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 <stdio.h>
  18 #include <stdlib.h>
  19 #include <string.h>
  20 #include <fcntl.h>
  21 #include <sys/ioctl.h>
  22 #include <sys/errno.h>
  23 #include "windows.h"
  24 #include "ldt.h"
  25 #include "user.h"
  26 #include "driver.h"
  27 #include "mmsystem.h"
  28 #include "debug.h"
  29
  30 #define MAXJOYDRIVERS   4
  31
  32 static int count_use[MAXJOYDRIVERS] = {0, 0, 0, 0};
  33 static int dev_stat;
  34 static int joy_nr_open = 0;
  35 static BOOL16 joyCaptured = FALSE;
  36 static HWND16 CaptureWnd[MAXJOYDRIVERS] = {0, 0};
  37 static int joy_dev[MAXJOYDRIVERS] = {-1, -1,-1,-1};
  38 static JOYINFO16 joyCapData[MAXJOYDRIVERS];
  39 static unsigned int joy_threshold[MAXJOYDRIVERS] = {0, 0, 0, 0};
  40
  41 struct js_status
  42 {
  43     int buttons;
  44     int x;
  45     int y;
  46 };
  47
  48
  49 /**************************************************************************
  50  *                              joyOpenDriver           [internal]
  51  */
  52 BOOL16 joyOpenDriver(WORD wID)
  53 {
  54         char dev_name[] = "/dev/js%d";
  55         char    buf[20];
  56
  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         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         if (joyCaptured == FALSE) return;
  97
  98         TRACE(mmsys, " --\n");
  99
 100         for (joy=0; joy < MAXJOYDRIVERS; joy++) {
 101                 if (joyOpenDriver(joy) == FALSE) continue;
 102                 dev_stat = read(joy_dev[joy], &js, sizeof(js));
 103                 if (dev_stat == sizeof(js)) {
 104                         js.x = js.x*37;
 105                         js.y = js.y*37;
 106                         if ((joyCapData[joy].wXpos != js.x) || (joyCapData[joy].wYpos != js.y)) {
 107                                 SendMessage32A(CaptureWnd[joy], MM_JOY1MOVE + joy, js.buttons, MAKELONG(js.x, js.y));
 108                                 joyCapData[joy].wXpos = js.x;
 109                                 joyCapData[joy].wYpos = js.y;
 110                         }
 111                         if (joyCapData[joy].wButtons != js.buttons) {
 112                                 unsigned int ButtonChanged = (WORD)(joyCapData[joy].wButtons ^ js.buttons)<<8;
 113                                 if (joyCapData[joy].wButtons < js.buttons)
 114                                 SendMessage32A(CaptureWnd[joy], MM_JOY1BUTTONDOWN + joy, ButtonChanged, MAKELONG(js.x, js.y));
 115                                 else
 116                                 if (joyCapData[joy].wButtons > js.buttons)
 117                                 SendMessage32A(CaptureWnd[joy], MM_JOY1BUTTONUP
 118 + joy, ButtonChanged, MAKELONG(js.x, js.y));
 119                                 joyCapData[joy].wButtons = js.buttons;
 120                         }
 121                 }
 122         }
 123 }
 124
 125
 126 /**************************************************************************
 127  *                              JoyGetNumDevs           [MMSYSTEM.101]
 128  */
 129 UINT32 WINAPI joyGetNumDevs32(void)
 130 {
 131         return joyGetNumDevs16();
 132 }
 133
 134 /**************************************************************************
 135  *                              JoyGetNumDevs           [MMSYSTEM.101]
 136  */
 137 UINT16 WINAPI joyGetNumDevs16(void)
 138 {
 139     int joy;
 140     UINT16 joy_cnt = 0;
 141
 142     for (joy=0; joy<MAXJOYDRIVERS; joy++)
 143         if (joyOpenDriver(joy) == TRUE) {
 144                 joyCloseDriver(joy);
