OpenVRSession.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_SERVICE_OPENVRSESSION_H

#define GFX_VR_SERVICE_OPENVRSESSION_H

#include "VRSession.h"

#include "openvr.h"

#include "mozilla/TimeStamp.h"

#include "moz_external_vr.h"

#include "OpenVRControllerMapper.h"

#if defined(XP_WIN)

#  include <d3d11_1.h>

#endif

class nsITimer;

namespace mozilla {

namespace gfx {

class VRThread;

class OpenVRControllerMapper;

static const int kNumOpenVRHaptics = 1;

enum OpenVRHand : int8_t {

  Left = 0,

  Right = 1,

  Total = 2,

  None = -1

};

class OpenVRSession : public VRSession {

 public:

  OpenVRSession();

  virtual ~OpenVRSession();

  bool Initialize(mozilla::gfx::VRSystemState& aSystemState,

                  bool aDetectRuntimesOnly) override;

  void Shutdown() override;

  void ProcessEvents(mozilla::gfx::VRSystemState& aSystemState) override;

  void StartFrame(mozilla::gfx::VRSystemState& aSystemState) override;

  bool StartPresentation() override;

  void StopPresentation() override;

  void VibrateHaptic(uint32_t aControllerIdx, uint32_t aHapticIndex,

                     float aIntensity, float aDuration) override;

  void StopVibrateHaptic(uint32_t aControllerIdx) override;

  void StopAllHaptics() override;

 protected:

#if defined(XP_WIN)

  bool SubmitFrame(const mozilla::gfx::VRLayer_Stereo_Immersive& aLayer,

                   ID3D11Texture2D* aTexture) override;

#elif defined(XP_MACOSX)

  bool SubmitFrame(const mozilla::gfx::VRLayer_Stereo_Immersive& aLayer,

                   const VRLayerTextureHandle& aTexture) override;

#endif

 private:

  // OpenVR State

  ::vr::IVRSystem* mVRSystem = nullptr;

  ::vr::IVRChaperone* mVRChaperone = nullptr;

  ::vr::IVRCompositor* mVRCompositor = nullptr;

  ::vr::VRActionSetHandle_t mActionsetFirefox = vr::k_ulInvalidActionSetHandle;

  OpenVRHand mControllerDeviceIndex[kVRControllerMaxCount];

  ControllerInfo mControllerHand[OpenVRHand::Total];

  float mHapticPulseRemaining[kVRControllerMaxCount][kNumOpenVRHaptics];

  float mHapticPulseIntensity[kVRControllerMaxCount][kNumOpenVRHaptics];

  bool mIsWindowsMR;

  TimeStamp mLastHapticUpdate;

  static void HapticTimerCallback(nsITimer* aTimer, void* aClosure);

  bool InitState(mozilla::gfx::VRSystemState& aSystemState);

  void UpdateStageParameters(mozilla::gfx::VRDisplayState& aState);

  void UpdateEyeParameters(mozilla::gfx::VRSystemState& aState);

  void UpdateHeadsetPose(mozilla::gfx::VRSystemState& aState);

  void EnumerateControllers(VRSystemState& aState);

  void UpdateControllerPoses(VRSystemState& aState);

  void UpdateControllerButtons(VRSystemState& aState);

  void UpdateTelemetry(VRSystemState& aSystemState);

  bool SetupContollerActions();

  bool SubmitFrame(const VRLayerTextureHandle& aTextureHandle,

                   ::vr::ETextureType aTextureType,

                   const VRLayerEyeRect& aLeftEyeRect,

                   const VRLayerEyeRect& aRightEyeRect);

#if defined(XP_WIN)

  bool CreateD3DObjects();

#endif

  void GetControllerDeviceId(::vr::ETrackedDeviceClass aDeviceType,

                             ::vr::TrackedDeviceIndex_t aDeviceIndex,

                             nsCString& aId,

                             mozilla::gfx::VRControllerType& aControllerType);

  void UpdateHaptics();

  void StartHapticThread();

  void StopHapticThread();

  void StartHapticTimer();

  void StopHapticTimer();

  RefPtr<nsITimer> mHapticTimer;

  RefPtr<VRThread> mHapticThread;

  mozilla::Mutex mControllerHapticStateMutex MOZ_UNANNOTATED;

  UniquePtr<OpenVRControllerMapper> mControllerMapper;

};

}  // namespace gfx

}  // namespace mozilla

#endif  // GFX_VR_SERVICE_OPENVRSESSION_H