/*
* Opens the haptic device from the file descriptor.
*
* Steps:
* - Open temporary DirectInputDevice interface.
* - Create DirectInputDevice2 interface.
* - Release DirectInputDevice interface.
* - Call SDL_SYS_HapticOpenFromDevice2
*/
static int
SDL_SYS_HapticOpenFromInstance(SDL_Haptic * haptic, DIDEVICEINSTANCE instance)
{
HRESULT ret;
int ret2;
LPDIRECTINPUTDEVICE device;
/* Allocate the hwdata */
haptic->hwdata = (struct haptic_hwdata *)
SDL_malloc(sizeof(*haptic->hwdata));
if (haptic->hwdata == NULL) {
SDL_OutOfMemory();
goto creat_err;
}
SDL_memset(haptic->hwdata, 0, sizeof(*haptic->hwdata));
/* Open the device */
ret = IDirectInput_CreateDevice(dinput, &instance.guidInstance,
&device, NULL);
if (FAILED(ret)) {
DI_SetError("Creating DirectInput device", ret);
goto creat_err;
}
/* Now get the IDirectInputDevice2 interface, instead. */
ret = IDirectInputDevice_QueryInterface(device,
&IID_IDirectInputDevice2,
(LPVOID *) & haptic->hwdata->
device);
/* Done with the temporary one now. */
IDirectInputDevice_Release(device);
if (FAILED(ret)) {
DI_SetError("Querying DirectInput interface", ret);
goto creat_err;
}
ret2 = SDL_SYS_HapticOpenFromDevice2(haptic, haptic->hwdata->device);
if (ret2 < 0) {
goto query_err;
}
return 0;
query_err:
IDirectInputDevice2_Release(haptic->hwdata->device);
creat_err:
if (haptic->hwdata != NULL) {
SDL_free(haptic->hwdata);
haptic->hwdata = NULL;
}
return -1;
}
/*
* Opens a SDL_Haptic from a SDL_Joystick.
*/
int
SDL_SYS_HapticOpenFromJoystick(SDL_Haptic * haptic, SDL_Joystick * joystick)
{
int i, ret;
HRESULT idret;
DIDEVICEINSTANCE joy_instance;
joy_instance.dwSize = sizeof(DIDEVICEINSTANCE);
/* Since it comes from a joystick we have to try to match it with a haptic device on our haptic list. */
for (i=0; i<SDL_numhaptics; i++) {
idret = IDirectInputDevice2_GetDeviceInfo(joystick->hwdata->InputDevice,
&joy_instance);
if (FAILED(idret)) {
return -1;
}
if (DI_GUIDIsSame(&SDL_hapticlist[i].instance.guidInstance,
&joy_instance.guidInstance)) {
haptic->index = i;
break;
}
}
if (i >= SDL_numhaptics) {
return -1;
}
/* Allocate the hwdata */
haptic->hwdata = (struct haptic_hwdata *)
SDL_malloc(sizeof(*haptic->hwdata));
if (haptic->hwdata == NULL) {
SDL_OutOfMemory();
return -1;
}
SDL_memset(haptic->hwdata, 0, sizeof(*haptic->hwdata));
/* Now open the device. */
ret =
SDL_SYS_HapticOpenFromDevice2(haptic, joystick->hwdata->InputDevice);
if (ret < 0) {
return -1;
}
/* It's using the joystick device. */
haptic->hwdata->is_joystick = 1;
return 0;
}
