C Api: Missing microphone monitoring functions

SDK Bug Reports
1

The LUA Api includes these functions

playdate.sound.micinput.startListening()
playdate.sound.micinput.stopListening()

I can see no equivalent in the C Api.

2

The callback passed to playdate->sound->setMicCallback() is never being called. Based on other older posts that I see, this is perhaps because I haven't called startListening()? Though I can't since it doesn't exist at the moment?