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wine/dlls/winejoystick.drv/joystick.c

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/*
* joystick functions
*
* Copyright 1997 Andreas Mohr
* Copyright 2000 Wolfgang Schwotzer
* Copyright 2002 David Hagood
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*
* NOTES:
*
* - nearly all joystick functions can be regarded as obsolete,
* as Linux (2.1.x) now supports extended joysticks with a completely
* new joystick driver interface
* New driver's documentation says:
* "For backward compatibility the old interface is still included,
* but will be dropped in the future."
* Thus we should implement the new interface and at most keep the old
* routines for backward compatibility.
* - better support of enhanced joysticks (Linux 2.2 interface is available)
* - support more joystick drivers (like the XInput extension)
* - should load joystick DLL as any other driver (instead of hardcoding)
* the driver's name, and load it as any low lever driver.
*/
#include "config.h"
#include "wine/port.h"
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#ifdef HAVE_SYS_IOCTL_H
#include <sys/ioctl.h>
#endif
#ifdef HAVE_LINUX_IOCTL_H
#include <linux/ioctl.h>
#endif
#ifdef HAVE_LINUX_JOYSTICK_H
#include <linux/joystick.h>
#ifdef SW_MAX
#undef SW_MAX
#endif
#define JOYDEV_NEW "/dev/input/js%d"
#define JOYDEV_OLD "/dev/js%d"
#endif
#include <errno.h>
#include "windef.h"
#include "winbase.h"
#include "wingdi.h"
#include "winuser.h"
#include "winnls.h"
#include "mmddk.h"
#include "wine/debug.h"
#include "wine/unicode.h"
WINE_DEFAULT_DEBUG_CHANNEL(joystick);
#define MAXJOYSTICK (JOYSTICKID2 + 30)
typedef struct tagWINE_JSTCK {
int joyIntf;
int in_use;
/* Some extra info we need to make this actually work under the
Linux 2.2 event api.
First of all, we cannot keep closing and reopening the device file -
that blows away the state of the stick device, and we lose events. So, we
need to open the low-level device once, and close it when we are done.
Secondly, the event API only gives us what's changed. However, Windows apps
want the whole state every time, so we have to cache the data.
*/
int dev; /* Linux level device file descriptor */
int x;
int y;
int z;
int r;
int u;
int v;
int pov_x;
int pov_y;
int buttons;
char axesMap[ABS_MAX + 1];
} WINE_JSTCK;
static WINE_JSTCK JSTCK_Data[MAXJOYSTICK];
/**************************************************************************
* JSTCK_drvGet [internal]
*/
static WINE_JSTCK *JSTCK_drvGet(DWORD_PTR dwDevID)
{
int p;
if ((dwDevID - (DWORD_PTR)JSTCK_Data) % sizeof(JSTCK_Data[0]) != 0)
return NULL;
p = (dwDevID - (DWORD_PTR)JSTCK_Data) / sizeof(JSTCK_Data[0]);
if (p < 0 || p >= MAXJOYSTICK || !((WINE_JSTCK*)dwDevID)->in_use)
return NULL;
return (WINE_JSTCK*)dwDevID;
}
/**************************************************************************
* JSTCK_drvOpen [internal]
*/
static LRESULT JSTCK_drvOpen(LPSTR str, DWORD dwIntf)
{
if (dwIntf >= MAXJOYSTICK || JSTCK_Data[dwIntf].in_use)
return 0;
JSTCK_Data[dwIntf].joyIntf = dwIntf;
JSTCK_Data[dwIntf].in_use = 1;
return (LRESULT)&JSTCK_Data[dwIntf];
}
/**************************************************************************
* JSTCK_drvClose [internal]
*/
static LRESULT JSTCK_drvClose(DWORD_PTR dwDevID)
{
