IMiniportWavePciStream::NormalizePhysicalPosition method (portcls.h)

The NormalizePhysicalPosition method converts a physical buffer position to a time-based value.

Syntax

NTSTATUS NormalizePhysicalPosition(
  [in, out] PLONGLONG PhysicalPosition
);

Parameters

[in, out] PhysicalPosition

Pointer to a caller-allocated buffer that contains either the physical position or time-based value. On entry, this buffer contains the physical-position value that is to be converted. On return, the buffer contains the converted value, which is time-based.

Return value

NormalizePhysicalPosition returns STATUS_SUCCESS if the call was successful. Otherwise, the method returns an appropriate error code.

Remarks

Given a physical position based on the actual number of bytes transferred, the NormalizePhysicalPosition method converts the position to a time-based value that is expressed in 100-nanosecond units.

Requirements