testhotplug.c
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/*
Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely.
*/
/* Simple program to test the SDL joystick hotplugging */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "SDL.h"
#if !defined SDL_JOYSTICK_DISABLED && !defined SDL_HAPTIC_DISABLED
int
main(int argc, char *argv[])
{
SDL_Joystick *joystick = NULL;
SDL_Haptic *haptic = NULL;
SDL_JoystickID instance = -1;
SDL_bool keepGoing = SDL_TRUE;
int i;
SDL_bool enable_haptic = SDL_TRUE;
Uint32 init_subsystems = SDL_INIT_VIDEO | SDL_INIT_JOYSTICK;
for (i = 1; i < argc; ++i) {
if (SDL_strcasecmp(argv[i], "--nohaptic") == 0) {
enable_haptic = SDL_FALSE;
}
}
if(enable_haptic) {
init_subsystems |= SDL_INIT_HAPTIC;
}
/* Enable standard application logging */
SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
SDL_SetHint(SDL_HINT_JOYSTICK_ALLOW_BACKGROUND_EVENTS, "1");
/* Initialize SDL (Note: video is required to start event loop) */
if (SDL_Init(init_subsystems) < 0) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't initialize SDL: %s\n", SDL_GetError());
exit(1);
}
/*
//SDL_CreateWindow("Dummy", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 128, 128, 0);
*/
SDL_Log("There are %d joysticks at startup\n", SDL_NumJoysticks());
if (enable_haptic)
SDL_Log("There are %d haptic devices at startup\n", SDL_NumHaptics());
while(keepGoing)
{
SDL_Event event;
while(SDL_PollEvent(&event))
{
switch(event.type)
{
case SDL_QUIT:
keepGoing = SDL_FALSE;
break;
case SDL_JOYDEVICEADDED:
if (joystick != NULL)
{
SDL_Log("Only one joystick supported by this test\n");
}
else
{
joystick = SDL_JoystickOpen(event.jdevice.which);
instance = SDL_JoystickInstanceID(joystick);
SDL_Log("Joy Added : %d : %s\n", event.jdevice.which, SDL_JoystickName(joystick));
if (enable_haptic)
{
if (SDL_JoystickIsHaptic(joystick))
{
haptic = SDL_HapticOpenFromJoystick(joystick);
if (haptic)
{
SDL_Log("Joy Haptic Opened\n");
if (SDL_HapticRumbleInit( haptic ) != 0)
{
SDL_Log("Could not init Rumble!: %s\n", SDL_GetError());
SDL_HapticClose(haptic);
haptic = NULL;
}
} else {
SDL_Log("Joy haptic open FAILED!: %s\n", SDL_GetError());
}
}
else
{
SDL_Log("No haptic found\n");
}
}
}
break;
case SDL_JOYDEVICEREMOVED:
if (instance == event.jdevice.which)
{
SDL_Log("Joy Removed: %d\n", event.jdevice.which);
instance = -1;
if(enable_haptic && haptic)
{
SDL_HapticClose(haptic);
haptic = NULL;
}
SDL_JoystickClose(joystick);
joystick = NULL;
} else {
SDL_Log("Unknown joystick diconnected\n");
}
break;
case SDL_JOYAXISMOTION:
/*
// SDL_Log("Axis Move: %d\n", event.jaxis.axis);
*/
if (enable_haptic)
SDL_HapticRumblePlay(haptic, 0.25, 250);
break;
case SDL_JOYBUTTONDOWN:
SDL_Log("Button Press: %d\n", event.jbutton.button);
if(enable_haptic && haptic)
{
SDL_HapticRumblePlay(haptic, 0.25, 250);
}
if (event.jbutton.button == 0) {
SDL_Log("Exiting due to button press of button 0\n");
keepGoing = SDL_FALSE;
}
break;
case SDL_JOYBUTTONUP:
SDL_Log("Button Release: %d\n", event.jbutton.button);
break;
}
}
}
SDL_Quit();
return 0;
}
#else
int
main(int argc, char *argv[])
{
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "SDL compiled without Joystick and haptic support.\n");
return 1;
}
#endif
SDL_JOYBUTTONUP
Definition: SDL_events.h:112
SDL_HINT_JOYSTICK_ALLOW_BACKGROUND_EVENTS
#define SDL_HINT_JOYSTICK_ALLOW_BACKGROUND_EVENTS
A variable that lets you enable joystick (and gamecontroller) events even when your app is in the bac...
