content/browser/vr/vr_device_manager.h

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_BROWSER_VR_VR_DEVICE_MANAGER_H
   6 #define CONTENT_BROWSER_VR_VR_DEVICE_MANAGER_H
   7
   8 #include <map>
   9 #include <vector>
  10
  11 #include "base/basictypes.h"
  12 #include "base/memory/linked_ptr.h"
  13 #include "base/memory/scoped_ptr.h"
  14 #include "base/threading/thread_checker.h"
  15 #include "content/browser/vr/vr_device.h"
  16 #include "content/browser/vr/vr_device_provider.h"
  17 #include "content/common/content_export.h"
  18 #include "content/common/vr_service.mojom.h"
  19 #include "mojo/common/weak_binding_set.h"
  20
  21 namespace content {
  22
  23 class VRDeviceManager : public VRService, public mojo::ErrorHandler {
  24  public:
  25   ~VRDeviceManager() override;
  26
  27   static void BindRequest(mojo::InterfaceRequest<VRService> request);
  28
  29   // Returns the VRDeviceManager singleton.
  30   static VRDeviceManager* GetInstance();
  31
  32   mojo::Array<VRDeviceInfoPtr> GetVRDevices();
  33   VRDevice* GetDevice(unsigned int index);
  34
  35  private:
  36   friend class VRDeviceManagerTest;
  37
  38   VRDeviceManager();
  39   // Constructor for testing.
  40   explicit VRDeviceManager(scoped_ptr<VRDeviceProvider> provider);
  41
  42   static void SetInstance(VRDeviceManager* service);
  43   static bool HasInstance();
  44
  45   void InitializeProviders();
  46   void RegisterProvider(scoped_ptr<VRDeviceProvider> provider);
  47
  48   // VRService implementation
  49   void GetDevices(const GetDevicesCallback& callback) override;
  50   void GetSensorState(uint32_t index,
  51                       const GetSensorStateCallback& callback) override;
  52   void ResetSensor(uint32_t index) override;
  53
  54   // mojo::ErrorHandler implementation
  55   void OnConnectionError() override;
  56
  57   using ProviderList = std::vector<linked_ptr<VRDeviceProvider>>;
  58   ProviderList providers_;
  59
  60   // Devices are owned by their providers.
  61   using DeviceMap = std::map<unsigned int, VRDevice*>;
  62   DeviceMap devices_;
  63
  64   bool vr_initialized_;
  65
  66   mojo::WeakBindingSet<VRService> bindings_;
  67
  68   // For testing. If true will not delete self when consumer count reaches 0.
  69   bool keep_alive_;
  70
  71   base::ThreadChecker thread_checker_;
  72
  73   DISALLOW_COPY_AND_ASSIGN(VRDeviceManager);
  74 };
  75
  76 }  // namespace content
  77
  78 #endif  // CONTENT_BROWSER_VR_VR_DEVICE_MANAGER_H