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/*
* gamepad.c: A plugin for the Video Disk Recorder
*
* See the README file for copyright information and how to reach the author.
*
* $Id$
*/
#include "gamepad_handler.h"
#include <linux/joystick.h>
#include <vdr/tools.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/time.h>
cGamepadHandler::cGamepadHandler() : m_fd(0)
{
}
cGamepadHandler::~cGamepadHandler()
{
disconnect();
}
bool cGamepadHandler::connect(const char* device)
{
this->m_fd = open(device, O_RDONLY);
return this->m_fd;
}
void cGamepadHandler::disconnect()
{
if (m_fd)
{
close(this->m_fd);
this->m_fd = 0;
}
}
bool cGamepadHandler::ready()
{
return (this->m_fd > 0);
}
int cGamepadHandler::buttons()
{
char buttons;
ioctl(this->m_fd, JSIOCGBUTTONS, &buttons);
return (int)buttons;
}
int cGamepadHandler::axes()
{
char axes;
ioctl(this->m_fd, JSIOCGAXES, &axes);
return (int)axes;
}
char* cGamepadHandler::name()
{
char* name = new char[128];
ioctl(this->m_fd, JSIOCGNAME(128), name);
return name;
}
cGamepadHandler::generic_event* cGamepadHandler::event()
{
js_event raw_event;
int read_bytes;
fd_set set;
struct timeval timeout;
FD_ZERO(&set);
FD_SET(this->m_fd, &set);
timeout.tv_sec = 1;
timeout.tv_usec = 0;
if (select(FD_SETSIZE, &set, NULL, NULL, &timeout) > 0)
{
read_bytes = read(this->m_fd, &raw_event, sizeof(raw_event));
if (read_bytes == sizeof(raw_event))
{
if (raw_event.type == JS_EVENT_BUTTON)
{
if (raw_event.value < MAX_NUM_BUTTONS)
{
if (raw_event.value == 1) // button pressed
{
dsyslog("[gamepad] Pressed %d", raw_event.number);
this->m_event.type = PRESS;
}
else // button released
{
dsyslog("[gamepad] Released %d", raw_event.number);
this->m_event.type = RELEASE;
}
this->m_event.key = raw_event.number;
return &(this->m_event);
}
}
else if (raw_event.type == JS_EVENT_AXIS)
{
if (raw_event.number < MAX_NUM_AXIS)
{
int last_axis_state;
last_axis_state = m_axis_state[raw_event.number];
m_axis_state[raw_event.number] = raw_event.value;
if (last_axis_state < AXIS_DEAD_ZONE && last_axis_state > -AXIS_DEAD_ZONE)
{
this->m_event.key = MAX_NUM_BUTTONS + raw_event.number*2 + (raw_event.value >= 0);
this->m_event.type = PRESS;
if (raw_event.value >= AXIS_DEAD_ZONE)
{
dsyslog("[gamepad] Axis+ %d", raw_event.number);
return &(this->m_event);
}
else if (raw_event.value <= -AXIS_DEAD_ZONE)
{
dsyslog("[gamepad] Axis- %d", raw_event.number);
return &(this->m_event);
}
}
else if (raw_event.value < AXIS_DEAD_ZONE && raw_event.value > -AXIS_DEAD_ZONE)
{
dsyslog("[gamepad] Axis stop %d", raw_event.number);
this->m_event.key = MAX_NUM_BUTTONS + raw_event.number*2 + (last_axis_state >= 0);
this->m_event.type = RELEASE;
return &(this->m_event);
}
}
}
}
}
return NULL;
}
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