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diff --git a/src/usbjoy.c b/src/usbjoy.c
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-/* Title: USB Joystick library
- Version 0.2
- Written by Puck2099 (puck2099@gmail.com), (c) 2006.
- <http://www.gp32wip.com>
-
- If you use this library or a part of it, please, let it know.
-
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- This library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with this library; if not, write to the Free Software
- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
-*/
-
-#include <stdlib.h>
-#include <stdio.h> /* For the definition of NULL */
-#include <sys/types.h> // For Device open
-#include <sys/stat.h>
-#include <sys/ioctl.h>
-#include <fcntl.h>
-#include <unistd.h> // For Device read
-
-#include <string.h>
-#include <limits.h> /* For the definition of PATH_MAX */
-#include <linux/joystick.h>
-
-#include "usbjoy.h"
-
-
-/*
- Function: joy_open
-
- Opens a USB joystick and fills its information.
-
- Parameters:
-
- joynumber - Joystick's identifier (0 reserved for GP2X's builtin Joystick).
-
- Returns:
-
- Filled usbjoy structure.
-
-*/
-struct usbjoy * joy_open (int joynumber) {
- int fd, i;
- char path [128];
- struct usbjoy * joy = NULL;
-
- system ("insmod joydev"); // Loads joydev module
-
- if (joynumber == 0) {
- }
- else if (joynumber > 0) {
- sprintf (path, "/dev/input/js%d", joynumber-1);
- fd = open(path, O_RDONLY, 0);
- if (fd > 0) {
- joy = (struct usbjoy *) malloc(sizeof(struct usbjoy));
-
- // Joystick's file descriptor
- joy->fd = fd;
-
- // Set the joystick to non-blocking read mode
- fcntl(joy->fd, F_SETFL, O_NONBLOCK);
-
- // Joystick's name
- ioctl(joy->fd, JSIOCGNAME(128*sizeof(char)), joy->name);
-
- // Joystick's device
- sprintf (joy->device, path);
-
- // Joystick's buttons
- ioctl(joy->fd, JSIOCGBUTTONS, &joy->numbuttons);
-
- // Joystick's axes
- ioctl(joy->fd, JSIOCGAXES, &joy->numaxes);
-
- // Clean buttons and axes
- for (i=0; i<32; i++) joy->statebuttons[i] = 0;
- for (i=0; i<4; i++) joy->stateaxes[i] = 0;
- }
- else {
- printf ("ERROR: No Joystick found\n");
- }
- }
- return joy;
-}
-
-/*
- Function: joy_name
-
- Returns Joystick's name.
-
- Parameters:
-
- joy - Selected joystick.
-
- Returns:
-
- Joystick's name or NULL if <usbjoy> struct is empty.
-*/
-char * joy_name (struct usbjoy * joy) {
- if (joy != NULL) return joy->name;
- else return NULL;
-}
-
-
-/*
- Function: joy_device
-
- Returns Joystick's device.
-
- Parameters:
-
- joy - Selected joystick.
-
- Returns:
-
- Joystick's device or NULL if <usbjoy> struct is empty.
-*/
-char * joy_device (struct usbjoy * joy) {
- if (joy != NULL) return joy->device;
- else return NULL;
-}
-
-
-/*
- Function: joy_buttons
-
- Returns Joystick's buttons number.
-
- Parameters:
-
- joy - Selected joystick.
-
- Returns:
-
- Joystick's buttons or 0 if <usbjoy> struct is empty.
-*/
-int joy_buttons (struct usbjoy * joy) {
- if (joy != NULL) return joy->numbuttons;
- else return 0;
-}
-
-
-/*
- Function: joy_axes
-
- Returns Joystick's axes number.
-
- Parameters:
-
- joy - Selected joystick.
-
- Returns:
-
- Joystick's axes or 0 if <usbjoy> struct is empty.
-*/
-int joy_axes (struct usbjoy * joy) {
- if (joy != NULL) return joy->numaxes;
- else return 0;
-}
-
-
-/*
- Function: joy_update
-
- Updates Joystick's internal information (<statebuttons> and <stateaxes> fields).
-
- Parameters:
-
- joy - Selected joystick.
-
- Returns:
-
- 0 - No events registered (no need to update).
- 1 - Events registered (a button or axe has been pushed).
- -1 - Error: <usbjoy> struct is empty.
-*/
-int joy_update (struct usbjoy * joy) {
- struct js_event events[0xff];
- int i, len;
- int event = 0;
- if (joy != NULL) {
- if ((len=read(joy->fd, events, (sizeof events))) >0) {
- len /= sizeof(events[0]);
- for ( i=0; i<len; ++i ) {
- switch (events[i].type & ~JS_EVENT_INIT) {
- case JS_EVENT_AXIS:
- if (events[i].number == 0) {
- joy->stateaxes[JOYLEFT] = joy->stateaxes[JOYRIGHT] = 0;
- if (events[i].value < 0) joy->stateaxes[JOYLEFT] = 1;
- else if (events[i].value > 0) joy->stateaxes[JOYRIGHT] = 1;
- }
- else if (events[i].number == 1) {
- joy->stateaxes[JOYUP] = joy->stateaxes[JOYDOWN] = 0;
- if (events[i].value < 0) joy->stateaxes[JOYUP] = 1;
- else if (events[i].value > 0) joy->stateaxes[JOYDOWN] = 1;
- }
- event = 1;
- break;
- case JS_EVENT_BUTTON:
- joy->statebuttons[events[i].number] = events[i].value;
- event = 1;
- break;
- default:
- break;
- }
- }
- }
- }
- else {
- event = -1;
- }
- return event;
-}
-
-
-/*
- Function: joy_getbutton
-
- Returns Joystick's button information.
-
- Parameters:
-
- button - Button which value you want to know (from 0 to 31).
- joy - Selected joystick.
-
- Returns:
-
- 0 - Button NOT pushed.
- 1 - Button pushed.
- -1 - Error: <usbjoy> struct is empty.
-*/
-int joy_getbutton (int button, struct usbjoy * joy) {
- if (joy != NULL) {
- if (button < joy_buttons(joy)) return joy->statebuttons[button];
- else return 0;
- }
- else return -1;
-}
-
-
-/*
- Function: joy_getaxe
-
- Returns Joystick's axes information.
-
- Parameters:
-
- axe - Axe which value you want to know (see <Axes values>).
- joy - Selected joystick.
-
- Returns:
-
- 0 - Direction NOT pushed.
- 1 - Direction pushed.
- -1 - Error: <usbjoy> struct is empty.
-*/
-int joy_getaxe (int axe, struct usbjoy * joy) {
- if (joy != NULL) {
- if (axe < 4) return joy->stateaxes[axe];
- else return 0;
- }
- else return -1;
-}
-
-
-/*
- Function: joy_close
-
- Closes selected joystick's file descriptor and detroys it's fields.
-
- Parameters:
-
- joy - Selected joystick.
-
- Returns:
-
- 0 - Joystick successfully closed.
- -1 - Error: <usbjoy> struct is empty.
-*/
-int joy_close (struct usbjoy * joy) {
- if (joy != NULL) {
- close (joy->fd);
- free (joy);
- return 0;
- }
- else return -1;
-}
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