dlls/winmm/joystick/joystick.c

   1 /* -*- tab-width: 8; c-basic-offset: 4 -*- */
   2 /*
   3  * joystick functions
   4  *
   5  * Copyright 1997 Andreas Mohr
   6  *
   7  * nearly all joystick functions can be regarded as obsolete,
   8  * as Linux (2.1.x) now supports extended joysticks
   9  * with a completely new joystick driver interface
  10  * new driver's docu says:
  11  * "For backward compatibility the old interface is still included,
  12  * but will be dropped in the future."
  13  * Thus we should implement the new interface and at most keep the old
  14  * routines for backward compatibility.
  15  */
  16
  17 /*
  18  * Wolfgang Schwotzer
  19  *
  20  *    01/2000    added support for new joystick driver
  21  *
  22  */
  23
  24 #include "config.h"
  25
  26 #include <unistd.h>
  27 #include <stdio.h>
  28 #include <stdlib.h>
  29 #include <string.h>
  30 #include <fcntl.h>
  31 #include <sys/ioctl.h>
  32 #ifdef HAVE_LINUX_JOYSTICK_H
  33 #include <linux/joystick.h>
  34 #define JOYDEV "/dev/js%d"
  35 #endif
  36 #ifdef HAVE_SYS_ERRNO_H
  37 #include <sys/errno.h>
  38 #endif
  39 #include "windef.h"
  40 #include "wingdi.h"
  41 #include "winuser.h"
  42 #include "mmddk.h"
  43 #include "driver.h"
  44 #include "debugtools.h"
  45
  46 DEFAULT_DEBUG_CHANNEL(joystick);
  47
  48 #ifdef HAVE_LINUX_JOYSTICK_H
  49
  50 #define MAXJOYSTICK     (JOYSTICKID2 + 1)
  51
  52 typedef struct tagWINE_JSTCK {
  53     int         joyIntf;
  54     int         in_use;
  55 } WINE_JSTCK;
  56
  57 static  WINE_JSTCK      JSTCK_Data[MAXJOYSTICK];
  58
  59 /**************************************************************************
  60  *                              JSTCK_drvGet                    [internal]
  61  */
  62 static  WINE_JSTCK*     JSTCK_drvGet(DWORD dwDevID)
  63 {
  64     int p;
  65
  66     if ((dwDevID - (DWORD)JSTCK_Data) % sizeof(JSTCK_Data[0]) != 0)
  67         return NULL;
  68     p = (dwDevID - (DWORD)JSTCK_Data) / sizeof(JSTCK_Data[0]);
  69     if (p < 0 || p >= MAXJOYSTICK || !((WINE_JSTCK*)dwDevID)->in_use)
  70         return NULL;
  71
  72     return (WINE_JSTCK*)dwDevID;
  73 }
  74
  75 /**************************************************************************
  76  *                              JSTCK_drvOpen                   [internal]
  77  */
  78 static  DWORD   JSTCK_drvOpen(LPSTR str, DWORD dwIntf)
  79 {
  80     if (dwIntf >= MAXJOYSTICK || JSTCK_Data[dwIntf].in_use)
  81         return 0;
  82
  83     JSTCK_Data[dwIntf].joyIntf = dwIntf;
  84     JSTCK_Data[dwIntf].in_use = 1;
  85     return (DWORD)&JSTCK_Data[dwIntf];
  86 }
  87
  88 /**************************************************************************
  89  *                              JSTCK_drvClose                  [internal]
  90  */
  91 static  DWORD   JSTCK_drvClose(DWORD dwDevID)
  92 {
  93     WINE_JSTCK* jstck = JSTCK_drvGet(dwDevID);
  94
  95     if (jstck == NULL)
  96         return 0;
  97     jstck->in_use = 0;
  98     return 1;
  99 }
 100
 101 struct js_status
 102 {
 103     int buttons;
 104     int x;
 105     int y;
 106 };
 107
 108 /**************************************************************************
 109  *                              JSTCK_OpenDevice           [internal]
 110  */
 111 static  int     JSTCK_OpenDevice(WINE_JSTCK* jstick)
 112 {
 113     char        buf[20];
 114     int         flags;
 115
 116     sprintf(buf, JOYDEV, jstick->joyIntf);
 117 #ifdef HAVE_LINUX_22_JOYSTICK_API
 118     flags = O_RDONLY | O_NONBLOCK;
 119 #else
 120     flags = O_RDONLY;
 121 #endif
 122     return open(buf, flags);
 123 }
 124
