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tenfourfox/dom/vr/VRDevice.cpp

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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/. */
#include "nsWrapperCache.h"
#include "mozilla/dom/Element.h"
#include "mozilla/dom/VRDeviceBinding.h"
#include "mozilla/dom/ElementBinding.h"
#include "mozilla/dom/VRDevice.h"
#include "gfxVR.h"
#include "nsIFrame.h"
using namespace mozilla::gfx;
namespace mozilla {
namespace dom {
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(VRFieldOfViewReadOnly, mParent)
NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(VRFieldOfViewReadOnly, AddRef)
NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(VRFieldOfViewReadOnly, Release)
JSObject*
VRFieldOfViewReadOnly::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
{
return VRFieldOfViewReadOnlyBinding::Wrap(aCx, this, aGivenProto);
}
already_AddRefed<VRFieldOfView>
VRFieldOfView::Constructor(const GlobalObject& aGlobal, const VRFieldOfViewInit& aParams,
ErrorResult& aRV)
{
RefPtr<VRFieldOfView> fov =
new VRFieldOfView(aGlobal.GetAsSupports(),
aParams.mUpDegrees, aParams.mRightDegrees,
aParams.mDownDegrees, aParams.mLeftDegrees);
return fov.forget();
}
already_AddRefed<VRFieldOfView>
VRFieldOfView::Constructor(const GlobalObject& aGlobal,
double aUpDegrees, double aRightDegrees,
double aDownDegrees, double aLeftDegrees,
ErrorResult& aRV)
{
RefPtr<VRFieldOfView> fov =
new VRFieldOfView(aGlobal.GetAsSupports(),
aUpDegrees, aRightDegrees, aDownDegrees,
aLeftDegrees);
return fov.forget();
}
JSObject*
VRFieldOfView::WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto)
{
return VRFieldOfViewBinding::Wrap(aCx, this, aGivenProto);
}
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(VREyeParameters, mParent, mMinFOV, mMaxFOV, mRecFOV, mCurFOV, mEyeTranslation, mRenderRect)
NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(VREyeParameters, AddRef)
NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(VREyeParameters, Release)
VREyeParameters::VREyeParameters(nsISupports* aParent,
const gfx::VRFieldOfView& aMinFOV,
const gfx::VRFieldOfView& aMaxFOV,
const gfx::VRFieldOfView& aRecFOV,
const gfx::Point3D& aEyeTranslation,
const gfx::VRFieldOfView& aCurFOV,
const gfx::IntRect& aRenderRect)
: mParent(aParent)
{
mMinFOV = new VRFieldOfView(aParent, aMinFOV);
mMaxFOV = new VRFieldOfView(aParent, aMaxFOV);
mRecFOV = new VRFieldOfView(aParent, aRecFOV);
mCurFOV = new VRFieldOfView(aParent, aCurFOV);
mEyeTranslation = new DOMPoint(aParent, aEyeTranslation.x, aEyeTranslation.y, aEyeTranslation.z, 0.0);
mRenderRect = new DOMRect(aParent, aRenderRect.x, aRenderRect.y, aRenderRect.width, aRenderRect.height);
}
VRFieldOfView*
VREyeParameters::MinimumFieldOfView()
{
return mMinFOV;
}
VRFieldOfView*
VREyeParameters::MaximumFieldOfView()
{
return mMaxFOV;
}
VRFieldOfView*
VREyeParameters::RecommendedFieldOfView()
{
return mRecFOV;
}
VRFieldOfView*
VREyeParameters::CurrentFieldOfView()
{
return mCurFOV;
}
DOMPoint*
VREyeParameters::EyeTranslation()
{
return mEyeTranslation;
}
DOMRect*
VREyeParameters::RenderRect()
{
return mRenderRect;
}
JSObject*
VREyeParameters::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
{
