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