 125 /**************************************************************************
 126  *                              JoyGetDevCaps           [MMSYSTEM.102]
 127  */
 128 static  LONG    JSTCK_GetDevCaps(DWORD dwDevID, LPJOYCAPSA lpCaps, DWORD dwSize)
 129 {
 130     WINE_JSTCK* jstck;
 131 #ifdef HAVE_LINUX_22_JOYSTICK_API
 132     int         dev;
 133     char        nrOfAxes;
 134     char        nrOfButtons;
 135     char        identString[MAXPNAMELEN];
 136     int         driverVersion;
 137 #endif
 138
 139     if ((jstck = JSTCK_drvGet(dwDevID)) == NULL)
 140         return MMSYSERR_NODRIVER;
 141
 142 #ifdef HAVE_LINUX_22_JOYSTICK_API
 143
 144     if ((dev = JSTCK_OpenDevice(jstck)) < 0) return JOYERR_PARMS;
 145     ioctl(dev, JSIOCGAXES, &nrOfAxes);
 146     ioctl(dev, JSIOCGBUTTONS, &nrOfButtons);
 147     ioctl(dev, JSIOCGVERSION, &driverVersion);
 148     ioctl(dev, JSIOCGNAME(sizeof(identString)), &identString);
 149     TRACE("Driver: 0x%06x, Name: %s, #Axes: %d, #Buttons: %d\n",
 150           driverVersion, identString, nrOfAxes, nrOfButtons);
 151     lpCaps->wMid = MM_MICROSOFT;
 152     lpCaps->wPid = MM_PC_JOYSTICK;
 153     strncpy(lpCaps->szPname, identString, MAXPNAMELEN);
 154     lpCaps->szPname[MAXPNAMELEN-1] = '\0';
 155     lpCaps->wXmin = 0;
 156     lpCaps->wXmax = 0xFFFF;
 157     lpCaps->wYmin = 0;
 158     lpCaps->wYmax = 0xFFFF;
 159     lpCaps->wZmin = 0;
 160     lpCaps->wZmax = (nrOfAxes >= 3) ? 0xFFFF : 0;
 161     lpCaps->wNumButtons = nrOfButtons;
 162     if (dwSize == sizeof(JOYCAPSA)) {
 163         /* since we supose ntOfAxes <= 6 in the following code, do it explicitely */
 164         if (nrOfAxes > 6) nrOfAxes = 6;
 165         /* complete 95 structure */
 166         lpCaps->wRmin = 0;
 167         lpCaps->wRmax = nrOfAxes >= 4 ? 0xFFFF : 0;
 168         lpCaps->wUmin = 0;
 169         lpCaps->wUmax = nrOfAxes >= 5 ? 0xFFFF : 0;
 170         lpCaps->wVmin = 0;
 171         lpCaps->wVmax = nrOfAxes >= 6 ? 0xFFFF : 0;
 172         lpCaps->wMaxAxes = 6; /* same as MS Joystick Driver */
 173         lpCaps->wNumAxes = nrOfAxes; /* nr of axes in use */
 174         lpCaps->wMaxButtons = 32; /* same as MS Joystick Driver */
 175         strcpy(lpCaps->szRegKey, "");
 176         strcpy(lpCaps->szOEMVxD, "");
 177         lpCaps->wCaps = 0;
 178         switch(nrOfAxes) {
 179         case 6: lpCaps->wCaps |= JOYCAPS_HASV;
 180         case 5: lpCaps->wCaps |= JOYCAPS_HASU;
 181         case 4: lpCaps->wCaps |= JOYCAPS_HASR;
 182         case 3: lpCaps->wCaps |= JOYCAPS_HASZ;
 183             /* FIXME: don't know how to detect for
 184                JOYCAPS_HASPOV, JOYCAPS_POV4DIR, JOYCAPS_POVCTS */
 185         }
 186     }
 187     close(dev);
 188
 189 #else
 190     lpCaps->wMid = MM_MICROSOFT;
 191     lpCaps->wPid = MM_PC_JOYSTICK;
 192     strcpy(lpCaps->szPname, "WineJoy"); /* joystick product name */
 193     lpCaps->wXmin = 0;
 194     lpCaps->wXmax = 0xFFFF;
 195     lpCaps->wYmin = 0;
 196     lpCaps->wYmax = 0xFFFF;
 197     lpCaps->wZmin = 0;
 198     lpCaps->wZmax = 0;
 199     lpCaps->wNumButtons = 2;
 200     if (dwSize == sizeof(JOYCAPSA)) {
 201         /* complete 95 structure */
 202         lpCaps->wRmin = 0;
 203         lpCaps->wRmax = 0;
 204         lpCaps->wUmin = 0;
 205         lpCaps->wUmax = 0;
 206         lpCaps->wVmin = 0;
 207         lpCaps->wVmax = 0;
 208         lpCaps->wCaps = 0;
 209         lpCaps->wMaxAxes = 2;
 210         lpCaps->wNumAxes = 2;
 211         lpCaps->wMaxButtons = 4;
 212         strcpy(lpCaps->szRegKey,"");
 213         strcpy(lpCaps->szOEMVxD,"");
 214     }
 215 #endif
 216
 217     return JOYERR_NOERROR;
