KSSTREAM_POINTER结构体

struct _KSPSTREAM_POINTER {
    LIST_ENTRY ListEntry;//挂入CKsQueue::m_StreamPointers
    LIST_ENTRY TimeoutListEntry;
    LONGLONG TimeoutTime;
    PFNKSSTREAMPOINTER CancelCallback;
    PFNKSSTREAMPOINTER TimeoutCallback;
    KSPSTREAM_POINTER_STATE State;
    KSPSTREAM_POINTER_TYPE Type;
    ULONG Stride;
    PIKSQUEUE Queue;
    PKSPFRAME_HEADER FrameHeader;
    PKSPFRAME_HEADER FrameHeaderStarted;
    KSSTREAM_POINTER Public;
};

• State

  typedef enum {
    KSPSTREAM_POINTER_STATE_UNLOCKED,
    KSPSTREAM_POINTER_STATE_LOCKED,
    KSPSTREAM_POINTER_STATE_CANCELLED,
    KSPSTREAM_POINTER_STATE_DELETED,
    KSPSTREAM_POINTER_STATE_CANCEL_PENDING,
    KSPSTREAM_POINTER_STATE_DEAD,
    KSPSTREAM_POINTER_STATE_TIMED_OUT,
    KSPSTREAM_POINTER_STATE_TIMER_RESCHEDULE
  } KSPSTREAM_POINTER_STATE;
  

• FrameHeader/FrameHeaderStarted
  ```
  typedef struct KSPIRPFRAMING
  {
  ULONG OutputBufferLength;
  LONG RefCount; //引用计数
  LONG QueuedFrameHeaderCount;
  PKSPFRAME_HEADER FrameHeaders;
  } KSPIRP_FRAMING, *PKSPIRP_FRAMING;

struct _KSPFRAME_HEADER
{
LIST_ENTRY ListEntry;
PKSPFRAME_HEADER NextFrameHeaderInIrp;
PVOID Queue;
PIRP OriginalIrp;
PMDL Mdl;
PIRP Irp;
PKSPIRP_FRAMING IrpFraming;
PKSSTREAM_HEADER StreamHeader;
PVOID FrameBuffer;
PKSPMAPPINGS_TABLE MappingsTable;
ULONG StreamHeaderSize;
ULONG FrameBufferSize;
PVOID Context;
LONG RefCount;
PVOID OriginalData;
NTSTATUS Status;
BOOLEAN DismissalCall;
KSPFRAME_HEADER_TYPE Type;
PKSPSTREAM_POINTER FrameHolder;
//PKSPFRAME_HEADER ParentFrameHeader;
//PKSSPLITPIN SplitPins;
//ULONG ChildrenOut;
};

- Public

struct _KSSTREAM_POINTER
{
PVOID Context;
PKSPIN Pin;
PKSSTREAM_HEADER StreamHeader;
PKSSTREAM_POINTER_OFFSET Offset;
KSSTREAM_POINTER_OFFSET OffsetIn;
KSSTREAM_POINTER_OFFSET OffsetOut;
};
```