Modified the mel_init code to replace the assert statement with an if statement, returning false when an incorrect sequence of bytes are encountered in the MEL segment. Similar code should be added to the main MEL decoding subrountine, but the change is more involved; in any case, an incorrect sequence produces incorrect results, but should not be harmful or cause a crash.
There are a few limitations:
- mixed mode (HT and regular code blocks) is not supported.
- ROI in HT blocks is not supported.
- Placeholder passes are not supported.
- MultiHT sets are not support, only a singleHT set.
- there are known issues with some compliance testing files related to
the parsing of packet header.
Aous Naman
Yuan
Alexander Neumann
Stefan Weil
Even Rouault