diff -r 000000000000 -r 6474c204b198 content/media/wmf/DXVA2Manager.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/content/media/wmf/DXVA2Manager.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,52 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim:set ts=2 sw=2 sts=2 et cindent: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+#if !defined(DXVA2Manager_h_)
+#define DXVA2Manager_h_
+
+#include "WMF.h"
+#include "nsAutoPtr.h"
+#include "mozilla/Mutex.h"
+
+struct nsIntSize;
+struct nsIntRect;
+
+namespace mozilla {
+
+namespace layers {
+class Image;
+class ImageContainer;
+}
+
+class DXVA2Manager {
+public:
+
+  // Creates and initializes a DXVA2Manager. Currently we always use D3D9Ex
+  // to access DXVA, but via this interface we can seamlessly support D3D11
+  // DXVA integration if need be.
+  static DXVA2Manager* Create();
+
+  // Returns a pointer to the D3D device manager responsible for managing the
+  // device we're using for hardware accelerated video decoding. If we're using
+  // D3D9, this is an IDirect3DDeviceManager9. It is safe to call this on any
+  // thread.
+  virtual IUnknown* GetDXVADeviceManager() = 0;
+
+  // Creates an Image for the video frame stored in aVideoSample.
+  virtual HRESULT CopyToImage(IMFSample* aVideoSample,
+                              const nsIntRect& aRegion,
+                              layers::ImageContainer* aContainer,
+                              layers::Image** aOutImage) = 0;
+
+  virtual ~DXVA2Manager();
+
+protected:
+  Mutex mLock;
+  DXVA2Manager();
+};
+
+} // namespace mozilla
+
+#endif // DXVA2Manager_h_