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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 DEVICE_HID_HID_SERVICE_WIN_H_
#define DEVICE_HID_HID_SERVICE_WIN_H_
#include <windows.h>
#include <hidclass.h>
extern "C" {
#include <hidsdi.h>
#include <hidpi.h>
}
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/scoped_observer.h"
#include "base/win/scoped_handle.h"
#include "device/core/device_monitor_win.h"
#include "device/hid/hid_device_info.h"
#include "device/hid/hid_service.h"
namespace base {
namespace win {
class MessageWindow;
}
}
namespace device {
class HidServiceWin : public HidService, public DeviceMonitorWin::Observer {
public:
HidServiceWin(scoped_refptr<base::SingleThreadTaskRunner> file_task_runner);
void Connect(const HidDeviceId& device_id,
const ConnectCallback& callback) override;
private:
~HidServiceWin() override;
static void EnumerateOnFileThread(
base::WeakPtr<HidServiceWin> service,
scoped_refptr<base::SingleThreadTaskRunner> task_runner);
static void CollectInfoFromButtonCaps(PHIDP_PREPARSED_DATA preparsed_data,
HIDP_REPORT_TYPE report_type,
USHORT button_caps_length,
HidCollectionInfo* collection_info);
static void CollectInfoFromValueCaps(PHIDP_PREPARSED_DATA preparsed_data,
HIDP_REPORT_TYPE report_type,
USHORT value_caps_length,
HidCollectionInfo* collection_info);
static void AddDeviceOnFileThread(
base::WeakPtr<HidServiceWin> service,
scoped_refptr<base::SingleThreadTaskRunner> task_runner,
const std::string& device_path);
// DeviceMonitorWin::Observer implementation:
void OnDeviceAdded(const GUID& class_guid,
const std::string& device_path) override;
void OnDeviceRemoved(const GUID& class_guid,
const std::string& device_path) override;
// Tries to open the device read-write and falls back to read-only.
static base::win::ScopedHandle OpenDevice(const std::string& device_path);
scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
scoped_refptr<base::SingleThreadTaskRunner> file_task_runner_;
ScopedObserver<DeviceMonitorWin, DeviceMonitorWin::Observer> device_observer_;
base::WeakPtrFactory<HidServiceWin> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(HidServiceWin);
};
} // namespace device
#endif // DEVICE_HID_HID_SERVICE_WIN_H_
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