It’s not you, it’s them. You can send as many notifications as you want, but it
won’t do anything if nobody is listening for them.
-Ed
P.S. You can use the notification view in HALLab.app to see if you’re actually
sending them correctly.
> On Apr 14, 2021, at 12:19 PM, Bertrand Van Kempen via Coreaudio-api
> <coreaudio-api@lists.apple.com> wrote:
>
> Hello CoreAudio community,
>
>
> I would like to notify the applications/HAL when the channels' name of my
> CoreAudio HAL plugin has changed.
>
> I try to do it the same way which works for the controls but no success;
> Audio MIDI Setup doesn't update the channels' name.
>
>
> Note: Applications only update the names when the number of channels has
> changed.
>
>
>
> I tries this:
>
> CADispatchQueue::GetGlobalSerialQueue().Dispatch(false, ^{
>
> AudioObjectPropertyAddress theChangedProperties[] = { {
> kAudioObjectPropertyElementName, kAudioObjectPropertyScopeInput,
> kAudioObjectPropertyElementWildcard }, { kAudioObjectPropertyElementName,
> kAudioObjectPropertyScopeOutput, kAudioObjectPropertyElementWildcard } };
>
> SA_PlugIn::Host_PropertiesChanged(m_SA_Device.GetObjectID(), 2,
> theChangedProperties);
>
> });
>
>
>
> Is someone know how I should do to notify applications/HAL that the channels'
> name has changed?
>
>
> I also noticed that Logic Pro seems to not care about channels' name; I mean
> it doesn't display the name provided by theplugin.
>
> But Reaper properly display them.
>
>
>
> Thanks a lot for your help,
>
> Bertrand
>
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