1 /*
2   Simple DirectMedia Layer
3   Copyright (C) 1997-2020 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 #ifndef SDL_sysjoystick_c_h_
23 #define SDL_sysjoystick_c_h_
24 
25 #include <linux/input.h>
26 
27 struct SDL_joylist_item;
28 
29 /* The private structure used to keep track of a joystick */
30 struct joystick_hwdata
31 {
32     int fd;
33     struct SDL_joylist_item *item;
34     SDL_JoystickGUID guid;
35     char *fname;                /* Used in haptic subsystem */
36 
37     SDL_bool ff_rumble;
38     SDL_bool ff_sine;
39     struct ff_effect effect;
40     Uint32 effect_expiration;
41 
42     /* The current Linux joystick driver maps hats to two axes */
43     struct hwdata_hat
44     {
45         int axis[2];
46     } *hats;
47     /* The current Linux joystick driver maps balls to two axes */
48     struct hwdata_ball
49     {
50         int axis[2];
51     } *balls;
52 
53     /* Support for the Linux 2.4 unified input interface */
54     Uint8 key_map[KEY_MAX];
55     Uint8 abs_map[ABS_MAX];
56     SDL_bool has_key[KEY_MAX];
57     SDL_bool has_abs[ABS_MAX];
58 
59     struct axis_correct
60     {
61         int used;
62         int coef[3];
63     } abs_correct[ABS_MAX];
64 
65     SDL_bool fresh;
66     SDL_bool recovering_from_dropped;
67 
68     /* Steam Controller support */
69     SDL_bool m_bSteamController;
70     /* 4 = (ABS_HAT3X-ABS_HAT0X)/2 (see input-event-codes.h in kernel) */
71     int hats_indices[4];
72     SDL_bool has_hat[4];
73 
74     /* Set when gamepad is pending removal due to ENODEV read error */
75     SDL_bool gone;
76 };
77 
78 #endif /* SDL_sysjoystick_c_h_ */
79 
80 /* vi: set ts=4 sw=4 expandtab: */
81