Re: [libpng:feature-requests] #32 Modern compressor

Year ago there was discussion about PNG-2.0....

As new compression method will break compatibility it should be part of 
this.

I proposed LZMA and ZPAQ, we may discuss other (and other 2.0 features).



30.12.2016 21:52, Glenn Randers-Pehrson пишет:
> This was posed as a libpng feature request but it's actually a
> PNG format feature request.  It would require defining a new
> value for the IHDR "compression method" byte.
>
> It's debatable whether the speed and compression improvements
> would outweigh the fact that all existing decoders would need
> to be rebuilt with a new libpng that is able to decode the
> new method.
>
> Glenn
>
>
> On Fri, Dec 30, 2016 at 1:46 PM, Glenn Randers-Pehrson 
> <[email protected] <mailto:[email protected]>> wrote:
>
>
>     ---------- Forwarded message ----------
>     From: *Richard Steffen* <[email protected]
>     <mailto:[email protected]>>
>     Date: Fri, Dec 30, 2016 at 1:12 PM
>     Subject: [libpng:feature-requests] #32 Modern compressor
>     To: Ticket 32 <32-69Dn6CiKw8dRzlJ4WzdrO/7NY9V6kczhnfyn/aX49Q/[email protected]
>     <mailto:32-69Dn6CiKw8dRzlJ4WzdrO/7NY9V6kczhnfyn/aX49Q/[email protected]>>
>
>     ** [feature-requests:#32] Modern compressor**
>     **Created:** Fri Dec 30, 2016 06:12 PM UTC by Richard Steffen
>     **Last Updated:** Fri Dec 30, 2016 06:12 PM UTC
>
>
>     Replace the old and slow zlib compressor by a new fast one like
>     lz4 or brotli.
>     Speed and compression ratio matters.
>     The PNG format has a flag to choose the compressor already.
>
>     See <https://sourceforge.net/p/libpng/feature-requests/32/
>     <https://sourceforge.net/p/libpng/feature-requests/32/>>
>
>
>
>
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