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/* Copyright (c) 2013 Stanislaw Halik <sthalik@misaki.pl>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*/
#include "ftnoir_tracker_linux_joystick.h"
#include "api/plugin-api.hpp"
#include "compat/math.hpp"
#include <QMutexLocker>
joystick::joystick()
{
QString device = getJoystickDevice(s.guid);
joy_fd = open(device.toUtf8().data(), O_RDONLY | O_NONBLOCK);
}
joystick::~joystick() {
if (joy_fd > 0) close(joy_fd);
}
module_status joystick::start_tracker(QFrame *)
{
if (joy_fd == -1) return error("Couldn't open joystick");
return status_ok();
}
void joystick::data(double *data)
{
int map[6] = {
s.joy_1 - 1,
s.joy_2 - 1,
s.joy_3 - 1,
s.joy_4 - 1,
s.joy_5 - 1,
s.joy_6 - 1,
};
const double limits[] = {
100,
100,
100,
180,
180,
180
};
const QString guid = s.guid;
int axes[8];
struct js_event event;
bool ret = true;
if (read(joy_fd, &event, sizeof(event)) > 0)
{
switch (event.type)
{
case JS_EVENT_AXIS:
if (event.number >= 8) break;
axes_state[event.number] = event.value;
break;
default:
/* Ignore init/button events. */
break;
}
}
for (int i = 0; i < 6; i++)
{
axes[i] = axes_state[i];
}
if (ret)
{
for (int i = 0; i < 6; i++)
{
int k = map[i];
if (k < 0 || k >= 8)
data[i] = 0;
else
data[i] = clamp(axes[k] * limits[i] / AXIS_MAX,
-limits[i], limits[i]);
}
}
}
OPENTRACK_DECLARE_TRACKER(joystick, dialog_joystick, joystickDll)
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