Esempio n. 1
0
int
SDL_SYS_JoystickInit(void)
{
	char s[16];
	int i, fd;

	SDL_numjoysticks = 0;

	SDL_memset(joynames, 0, sizeof(joynames));
	SDL_memset(joydevnames, 0, sizeof(joydevnames));

	for (i = 0; i < MAX_UHID_JOYS; i++) {
		SDL_Joystick nj;

		SDL_snprintf(s, SDL_arraysize(s), "/dev/uhid%d", i);

		nj.index = SDL_numjoysticks;
		joynames[nj.index] = strdup(s);

		if (SDL_SYS_JoystickOpen(&nj) == 0) {
			SDL_SYS_JoystickClose(&nj);
			SDL_numjoysticks++;
		} else {
			SDL_free(joynames[nj.index]);
			joynames[nj.index] = NULL;
		}
	}
	for (i = 0; i < MAX_JOY_JOYS; i++) {
		SDL_snprintf(s, SDL_arraysize(s), "/dev/joy%d", i);
		fd = open(s, O_RDONLY);
		if (fd != -1) {
			joynames[SDL_numjoysticks++] = strdup(s);
			close(fd);
		}
	}

	/* Read the default USB HID usage table. */
	hid_init(NULL);

	return (SDL_numjoysticks);
}
Esempio n. 2
0
/*
 * Open a joystick for use - the index passed as an argument refers to
 * the N'th joystick on the system.  This index is the value which will
 * identify this joystick in future joystick events.
 *
 * This function returns a joystick identifier, or NULL if an error occurred.
 */
SDL_Joystick *SDL_JoystickOpen(int device_index)
{
	int i;
	SDL_Joystick *joystick;

	if ( (device_index < 0) || (device_index >= SDL_numjoysticks) ) {
		SDL_SetError("There are %d joysticks available",
		             SDL_numjoysticks);
		return(NULL);
	}

	/* If the joystick is already open, return it */
	for ( i=0; SDL_joysticks[i]; ++i ) {
		if ( device_index == SDL_joysticks[i]->index ) {
			joystick = SDL_joysticks[i];
			++joystick->ref_count;
			return(joystick);
		}
	}

	/* Create and initialize the joystick */
	joystick = (SDL_Joystick *)malloc((sizeof *joystick));
	if ( joystick != NULL ) {
		memset(joystick, 0, (sizeof *joystick));
		joystick->index = device_index;
		if ( SDL_SYS_JoystickOpen(joystick) < 0 ) {
			free(joystick);
			joystick = NULL;
		} else {
			if ( joystick->naxes > 0 ) {
				joystick->axes = (Sint16 *)malloc
					(joystick->naxes*sizeof(Sint16));
			}
			if ( joystick->nhats > 0 ) {
				joystick->hats = (Uint8 *)malloc
					(joystick->nhats*sizeof(Uint8));
			}
			if ( joystick->nballs > 0 ) {
				joystick->balls = (struct balldelta *)malloc
				  (joystick->nballs*sizeof(*joystick->balls));
			}
			if ( joystick->nbuttons > 0 ) {
				joystick->buttons = (Uint8 *)malloc
					(joystick->nbuttons*sizeof(Uint8));
			}
			if ( ((joystick->naxes > 0) && !joystick->axes)
			  || ((joystick->nhats > 0) && !joystick->hats)
			  || ((joystick->nballs > 0) && !joystick->balls)
			  || ((joystick->nbuttons > 0) && !joystick->buttons)) {
				SDL_OutOfMemory();
				SDL_JoystickClose(joystick);
				joystick = NULL;
			}
			if ( joystick->axes ) {
				memset(joystick->axes, 0,
					joystick->naxes*sizeof(Sint16));
			}
			if ( joystick->hats ) {
				memset(joystick->hats, 0,
					joystick->nhats*sizeof(Uint8));
			}
			if ( joystick->balls ) {
				memset(joystick->balls, 0,
				  joystick->nballs*sizeof(*joystick->balls));
			}
			if ( joystick->buttons ) {
				memset(joystick->buttons, 0,
					joystick->nbuttons*sizeof(Uint8));
			}
		}
	}
	if ( joystick ) {
		/* Add joystick to list */
		++joystick->ref_count;
		SDL_Lock_EventThread();
		for ( i=0; SDL_joysticks[i]; ++i )
			/* Skip to next joystick */;
		SDL_joysticks[i] = joystick;
		SDL_Unlock_EventThread();
	}
	return(joystick);
}
Esempio n. 3
0
/*
 * Open a joystick for use - the index passed as an argument refers to
 * the N'th joystick on the system.  This index is the value which will
 * identify this joystick in future joystick events.
 *
 * This function returns a joystick identifier, or NULL if an error occurred.
 */
SDL_Joystick *
SDL_JoystickOpen(int device_index)
{
    SDL_Joystick *joystick;
    SDL_Joystick *joysticklist;
    const char *joystickname = NULL;

    if ((device_index < 0) || (device_index >= SDL_NumJoysticks())) {
        SDL_SetError("There are %d joysticks available", SDL_NumJoysticks());
        return (NULL);
    }

    joysticklist = SDL_joysticks;
    /* If the joystick is already open, return it
    * it is important that we have a single joystick * for each instance id
    */
    while (joysticklist) {
        if (SDL_SYS_GetInstanceIdOfDeviceIndex(device_index) == joysticklist->instance_id) {
            joystick = joysticklist;
            ++joystick->ref_count;
            return (joystick);
        }
        joysticklist = joysticklist->next;
    }

