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// Copyright 2014 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_PUBLIC_GPU_PLATFORM_SUPPORT_HOST_H_
#define UI_OZONE_PUBLIC_GPU_PLATFORM_SUPPORT_HOST_H_
#include "base/memory/ref_counted.h"
#include "base/single_thread_task_runner.h"
#include "ipc/ipc_listener.h"
#include "ipc/ipc_sender.h"
#include "ui/ozone/ozone_base_export.h"
namespace ui {
// Platform-specific object to support a GPU process host.
//
// ChromeOS on bare hardware will do display configuration and cursor
// movement from the GPU process. This provides a conduit for the
// messages needed to make this work.
//
// Under X11, we don't need any GPU messages for display configuration.
// That's why there's no real functionality here: it's purely mechanism
// to support additional messages needed by specific platforms.
class OZONE_BASE_EXPORT GpuPlatformSupportHost : public IPC::Listener {
public:
GpuPlatformSupportHost();
~GpuPlatformSupportHost() override;
// Called when the GPU process is spun up & channel established.
virtual void OnChannelEstablished(
int host_id,
scoped_refptr<base::SingleThreadTaskRunner> send_runner,
const base::Callback<void(IPC::Message*)>& sender) = 0;
// Called when the GPU process is destroyed.
virtual void OnChannelDestroyed(int host_id) = 0;
};
// create a stub implementation.
OZONE_BASE_EXPORT GpuPlatformSupportHost* CreateStubGpuPlatformSupportHost();
} // namespace ui
#endif // UI_OZONE_PUBLIC_GPU_PLATFORM_SUPPORT_HOST_H_
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