Atlas - testhotplug.c
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[FILE BEGIN]
1/*
2  Copyright (C) 1997-2025 Sam Lantinga <[email protected]>
3
4  This software is provided 'as-is', without any express or implied
5  warranty.  In no event will the authors be held liable for any damages
6  arising from the use of this software.
7
8  Permission is granted to anyone to use this software for any purpose,
9  including commercial applications, and to alter it and redistribute it
10  freely.
11*/
12
13/* Simple program to test the SDL joystick hotplugging */
14
15#include <stdlib.h>
16
17#include <SDL3/SDL.h>
18#include <SDL3/SDL_main.h>
19#include <SDL3/SDL_test.h>
20
21int main(int argc, char *argv[])
22{
23    int num_keyboards = 0;
24    int num_mice = 0;
25    int num_joysticks = 0;
26    SDL_Joystick *joystick = NULL;
27    SDL_Haptic *haptic = NULL;
28    SDL_JoystickID instance = 0;
29    bool keepGoing = true;
30    int i;
31    bool enable_haptic = true;
32    Uint32 init_subsystems = SDL_INIT_VIDEO | SDL_INIT_JOYSTICK;
33    SDLTest_CommonState *state;
34
35    /* Initialize test framework */
36    state = SDLTest_CommonCreateState(argv, 0);
37    if (!state) {
38        return 1;
39    }
40
41    /* Parse commandline */
42    for (i = 1; i < argc;) {
43        int consumed;
44
45        consumed = SDLTest_CommonArg(state, i);
46        if (!consumed) {
47            if (SDL_strcasecmp(argv[i], "--nohaptic") == 0) {
48                enable_haptic = false;
49                consumed = 1;
50            }
51        }
52        if (consumed <= 0) {
53            static const char *options[] = { "[--nohaptic]", NULL };
54            SDLTest_CommonLogUsage(state, argv[0], options);
55            exit(1);
56        }
57
58        i += consumed;
59    }
60
61    if (enable_haptic) {
62        init_subsystems |= SDL_INIT_HAPTIC;
63    }
64
65    SDL_SetHint(SDL_HINT_JOYSTICK_ALLOW_BACKGROUND_EVENTS, "1");
66
67    /* Initialize SDL (Note: video is required to start event loop) */
68    if (!SDL_Init(init_subsystems)) {
69        SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't initialize SDL: %s", SDL_GetError());
70        exit(1);
71    }
72
73    /*
74    //SDL_CreateWindow("Dummy", 128, 128, 0);
75    */
76
77    SDL_free(SDL_GetKeyboards(&num_keyboards));
78    SDL_Log("There are %d keyboards at startup", num_keyboards);
79
80    SDL_free(SDL_GetMice(&num_mice));
81    SDL_Log("There are %d mice at startup", num_mice);
82
83    SDL_free(SDL_GetJoysticks(&num_joysticks));
84    SDL_Log("There are %d joysticks at startup", num_joysticks);
85
86    if (enable_haptic) {
87        int num_haptics;
88        SDL_free(SDL_GetHaptics(&num_haptics));
89        SDL_Log("There are %d haptic devices at startup", num_haptics);
90    }
91
92    while (keepGoing) {
93        SDL_Event event;
94        while (SDL_PollEvent(&event)) {
95            switch (event.type) {
96            case SDL_EVENT_QUIT:
97                keepGoing = false;
98                break;
99            case SDL_EVENT_KEY_DOWN:
100                if (event.key.scancode == SDL_SCANCODE_ESCAPE) {
101                    keepGoing = false;
102                }
103                break;
104            case SDL_EVENT_KEYBOARD_ADDED:
105                SDL_Log("Keyboard '%s' added  : %" SDL_PRIu32, SDL_GetKeyboardNameForID(event.kdevice.which), event.kdevice.which);
106                break;
107            case SDL_EVENT_KEYBOARD_REMOVED:
108                SDL_Log("Keyboard removed: %" SDL_PRIu32, event.kdevice.which);
109                break;
110            case SDL_EVENT_MOUSE_ADDED:
111                SDL_Log("Mouse '%s' added  : %" SDL_PRIu32, SDL_GetMouseNameForID(event.mdevice.which), event.mdevice.which);
112                break;
113            case SDL_EVENT_MOUSE_REMOVED:
114                SDL_Log("Mouse removed: %" SDL_PRIu32, event.mdevice.which);
115                break;
116            case SDL_EVENT_JOYSTICK_ADDED:
117                if (joystick) {
118                    SDL_Log("Only one joystick supported by this test");
119                } else {
120                    joystick = SDL_OpenJoystick(event.jdevice.which);
121                    instance = event.jdevice.which;
122                    SDL_Log("Joy Added  : %" SDL_PRIu32 " : %s", event.jdevice.which, SDL_GetJoystickName(joystick));
123                    if (enable_haptic) {
124                        if (SDL_IsJoystickHaptic(joystick)) {
125                            haptic = SDL_OpenHapticFromJoystick(joystick);
126                            if (haptic) {
127                                SDL_Log("Joy Haptic Opened");
128                                if (!SDL_InitHapticRumble(haptic)) {
129                                    SDL_Log("Could not init Rumble!: %s", SDL_GetError());
130                                    SDL_CloseHaptic(haptic);
131                                    haptic = NULL;
132                                }
133                            } else {
134                                SDL_Log("Joy haptic open FAILED!: %s", SDL_GetError());
135                            }
136                        } else {
137                            SDL_Log("No haptic found");
138                        }
139                    }
140                }
141                break;
142            case SDL_EVENT_JOYSTICK_REMOVED:
143                if (instance == event.jdevice.which) {
144                    SDL_Log("Joy Removed: %" SDL_PRIs32, event.jdevice.which);
145                    instance = 0;
146                    if (enable_haptic && haptic) {
147                        SDL_CloseHaptic(haptic);
148                        haptic = NULL;
149                    }
150                    SDL_CloseJoystick(joystick);
151                    joystick = NULL;
152                } else {
153                    SDL_Log("Unknown joystick disconnected");
154                }
155                break;
156            case SDL_EVENT_JOYSTICK_AXIS_MOTION:
157                /*
158                //                    SDL_Log("Axis Move: %d", event.jaxis.axis);
159                */
160                if (enable_haptic) {
161                    SDL_PlayHapticRumble(haptic, 0.25, 250);
162                }
163                break;
164            case SDL_EVENT_JOYSTICK_BUTTON_DOWN:
165                SDL_Log("Button Press: %d", event.jbutton.button);
166                if (enable_haptic && haptic) {
167                    SDL_PlayHapticRumble(haptic, 0.25, 250);
168                }
169                if (event.jbutton.button == 0) {
170                    SDL_Log("Exiting due to button press of button 0");
171                    keepGoing = false;
172                }
173                break;
174            case SDL_EVENT_JOYSTICK_BUTTON_UP:
175                SDL_Log("Button Release: %d", event.jbutton.button);
176                break;
177            default:
178                break;
179            }
180        }
181    }
182
183    SDL_Quit();
184    SDLTest_CommonDestroyState(state);
185
186    return 0;
187}
188
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