Johann C. Rocholl wrote: > I'm working on simple module to write PNG image files in pure python. > Adding it to the standard library would be useful for people who want > to create images on web server installations without gd and imlib, or > on platforms where the netpbm tools are not easily available. > > Does anybody find this idea interesting? > Does anybody think it could go into stdlib before the feature freeze for 2.5? > > +1
Michael Foord > The module consists of only one file. It imports only sys, zlib, > struct (maybe re for testing). > Some benchmarks for comparison with the pnmtopng program (from > netpbm), encoding a plain RGB file with 24 bits per pixel, input file > size 11520017 bytes (11M), measured with the 'time' command, including > Python interpreter start-up: > pnmtopng png.py > straight encoding 1.31 seconds 0.72 seconds > resulting file size 342953 bytes 292885 bytes > interlaced encoding 3.78 seconds 4.88 seconds > resulting file size 422441 bytes 346872 bytes > > The source code of the module lives here: > http://svn.browsershots.org/trunk/shotfactory/lib/image/png.py > http://trac.browsershots.org/browser/trunk/shotfactory/lib/image/png.py > > I am willing to maintain the module for 5+ years, as it is a small but > important part of my main project. I am also willing to write latex > documentation and tests for the module, and I think I could do that > within the next three days. The module is licensed under the Apache > License 2.0, and I am ready to sign a contributor agreement for the > PSF. > > I will probably add support for more different PNG formats, especially > alpha channel transparency, and then maybe color palettes. I don't > plan to add PNG decoding because it would make the module much larger > and rather complex. > > Sorry if this contribution seems brash. Perhaps it is easy enough to > download and deploy my module separately. But I thought that if there > is a chance to get it in before beta1, I should not hesitate and just > ask. > > Cheers, > Johann > _______________________________________________ > Python-Dev mailing list > Python-Dev@python.org > http://mail.python.org/mailman/listinfo/python-dev > Unsubscribe: > http://mail.python.org/mailman/options/python-dev/fuzzyman%40voidspace.org.uk > > _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com