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       1             : /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
       2             : * This Source Code Form is subject to the terms of the Mozilla Public
       3             : * License, v. 2.0. If a copy of the MPL was not distributed with this
       4             : * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       5             : 
       6             : #ifndef GFX_VR_DISPLAY_HOST_H
       7             : #define GFX_VR_DISPLAY_HOST_H
       8             : 
       9             : #include "gfxVR.h"
      10             : #include "nsTArray.h"
      11             : #include "nsString.h"
      12             : #include "nsCOMPtr.h"
      13             : #include "mozilla/RefPtr.h"
      14             : #include "mozilla/gfx/2D.h"
      15             : #include "mozilla/Atomics.h"
      16             : #include "mozilla/EnumeratedArray.h"
      17             : #include "mozilla/TimeStamp.h"
      18             : #include "mozilla/TypedEnumBits.h"
      19             : #include "mozilla/dom/GamepadPoseState.h"
      20             : 
      21             : namespace mozilla {
      22             : namespace layers {
      23             : class PTextureParent;
      24             : #if defined(XP_WIN)
      25             : class TextureSourceD3D11;
      26             : #endif
      27             : } // namespace layers
      28             : namespace gfx {
      29             : class VRLayerParent;
      30             : 
      31             : class VRDisplayHost {
      32             : public:
      33           0 :   NS_INLINE_DECL_THREADSAFE_REFCOUNTING(VRDisplayHost)
      34             : 
      35           0 :   const VRDisplayInfo& GetDisplayInfo() const { return mDisplayInfo; }
      36             : 
      37             :   void AddLayer(VRLayerParent* aLayer);
      38             :   void RemoveLayer(VRLayerParent* aLayer);
      39             : 
      40             :   virtual void ZeroSensor() = 0;
      41             :   virtual void StartPresentation() = 0;
      42             :   virtual void StopPresentation() = 0;
      43             :   virtual void NotifyVSync();
      44             : 
      45             :   void StartFrame();
      46             :   void SubmitFrame(VRLayerParent* aLayer,
      47             :                    mozilla::layers::PTextureParent* aTexture,
      48             :                    const gfx::Rect& aLeftEyeRect,
      49             :                    const gfx::Rect& aRightEyeRect);
      50             : 
      51             :   bool CheckClearDisplayInfoDirty();
      52             :   void SetGroupMask(uint32_t aGroupMask);
      53             :   bool GetIsConnected();
      54             : 
      55             : protected:
      56             :   explicit VRDisplayHost(VRDeviceType aType);
      57             :   virtual ~VRDisplayHost();
      58             : 
      59             : #if defined(XP_WIN)
      60             :   // Subclasses should override this SubmitFrame function.
      61             :   // Returns true if the SubmitFrame call will block as necessary
      62             :   // to control timing of the next frame and throttle the render loop
      63             :   // for the needed framerate.
      64             :   virtual bool SubmitFrame(mozilla::layers::TextureSourceD3D11* aSource,
      65             :                            const IntSize& aSize,
      66             :                            const gfx::Rect& aLeftEyeRect,
      67             :                            const gfx::Rect& aRightEyeRect) = 0;
      68             : #endif
      69             : 
      70             :   VRDisplayInfo mDisplayInfo;
      71             : 
      72             :   nsTArray<RefPtr<VRLayerParent>> mLayers;
      73             :   // Weak reference to mLayers entries are cleared in
      74             :   // VRLayerParent destructor
      75             : 
      76             : protected:
      77             :   virtual VRHMDSensorState GetSensorState() = 0;
      78             : 
      79             : private:
      80             :   VRDisplayInfo mLastUpdateDisplayInfo;
      81             :   TimeStamp mLastFrameStart;
      82             : };
      83             : 
      84             : class VRControllerHost {
      85             : public:
      86           0 :   NS_INLINE_DECL_THREADSAFE_REFCOUNTING(VRControllerHost)
      87             : 
      88             :   const VRControllerInfo& GetControllerInfo() const;
      89             :   void SetButtonPressed(uint64_t aBit);
      90             :   uint64_t GetButtonPressed();
      91             :   void SetButtonTouched(uint64_t aBit);
      92             :   uint64_t GetButtonTouched();
      93             :   void SetPose(const dom::GamepadPoseState& aPose);
      94             :   const dom::GamepadPoseState& GetPose();
      95             :   dom::GamepadHand GetHand();
      96             :   void SetVibrateIndex(uint64_t aIndex);
      97             :   uint64_t GetVibrateIndex();
      98             : 
      99             : protected:
     100             :   explicit VRControllerHost(VRDeviceType aType);
     101             :   virtual ~VRControllerHost();
     102             : 
     103             :   VRControllerInfo mControllerInfo;
     104             :   // The current button pressed bit of button mask.
     105             :   uint64_t mButtonPressed;
     106             :   // The current button touched bit of button mask.
     107             :   uint64_t mButtonTouched;
     108             :   uint64_t mVibrateIndex;
     109             :   dom::GamepadPoseState mPose;
     110             : };
     111             : 
     112             : } // namespace gfx
     113             : } // namespace mozilla
     114             : 
     115             : #endif /* GFX_VR_DISPLAY_HOST_H */