ao_wasapi: Move non-critical code outside of the event thread

Due to the COM Single-Threaded Apartment model, the thread owning the
objects will still do all the actual method calls (in the form of
message dispatches), but at least this will be COM's problem rather than
having to set up several handles and adding extra code to the event
thread.

Since the event thread still needs to own the WASAPI handles to avoid
waiting on another thread to dispatch the messages, the init and uninit
code still has to run in the thread.

This also removes a broken drain implementation and removes unused
headers from each of the files split from the original ao_wasapi.c.

0 files changed, 0 insertions, 0 deletions