.
> >

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