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From Jeremias Maerki <...@jeremias-maerki.ch>
Subject Re: Using PNGEncoder and PNGDecoder
Date Fri, 19 Sep 2008 13:29:31 GMT
On 19.09.2008 15:10:05 Jean-François El Fouly wrote:
> Jeremias Maerki a écrit :
> > I'd recommend you use Image I/O instead. The codecs here are nice for
> > certain use cases but there are too few people around here to help
> > maintain and support the code. With Image I/O you have a much bigger
> > pool of people that can help you if you run into problems. And Image I/O
> > is also already available to your application if you're using Java 1.4
> > or later.
> >
> >   
> Thanks !
> The previous version used ImageIO indeed. But I never figured how to 
> handle PNG metadata with ImageIO -- though I spent a few days at it 
> earlier this year, and got out with the feeling that ImageIO and JAI are 
> among the most cryptic and ill-documented parts of the Java Platform.
> And at this point I need precise control, what I need is really 
> PNG-specific and rather tricky BTW.

Right, that's the downside of Image I/O. But then, the XML-based approach
to metadata is also very powerful.

Another option that would give you a lot of control but possibly with a
simpler API is Apache Sanselan (incubating).
http://incubator.apache.org/sanselan

> Never mind, it works well now; though I'm not 100% sure of what I 
> changed to make it work.
>
> I'll use it in another place where I have shortly used another open 
> source PNG encoder that is probably getting old by now.
> But let me say thank you once more.
> 
> Jean-Francois El Fouly



Jeremias Maerki


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