camera/include/cros-camera/scoped_udev.h

/*
 * Copyright 2018 The Chromium OS 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 CAMERA_INCLUDE_CROS_CAMERA_SCOPED_UDEV_H_
#define CAMERA_INCLUDE_CROS_CAMERA_SCOPED_UDEV_H_

#include <memory>

#include <libudev.h>

namespace cros {

struct UdevDeleter {
  void operator()(udev* dev) const { udev_unref(dev); }
};

struct UdevEnumerateDeleter {
  void operator()(udev_enumerate* enumerate) const {
    udev_enumerate_unref(enumerate);
  }
};

struct UdevDeviceDeleter {
  void operator()(udev_device* device) const { udev_device_unref(device); }
};

struct UdevMonitorDeleter {
  void operator()(udev_monitor* monitor) const { udev_monitor_unref(monitor); }
};

typedef std::unique_ptr<udev, UdevDeleter> ScopedUdevPtr;
typedef std::unique_ptr<udev_enumerate, UdevEnumerateDeleter>
    ScopedUdevEnumeratePtr;
typedef std::unique_ptr<udev_device, UdevDeviceDeleter> ScopedUdevDevicePtr;
typedef std::unique_ptr<udev_monitor, UdevMonitorDeleter> ScopedUdevMonitorPtr;

}  // namespace cros

#endif  // CAMERA_INCLUDE_CROS_CAMERA_SCOPED_UDEV_H_