KSPROPERTY_TOPOLOGY_CATEGORIES

The KSPROPERTY_TOPOLOGY_CATEGORIES property queries for the array of functional categories that a driver supports.

Usage Summary Table

Get	Set	Target	Property Descriptor Type	Property Value Type
Yes	No	Filter	KSPROPERTY	KSMULTIPLE_ITEM, followed by a sequence of GUIDs

Remarks

This property returns a KSMULTIPLE_ITEM structure, followed by a sequence of GUIDs representing the possible functional categories the KS filter supports. Microsoft provides standard categories in ks.h and ksmedia.h. The following is a list of the functional categories that are not technology-specific:

Functional category	Description
KSCATEGORY_BRIDGE	Bridge to outside the kernel streaming subsystem.
KSCATEGORY_CAPTURE	Captures.
KSCATEGORY_ COMMUNICATIONSTRANSFORM	Communication transform device.
KSCATEGORY_DATACOMPRESSOR	Compresses a data stream.
KSCATEGORY_DATADECOMPRESSOR	Decompresses a data stream.
KSCATEGORY_DATATRANSFORM	Transforms a data stream.
KSCATEGORY_FILESYSTEM	Moves a data stream into or out of the file system.
KSCATEGORY_INTERFACETRANSFORM	Transforms the interface type being used.
KSCATEGORY_MEDIUMTRANSFORM	Transforms the medium type being used.
KSCATEGORY_MIXER	Mixes multiple data streams.
KSCATEGORY_RENDER	Renderer.
KSCATEGORY_SPLITTER	Splits a data stream.

Topology categories correspond to device interface classes.

Requirements

Header

Ks.h (include Ks.h)

See also

KSTOPOLOGY

KSPROPERTY

KSMULTIPLE_ITEM