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Unified Diff: content/browser/vr/vr_device_manager.cc

Issue 829803003: Adding Chrome-side WebVR interface (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Missed one cardboard reference Created 5 years, 6 months ago
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Index: content/browser/vr/vr_device_manager.cc
diff --git a/content/browser/vr/vr_device_manager.cc b/content/browser/vr/vr_device_manager.cc
new file mode 100644
index 0000000000000000000000000000000000000000..476149c27be14ced93cc52a018761a17a9e92a70
--- /dev/null
+++ b/content/browser/vr/vr_device_manager.cc
@@ -0,0 +1,139 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "content/browser/vr/vr_device_manager.h"
+
+#include "base/memory/singleton.h"
+#include "third_party/WebKit/public/platform/modules/vr/WebVR.h"
+
+namespace content {
+
+namespace {
+VRDeviceManager* g_vr_device_manager = nullptr;
+}
+
+VRDeviceManager::VRDeviceManager()
+ : vr_initialized_(false), keep_alive_(false) {
+ bindings_.set_error_handler(this);
+// Register VRDeviceProviders for the current platform
+}
+
+VRDeviceManager::VRDeviceManager(scoped_ptr<VRDeviceProvider> provider)
+ : vr_initialized_(false), keep_alive_(true) {
+ thread_checker_.DetachFromThread();
+ RegisterProvider(provider.Pass());
+ SetInstance(this);
+}
+
+VRDeviceManager::~VRDeviceManager() {
+ DCHECK(thread_checker_.CalledOnValidThread());
+ g_vr_device_manager = nullptr;
+}
+
+void VRDeviceManager::BindRequest(mojo::InterfaceRequest<VRService> request) {
+ VRDeviceManager* device_manager = GetInstance();
+ device_manager->bindings_.AddBinding(device_manager, request.Pass());
+}
+
+void VRDeviceManager::OnConnectionError() {
+ DCHECK(thread_checker_.CalledOnValidThread());
+ if (bindings_.empty() && !keep_alive_) {
+ // Delete the device manager when it has no active connections.
+ delete g_vr_device_manager;
+ }
+}
+
+VRDeviceManager* VRDeviceManager::GetInstance() {
+ if (!g_vr_device_manager)
+ g_vr_device_manager = new VRDeviceManager();
+ return g_vr_device_manager;
+}
+
+void VRDeviceManager::SetInstance(VRDeviceManager* instance) {
+ // Unit tests can create multiple instances but only one should exist at any
+ // given time so g_vr_device_manager should only go from nullptr to
+ // non-nullptr and vica versa.
+ CHECK_NE(!!instance, !!g_vr_device_manager);
+ g_vr_device_manager = instance;
+}
+
+bool VRDeviceManager::HasInstance() {
+ // For testing. Checks to see if a VRDeviceManager instance is active.
+ return !!g_vr_device_manager;
+}
+
+mojo::Array<VRDeviceInfoPtr> VRDeviceManager::GetVRDevices() {
+ DCHECK(thread_checker_.CalledOnValidThread());
+
+ InitializeProviders();
+
+ std::vector<VRDevice*> devices;
+ for (const auto& provider : providers_)
+ provider->GetDevices(devices);
+
+ mojo::Array<VRDeviceInfoPtr> out_devices(0);
+ for (const auto& device : devices) {
+ if (device->id() == VR_DEVICE_LAST_ID)
+ continue;
+
+ if (devices_.find(device->id()) == devices_.end())
+ devices_[device->id()] = device;
+
+ VRDeviceInfoPtr vr_device_info = device->GetVRDevice();
+ if (vr_device_info.is_null())
+ continue;
+
+ vr_device_info->index = device->id();
+ out_devices.push_back(vr_device_info.Pass());
+ }
+
+ return out_devices;
+}
+
+VRDevice* VRDeviceManager::GetDevice(unsigned int index) {
+ DCHECK(thread_checker_.CalledOnValidThread());
+
+ DeviceMap::iterator iter = devices_.find(index);
+ if (iter == devices_.end()) {
+ return nullptr;
+ }
+ return iter->second;
+}
+
+void VRDeviceManager::InitializeProviders() {
+ if (vr_initialized_) {
+ return;
+ }
+
+ for (const auto& provider : providers_)
+ provider->Initialize();
+
+ vr_initialized_ = true;
+}
+
+void VRDeviceManager::RegisterProvider(scoped_ptr<VRDeviceProvider> provider) {
+ providers_.push_back(make_linked_ptr(provider.release()));
+}
+
+void VRDeviceManager::GetDevices(const GetDevicesCallback& callback) {
+ callback.Run(GetVRDevices());
+}
+
+void VRDeviceManager::GetSensorState(uint32_t index,
+ const GetSensorStateCallback& callback) {
+ VRDevice* device = GetDevice(index);
+ if (device) {
+ callback.Run(device->GetSensorState());
+ } else {
+ callback.Run(nullptr);
+ }
+}
+
+void VRDeviceManager::ResetSensor(uint32_t index) {
+ VRDevice* device = GetDevice(index);
+ if (device)
+ device->ResetSensor();
+}
+
+} // namespace content
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