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241 lines
4.5 KiB
C
241 lines
4.5 KiB
C
/* Title: USB Joystick library
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Version 0.2
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Written by Puck2099 (puck2099@gmail.com), (c) 2006.
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<http://www.gp32wip.com>
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If you use this library or a part of it, please, let it know.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef USBJOY_H
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#define USBJOY_H
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/* notaz: my Logitech has different button layout, and I want it to match gptx's */
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typedef enum {
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JOY_TYPE_GENERIC,
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JOY_TYPE_LOGITECH
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} joy_type;
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/*
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Enumeration: Axes values
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This enumeration contains shortcuts to the values used on axes.
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Constants:
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JOYUP - Joystick Up
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JOYDOWN - Joystick Down
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JOYLEFT - Joystick Left
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JOYRIGHT - Joystick Right
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See also:
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<joy_getaxe>
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*/
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#define JOYUP (0)
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#define JOYDOWN (1)
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#define JOYLEFT (2)
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#define JOYRIGHT (3)
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/*
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Struct: usbjoy
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Contains all Joystick needed information.
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Fields:
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fd - File descriptor used.
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name - Joystick's name.
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device - /dev/input/jsX device.
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numbuttons - Joystick's buttons.
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numaxes - Joystick's axes.
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numhats - Joystick's hats.
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statebuttons - Current state of each button.
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stateaxes - Current state of each direction.
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*/
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struct usbjoy {
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int fd;
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char name [128];
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char device [128];
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int numbuttons;
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int numaxes;
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int numhats;
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int statebuttons[32];
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int stateaxes[4];
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joy_type type;
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};
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/*
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Function: joy_open
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Opens a USB joystick and fills its information.
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Parameters:
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joynumber - Joystick's identifier (0 reserved for GP2X's builtin Joystick).
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Returns:
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Filled usbjoy structure.
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*/
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struct usbjoy * joy_open (int joynumber);
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/*
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Function: joy_name
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Returns Joystick's name.
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Parameters:
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joy - Selected joystick.
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Returns:
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Joystick's name or NULL if <usbjoy> struct is empty.
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*/
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char * joy_name (struct usbjoy * joy);
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/*
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Function: joy_device
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Returns Joystick's device.
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Parameters:
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joy - Selected joystick.
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Returns:
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Joystick's device or NULL if <usbjoy> struct is empty.
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*/
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char * joy_device (struct usbjoy * joy);
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/*
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Function: joy_buttons
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Returns Joystick's buttons number.
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Parameters:
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joy - Selected joystick.
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Returns:
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Joystick's buttons or 0 if <usbjoy> struct is empty.
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*/
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int joy_buttons (struct usbjoy * joy);
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/*
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Function: joy_axes
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Returns Joystick's axes number.
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Parameters:
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joy - Selected joystick.
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Returns:
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Joystick's axes or 0 if <usbjoy> struct is empty.
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*/
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int joy_axes (struct usbjoy * joy);
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/*
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Function: joy_update
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Updates Joystick's internal information (<statebuttons> and <stateaxes> fields).
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Parameters:
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joy - Selected joystick.
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Returns:
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0 - No events registered (no need to update).
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1 - Events registered (a button or axe has been pushed).
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-1 - Error: <usbjoy> struct is empty.
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*/
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int joy_update (struct usbjoy * joy);
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/*
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Function: joy_getbutton
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Returns Joystick's button information.
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Parameters:
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button - Button which value you want to know (from 0 to 31).
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joy - Selected joystick.
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Returns:
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0 - Button NOT pushed.
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1 - Button pushed.
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-1 - Error: <usbjoy> struct is empty.
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*/
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int joy_getbutton (int button, struct usbjoy * joy);
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/*
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Function: joy_getaxe
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Returns Joystick's axes information.
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Parameters:
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axe - Axe which value you want to know (see <Axes values>).
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joy - Selected joystick.
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Returns:
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0 - Direction NOT pushed.
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1 - Direction pushed.
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-1 - Error: <usbjoy> struct is empty.
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*/
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int joy_getaxe (int axe, struct usbjoy * joy);
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/*
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Function: joy_close
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Closes selected joystick's file descriptor and detroys it's fields.
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Parameters:
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joy - Selected joystick.
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Returns:
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0 - Joystick successfully closed.
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-1 - Error: <usbjoy> struct is empty.
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*/
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int joy_close (struct usbjoy * joy);
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/* gp2x stuff */
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extern int num_of_joys;
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extern struct usbjoy *joys[4];
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void gp2x_usbjoy_update(void);
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void gp2x_usbjoy_init(void);
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int gp2x_usbjoy_check(int joyno);
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int gp2x_usbjoy_check2(int joyno);
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void gp2x_usbjoy_deinit(void);
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#endif // USBJOY_H
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