Hi Andrey,
Thanks for conforming buffer management issue fix.
Regarding the problem in 2-Core , i think even in old HP decoder also we are not updating "extendedError" flag in case of slave core in the library.
The problem for four core hang is, i see from logs group1 master is simply coming from process call, that is because in case master core we are checking for valid input and output buffer pointers, but in 4-Core this check should be done only on group0 master, so now we fixed it and attached the library.
Note that for salve process calls you can pass NULL for input buffer, output buffer and InDecoderArguments as you said.
Can you please check with this new library and let us know if you see any issues ?
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Thanks,
Praveen