ojph_expand error/warning behaviour with quality layer placeholder passes about openjph HOT 1 OPEN

Hi Mike,

Thank you for the detailed report.

Currently, the precinct parser can only parse simple one-layer HT codestreams; there are no specific paths that detect other cases, let alone handle them. That's why the message can be different depending on where the code hits a problem; the code interprets the packet header incorrectly, and then try to decode with this wrong interpretation.

The code needs to interpret the data correctly before we can have consistent messaging.

If I understand things correctly, there are at least two cases that needs to be handled: multi-ht sets, placeholders passes.

I think the next step should be passing the conformance test -- passing these should address most of the concerns in this issue.

Kind regards,
Aous.

from openjph.