- Implement KsGetObjectFromFileObject, KsGetObjectFromFileObject, KsGetObjectTypeFromIrp, KsGetParent

svn path=/trunk/; revision=42268

reactos/drivers/ksfilter/ks/api.c

@@ -513,6 +513,11 @@ KsAllocateDeviceHeader(
     /* initialize create item list */
     InitializeListHead(&Header->ItemList);
 
+    /* initialize basic header */
+    Header->BasicHeader.Type = KsObjectTypeDevice;
+    Header->BasicHeader.KsDevice = &Header->KsDevice;
+    Header->BasicHeader.Parent.KsDevice = &Header->KsDevice;
+
     /* are there any create items provided */
     if (ItemsCount && ItemsList)
     {

reactos/drivers/ksfilter/ks/device.c

@@ -653,7 +653,6 @@ KsInitializeDevice(
     KsSetDevicePnpAndBaseObject(Header, PhysicalDeviceObject, NextDeviceObject);
     /* initialize IKsDevice interface */
     Header->lpVtblIKsDevice = &vt_IKsDevice;
-    Header->Type = KsObjectTypeDevice;
     Header->ref = 1;
 
     /* FIXME Power state */

reactos/drivers/ksfilter/ks/filter.c

@@ -865,6 +865,7 @@ KspCreateFilter(
     This->FilterFactory = iface;
     This->FileObject = IoStack->FileObject;
     This->Header.KsDevice = &DeviceExtension->DeviceHeader->KsDevice;
+    This->Header.Parent.KsFilterFactory = iface->lpVtbl->GetStruct(iface);
     This->Header.Type = KsObjectTypeFilter;
 
     /* allocate the stream descriptors */
@@ -919,6 +920,7 @@ KspCreateFilter(
     This->Header.KsDevice = &DeviceExtension->DeviceHeader->KsDevice;
     This->ObjectHeader->Type = KsObjectTypeFilter;
     This->ObjectHeader->Unknown = (PUNKNOWN)&This->lpVtbl;
+    This->ObjectHeader->ObjectType = (PVOID)&This->Filter;
 
 
     /* completed initialization */

reactos/drivers/ksfilter/ks/filterfactory.c

@@ -185,6 +185,7 @@ IKsFilterFactory_fnInitialize(
     This->FilterFactory.FilterDescriptor = Descriptor;
     This->Header.KsDevice = &DeviceExtension->DeviceHeader->KsDevice;
     This->Header.Type = KsObjectTypeFilterFactory;
+    This->Header.Parent.KsDevice = &DeviceExtension->DeviceHeader->KsDevice;
     This->DeviceHeader = DeviceExtension->DeviceHeader;
 
     InitializeListHead(&This->SymbolicLinkList);

reactos/drivers/ksfilter/ks/kstypes.h

@@ -28,6 +28,7 @@ typedef struct
 
     UNICODE_STRING ObjectClass;
     PUNKNOWN Unknown;
+    PVOID ObjectType;
 
     PDEVICE_OBJECT TargetDevice;
     LIST_ENTRY TargetDeviceListEntry;
@@ -55,11 +56,17 @@ typedef struct
 {
     KSOBJECTTYPE Type;
     PKSDEVICE KsDevice;
+    union
+    {
+        PKSDEVICE KsDevice;
+        PKSFILTERFACTORY KsFilterFactory;
+        PKSFILTER KsFilter;
+    }Parent;
 }KSBASIC_HEADER, *PKSBASIC_HEADER;
 
 typedef struct
 {
-    KSOBJECTTYPE Type;
+    KSBASIC_HEADER BasicHeader;
     KSDEVICE KsDevice;
     IKsDeviceVtbl *lpVtblIKsDevice;
 

reactos/drivers/ksfilter/ks/misc.c

@@ -140,7 +140,7 @@ KspCopyCreateRequest(
 }
 
 /*
-    @unimplemented
+    @implemented
 */
 KSDDKAPI
 PVOID
@@ -148,12 +148,17 @@ NTAPI
 KsGetObjectFromFileObject(
     IN PFILE_OBJECT FileObject)
 {
-    UNIMPLEMENTED
+    PKSIOBJECT_HEADER ObjectHeader;
-    return NULL;
+
+    /* get object header */
+    ObjectHeader = (PKSIOBJECT_HEADER)FileObject->FsContext;
+
+    /* return associated object */
+    return ObjectHeader->ObjectType;
 }
 
 /*
-    @unimplemented
+    @implemented
 */
 KSDDKAPI
 KSOBJECTTYPE
@@ -161,20 +166,31 @@ NTAPI
 KsGetObjectTypeFromFileObject(
     IN PFILE_OBJECT FileObject)
 {
-    UNIMPLEMENTED
+    PKSIOBJECT_HEADER ObjectHeader;
-    return (KSOBJECTTYPE)-1;
+
+    /* get object header */
+    ObjectHeader = (PKSIOBJECT_HEADER)FileObject->FsContext;
+    /* return type */
+    return ObjectHeader->Type;
 }
 
 /*
-    @unimplemented
+    @implemented
 */
 KSOBJECTTYPE
 NTAPI
 KsGetObjectTypeFromIrp(
     IN PIRP  Irp)
 {
-    UNIMPLEMENTED
+    PKSIOBJECT_HEADER ObjectHeader;
-    return (KSOBJECTTYPE)-1;
+    PIO_STACK_LOCATION IoStack;
+
+    /* get current irp stack */
+    IoStack = IoGetCurrentIrpStackLocation(Irp);
+    /* get object header */
+    ObjectHeader = (PKSIOBJECT_HEADER)IoStack->FileObject->FsContext;
+    /* return type */
+    return ObjectHeader->Type;
 }
 
 /*
@@ -191,7 +207,7 @@ KsGetOuterUnknown(
 }
 
 /*
-    @unimplemented
+    @implemented
 */
 KSDDKAPI
 PVOID
@@ -199,8 +215,11 @@ NTAPI
 KsGetParent(
     IN PVOID Object)
 {
-    UNIMPLEMENTED
+    PKSBASIC_HEADER BasicHeader = (PKSBASIC_HEADER)((ULONG_PTR)Object - sizeof(KSBASIC_HEADER));
-    return NULL;
+    /* sanity check */
+    ASSERT(BasicHeader->Parent.KsDevice != NULL);
+    /* return object type */
+    return (PVOID)BasicHeader->Parent.KsDevice;
 }