Audio Port Class Functions

This section describes, in alphabetic order, the general functions that the PortCls system driver (portcls.sys) provides. These functions do not belong to any interface. They are used by audio miniport drivers to perform operations of general utility such as registering with the PortCls and installing subdevices.

For a list of which versions of the operating system support the various PortCls functions, see PortCls Support by Operating System.

PortCls implements the following functions:

PcAddAdapterDevice

PcAddContentHandlers

PcCompleteIrp

PcCompletePendingPropertyRequest

PcCreateContentMixed

PcDestroyContent

PcDispatchIrp

PcForwardContentToDeviceObject

PcForwardContentToFileObject

PcForwardContentToInterface

PcForwardIrpSynchronous

PcGetContentRights

PcGetDeviceProperty

PcGetPhysicalDeviceObject

PcGetTimeInterval

PcInitializeAdapterDriver

PcNewDmaChannel

PcNewInterruptSync

PcNewMiniport

PcNewPort

PcNewRegistryKey

PcNewResourceList

PcNewResourceSublist

PcNewServiceGroup

PcRegisterAdapterPowerManagement

PcRegisterIoTimeout

PcRegisterPhysicalConnection

PcRegisterPhysicalConnectionFromExternal

PcRegisterPhysicalConnectionToExternal

PcRegisterSubdevice

PcRequestNewPowerState

PcUnregisterAdapterPowerManagement

PcUnregisterIoTimeout