 145                 joy_cnt++;
 146     }
 147     TRACE(mmsys, "returning %d\n", joy_cnt);
 148     if (!joy_cnt) ERR(mmsys, "No joystick found - "
 149                           "perhaps get joystick-0.8.0.tar.gz and load"
 150                           "it as module or use Linux >= 2.1.45 to be "
 151                           "able to use joysticks.\n");
 152     return joy_cnt;
 153 }
 154
 155 /**************************************************************************
 156  *                              JoyGetDevCaps           [WINMM.27]
 157  */
 158 MMRESULT32 WINAPI joyGetDevCaps32A(UINT32 wID, LPJOYCAPS32A lpCaps,UINT32 wSize)
 159 {
 160         JOYCAPS16       jc16;
 161         MMRESULT16      ret = joyGetDevCaps16(wID,&jc16,sizeof(jc16));
 162
 163         lpCaps->wMid = jc16.wMid;
 164         lpCaps->wPid = jc16.wPid;
 165         lstrcpy32A(lpCaps->szPname,jc16.szPname);
 166         lpCaps->wXmin = jc16.wXmin;
 167         lpCaps->wXmax = jc16.wXmax;
 168         lpCaps->wYmin = jc16.wYmin;
 169         lpCaps->wYmax = jc16.wYmax;
 170         lpCaps->wZmin = jc16.wZmin;
 171         lpCaps->wZmax = jc16.wZmax;
 172         lpCaps->wNumButtons = jc16.wNumButtons;
 173         lpCaps->wPeriodMin = jc16.wPeriodMin;
 174         lpCaps->wPeriodMax = jc16.wPeriodMax;
 175
 176         lpCaps->wRmin = jc16.wRmin;
 177         lpCaps->wRmax = jc16.wRmax;
 178         lpCaps->wUmin = jc16.wUmin;
 179         lpCaps->wUmax = jc16.wUmax;
 180         lpCaps->wVmin = jc16.wVmin;
 181         lpCaps->wVmax = jc16.wVmax;
 182         lpCaps->wCaps = jc16.wCaps;
 183         lpCaps->wMaxAxes = jc16.wMaxAxes;
 184         lpCaps->wNumAxes = jc16.wNumAxes;
 185         lpCaps->wMaxButtons = jc16.wMaxButtons;
 186         lstrcpy32A(lpCaps->szRegKey,jc16.szRegKey);
 187         lstrcpy32A(lpCaps->szOEMVxD,jc16.szOEMVxD);
 188         return ret;
 189 }
 190
 191 /**************************************************************************
 192  *                              JoyGetDevCaps           [WINMM.28]
 193  */
 194 MMRESULT32 WINAPI joyGetDevCaps32W(UINT32 wID, LPJOYCAPS32W lpCaps,UINT32 wSize)
 195 {
 196         JOYCAPS16       jc16;
 197         MMRESULT16      ret = joyGetDevCaps16(wID,&jc16,sizeof(jc16));
 198
 199         lpCaps->wMid = jc16.wMid;
 200         lpCaps->wPid = jc16.wPid;
 201         lstrcpyAtoW(lpCaps->szPname,jc16.szPname);
 202         lpCaps->wXmin = jc16.wXmin;
 203         lpCaps->wXmax = jc16.wXmax;
 204         lpCaps->wYmin = jc16.wYmin;
 205         lpCaps->wYmax = jc16.wYmax;
 206         lpCaps->wZmin = jc16.wZmin;
 207         lpCaps->wZmax = jc16.wZmax;
 208         lpCaps->wNumButtons = jc16.wNumButtons;
 209         lpCaps->wPeriodMin = jc16.wPeriodMin;
 210         lpCaps->wPeriodMax = jc16.wPeriodMax;
 211
 212         lpCaps->wRmin = jc16.wRmin;
 213         lpCaps->wRmax = jc16.wRmax;
 214         lpCaps->wUmin = jc16.wUmin;
 215         lpCaps->wUmax = jc16.wUmax;
 216         lpCaps->wVmin = jc16.wVmin;
 217         lpCaps->wVmax = jc16.wVmax;
 218         lpCaps->wCaps = jc16.wCaps;
 219         lpCaps->wMaxAxes = jc16.wMaxAxes;
 220         lpCaps->wNumAxes = jc16.wNumAxes;
 221         lpCaps->wMaxButtons = jc16.wMaxButtons;
 222         lstrcpyAtoW(lpCaps->szRegKey,jc16.szRegKey);
 223         lstrcpyAtoW(lpCaps->szOEMVxD,jc16.szOEMVxD);
 224         return ret;
 225 }
 226 /**************************************************************************
 227  *                              JoyGetDevCaps           [MMSYSTEM.102]
 228  */
 229 MMRESULT16 WINAPI joyGetDevCaps16(UINT16 wID, LPJOYCAPS16 lpCaps, UINT16 wSize)
