Encode RAW byte stream to PNG

[mackode]

Hi,

Thanks for a great library. I have the following scenario to implement;

I would like to encode to PNG a set of rectangular chunks of RAW rgb8 Data on iOS.
I already tried to implement it basing on basic encoding, but it requires (if I understand correctly) the whole raw data to be present before.
The problem is that raw data is huge. Much more than can be read into memory at once.

Can you help me with pointing some path I should go?

Best Regards