content/services/isolated_xr_device/xr_test_hook_wrapper.h

// Copyright 2018 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 CONTENT_SERVICES_ISOLATED_XR_DEVICE_XR_TEST_HOOK_WRAPPER_H_
#define CONTENT_SERVICES_ISOLATED_XR_DEVICE_XR_TEST_HOOK_WRAPPER_H_

#include "device/vr/public/mojom/browser_test_interfaces.mojom.h"
#include "device/vr/test/test_hook.h"
#include "mojo/public/cpp/bindings/pending_remote.h"
#include "mojo/public/cpp/bindings/remote.h"

namespace device {

// Wraps a mojo test hook to implement the VRTestHook C++ interface.  Our use
// of VR runtimes are single-threaded at a time, and we initialize/uninitialize
// as we switch between immersive and non-immersive sessions.
// The mojo pointer is thread-affine, but we can keep the same mojo connection
// by getting its pending remote so we temporarily make the test hook mojo
// pointer live on the thread that we are using the VR runtime on while the
// runtime is initialized.
class XRTestHookWrapper : public VRTestHook {
 public:
  explicit XRTestHookWrapper(
      mojo::PendingRemote<device_test::mojom::XRTestHook> hook_info);
  virtual ~XRTestHookWrapper();

  void OnFrameSubmitted(SubmittedFrameData frame_data) override;
  DeviceConfig WaitGetDeviceConfig() override;
  PoseFrameData WaitGetPresentingPose() override;
  PoseFrameData WaitGetMagicWindowPose() override;
  ControllerRole WaitGetControllerRoleForTrackedDeviceIndex(
      unsigned int index) override;
  TrackedDeviceClass WaitGetTrackedDeviceClass(unsigned int index) override;
  ControllerFrameData WaitGetControllerData(unsigned int index) override;
  device_test::mojom::EventData WaitGetEventData() override;
  void AttachCurrentThread() override;
  void DetachCurrentThread() override;

  scoped_refptr<base::SingleThreadTaskRunner> GetBoundTaskRunner();

 private:
  mojo::Remote<device_test::mojom::XRTestHook> hook_;
  mojo::PendingRemote<device_test::mojom::XRTestHook> pending_hook_;
  scoped_refptr<base::SingleThreadTaskRunner> current_task_runner_;
};

}  // namespace device

#endif  // CONTENT_SERVICES_ISOLATED_XR_DEVICE_XR_TEST_HOOK_WRAPPER_H_