dlls/winmm/joystick.c

   1 /*
   2  * joystick functions
   3  *
   4  * Copyright 1997 Andreas Mohr
   5  *
   6  * nearly all joystick functions can be regarded as obsolete,
   7  * as Linux (2.1.x) now supports extended joysticks
   8  * with a completely new joystick driver interface
   9  * new driver's docu says:
  10  * "For backward compatibility the old interface is still included,
  11  * but will be dropped in the future."
  12  * Thus we should implement the new interface and at most keep the old
  13  * routines for backward compatibility.
  14  */
  15
  16 #include "config.h"
  17
  18 #include <unistd.h>
  19 #include <stdlib.h>
  20 #include <string.h>
  21 #include <fcntl.h>
  22 #include <sys/ioctl.h>
  23 #ifdef HAVE_SYS_ERRNO_H
  24 #include <sys/errno.h>
  25 #endif
  26 #include "winuser.h"
  27 #include "winbase.h"
  28 #include "mmsystem.h"
  29 #include "debugtools.h"
  30
  31 DEFAULT_DEBUG_CHANNEL(mmsys)
  32
  33 #define MAXJOYDRIVERS   4
  34
  35 static int count_use[MAXJOYDRIVERS] = {0, 0, 0, 0};
  36 static int dev_stat;
  37 static int joy_nr_open = 0;
  38 static BOOL16 joyCaptured = FALSE;
  39 static HWND16 CaptureWnd[MAXJOYDRIVERS] = {0, 0};
  40 static int joy_dev[MAXJOYDRIVERS] = {-1, -1,-1,-1};
  41 static JOYINFO16 joyCapData[MAXJOYDRIVERS];
  42 static unsigned int joy_threshold[MAXJOYDRIVERS] = {0, 0, 0, 0};
  43
  44 struct js_status
  45 {
  46     int buttons;
  47     int x;
  48     int y;
  49 };
  50
  51
  52 /**************************************************************************
  53  *                              joyOpenDriver           [internal]
  54  */
  55 BOOL16 joyOpenDriver(WORD wID)
  56 {
  57         char dev_name[] = "/dev/js%d";
  58         char    buf[20];
  59
  60         if (wID>3) return FALSE;
  61         if (joy_dev[wID] >= 0) return TRUE;
  62         sprintf(buf,dev_name,wID);
  63         if ((joy_dev[wID] = open(buf, O_RDONLY)) >= 0) {
  64                 joy_nr_open++;
  65                 return TRUE;
  66         } else
  67                 return FALSE;
  68 }
  69
  70 /**************************************************************************
  71  *                              joyCloseDriver           [internal]
  72  */
  73 void joyCloseDriver(WORD wID)
  74 {
  75         if (joy_dev[wID] >= 0) {
  76                 close(joy_dev[wID]);
  77                 joy_dev[wID] = -1;
  78                 joy_nr_open--;
  79         }
  80 }
  81
  82 /**************************************************************************
  83  *                              joySendMessages           [internal]
  84  */
  85 void joySendMessages(void)
  86 {
  87         int joy;
  88         struct js_status js;
  89
  90         if (joy_nr_open)
  91         {
  92             for (joy=0; joy < MAXJOYDRIVERS; joy++)
  93                 if (joy_dev[joy] >= 0) {
  94                         if (count_use[joy] > 250) {
  95                                 joyCloseDriver(joy);
  96                                 count_use[joy] = 0;
  97                         }
  98                         count_use[joy]++;
  99                 } else
 100                         return;
 101         }
 102         if (joyCaptured == FALSE) return;
 103
 104         TRACE(" --\n");
 105
 106         for (joy=0; joy < MAXJOYDRIVERS; joy++) {
 107                 if (joyOpenDriver(joy) == FALSE) continue;
 108                 dev_stat = read(joy_dev[joy], &js, sizeof(js));
 109                 if (dev_stat == sizeof(js)) {
 110                         js.x = js.x*37;
 111                         js.y = js.y*37;
 112                         if ((joyCapData[joy].wXpos != js.x) || (joyCapData[joy].wYpos != js.y)) {
 113                                 SendMessageA(CaptureWnd[joy], MM_JOY1MOVE + joy, js.buttons, MAKELONG(js.x, js.y));
 114                                 joyCapData[joy].wXpos = js.x;
 115                                 joyCapData[joy].wYpos = js.y;
 116                         }
 117                         if (joyCapData[joy].wButtons != js.buttons) {
