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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_VR_VR_BROWSER_RENDERER_THREAD_H_
#define CHROME_BROWSER_VR_VR_BROWSER_RENDERER_THREAD_H_
#include <memory>
#include "base/cancelable_callback.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/task/single_thread_task_runner.h"
#include "base/threading/thread.h"
#include "chrome/browser/vr/browser_renderer.h"
#include "chrome/browser/vr/model/capturing_state_model.h"
#include "chrome/browser/vr/model/web_vr_model.h"
#include "chrome/browser/vr/vr_export.h"
#include "content/public/browser/web_contents.h"
#include "device/vr/public/mojom/isolated_xr_service.mojom.h"
#include "device/vr/public/mojom/vr_service.mojom.h"
#include "mojo/public/cpp/bindings/remote.h"
namespace vr {
class BrowserUiInterface;
class SchedulerUiInterface;
class GraphicsDelegate;
class VR_EXPORT VRBrowserRendererThread {
public:
VRBrowserRendererThread(
mojo::PendingRemote<device::mojom::ImmersiveOverlay> overlay,
const std::vector<device::mojom::XRViewPtr>& views);
~VRBrowserRendererThread();
void SetFramesThrottled(bool throttled);
// The below function(s) affect(s) whether UI is drawn or not.
void SetVisibleExternalPromptNotification(
ExternalPromptNotificationType prompt);
void SetIndicatorsVisible(bool visible);
void SetCapturingState(const CapturingStateModel& active_capturing,
const CapturingStateModel& background_capturing,
const CapturingStateModel& potential_capturing);
static VRBrowserRendererThread* GetInstanceForTesting();
BrowserRenderer* GetBrowserRendererForTesting();
static void DisableOverlayForTesting();
private:
class DrawState {
public:
// State changing methods.
bool SetPrompt(ExternalPromptNotificationType prompt);
bool SetSpinnerVisible(bool visible);
bool SetIndicatorsVisible(bool visible);
// State querying methods.
bool ShouldDrawUI();
bool ShouldDrawWebXR();
private:
ExternalPromptNotificationType prompt_ =
ExternalPromptNotificationType::kPromptNone;
bool spinner_visible_ = false;
bool indicators_visible_ = false;
};
void OnGraphicsReady(std::unique_ptr<GraphicsDelegate> initializing_graphics);
void OnPose(int request_id, device::mojom::XRRenderInfoPtr data);
bool PreRender();
void SubmitResult(bool success);
void SubmitFrame(int16_t frame_id);
void StartOverlay();
void StopOverlay();
void OnWebXRSubmitted();
void OnSpinnerVisibilityChanged(bool visible);
void OnWebXrTimeoutImminent();
void OnWebXrTimedOut();
void StartWebXrTimeout();
void StopWebXrTimeout();
int GetNextRequestId();
void UpdateOverlayState();
std::unique_ptr<BrowserRenderer> browser_renderer_;
// Raw pointers to objects owned by browser_renderer_:
raw_ptr<GraphicsDelegate, DanglingUntriaged> graphics_ = nullptr;
raw_ptr<BrowserUiInterface, DanglingUntriaged> ui_ = nullptr;
raw_ptr<SchedulerUiInterface, DanglingUntriaged> scheduler_ui_ = nullptr;
DrawState draw_state_;
bool started_ = false;
bool frame_timeout_running_ = true;
bool waiting_for_webxr_frame_ = false;
bool frames_throttled_ = false;
int current_request_id_ = 0;
std::vector<device::mojom::XRViewPtr> default_views_;
mojo::Remote<device::mojom::ImmersiveOverlay> overlay_;
base::CancelableOnceClosure webxr_frame_timeout_closure_;
base::CancelableOnceClosure webxr_spinner_timeout_closure_;
base::OnceClosure pending_overlay_update_;
// This class is effectively a singleton, although it's not actually
// implemented as one. Since tests need to access the thread to post tasks,
// just keep a static reference to the existing instance.
static VRBrowserRendererThread* instance_for_testing_;
scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
base::WeakPtrFactory<VRBrowserRendererThread> weak_ptr_factory_{this};
};
} // namespace vr
#endif // CHROME_BROWSER_VR_VR_BROWSER_RENDERER_THREAD_H_
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