blob: 06cad8a0a4c8d0834b0e8bd29a0faca7a4ca22d0 [file] [log] [blame]
// 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.
#include <memory>
#include <string>
#include "base/strings/string_piece.h"
extern "C" {
struct udev_device;
namespace device {
class UdevGamepadLinux {
enum class Type {
static const char kInputSubsystem[];
static const char kHidrawSubsystem[];
UdevGamepadLinux(Type type,
int index,
base::StringPiece path,
base::StringPiece syspath_prefix);
~UdevGamepadLinux() = default;
// Factory method for creating UdevGamepadLinux instances. Extracts info
// about the device and returns a UdevGamepadLinux describing it, or nullptr
// if the device cannot be a gamepad.
static std::unique_ptr<UdevGamepadLinux> Create(udev_device* dev);
// The kernel interface used to communicate with this device.
const Type type;
// The index of this device node among nodes of this type. For instance, a
// device with |path| /dev/input/js3 has |index| 3.
const int index;
// The filesystem path of the device node representing this device.
const std::string path;
// A string identifier used to identify device nodes that refer to the same
// physical device. For nodes in the input subsystem (joydev and evdev), the
// |syspath_prefix| is a prefix of the syspath of the parent node. For hidraw
// nodes, it is a prefix of the node's syspath. |syspath_prefix| is empty if
// the syspath could not be queried (usually this indicates the device has
// been disconnected).
const std::string syspath_prefix;
} // namespace device