1 files changed, 76 insertions, 0 deletions
diff --git a/gfx/vr/ipc/VRLayerChild.h b/gfx/vr/ipc/VRLayerChild.h
new file mode 100644
index 0000000000..de91a46b87
--- /dev/null
+++ b/gfx/vr/ipc/VRLayerChild.h
@@ -0,0 +1,76 @@
+/* -*- 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 GFX_VR_LAYERCHILD_H
+#define GFX_VR_LAYERCHILD_H
+
+#include "VRManagerChild.h"
+
+#include "mozilla/RefPtr.h"
+#include "mozilla/gfx/PVRLayerChild.h"
+#include "gfxVR.h"
+
+class nsICanvasRenderingContextInternal;
+
+namespace mozilla {
+class WebGLContext;
+class WebGLFramebufferJS;
+namespace dom {
+class HTMLCanvasElement;
+}
+namespace layers {
+class SharedSurfaceTextureClient;
+}
+namespace gl {
+class SurfaceFactory;
+}
+namespace gfx {
+
+class VRLayerChild : public PVRLayerChild {
+  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(VRLayerChild)
+
+ public:
+  static PVRLayerChild* CreateIPDLActor();
+  static bool DestroyIPDLActor(PVRLayerChild* actor);
+
+  void Initialize(dom::HTMLCanvasElement* aCanvasElement,
+                  const gfx::Rect& aLeftEyeRect,
+                  const gfx::Rect& aRightEyeRect);
+  void SetXRFramebuffer(WebGLFramebufferJS*);
+  void SubmitFrame(const VRDisplayInfo& aDisplayInfo);
+  bool IsIPCOpen();
+
+ private:
+  VRLayerChild();
+  virtual ~VRLayerChild();
+  void ClearSurfaces();
+  virtual void ActorDestroy(ActorDestroyReason aWhy) override;
+
+  RefPtr<dom::HTMLCanvasElement> mCanvasElement;
+  bool mIPCOpen = false;
+
+  // AddIPDLReference and ReleaseIPDLReference are only to be called by
+  // CreateIPDLActor and DestroyIPDLActor, respectively. We intentionally make
+  // them private to prevent misuse. The purpose of these methods is to be aware
+  // of when the IPC system around this actor goes down: mIPCOpen is then set to
+  // false.
+  void AddIPDLReference();
+  void ReleaseIPDLReference();
+
+  gfx::Rect mLeftEyeRect;
+  gfx::Rect mRightEyeRect;
+  RefPtr<WebGLFramebufferJS> mFramebuffer;
+
+  Maybe<layers::SurfaceDescriptor> mThisFrameTextureDesc;
+  Maybe<layers::SurfaceDescriptor> mLastFrameTextureDesc;
+
+  uint64_t mLastSubmittedFrameId = 0;
+};
+
+}  // namespace gfx
+}  // namespace mozilla
+
+#endif