WINE_JSTCK* jstck = JSTCK_drvGet(dwDevID);
if (jstck == NULL)
return 0;
jstck->in_use = 0;
if (jstck->dev > 0)
{
close(jstck->dev);
jstck->dev = 0;
}
return 1;
}
struct js_status
{
int buttons;
int x;
int y;
};
/**************************************************************************
* JSTCK_OpenDevice [internal]
*/
static int JSTCK_OpenDevice(WINE_JSTCK* jstick)
{
char buf[20];
int flags;
if (jstick->dev > 0)
return jstick->dev;
sprintf(buf, JOYDEV_NEW, jstick->joyIntf);
#ifdef HAVE_LINUX_22_JOYSTICK_API
flags = O_RDONLY | O_NONBLOCK;
#else
flags = O_RDONLY;
#endif
if ((jstick->dev = open(buf, flags)) < 0) {
sprintf(buf, JOYDEV_OLD, jstick->joyIntf);
if ((jstick->dev = open(buf, flags)) < 0)
return jstick->dev;
}
#ifdef HAVE_LINUX_22_JOYSTICK_API
ioctl(jstick->dev, JSIOCGAXMAP, jstick->axesMap);
#endif
return jstick->dev;
}
/**************************************************************************
* JoyGetDevCaps [MMSYSTEM.102]
*/
static LRESULT JSTCK_GetDevCaps(DWORD_PTR dwDevID, LPJOYCAPSW lpCaps, DWORD dwSize)
{
WINE_JSTCK* jstck;
#ifdef HAVE_LINUX_22_JOYSTICK_API
int dev;
char nrOfAxes;
char nrOfButtons;
char identString[MAXPNAMELEN];
int i;
int driverVersion;
#else
static const WCHAR ini[] = {'W','i','n','e',' ','J','o','y','s','t','i','c','k',' ','D','r','i','v','e','r',0};
#endif
if ((jstck = JSTCK_drvGet(dwDevID)) == NULL)
return MMSYSERR_NODRIVER;
#ifdef HAVE_LINUX_22_JOYSTICK_API
if ((dev = JSTCK_OpenDevice(jstck)) < 0) return JOYERR_PARMS;
ioctl(dev, JSIOCGAXES, &nrOfAxes);
ioctl(dev, JSIOCGBUTTONS, &nrOfButtons);
ioctl(dev, JSIOCGVERSION, &driverVersion);
ioctl(dev, JSIOCGNAME(sizeof(identString)), identString);
TRACE("Driver: 0x%06x, Name: %s, #Axes: %d, #Buttons: %d\n",
driverVersion, identString, nrOfAxes, nrOfButtons);
lpCaps->wMid = MM_MICROSOFT;
lpCaps->wPid = MM_PC_JOYSTICK;
MultiByteToWideChar(CP_UNIXCP, 0, identString, -1, lpCaps->szPname, MAXPNAMELEN);
lpCaps->szPname[MAXPNAMELEN-1] = '\0';
lpCaps->wXmin = 0;
lpCaps->wXmax = 0xFFFF;
lpCaps->wYmin = 0;
lpCaps->wYmax = 0xFFFF;
lpCaps->wZmin = 0;
lpCaps->wZmax = (nrOfAxes >= 3) ? 0xFFFF : 0;
#ifdef BODGE_THE_HAT
/* Half-Life won't allow you to map an axis event to things like
"next weapon" and "use". Linux reports the hat on my stick as
axis U and V. So, IFF BODGE_THE_HAT is defined, lie through our
teeth and say we have 32 buttons, and we will map the axes to
the high buttons. Really, perhaps this should be a registry entry,
or even a parameter to the Linux joystick driver (which would completely
remove the need for this.)
*/
lpCaps->wNumButtons = 32;
#else
lpCaps->wNumButtons = nrOfButtons;
#endif
if (dwSize == sizeof(JOYCAPSW)) {
/* complete 95 structure */
lpCaps->wRmin = 0;
lpCaps->wRmax = 0xFFFF;
lpCaps->wUmin = 0;
lpCaps->wUmax = 0xFFFF;
lpCaps->wVmin = 0;
lpCaps->wVmax = 0xFFFF;
lpCaps->wMaxAxes = 6; /* same as MS Joystick Driver */
lpCaps->wNumAxes = 0; /* nr of axes in use */
lpCaps->wMaxButtons = 32; /* same as MS Joystick Driver */
lpCaps->szRegKey[0] = 0;
lpCaps->szOEMVxD[0] = 0;
lpCaps->wCaps = 0;
for (i = 0; i < nrOfAxes; i++) {
switch (jstck->axesMap[i]) {
case 0: /* X */
case 1: /* Y */
lpCaps->wNumAxes++;
break;
case 2: /* Z */
case 6: /* Throttle */
lpCaps->wNumAxes++;
lpCaps->wCaps |= JOYCAPS_HASZ;
break;
case 5: /* Rz */
case 7: /* Rudder */
