import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

dom/media/platforms/wmf/DXVA2Manager.h

@@ -0,0 +1,56 @@
+/* -*- 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"
+#include "nsRect.h"
+
+namespace mozilla {
+
+namespace layers {
+class Image;
+class ImageContainer;
+class KnowsCompositor;
+}
+
+class DXVA2Manager {
+public:
+
+  // Creates and initializes a DXVA2Manager. We can use DXVA2 via either
+  // D3D9Ex or D3D11.
+  static DXVA2Manager* CreateD3D9DXVA(layers::KnowsCompositor* aKnowsCompositor, nsACString& aFailureReason);
+  static DXVA2Manager* CreateD3D11DXVA(layers::KnowsCompositor* aKnowsCompositor, nsACString& aFailureReason);
+
+  // 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
+  // D3D9Ex, this is an IDirect3DDeviceManager9. For D3D11 this is an
+  // IMFDXGIDeviceManager. 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::Image** aOutImage) = 0;
+
+  virtual HRESULT ConfigureForSize(uint32_t aWidth, uint32_t aHeight) { return S_OK; }
+
+  virtual bool IsD3D11() { return false; }
+
+  virtual ~DXVA2Manager();
+
+  virtual bool SupportsConfig(IMFMediaType* aType, float aFramerate) = 0;
+
+protected:
+  Mutex mLock;
+  DXVA2Manager();
+};
+
+} // namespace mozilla
+
+#endif // DXVA2Manager_h_