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Correctly enumerate evdev joysticks when enumeration is restricted 

with DIEDFL_FORCEFEEDBACK.
This commit is contained in:
Daniel Remenak 2005-07-29 14:41:55 +00:00 committed by Alexandre Julliard
parent b6c7677778
commit 3ddc4bb895
1 changed files with 35 additions and 7 deletions
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42
dlls/dinput/joystick_linuxinput.c
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@ -131,17 +131,24 @@ static void fake_current_js_state(JoystickImpl *ji);
#define test_bit(arr,bit) (((BYTE*)arr)[bit>>3]&(1<<(bit&7)))
static int joydev_have(void)
static int joydev_have(BOOL require_ff)
{
int i, fd;
int i, fd, flags, num_effects;
int havejoy = 0;
for (i=0;i<64;i++) {
char buf[200];
BYTE absbits[(ABS_MAX+7)/8],keybits[(KEY_MAX+7)/8];
BYTE evbits[(EV_MAX+7)/8],ffbits[(FF_MAX+7)/8];
sprintf(buf,EVDEVPREFIX"%d",i);
if (-1!=(fd=open(buf,O_RDONLY))) {
if (require_ff)
flags = O_RDWR;
else
flags = O_RDONLY;
if (-1!=(fd=open(buf,flags))) {
if (-1==ioctl(fd,EVIOCGBIT(EV_ABS,sizeof(absbits)),absbits)) {
perror("EVIOCGBIT EV_ABS");
close(fd);
@ -152,6 +159,23 @@ static int joydev_have(void)
close(fd);
continue;
}
/* test for force feedback if it's required */
if (require_ff) {
if ((-1==ioctl(fd,EVIOCGBIT(0,sizeof(evbits)),evbits))) {
perror("EVIOCGBIT 0");
close(fd);
continue;
}
if ( (!test_bit(evbits,EV_FF))
|| (-1==ioctl(fd,EVIOCGBIT(EV_FF,sizeof(ffbits)),ffbits))
|| (-1==ioctl(fd,EVIOCGEFFECTS,&num_effects))
|| (num_effects <= 0)) {
close(fd);
continue;
}
}
/* A true joystick has at least axis X and Y, and at least 1
* button. copied from linux/drivers/input/joydev.c */
if (test_bit(absbits,ABS_X) && test_bit(absbits,ABS_Y) &&
@ -183,10 +207,12 @@ static BOOL joydev_enum_deviceA(DWORD dwDevType, DWORD dwFlags, LPDIDEVICEINSTAN
(((dwDevType == DI8DEVCLASS_GAMECTRL) || (dwDevType == DI8DEVTYPE_JOYSTICK)) && (version >= 0x0800))))
return FALSE;
#ifndef HAVE_STRUCT_FF_EFFECT_DIRECTION
if (dwFlags & DIEDFL_FORCEFEEDBACK)
return FALSE;
#endif
havejoy = joydev_have();
havejoy = joydev_have(dwFlags & DIEDFL_FORCEFEEDBACK);
if (!havejoy)
return FALSE;
@ -221,10 +247,12 @@ static BOOL joydev_enum_deviceW(DWORD dwDevType, DWORD dwFlags, LPDIDEVICEINSTAN
(((dwDevType == DI8DEVCLASS_GAMECTRL) || (dwDevType == DI8DEVTYPE_JOYSTICK)) && (version >= 0x0800))))
return FALSE;
#ifndef HAVE_STRUCT_FF_EFFECT_DIRECTION
if (dwFlags & DIEDFL_FORCEFEEDBACK)
return FALSE;
#endif
havejoy = joydev_have();
havejoy = joydev_have(dwFlags & DIEDFL_FORCEFEEDBACK);
if (!havejoy)
return FALSE;
@ -276,7 +304,7 @@ static HRESULT joydev_create_deviceA(IDirectInputImpl *dinput, REFGUID rguid, RE
{
int havejoy = 0;
havejoy = joydev_have();
havejoy = joydev_have(FALSE);
if (!havejoy)
return DIERR_DEVICENOTREG;
@ -303,7 +331,7 @@ static HRESULT joydev_create_deviceW(IDirectInputImpl *dinput, REFGUID rguid, RE
{
int havejoy = 0;
havejoy = joydev_have();
havejoy = joydev_have(FALSE);
if (!havejoy)
return DIERR_DEVICENOTREG;