Arithmetic coding in Fedora libjpeg (bug #639531)

[Roberto Ragusa]

Björn Persson wrote:
> Tom Lane wrote:
>> I believe that they'd be best advised to say "no", because at this point
>> one of JPEG's principal attractions is near-universal compatibility.
>> Throwing A/C into the mix will throw that away, for what really is a
>> very marginal gain in compression efficiency.
> 
> It's well known around the Internet that to achieve compatibility you should 
> be conservative in what you send and liberal in what you accept. Applied to 
> JPEG: Use only Huffman coding when encoding – except maybe if you know that all 
> recipients can handle arithmetic coding – but support both encodings when 
> decoding.
> 

Well said.
Adding decoding support can do no harm.

-- 
   Roberto Ragusa    mail at robertoragusa.it