 118                                 unsigned int ButtonChanged = (WORD)(joyCapData[joy].wButtons ^ js.buttons)<<8;
 119                                 if (joyCapData[joy].wButtons < js.buttons)
 120                                 SendMessageA(CaptureWnd[joy], MM_JOY1BUTTONDOWN + joy, ButtonChanged, MAKELONG(js.x, js.y));
 121                                 else
 122                                 if (joyCapData[joy].wButtons > js.buttons)
 123                                 SendMessageA(CaptureWnd[joy], MM_JOY1BUTTONUP
 124 + joy, ButtonChanged, MAKELONG(js.x, js.y));
 125                                 joyCapData[joy].wButtons = js.buttons;
 126                         }
 127                 }
 128         }
 129 }
 130
 131
 132 /**************************************************************************
 133  *                              JoyGetNumDevs           [MMSYSTEM.101]
 134  */
 135 UINT WINAPI joyGetNumDevs(void)
 136 {
 137         return joyGetNumDevs16();
 138 }
 139
 140 /**************************************************************************
 141  *                              JoyGetNumDevs           [MMSYSTEM.101]
 142  */
 143 UINT16 WINAPI joyGetNumDevs16(void)
 144 {
 145     int joy;
 146     UINT16 joy_cnt = 0;
 147
 148     for (joy=0; joy<MAXJOYDRIVERS; joy++)
 149         if (joyOpenDriver(joy) == TRUE) {
 150                 joyCloseDriver(joy);
 151                 joy_cnt++;
 152     }
 153     TRACE("returning %d\n", joy_cnt);
 154     if (!joy_cnt) ERR("No joystick found - "
 155                           "perhaps get joystick-0.8.0.tar.gz and load"
 156                           "it as module or use Linux >= 2.1.45 to be "
 157                           "able to use joysticks.\n");
 158     return joy_cnt;
 159 }
 160
 161 /**************************************************************************
 162  *                              JoyGetDevCaps           [WINMM.27]
 163  */
 164 MMRESULT WINAPI joyGetDevCapsA(UINT wID, LPJOYCAPSA lpCaps,UINT wSize)
 165 {
 166         JOYCAPS16       jc16;
 167         MMRESULT16      ret = joyGetDevCaps16(wID,&jc16,sizeof(jc16));
 168
 169         lpCaps->wMid = jc16.wMid;
 170         lpCaps->wPid = jc16.wPid;
 171         strcpy(lpCaps->szPname,jc16.szPname);
 172         lpCaps->wXmin = jc16.wXmin;
 173         lpCaps->wXmax = jc16.wXmax;
 174         lpCaps->wYmin = jc16.wYmin;
 175         lpCaps->wYmax = jc16.wYmax;
 176         lpCaps->wZmin = jc16.wZmin;
 177         lpCaps->wZmax = jc16.wZmax;
 178         lpCaps->wNumButtons = jc16.wNumButtons;
 179         lpCaps->wPeriodMin = jc16.wPeriodMin;
 180         lpCaps->wPeriodMax = jc16.wPeriodMax;
 181
 182         lpCaps->wRmin = jc16.wRmin;
 183         lpCaps->wRmax = jc16.wRmax;
 184         lpCaps->wUmin = jc16.wUmin;
 185         lpCaps->wUmax = jc16.wUmax;
 186         lpCaps->wVmin = jc16.wVmin;
 187         lpCaps->wVmax = jc16.wVmax;
 188         lpCaps->wCaps = jc16.wCaps;
 189         lpCaps->wMaxAxes = jc16.wMaxAxes;
 190         lpCaps->wNumAxes = jc16.wNumAxes;
 191         lpCaps->wMaxButtons = jc16.wMaxButtons;
 192         strcpy(lpCaps->szRegKey,jc16.szRegKey);
 193         strcpy(lpCaps->szOEMVxD,jc16.szOEMVxD);
 194         return ret;
 195 }
 196
 197 /**************************************************************************
 198  *                              JoyGetDevCaps           [WINMM.28]
 199  */
 200 MMRESULT WINAPI joyGetDevCapsW(UINT wID, LPJOYCAPSW lpCaps,UINT wSize)
 201 {
 202         JOYCAPS16       jc16;
 203         MMRESULT16      ret = joyGetDevCaps16(wID,&jc16,sizeof(jc16));
 204
 205         lpCaps->wMid = jc16.wMid;
 206         lpCaps->wPid = jc16.wPid;
 207         lstrcpyAtoW(lpCaps->szPname,jc16.szPname);
 208         lpCaps->wXmin = jc16.wXmin;
 209         lpCaps->wXmax = jc16.wXmax;
 210         lpCaps->wYmin = jc16.wYmin;
 211         lpCaps->wYmax = jc16.wYmax;
 212         lpCaps->wZmin = jc16.wZmin;
 213         lpCaps->wZmax = jc16.wZmax;
 214         lpCaps->wNumButtons = jc16.wNumButtons;
 215         lpCaps->wPeriodMin = jc16.wPeriodMin;
