diff --git a/reactos/include/dxsdk/bdamedia.h b/reactos/include/dxsdk/bdamedia.h
index ccebd94e1c2..84f1e212aed 100644
--- a/reactos/include/dxsdk/bdamedia.h
+++ b/reactos/include/dxsdk/bdamedia.h
@@ -1,4 +1,5 @@
-
+#ifndef BDAMEDIA_H__
+#define BDAMEDIA_H__
 
 typedef struct _KSP_BDA_NODE_PIN {
     KSPROPERTY Property;
@@ -6,3 +7,5 @@ typedef struct _KSP_BDA_NODE_PIN {
     ULONG ulInputPinId;
     ULONG ulOutputPinId;
 } KSP_BDA_NODE_PIN, *PKSP_BDA_NODE_PIN;
+
+#endif
diff --git a/reactos/include/dxsdk/bdatypes.h b/reactos/include/dxsdk/bdatypes.h
index 3a979efe42e..6220d8527d9 100644
--- a/reactos/include/dxsdk/bdatypes.h
+++ b/reactos/include/dxsdk/bdatypes.h
@@ -163,7 +163,16 @@ typedef struct
 } PID_MAP ;
 
 
-
+typedef struct _KSM_PIN
+{
+    KSMETHOD    Method;
+    union
+    {
+        ULONG       PinId;
+        ULONG       PinType;
+    };
+    ULONG       Reserved;
+} KSM_PIN, * PKSM_PIN;
 
 
 typedef struct _BDA_PID_MAP
diff --git a/reactos/include/psdk/ks.h b/reactos/include/psdk/ks.h
index 0fb701d92dc..5c9ac50834d 100644
--- a/reactos/include/psdk/ks.h
+++ b/reactos/include/psdk/ks.h
@@ -3699,6 +3699,22 @@ KsCreateFilterFactory(
     IN  PFNKSFILTERFACTORYPOWER WakeCallback OPTIONAL,
     OUT PKSFILTERFACTORY *FilterFactory OPTIONAL);
 
+KSDDKAPI
+NTSTATUS
+NTAPI
+KsFilterFactoryUpdateCacheData(
+    IN PKSFILTERFACTORY FilterFactory,
+    IN const KSFILTER_DESCRIPTOR *FilterDescriptor OPTIONAL
+    );
+
+
+KSDDKAPI
+PKSFILTER
+NTAPI
+KsGetFilterFromIrp(
+    IN PIRP Irp
+    );
+
 KSDDKAPI
 NTSTATUS
 NTAPI
@@ -3723,6 +3739,23 @@ KsDispatchSetSecurity(
     IN PIRP Irp
     );
 
+KSDDKAPI
+PVOID
+NTAPI
+KsGetParent(
+    IN PVOID Object
+    );
+
+
+PKSFILTERFACTORY
+static
+__inline
+KsFilterGetParentFilterFactory(
+    IN PKSFILTER Filter
+    )
+{
+    return (PKSFILTERFACTORY) KsGetParent((PVOID) Filter);
+}
 
 
 #define KsDeleteFilterFactory(FilterFactory)                                           \