git.sesse.net Git - ultimatescore/blob - client/event_device.cpp

   1 #include "event_device.h"
   2
   3 #include <dirent.h>
   4 #include <errno.h>
   5 #include <fcntl.h>
   6 #include <limits.h>
   7 #include <linux/input.h>
   8 #include <stdio.h>
   9 #include <stdlib.h>
  10 #include <string.h>
  11 #include <sys/ioctl.h>
  12 #include <unistd.h>
  13
  14 #include <QApplication>
  15 #include <QKeyEvent>
  16
  17 using namespace std;
  18
  19 using std::set;
  20 using std::pair;
  21
  22 EventDevice::EventDevice(const std::set<std::pair<unsigned, unsigned>> &accepted_usb_ids, QObject *receiver)
  23         : accepted_usb_ids(accepted_usb_ids), receiver(receiver)
  24 {
  25         init();
  26 }
  27
  28 void EventDevice::init()
  29 {
  30         /* scan /dev/input for event devices */
  31         DIR *dir = opendir("/dev/input");
  32         struct dirent *de;
  33         bool found = false;
  34         struct input_id found_id;
  35         char path[PATH_MAX];
  36
  37         if (dir == NULL) {
  38                 perror("/dev/input");
  39                 exit(1);
  40         }
  41
  42         while ((de = readdir(dir))) {
  43                 if (strncmp(de->d_name, "event", 5) != 0)
  44                         continue;
  45
  46                 sprintf(path, "/dev/input/%s", de->d_name);
  47                 fd = open(path, O_RDONLY);
  48                 if (fd == -1) {
  49                         fprintf(stderr, "Warning, skipping %s: %s\n",
  50                                 path, strerror(errno));
  51                 } else {
  52                         struct input_id id;
  53                         if (ioctl(fd, EVIOCGID, &id) == -1) {
  54                                 fprintf(stderr, "ioctl on %s: %s\n",
  55                                         path, strerror(errno));
  56                                 exit(1);
  57                         }
  58
  59                         if (accepted_usb_ids.count({ id.vendor, id.product }) != 0) {
  60                                 found = true;
  61                                 found_id = id;
  62                                 break;
  63                         }
  64
  65                         close(fd);
  66                 }
  67         }
  68
  69         closedir(dir);
  70
  71         if (found) {
  72                 char name[256];
  73                 ioctl(fd, EVIOCGNAME(255), name);
  74
  75                 fprintf(stderr, "Found device (%04x,%04x) at %s: \"%s\"\n",
  76                         found_id.vendor, found_id.product, path, name);
  77         } else {
  78                 fprintf(stderr, "Could not find the USB device\n");
  79         }
  80 }
  81
  82 void EventDevice::start_thread()
  83 {
  84         thr = thread(&EventDevice::thread_func, this);
  85         thr.detach();
  86 }
  87
  88 void EventDevice::thread_func()
  89 {
  90         struct input_event iev;
  91         int ret;
  92
  93         for ( ;; ) {
  94                 if (fd != -1) {
  95                         ret = read(fd, &iev, sizeof(iev));
  96                         if (ret != sizeof(iev)) {
  97                                 perror("read");
  98                                 fd = -1;
  99                         }
 100                 }
 101                 if (fd == -1) {
 102                         sleep(5);
 103                         init();
 104                         continue;
 105                 }
 106
 107                 if (iev.type != EV_KEY)
 108                         continue;
 109                 if (iev.value != 1)
 110                         continue;
 111
 112                 QEvent *event = nullptr;
 113                 switch (iev.code) {
 114                 case 11:
 115                         event = new QKeyEvent(QEvent::KeyPress, Qt::Key_0, Qt::NoModifier, "0");
 116                         break;
 117                 case 2:
 118                         event = new QKeyEvent(QEvent::KeyPress, Qt::Key_1, Qt::NoModifier, "1");
 119                         break;
 120                 case 3:
 121                         event = new QKeyEvent(QEvent::KeyPress, Qt::Key_2, Qt::NoModifier, "2");
 122                         break;
 123                 case 4:
 124                         event = new QKeyEvent(QEvent::KeyPress, Qt::Key_3, Qt::NoModifier, "3");
 125                         break;
 126                 case 5:
 127                         event = new QKeyEvent(QEvent::KeyPress, Qt::Key_4, Qt::NoModifier, "4");
 128                         break;
 129                 case 6:
 130                         event = new QKeyEvent(QEvent::KeyPress, Qt::Key_5, Qt::NoModifier, "5");
 131                         break;
 132                 case 7:
 133                         event = new QKeyEvent(QEvent::KeyPress, Qt::Key_6, Qt::NoModifier, "6");
 134                         break;
 135                 case 8:
 136                         event = new QKeyEvent(QEvent::KeyPress, Qt::Key_7, Qt::NoModifier, "7");
 137                         break;
 138                 case 9:
 139                         event = new QKeyEvent(QEvent::KeyPress, Qt::Key_8, Qt::NoModifier, "8");
 140                         break;
 141                 case 10:
 142                         event = new QKeyEvent(QEvent::KeyPress, Qt::Key_9, Qt::NoModifier, "9");
 143                         break;
 144                 case 30:
 145                         event = new QKeyEvent(QEvent::KeyPress, Qt::Key_A, Qt::ShiftModifier, "A");
 146                         break;
 147                 case 48:
 148                         event = new QKeyEvent(QEvent::KeyPress, Qt::Key_B, Qt::ShiftModifier, "B");
 149                         break;
 150                 case 46:
 151                         event = new QKeyEvent(QEvent::KeyPress, Qt::Key_C, Qt::ShiftModifier, "C");
 152                         break;
 153                 case 32:
 154                         event = new QKeyEvent(QEvent::KeyPress, Qt::Key_D, Qt::ShiftModifier, "D");
 155                         break;
 156                 case 18:
 157                         event = new QKeyEvent(QEvent::KeyPress, Qt::Key_E, Qt::ShiftModifier, "E");
 158                         break;
 159                 case 33:
 160                         event = new QKeyEvent(QEvent::KeyPress, Qt::Key_F, Qt::ShiftModifier, "F");
 161                         break;
 162                 case 14:
 163                         event = new QKeyEvent(QEvent::KeyPress, Qt::Key_Backspace, Qt::NoModifier);
 164                         break;
 165                 case 28:
 166                         event = new QKeyEvent(QEvent::KeyPress, Qt::Key_Enter, Qt::NoModifier);
 167                         break;
 168                 }
 169                 if (event) {
 170                         QApplication::postEvent(receiver, event);
 171                 }
 172                 // printf("iev.type=%d iev.value=%d iev.code=%d\n", iev.type, iev.value, iev.code);
 173         }
 174 }
 175