return VREyeParametersBinding::Wrap(aCx, this, aGivenProto);
}
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(VRPositionState, mParent)
NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(VRPositionState, AddRef)
NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(VRPositionState, Release)
VRPositionState::VRPositionState(nsISupports* aParent, const gfx::VRHMDSensorState& aState)
: mParent(aParent)
, mVRState(aState)
{
mTimeStamp = aState.timestamp;
if (aState.flags & gfx::VRHMDInfo::State_Position) {
mPosition = new DOMPoint(mParent, aState.position[0], aState.position[1], aState.position[2], 0.0);
}
if (aState.flags & gfx::VRHMDInfo::State_Orientation) {
mOrientation = new DOMPoint(mParent, aState.orientation[0], aState.orientation[1], aState.orientation[2], aState.orientation[3]);
}
}
DOMPoint*
VRPositionState::GetLinearVelocity()
{
if (!mLinearVelocity) {
mLinearVelocity = new DOMPoint(mParent, mVRState.linearVelocity[0], mVRState.linearVelocity[1], mVRState.linearVelocity[2], 0.0);
}
return mLinearVelocity;
}
DOMPoint*
VRPositionState::GetLinearAcceleration()
{
if (!mLinearAcceleration) {
mLinearAcceleration = new DOMPoint(mParent, mVRState.linearAcceleration[0], mVRState.linearAcceleration[1], mVRState.linearAcceleration[2], 0.0);
}
return mLinearAcceleration;
}
DOMPoint*
VRPositionState::GetAngularVelocity()
{
if (!mAngularVelocity) {
mAngularVelocity = new DOMPoint(mParent, mVRState.angularVelocity[0], mVRState.angularVelocity[1], mVRState.angularVelocity[2], 0.0);
}
return mAngularVelocity;
}
DOMPoint*
VRPositionState::GetAngularAcceleration()
{
if (!mAngularAcceleration) {
mAngularAcceleration = new DOMPoint(mParent, mVRState.angularAcceleration[0], mVRState.angularAcceleration[1], mVRState.angularAcceleration[2], 0.0);
}
return mAngularAcceleration;
}
JSObject*
VRPositionState::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
{
return VRPositionStateBinding::Wrap(aCx, this, aGivenProto);
}
NS_IMPL_CYCLE_COLLECTING_ADDREF(VRDevice)
NS_IMPL_CYCLE_COLLECTING_RELEASE(VRDevice)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(VRDevice)
NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(VRDevice, mParent)
/* virtual */ JSObject*
HMDVRDevice::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
{
return HMDVRDeviceBinding::Wrap(aCx, this, aGivenProto);
}
/* virtual */ JSObject*
PositionSensorVRDevice::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
{
return PositionSensorVRDeviceBinding::Wrap(aCx, this, aGivenProto);
}
namespace {
class HMDInfoVRDevice : public HMDVRDevice
{
public:
HMDInfoVRDevice(nsISupports* aParent, gfx::VRHMDInfo* aHMD)
: HMDVRDevice(aParent, aHMD)
{
uint64_t hmdid = aHMD->GetDeviceIndex() << 8;
uint64_t devid = hmdid | 0x00; // we generate a devid with low byte 0 for the HMD, 1 for the position sensor
mHWID.Truncate();
mHWID.AppendPrintf("0x%llx", hmdid);
mDeviceId.Truncate();
mDeviceId.AppendPrintf("0x%llx", devid);
mDeviceName.Truncate();
mDeviceName.Append(NS_ConvertASCIItoUTF16(aHMD->GetDeviceName()));
mDeviceName.AppendLiteral(" (HMD)");
mValid = true;
}
virtual ~HMDInfoVRDevice() { }
/* If a field of view that is set to all 0's is passed in,
* the recommended field of view for that eye is used.
