AudioDeviceIOProc not called after AudioDeviceStart
AudioDeviceIOProc not called after AudioDeviceStart
- Subject: AudioDeviceIOProc not called after AudioDeviceStart
- From: Alain Mazy <email@hidden>
- Date: Thu, 01 Apr 2004 16:07:39 +0200
Here is a piece of code I have to start an audio device (input).
err = AudioDeviceAddPropertyListener(fInputDevice->mID, 0, TRUE,
kAudioDevicePropertyDeviceIsRunning, AudioDeviceIsRunningListenerProc,
NULL);
err = AudioDeviceAddIOProc(fInputDevice->mID,
AudioDeviceSourceInputIOProc, self);
err = AudioDeviceStart(fInputDevice->mID, AudioDeviceSourceInputIOProc);
The PropertyListener callback is called and tells me the device is running
but the AudioDeviceIOProc is never called. I get no error message.
Actually, this piece of code sometimes work and sometimes not. It depends
on what the user has done before. However, the failure/success of this code
does not depend on the creation code or startup code for the AudioDevice
which is always the same.
An here comes the 'funniest' part: if I put a breakpoint on the first line
and then execute the code step by step it ALWAYS work !
So what's the problem ? Timing ? Multi-thread related ? How should I know
since the API tells me that everything is fine ?
Thanks a lot for your help.
Alain.
_______________________________________________
coreaudio-api mailing list | email@hidden
Help/Unsubscribe/Archives:
http://www.lists.apple.com/mailman/listinfo/coreaudio-api
Do not post admin requests to the list. They will be ignored.