 218 }
 219
 220 /**************************************************************************
 221  *                              JSTCK_GetPos                    [internal]
 222  */
 223 static LONG     JSTCK_GetPosEx(DWORD dwDevID, LPJOYINFOEX lpInfo)
 224 {
 225     WINE_JSTCK*         jstck;
 226     int                 dev;
 227 #ifdef HAVE_LINUX_22_JOYSTICK_API
 228     struct js_event     ev;
 229 #else
 230     struct js_status    js;
 231     int                 dev_stat;
 232 #endif
 233
 234     if ((jstck = JSTCK_drvGet(dwDevID)) == NULL)
 235         return MMSYSERR_NODRIVER;
 236
 237     if ((dev = JSTCK_OpenDevice(jstck)) < 0) return JOYERR_PARMS;
 238
 239 #ifdef HAVE_LINUX_22_JOYSTICK_API
 240     /* After opening the device it's state can be
 241        read with JS_EVENT_INIT flag */
 242     while ((read(dev, &ev, sizeof(struct js_event))) > 0) {
 243         if (ev.type == (JS_EVENT_AXIS | JS_EVENT_INIT)) {
 244             switch (ev.number) {
 245             case 0:
 246                 if (lpInfo->dwFlags & JOY_RETURNX)
 247                     lpInfo->dwXpos   = ev.value + 32767;
 248                 break;
 249             case 1:
 250                 if (lpInfo->dwFlags & JOY_RETURNY)
 251                     lpInfo->dwYpos   = ev.value + 32767;
 252                 break;
 253             case 2:
 254                 if (lpInfo->dwFlags & JOY_RETURNZ)
 255                     lpInfo->dwZpos   = ev.value + 32767;
 256                 break;
 257             case 3:
 258                 if (lpInfo->dwFlags & JOY_RETURNR)
 259                     lpInfo->dwRpos   = ev.value + 32767;
 260             case 4:
 261                 if (lpInfo->dwFlags & JOY_RETURNU)
 262                     lpInfo->dwUpos   = ev.value + 32767;
 263             case 5:
 264                 if (lpInfo->dwFlags & JOY_RETURNV)
 265                     lpInfo->dwVpos   = ev.value + 32767;
 266                 break;
 267             default:
 268                 FIXME("Unknown joystick event '%d'\n", ev.number);
 269             }
 270         } else if (ev.type == (JS_EVENT_BUTTON | JS_EVENT_INIT)) {
 271             if (lpInfo->dwFlags & JOY_RETURNBUTTONS) {
 272                 if (ev.value) {
 273                     lpInfo->dwButtons |= (1 << ev.number);
 274                     /* FIXME: what to do for this field when
 275                      * multiple buttons are depressed ?
 276                      */
 277                     lpInfo->dwButtonNumber = ev.number + 1;
 278                 }
 279             }
 280         }
 281     }
 282     /* EAGAIN is returned when the queue is empty */
 283     if (errno != EAGAIN) {
 284         /* FIXME: error should not be ignored */
 285         ERR("Error while reading joystick state (%d)\n", errno);
 286     }
 287 #else
 288     dev_stat = read(dev, &js, sizeof(js));
 289     if (dev_stat != sizeof(js)) {
 290         close(dev);
 291         return JOYERR_UNPLUGGED; /* FIXME: perhaps wrong, but what should I return else ? */
 292     }
 293     js.x = js.x<<8;
 294     js.y = js.y<<8;
 295     if (lpInfo->dwFlags & JOY_RETURNX)
 296         lpInfo->dwXpos = js.x;   /* FIXME: perhaps multiply it somehow ? */
 297     if (lpInfo->dwFlags & JOY_RETURNY)
 298         lpInfo->dwYpos = js.y;
 299     if (lpInfo->dwFlags & JOY_RETURNBUTTONS)
 300         lpInfo->dwButtons = js.buttons;
 301 #endif
 302
 303     close(dev);
 304
 305     TRACE("x: %ld, y: %ld, z: %ld, r: %ld, u: %ld, v: %ld, buttons: 0x%04x, flags: 0x%04x\n",
 306           lpInfo->dwXpos, lpInfo->dwYpos, lpInfo->dwZpos,
 307           lpInfo->dwRpos, lpInfo->dwUpos, lpInfo->dwVpos,
