StreamClassDeviceNotification function (strmini.h)
Minidrivers use the StreamClassDeviceNotification routine to notify the class driver that it has completed a stream request, or that an event has occurred.
Syntax
void StreamClassDeviceNotification(
[in] STREAM_MINIDRIVER_DEVICE_NOTIFICATION_TYPE NotificationType,
[in] PVOID HwDeviceExtension,
...
);
Parameters
[in] NotificationType
This is an enumeration value that contains the type of notification that the minidriver is sending.
DeviceRequestComplete
Indicates that the minidriver has completed its handling of the device stream request block. Once the minidriver calls StreamClassDeviceNotification with this value, the relevant SRB is owned by the class driver, which is free to deallocate it.
ReadyForNextDeviceRequest
Indicates that the minidriver is ready to receive another device request.
SignalDeviceEvent
Signals that the event specified by an optional parameter has occurred.
SignalMultipleDeviceEvents
Signals all events that match the criteria specified in optional parameters.
DeleteDeviceEvent
Deletes the event specified by an optional parameter.
[in] HwDeviceExtension
Pointer to the minidriver's device extension. The minidriver specifies the size of this buffer in the HW_INITIALIZATION_DATA structure it passes when it registers itself via StreamClassRegisterMinidriver. The class driver then passes pointers to the buffer in the HwDeviceExtension member of the HW_STREAM_REQUEST_BLOCK, HW_STREAM_OBJECT, HW_TIME_CONTEXT, and PORT_CONFIGURATION_INFORMATION structures it passes to the minidriver.
...
Return value
None
Remarks
The minidriver uses this routine for requests or events that apply to the minidriver as a whole. Stream-specific requests or events use StreamClassStreamNotification.
Requirements
| Requirement | Value |
|---|---|
| Target Platform | Desktop |
| Header | strmini.h (include Strmini.h) |
| Library | Stream.lib |