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// 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 UI_OZONE_PLATFORM_SCENIC_SCENIC_GPU_HOST_H_
#define UI_OZONE_PLATFORM_SCENIC_SCENIC_GPU_HOST_H_
#include <inttypes.h>
#include "base/callback.h"
#include "base/macros.h"
#include "base/memory/weak_ptr.h"
#include "base/single_thread_task_runner.h"
#include "base/threading/thread_checker.h"
#include "mojo/public/cpp/bindings/binding.h"
#include "ui/ozone/public/gpu_platform_support_host.h"
#include "ui/ozone/public/interfaces/scenic_gpu_host.mojom.h"
#include "ui/ozone/public/interfaces/scenic_gpu_service.mojom.h"
namespace ui {
class ScenicWindowManager;
// Browser process object which supports a GPU process host.
//
// Once a GPU process starts, this objects binds to it over mojo and
// enables exchange of Scenic resources with it. In particular, we must
// exchange export tokens for each view surface, so that the surface can
// present to Scenic views managed by the browser.
class ScenicGpuHost : public mojom::ScenicGpuHost,
public GpuPlatformSupportHost {
public:
ScenicGpuHost(ScenicWindowManager* scenic_window_manager);
~ScenicGpuHost() override;
// Creates browser process binding. This is used to create a software output
// on the UI thread.
mojom::ScenicGpuHostPtr CreateHostProcessSelfBinding();
// mojom::ScenicGpuHost:
void ExportParent(int32_t surface_handle,
mojo::ScopedHandle export_token_mojo) override;
// GpuPlatformSupportHost:
void OnGpuProcessLaunched(
int host_id,
scoped_refptr<base::SingleThreadTaskRunner> ui_runner,
scoped_refptr<base::SingleThreadTaskRunner> send_runner,
const base::RepeatingCallback<void(IPC::Message*)>& send_callback)
override;
void OnChannelDestroyed(int host_id) override;
void OnMessageReceived(const IPC::Message& message) override;
void OnGpuServiceLaunched(
scoped_refptr<base::SingleThreadTaskRunner> ui_runner,
scoped_refptr<base::SingleThreadTaskRunner> io_runner,
GpuHostBindInterfaceCallback binder,
GpuHostTerminateCallback terminate_callback) override;
private:
void OnGpuServiceLaunchedOnUI(
mojo::InterfacePtrInfo<mojom::ScenicGpuService> gpu_service_ptr_info);
void UpdateBinding(uint32_t service_launch_count,
mojom::ScenicGpuHostRequest scenic_gpu_host_request);
ScenicWindowManager* const scenic_window_manager_;
mojo::Binding<mojom::ScenicGpuHost> host_binding_;
mojo::Binding<mojom::ScenicGpuHost> gpu_binding_;
mojom::ScenicGpuServicePtr gpu_service_;
scoped_refptr<base::SingleThreadTaskRunner> ui_thread_runner_;
THREAD_CHECKER(ui_thread_checker_);
THREAD_CHECKER(io_thread_checker_);
base::WeakPtrFactory<ScenicGpuHost> weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(ScenicGpuHost);
};
} // namespace ui
#endif // UI_OZONE_PLATFORM_SCENIC_SCENIC_GPU_HOST_H_
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