gfx/vr/VRDisplayHost.h
author Ryan VanderMeulen <ryanvm@gmail.com>
Fri, 01 Sep 2017 15:37:08 -0400
changeset 430269 1d02aa80f2f8c283428f0a8a6310e7d1fec3936c
parent 422286 e50c3345c288af43740042f618bdd1809ddf18b6
child 424145 400f0a670d0ce312148f5b1e0aa124aa5c240b13
permissions -rw-r--r--
Backed out 9 changesets (bug 1383880) for decision task bustage. Backed out changeset 53f5d47a7cb0 (bug 1383880) Backed out changeset a0abda41172a (bug 1383880) Backed out changeset 729a7e2091e8 (bug 1383880) Backed out changeset a33f5a14a471 (bug 1383880) Backed out changeset 5b10d321cfee (bug 1383880) Backed out changeset 8056488d8aed (bug 1383880) Backed out changeset e62c90e3c1e8 (bug 1383880) Backed out changeset 91f116ce6c2a (bug 1383880) Backed out changeset 045498bc36c4 (bug 1383880)

/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* 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_HOST_H
#define GFX_VR_DISPLAY_HOST_H

#include "gfxVR.h"
#include "nsTArray.h"
#include "nsString.h"
#include "nsCOMPtr.h"
#include "mozilla/RefPtr.h"
#include "mozilla/gfx/2D.h"
#include "mozilla/Atomics.h"
#include "mozilla/EnumeratedArray.h"
#include "mozilla/TimeStamp.h"
#include "mozilla/TypedEnumBits.h"
#include "mozilla/dom/GamepadPoseState.h"

#if defined(XP_MACOSX)
class MacIOSurface;
#endif
namespace mozilla {
namespace layers {
class PTextureParent;
#if defined(XP_WIN)
class TextureSourceD3D11;
#endif
} // namespace layers
namespace gfx {
class VRLayerParent;

class VRDisplayHost {
public:
  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(VRDisplayHost)

  const VRDisplayInfo& GetDisplayInfo() const { return mDisplayInfo; }

  void AddLayer(VRLayerParent* aLayer);
  void RemoveLayer(VRLayerParent* aLayer);

  virtual void ZeroSensor() = 0;
  virtual void StartPresentation() = 0;
  virtual void StopPresentation() = 0;
  virtual void NotifyVSync();

  void StartFrame();
  void SubmitFrame(VRLayerParent* aLayer,
                   mozilla::layers::PTextureParent* aTexture,
                   const gfx::Rect& aLeftEyeRect,
                   const gfx::Rect& aRightEyeRect);

  bool CheckClearDisplayInfoDirty();
  void SetGroupMask(uint32_t aGroupMask);
  bool GetIsConnected();

protected:
  explicit VRDisplayHost(VRDeviceType aType);
  virtual ~VRDisplayHost();

#if defined(XP_WIN)
  // Subclasses should override this SubmitFrame function.
  // Returns true if the SubmitFrame call will block as necessary
  // to control timing of the next frame and throttle the render loop
  // for the needed framerate.
  virtual bool SubmitFrame(mozilla::layers::TextureSourceD3D11* aSource,
                           const IntSize& aSize,
                           const gfx::Rect& aLeftEyeRect,
                           const gfx::Rect& aRightEyeRect) = 0;
#elif defined(XP_MACOSX)
  virtual bool SubmitFrame(MacIOSurface* aMacIOSurface,
                           const IntSize& aSize,
                           const gfx::Rect& aLeftEyeRect,
                           const gfx::Rect& aRightEyeRect) = 0;
#endif

  VRDisplayInfo mDisplayInfo;

  nsTArray<RefPtr<VRLayerParent>> mLayers;
  // Weak reference to mLayers entries are cleared in
  // VRLayerParent destructor

protected:
  virtual VRHMDSensorState GetSensorState() = 0;

private:
  VRDisplayInfo mLastUpdateDisplayInfo;
  TimeStamp mLastFrameStart;
  bool mFrameStarted;
};

class VRControllerHost {
public:
  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(VRControllerHost)

  const VRControllerInfo& GetControllerInfo() const;
  void SetButtonPressed(uint64_t aBit);
  uint64_t GetButtonPressed();
  void SetButtonTouched(uint64_t aBit);
  uint64_t GetButtonTouched();
  void SetPose(const dom::GamepadPoseState& aPose);
  const dom::GamepadPoseState& GetPose();
  dom::GamepadHand GetHand();
  void SetVibrateIndex(uint64_t aIndex);
  uint64_t GetVibrateIndex();

protected:
  explicit VRControllerHost(VRDeviceType aType, dom::GamepadHand aHand,
                            uint32_t aDisplayID);
  virtual ~VRControllerHost();

  VRControllerInfo mControllerInfo;
  // The current button pressed bit of button mask.
  uint64_t mButtonPressed;
  // The current button touched bit of button mask.
  uint64_t mButtonTouched;
  uint64_t mVibrateIndex;
  dom::GamepadPoseState mPose;
};

} // namespace gfx
} // namespace mozilla

#endif /* GFX_VR_DISPLAY_HOST_H */