HW_STREAM_DESCRIPTOR structure (strmini.h)
The minidriver uses the HW_STREAM_DESCRIPTOR structure to return stream information to the stream class driver.
Syntax
typedef struct _HW_STREAM_DESCRIPTOR {
HW_STREAM_HEADER StreamHeader;
HW_STREAM_INFORMATION StreamInfo;
} HW_STREAM_DESCRIPTOR, *PHW_STREAM_DESCRIPTOR;
Members
StreamHeader
Contains the HW_STREAM_HEADER for the stream descriptor.
StreamInfo
Contains the HW_STREAM_INFORMATION block for the zero stream.
Remarks
The minidriver returns this structure to the class driver in response to a SRB_GET_STREAM_INFO request. The class driver makes this request by calling the minidriver's StrMiniReceiveDevicePacket routine.
The class driver expects HW_STREAM_DESCRIPTOR to be laid out in memory as an HW_STREAM_HEADER followed by an array of HW_STREAM_INFORMATION structures. The array begins at the address of the StreamInfo member. The HW_STREAM_HEADER's NumberOfStreams member indicates the number of entries in the array. The minidriver uses HW_STREAM_HEADER to describe those kernel streaming properties of the driver as a whole, while each HW_STREAM_INFORMATION structure describes each individual stream the device supports.
Requirements
| Requirement | Value |
|---|---|
| Header | strmini.h (include Strmini.h) |