device/vr/openxr/openxr_device.h

// Copyright 2019 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.

#ifndef DEVICE_VR_OPENXR_OPENXR_DEVICE_H_
#define DEVICE_VR_OPENXR_OPENXR_DEVICE_H_

#include <memory>

#include "base/macros.h"
#include "device/vr/public/mojom/vr_service.mojom.h"
#include "device/vr/vr_device_base.h"
#include "mojo/public/cpp/bindings/pending_receiver.h"

namespace device {

class OpenXrRenderLoop;

class DEVICE_VR_EXPORT OpenXrDevice
    : public VRDeviceBase,
      public mojom::XRSessionController,
      public mojom::IsolatedXRGamepadProviderFactory,
      public mojom::XRCompositorHost {
 public:
  OpenXrDevice();
  ~OpenXrDevice() override;

  static bool IsHardwareAvailable();
  static bool IsApiAvailable();

  // VRDeviceBase
  void RequestSession(
      mojom::XRRuntimeSessionOptionsPtr options,
      mojom::XRRuntime::RequestSessionCallback callback) override;

  mojom::IsolatedXRGamepadProviderFactoryPtr BindGamepadFactory();
  mojom::XRCompositorHostPtr BindCompositorHost();

 private:
  // XRSessionController
  void SetFrameDataRestricted(bool restricted) override;

  // mojom::IsolatedXRGamepadProviderFactory
  void GetIsolatedXRGamepadProvider(
      mojo::PendingReceiver<mojom::IsolatedXRGamepadProvider> provider_receiver)
      override;

  // XRCompositorHost
  void CreateImmersiveOverlay(
      mojo::PendingReceiver<mojom::ImmersiveOverlay> overlay_receiver) override;

  void EnsureRenderLoop();

  void OnRequestSessionResult(mojom::XRRuntime::RequestSessionCallback callback,
                              bool result,
                              mojom::XRSessionPtr session);
  void OnPresentingControllerMojoConnectionError();

  std::unique_ptr<OpenXrRenderLoop> render_loop_;

  mojo::Binding<mojom::XRSessionController> exclusive_controller_binding_;

  mojo::Binding<mojom::IsolatedXRGamepadProviderFactory>
      gamepad_provider_factory_binding_;
  mojo::PendingReceiver<mojom::IsolatedXRGamepadProvider> provider_receiver_;

  mojo::Binding<mojom::XRCompositorHost> compositor_host_binding_;
  mojo::PendingReceiver<mojom::ImmersiveOverlay> overlay_receiver_;

  base::WeakPtrFactory<OpenXrDevice> weak_ptr_factory_;

  DISALLOW_COPY_AND_ASSIGN(OpenXrDevice);
};

}  // namespace device

#endif  // DEVICE_VR_OPENXR_OPENXR_DEVICE_H_