import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

gfx/vr/VRDisplayClient.cpp

@@ -0,0 +1,143 @@
+/* -*- 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/. */
+
+#include <math.h>
+
+#include "prlink.h"
+#include "prmem.h"
+#include "prenv.h"
+#include "gfxPrefs.h"
+#include "nsString.h"
+#include "mozilla/Preferences.h"
+#include "mozilla/Unused.h"
+#include "nsServiceManagerUtils.h"
+#include "nsIScreenManager.h"
+
+#ifdef XP_WIN
+#include "../layers/d3d11/CompositorD3D11.h"
+#endif
+
+#include "VRDisplayClient.h"
+#include "VRDisplayPresentation.h"
+#include "VRManagerChild.h"
+#include "VRLayerChild.h"
+
+using namespace mozilla;
+using namespace mozilla::gfx;
+
+VRDisplayClient::VRDisplayClient(const VRDisplayInfo& aDisplayInfo)
+  : mDisplayInfo(aDisplayInfo)
+  , bLastEventWasPresenting(false)
+  , mPresentationCount(0)
+{
+  MOZ_COUNT_CTOR(VRDisplayClient);
+}
+
+VRDisplayClient::~VRDisplayClient() {
+  MOZ_COUNT_DTOR(VRDisplayClient);
+}
+
+void
+VRDisplayClient::UpdateDisplayInfo(const VRDisplayInfo& aDisplayInfo)
+{
+  mDisplayInfo = aDisplayInfo;
+}
+
+already_AddRefed<VRDisplayPresentation>
+VRDisplayClient::BeginPresentation(const nsTArray<mozilla::dom::VRLayer>& aLayers)
+{
+  ++mPresentationCount;
+  RefPtr<VRDisplayPresentation> presentation = new VRDisplayPresentation(this, aLayers);
+  return presentation.forget();
+}
+
+void
+VRDisplayClient::PresentationDestroyed()
+{
+  --mPresentationCount;
+}
+
+void
+VRDisplayClient::ZeroSensor()
+{
+  VRManagerChild *vm = VRManagerChild::Get();
+  vm->SendResetSensor(mDisplayInfo.mDisplayID);
+}
+
+VRHMDSensorState
+VRDisplayClient::GetSensorState()
+{
+  VRHMDSensorState sensorState;
+  VRManagerChild *vm = VRManagerChild::Get();
+  Unused << vm->SendGetSensorState(mDisplayInfo.mDisplayID, &sensorState);
+  return sensorState;
+}
+
+VRHMDSensorState
+VRDisplayClient::GetImmediateSensorState()
+{
+  VRHMDSensorState sensorState;
+
+  VRManagerChild *vm = VRManagerChild::Get();
+  Unused << vm->SendGetImmediateSensorState(mDisplayInfo.mDisplayID, &sensorState);
+  return sensorState;
+}
+
+const double kVRDisplayRAFMaxDuration = 32; // milliseconds
+
+void
+VRDisplayClient::NotifyVsync()
+{
+  VRManagerChild *vm = VRManagerChild::Get();
+
+  bool isPresenting = GetIsPresenting();
+
+  bool bShouldCallback = !isPresenting;
+  if (mLastVSyncTime.IsNull()) {
+    bShouldCallback = true;
+  } else {
+    TimeDuration duration = TimeStamp::Now() - mLastVSyncTime;
+    if (duration.ToMilliseconds() > kVRDisplayRAFMaxDuration) {
+      bShouldCallback = true;
+    }
+  }
+
+  if (bShouldCallback) {
+    vm->RunFrameRequestCallbacks();
+    mLastVSyncTime = TimeStamp::Now();
+  }
+
+  // Check if we need to trigger onVRDisplayPresentChange event
+  if (bLastEventWasPresenting != isPresenting) {
+    bLastEventWasPresenting = isPresenting;
+    vm->FireDOMVRDisplayPresentChangeEvent();
+  }
+}
+
+void
+VRDisplayClient::NotifyVRVsync()
+{
+  VRManagerChild *vm = VRManagerChild::Get();
+  vm->RunFrameRequestCallbacks();
+  mLastVSyncTime = TimeStamp::Now();
+}
+
+bool
+VRDisplayClient::GetIsConnected() const
+{
+  return mDisplayInfo.GetIsConnected();
+}
+
+bool
+VRDisplayClient::GetIsPresenting() const
+{
+  return mDisplayInfo.GetIsPresenting();
+}
+
+void
+VRDisplayClient::NotifyDisconnected()
+{
+  mDisplayInfo.mIsConnected = false;
+}