Bug#602034: jpeg8 vs jpeg-turbo

[Ondřej Surý <ondrej@sury.org>]

On Wed, Apr 24, 2013 at 3:19 PM, Bill Allombert
<Bill.Allombert@math.u-bordeaux1.fr> wrote:
> On Wed, Apr 24, 2013 at 11:23:04AM +0200, Ondřej Surý wrote:
>> Hi Bill and Debian Developers,
>>
>> My proposal is:
>> A. Add libjpeg-turbo to Debian archive (that's easy)
>> B. Add required provides/alternatives for libjpeg62-dev and
>> libjpeg8-dev (where API/ABI match)
>> C. Decide which package should provide default libjpeg-dev library
>>
>> 1. https://bitbucket.org/libgd/gd-libgd/issue/50/tests-jpeg-jpeg_readc-fails-on-debian
>> 2. http://lists.fedoraproject.org/pipermail/devel/2013-January/176299.html
>> 3. http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=602034
>
> As IJG libjpeg maintainer, my plan is to move to libjpeg9 which has more feature.
>
> I do not see libjpeg-turbo as a suitable replacement. It has
> 1) an different license.
> 2) much more security issues in a much smaller timeframe.
> 3) do not implement the full libjpeg8 ABI, nor the upcoming libjpeg9.

Bill,

sorry to barge in, but as a maintainer of the most prominent rev-deps
of libjpeg (libgd2 & php5-gd), I would like to have some questions
answered, and I cannot find the answer neither on http://www.ijg.org/
nor http://www.infai.org/jpeg/.

1. Who is behind IJG? Is it just Guido Vollbeding or there are more people?
2. What's the legal status of IJG?
3. What is the relation of IJG and InfAI (http://www.infai.org/jpeg/)?
4. Is there a (public) bug tracker?
5. Is there a source repository?
6. Is there a mailing list for libjpeg development/users?
7. How do I contribute code to IJG libjpeg?
8. There are new features incorporated to libjpeg? Is that a community
process? Or how are the changes driven? IJG (and the features they
implement in libjpeg) is independent from jpeg.org (the standards
committee).
9. Is there a documentation for new features of libjpeg (DCT,
SmartScale), so independent implementations can be done?
10. And what is JPEGClub (http://jpegclub.org/)? (Just found it in the
comment rant under: http://blog.kaourantin.net/?p=116)

I haven't been able to find answers at IJG or any linked sites, so as
you are so far the only one taking stand for IJG jpeg implementation,
I would like to to help me to answer those questions.

I wouldn't bother to care about libjpeg in Debian, but it's one of the
core graphics libraries, and I think we should strive for good
compatibility with the rest of the distros, applications and our
users. And the 'new features' of libjpeg seems to contradict this.

Ondrej
--
Ondřej Surý <ondrej@sury.org>