PNG image en- and de-coders.. 2020 update

[aberba]

On Tuesday, 11 August 2020 at 18:29:28 UTC, Andy Balba wrote:
> Found this 2012 Forum post : 
> https://forum.dlang.org/post/jrklsj$2lt9$1@digitalmars.com
> and thought that D-folks interested in this topic may find an 
> "update" helpful.
>
> [...]

Recommended to someone and it was well liked. Thanks for doing 
this.

It seems getting image dimensions for .gif files isn't supported 
though. Or is it that .gif files aren't supported at all?

>   // format specific functions
>   PNG_Header hdr = read_png_header("peruna.png");
>   IFImage i3 = read_jpeg("porkkana.jpg");
>   write_tga("porkkana.tga", i3.w, i3.h, i3.pixels);