VRDisplayClient.h - mozsearch

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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 */