Atlas - SDL_udev.h
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[FILE BEGIN]
1/*
2  Simple DirectMedia Layer
3  Copyright (C) 1997-2026 Sam Lantinga <[email protected]>
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 <linux/input.h>
35#include <sys/time.h>
36#include <sys/types.h>
37
38/**
39 *  Device type
40 */
41
42typedef enum
43{
44    SDL_UDEV_DEVICEADDED = 1,
45    SDL_UDEV_DEVICEREMOVED
46} SDL_UDEV_deviceevent;
47
48typedef void (*SDL_UDEV_Callback)(SDL_UDEV_deviceevent udev_type, int udev_class, const char *devpath);
49
50typedef struct SDL_UDEV_CallbackList
51{
52    SDL_UDEV_Callback callback;
53    struct SDL_UDEV_CallbackList *next;
54} SDL_UDEV_CallbackList;
55
56typedef struct SDL_UDEV_Symbols
57{
58    const char *(*udev_device_get_action)(struct udev_device *);
59    const char *(*udev_device_get_devnode)(struct udev_device *);
60    const char *(*udev_device_get_driver)(struct udev_device *);
61    const char *(*udev_device_get_syspath)(struct udev_device *);
62    const char *(*udev_device_get_subsystem)(struct udev_device *);
63    struct udev_device *(*udev_device_get_parent_with_subsystem_devtype)(struct udev_device *udev_device, const char *subsystem, const char *devtype);
64    const char *(*udev_device_get_property_value)(struct udev_device *, const char *);
65    const char *(*udev_device_get_sysattr_value)(struct udev_device *udev_device, const char *sysattr);
66    struct udev_device *(*udev_device_new_from_syspath)(struct udev *, const char *);
67    void (*udev_device_unref)(struct udev_device *);
68    int (*udev_enumerate_add_match_property)(struct udev_enumerate *, const char *, const char *);
69    int (*udev_enumerate_add_match_subsystem)(struct udev_enumerate *, const char *);
70    struct udev_list_entry *(*udev_enumerate_get_list_entry)(struct udev_enumerate *);
71    struct udev_enumerate *(*udev_enumerate_new)(struct udev *);
72    int (*udev_enumerate_scan_devices)(struct udev_enumerate *);
73    void (*udev_enumerate_unref)(struct udev_enumerate *);
74    const char *(*udev_list_entry_get_name)(struct udev_list_entry *);
75    const char *(*udev_list_entry_get_value)(struct udev_list_entry *);
76    struct udev_list_entry *(*udev_list_entry_get_next)(struct udev_list_entry *);
77    int (*udev_monitor_enable_receiving)(struct udev_monitor *);
78    int (*udev_monitor_filter_add_match_subsystem_devtype)(struct udev_monitor *, const char *, const char *);
79    int (*udev_monitor_get_fd)(struct udev_monitor *);
80    struct udev_monitor *(*udev_monitor_new_from_netlink)(struct udev *, const char *);
81    struct udev_device *(*udev_monitor_receive_device)(struct udev_monitor *);
82    void (*udev_monitor_unref)(struct udev_monitor *);
83    struct udev *(*udev_new)(void);
84    void (*udev_unref)(struct udev *);
85    struct udev_device *(*udev_device_new_from_devnum)(struct udev *udev, char type, dev_t devnum);
86    dev_t (*udev_device_get_devnum)(struct udev_device *udev_device);
87
88    struct udev_hwdb *(*udev_hwdb_new)(struct udev *udev);
89    struct udev_hwdb *(*udev_hwdb_unref)(struct udev_hwdb *hwdb);
90    struct udev_list_entry *(*udev_hwdb_get_properties_list_entry)(struct udev_hwdb *hwdb, const char *modalias, unsigned flags);
91
92} SDL_UDEV_Symbols;
93
94typedef struct SDL_UDEV_PrivateData
95{
96    const char *udev_library;
97    SDL_SharedObject *udev_handle;
98    struct udev *udev;
99    struct udev_monitor *udev_mon;
100    int ref_count;
101    SDL_UDEV_CallbackList *first, *last;
102
103    // Function pointers
104    SDL_UDEV_Symbols syms;
105} SDL_UDEV_PrivateData;
106
107extern bool SDL_UDEV_Init(void);
108extern void SDL_UDEV_Quit(void);
109extern void SDL_UDEV_UnloadLibrary(void);
110extern bool SDL_UDEV_LoadLibrary(void);
111extern void SDL_UDEV_Poll(void);
112extern bool SDL_UDEV_Scan(void);
113extern bool SDL_UDEV_GetProductInfo(const char *device_path, struct input_id *inpid, int *class, char **driver);
114extern char *SDL_UDEV_GetProductSerial(const char *device_path);
115extern bool SDL_UDEV_AddCallback(SDL_UDEV_Callback cb);
116extern void SDL_UDEV_DelCallback(SDL_UDEV_Callback cb);
117extern const SDL_UDEV_Symbols *SDL_UDEV_GetUdevSyms(void);
118extern void SDL_UDEV_ReleaseUdevSyms(void);
119
120#endif // HAVE_LIBUDEV_H && HAVE_LINUX_INPUT_H
121
122#endif // SDL_udev_h_
123
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