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// Copyright (c) 2011 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 THIRD_PARTY_BLINK_RENDERER_MODULES_GAMEPAD_GAMEPAD_SHARED_MEMORY_READER_H_
#define THIRD_PARTY_BLINK_RENDERER_MODULES_GAMEPAD_GAMEPAD_SHARED_MEMORY_READER_H_
#include <memory>
#include "device/base/synchronization/shared_memory_seqlock_buffer.h"
#include "device/gamepad/public/cpp/gamepads.h"
#include "device/gamepad/public/mojom/gamepad.mojom-blink.h"
#include "device/gamepad/public/mojom/gamepad_hardware_buffer.h"
#include "mojo/public/cpp/bindings/binding.h"
#include "mojo/public/cpp/system/buffer.h"
#include "third_party/blink/public/platform/web_gamepad_listener.h"
#include "third_party/blink/renderer/platform/wtf/noncopyable.h"
namespace blink {
class LocalFrame;
class GamepadSharedMemoryReader : public device::mojom::blink::GamepadObserver {
WTF_MAKE_NONCOPYABLE(GamepadSharedMemoryReader);
public:
explicit GamepadSharedMemoryReader(LocalFrame& frame);
~GamepadSharedMemoryReader() override;
void SampleGamepads(device::Gamepads& gamepads);
void Start(blink::WebGamepadListener* listener);
void Stop();
protected:
void SendStartMessage();
void SendStopMessage();
private:
// device::mojom::blink::GamepadObserver methods.
void GamepadConnected(uint32_t index,
const device::Gamepad& gamepad) override;
void GamepadDisconnected(uint32_t index,
const device::Gamepad& gamepad) override;
void GamepadButtonOrAxisChanged(uint32_t index,
const device::Gamepad& gamepad) override;
base::ReadOnlySharedMemoryRegion renderer_shared_buffer_region_;
base::ReadOnlySharedMemoryMapping renderer_shared_buffer_mapping_;
const device::GamepadHardwareBuffer* gamepad_hardware_buffer_ = nullptr;
bool ever_interacted_with_ = false;
mojo::Binding<device::mojom::blink::GamepadObserver> binding_;
device::mojom::blink::GamepadMonitorPtr gamepad_monitor_;
blink::WebGamepadListener* listener_ = nullptr;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_MODULES_GAMEPAD_GAMEPAD_SHARED_MEMORY_READER_H_
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