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CoreAudio AudioQueue callback function never called, no ...
https://stackoverflow.com/questions/19434413/coreaudio-audioqueue-callback-function-never-called-no-errors-reported
In that case you will not hear any more audio for that session. To see why AudioQueues is not playing anything with smaller buffer sizes, I made a test to see if my callback is called at all even when there is no sound. The answer is that the buffers gets called all the time as long as AudioQueues is playing and needs data.
Apple Developer Documentation
https://developer.apple.com/documentation/audiotoolbox/1503207-audioqueuenewoutput
func AudioQueueNewOutput (_ inFormat: Unsafe Pointer < Audio Stream Basic Description >, ... The event loop on which the callback function pointed to by the in Callback Proc parameter is to be called. If you specify NULL, the callback is invoked on …
Apple Developer Documentation
https://developer.apple.com/documentation/audiotoolbox/1501687-audioqueuenewinput
If you specify NULL, the callback is called on one of the audio queue’s internal threads. inCallbackRunLoopMode The run loop mode in which to invoke the callback function specified in the in Callback Proc parameter.
waveOutProc callback function (Windows) | Microsoft Docs
https://docs.microsoft.com/en-us/previous-versions/dd743869(v=vs.85)
Applications should not call any system-defined functions from inside a callback function, except for EnterCriticalSection, LeaveCriticalSection, midiOutLongMsg, midiOutShortMsg, OutputDebugString, PostMessage, PostThreadMessage, SetEvent, timeGetSystemTime, timeGetTime, timeKillEvent, and timeSetEvent. Calling other wave …
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