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Custom USB Audio Driver
I'm working with a USB Audio Device that has two analogue channels for input and output, and I want to add some virtual channels. I've installed Blackhole - https://github.com/ExistentialAudio/BlackHole and I can successfully create a virtual device with N virtual channels. What I want to achieve is similar to what I would get creating an aggregate device. I want a single device that incorporates the virtual channels I get from Blackhole with my hardware analogue channels. But the problems with aggregate devices are: They can't be private, so they can be viewed / modified / deleted by a user in Audio MIDI Setup. Both original devices that compose the aggregate device are still listed in the audio preferences (hardware and virtual). I don’t have volume control from the Aggregate Device, and have to control it from the original devices. So the question is: would it be possible to create a custom driver which incorporates what BlackHole does (marshaling virtual channels) while providing the class-compliant hardware channels as a unified device in Audio MIDI Settings?
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Feb ’21