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/**
* Copyright (C) 2003 Jeremy Booth (jeremy@newdawnsoftware.com)
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer. Redistributions in binary
* form must reproduce the above copyright notice, this list of conditions and
* the following disclaimer in the documentation and/or other materials provided
* with the distribution.
* The name of the author may not be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE
*/
#include "eventInterfaceTypes.h"
#include "JoystickDevice.h"
#include <stdio.h>
#include <linux/input.h>
#include <linux/joystick.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
#include <malloc.h>
#include <errno.h>
#include "logger.h"
JoystickDevice::JoystickDevice(char *deviceFileName) {
char tempName[Device::MAX_NAME_LENGTH-1] = "Unknown";
int i;
LOG_TRACE("Trying to open %s\n", deviceFileName);
fd = open(deviceFileName, O_RDWR | O_NONBLOCK);
/*if(fd<0) {
char errorMessage[512];
sprintf(errorMessage, "Error opening device %s\n", deviceFileName);
perror(errorMessage);
}*/
if(fd>0){
LOG_TRACE("Opened %s, trying to get device name\n", deviceFileName);
if(ioctl(fd, JSIOCGNAME(sizeof(tempName)), tempName) < 0) {
LOG_TRACE("Failed to get device name for %s\n", deviceFileName);
char errorMessage[512];
sprintf(errorMessage, "Error reading device %s\n", deviceFileName);
perror(errorMessage);
}
int namelength=strlen(tempName);
name = (char *)malloc(namelength+1);
strncpy(name,tempName, namelength+1);
char tempNumButtons;
char tempNumAxes;
LOG_TRACE("Getting button and axes information for %s\n", deviceFileName);
ioctl (fd, JSIOCGBUTTONS, &tempNumButtons);
ioctl (fd, JSIOCGAXES, &tempNumAxes);
numButtons = tempNumButtons;
numAbsAxes = tempNumAxes;
//fprintf(stderr, "Got joystick %s with %d buttons and %d axes\n", tempName, numButtons, numAbsAxes);
//buttonData = (uint8_t *)malloc(numButtons * sizeof(uint8_t));
buttonData = new uint8_t[numButtons];
//absAxesData = (int *)malloc(numAbsAxes * sizeof(int));
absAxesData = new int[numAbsAxes];
LOG_TRACE("Initialisation of %s completed\n", deviceFileName);
inited = 1;
} else {
LOG_TRACE("Failed to open device %s\n", deviceFileName);
inited = 0;
}
}
int JoystickDevice::isValidDevice() {
return inited;
}
int JoystickDevice::getNumberRelAxes(){
if(inited!=1) return -1;
return 0;
}
int JoystickDevice::getNumberAbsAxes(){
if(inited!=1) return -1;
return numAbsAxes;
}
int JoystickDevice::getNumberButtons(){
if(inited!=1) return -1;
return numButtons;
}
const char *JoystickDevice::getName(){
return name;
}
int JoystickDevice::getBusType(){
if(inited!=1) return -1;
return 0;
}
int JoystickDevice::getVendorID(){
if(inited!=1) return -1;
return 0;
}
int JoystickDevice::getProductID(){
if(inited!=1) return -1;
return 0;
}
int JoystickDevice::getVersion(){
if(inited!=1) return -1;
return 0;
}
void JoystickDevice::getSupportedRelAxes(int supportedAxis[]){
}
void JoystickDevice::getSupportedAbsAxes(int supportedAxis[]){
}
void JoystickDevice::getSupportedButtons(int supportedButtons[]){
}
/**
* A return value of -1 means error, 0 means ok, but no change
* a return of >0 means the data for this device has changed
*/
int JoystickDevice::poll(){
struct js_event event;
int numEvents = 0;
while(read(fd, &event, sizeof event) > 0) {
numEvents++;
event.type &= ~JS_EVENT_INIT;
if(event.type == JS_EVENT_BUTTON) {
buttonData[event.number] = event.value;
} else if(event.type == JS_EVENT_AXIS) {
absAxesData[event.number] = event.value;
}
}
// EAGAIN is returned when the queue is empty
if(errno != EAGAIN) {
printf("Something went wrong getting an event\n");
}
return numEvents;
}
void JoystickDevice::getPolledData(int relAxesData[], int absAxesData[], int buttonData[]){
int i;
if(inited!=1) return;
for(i=0;i<numAbsAxes;i++) {
(absAxesData)[i] = this->absAxesData[i];
}
for(i=0;i<numButtons;i++) {
(buttonData)[i] = this->buttonData[i];
}
}
int JoystickDevice::getAbsAxisMinimum(int axisNumber) {
return -32767;
}
int JoystickDevice::getAbsAxisMaximum(int axisNumber) {
return 32767;
}
int JoystickDevice::getAbsAxisFuzz(int axisNumber) {
return 0;
}
bool JoystickDevice::getFFEnabled() {
return false;
}
void JoystickDevice::rumble(float force) {
return;
}
void JoystickDevice::cleanup() {
close(fd);
}
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