int open_joystick(char *joystick_device, GdkWindow *window)
{
HINSTANCE hi = 0;
HRESULT hr = 0;
HWND hwin = 0;
struct DEVINFO devinfo = {0};
/* create interface */
hi = GetModuleHandle(NULL);
hr = DirectInput8Create(hi, DIRECTINPUT_VERSION, &IID_IDirectInput8, (VOID**)&dinput, NULL);
if (FAILED(hr))
return -1;
/* look for a joystick */
hr = IDirectInput8_EnumDevices(dinput, DI8DEVCLASS_GAMECTRL, EnumDevCallback, &devinfo, DIEDFL_ATTACHEDONLY);
if(FAILED(hr))
return -1;
/* obtain joystick interface */
hr = IDirectInput8_CreateDevice(dinput, &devinfo.deviceID, &joystick, NULL);
if(FAILED(hr))
return -1;
/* set data format to "simple joystick" */
hr = IDirectInputDevice2_SetDataFormat(joystick, &c_dfDIJoystick2);
if(FAILED(hr))
return -1;
/* set the cooperative level */
#ifdef __WIN32__
hwin = GDK_WINDOW_HWND(window);
#endif
hr = IDirectInputDevice2_SetCooperativeLevel(joystick, hwin, DISCL_EXCLUSIVE | DISCL_FOREGROUND);
if(FAILED(hr))
return -1;
/* enumerate axes, buttons, povs */
hr = IDirectInputDevice2_EnumObjects(joystick, EnumObjectsCallback, NULL, DIDFT_ALL);
if(FAILED(hr))
return -1;
return 0;
}
/*
* Opens the haptic device from the file descriptor.
*
* Steps:
* - Set cooperative level.
* - Set data format.
* - Acquire exclusiveness.
* - Reset actuators.
* - Get supported featuers.
*/
static int
SDL_SYS_HapticOpenFromDevice2(SDL_Haptic * haptic,
LPDIRECTINPUTDEVICE2 device2)
{
HRESULT ret;
DIPROPDWORD dipdw;
/* We'll use the device2 from now on. */
haptic->hwdata->device = device2;
/* Grab it exclusively to use force feedback stuff. */
ret = IDirectInputDevice2_SetCooperativeLevel(haptic->hwdata->device,
SDL_HelperWindow,
DISCL_EXCLUSIVE |
DISCL_BACKGROUND);
if (FAILED(ret)) {
DI_SetError("Setting cooperative level to exclusive", ret);
goto acquire_err;
}
/* Set data format. */
ret = IDirectInputDevice2_SetDataFormat(haptic->hwdata->device,
&c_dfDIJoystick2);
if (FAILED(ret)) {
DI_SetError("Setting data format", ret);
goto acquire_err;
}
/* Get number of axes. */
ret = IDirectInputDevice2_EnumObjects(haptic->hwdata->device,
DI_DeviceObjectCallback,
haptic, DIDFT_AXIS);
if (FAILED(ret)) {
DI_SetError("Getting device axes", ret);
goto acquire_err;
}
/* Acquire the device. */
ret = IDirectInputDevice2_Acquire(haptic->hwdata->device);
if (FAILED(ret)) {
DI_SetError("Acquiring DirectInput device", ret);
goto acquire_err;
}
/* Reset all actuators - just in case. */
ret = IDirectInputDevice2_SendForceFeedbackCommand(haptic->hwdata->device,
DISFFC_RESET);
if (FAILED(ret)) {
DI_SetError("Resetting device", ret);
goto acquire_err;
}
/* Enabling actuators. */
ret = IDirectInputDevice2_SendForceFeedbackCommand(haptic->hwdata->device,
DISFFC_SETACTUATORSON);
if (FAILED(ret)) {
DI_SetError("Enabling actuators", ret);
goto acquire_err;
}
/* Get supported effects. */
ret = IDirectInputDevice2_EnumEffects(haptic->hwdata->device,
DI_EffectCallback, haptic,
DIEFT_ALL);
if (FAILED(ret)) {
DI_SetError("Enumerating supported effects", ret);
goto acquire_err;
}
if (haptic->supported == 0) { /* Error since device supports nothing. */
SDL_SetError("Haptic: Internal error on finding supported effects.");
goto acquire_err;
}
/* Check autogain and autocenter. */
dipdw.diph.dwSize = sizeof(DIPROPDWORD);
dipdw.diph.dwHeaderSize = sizeof(DIPROPHEADER);
dipdw.diph.dwObj = 0;
dipdw.diph.dwHow = DIPH_DEVICE;
dipdw.dwData = 10000;
ret = IDirectInputDevice2_SetProperty(haptic->hwdata->device,
DIPROP_FFGAIN, &dipdw.diph);
if (!FAILED(ret)) { /* Gain is supported. */
haptic->supported |= SDL_HAPTIC_GAIN;
}
dipdw.diph.dwObj = 0;
dipdw.diph.dwHow = DIPH_DEVICE;
dipdw.dwData = DIPROPAUTOCENTER_OFF;
ret = IDirectInputDevice2_SetProperty(haptic->hwdata->device,
DIPROP_AUTOCENTER, &dipdw.diph);
if (!FAILED(ret)) { /* Autocenter is supported. */
haptic->supported |= SDL_HAPTIC_AUTOCENTER;
}
/* Status is always supported. */
haptic->supported |= SDL_HAPTIC_STATUS | SDL_HAPTIC_PAUSE;
/* Check maximum effects. */
haptic->neffects = 128; /* This is not actually supported as thus under windows,
there is no way to tell the number of EFFECTS that a
device can hold, so we'll just use a "random" number
instead and put warnings in SDL_haptic.h */
haptic->nplaying = 128; /* Even more impossible to get this then neffects. */
/* Prepare effects memory. */
haptic->effects = (struct haptic_effect *)
SDL_malloc(sizeof(struct haptic_effect) * haptic->neffects);
if (haptic->effects == NULL) {
SDL_OutOfMemory();
goto acquire_err;
}
/* Clear the memory */
SDL_memset(haptic->effects, 0,
sizeof(struct haptic_effect) * haptic->neffects);
return 0;
/* Error handling */
acquire_err:
IDirectInputDevice2_Unacquire(haptic->hwdata->device);
return -1;
}
/* Function to open a joystick for use.