    /* Create and initialize the joystick */
    joystick = (SDL_Joystick *) SDL_malloc((sizeof *joystick));
    if (joystick == NULL) {
        SDL_OutOfMemory();
        return NULL;
    }

    SDL_memset(joystick, 0, (sizeof *joystick));
    if (SDL_SYS_JoystickOpen(joystick, device_index) < 0) {
        SDL_free(joystick);
        return NULL;
    }

    joystickname = SDL_SYS_JoystickNameForDeviceIndex(device_index);
    if (joystickname)
        joystick->name = SDL_strdup(joystickname);
    else
        joystick->name = NULL;

    if (joystick->naxes > 0) {
        joystick->axes = (Sint16 *) SDL_malloc(joystick->naxes * sizeof(Sint16));
        joystick->axes_zero = (Sint16 *) SDL_malloc(joystick->naxes * sizeof(Sint16));
    }
    if (joystick->nhats > 0) {
        joystick->hats = (Uint8 *) SDL_malloc
                         (joystick->nhats * sizeof(Uint8));
    }
    if (joystick->nballs > 0) {
        joystick->balls = (struct balldelta *) SDL_malloc
                          (joystick->nballs * sizeof(*joystick->balls));
    }
    if (joystick->nbuttons > 0) {
        joystick->buttons = (Uint8 *) SDL_malloc
                            (joystick->nbuttons * sizeof(Uint8));
    }
    if (((joystick->naxes > 0) && !joystick->axes)
            || ((joystick->nhats > 0) && !joystick->hats)
            || ((joystick->nballs > 0) && !joystick->balls)
            || ((joystick->nbuttons > 0) && !joystick->buttons)) {
        SDL_OutOfMemory();
        SDL_JoystickClose(joystick);
        return NULL;
    }
    if (joystick->axes) {
        SDL_memset(joystick->axes, 0, joystick->naxes * sizeof(Sint16));
        SDL_memset(joystick->axes_zero, 0, joystick->naxes * sizeof(Sint16));
    }
    if (joystick->hats) {
        SDL_memset(joystick->hats, 0, joystick->nhats * sizeof(Uint8));
    }
    if (joystick->balls) {
        SDL_memset(joystick->balls, 0,
                   joystick->nballs * sizeof(*joystick->balls));
    }
    if (joystick->buttons) {
        SDL_memset(joystick->buttons, 0, joystick->nbuttons * sizeof(Uint8));
    }
    joystick->epowerlevel = SDL_JOYSTICK_POWER_UNKNOWN;

    /* Add joystick to list */
    ++joystick->ref_count;
    /* Link the joystick in the list */
    joystick->next = SDL_joysticks;
    SDL_joysticks = joystick;

    SDL_SYS_JoystickUpdate(joystick);

    return (joystick);
}
Esempio n. 4
0
/*
 * Open a joystick for use - the index passed as an argument refers to
 * the N'th joystick on the system.  This index is the value which will
 * identify this joystick in future joystick events.
 *
 * This function returns a joystick identifier, or NULL if an error occurred.
 */
SDL_Joystick *
SDL_JoystickOpen(int device_index)
{
    SDL_Joystick *joystick;
    SDL_Joystick *joysticklist;
    const char *joystickname = NULL;

    if ((device_index < 0) || (device_index >= SDL_NumJoysticks())) {
        SDL_SetError("There are %d joysticks available", SDL_NumJoysticks());
        return (NULL);
    }

    SDL_LockJoystickList();

    joysticklist = SDL_joysticks;
    /* If the joystick is already open, return it
     * it is important that we have a single joystick * for each instance id
     */
    while (joysticklist) {
        if (SDL_JoystickGetDeviceInstanceID(device_index) == joysticklist->instance_id) {
                joystick = joysticklist;
                ++joystick->ref_count;
                SDL_UnlockJoystickList();
                return (joystick);
        }
        joysticklist = joysticklist->next;
    }

