1 files changed, 57 insertions, 0 deletions
diff --git a/gfx/webrender_bindings/RenderSharedSurfaceTextureHost.h b/gfx/webrender_bindings/RenderSharedSurfaceTextureHost.h
new file mode 100644
index 0000000000..2575abdac3
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+++ b/gfx/webrender_bindings/RenderSharedSurfaceTextureHost.h
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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/. */
+
+#ifndef MOZILLA_GFX_RENDERSHAREDSURFACETEXTUREHOST_H
+#define MOZILLA_GFX_RENDERSHAREDSURFACETEXTUREHOST_H
+
+#include "RenderTextureHostSWGL.h"
+
+namespace mozilla {
+namespace gfx {
+class SourceSurfaceSharedDataWrapper;
+}
+
+namespace wr {
+
+/**
+ * This class allows for surfaces managed by SharedSurfacesParent to be inserted
+ * into the render texture cache by wrapping an existing surface wrapper. These
+ * surfaces are backed by BGRA/X shared memory buffers.
+ */
+class RenderSharedSurfaceTextureHost final : public RenderTextureHostSWGL {
+ public:
+  explicit RenderSharedSurfaceTextureHost(
+      gfx::SourceSurfaceSharedDataWrapper* aSurface);
+
+  // RenderTextureHost
+  wr::WrExternalImage Lock(uint8_t aChannelIndex, gl::GLContext* aGL) override;
+  void Unlock() override;
+  size_t Bytes() override;
+
+  // RenderTextureHostSWGL
+  size_t GetPlaneCount() const override;
+
+  gfx::SurfaceFormat GetFormat() const override;
+
+  gfx::ColorDepth GetColorDepth() const override;
+
+  bool MapPlane(RenderCompositor* aCompositor, uint8_t aChannelIndex,
+                PlaneInfo& aPlaneInfo) override;
+
+  void UnmapPlanes() override;
+
+ private:
+  virtual ~RenderSharedSurfaceTextureHost();
+
+  RefPtr<gfx::SourceSurfaceSharedDataWrapper> mSurface;
+  gfx::DataSourceSurface::MappedSurface mMap;
+  bool mLocked;
+};
+
+}  // namespace wr
+}  // namespace mozilla
+
+#endif  // MOZILLA_GFX_RENDERSHAREDSURFACETEXTUREHOST_H