 230 {
 231     TRACE(mmsys, "(%04X, %p, %d);\n",
 232             wID, lpCaps, wSize);
 233     if (joyOpenDriver(wID) == TRUE) {
 234         lpCaps->wMid = MM_MICROSOFT;
 235         lpCaps->wPid = MM_PC_JOYSTICK;
 236         strcpy(lpCaps->szPname, "WineJoy"); /* joystick product name */
 237         lpCaps->wXmin = 0; /* FIXME */
 238         lpCaps->wXmax = 0xffff;
 239         lpCaps->wYmin = 0;
 240         lpCaps->wYmax = 0xffff;
 241         lpCaps->wZmin = 0;
 242         lpCaps->wZmax = 0xffff;
 243         lpCaps->wNumButtons = 2;
 244         lpCaps->wPeriodMin = 0;
 245         lpCaps->wPeriodMax = 50; /* FIXME end */
 246         if (wSize == sizeof(JOYCAPS16)) {
 247                 /* complete 95 structure */
 248                 lpCaps->wRmin = 0;
 249                 lpCaps->wRmax = 0xffff;
 250                 lpCaps->wUmin = 0;
 251                 lpCaps->wUmax = 0xffff;
 252                 lpCaps->wVmin = 0;
 253                 lpCaps->wVmax = 0xffff;
 254                 lpCaps->wCaps = 0;
 255                 lpCaps->wMaxAxes = 6;
 256                 lpCaps->wNumAxes = 2;
 257                 lpCaps->wMaxButtons = 3;
 258                 strcpy(lpCaps->szRegKey,"");
 259                 strcpy(lpCaps->szOEMVxD,"");
 260         }
 261         joyCloseDriver(wID);
 262         return JOYERR_NOERROR;
 263     }
 264     else
 265     return MMSYSERR_NODRIVER;
 266 }
 267
 268 /**************************************************************************
 269  *                              JoyGetPosEx             [WINMM.31]
 270  */
 271 MMRESULT32 WINAPI joyGetPosEx(UINT32 wID, LPJOYINFOEX lpInfo)
 272 {
 273         /* FIXME: implement it */
 274         return MMSYSERR_NODRIVER;
 275 }
 276
 277 /**************************************************************************
 278  *                              JoyGetPos               [WINMM.30]
 279  */
 280 MMRESULT32 WINAPI joyGetPos32(UINT32 wID, LPJOYINFO32 lpInfo)
 281 {
 282         JOYINFO16       ji;
 283         MMRESULT16      ret = joyGetPos16(wID,&ji);
 284
 285         lpInfo->wXpos = ji.wXpos;
 286         lpInfo->wYpos = ji.wYpos;
 287         lpInfo->wZpos = ji.wZpos;
 288         lpInfo->wButtons = ji.wButtons;
 289         return ret;
 290 }
 291
 292 /**************************************************************************
 293  *                              JoyGetPos               [MMSYSTEM.103]
 294  */
 295 MMRESULT16 WINAPI joyGetPos16(UINT16 wID, LPJOYINFO16 lpInfo)
 296 {
 297         struct js_status js;
 298
 299         TRACE(mmsys, "(%04X, %p)\n", wID, lpInfo);
 300         if (joyOpenDriver(wID) == FALSE) return MMSYSERR_NODRIVER;
 301         dev_stat = read(joy_dev[wID], &js, sizeof(js));
 302         if (dev_stat != sizeof(js)) {
 303                 joyCloseDriver(wID);
 304                 return JOYERR_UNPLUGGED; /* FIXME: perhaps wrong, but what should I return else ? */
 305         }
 306         count_use[wID] = 0;
 307         js.x = js.x*37;
 308         js.y = js.y*37;
 309         lpInfo->wXpos = js.x;   /* FIXME: perhaps multiply it somehow ? */
 310         lpInfo->wYpos = js.y;
 311         lpInfo->wZpos = 0; /* FIXME: Don't know what to do with this value as joystick driver doesn't provide a Z value */
 312         lpInfo->wButtons = js.buttons;
 313         TRACE(mmsys, "x: %d, y: %d, buttons: %d\n", js.x, js.y, js.buttons);
 314         return JOYERR_NOERROR;
 315 }
 316
 317 /**************************************************************************
