1/*
2 Simple DirectMedia Layer
3 Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
4
5 This software is provided 'as-is', without any express or implied
6 warranty. In no event will the authors be held liable for any damages
7 arising from the use of this software.
8
9 Permission is granted to anyone to use this software for any purpose,
10 including commercial applications, and to alter it and redistribute it
11 freely, subject to the following restrictions:
12
13 1. The origin of this software must not be misrepresented; you must not
14 claim that you wrote the original software. If you use this software
15 in a product, an acknowledgment in the product documentation would be
16 appreciated but is not required.
17 2. Altered source versions must be plainly marked as such, and must not be
18 misrepresented as being the original software.
19 3. This notice may not be removed or altered from any source distribution.
20*/
21
22#include "SDL_internal.h"
23
24#ifndef SDL_udev_h_
25#define SDL_udev_h_
26
27#if defined(HAVE_LIBUDEV_H) && defined(HAVE_LINUX_INPUT_H)
28
29#ifndef SDL_USE_LIBUDEV
30#define SDL_USE_LIBUDEV 1
31#endif
32
33#include <libudev.h>
34#include <sys/time.h>
35#include <sys/types.h>
36
37/**
38 * Device type
39 */
40
41typedef enum
42{
43 SDL_UDEV_DEVICEADDED = 1,
44 SDL_UDEV_DEVICEREMOVED
45} SDL_UDEV_deviceevent;
46
47typedef void (*SDL_UDEV_Callback)(SDL_UDEV_deviceevent udev_type, int udev_class, const char *devpath);
48
49typedef struct SDL_UDEV_CallbackList
50{
51 SDL_UDEV_Callback callback;
52 struct SDL_UDEV_CallbackList *next;
53} SDL_UDEV_CallbackList;
54
55typedef struct SDL_UDEV_Symbols
56{
57 const char *(*udev_device_get_action)(struct udev_device *);
58 const char *(*udev_device_get_devnode)(struct udev_device *);
59 const char *(*udev_device_get_syspath)(struct udev_device *);
60 const char *(*udev_device_get_subsystem)(struct udev_device *);
61 struct udev_device *(*udev_device_get_parent_with_subsystem_devtype)(struct udev_device *udev_device, const char *subsystem, const char *devtype);
62 const char *(*udev_device_get_property_value)(struct udev_device *, const char *);
63 const char *(*udev_device_get_sysattr_value)(struct udev_device *udev_device, const char *sysattr);
64 struct udev_device *(*udev_device_new_from_syspath)(struct udev *, const char *);
65 void (*udev_device_unref)(struct udev_device *);
66 int (*udev_enumerate_add_match_property)(struct udev_enumerate *, const char *, const char *);
67 int (*udev_enumerate_add_match_subsystem)(struct udev_enumerate *, const char *);
68 struct udev_list_entry *(*udev_enumerate_get_list_entry)(struct udev_enumerate *);
69 struct udev_enumerate *(*udev_enumerate_new)(struct udev *);
70 int (*udev_enumerate_scan_devices)(struct udev_enumerate *);
71 void (*udev_enumerate_unref)(struct udev_enumerate *);
72 const char *(*udev_list_entry_get_name)(struct udev_list_entry *);
73 struct udev_list_entry *(*udev_list_entry_get_next)(struct udev_list_entry *);
74 int (*udev_monitor_enable_receiving)(struct udev_monitor *);
75 int (*udev_monitor_filter_add_match_subsystem_devtype)(struct udev_monitor *, const char *, const char *);
76 int (*udev_monitor_get_fd)(struct udev_monitor *);
77 struct udev_monitor *(*udev_monitor_new_from_netlink)(struct udev *, const char *);
78 struct udev_device *(*udev_monitor_receive_device)(struct udev_monitor *);
79 void (*udev_monitor_unref)(struct udev_monitor *);
80 struct udev *(*udev_new)(void);
81 void (*udev_unref)(struct udev *);
82 struct udev_device *(*udev_device_new_from_devnum)(struct udev *udev, char type, dev_t devnum);
83 dev_t (*udev_device_get_devnum)(struct udev_device *udev_device);
84} SDL_UDEV_Symbols;
85
86typedef struct SDL_UDEV_PrivateData
87{
88 const char *udev_library;
89 SDL_SharedObject *udev_handle;
90 struct udev *udev;
91 struct udev_monitor *udev_mon;
92 int ref_count;
93 SDL_UDEV_CallbackList *first, *last;
94
95 // Function pointers
96 SDL_UDEV_Symbols syms;
97} SDL_UDEV_PrivateData;
98
99extern bool SDL_UDEV_Init(void);
100extern void SDL_UDEV_Quit(void);
101extern void SDL_UDEV_UnloadLibrary(void);
102extern bool SDL_UDEV_LoadLibrary(void);
103extern void SDL_UDEV_Poll(void);
104extern bool SDL_UDEV_Scan(void);
105extern bool SDL_UDEV_GetProductInfo(const char *device_path, Uint16 *vendor, Uint16 *product, Uint16 *version, int *class);
106extern bool SDL_UDEV_AddCallback(SDL_UDEV_Callback cb);
107extern void SDL_UDEV_DelCallback(SDL_UDEV_Callback cb);
108extern const SDL_UDEV_Symbols *SDL_UDEV_GetUdevSyms(void);
109extern void SDL_UDEV_ReleaseUdevSyms(void);
110
111#endif // HAVE_LIBUDEV_H && HAVE_LINUX_INPUT_H
112
113#endif // SDL_udev_h_
114