Here’s a more concrete proposal. It’s about 90% Python, with 10% pseudocode in comments.
It’s in one file for now to ease browsing - I’ll split it to modules in the actual implementation. I zipped the .py because the forum does not allow posting .py files.
Currently this contains a Filter interface, a couple of simple example filters trying to cover as much of Filter API use cases as possible, and a work-in-progress FilterStage.
FilterPipeline and CommonFilters are currently covered just by a few lines of comments.
Comments welcome.
filterinterface_proposal.zip (8.56 KB)