*/
virtual void SetFieldOfView(const VRFieldOfViewInit& aLeftFOV,
const VRFieldOfViewInit& aRightFOV,
double zNear, double zFar) override
{
gfx::VRFieldOfView left = gfx::VRFieldOfView(aLeftFOV.mUpDegrees, aLeftFOV.mRightDegrees,
aLeftFOV.mDownDegrees, aLeftFOV.mLeftDegrees);
gfx::VRFieldOfView right = gfx::VRFieldOfView(aRightFOV.mUpDegrees, aRightFOV.mRightDegrees,
aRightFOV.mDownDegrees, aRightFOV.mLeftDegrees);
if (left.IsZero())
left = mHMD->GetRecommendedEyeFOV(VRHMDInfo::Eye_Left);
if (right.IsZero())
right = mHMD->GetRecommendedEyeFOV(VRHMDInfo::Eye_Right);
mHMD->SetFOV(left, right, zNear, zFar);
}
virtual already_AddRefed<VREyeParameters> GetEyeParameters(VREye aEye) override
{
gfx::IntSize sz(mHMD->SuggestedEyeResolution());
gfx::VRHMDInfo::Eye eye = aEye == VREye::Left ? gfx::VRHMDInfo::Eye_Left : gfx::VRHMDInfo::Eye_Right;
RefPtr<VREyeParameters> params =
new VREyeParameters(mParent,
gfx::VRFieldOfView(15, 15, 15, 15), // XXX min?
mHMD->GetMaximumEyeFOV(eye),
mHMD->GetRecommendedEyeFOV(eye),
mHMD->GetEyeTranslation(eye),
mHMD->GetEyeFOV(eye),
gfx::IntRect((aEye == VREye::Left) ? 0 : sz.width, 0, sz.width, sz.height));
return params.forget();
}
protected:
};
class HMDPositionVRDevice : public PositionSensorVRDevice
{
public:
HMDPositionVRDevice(nsISupports* aParent, gfx::VRHMDInfo* aHMD)
: PositionSensorVRDevice(aParent)
, mHMD(aHMD)
, mTracking(false)
{
uint64_t hmdid = aHMD->GetDeviceIndex() << 8;
uint64_t devid = hmdid | 0x01; // we generate a devid with low byte 0 for the HMD, 1 for the position sensor
mHWID.Truncate();
mHWID.AppendPrintf("0x%llx", hmdid);
mDeviceId.Truncate();
mDeviceId.AppendPrintf("0x%llx", devid);
mDeviceName.Truncate();
mDeviceName.Append(NS_ConvertASCIItoUTF16(aHMD->GetDeviceName()));
mDeviceName.AppendLiteral(" (Sensor)");
mValid = true;
}
~HMDPositionVRDevice()
{
if (mTracking) {
mHMD->StopSensorTracking();
}
}
virtual already_AddRefed<VRPositionState> GetState() override
{
if (!mTracking) {
mHMD->StartSensorTracking();
mTracking = true;
}
gfx::VRHMDSensorState state = mHMD->GetSensorState();
RefPtr<VRPositionState> obj = new VRPositionState(mParent, state);
return obj.forget();
}
virtual already_AddRefed<VRPositionState> GetImmediateState() override
{
if (!mTracking) {
mHMD->StartSensorTracking();
mTracking = true;
}
gfx::VRHMDSensorState state = mHMD->GetSensorState();
RefPtr<VRPositionState> obj = new VRPositionState(mParent, state);
return obj.forget();
}
virtual void ResetSensor() override
{
mHMD->ZeroSensor();
}
protected:
RefPtr<gfx::VRHMDInfo> mHMD;
bool mTracking;
};
} // namespace
bool
VRDevice::CreateAllKnownVRDevices(nsISupports *aParent, nsTArray<RefPtr<VRDevice>>& aDevices)
{
nsTArray<RefPtr<gfx::VRHMDInfo>> hmds;
gfx::VRHMDManager::GetAllHMDs(hmds);
for (size_t i = 0; i < hmds.Length(); ++i) {
uint32_t sensorBits = hmds[i]->GetSupportedSensorStateBits();
aDevices.AppendElement(new HMDInfoVRDevice(aParent, hmds[i]));
if (sensorBits &
(gfx::VRHMDInfo::State_Position | gfx::VRHMDInfo::State_Orientation))
{
aDevices.AppendElement(new HMDPositionVRDevice(aParent, hmds[i]));
}
}
return true;
}
} // namespace dom
} // namespace mozilla
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