[FFmpeg-devel] libopusdec: Enable FEC/PLC

[Philip-Dylan Gleonec]

Hello,

Please find attached a rebased patchset for the FEC implementation of
libopus. Following the received feedbacks, some improvements have been
done compared to the first version:
- remove a log when a packet is decoded without FEC 
- add a check to only set libopus encoder packet loss estimate if it
  has not changed since previous encoding

Both patches have passed FATE testing successfully. Moreover, the patch
on libopus decoder is used in production in GNU Jami.

Thanks for your time.