Apple

Hello all,

I’m new to Leopard development and found issues with capturing data directly from the mic. My application creates an IOProc for the input device to use it for capturing purposes so that I can feed it back to the output device which is the sound system in this case.

So the IOProc for capture has the following signature:

static OSStatus gviHardwareCaptureIOProc(AudioDeviceID inDevice,

const AudioTimeStamp * inNow,

const AudioBufferList * inInputData,

const AudioTimeStamp * inInputTime,

AudioBufferList * outOutputData,

const AudioTimeStamp * inOutputTime,

void * inClientData)

How can I tell if the device is in some kind of error state or why the parameter inInputData does not have any data for me to capture?

Thanks,

------------------------

Saad Nader

Middleware Engineer