lpCaps->wNumAxes++;
lpCaps->wCaps |= JOYCAPS_HASR;
break;
case 3: /* Rx */
lpCaps->wNumAxes++;
lpCaps->wCaps |= JOYCAPS_HASU;
break;
case 4: /* Ry */
lpCaps->wNumAxes++;
lpCaps->wCaps |= JOYCAPS_HASV;
break;
case 16: /* Hat 0 X */
case 17: /* Hat 0 Y */
lpCaps->wCaps |= JOYCAPS_HASPOV | JOYCAPS_POV4DIR;
/* TODO: JOYCAPS_POVCTS handling */
break;
default:
WARN("Unknown axis %hhu(%u). Skipped.\n", jstck->axesMap[i], i);
}
}
}
#else
lpCaps->wMid = MM_MICROSOFT;
lpCaps->wPid = MM_PC_JOYSTICK;
strcpyW(lpCaps->szPname, ini); /* joystick product name */
lpCaps->wXmin = 0;
lpCaps->wXmax = 0xFFFF;
lpCaps->wYmin = 0;
lpCaps->wYmax = 0xFFFF;
lpCaps->wZmin = 0;
lpCaps->wZmax = 0;
lpCaps->wNumButtons = 2;
if (dwSize == sizeof(JOYCAPSW)) {
/* complete 95 structure */
lpCaps->wRmin = 0;
lpCaps->wRmax = 0;
lpCaps->wUmin = 0;
lpCaps->wUmax = 0;
lpCaps->wVmin = 0;
lpCaps->wVmax = 0;
lpCaps->wCaps = 0;
lpCaps->wMaxAxes = 2;
lpCaps->wNumAxes = 2;
lpCaps->wMaxButtons = 4;
lpCaps->szRegKey[0] = 0;
lpCaps->szOEMVxD[0] = 0;
}
#endif
return JOYERR_NOERROR;
}
/**************************************************************************
* JSTCK_GetPos [internal]
*/
static LRESULT JSTCK_GetPosEx(DWORD_PTR dwDevID, LPJOYINFOEX lpInfo)
{
WINE_JSTCK* jstck;
int dev;
#ifdef HAVE_LINUX_22_JOYSTICK_API
struct js_event ev;
#else
struct js_status js;
int dev_stat;
#endif
if ((jstck = JSTCK_drvGet(dwDevID)) == NULL)
return MMSYSERR_NODRIVER;
if ((dev = JSTCK_OpenDevice(jstck)) < 0) return JOYERR_PARMS;
#ifdef HAVE_LINUX_22_JOYSTICK_API
while ((read(dev, &ev, sizeof(struct js_event))) > 0) {
if (ev.type == (JS_EVENT_AXIS)) {
switch (jstck->axesMap[ev.number]) {
case 0: /* X */
jstck->x = ev.value;
break;
case 1: /* Y */
jstck->y = ev.value;
break;
case 2: /* Z */
case 6: /* Throttle */
jstck->z = ev.value;
break;
case 5: /* Rz */
case 7: /* Rudder */
jstck->r = ev.value;
break;
case 3: /* Rx */
jstck->u = ev.value;
break;
case 4: /* Ry */
jstck->v = ev.value;
break;
case 16: /* Hat 0 X */
jstck->pov_x = ev.value;
break;
case 17: /* Hat 0 Y */
jstck->pov_y = ev.value;
break;
default:
FIXME("Unknown joystick event '%d'\n", ev.number);
}
} else if (ev.type == (JS_EVENT_BUTTON)) {
if (ev.value) {
jstck->buttons |= (1 << ev.number);
/* FIXME: what to do for this field when
* multiple buttons are depressed ?
*/
if (lpInfo->dwFlags & JOY_RETURNBUTTONS)
lpInfo->dwButtonNumber = ev.number + 1;
}
else
jstck->buttons &= ~(1 << ev.number);
}
}
/* EAGAIN is returned when the queue is empty */
if (errno != EAGAIN) {
/* FIXME: error should not be ignored */
ERR("Error while reading joystick state (%s)\n", strerror(errno));
}
/* Now, copy the cached values into Window's structure... */
if (lpInfo->dwFlags & JOY_RETURNBUTTONS)
lpInfo->dwButtons = jstck->buttons;
if (lpInfo->dwFlags & JOY_RETURNX)
lpInfo->dwXpos = jstck->x + 32767;
if (lpInfo->dwFlags & JOY_RETURNY)
lpInfo->dwYpos = jstck->y + 32767;
if (lpInfo->dwFlags & JOY_RETURNZ)
lpInfo->dwZpos = jstck->z + 32767;
if (lpInfo->dwFlags & JOY_RETURNR)
lpInfo->dwRpos = jstck->r + 32767;
# ifdef BODGE_THE_HAT
else if (lpInfo->dwFlags & JOY_RETURNBUTTONS)
{
if (jstck->r > 0)
lpInfo->dwButtons |= 1<<7;
else if (jstck->r < 0)
lpInfo->dwButtons |= 1<<8;
}
# endif
if (lpInfo->dwFlags & JOY_RETURNU)
lpInfo->dwUpos = jstck->u + 32767;
