Support for AAC-ELD as an A2DP codec
Apparently, there is 8 bitratemodes and not 5, with 8 being "Enhanced Low-Delay":
- https://wiki.hydrogenaud.io/index.php?title=Fraunhofer_FDK_AAC#Audio_Object_Types
- https://en.wikipedia.org/wiki/AAC-LD
This should help to match or surpass non-standard "aptX-LL" in alleviating default horrendous bluetooth latency.
Also, LTP and SCA modes should also be supported now in fdk library.