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