cpal 0.12 macOS stream callback isn't executed when winit event loop is running

[slmjkdbtl]

In 0.12 the stream callback is only executed if I call thread::sleep() or loop {} after stream.play(), it doesn't get called if I spawn a winit window after. I had no problem with 0.11 when I spawn my own audio thread.

Minimal example (modified from beep example): https://gist.github.com/slmjkdbtl/61aab267bae59907ada0d6296682a40d Currently can't test on other platforms so not sure if I'm just doing it wrong

[curlywurlycraig]

Your gist isn't accessible to me. FWIW I'm on MacOS and found this issue when searching because I was seeing something similar, but then I realised that because stream.play() is non-blocking, my thread was terminating. I think that's expected though.

[slmjkdbtl]

@curlywurlycraig Sorry I accidentally deleted the code yesterday. In my case application / windowing main loop is blocking the main thread after I call stream.play(). I remember it's something like

stream.play();
while (true) {} // this blocks and works

stream.play();
start_winit_main_loop(); // this blocks but doesn't work

[curlywurlycraig]

I'm afraid I can't help then. My issue was just that I wasn't blocking the main thread.

[slmjkdbtl]

@curlywurlycraig NP. Thanks for replying. (I'm not even sure if this problem still exists, haven't tried in some time and there're updates to both libs)