The joystick to open is specified by the index field of the joystick.
This should fill the nbuttons and naxes fields of the joystick structure.
It returns 0, or -1 if there is an error.
*/
int
SDL_SYS_JoystickOpen(SDL_Joystick * joystick)
{
HRESULT result;
LPDIRECTINPUTDEVICE device;
DIPROPDWORD dipdw;
SDL_memset(&dipdw, 0, sizeof(DIPROPDWORD));
dipdw.diph.dwSize = sizeof(DIPROPDWORD);
dipdw.diph.dwHeaderSize = sizeof(DIPROPHEADER);
/* allocate memory for system specific hardware data */
joystick->hwdata =
(struct joystick_hwdata *) SDL_malloc(sizeof(struct joystick_hwdata));
if (joystick->hwdata == NULL) {
SDL_OutOfMemory();
return (-1);
}
SDL_memset(joystick->hwdata, 0, sizeof(struct joystick_hwdata));
joystick->hwdata->buffered = 1;
joystick->hwdata->Capabilities.dwSize = sizeof(DIDEVCAPS);
result =
IDirectInput_CreateDevice(dinput,
&SYS_Joystick[joystick->index].
guidInstance, &device, NULL);
if (FAILED(result)) {
SetDIerror("IDirectInput::CreateDevice", result);
return (-1);
}
/* Now get the IDirectInputDevice2 interface, instead. */
result = IDirectInputDevice_QueryInterface(device,
&IID_IDirectInputDevice2,
(LPVOID *) & joystick->
hwdata->InputDevice);
/* We are done with this object. Use the stored one from now on. */
IDirectInputDevice_Release(device);
if (FAILED(result)) {
SetDIerror("IDirectInputDevice::QueryInterface", result);
return (-1);
}
/* Aquire shared access. Exclusive access is required for forces,
* though. */
result =
IDirectInputDevice2_SetCooperativeLevel(joystick->hwdata->
InputDevice, SDL_HelperWindow,
DISCL_EXCLUSIVE |
DISCL_BACKGROUND);
if (FAILED(result)) {
SetDIerror("IDirectInputDevice2::SetCooperativeLevel", result);
return (-1);
}
/* Use the extended data structure: DIJOYSTATE2. */
result =
IDirectInputDevice2_SetDataFormat(joystick->hwdata->InputDevice,
&c_dfDIJoystick2);
if (FAILED(result)) {
SetDIerror("IDirectInputDevice2::SetDataFormat", result);
return (-1);
}
/* Get device capabilities */
result =
IDirectInputDevice2_GetCapabilities(joystick->hwdata->InputDevice,
&joystick->hwdata->Capabilities);
if (FAILED(result)) {
SetDIerror("IDirectInputDevice2::GetCapabilities", result);
return (-1);
}
/* Force capable? */
if (joystick->hwdata->Capabilities.dwFlags & DIDC_FORCEFEEDBACK) {
result = IDirectInputDevice2_Acquire(joystick->hwdata->InputDevice);
if (FAILED(result)) {
SetDIerror("IDirectInputDevice2::Acquire", result);
return (-1);
}
/* reset all accuators. */
result =
IDirectInputDevice2_SendForceFeedbackCommand(joystick->hwdata->
InputDevice,
DISFFC_RESET);
/* Not necessarily supported, ignore if not supported.
