IMiniportWavePciStream::GetAllocatorFraming method (portcls.h)
The GetAllocatorFraming method gets the preferred allocator-framing parameters for the stream.
Syntax
NTSTATUS GetAllocatorFraming(
[out] PKSALLOCATOR_FRAMING AllocatorFraming
);
Parameters
[out] AllocatorFraming
Pointer to a KSALLOCATOR_FRAMING structure into which the method writes the miniport driver's allocator-framing preferences for this stream.
Return value
GetAllocatorFraming returns STATUS_SUCCESS if the call was successful. Otherwise, the method returns an appropriate error code.
Remarks
The miniport driver should not assume that the actual allocator-framing parameters for the stream match those specified in the GetAllocatorFraming call. The port driver interprets the allocation-framing parameters from the GetAllocatorFraming as the miniport driver's preferences. Other factors might outweigh these preferences, however, when the SysAudio system driver builds the audio filter graph.
See the discussion of allocator framing in WavePci Latency.
Requirements
| Requirement | Value |
|---|---|
| Target Platform | Universal |
| Header | portcls.h (include Portcls.h) |
| IRQL | PASSIVE_LEVEL |