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Diffstat (limited to '')
| -rw-r--r-- | dom/vr/VRDisplay.h | 367 |
1 files changed, 367 insertions, 0 deletions
diff --git a/dom/vr/VRDisplay.h b/dom/vr/VRDisplay.h new file mode 100644 index 0000000000..866edc9846 --- /dev/null +++ b/dom/vr/VRDisplay.h @@ -0,0 +1,367 @@ +/* -*- 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 mozilla_dom_VRDisplay_h_ +#define mozilla_dom_VRDisplay_h_ + +#include <stdint.h> + +#include "mozilla/dom/TypedArray.h" +#include "mozilla/dom/VRDisplayBinding.h" +#include "mozilla/DOMEventTargetHelper.h" +#include "mozilla/dom/DOMPoint.h" +#include "mozilla/dom/DOMRect.h" +#include "mozilla/dom/Pose.h" +#include "mozilla/TimeStamp.h" + +#include "nsCOMPtr.h" +#include "nsString.h" +#include "nsTArray.h" + +#include "gfxVR.h" + +namespace mozilla { +class ErrorResult; + +namespace gfx { +class VRDisplayClient; +class VRDisplayPresentation; +struct VRFieldOfView; +enum class VRDisplayCapabilityFlags : uint16_t; +struct VRHMDSensorState; +} // namespace gfx +namespace dom { +class Navigator; + +class VRFieldOfView final : public nsWrapperCache { + public: + VRFieldOfView(nsISupports* aParent, double aUpDegrees, double aRightDegrees, + double aDownDegrees, double aLeftDegrees); + VRFieldOfView(nsISupports* aParent, const gfx::VRFieldOfView& aSrc); + + NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(VRFieldOfView) + NS_DECL_CYCLE_COLLECTION_NATIVE_WRAPPERCACHE_CLASS(VRFieldOfView) + + double UpDegrees() const { return mUpDegrees; } + double RightDegrees() const { return mRightDegrees; } + double DownDegrees() const { return mDownDegrees; } + double LeftDegrees() const { return mLeftDegrees; } + + nsISupports* GetParentObject() const { return mParent; } + virtual JSObject* WrapObject(JSContext* aCx, + JS::Handle<JSObject*> aGivenProto) override; + + protected: + virtual ~VRFieldOfView() = default; + + nsCOMPtr<nsISupports> mParent; + + double mUpDegrees; + double mRightDegrees; + double mDownDegrees; + double mLeftDegrees; +}; + +class VRDisplayCapabilities final : public nsWrapperCache { + public: + VRDisplayCapabilities(nsISupports* aParent, + const gfx::VRDisplayCapabilityFlags& aFlags) + : mParent(aParent), mFlags(aFlags) {} + + NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(VRDisplayCapabilities) + NS_DECL_CYCLE_COLLECTION_NATIVE_WRAPPERCACHE_CLASS(VRDisplayCapabilities) + + nsISupports* GetParentObject() const { return mParent; } + + virtual JSObject* WrapObject(JSContext* aCx, + JS::Handle<JSObject*> aGivenProto) override; + + bool HasPosition() const; + bool HasOrientation() const; + bool HasExternalDisplay() const; + bool CanPresent() const; + uint32_t MaxLayers() const; + + protected: + ~VRDisplayCapabilities() = default; + nsCOMPtr<nsISupports> mParent; + gfx::VRDisplayCapabilityFlags mFlags; +}; + +class VRPose final : public Pose { + public: + VRPose(nsISupports* aParent, const gfx::VRHMDSensorState& aState); + explicit VRPose(nsISupports* aParent); + + virtual void GetPosition(JSContext* aCx, JS::MutableHandle<JSObject*> aRetval, + ErrorResult& aRv) override; + virtual void GetLinearVelocity(JSContext* aCx, + JS::MutableHandle<JSObject*> aRetval, + ErrorResult& aRv) override; + virtual void GetLinearAcceleration(JSContext* aCx, + JS::MutableHandle<JSObject*> aRetval, + ErrorResult& aRv) override; + virtual void GetOrientation(JSContext* aCx, + JS::MutableHandle<JSObject*> aRetval, + ErrorResult& aRv) override; + virtual void GetAngularVelocity(JSContext* aCx, + JS::MutableHandle<JSObject*> aRetval, + ErrorResult& aRv) override; + virtual void GetAngularAcceleration(JSContext* aCx, + JS::MutableHandle<JSObject*> aRetval, + ErrorResult& aRv) override; + + virtual JSObject* WrapObject(JSContext* aCx, + JS::Handle<JSObject*> aGivenProto) override; + + void