MMixerGetControlTypeFromTopologyNode MMixerGetFilterPinCount MMixerGetFilterTopologyProperty MMixerGetPhysicalConnection MMixerGetPinInstanceCount MMixerSetGetControlDetails

ULONG MMixerGetPinInstanceCount ( PMIXER_CONTEXT  MixerContext, HANDLE  hFilter, ULONG  PinId  ) Definition at line 263 of file filter.c. { KSP_PIN PinRequest; KSPIN_CINSTANCES PinInstances; ULONG BytesReturned; MIXER_STATUS Status; /* query the instance count */ PinRequest.Reserved = 0; PinRequest.PinId = PinId; PinRequest.Property.Set = KSPROPSETID_Pin; PinRequest.Property.Flags = KSPROPERTY_TYPE_GET; PinRequest.Property.Id = KSPROPERTY_PIN_CINSTANCES; Status = MixerContext->Control(hFilter, IOCTL_KS_PROPERTY, (PVOID)&PinRequest, sizeof(KSP_PIN), (PVOID)&PinInstances, sizeof(KSPIN_CINSTANCES), &BytesReturned); ASSERT(Status == MM_STATUS_SUCCESS); return PinInstances.CurrentCount; }