StartIO
Tells the stream to start I/O.
Declaration
virtual kern_return_t StartIO(IOUserAudioStartStopFlags in_flags);Parameters
- in_flags:
A
IOUserAudioStartStopFlagto indicate I/O startup behavior.
Return Value
kIOReturnSuccess on success, or another value if an error occurs. For a list of error codes, see Error Codes.
Discussion
The default implementation always returns kIOReturnSuccess.
Subclass and override this method to handle hardware-specific tasks during I/O startup, then call the superclass to update the I/O state. The framework expects this call to always succeed or fail. The hardware can take as long as it needs in this call, provided it always either succeeds or fails.