Note
Access to this page requires authorization. You can try signing in or changing directories.
Access to this page requires authorization. You can try changing directories.
The KsDecrementPendingIoCount method decrements the number of input/output (I/O) operations that are in progress on a pin.
Syntax
LONG KsDecrementPendingIoCount();
Return value
Returns an integer from 0 to n, the value that represents the new number of I/O operations that are in progress.
Remarks
The KsDecrementPendingIoCount method is typically called from within an interface handler as described in the following sequence:
- The proxy creates an instance of an interface handler (IKsInterfaceHandler) to handle a particular media type.
- A client calls the IKsInterfaceHandler::KsSetPin method to inform that interface handler about the pin with which to communicate when passing data.
- The client calls the IKsInterfaceHandler::KsProcessMediaSamples method to move samples from or to the assigned pin. KsProcessMediaSamples performs I/O operations and for each I/O operation, calls IKsPin::KsIncrementPendingIoCount to increment the I/O count.
- The client calls the IKsInterfaceHandler::KsCompleteIo method to complete an I/O operation. KsCompleteIo calls KsDecrementPendingIoCount to decrement the I/O count.
Requirements
| Requirement | Value |
|---|---|
| Target Platform | Desktop |
| Header | ksproxy.h (include Ksproxy.h) |
See also
IKsInterfaceHandler::KsCompleteIo