1/**************************************************************************/
2/* joypad_linux.h */
3/**************************************************************************/
4/* This file is part of: */
5/* GODOT ENGINE */
6/* https://godotengine.org */
7/**************************************************************************/
8/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
9/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
10/* */
11/* Permission is hereby granted, free of charge, to any person obtaining */
12/* a copy of this software and associated documentation files (the */
13/* "Software"), to deal in the Software without restriction, including */
14/* without limitation the rights to use, copy, modify, merge, publish, */
15/* distribute, sublicense, and/or sell copies of the Software, and to */
16/* permit persons to whom the Software is furnished to do so, subject to */
17/* the following conditions: */
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19/* The above copyright notice and this permission notice shall be */
20/* included in all copies or substantial portions of the Software. */
21/* */
22/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
23/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
24/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. */
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27/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
28/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
29/**************************************************************************/
30
31#ifndef JOYPAD_LINUX_H
32#define JOYPAD_LINUX_H
33
34#ifdef JOYDEV_ENABLED
35
36#include "core/input/input.h"
37#include "core/os/mutex.h"
38#include "core/os/thread.h"
39#include "core/templates/local_vector.h"
40
41struct input_absinfo;
42
43class JoypadLinux {
44public:
45 JoypadLinux(Input *in);
46 ~JoypadLinux();
47 void process_joypads();
48
49private:
50 enum {
51 JOYPADS_MAX = 16,
52 MAX_ABS = 63,
53 MAX_KEY = 767, // Hack because <linux/input.h> can't be included here
54 };
55
56 struct JoypadEvent {
57 uint16_t type;
58 uint16_t code;
59 int32_t value;
60 };
61
62 struct Joypad {
63 float curr_axis[MAX_ABS];
64 int key_map[MAX_KEY];
65 int abs_map[MAX_ABS];
66 BitField<HatMask> dpad;
67 int fd = -1;
68
69 String devpath;
70 input_absinfo *abs_info[MAX_ABS] = {};
71
72 bool force_feedback = false;
73 int ff_effect_id = 0;
74 uint64_t ff_effect_timestamp = 0;
75
76 LocalVector<JoypadEvent> events;
77
78 ~Joypad();
79 void reset();
80 };
81
82#ifdef UDEV_ENABLED
83 bool use_udev = false;
84#endif
85 Input *input = nullptr;
86
87 SafeFlag monitor_joypads_exit;
88 SafeFlag joypad_events_exit;
89 Thread monitor_joypads_thread;
90 Thread joypad_events_thread;
91
92 Joypad joypads[JOYPADS_MAX];
93 Mutex joypads_mutex[JOYPADS_MAX];
94
95 Vector<String> attached_devices;
96
97 static void monitor_joypads_thread_func(void *p_user);
98 void monitor_joypads_thread_run();
99
100 void open_joypad(const char *p_path);
101 void setup_joypad_properties(Joypad &p_joypad);
102
103 void close_joypads();
104 void close_joypad(const char *p_devpath);
105 void close_joypad(Joypad &p_joypad, int p_id);
106
107#ifdef UDEV_ENABLED
108 void enumerate_joypads(struct udev *p_udev);
109 void monitor_joypads(struct udev *p_udev);
110#endif
111 void monitor_joypads();
112
113 void joypad_vibration_start(Joypad &p_joypad, float p_weak_magnitude, float p_strong_magnitude, float p_duration, uint64_t p_timestamp);
114 void joypad_vibration_stop(Joypad &p_joypad, uint64_t p_timestamp);
115
116 static void joypad_events_thread_func(void *p_user);
117 void joypad_events_thread_run();
118
119 float axis_correct(const input_absinfo *p_abs, int p_value) const;
120};
121
122#endif // JOYDEV_ENABLED
123
124#endif // JOYPAD_LINUX_H
125