Invalid PNG buffer due to CgBI critical chunk about pixie HOT 5 CLOSED

This might be a project implementing the decompression if someone is inspired to reproduce for pixie:

https://github.com/jakubknejzlik/cgbi-to-png/blob/master/index.js

from pixie.

Sorry, I don't anticipate adding support for this proprietary Apple file format any time soon. PR welcome if you can find some documentation.

from pixie.

@guzba No worries. I probably won't try to implement it in the near term either but I wanted the workaround to be available if someone else happens to run into the issue. I'll go ahead an close this issue out for now. Thanks!

from pixie.

Makes sense. We ran into I think the HEIF file format too. There's a lot of crazy stuff out there for these tiny gains in compression. It makes sense for the giants, but for a couple programmers, trying to implement every imaginable complex format is just not a winning strategy I think. Who knows though, I certainly do not oppose adding more support if we can be sure it's working and done correctly etc.

from pixie.

Yeah, I can't imagine they get much. It seems like it may be zlib compression and they might swap around the color bytes also to match what's native on the iPhone. Maybe I'll take a crack at it at some point.

from pixie.