Partager via

IConnector::GetType

  • Article
Previous Next

IConnector::GetType

The GetType method gets the type of this connector.

HRESULT GetType(
  ConnectorType  *pType
);

Parameters

pType

[out]  Pointer to a variable into which the method writes the connector type. The connector type is one of the following ConnectorType enumeration constants:

Unknown_Connector

Physical_Internal

Physical_External

Software_IO

Software_Fixed

Network

Return Value

If the method succeeds, it returns S_OK. If it fails, possible return codes include, but are not limited to, the values shown in the following table.

Return code Description
E_POINTER Pointer pType is NULL.

Remarks

A connector corresponds to a "pin" in kernel streaming (KS) terminology. The mapping of KS pins to connectors is as follows:

  • If the KS pin communication type is KSPIN_COMMUNICATION_SINK, KSPIN_COMMUNICATION_SOURCE, or KSPIN_COMMUNICATION_BOTH, then the connector type is Software_IO.
  • Else, if the pin is part of a physical connection between two KS filters (devices) in the same audio adapter or in different audio adapters, then the connector type is Software_Fixed.
  • Else, if the KS pin category is KSNODETYPE_SPEAKER, KSNODETYPE_MICROPHONE, KSNODETYPE_LINE_CONNECTOR, or KSNODETYPE_SPDIF_INTERFACE, the connector type is Physical_External.
  • Else, for a pin that does not meet any of the preceding criteria, the connector type is Physical_Internal.

For more information about KS pins, see the Windows DDK documentation.

For a code example that calls the GetType method, see the implementation of the SelectCaptureDevice function in Device Topologies.

Requirements

Client: Windows Vista

Header: Include Devicetopology.h.

See Also

Previous Next