Adds an output to the sound engine. Use this to add controller-attached headphones, controller speakers, DVR output, etc.
Like most functions of AK::SoundEngine, AddOutput is asynchronous. A successful return code merely indicates that the request is properly queued. Error codes returned by this function indicate various invalid parameters. To know if this function succeeds or not, and the failure code, register an AkDeviceStatusCallbackFunc callback with RegisterAudioDeviceStatusCallback.
The following codes are returned from the callback.