# ifdef BODGE_THE_HAT
else if (lpInfo->dwFlags & JOY_RETURNBUTTONS)
{
if (jstck->u > 0)
lpInfo->dwButtons |= 1<<9;
else if (jstck->u < 0)
lpInfo->dwButtons |= 1<<10;
}
# endif
if (lpInfo->dwFlags & JOY_RETURNV)
lpInfo->dwVpos = jstck->v + 32767;
if (lpInfo->dwFlags & JOY_RETURNPOV) {
if (jstck->pov_y > 0) {
if (jstck->pov_x < 0)
lpInfo->dwPOV = 22500; /* SW */
else if (jstck->pov_x > 0)
lpInfo->dwPOV = 13500; /* SE */
else
lpInfo->dwPOV = 18000; /* S, JOY_POVBACKWARD */
} else if (jstck->pov_y < 0) {
if (jstck->pov_x < 0)
lpInfo->dwPOV = 31500; /* NW */
else if (jstck->pov_x > 0)
lpInfo->dwPOV = 4500; /* NE */
else
lpInfo->dwPOV = 0; /* N, JOY_POVFORWARD */
} else if (jstck->pov_x < 0)
lpInfo->dwPOV = 27000; /* W, JOY_POVLEFT */
else if (jstck->pov_x > 0)
lpInfo->dwPOV = 9000; /* E, JOY_POVRIGHT */
else
lpInfo->dwPOV = JOY_POVCENTERED; /* Center */
}
#else
dev_stat = read(dev, &js, sizeof(js));
if (dev_stat != sizeof(js)) {
return JOYERR_UNPLUGGED; /* FIXME: perhaps wrong, but what should I return else ? */
}
js.x = js.x<<8;
js.y = js.y<<8;
if (lpInfo->dwFlags & JOY_RETURNX)
lpInfo->dwXpos = js.x; /* FIXME: perhaps multiply it somehow ? */
if (lpInfo->dwFlags & JOY_RETURNY)
lpInfo->dwYpos = js.y;
if (lpInfo->dwFlags & JOY_RETURNBUTTONS)
lpInfo->dwButtons = js.buttons;
#endif
TRACE("x: %d, y: %d, z: %d, r: %d, u: %d, v: %d, buttons: 0x%04x, flags: 0x%04x (fd %d)\n",
lpInfo->dwXpos, lpInfo->dwYpos, lpInfo->dwZpos,
lpInfo->dwRpos, lpInfo->dwUpos, lpInfo->dwVpos,
lpInfo->dwButtons, lpInfo->dwFlags, dev
);
return JOYERR_NOERROR;
}
/**************************************************************************
* JSTCK_GetPos [internal]
*/
static LRESULT JSTCK_GetPos(DWORD_PTR dwDevID, LPJOYINFO lpInfo)
{
JOYINFOEX ji;
LONG ret;
memset(&ji, 0, sizeof(ji));
ji.dwSize = sizeof(ji);
ji.dwFlags = JOY_RETURNX | JOY_RETURNY | JOY_RETURNZ | JOY_RETURNBUTTONS;
ret = JSTCK_GetPosEx(dwDevID, &ji);
if (ret == JOYERR_NOERROR) {
lpInfo->wXpos = ji.dwXpos;
lpInfo->wYpos = ji.dwYpos;
lpInfo->wZpos = ji.dwZpos;
lpInfo->wButtons = ji.dwButtons;
}
return ret;
}
/**************************************************************************
* DriverProc (JOYSTICK.@)
*/
LRESULT CALLBACK JSTCK_DriverProc(DWORD_PTR dwDevID, HDRVR hDriv, UINT wMsg,
LPARAM dwParam1, LPARAM dwParam2)
{
/* EPP TRACE("(%08lX, %04X, %08lX, %08lX, %08lX)\n", */
/* EPP dwDevID, hDriv, wMsg, dwParam1, dwParam2); */
switch(wMsg) {
case DRV_LOAD: return 1;
case DRV_FREE: return 1;
case DRV_OPEN: return JSTCK_drvOpen((LPSTR)dwParam1, dwParam2);
case DRV_CLOSE: return JSTCK_drvClose(dwDevID);
case DRV_ENABLE: return 1;
case DRV_DISABLE: return 1;
case DRV_QUERYCONFIGURE: return 1;
case DRV_CONFIGURE: MessageBoxA(0, "JoyStick MultiMedia Driver !", "JoyStick Driver", MB_OK); return 1;
case DRV_INSTALL: return DRVCNF_RESTART;
case DRV_REMOVE: return DRVCNF_RESTART;
case JDD_GETNUMDEVS: return 1;
case JDD_GETDEVCAPS: return JSTCK_GetDevCaps(dwDevID, (LPJOYCAPSW)dwParam1, dwParam2);
case JDD_GETPOS: return JSTCK_GetPos(dwDevID, (LPJOYINFO)dwParam1);
case JDD_SETCALIBRATION:
case JDD_CONFIGCHANGED: return JOYERR_NOCANDO;
case JDD_GETPOSEX: return JSTCK_GetPosEx(dwDevID, (LPJOYINFOEX)dwParam1);
default:
return DefDriverProc(dwDevID, hDriv, wMsg, dwParam1, dwParam2);
}
}
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