APNG patch for graphics/png port

[Coleman Kane]

On Mon, 2008-12-15 at 02:28 +0300, Andrey Chernov wrote:
> On Sun, Dec 14, 2008 at 01:22:34PM -0500, Coleman Kane wrote:
> > One thing that I noticed was the APNG patch from here:
> >   * http://littlesvr.ca/apng/.
> > This seems to be expected by Thunderbird and is part of the latest
> > source tree. Mozilla has been maintaining a format spec here:
> >   * https://wiki.mozilla.org/APNG_Specification
> 
> It should be either accepted by libpng developers (and this way appears in 
> the png port automatically) or separate slave apng port should be made. 
> Porter is poor replacement for developer, especially considering lots of 
> security holes libpng long history.
> 

That is a good point, though the author of libpng suggests the MNG
format for animated graphics (and JNG as a jpeg version). This leads me
to believe that he's probably uninterested in actually incorporating the
APNG patch into libpng.

Honestly, I don't understand why the mozilla people have decided to push
this APNG standard now. Maybe I'll just go and post into that mozilla
issue a complain about wasting development time on an unfinished spec
that seems like a reimplementation of MNG.

I'll write to Greg (author) and see what he says. This is one of those
annoying points in software evolution where big entity A begins
spreading around a patched version of Author B's software, which may end
up rivaling Author B's implementation of the patch's functionality.

-- 
Coleman Kane
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