The following table lists the topology categories that audio adapters are most likely to use to describe the capabilities of their subdevices. In the kernel-streaming architecture, topology categories (see KSPROPERTY_TOPOLOGY_CATEGORIES) represent device interface classes. For each device interface, the INF file specifies a FriendlyName entry value, which is accessible in user mode, under the interface's registry key. The device interfaces specified in the INF file have a one-to-one correspondence with the subdevices that the adapter driver creates when it initializes the device (see Subdevice Creation).
Installing Device Interfaces for an Audio AdapterĪ client accesses an audio device through a set of device interfaces that a vendor specifies in the adapter's INF file.
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