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