gecko-dev/gfx/vr/VRDeviceProxy.cpp

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4.5 KiB
C++

/* -*- 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 "VRDeviceProxy.h"
#include "VRManagerChild.h"
using namespace mozilla;
using namespace mozilla::gfx;
VRDeviceProxy::VRDeviceProxy(const VRDeviceUpdate& aDeviceUpdate)
: mDeviceInfo(aDeviceUpdate.mDeviceInfo)
, mSensorState(aDeviceUpdate.mSensorState)
{
MOZ_COUNT_CTOR(VRDeviceProxy);
if (mDeviceInfo.mScreenRect.width && mDeviceInfo.mScreenRect.height) {
if (mDeviceInfo.mIsFakeScreen) {
mScreen = MakeFakeScreen(mDeviceInfo.mScreenRect);
} else {
nsCOMPtr<nsIScreenManager> screenmgr = do_GetService("@mozilla.org/gfx/screenmanager;1");
if (screenmgr) {
screenmgr->ScreenForRect(mDeviceInfo.mScreenRect.x, mDeviceInfo.mScreenRect.y,
mDeviceInfo.mScreenRect.width, mDeviceInfo.mScreenRect.height,
getter_AddRefs(mScreen));
}
}
#ifdef DEBUG
printf_stderr("VR DEVICE SCREEN: %d %d %d %d\n",
mDeviceInfo.mScreenRect.x, mDeviceInfo.mScreenRect.y,
mDeviceInfo.mScreenRect.width, mDeviceInfo.mScreenRect.height);
#endif
}
}
VRDeviceProxy::~VRDeviceProxy() {
MOZ_COUNT_DTOR(VRDeviceProxy);
}
void
VRDeviceProxy::UpdateDeviceInfo(const VRDeviceUpdate& aDeviceUpdate)
{
mDeviceInfo = aDeviceUpdate.mDeviceInfo;
mSensorState = aDeviceUpdate.mSensorState;
}
bool
VRDeviceProxy::SetFOV(const VRFieldOfView& aFOVLeft, const VRFieldOfView& aFOVRight,
double zNear, double zFar)
{
VRManagerChild *vm = VRManagerChild::Get();
vm->SendSetFOV(mDeviceInfo.mDeviceID, aFOVLeft, aFOVRight, zNear, zFar);
return true;
}
void
VRDeviceProxy::ZeroSensor()
{
VRManagerChild *vm = VRManagerChild::Get();
vm->SendResetSensor(mDeviceInfo.mDeviceID);
}
VRHMDSensorState
VRDeviceProxy::GetSensorState(double timeOffset)
{
VRManagerChild *vm = VRManagerChild::Get();
Unused << vm->SendKeepSensorTracking(mDeviceInfo.mDeviceID);
return mSensorState;
}
void
VRDeviceProxy::UpdateSensorState(const VRHMDSensorState& aSensorState)
{
mSensorState = aSensorState;
}
// Dummy nsIScreen implementation, for when we just need to specify a size
class FakeScreen : public nsIScreen
{
public:
explicit FakeScreen(const IntRect& aScreenRect)
: mScreenRect(aScreenRect)
{ }
NS_DECL_ISUPPORTS
NS_IMETHOD GetRect(int32_t *l, int32_t *t, int32_t *w, int32_t *h) override {
*l = mScreenRect.x;
*t = mScreenRect.y;
*w = mScreenRect.width;
*h = mScreenRect.height;
return NS_OK;
}
NS_IMETHOD GetAvailRect(int32_t *l, int32_t *t, int32_t *w, int32_t *h) override {
return GetRect(l, t, w, h);
}
NS_IMETHOD GetRectDisplayPix(int32_t *l, int32_t *t, int32_t *w, int32_t *h) override {
return GetRect(l, t, w, h);
}
NS_IMETHOD GetAvailRectDisplayPix(int32_t *l, int32_t *t, int32_t *w, int32_t *h) override {
return GetAvailRect(l, t, w, h);
}
NS_IMETHOD GetId(uint32_t* aId) override { *aId = (uint32_t)-1; return NS_OK; }
NS_IMETHOD GetPixelDepth(int32_t* aPixelDepth) override { *aPixelDepth = 24; return NS_OK; }
NS_IMETHOD GetColorDepth(int32_t* aColorDepth) override { *aColorDepth = 24; return NS_OK; }
NS_IMETHOD LockMinimumBrightness(uint32_t aBrightness) override { return NS_ERROR_NOT_AVAILABLE; }
NS_IMETHOD UnlockMinimumBrightness(uint32_t aBrightness) override { return NS_ERROR_NOT_AVAILABLE; }
NS_IMETHOD GetRotation(uint32_t* aRotation) override {
*aRotation = nsIScreen::ROTATION_0_DEG;
return NS_OK;
}
NS_IMETHOD SetRotation(uint32_t aRotation) override { return NS_ERROR_NOT_AVAILABLE; }
NS_IMETHOD GetContentsScaleFactor(double* aContentsScaleFactor) override {
*aContentsScaleFactor = 1.0;
return NS_OK;
}
protected:
virtual ~FakeScreen() {}
IntRect mScreenRect;
};
NS_IMPL_ISUPPORTS(FakeScreen, nsIScreen)
/* static */ already_AddRefed<nsIScreen>
VRDeviceProxy::MakeFakeScreen(const IntRect& aScreenRect)
{
nsCOMPtr<nsIScreen> screen = new FakeScreen(aScreenRect);
return screen.forget();
}