    /* Create and initialize the joystick */
    joystick = (SDL_Joystick *) SDL_calloc(sizeof(*joystick), 1);
    if (joystick == NULL) {
        SDL_OutOfMemory();
        SDL_UnlockJoystickList();
        return NULL;
    }

    if (SDL_SYS_JoystickOpen(joystick, device_index) < 0) {
        SDL_free(joystick);
        SDL_UnlockJoystickList();
        return NULL;
    }

    joystickname = SDL_SYS_JoystickNameForDeviceIndex(device_index);
    if (joystickname)
        joystick->name = SDL_strdup(joystickname);
    else
        joystick->name = NULL;

    if (joystick->naxes > 0) {
        joystick->axes = (SDL_JoystickAxisInfo *) SDL_calloc(joystick->naxes, sizeof(SDL_JoystickAxisInfo));
    }
    if (joystick->nhats > 0) {
        joystick->hats = (Uint8 *) SDL_calloc(joystick->nhats, sizeof(Uint8));
    }
    if (joystick->nballs > 0) {
        joystick->balls = (struct balldelta *) SDL_calloc(joystick->nballs, sizeof(*joystick->balls));
    }
    if (joystick->nbuttons > 0) {
        joystick->buttons = (Uint8 *) SDL_calloc(joystick->nbuttons, sizeof(Uint8));
    }
    if (((joystick->naxes > 0) && !joystick->axes)
        || ((joystick->nhats > 0) && !joystick->hats)
        || ((joystick->nballs > 0) && !joystick->balls)
        || ((joystick->nbuttons > 0) && !joystick->buttons)) {
        SDL_OutOfMemory();
        SDL_JoystickClose(joystick);
        SDL_UnlockJoystickList();
        return NULL;
    }
    joystick->epowerlevel = SDL_JOYSTICK_POWER_UNKNOWN;

    /* If this joystick is known to have all zero centered axes, skip the auto-centering code */
    if (SDL_JoystickAxesCenteredAtZero(joystick)) {
        int i;

        for (i = 0; i < joystick->naxes; ++i) {
            joystick->axes[i].has_initial_value = SDL_TRUE;
        }
    }

    joystick->is_game_controller = SDL_IsGameController(device_index);

    /* Add joystick to list */
    ++joystick->ref_count;
    /* Link the joystick in the list */
    joystick->next = SDL_joysticks;
    SDL_joysticks = joystick;

    SDL_UnlockJoystickList();

    SDL_SYS_JoystickUpdate(joystick);

    return (joystick);
}
Esempio n. 5
0
SDL_Joystick *SDL_JoystickOpen(int device_index)
{
	int i;
	SDL_Joystick *joystick;

	if ( (device_index < 0) || (device_index >= SDL_numjoysticks) ) {
		SDL_SetError("There are %d joysticks available",
		             SDL_numjoysticks);
		return(NULL);
	}

	
	for ( i=0; SDL_joysticks[i]; ++i ) {
		if ( device_index == SDL_joysticks[i]->index ) {
			joystick = SDL_joysticks[i];
			++joystick->ref_count;
			return(joystick);
		}
	}

	
	joystick = (SDL_Joystick *)SDL_malloc((sizeof *joystick));
	if ( !joystick ) {
		SDL_OutOfMemory();
		return(NULL);
	}

	SDL_memset(joystick, 0, (sizeof *joystick));
	joystick->index = device_index;
	if ( SDL_SYS_JoystickOpen(joystick) < 0 ) {
		SDL_free(joystick);
		return(NULL);
	}

	if ( joystick->naxes > 0 ) {
		joystick->axes = (Sint16 *)SDL_malloc
			(joystick->naxes*sizeof(Sint16));
	}
	if ( joystick->nhats > 0 ) {
		joystick->hats = (Uint8 *)SDL_malloc
			(joystick->nhats*sizeof(Uint8));
	}
	if ( joystick->nballs > 0 ) {
		joystick->balls = (struct balldelta *)SDL_malloc
			(joystick->nballs*sizeof(*joystick->balls));
	}
	if ( joystick->nbuttons > 0 ) {
		joystick->buttons = (Uint8 *)SDL_malloc
			(joystick->nbuttons*sizeof(Uint8));
	}
	if ( ((joystick->naxes > 0) && !joystick->axes)
	  || ((joystick->nhats > 0) && !joystick->hats)
	  || ((joystick->nballs > 0) && !joystick->balls)
	  || ((joystick->nbuttons > 0) && !joystick->buttons)) {
		SDL_OutOfMemory();
		SDL_JoystickClose(joystick);
		return(NULL);
	}

	if ( joystick->axes ) {
		SDL_memset(joystick->axes, 0,
			joystick->naxes*sizeof(Sint16));
	}
	if ( joystick->hats ) {
		SDL_memset(joystick->hats, 0,
			joystick->nhats*sizeof(Uint8));
	}
	if ( joystick->balls ) {
		SDL_memset(joystick->balls, 0,
			joystick->nballs*sizeof(*joystick->balls));
	}
	if ( joystick->buttons ) {
		SDL_memset(joystick->buttons, 0,
			joystick->nbuttons*sizeof(Uint8));
	}

	
	++joystick->ref_count;
	SDL_Lock_EventThread();
	for ( i=0; SDL_joysticks[i]; ++i )
		 ;
	SDL_joysticks[i] = joystick;
	SDL_Unlock_EventThread();

	return(joystick);
}