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