Update(const gfx::VRHMDSensorState& aState); + + protected: + ~VRPose(); + + gfx::VRHMDSensorState mVRState; +}; + +struct VRFrameInfo { + VRFrameInfo(); + + void Update(const gfx::VRDisplayInfo& aInfo, + const gfx::VRHMDSensorState& aState, float aDepthNear, + float aDepthFar); + + void Clear(); + bool IsDirty(); + + gfx::VRHMDSensorState mVRState; + gfx::Matrix4x4 mLeftProjection; + gfx::Matrix4x4 mLeftView; + gfx::Matrix4x4 mRightProjection; + gfx::Matrix4x4 mRightView; + + /** + * In order to avoid leaking information related to the duration of + * the user's VR session, we re-base timestamps. + * mTimeStampOffset is added to the actual timestamp returned by the + * underlying VR platform API when returned through WebVR API's. + */ + double mTimeStampOffset; +}; + +class VRFrameData final : public nsWrapperCache { + public: + NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(VRFrameData) + NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS(VRFrameData) + + explicit VRFrameData(nsISupports* aParent); + static already_AddRefed<VRFrameData> Constructor(const GlobalObject& aGlobal); + + void Update(const VRFrameInfo& aFrameInfo); + + // WebIDL Members + double Timestamp() const; + void GetLeftProjectionMatrix(JSContext* aCx, + JS::MutableHandle<JSObject*> aRetval, + ErrorResult& aRv); + void GetLeftViewMatrix(JSContext* aCx, JS::MutableHandle<JSObject*> aRetval, + ErrorResult& aRv); + void GetRightProjectionMatrix(JSContext* aCx, + JS::MutableHandle<JSObject*> aRetval, + ErrorResult& aRv); + void GetRightViewMatrix(JSContext* aCx, JS::MutableHandle<JSObject*> aRetval, + ErrorResult& aRv); + + VRPose* Pose(); + + // WebIDL Boilerplate + nsISupports* GetParentObject() const { return mParent; } + virtual JSObject* WrapObject(JSContext* aCx, + JS::Handle<JSObject*> aGivenProto) override; + + protected: + ~VRFrameData(); + nsCOMPtr<nsISupports> mParent; + + VRFrameInfo mFrameInfo; + RefPtr<VRPose> mPose; + JS::Heap<JSObject*> mLeftProjectionMatrix; + JS::Heap<JSObject*> mLeftViewMatrix; + JS::Heap<JSObject*> mRightProjectionMatrix; + JS::Heap<JSObject*> mRightViewMatrix; + + void LazyCreateMatrix(JS::Heap<JSObject*>& aArray, gfx::Matrix4x4& aMat, + JSContext* aCx, JS::MutableHandle<JSObject*> aRetval, + ErrorResult& aRv); +}; + +class VRStageParameters final : public nsWrapperCache { + public: + VRStageParameters(nsISupports* aParent, + const gfx::Matrix4x4& aSittingToStandingTransform, + const gfx::Size& aSize); + + NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(VRStageParameters) + NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS(VRStageParameters) + + void GetSittingToStandingTransform(JSContext* aCx, + JS::MutableHandle<JSObject*> aRetval, + ErrorResult& aRv); + float SizeX() const { return mSize.width; } + float SizeZ() const { return mSize.height; } + + nsISupports* GetParentObject() const { return mParent; } + virtual JSObject* WrapObject(JSContext* aCx, + JS::Handle<JSObject*> aGivenProto) override; + + protected: + ~VRStageParameters(); + + nsCOMPtr<nsISupports> mParent; + + gfx::Matrix4x4 mSittingToStandingTransform; + JS::Heap<JSObject*> mSittingToStandingTransformArray; + gfx::Size mSize; +}; + +class VREyeParameters final : public nsWrapperCache { + public: + VREyeParameters(nsISupports* aParent, const gfx::Point3D& aEyeTranslation, + const gfx::VRFieldOfView& aFOV, + const gfx::IntSize& aRenderSize); + + NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(VREyeParameters) + NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS(VREyeParameters) + + void GetOffset(JSContext* aCx, JS::MutableHandle<JSObject*> aRetVal, + ErrorResult& aRv); + + VRFieldOfView* FieldOfView(); + + uint32_t RenderWidth() const { return mRenderSize.width; } + uint32_t RenderHeight() const { return mRenderSize.height; } + + nsISupports* GetParentObject() const { return mParent; } + virtual JSObject* WrapObject(JSContext* aCx, + JS::Handle<JSObject*> aGivenProto) override; + + protected: + ~VREyeParameters(); + + nsCOMPtr<nsISupports> mParent; + + gfx::Point3D mEyeTranslation; + gfx::IntSize mRenderSize; + JS::Heap<JSObject*> mOffset; + RefPtr<VRFieldOfView> mFOV; +}; + +class VRDisplay final : public DOMEventTargetHelper, public nsIObserver { + public: + NS_DECL_ISUPPORTS_INHERITED + NS_DECL_NSIOBSERVER + NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(VRDisplay, DOMEventTargetHelper) + + virtual JSObject* WrapObject(JSContext* aCx, + JS::Handle<JSObject*> aGivenProto) override; + + uint32_t PresentingGroups() const; + uint32_t GroupMask() const; + void SetGroupMask(const uint32_t& aGroupMask); + bool IsAnyPresenting(uint32_t aGroupMask) const; + bool IsPresenting() const; + bool IsConnected() const; + + VRDisplayCapabilities* Capabilities(); + VRStageParameters* GetStageParameters(); + + uint32_t DisplayId() const; + void GetDisplayName(nsAString& aDisplayName) const; + // Replacing the old VRDisplayClient with the newest one to avoid + // JS needs to reload to recover VRDisplay when VRService is shutdown at the + // backend. + void UpdateDisplayClient(already_AddRefed<gfx::VRDisplayClient> aClient); + + static bool RefreshVRDisplays(uint64_t aWindowId); + static void UpdateVRDisplays(nsTArray<RefPtr<VRDisplay> >& aDisplays, + nsPIDOMWindowInner* aWindow); + + gfx::VRDisplayClient* GetClient() { return mClient; } + + virtual already_AddRefed<VREyeParameters> GetEyeParameters(VREye aEye); + + bool GetFrameData(VRFrameData& aFrameData); + already_AddRefed<VRPose> GetPose(); + void ResetPose(); + + double DepthNear() { return mDepthNear; } + + double DepthFar() { return mDepthFar; } + + void SetDepthNear(double aDepthNear) { + // XXX When we start sending depth buffers to VRLayer's we will want + // to communicate this with the VRDisplayHost + mDepthNear = aDepthNear; + } + + void SetDepthFar(double aDepthFar) { + // XXX When we start sending depth buffers to VRLayer's we will want + // to communicate this with the VRDisplayHost + mDepthFar = aDepthFar; + } + + already_AddRefed<Promise> RequestPresent(const nsTArray<VRLayer>& aLayers, + CallerType aCallerType, + ErrorResult& aRv); + already_AddRefed<Promise> ExitPresent(ErrorResult& aRv); + void GetLayers(nsTArray<VRLayer>& result); + void SubmitFrame(); + + int32_t RequestAnimationFrame(mozilla::dom::FrameRequestCallback& aCallback, + mozilla::ErrorResult& aError); + void CancelAnimationFrame(int32_t aHandle, mozilla::ErrorResult& aError); + void StartVRNavigation(); + void StartHandlingVRNavigationEvent(); + void StopHandlingVRNavigationEvent(); + bool IsHandlingVRNavigationEvent(); + void OnPresentationGenerationChanged(); + + protected: + VRDisplay(nsPIDOMWindowInner* aWindow, gfx::VRDisplayClient* aClient); + virtual ~VRDisplay(); + virtual void LastRelease() override; + + void ExitPresentInternal(); + void Shutdown(); + void UpdateFrameInfo(); + + RefPtr<gfx::VRDisplayClient> mClient; + + RefPtr<VRDisplayCapabilities> mCapabilities; + RefPtr<VRStageParameters> mStageParameters; + + double mDepthNear; + double mDepthFar; + + RefPtr<gfx::VRDisplayPresentation> mPresentation; + + /** + * The WebVR 1.1 spec Requires that VRDisplay.getPose and + * VRDisplay.getFrameData must return the same values until the next + * VRDisplay.submitFrame. mFrameInfo is updated only on the first call to + * either function within one frame. Subsequent calls before the next + * SubmitFrame or ExitPresent call will use these cached values. + */ + VRFrameInfo mFrameInfo; + + // Time at which we began expecting VR navigation. + TimeStamp mHandlingVRNavigationEventStart; + int32_t mVRNavigationEventDepth; + bool mShutdown; +}; + +} // namespace dom +} // namespace mozilla + +#endif |