if (FAILED(result)) {
SetDIerror("IDirectInputDevice2::SendForceFeedbackCommand",
result);
return (-1);
}
*/
result = IDirectInputDevice2_Unacquire(joystick->hwdata->InputDevice);
if (FAILED(result)) {
SetDIerror("IDirectInputDevice2::Unacquire", result);
return (-1);
}
/* Turn on auto-centering for a ForceFeedback device (until told
* otherwise). */
dipdw.diph.dwObj = 0;
dipdw.diph.dwHow = DIPH_DEVICE;
dipdw.dwData = DIPROPAUTOCENTER_ON;
result =
IDirectInputDevice2_SetProperty(joystick->hwdata->InputDevice,
DIPROP_AUTOCENTER, &dipdw.diph);
/* Not necessarily supported, ignore if not supported.
if (FAILED(result)) {
SetDIerror("IDirectInputDevice2::SetProperty", result);
return (-1);
}
*/
}
/* What buttons and axes does it have? */
IDirectInputDevice2_EnumObjects(joystick->hwdata->InputDevice,
EnumDevObjectsCallback, joystick,
DIDFT_BUTTON | DIDFT_AXIS | DIDFT_POV);
dipdw.diph.dwObj = 0;
dipdw.diph.dwHow = DIPH_DEVICE;
dipdw.dwData = INPUT_QSIZE;
/* Set the buffer size */
result =
IDirectInputDevice2_SetProperty(joystick->hwdata->InputDevice,
DIPROP_BUFFERSIZE, &dipdw.diph);
if (result == DI_POLLEDDEVICE) {
/* This device doesn't support buffering, so we're forced
* to use less reliable polling. */
joystick->hwdata->buffered = 0;
} else if (FAILED(result)) {
SetDIerror("IDirectInputDevice2::SetProperty", result);
return (-1);
}
return (0);
}
/* joystick_enum_callback:
* Helper function to find out how many joysticks we have and set them up.
*/
static BOOL CALLBACK joystick_enum_callback(LPCDIDEVICEINSTANCE lpddi, LPVOID pvRef)
{
LPDIRECTINPUTDEVICE _dinput_device1;
LPDIRECTINPUTDEVICE2 dinput_device = NULL;
HRESULT hr;
LPVOID temp;
HWND allegro_wnd = win_get_window();
DIPROPRANGE property_range =
{
/* the header */
{
sizeof(DIPROPRANGE), // diph.dwSize
sizeof(DIPROPHEADER), // diph.dwHeaderSize
0, // diph.dwObj
DIPH_DEVICE, // diph.dwHow
},
/* the data */
0, // lMin
256 // lMax
};
DIPROPDWORD property_deadzone =
{
/* the header */
{
sizeof(DIPROPDWORD), // diph.dwSize
sizeof(DIPROPHEADER), // diph.dwHeaderSize
0, // diph.dwObj
DIPH_DEVICE, // diph.dwHow
},
/* the data */
2000, // dwData
};
if (dinput_joy_num == MAX_JOYSTICKS-1) {
_TRACE(PREFIX_W "The system supports more than %d joysticks\n", MAX_JOYSTICKS);
return DIENUM_STOP;
}
/* create the DirectInput joystick device */
hr = IDirectInput_CreateDevice(joystick_dinput, &lpddi->guidInstance, &_dinput_device1, NULL);
if (FAILED(hr))
goto Error;
/* query the DirectInputDevice2 interface needed for the poll() method */
hr = IDirectInputDevice_QueryInterface(_dinput_device1, &IID_IDirectInputDevice2, &temp);
IDirectInputDevice_Release(_dinput_device1);
if (FAILED(hr))
goto Error;
dinput_device = temp;
/* set cooperative level */
hr = IDirectInputDevice2_SetCooperativeLevel(dinput_device, allegro_wnd, DISCL_FOREGROUND | DISCL_NONEXCLUSIVE);
if (FAILED(hr))
goto Error;
/* enumerate objects available on the device */
memset(&dinput_joystick[dinput_joy_num], 0, sizeof(struct DINPUT_JOYSTICK_INFO));
hr = IDirectInputDevice2_EnumObjects(dinput_device, object_enum_callback, &dinput_joystick[dinput_joy_num],
DIDFT_PSHBUTTON | DIDFT_AXIS | DIDFT_POV);
if (FAILED(hr))
goto Error;
/* set data format */
hr = IDirectInputDevice2_SetDataFormat(dinput_device, &c_dfDIJoystick);
if (FAILED(hr))
goto Error;
/* set the range of axes */
hr = IDirectInputDevice2_SetProperty(dinput_device, DIPROP_RANGE, &property_range.diph);
if (FAILED(hr))
goto Error;
/* set the dead zone of axes */
hr = IDirectInputDevice2_SetProperty(dinput_device, DIPROP_DEADZONE, &property_deadzone.diph);
if (FAILED(hr))
goto Error;
/* register this joystick */
dinput_joystick[dinput_joy_num].device = dinput_device;
if (win_add_joystick((WINDOWS_JOYSTICK_INFO *)&dinput_joystick[dinput_joy_num]) != 0)
return DIENUM_STOP;
dinput_joy_num++;
return DIENUM_CONTINUE;
Error:
if (dinput_device)
IDirectInputDevice2_Release(dinput_device);
return DIENUM_CONTINUE;
}
