ao_coreaudio_exclusive: make property listeners event-based

In short, instead of letting the coreaudio property listener set atomic
flags (which are then polled), make the property listeners actually
active.

The format change listener used during audio output now simply calls
ao_request_reload() on its own. All code involved is thread-safe, so
there's no need to do it during this audio callback (we assumed the
callback was never run concurrently with itself).

The listener installed temporarily during ca_change_format() is changed
to post a semaphore. Get rid of the weird retry logic and replace it
with a flat loop + timeout. It appears the maximum wait time could be
2500ms; reduce the total timeout to 500ms instead.

0 files changed, 0 insertions, 0 deletions