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-rw-r--r--gfx/vr/VRDisplayClient.cpp143
1 files changed, 143 insertions, 0 deletions
diff --git a/gfx/vr/VRDisplayClient.cpp b/gfx/vr/VRDisplayClient.cpp
new file mode 100644
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+++ b/gfx/vr/VRDisplayClient.cpp
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+/* -*- 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;
+}