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#include "SDL_internal.h"
22
23#ifndef SDL_VIRTUALJOYSTICK_C_H
24#define SDL_VIRTUALJOYSTICK_C_H
25
26#ifdef SDL_JOYSTICK_VIRTUAL
27
28#include "../SDL_sysjoystick.h"
29
30#define AXES_CHANGED 0x00000001
31#define BALLS_CHANGED 0x00000002
32#define BUTTONS_CHANGED 0x00000004
33#define HATS_CHANGED 0x00000008
34#define TOUCHPADS_CHANGED 0x00000010
35
36/**
37 * Data for a virtual, software-only joystick.
38 */
39typedef struct VirtualSensorEvent
40{
41 SDL_SensorType type;
42 Uint64 sensor_timestamp;
43 float data[3];
44 int num_values;
45} VirtualSensorEvent;
46
47typedef struct joystick_hwdata
48{
49 SDL_JoystickID instance_id;
50 bool attached;
51 char *name;
52 SDL_JoystickType type;
53 SDL_GUID guid;
54 SDL_VirtualJoystickDesc desc;
55 Uint32 changes;
56 Sint16 *axes;
57 bool *buttons;
58 Uint8 *hats;
59 SDL_JoystickBallData *balls;
60 SDL_JoystickTouchpadInfo *touchpads;
61 SDL_JoystickSensorInfo *sensors;
62 bool sensors_enabled;
63 int num_sensor_events;
64 int max_sensor_events;
65 VirtualSensorEvent *sensor_events;
66
67 SDL_Joystick *joystick;
68
69 struct joystick_hwdata *next;
70} joystick_hwdata;
71
72extern SDL_JoystickID SDL_JoystickAttachVirtualInner(const SDL_VirtualJoystickDesc *desc);
73extern bool SDL_JoystickDetachVirtualInner(SDL_JoystickID instance_id);
74
75extern bool SDL_SetJoystickVirtualAxisInner(SDL_Joystick *joystick, int axis, Sint16 value);
76extern bool SDL_SetJoystickVirtualBallInner(SDL_Joystick *joystick, int ball, Sint16 xrel, Sint16 yrel);
77extern bool SDL_SetJoystickVirtualButtonInner(SDL_Joystick *joystick, int button, bool down);
78extern bool SDL_SetJoystickVirtualHatInner(SDL_Joystick *joystick, int hat, Uint8 value);
79extern bool SDL_SetJoystickVirtualTouchpadInner(SDL_Joystick *joystick, int touchpad, int finger, bool down, float x, float y, float pressure);
80extern bool SDL_SendJoystickVirtualSensorDataInner(SDL_Joystick *joystick, SDL_SensorType type, Uint64 sensor_timestamp, const float *data, int num_values);
81
82#endif // SDL_JOYSTICK_VIRTUAL
83
84#endif // SDL_VIRTUALJOYSTICK_C_H
85