| |
| # png.py - PNG encoder/decoder in pure Python |
| # |
| # Copyright (C) 2006 Johann C. Rocholl <johann@browsershots.org> |
| # Portions Copyright (C) 2009 David Jones <drj@pobox.com> |
| # And probably portions Copyright (C) 2006 Nicko van Someren <nicko@nicko.org> |
| # |
| # Original concept by Johann C. Rocholl. |
| # |
| # LICENSE (The MIT License) |
| # |
| # Permission is hereby granted, free of charge, to any person |
| # obtaining a copy of this software and associated documentation files |
| # (the "Software"), to deal in the Software without restriction, |
| # including without limitation the rights to use, copy, modify, merge, |
| # publish, distribute, sublicense, and/or sell copies of the Software, |
| # and to permit persons to whom the Software is furnished to do so, |
| # subject to the following conditions: |
| # |
| # The above copyright notice and this permission notice shall be |
| # included in all copies or substantial portions of the Software. |
| # |
| # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| # EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| # MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
| # BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| # ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| # CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| # SOFTWARE. |
| # |
| # Changelog (recent first): |
| # 2009-03-11 David: interlaced bit depth < 8 (writing). |
| # 2009-03-10 David: interlaced bit depth < 8 (reading). |
| # 2009-03-04 David: Flat and Boxed pixel formats. |
| # 2009-02-26 David: Palette support (writing). |
| # 2009-02-23 David: Bit-depths < 8; better PNM support. |
| # 2006-06-17 Nicko: Reworked into a class, faster interlacing. |
| # 2006-06-17 Johann: Very simple prototype PNG decoder. |
| # 2006-06-17 Nicko: Test suite with various image generators. |
| # 2006-06-17 Nicko: Alpha-channel, grey-scale, 16-bit/plane support. |
| # 2006-06-15 Johann: Scanline iterator interface for large input files. |
| # 2006-06-09 Johann: Very simple prototype PNG encoder. |
| |
| # Incorporated into Bangai-O Development Tools by drj on 2009-02-11 from |
| # http://trac.browsershots.org/browser/trunk/pypng/lib/png.py?rev=2885 |
| |
| # Incorporated into pypng by drj on 2009-03-12 from |
| # //depot/prj/bangaio/master/code/png.py#67 |