 216         lpCaps->wPeriodMax = jc16.wPeriodMax;
 217
 218         lpCaps->wRmin = jc16.wRmin;
 219         lpCaps->wRmax = jc16.wRmax;
 220         lpCaps->wUmin = jc16.wUmin;
 221         lpCaps->wUmax = jc16.wUmax;
 222         lpCaps->wVmin = jc16.wVmin;
 223         lpCaps->wVmax = jc16.wVmax;
 224         lpCaps->wCaps = jc16.wCaps;
 225         lpCaps->wMaxAxes = jc16.wMaxAxes;
 226         lpCaps->wNumAxes = jc16.wNumAxes;
 227         lpCaps->wMaxButtons = jc16.wMaxButtons;
 228         lstrcpyAtoW(lpCaps->szRegKey,jc16.szRegKey);
 229         lstrcpyAtoW(lpCaps->szOEMVxD,jc16.szOEMVxD);
 230         return ret;
 231 }
 232 /**************************************************************************
 233  *                              JoyGetDevCaps           [MMSYSTEM.102]
 234  */
 235 MMRESULT16 WINAPI joyGetDevCaps16(UINT16 wID, LPJOYCAPS16 lpCaps, UINT16 wSize)
 236 {
 237     TRACE("(%04X, %p, %d);\n",
 238             wID, lpCaps, wSize);
 239     if (joyOpenDriver(wID) == TRUE) {
 240         lpCaps->wMid = MM_MICROSOFT;
 241         lpCaps->wPid = MM_PC_JOYSTICK;
 242         strcpy(lpCaps->szPname, "WineJoy"); /* joystick product name */
 243         lpCaps->wXmin = 0; /* FIXME */
 244         lpCaps->wXmax = 0xffff;
 245         lpCaps->wYmin = 0;
 246         lpCaps->wYmax = 0xffff;
 247         lpCaps->wZmin = 0;
 248         lpCaps->wZmax = 0xffff;
 249         lpCaps->wNumButtons = 2;
 250         lpCaps->wPeriodMin = 0;
 251         lpCaps->wPeriodMax = 50; /* FIXME end */
 252         if (wSize == sizeof(JOYCAPS16)) {
 253                 /* complete 95 structure */
 254                 lpCaps->wRmin = 0;
 255                 lpCaps->wRmax = 0xffff;
 256                 lpCaps->wUmin = 0;
 257                 lpCaps->wUmax = 0xffff;
 258                 lpCaps->wVmin = 0;
 259                 lpCaps->wVmax = 0xffff;
 260                 lpCaps->wCaps = 0;
 261                 lpCaps->wMaxAxes = 6;
 262                 lpCaps->wNumAxes = 2;
 263                 lpCaps->wMaxButtons = 3;
 264                 strcpy(lpCaps->szRegKey,"");
 265                 strcpy(lpCaps->szOEMVxD,"");
 266         }
 267         joyCloseDriver(wID);
 268         return JOYERR_NOERROR;
 269     }
 270     else
 271     return MMSYSERR_NODRIVER;
 272 }
 273
 274 /**************************************************************************
 275  *                              JoyGetPosEx             [WINMM.31]
 276  */
 277 MMRESULT WINAPI joyGetPosEx(UINT wID, LPJOYINFOEX lpInfo)
 278 {
 279         /* FIXME: implement it */
 280         return MMSYSERR_NODRIVER;
 281 }
 282
 283 /**************************************************************************
 284  *                              JoyGetPosEx             [WINMM.31]
 285  */
 286 MMRESULT16 WINAPI joyGetPosEx16(UINT16 wID, LPJOYINFOEX lpInfo)
 287 {
 288         return joyGetPosEx(wID, lpInfo);
 289 }
 290
 291 /**************************************************************************
 292  *                              JoyGetPos               [WINMM.30]
 293  */
 294 MMRESULT WINAPI joyGetPos(UINT wID, LPJOYINFO lpInfo)
 295 {
 296         JOYINFO16       ji;
 297         MMRESULT16      ret = joyGetPos16(wID,&ji);
 298
 299         lpInfo->wXpos = ji.wXpos;
 300         lpInfo->wYpos = ji.wYpos;
 301         lpInfo->wZpos = ji.wZpos;
 302         lpInfo->wButtons = ji.wButtons;
 303         return ret;
 304 }
 305
 306 /**************************************************************************
 307  *                              JoyGetPos               [MMSYSTEM.103]
 308  */
 309 MMRESULT16 WINAPI joyGetPos16(UINT16 wID, LPJOYINFO16 lpInfo)
 310 {
 311         struct js_status js;
 312
 313         TRACE("(%04X, %p)\n", wID, lpInfo);
 314         if (joyOpenDriver(wID) == FALSE) return MMSYSERR_NODRIVER;
 315         dev_stat = read(joy_dev[wID], &js, sizeof(js));
 316         if (dev_stat != sizeof(js)) {
 317                 joyCloseDriver(wID);
 318                 return JOYERR_UNPLUGGED; /* FIXME: perhaps wrong, but what should I return else ? */
 319         }
