diff --git a/.gitignore b/.gitignore
index 8ce12fe7ee7..416de9a9c93 100644
--- a/.gitignore
+++ b/.gitignore
@@ -108,6 +108,7 @@ dlls/qmgr/qmgr_local_i.c
 dlls/qmgrprxy/qmgrprxy.h
 dlls/qmgrprxy/qmgrprxy_i.c
 dlls/qmgrprxy/qmgrprxy_p.c
+dlls/quartz/fil_data.h
 dlls/quartz/quartz_strmif.h
 dlls/quartz/quartz_strmif_p.c
 dlls/rpcrt4/epm.h
diff --git a/dlls/quartz/Makefile.in b/dlls/quartz/Makefile.in
index 9a4e5118c71..5827d65fa36 100644
--- a/dlls/quartz/Makefile.in
+++ b/dlls/quartz/Makefile.in
@@ -29,6 +29,7 @@ C_SRCS = \
 
 RC_SRCS = version.rc
 
+IDL_H_SRCS = fil_data.idl
 IDL_P_SRCS = quartz_strmif.idl
 IDL_R_SRCS = quartz_strmif.idl
 
diff --git a/dlls/quartz/fil_data.idl b/dlls/quartz/fil_data.idl
new file mode 100644
index 00000000000..93cdf1e43dd
--- /dev/null
+++ b/dlls/quartz/fil_data.idl
@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2009 Vitaliy Margolen
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
+ */
+
+import "objidl.idl";
+import "strmif.idl";
+import "unknwn.idl";
+
+
+/*****************************************************************************
+ * IAMFilterData interface
+ *
+ * Notes:
+ *     - This interface is deprecated and IFilterMapper2 should be used instead.
+ *     - There is no full replacement for IAMFilterData::ParseFilterData short of manually
+ *       parsing out the REGFILTER2 struct from the binary blob.
+ */
+[
+    object,
+    uuid(97f7c4d4-547b-4a5f-8332-536430ad2e4d),
+    pointer_default(unique)
+]
+interface IAMFilterData : IUnknown
+{
+    typedef [unique] IAMFilterData *LPIAMFILTERDATA;
+
+    HRESULT ParseFilterData(
+        [in] BYTE * rgbFilterData,
+        [in] ULONG cb,
+        [out] BYTE ** prgbRegFilter2);
+
+    HRESULT CreateFilterData(
+        [in] REGFILTER2 * prf2,
+        [out] BYTE ** prgbFilterData,
+        [out] ULONG * pcb);
+}
diff --git a/dlls/quartz/filtermapper.c b/dlls/quartz/filtermapper.c
index 78b66992a4e..7d7599fccb5 100644
--- a/dlls/quartz/filtermapper.c
+++ b/dlls/quartz/filtermapper.c
@@ -36,6 +36,8 @@
 #include "strmif.h"
 #include "wine/unicode.h"
 #include "uuids.h"
+#include "initguid.h"
+#include "fil_data.h"
 
 #include "wine/debug.h"
 
@@ -43,49 +45,6 @@ WINE_DEFAULT_DEBUG_CHANNEL(quartz);
 
 #define ARRAYSIZE(array) (sizeof(array)/sizeof((array)[0]))
 
-/* Unexposed IAMFilterData interface */
-typedef struct IAMFilterData IAMFilterData;
-
-typedef struct IAMFilterDataVtbl
-{
-    BEGIN_INTERFACE
-
-    /*** IUnknown methods ***/
-    HRESULT (STDMETHODCALLTYPE *QueryInterface)(
-        IAMFilterData *This,
-        REFIID riid,
-        void **ppvObject);
-
-    ULONG (STDMETHODCALLTYPE *AddRef)(
-        IAMFilterData *This);
-
-    ULONG (STDMETHODCALLTYPE *Release)(
-        IAMFilterData *This);
-
-    /*** IAMFilterData methods ***/
-    HRESULT (STDMETHODCALLTYPE *ParseFilterData)(
-        IAMFilterData *This,
-        BYTE *pData,
-        ULONG cb,
-        BYTE **ppRegFilter2);
-
-    HRESULT (STDMETHODCALLTYPE *CreateFilterData)(
-        IAMFilterData* This,
-        REGFILTER2 *prf2,
-        BYTE **pRegFilterData,
-        ULONG *pcb);
-
-    END_INTERFACE
-} IAMFilterDataVtbl;
-struct IAMFilterData
-{
-    const IAMFilterDataVtbl *lpVtbl;
-};
-static const GUID IID_IAMFilterData = {
- 0x97f7c4d4, 0x547b, 0x4a5f, { 0x83,0x32, 0x53,0x64,0x30,0xad,0x2e,0x4d }
-};
-
-
 typedef struct FilterMapper3Impl
 {
     IFilterMapper3 IFilterMapper3_iface;