IIRC, the AudioObject* APIs replaced AudioHardware* some time ago. It’s been a
while since I’ve done anything that uses them, but I did notice this in the
last version of the Learning Core Audio sample code that I uploaded as errata:
// AudioHardwareGetProperty() is deprecated
// CheckError
(AudioHardwareGetProperty(kAudioHardwarePropertyDefaultInputDevice,
//
&propertySize,
//
&defaultDevice),
// "Couldn't get default input device");
// AudioObjectProperty stuff new in 10.6, replaces
AudioHardwareGetProperty() call
// TODO: need to update ch08 to explain, use this call. need
CoreAudio.framework
AudioObjectPropertyAddress defaultDeviceProperty;
defaultDeviceProperty.mSelector =
kAudioHardwarePropertyDefaultInputDevice;
defaultDeviceProperty.mScope = kAudioObjectPropertyScopeGlobal;
defaultDeviceProperty.mElement = kAudioObjectPropertyElementMaster;
CheckError (AudioObjectGetPropertyData(kAudioObjectSystemObject,
&defaultDeviceProperty,
0,
NULL,
&propertySize,
&defaultDevice),
"Couldn't get default input device");
Also, calling AudioObject from Swift will work just as well/poorly as
AudioHardware. Any C function in a public API can be called from Swift just
fine… it’s just highly unintuitive Swift since it uses lots of inout and free
functions and UnsafeMutableRawPointerWillKillYouInYourSleep and all that.
Hopefully that’ll at least get you pointed in the right direction. Sorry the
docs aren’t better.
—Chris
> On Jul 13, 2017, at 8:13 PM, Rick Mann <[email protected]> wrote:
>
> Apple's docs are sorely lacking. A whole suite of APIs is deprecated, with no
> indication of what to use in their stead, and no accessibility from Swift:
>
> https://developer.apple.com/documentation/coreaudio/1580716-audiohardwaregetpropertyinfo
>
> What's the replacement set of APIs for switching the current audio input on
> macOS?
>
> Thanks,
>
> --
> Rick Mann
> [email protected]
>
>
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