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The client uses the KSPROPERTY_PIN_GLOBALCINSTANCES to determine the current number of pins instantiated by a pin factory, as well as the maximum number of pins this pin factory can instantiate. This property is optional.
Usage Summary Table
| Get | Set | Target | Property Descriptor Type | Property Value Type |
|---|---|---|---|---|
| Yes | No | Pin | KSP_PIN | KSPIN_CINSTANCES |
Remarks
Specify this property using KSP_PIN, where the PinId member specifies the pin factory.
KSPIN_CINSTANCES is a data structure of the form:
typedef struct {
ULONG PossibleCount;
ULONG CurrentCount;
} KSPIN_CINSTANCES;
The following is a description of each member of the KSPIN_CINSTANCES structure.
PossibleCount
Specifies the maximum number of pin the pin factory can instantiate on the driver, or KSINTANCE_INDETERMINATE if there is no maximum.
CurrentCount
Specifies the current number of pins the pin factory has instantiated on the driver.
The class driver does not handle this property; the stream minidriver must provide handling on its own.
KSPROPERTY_PIN_GLOBALCINSTANCES specifies the absolute current and maximum number of instances, over all instances of the filter. To determine per-filter values, use KSPROPERTY_PIN_CINSTANCES.
Requirements
Header: ks.h (include Ks.h)