/usr/include/allegro/joystick.h is in liballegro4-dev 2:4.4.2-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* /\ _ \ /\_ \ /\_ \
* \ \ \L\ \\//\ \ \//\ \ __ __ _ __ ___
* \ \ __ \ \ \ \ \ \ \ /'__`\ /'_ `\/\`'__\/ __`\
* \ \ \/\ \ \_\ \_ \_\ \_/\ __//\ \L\ \ \ \//\ \L\ \
* \ \_\ \_\/\____\/\____\ \____\ \____ \ \_\\ \____/
* \/_/\/_/\/____/\/____/\/____/\/___L\ \/_/ \/___/
* /\____/
* \_/__/
*
* Joystick routines.
*
* By Shawn Hargreaves.
*
* See readme.txt for copyright information.
*/
#ifndef ALLEGRO_JOYSTICK_H
#define ALLEGRO_JOYSTICK_H
#include "base.h"
#ifdef __cplusplus
extern "C" {
#endif
#define JOY_TYPE_AUTODETECT -1
#define JOY_TYPE_NONE 0
#define MAX_JOYSTICKS 8
#define MAX_JOYSTICK_AXIS 3
#define MAX_JOYSTICK_STICKS 5
#define MAX_JOYSTICK_BUTTONS 32
/* information about a single joystick axis */
typedef struct JOYSTICK_AXIS_INFO
{
int pos;
int d1, d2;
AL_CONST char *name;
} JOYSTICK_AXIS_INFO;
/* information about one or more axis (a slider or directional control) */
typedef struct JOYSTICK_STICK_INFO
{
int flags;
int num_axis;
JOYSTICK_AXIS_INFO axis[MAX_JOYSTICK_AXIS];
AL_CONST char *name;
} JOYSTICK_STICK_INFO;
/* information about a joystick button */
typedef struct JOYSTICK_BUTTON_INFO
{
int b;
AL_CONST char *name;
} JOYSTICK_BUTTON_INFO;
/* information about an entire joystick */
typedef struct JOYSTICK_INFO
{
int flags;
int num_sticks;
int num_buttons;
JOYSTICK_STICK_INFO stick[MAX_JOYSTICK_STICKS];
JOYSTICK_BUTTON_INFO button[MAX_JOYSTICK_BUTTONS];
} JOYSTICK_INFO;
/* joystick status flags */
#define JOYFLAG_DIGITAL 1
#define JOYFLAG_ANALOGUE 2
#define JOYFLAG_CALIB_DIGITAL 4
#define JOYFLAG_CALIB_ANALOGUE 8
#define JOYFLAG_CALIBRATE 16
#define JOYFLAG_SIGNED 32
#define JOYFLAG_UNSIGNED 64
/* alternative spellings */
#define JOYFLAG_ANALOG JOYFLAG_ANALOGUE
#define JOYFLAG_CALIB_ANALOG JOYFLAG_CALIB_ANALOGUE
/* global joystick information */
AL_ARRAY(JOYSTICK_INFO, joy);
AL_VAR(int, num_joysticks);
typedef struct JOYSTICK_DRIVER /* driver for reading joystick input */
{
int id;
AL_CONST char *name;
AL_CONST char *desc;
AL_CONST char *ascii_name;
AL_METHOD(int, init, (void));
AL_METHOD(void, exit, (void));
AL_METHOD(int, poll, (void));
AL_METHOD(int, save_data, (void));
AL_METHOD(int, load_data, (void));
AL_METHOD(AL_CONST char *, calibrate_name, (int n));
AL_METHOD(int, calibrate, (int n));
} JOYSTICK_DRIVER;
AL_VAR(JOYSTICK_DRIVER, joystick_none);
AL_VAR(JOYSTICK_DRIVER *, joystick_driver);
AL_ARRAY(_DRIVER_INFO, _joystick_driver_list);
/* macros for constructing the driver list */
#define BEGIN_JOYSTICK_DRIVER_LIST \
_DRIVER_INFO _joystick_driver_list[] = \
{
#define END_JOYSTICK_DRIVER_LIST \
{ JOY_TYPE_NONE, &joystick_none, TRUE }, \
{ 0, NULL, 0 } \
};
AL_FUNC(int, install_joystick, (int type));
AL_FUNC(void, remove_joystick, (void));
AL_FUNC(int, poll_joystick, (void));
AL_FUNC(int, save_joystick_data, (AL_CONST char *filename));
AL_FUNC(int, load_joystick_data, (AL_CONST char *filename));
AL_FUNC(AL_CONST char *, calibrate_joystick_name, (int n));
AL_FUNC(int, calibrate_joystick, (int n));
#ifdef __cplusplus
}
#endif
#endif /* ifndef ALLEGRO_JOYSTICK_H */
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