Apple

I have an AudioUnit running and in its callback routine I have a call to AudioUnitFillComplexBuffer ()

The parameters being supplied to the call to AudioUnitFillComplexBuffer are

AudioUnitFillComplexBuffer (sConverter, ACComplexInputProc, inUserData, &inNumFrames, ioData, outDescription);

The values for the parameters are

sConverter - a valid converter

ACComplexInputProc – it’s a function pointer

inUserData = NULL

inNumFrames = 512

ioData = a ptr to an AudioBufferList where mNumberBuffers == 1;

outDescription = NULL;

When the application starts, when I call AudioUnitFillComplexBuffer I get ~ 2 successful calls to my callback ACComplexInputProc and since I don’t

Have any valid audio data at the time, I set

ioData->mBuffers[0].mData = NULL;

ioData->mBuffers[0].mDataByteSize = 0;

and

return (noErr);

after the ~2 successful calls through AudioUnitFillComplexBuffer, it stops calling through to my specified callback (ACComplexInputProc), but still returns noErr.

Does anyone know what’s up here? My AudioUnit is still running, requesting data, but my audio converter just quits responding.

Any help would be GREATLY appreciated!!!!!

-Stephen

p.s. is there any routine to check the status of an audio converter?