KSPROPERTY_PIN_COMMUNICATION
The KSPROPERTY_PIN_COMMUNICATION property specifies the direction of IRP flow on pins instantiated by the pin factory.
Usage Summary Table
| Get | Set | Target | Property Descriptor Type | Property Value Type |
|---|---|---|---|---|
|
Yes |
No |
Pin |
KSPIN_COMMUNICATION |
Remarks
The KS filter returns one of the following values, which specifies the communication direction of a pin instantiated by this pin factory:
- KSPIN_COMMUNICATION_NONE
-
The pin factory does not instantiate any pins.
- KSPIN_COMMUNICATION_SINK
-
The pin factory instantiates IRP sink pins. Such pins can only be connected to IRP source pins.
- KSPIN_COMMUNICATION_SOURCE
-
The pin factory instantiates IRP source pins. Such pins can only be connected to IRP sink pins.
- KSPIN_COMMUNICATION_BOTH
-
The pin factory instantiates pins that are both IRP sinks and IRP sources.
- KSPIN_COMMUNICATION_BRIDGE
-
This pin cannot connect to other pins, but instances can be created on it to receive non-KS I/O requests.
Source pins send IRPs to sink pins. A source pin may read or write data, and a sink pin may have data read to it or written from it. For more information, see KSPROPERTY_PIN_DATAFLOW.
Stream minidrivers do not need to handle this property directly; the stream class driver handles this property using Stream Request Blocks to query for more information where necessary.
Requirements
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Header |
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See also
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Build date: 1/22/2014
