SwiftPNG

Pure-Swift implementation of PNG file encoding and decoding

WIP: implements some encoding and decoding and algorithms, for some bit depths.

PNG file format spec: http://www.libpng.org/pub/png/spec/1.2/PNG-Contents.html

Decoding

let pngFileData:Data = ....

let image = SampledImage(pngData: pngFileData)

Encoding

let image:SampledImage = ...

let pngFileData:Data? = image.pngData