Encoder for generating a image out of a png stream.
At the moment the following features are supported:
Filters: all filters are supported.
Pixel formats:RGB (Truecolor) with alpha (8 bit).RGB (Truecolor) without alpha (8 bit).Greyscale with alpha (8 bit).Greyscale without alpha (8 bit).Palette Index with alpha (8 bit).Palette Index without alpha (8 bit).