 320         count_use[wID] = 0;
 321         js.x = js.x*37;
 322         js.y = js.y*37;
 323         lpInfo->wXpos = js.x;   /* FIXME: perhaps multiply it somehow ? */
 324         lpInfo->wYpos = js.y;
 325         lpInfo->wZpos = 0; /* FIXME: Don't know what to do with this value as joystick driver doesn't provide a Z value */
 326         lpInfo->wButtons = js.buttons;
 327         TRACE("x: %d, y: %d, buttons: %d\n", js.x, js.y, js.buttons);
 328         return JOYERR_NOERROR;
 329 }
 330
 331 /**************************************************************************
 332  *                              JoyGetThreshold         [WINMM.32]
 333  */
 334 MMRESULT WINAPI joyGetThreshold(UINT wID, LPUINT lpThreshold)
 335 {
 336         UINT16          thresh;
 337         MMRESULT16      ret = joyGetThreshold16(wID,&thresh);
 338
 339         *lpThreshold = thresh;
 340         return ret;
 341 }
 342
 343 /**************************************************************************
 344  *                              JoyGetThreshold         [MMSYSTEM.104]
 345  */
 346 MMRESULT16 WINAPI joyGetThreshold16(UINT16 wID, LPUINT16 lpThreshold)
 347 {
 348     TRACE("(%04X, %p);\n", wID, lpThreshold);
 349     if (wID >= MAXJOYDRIVERS) return JOYERR_PARMS;
 350     *lpThreshold = joy_threshold[wID];
 351     return JOYERR_NOERROR;
 352 }
 353
 354 /**************************************************************************
 355  *                              JoyReleaseCapture       [WINMM.33]
 356  */
 357 MMRESULT WINAPI joyReleaseCapture(UINT wID)
 358 {
 359         return joyReleaseCapture16(wID);
 360 }
 361
 362 /**************************************************************************
 363  *                              JoyReleaseCapture       [MMSYSTEM.105]
 364  */
 365 MMRESULT16 WINAPI joyReleaseCapture16(UINT16 wID)
 366 {
 367     TRACE("(%04X);\n", wID);
 368     joyCaptured = FALSE;
 369     joyCloseDriver(wID);
 370     joy_dev[wID] = -1;
 371     CaptureWnd[wID] = 0;
 372     return JOYERR_NOERROR;
 373 }
 374
 375 /**************************************************************************
 376  *                              JoySetCapture           [MMSYSTEM.106]
 377  */
 378 MMRESULT WINAPI joySetCapture(HWND hWnd,UINT wID,UINT wPeriod,BOOL bChanged)
 379 {
 380         return joySetCapture16(hWnd,wID,wPeriod,bChanged);
 381 }
 382
 383 /**************************************************************************
 384  *                              JoySetCapture           [MMSYSTEM.106]
 385  */
 386 MMRESULT16 WINAPI joySetCapture16(HWND16 hWnd,UINT16 wID,UINT16 wPeriod,BOOL16 bChanged)
 387 {
 388
 389     TRACE("(%04X, %04X, %d, %d);\n",
 390             hWnd, wID, wPeriod, bChanged);
 391
 392     if (!CaptureWnd[wID]) {
 393         if (joyOpenDriver(wID) == FALSE) return MMSYSERR_NODRIVER;
 394         joyCaptured = TRUE;
 395         CaptureWnd[wID] = hWnd;
 396         return JOYERR_NOERROR;
 397     }
 398     else
 399     return JOYERR_NOCANDO; /* FIXME: what should be returned ? */
 400 }
 401
 402 /**************************************************************************
 403  *                              JoySetThreshold         [WINMM.35]
 404  */
 405 MMRESULT WINAPI joySetThreshold(UINT wID, UINT wThreshold)
 406 {
 407         return joySetThreshold16(wID,wThreshold);
 408 }
 409 /**************************************************************************
 410  *                              JoySetThreshold         [MMSYSTEM.107]
 411  */
 412 MMRESULT16 WINAPI joySetThreshold16(UINT16 wID, UINT16 wThreshold)
 413 {
 414     TRACE("(%04X, %d);\n", wID, wThreshold);
 415
 416     if (wID > 3) return JOYERR_PARMS;
 417     joy_threshold[wID] = wThreshold;
 418     return JOYERR_NOERROR;
 419 }
 420
 421 /**************************************************************************
 422  *                              JoySetCalibration       [MMSYSTEM.109]
 423  */
 424 MMRESULT16 WINAPI joySetCalibration16(UINT16 wID)
 425 {
 426     FIXME("(%04X): stub.\n", wID);
 427     return JOYERR_NOCANDO;
 428 }