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ruby193-rubygem-chunky_png - Pure ruby library for read/write, chunk-level access to PNG files
- Description:
This pure Ruby library can read and write PNG images without depending on
an external image library, like RMagick. It tries to be memory efficient
and reasonably fast.
It supports reading and writing all PNG variants that are defined in the
specification, with one limitation: only 8-bit color depth is supported.
It supports all transparency, interlacing and filtering options the PNG
specifications allows. It can also read and write textual metadata from
PNG files. Low-level read/write access to PNG chunks is also possible.
This library supports simple drawing on the image canvas and simple
operations like alpha composition and cropping. Finally, it can import
from and export to RMagick for interoperability.
Also, have a look at OilyPNG at http://github.com/wvanbergen/oily_png.
OilyPNG is a drop in mixin module that implements some of the ChunkyPNG
algorithms in C, which provides a massive speed boost to encoding and decoding.
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