[FFmpeg-devel] full swscale relicensing to LGPL

[Cédric Schieli]

2009/3/20 Michael Niedermayer <michaelni at gmx.at>:
> Hi
>
> A company is apparently offering 20KEUR to have all of swscale relicensed
> under LGPL.
>
> Iam not opposed to this, but iam not the only author who still has GPL
> code in there, so my question to all other authors is:
> do you
> agree to relicensing your code under /libswscale as of current ffmpeg HEAD
> to LGPL?
> If so what percentage, if any of the money do you want for it?
>
> some statistics about the x86 asm (other asm seems with the exception of
> swscale_altivec_template to be under LGPL already)
> svn blame -x --ignore-space-change -x --ignore-all-space rgb2rgb.c rgb2rgb_template.c swscale.c swscale_template.c yuv2rgb.c yuv2rgb_template.c rgb2rgb.h swscale.h swscale_internal.h ?>blame3
>
> egrep '(\\n\\t|%%mm)' blame3 | sed 's/ *[0-9]* *\([^ ]*\) .*/\1/' | sort |uniq -c | sort -n
> ? ? ?7 ivo
> ? ? 13 flameeyes
> ? ? 20 atmos4
> ? ? 34 stefang
> ? ? 37 sdrik
> ? ? 43 reimar
> ? ? 71 cehoyos
> ? ?117 diego
> ? ?192 nick
> ? ?210 arpi
> ? ?301 aurel
> ? 1663 michael
>
> this of course has to be taken with a grain of salt as its just a automated
> statistic diego for example wrote no asm and aurels commits where:
> ?"adapting existing mmx/mmx2/sse/3dnow optimizations so they work on x86_64"
> ?"fix few x86_64 registers handling"
> ?"10000l : fix a crash on x86 due to an horrible mistake in my x86_64 patch"
>
> and then there is the original code from yuv2rgb_template.c which is
> copyrighted by god knows who (i traced it to r2 of mplayer libvo/yuv2rgb_mmx.c
> commited by arpi and probably from libmpeg2)
> possibly copyrighted by Olie Lho
> and swscale_altivec_template.c by Romain Dolbeau
>
> Also, no matter how small your contribution to sws, please reply and say
> clearly what you want or dont want and if you are ok with LGPL or not.
>
> Also diego might have some list of people who already unconditionally agreed
> or unconditionally disagreed (i dont remember) this also would be usefull.
>
> PS: if any other companies want to increase the amount further, after all
> more than one would benefit from lgpl swscale, thats of course welcome too.
>
> --
> Michael ? ? GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
>
> I am the wisest man alive, for I know one thing, and that is that I know
> nothing. -- Socrates
>
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My work mainly consists of refactoring and reusing existing codepath,
so the copyright belongs more to the original authors than to me. I
will not object to any relicensing of my parts. And no need to send
money.