gecko-dev/gfx/vr/gfxVRCardboard.h

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2.6 KiB
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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/. */
#ifndef GFX_VR_CARDBOARD_H
#define GFX_VR_CARDBOARD_H
#include "mozilla/gfx/2D.h"
#include "mozilla/gfx/Quaternion.h"
#include "mozilla/EnumeratedArray.h"
#include "mozilla/HalSensor.h"
#include "mozilla/HalScreenConfiguration.h"
#include "gfxVR.h"
namespace mozilla {
namespace gfx {
namespace impl {
class HMDInfoCardboard :
public VRHMDInfo,
public hal::ISensorObserver,
public hal::ScreenConfigurationObserver
{
public:
explicit HMDInfoCardboard();
bool SetFOV(const VRFieldOfView& aFOVLeft, const VRFieldOfView& aFOVRight,
double zNear, double zFar) override;
bool StartSensorTracking() override;
VRHMDSensorState GetSensorState(double timeOffset) override;
void StopSensorTracking() override;
void ZeroSensor() override;
void FillDistortionConstants(uint32_t whichEye,
const IntSize& textureSize, const IntRect& eyeViewport,
const Size& destViewport, const Rect& destRect,
VRDistortionConstants& values) override;
void Destroy();
// ISensorObserver interface
void Notify(const hal::SensorData& SensorData) override;
// ScreenConfigurationObserver interface
void Notify(const hal::ScreenConfiguration& ScreenConfiguration) override;
protected:
// must match the size of VRDistortionVertex
struct DistortionVertex {
float pos[2];
float texR[2];
float texG[2];
float texB[2];
float padding[4];
};
virtual ~HMDInfoCardboard() {
Destroy();
}
void ComputeStateFromLastSensor();
uint32_t mStartCount;
VRHMDSensorState mLastSensorState;
uint32_t mOrient;
Quaternion mScreenTransform;
Quaternion mSensorZeroInverse;
Quaternion mSavedLastSensor;
double mSavedLastSensorTime;
bool mNeedsSensorCompute; // if we need to compute the state from mSavedLastSensor
};
} // namespace impl
class VRHMDManagerCardboard : public VRHMDManager
{
public:
VRHMDManagerCardboard()
: mCardboardInitialized(false)
{ }
virtual bool PlatformInit() override;
virtual bool Init() override;
virtual void Destroy() override;
virtual void GetHMDs(nsTArray<nsRefPtr<VRHMDInfo> >& aHMDResult) override;
protected:
nsTArray<nsRefPtr<impl::HMDInfoCardboard>> mCardboardHMDs;
bool mCardboardInitialized;
};
} // namespace gfx
} // namespace mozilla
#endif /* GFX_VR_CARDBOARD_H */