1 files changed, 103 insertions, 0 deletions
diff --git a/gfx/vr/VRDisplayClient.h b/gfx/vr/VRDisplayClient.h
new file mode 100644
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+++ b/gfx/vr/VRDisplayClient.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 GFX_VR_DISPLAY_CLIENT_H
+#define GFX_VR_DISPLAY_CLIENT_H
+
+#include "nsCOMPtr.h"
+#include "mozilla/Attributes.h"
+#include "mozilla/RefPtr.h"
+#include "mozilla/dom/VRDisplayBinding.h"
+
+#include "gfxVR.h"
+
+namespace mozilla {
+namespace dom {
+enum class XRReferenceSpaceType : uint8_t;
+class XRSession;
+}  // namespace dom
+namespace gfx {
+class VRDisplayPresentation;
+class VRManagerChild;
+
+class VRDisplayClient {
+ public:
+  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(VRDisplayClient)
+
+  explicit VRDisplayClient(const VRDisplayInfo& aDisplayInfo);
+
+  MOZ_CAN_RUN_SCRIPT void UpdateDisplayInfo(const VRDisplayInfo& aDisplayInfo);
+  void UpdateSubmitFrameResult(const VRSubmitFrameResultInfo& aResult);
+
+  const VRDisplayInfo& GetDisplayInfo() const { return mDisplayInfo; }
+  virtual const VRHMDSensorState& GetSensorState() const;
+  void GetSubmitFrameResult(VRSubmitFrameResultInfo& aResult);
+
+  already_AddRefed<VRDisplayPresentation> BeginPresentation(
+      const nsTArray<dom::VRLayer>& aLayers, uint32_t aGroup);
+  void PresentationCreated();
+  void PresentationDestroyed();
+
+  void SessionStarted(dom::XRSession* aSession);
+  void SessionEnded(dom::XRSession* aSession);
+
+  bool GetIsConnected() const;
+
+  void NotifyDisconnected();
+  void SetGroupMask(uint32_t aGroupMask);
+
+  bool IsPresentationGenerationCurrent() const;
+  void MakePresentationGenerationCurrent();
+
+  void StartVRNavigation();
+  void StopVRNavigation(const TimeDuration& aTimeout);
+
+  bool IsPresenting();
+  bool IsReferenceSpaceTypeSupported(dom::XRReferenceSpaceType aType) const;
+  gfx::VRAPIMode GetXRAPIMode() const;
+  void SetXRAPIMode(gfx::VRAPIMode aMode);
+
+ protected:
+  virtual ~VRDisplayClient();
+
+  MOZ_CAN_RUN_SCRIPT void FireEvents();
+  void FireGamepadEvents();
+  MOZ_CAN_RUN_SCRIPT void StartFrame();
+
+  VRDisplayInfo mDisplayInfo;
+
+  bool bLastEventWasMounted;
+  bool bLastEventWasPresenting;
+
+  int mPresentationCount;
+  uint64_t mLastEventFrameId;
+  uint32_t mLastPresentingGeneration;
+
+  // Difference between mDisplayInfo.mControllerState and
+  // mLastEventControllerState determines what gamepad events to fire when
+  // updated.
+  VRControllerState mLastEventControllerState[kVRControllerMaxCount];
+
+  /**
+   * mSessions is cleared in VRDisplayClient::SessionEnded.
+   * SessionEnded is guaranteed to be called by every XRSession
+   * when it is shutdown explicitly with the WebXR XRSession.end
+   * call, when all JS references on the XRSession are released, or
+   * when the window is closed.
+   */
+  nsTArray<RefPtr<dom::XRSession>> mSessions;
+
+ private:
+  void GamepadMappingForWebVR(VRControllerState& aControllerState);
+
+  VRSubmitFrameResultInfo mSubmitFrameResult;
+  gfx::VRAPIMode mAPIMode;
+};
+
+}  // namespace gfx
+}  // namespace mozilla
+
+#endif /* GFX_VR_DISPLAY_CLIENT_H */