How to find out licensed codecs

Is there any way of finding out which codecs are licensed?

I tried setting all codecs with a GCSET_CHAN_CAPABILITY/ IPPARM_LOCAL_CAPABILITY parameter block to gc_SetConfigData and check the return value, but gc_SetConfigData will gladly accept unlicensed codecs and HMP will fail miserably later on calls.

So how can I find out which codecs are REALLY available.