PCFILTER_DESCRIPTOR

The PCFILTER_DESCRIPTOR structure describes a miniport driver's implementation of a filter. The structure specifies the filter's pins, nodes, connections, and properties.

typedef struct
{
  ULONG  Version;
  const PCAUTOMATION_TABLE  *AutomationTable;
  ULONG  PinSize;
  ULONG  PinCount;
  const PCPIN_DESCRIPTOR  *Pins;
  ULONG  NodeSize;
  ULONG  NodeCount;
  const PCNODE_DESCRIPTOR  *Nodes;
  ULONG  ConnectionCount;
  const PCCONNECTION_DESCRIPTOR  *Connections;
  ULONG  CategoryCount;
  const GUID *Categories;
} PCFILTER_DESCRIPTOR, *PPCFILTER_DESCRIPTOR;

Members

Version: Reserved. Initialize to zero.
AutomationTable: Pointer to the automation table. This is a structure of type PCAUTOMATION_TABLE.
PinSize: Specifies the size in bytes of each element in the Pins array. This value should be a multiple of eight and should be at least sizeof(PCPIN_DESCRIPTOR). Larger values allow client-specific descriptor information to be appended to pin descriptors.
PinCount: Specifies the number of pin descriptors in the Pins array.
Pins: Pointer to the array of pin descriptors. Each array element is a PCPIN_DESCRIPTOR structure.
NodeSize: Specifies the size in bytes of each element in the Nodes array. This value should be a multiple of eight and should be at least sizeof(PCNODE_DESCRIPTOR). Larger values allow client-specific descriptor information to be appended to node descriptors.
NodeCount: Specifies the number of node descriptors in the Nodes array.
Nodes: Pointer to the array of node descriptors. Each array element is a PCNODE_DESCRIPTOR structure.
ConnectionCount: Specifies the number of connections in the Connections array.
Connections: Pointer to the array of connections descriptors. Each array element is a PCCONNECTION_DESCRIPTOR structure.
CategoryCount: Specifies the number of GUIDs in the Categories array.
Categories: Pointer to the array of GUIDs that specifies the categories that the object belongs to. See the discussion of topology categories in Installing Device Interfaces for an Audio Adapter.

Comments

The IMiniport::GetDescription method returns a pointer to a PCFILTER_DESCRIPTOR structure that describes the miniport driver's pins, nodes, connections, and properties.

PCFILTER_DESCRIPTOR

Members

Comments

See Also