John McIntosh writes:
>FYI the tiff library plugin I did has zlib enclosed to support zip
>Tiffs. The interface to zlib seems simple to do and may buy some
>performance gains.

Yea, perhaps we can leverage some of that.  This thing I want to avoid,
however, is the need to be file-only.  The PNG reader currently uses
Streams, and without a mechanism for call-backs into Squeak, they're tough
to accelerate.

-- Duane