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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;
}
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