KSMETHOD_STREAMALLOCATOR_ALLOC

  • Article

The KSMETHOD_STREAMALLOCATOR_ALLOC method is used by a client to allocate a frame from the given allocator. The method returns STATUS_PENDING if no frames are currently available. Otherwise, the method returns a pointer to a frame.

For example, a kernel-mode client could use the following sample code to allocate a frame:

Remarks

Method.Identifier.Set = KSMETHODSETID_StreamAllocator;
Method.Identifier.Id = KSMETHOD_STREAMALLOCATOR_ALLOC;
Method.Flags = KSMETHOD_TYPE_WRITE;
DeviceIoControl(
    AllocatorHandle,
    IOCTL_KS_METHOD,
    &Method,
    sizeof(KSMETHOD),
    &Frame,
    sizeof(PVOID),
    &BytesReturned,
    &Overlapped);