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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_MANAGER_H
#define GFX_VR_MANAGER_H
#include "nsHashKeys.h"
#include "nsIObserver.h"
#include "nsTArray.h"
#include "nsThreadUtils.h"
#include "mozilla/Atomics.h"
#include "mozilla/dom/GamepadHandle.h"
#include "mozilla/layers/LayersSurfaces.h" // for SurfaceDescriptor
#include "mozilla/Monitor.h"
#include "mozilla/TimeStamp.h"
#include "gfxVR.h"
class nsITimer;
namespace mozilla {
namespace gfx {
class VRLayerParent;
class VRManagerParent;
class VRServiceHost;
class VRThread;
class VRShMem;
enum class VRManagerState : uint32_t {
Disabled, // All VRManager activity is stopped
Idle, // No VR hardware has been activated, but background tasks are running
RuntimeDetection, // Waiting for detection of runtimes without starting up VR
// hardware
Enumeration, // Waiting for enumeration and startup of VR hardware
Active, // VR hardware is active
Stopping, // Waiting for the VRService to stop
};
class VRManager : nsIObserver {
public:
NS_DECL_THREADSAFE_ISUPPORTS
NS_DECL_NSIOBSERVER
static void ManagerInit();
static VRManager* Get();
static VRManager* MaybeGet();
void AddVRManagerParent(VRManagerParent* aVRManagerParent);
void RemoveVRManagerParent(VRManagerParent* aVRManagerParent);
void NotifyVsync(const TimeStamp& aVsyncTimestamp);
void DetectRuntimes();
void EnumerateDevices();
void StopAllHaptics();
void VibrateHaptic(mozilla::dom::GamepadHandle aGamepadHandle,
uint32_t aHapticIndex, double aIntensity, double aDuration,
const VRManagerPromise& aPromise);
void StopVibrateHaptic(mozilla::dom::GamepadHandle aGamepadHandle);
void NotifyVibrateHapticCompleted(const VRManagerPromise& aPromise);
void StartVRNavigation(const uint32_t& aDisplayID);
void StopVRNavigation(const uint32_t& aDisplayID,
const TimeDuration& aTimeout);
void Shutdown();
void ShutdownVRManagerParents();
#if !defined(MOZ_WIDGET_ANDROID)
bool RunPuppet(const nsTArray<uint64_t>& aBuffer,
VRManagerParent* aManagerParent);
void ResetPuppet(VRManagerParent* aManagerParent);
void NotifyPuppetComplete();
#endif
void AddLayer(VRLayerParent* aLayer);
void RemoveLayer(VRLayerParent* aLayer);
void SetGroupMask(uint32_t aGroupMask);
void SubmitFrame(VRLayerParent* aLayer,
const layers::SurfaceDescriptor& aTexture, uint64_t aFrameId,
const gfx::Rect& aLeftEyeRect,
const gfx::Rect& aRightEyeRect);
bool IsPresenting();
private:
VRManager();
virtual ~VRManager();
void Destroy();
void StartTasks();
void StopTasks();
static void TaskTimerCallback(nsITimer* aTimer, void* aClosure);
void RunTasks();
void Run1msTasks(double aDeltaTime);
void Run10msTasks();
void Run100msTasks();
uint32_t GetOptimalTaskInterval();
void ProcessManagerState();
void ProcessManagerState_Disabled();
void ProcessManagerState_Idle();
void ProcessManagerState_Idle_StartRuntimeDetection();
void ProcessManagerState_Idle_StartEnumeration();
void ProcessManagerState_DetectRuntimes();
void ProcessManagerState_Enumeration();
void ProcessManagerState_Active();
void ProcessManagerState_Stopping();
void PullState(const std::function<bool()>& aWaitCondition = nullptr);
void PushState(const bool aNotifyCond = false);
static uint32_t AllocateDisplayID();
void DispatchVRDisplayInfoUpdate();
void DispatchRuntimeCapabilitiesUpdate();
void UpdateRequestedDevices();
void CheckForInactiveTimeout();
#if !defined(MOZ_WIDGET_ANDROID)
void CheckForPuppetCompletion();
#endif
void CheckForShutdown();
void CheckWatchDog();
void ExpireNavigationTransition();
void OpenShmem();
void CloseShmem();
void UpdateHaptics(double aDeltaTime);
void ClearHapticSlot(size_t aSlot);
void StartFrame();
void ShutdownSubmitThread();
void StartPresentation();
void StopPresentation();
void CancelCurrentSubmitTask();
void SubmitFrameInternal(const layers::SurfaceDescriptor& aTexture,
uint64_t aFrameId, const gfx::Rect& aLeftEyeRect,
const gfx::Rect& aRightEyeRect);
bool SubmitFrame(const layers::SurfaceDescriptor& aTexture, uint64_t aFrameId,
const gfx::Rect& aLeftEyeRect,
const gfx::Rect& aRightEyeRect);
Atomic<VRManagerState> mState;
typedef nsTHashtable<nsRefPtrHashKey<VRManagerParent>> VRManagerParentSet;
VRManagerParentSet mVRManagerParents;
#if !defined(MOZ_WIDGET_ANDROID)
VRManagerParentSet mManagerParentsWaitingForPuppetReset;
RefPtr<VRManagerParent> mManagerParentRunningPuppet;
#endif
// Weak reference to mLayers entries are cleared in
// VRLayerParent destructor
nsTArray<VRLayerParent*> mLayers;
TimeStamp mLastDisplayEnumerationTime;
TimeStamp mLastActiveTime;
TimeStamp mLastTickTime;
TimeStamp mEarliestRestartTime;
TimeStamp mVRNavigationTransitionEnd;
TimeStamp mLastFrameStart[kVRMaxLatencyFrames];
double mAccumulator100ms;
bool mRuntimeDetectionRequested;
bool mRuntimeDetectionCompleted;
bool mEnumerationRequested;
bool mEnumerationCompleted;
bool mVRDisplaysRequested;
bool mVRDisplaysRequestedNonFocus;
bool mVRControllersRequested;
bool mFrameStarted;
uint32_t mTaskInterval;
RefPtr<nsITimer> mTaskTimer;
mozilla::Monitor mCurrentSubmitTaskMonitor;
RefPtr<CancelableRunnable> mCurrentSubmitTask;
uint64_t mLastSubmittedFrameId;
uint64_t mLastStartedFrame;
VRDisplayCapabilityFlags mRuntimeSupportFlags;
bool mAppPaused;
// Note: mShmem doesn't support RefPtr; thus, do not share this private
// pointer so that its lifetime can still be controlled by VRManager
VRShMem* mShmem;
bool mVRProcessEnabled;
#if !defined(MOZ_WIDGET_ANDROID)
RefPtr<VRServiceHost> mServiceHost;
#endif
static Atomic<uint32_t> sDisplayBase;
RefPtr<VRThread> mSubmitThread;
VRTelemetry mTelemetry;
nsTArray<UniquePtr<VRManagerPromise>> mHapticPromises;
// Duration of haptic pulse time remaining (milliseconds)
double mHapticPulseRemaining[kVRHapticsMaxCount];
VRDisplayInfo mDisplayInfo;
VRDisplayInfo mLastUpdateDisplayInfo;
VRBrowserState mBrowserState;
VRHMDSensorState mLastSensorState;
};
} // namespace gfx
} // namespace mozilla
#endif // GFX_VR_MANAGER_H
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