Definition: SDL_hints.h:334
SDL_PollEvent
#define SDL_PollEvent
Definition: SDL_dynapi_overrides.h:128
SDL_GetError
#define SDL_GetError
Definition: SDL_dynapi_overrides.h:119
SDL_Event::jdevice
SDL_JoyDeviceEvent jdevice
Definition: SDL_events.h:536
SDL_HapticOpenFromJoystick
#define SDL_HapticOpenFromJoystick
Definition: SDL_dynapi_overrides.h:173
SDL_JoystickClose
#define SDL_JoystickClose
Definition: SDL_dynapi_overrides.h:221
Uint32
uint32_t Uint32
An unsigned 32-bit integer type.
Definition: SDL_stdinc.h:155
SDL_INIT_JOYSTICK
#define SDL_INIT_JOYSTICK
Definition: SDL.h:78
SDL_Event::jbutton
SDL_JoyButtonEvent jbutton
Definition: SDL_events.h:535
SDL_JOYDEVICEADDED
Definition: SDL_events.h:113
SDL_QUIT
Definition: SDL_events.h:60
SDL_JoystickOpen
#define SDL_JoystickOpen
Definition: SDL_dynapi_overrides.h:203
SDL_NumJoysticks
#define SDL_NumJoysticks
Definition: SDL_dynapi_overrides.h:201
SDL_strcasecmp
#define SDL_strcasecmp
Definition: SDL_dynapi_overrides.h:425
SDL_JOYAXISMOTION
Definition: SDL_events.h:108
SDL_HapticClose
#define SDL_HapticClose
Definition: SDL_dynapi_overrides.h:174
SDL_JoystickInstanceID
#define SDL_JoystickInstanceID
Definition: SDL_dynapi_overrides.h:210
SDL_JoystickName
#define SDL_JoystickName
Definition: SDL_dynapi_overrides.h:204
SDL_LogError
#define SDL_LogError
Definition: SDL_dynapi_overrides.h:42
SDL_JOYDEVICEREMOVED
Definition: SDL_events.h:114
SDL_bool
SDL_bool
Definition: SDL_stdinc.h:126
SDL_Log
#define SDL_Log
Definition: SDL_dynapi_overrides.h:37
SDL_JoystickIsHaptic
#define SDL_JoystickIsHaptic
Definition: SDL_dynapi_overrides.h:172
SDL_JoystickID
Sint32 SDL_JoystickID
Definition: SDL_joystick.h:72
SDL_JOYBUTTONDOWN
Definition: SDL_events.h:111
event
struct _cl_event * event
Definition: SDL_opengl_glext.h:2649
SDL_Quit
#define SDL_Quit
Definition: SDL_dynapi_overrides.h:64
SDL_LOG_PRIORITY_INFO
Definition: SDL_log.h:106
SDL_TRUE
Definition: SDL_stdinc.h:129
i
return Display return Display Bool Bool int int int return Display XEvent Bool(*) XPointer return Display return Display Drawable _Xconst char unsigned int unsigned int return Display Pixmap Pixmap XColor XColor unsigned int unsigned int return Display _Xconst char char int char return Display Visual unsigned int int int char unsigned int unsigned int in i)
Definition: SDL_x11sym.h:42
SDL_LogSetPriority
#define SDL_LogSetPriority
Definition: SDL_dynapi_overrides.h:242
NULL
#define NULL
Definition: begin_code.h:143
haptic
static SDL_Haptic * haptic
Definition: testhaptic.c:25
SDL_JoyDeviceEvent::which
Sint32 which
Definition: SDL_events.h:346
SDL_SetHint
#define SDL_SetHint
Definition: SDL_dynapi_overrides.h:196
SDL_FALSE
Definition: SDL_stdinc.h:128
SDL_NumHaptics
#define SDL_NumHaptics
Definition: SDL_dynapi_overrides.h:165
SDL_HapticRumbleInit
#define SDL_HapticRumbleInit
Definition: SDL_dynapi_overrides.h:192
SDL_Init
#define SDL_Init
Definition: SDL_dynapi_overrides.h:60
SDL_Event
General event structure.
Definition: SDL_events.h:521
SDL_JoyButtonEvent::button
Uint8 button
Definition: SDL_events.h:333
SDL_INIT_HAPTIC
#define SDL_INIT_HAPTIC
Definition: SDL.h:79
main
int main(int argc, char *argv[])
Definition: testhotplug.c:24
SDL.h
SDL_LOG_CATEGORY_APPLICATION
Definition: SDL_log.h:66
SDL_INIT_VIDEO
#define SDL_INIT_VIDEO
Definition: SDL.h:77
SDL_HapticRumblePlay
#define SDL_HapticRumblePlay
Definition: SDL_dynapi_overrides.h:193
SDL_Event::type
Uint32 type
Definition: SDL_events.h:523