test/testhotplug.c

   1 /*
   2   Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org>
   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 <stdio.h>
  16 #include <stdlib.h>
  17 #include <string.h>
  18
  19 #include "SDL.h"
  20
  21 #if !defined SDL_JOYSTICK_DISABLED && !defined SDL_HAPTIC_DISABLED
  22
  23 int
  24 main(int argc, char *argv[])
  25 {
  26     SDL_Joystick *joystick = NULL;
  27     SDL_Haptic *haptic = NULL;
  28     SDL_JoystickID instance = -1;
  29     SDL_bool keepGoing = SDL_TRUE;
  30     int i;
  31     SDL_bool enable_haptic = SDL_TRUE;
  32     Uint32 init_subsystems = SDL_INIT_VIDEO | SDL_INIT_JOYSTICK;
  33
  34     for (i = 1; i < argc; ++i) {
  35         if (SDL_strcasecmp(argv[i], "--nohaptic") == 0) {
  36             enable_haptic = SDL_FALSE;
  37         }
  38     }
  39
  40     if(enable_haptic) {
  41         init_subsystems |= SDL_INIT_HAPTIC;
  42     }
  43
  44     /* Enable standard application logging */
  45     SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
  46
  47     SDL_SetHint(SDL_HINT_JOYSTICK_ALLOW_BACKGROUND_EVENTS, "1");
  48
  49     /* Initialize SDL (Note: video is required to start event loop) */
  50     if (SDL_Init(init_subsystems) < 0) {
  51         SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't initialize SDL: %s\n", SDL_GetError());
  52         exit(1);
  53     }
  54
  55     /*
  56     //SDL_CreateWindow("Dummy", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 128, 128, 0);
  57     */
  58
  59     SDL_Log("There are %d joysticks at startup\n", SDL_NumJoysticks());
  60     if (enable_haptic)
  61         SDL_Log("There are %d haptic devices at startup\n", SDL_NumHaptics());
  62
  63     while(keepGoing)
  64     {
  65         SDL_Event event;
  66         while(SDL_PollEvent(&event))
  67         {
  68             switch(event.type)
  69             {
  70                 case SDL_QUIT:
  71                     keepGoing = SDL_FALSE;
  72                     break;
  73                 case SDL_JOYDEVICEADDED:
  74                     if (joystick != NULL)
  75                     {
  76                         SDL_Log("Only one joystick supported by this test\n");
  77                     }
  78                     else
  79                     {
  80                         joystick = SDL_JoystickOpen(event.jdevice.which);
  81                         instance = SDL_JoystickInstanceID(joystick);
  82                         SDL_Log("Joy Added  : %d : %s\n", event.jdevice.which, SDL_JoystickName(joystick));
  83                         if (enable_haptic)
  84                         {
  85                             if (SDL_JoystickIsHaptic(joystick))
  86                             {
  87                                 haptic = SDL_HapticOpenFromJoystick(joystick);
  88                                 if (haptic)
  89                                 {
  90                                     SDL_Log("Joy Haptic Opened\n");
  91                                     if (SDL_HapticRumbleInit( haptic ) != 0)
  92                                     {
  93                                         SDL_Log("Could not init Rumble!: %s\n", SDL_GetError());
  94                                         SDL_HapticClose(haptic);
  95                                         haptic = NULL;
  96                                     }
  97                                 } else {
  98                                     SDL_Log("Joy haptic open FAILED!: %s\n", SDL_GetError());
  99                                 }
 100                             }
 101                             else
 102                             {
 103                                 SDL_Log("No haptic found\n");
 104                             }
 105                         }
 106                     }
 107                     break;
 108                 case SDL_JOYDEVICEREMOVED:
 109                     if (instance == event.jdevice.which)
 110                     {
 111                         SDL_Log("Joy Removed: %d\n", event.jdevice.which);
 112                         instance = -1;
 113                         if(enable_haptic && haptic)
 114                         {
 115                             SDL_HapticClose(haptic);
 116                             haptic = NULL;
 117                         }
 118                         SDL_JoystickClose(joystick);
 119                         joystick = NULL;
 120                     } else {
 121                         SDL_Log("Unknown joystick diconnected\n");
 122                     }
 123                     break;
 124                 case SDL_JOYAXISMOTION:
 125 /*
 126 //                    SDL_Log("Axis Move: %d\n", event.jaxis.axis);
 127 */
 128                     if (enable_haptic)
 129                         SDL_HapticRumblePlay(haptic, 0.25, 250);
 130                     break;
 131                 case SDL_JOYBUTTONDOWN:
 132                     SDL_Log("Button Press: %d\n", event.jbutton.button);
 133                     if(enable_haptic && haptic)
 134                     {
 135                         SDL_HapticRumblePlay(haptic, 0.25, 250);
 136                     }
 137                     if (event.jbutton.button == 0) {
 138                         SDL_Log("Exiting due to button press of button 0\n");
 139                         keepGoing = SDL_FALSE;
 140                     }
 141                     break;
 142                 case SDL_JOYBUTTONUP:
 143                     SDL_Log("Button Release: %d\n", event.jbutton.button);
 144                     break;
 145             }
 146         }
 147     }
 148
 149     SDL_Quit();
 150
 151     return 0;
 152 }
 153 #else
 154
 155 int
 156 main(int argc, char *argv[])
 157 {
 158     SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "SDL compiled without Joystick and haptic support.\n");
 159     return 1;
 160 }
 161
 162 #endif