 308           (unsigned int)lpInfo->dwButtons,
 309           (unsigned int)lpInfo->dwFlags);
 310
 311     return JOYERR_NOERROR;
 312 }
 313
 314 /**************************************************************************
 315  *                              JSTCK_GetPos                    [internal]
 316  */
 317 static LONG     JSTCK_GetPos(DWORD dwDevID, LPJOYINFO lpInfo)
 318 {
 319     JOYINFOEX   ji;
 320     LONG        ret;
 321
 322     memset(&ji, 0, sizeof(ji));
 323
 324     ji.dwSize = sizeof(ji);
 325     ji.dwFlags = JOY_RETURNX | JOY_RETURNY | JOY_RETURNZ | JOY_RETURNBUTTONS;
 326     ret = JSTCK_GetPosEx(dwDevID, &ji);
 327     if (ret == JOYERR_NOERROR)  {
 328         lpInfo->wXpos    = ji.dwXpos;
 329         lpInfo->wYpos    = ji.dwYpos;
 330         lpInfo->wZpos    = ji.dwZpos;
 331         lpInfo->wButtons = ji.dwButtons;
 332     }
 333
 334     return ret;
 335 }
 336
 337 /**************************************************************************
 338  *                              JSTCK_DriverProc                [internal]
 339  */
 340 LONG CALLBACK   JSTCK_DriverProc(DWORD dwDevID, HDRVR hDriv, DWORD wMsg,
 341                                  DWORD dwParam1, DWORD dwParam2)
 342 {
 343     /* EPP     TRACE("(%08lX, %04X, %08lX, %08lX, %08lX)\n",  */
 344     /* EPP        dwDevID, hDriv, wMsg, dwParam1, dwParam2); */
 345
 346     switch(wMsg) {
 347     case DRV_LOAD:              return 1;
 348     case DRV_FREE:              return 1;
 349     case DRV_OPEN:              return JSTCK_drvOpen((LPSTR)dwParam1, dwParam2);
 350     case DRV_CLOSE:             return JSTCK_drvClose(dwDevID);
 351     case DRV_ENABLE:            return 1;
 352     case DRV_DISABLE:           return 1;
 353     case DRV_QUERYCONFIGURE:    return 1;
 354     case DRV_CONFIGURE:         MessageBoxA(0, "JoyStick MultiMedia Driver !", "JoyStick Driver", MB_OK);       return 1;
 355     case DRV_INSTALL:           return DRVCNF_RESTART;
 356     case DRV_REMOVE:            return DRVCNF_RESTART;
 357
 358     case JDD_GETNUMDEVS:        return 1;
 359     case JDD_GETDEVCAPS:        return JSTCK_GetDevCaps(dwDevID, (LPJOYCAPSA)dwParam1, dwParam2);
 360     case JDD_GETPOS:            return JSTCK_GetPos(dwDevID, (LPJOYINFO)dwParam1);
 361     case JDD_SETCALIBRATION:
 362     case JDD_CONFIGCHANGED:     return JOYERR_NOCANDO;
 363     case JDD_GETPOSEX:          return JSTCK_GetPosEx(dwDevID, (LPJOYINFOEX)dwParam1);
 364     default:
 365         return DefDriverProc(dwDevID, hDriv, wMsg, dwParam1, dwParam2);
 366     }
 367 }
 368
 369 #else
 370
 371 /**************************************************************************
 372  *                              JSTCK_DriverProc                [internal]
 373  */
 374 LONG CALLBACK   JSTCK_DriverProc(DWORD dwDevID, HDRVR hDriv, DWORD wMsg,
 375                                  DWORD dwParam1, DWORD dwParam2)
 376 {
 377     /* EPP     TRACE("(%08lX, %04X, %08lX, %08lX, %08lX)\n",  */
 378     /* EPP        dwDevID, hDriv, wMsg, dwParam1, dwParam2); */
 379
 380     switch(wMsg) {
 381     case DRV_LOAD:
 382     case DRV_FREE:
 383     case DRV_OPEN:
 384     case DRV_CLOSE:
 385     case DRV_ENABLE:
 386     case DRV_DISABLE:
 387     case DRV_QUERYCONFIGURE:    return 0;
 388     case DRV_CONFIGURE:         MessageBoxA(0, "JoyStick MultiMedia Driver !", "JoyStick Driver", MB_OK);       return 1;
 389     case DRV_INSTALL:           return DRVCNF_RESTART;
 390     case DRV_REMOVE:            return DRVCNF_RESTART;
 391     default:
 392         return DefDriverProc(dwDevID, hDriv, wMsg, dwParam1, dwParam2);
 393     }
 394 }
 395
 396 #endif