 318  *                              JoyGetThreshold         [WINMM.32]
 319  */
 320 MMRESULT32 WINAPI joyGetThreshold32(UINT32 wID, LPUINT32 lpThreshold)
 321 {
 322         UINT16          thresh;
 323         MMRESULT16      ret = joyGetThreshold16(wID,&thresh);
 324
 325         *lpThreshold = thresh;
 326         return ret;
 327 }
 328
 329 /**************************************************************************
 330  *                              JoyGetThreshold         [MMSYSTEM.104]
 331  */
 332 MMRESULT16 WINAPI joyGetThreshold16(UINT16 wID, LPUINT16 lpThreshold)
 333 {
 334     TRACE(mmsys, "(%04X, %p);\n", wID, lpThreshold);
 335     if (wID >= MAXJOYDRIVERS) return JOYERR_PARMS;
 336     *lpThreshold = joy_threshold[wID];
 337     return JOYERR_NOERROR;
 338 }
 339
 340 /**************************************************************************
 341  *                              JoyReleaseCapture       [WINMM.33]
 342  */
 343 MMRESULT32 WINAPI joyReleaseCapture32(UINT32 wID)
 344 {
 345         return joyReleaseCapture16(wID);
 346 }
 347
 348 /**************************************************************************
 349  *                              JoyReleaseCapture       [MMSYSTEM.105]
 350  */
 351 MMRESULT16 WINAPI joyReleaseCapture16(UINT16 wID)
 352 {
 353     TRACE(mmsys, "(%04X);\n", wID);
 354     joyCaptured = FALSE;
 355     joyCloseDriver(wID);
 356     joy_dev[wID] = -1;
 357     CaptureWnd[wID] = 0;
 358     return JOYERR_NOERROR;
 359 }
 360
 361 /**************************************************************************
 362  *                              JoySetCapture           [MMSYSTEM.106]
 363  */
 364 MMRESULT32 WINAPI joySetCapture32(HWND32 hWnd,UINT32 wID,UINT32 wPeriod,BOOL32 bChanged)
 365 {
 366         return joySetCapture16(hWnd,wID,wPeriod,bChanged);
 367 }
 368
 369 /**************************************************************************
 370  *                              JoySetCapture           [MMSYSTEM.106]
 371  */
 372 MMRESULT16 WINAPI joySetCapture16(HWND16 hWnd,UINT16 wID,UINT16 wPeriod,BOOL16 bChanged)
 373 {
 374
 375     TRACE(mmsys, "(%04X, %04X, %d, %d);\n",
 376             hWnd, wID, wPeriod, bChanged);
 377
 378     if (!CaptureWnd[wID]) {
 379         if (joyOpenDriver(wID) == FALSE) return MMSYSERR_NODRIVER;
 380         joyCaptured = TRUE;
 381         CaptureWnd[wID] = hWnd;
 382         return JOYERR_NOERROR;
 383     }
 384     else
 385     return JOYERR_NOCANDO; /* FIXME: what should be returned ? */
 386 }
 387
 388 /**************************************************************************
 389  *                              JoySetThreshold         [WINMM.35]
 390  */
 391 MMRESULT32 WINAPI joySetThreshold32(UINT32 wID, UINT32 wThreshold)
 392 {
 393         return joySetThreshold16(wID,wThreshold);
 394 }
 395 /**************************************************************************
 396  *                              JoySetThreshold         [MMSYSTEM.107]
 397  */
 398 MMRESULT16 WINAPI joySetThreshold16(UINT16 wID, UINT16 wThreshold)
 399 {
 400     TRACE(mmsys, "(%04X, %d);\n", wID, wThreshold);
 401
 402     if (wID > 3) return JOYERR_PARMS;
 403     joy_threshold[wID] = wThreshold;
 404     return JOYERR_NOERROR;
 405 }
 406
 407 /**************************************************************************
 408  *                              JoySetCalibration       [MMSYSTEM.109]
 409  */
 410 MMRESULT16 WINAPI joySetCalibration16(UINT16 wID)
 411 {
 412     FIXME(mmsys, "(%04X): stub.\n", wID);
 413     return JOYERR_NOCANDO;
 414 }